News from Schwing Bioset

Noman M. Cole, Jr., Pollution Control Plant Updates Biosolids Piston Pumps

 

Written by Abis Zaidi

Version also published in TPO Magazine, March 2020

 

The Noman M. Cole Jr. Pollution Control Plant, located in Lorton, Virginia, installed four Schwing Bioset, Inc. sliding frame intermediate storage silos and KSP 45 piston pumps to store and pump their biosolids 15 years ago. The units have been in continuous service since that time, pumping the centrifuge dewatered biosolids into the incinerator.

The original equipment was sized for future growth that has not materialized, as such, the plant has struggled with turn-down while heating up their incinerator after a shutdown. The plant would overcome this issue by artificially starving the pumps, or by cycling them on an off intermittently during this condition.

The existing KSP 45 biosolids piston pumps can be replaced with smaller KSP 25 piston pumps that have the same footprint, operate from the same power unit, and offer the same operational features, including sludge flow measuring for USA EPA reporting, all while providing the operational turn-down necessary to solve incinerator re-start issues.

The Agency has new equipment and installation on order for the first half of 2020 and is expecting the same reliability and longevity as the existing equipment.

Schwing Bioset, Inc. is your complete solids handling provider, helping water and wastewater treatment plants by engineering and manufacturing material handling solutions. Schwing Bioset offers the widest range of high-performance dewatering screw presses, treatment for Class A Biosolids, nutrient recovery and struvite harvesting, MBR’s, sliding frame silos, fluid bed dryers, conveyors, and piston pumps, among other products. Pilot and mobile units are available, as well as aftermarket support, spare parts, and equipment maintenance services. 

Click here to learn more about our products then contact our regional manager closest to you.

 

Pictured below are photos of an original pump, followed by a replacement pump.

Schwing Bioset Piston Pump   IMG_0145

 

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Tags: Piston Pumps, Biosolids, Sliding Frame Silos

New Replacement Membrane Bioreactors Benefit Small Community

 

The Manor Water Reclamation Facility owned by Forsythe County located in Milton, GA, consisted of four trains utilizing Zeeweed 500D membrane bioreactors sized for a total of 500,000 gpd of flow. As the system aged, the County decided to replace the old membranes. Half of the existing membranes were replaced with Schwing Bioset’s Econity CF54D membrane bioreactors (MBRs) to process 250,000 gpd of flow. Due to the modular nature of Schwing Bioset’s Econity membranes, an easy, direct “in-kind” replacement of the old membranes was possible.

In the operator’s words regarding the retrofit, “the replacement was a breeze,” simply making pipe flange and hose connections. During replacement activities it was found that the existing membranes were fouled with debris, which revealed another advantage of the Schwing Bioset Econity membrane design.

Schwing Bioset’s Econity membranes are manufactured with an “end free” fiber (potted on bottom only) that eliminates fouling issues associated with membrane designs using top and bottom potting of the membrane fibers.

The Schwing Bioset Econity design is such that the fibers are contained in modular “cartridges” that are assembled into “cassettes” of more than one cartridge within a frame support. Unlike the existing MBR frames, the Schwing Bioset Econity frame is designed as a self-supporting structure. 

This modular design greatly simplifies installation and removal when necessary as the cassettes can be removed by a single operator in a couple hours, unlike the original equipment which required multiple staff members and a full day.

 

New MBR at Manor WRF   New Membrane Bioreactor at Manor Water Reclamation Facility

 

Based on the foregoing comparison, the following conclusions can be drawn about the Schwing Bioset Econity Membranes:

1. The modular design allows customization to fit virtually any basin shape or size.

2. The end free design solves the recurring problems of solids build up at the ends of the membrane fiber. The  membranes are not prone to fiber breakage and deterioration of effluent quality.

3. The construction is easier to maintain.

4. The end-free membrane design allows for more vigorous movement of the fibers requiring up to 40% lower air scour compared to the competitor.

5. The new MBR's have helped the community update its tertiary treatment system that treats sewage to re-use quality.

The advantages of Schwing Bioset Econity membranes are easily recognized by customers. It is for this reason that there well over 2000 installations world-wide.

 

Check out these photos of the old clogged membranes that were replaced!

Old MBR at Manor Water Reclamation Facility  Old Membrane Bioreactor at Manor WRF

 

To learn more about Schwing Bioset’s MBR systems, visit our website here or contact our Regional Manager closest to you.

 

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Tags: Wastewater Treatment, Membrane Bioreactor

Big Changes at Pine Creek Wastewater Treatment Facility

 

Written by Larry Trojak, Trojak Communications

Version also published in TPO Magazine, February 2020

 

Alabama facility sets lofty goals for its upgrade; meets or exceeds them all.

When the City of Prattville, Alabama, recently chose to upgrade its Pine Creek wastewater treatment facility, it spared no effort in doing so. While they had made smaller, incremental modifications in the past, this time around they took the plant from simply adequate to boldly forward-thinking, designing it to be viable and effective for at least the next quarter century. Included in the wholesale changes was a rethinking of its solids handling capability which, up to that point, was both basic and costly. Today, the Pine Creek Clean Water Facility uses a new approach to aeration, dewaters through a pair of new screw presses, is generating a Class A biosolids for area land application, and is now accepting sludge from a nearby sister facility. In this case, being up a creek is definitely a good thing.

 

Dealing with Growth

Located 20 minutes northwest of Montgomery, Prattville is a city of 34,000 which has seen some impressive development of late. According to the local Chamber of Commerce, between 2014 and 2018 alone, more than 130 new businesses have opened in Prattville and immediate surrounding areas — a total of $760 million in capital investment. All that growth prompted city officials to look at existing infrastructure demands and determine that upgrades to their wastewater treatment effort were in order.

“This was a wholesale overhaul of the entire treatment process to help deal with the growth in the area,” said Greg
Thompson, project engineer with Engineers of the South. “We are a consulting engineering company and have been working with the City for more than 15 years now. So, we were actively involved in the research and planning leading to the upgrade. The original plant, built in 1979 as part of the Clean Water Act, had a 3 mgd capacity. In addition to options for dealing with the anticipated increases in volume, we talked with city officials about re-thinking the entire biosolids treatment and disposal process.”

 

Alabama Dream Sheet

Though a plant-wide change was in the cards, the evaluation criteria for that change were very ordered and specific. According to Dale Gandy, Prattville’s Director of Public Works, the desire to use state of the art technology headed up the list of desirables. 

“Obviously, we wanted to tap into the strengths of today’s newer technology,” he said. “However, we also wanted to try to utilize ‘green’ infrastructure within the plant; had our sights set on looking into a Class A biosolid; wanted to create an effluent that was cleaner than the environment into which it was headed; wanted the whole effort to be energy efficient; and needed the plant to gain an additional 25-30 years of viability. In addition, because we didn’t have unlimited funds to throw at the project, we had to be relatively cost conscious in our efforts. It was a long list to try to meet but we set out confident that it could get done.”

The new plant design that Thompson and his engineering team — working hand in hand with Gandy and Prattville’s
plant management — envisioned, would take the facility from 3.0 to 5.7 mgd — almost doubling in volume. That
increase in capacity, they felt, would give them the 25-30 year life expectancy they needed.

 

Schwing Bioset Screw Presses  Schwing Bioset - Bioset Process Reactor

 

Outdated Concepts

To get to that point, there was not one area of the Pine Creek facility that would be left untouched by the overhaul. Designed in the late 1970s as a conventional activated sludge facility, the plant utilized a coarse screen in a deep sump, prior to the raw sewage pump station, followed by aerated grit removal.

“Aeration in the original design consisted of three parallel basins with two fixed-mounted, low speed surface aerators per basin,” said Thompson. “Control of the aeration system consisted only of locally-mounted low/high-speed selector switches. Not only was the process energy-inefficient, the inability to aerate sufficiently or deal with varying flow rates and oxygen demands led to plant upsets and periodic effluent violations. The warm summer months, when effluent limits are lowest, made it particularly hard for operators to maintain compliance.”

At that time, once biosolids met Class B requirements, they were hauled off to a local field — with 100% of the liquid
— for land application. The facility averaged 10-15 tanker loads of the wet material per day. “But if it had rained and the field was wet, they couldn’t land-apply, so the plant had to be prepared to store material in the digesters,” added Thompson. “It’s not surprising they knew a change was needed.” Finally, the previous clarifiers utilized a mix of organ pipe and scraper blade solids-removal systems. Disinfection, which originally used gaseous chlorine, was updated to UV in a 1999 plant modification.

 

In With the New

Thompson and his group worked hard, not only to address all the issues with the existing design, but also to ensure
the plant’s viability for decades to come. In aeration, to deal with the high ammonia numbers caused by an inability to nitrify, they opted for a VertiCel solution (Evoqua Water Technologies, Pittsburgh, Pa.).

“VertiCel uses a combination of disk aeration followed by fine bubble diffused air,” said Thompson. “In that way, we
felt we could tap the efficiencies of both types of aeration to meet our need for an energy-efficient design and to get full biological nutrient removal.”

Conversely, changes to the plant’s digestion phase included taking them from using surface mechanical aeration to
diffused aeration. “Prattville always had issues getting enough oxygen transfer with the old system,” said Thompson. “This combination of disc aerators and fine bubble diffusers powered by Howden blowers (PD Blowers, Inc, Gainesville, Ga.) is both energy efficient and has great oxygen transfer.” Also covered in the expansion’s design were an all-new headworks, two new fine screens (Duperon, Saginaw, Mich.), and grit removal which incorporated Eutek HeadCell technology and WEMCO Hydrogritters.

 

Road Trip

With preliminary design considerations in place, representatives from both the City and Engineers of the
South, visited a number of wastewater treatment plants throughout the southeast U.S. to review various approaches
to dealing with biosolids. One of the things driving the city’s decision to create a Class A biosolid product was, again, growth in the area.

“We were seeing new industries coming in regularly and knew that we could soon be running out of industrial fields
like the one on which we’d been applying,” said Sam Russell, Pine Creek’s former plant manager who was brought on as a consultant during the upgrade. “So, we knew solids handling had to change and that dewatering would be a huge part of that discussion."

Evaluations of available dewatering options included visits to a half dozen facilities to view belt presses, screw presses and centrifuges, and conversations with operators about their experiences with each. With that growing volume of information at hand, the group started seeing the screw press as the best fit for Prattville, and a visit to a plant in Immokalee, Fla. confirmed that for them.

“Immokalee was an eye-opener for us,” said Thompson. “That installation utilizes a Schwing Bioset screw press
(Schwing Bioset, Somerset, Wisc.) for dewatering and creates a Class A product using the Bioset solution. We saw
so many similarities between what Immokalee had dealt with and our own situation at Prattville that we all felt we’d found our answer. ”

 

Pressing Issue

Coming online in August 2019, the biosolids treatment at Pine Creek now begins by taking material from WAS storage basins — where sludge is held, mixed and aerated — and fed to a pair of new Model FSP-1002 screw presses for dewatering. Each of Pine Creek’s screw presses is rated for 1,122 lbs. of dry solids per hour, with a minimum cake dryness of 17% and a 95% minimum system solids capture. With “tweaks” still being made to the process as operations stabilize, the facility is currently getting cake discharged up to 18%. While the performance stats proved key in making their decision, Prattville was also drawn by the self-cleaning function the Schwing Bioset screw press offered, where the units continue to dewater whenever a cleaning cycle is performed. This continuous operation ensures no equalization storage is necessary between dewatering and the Class A operations.

“We have each unit scheduled to clean itself every hour, but that function is flexible and easily changed,” said Napoleon Wilks, Pine Creek’s current plant manager. “We also like the fact that these presses are almost self-operating,” he said. “We have them programmed to run for only seven hours a day, five days a week, which allows us to keep staffing costs down.”

 

A Stabilizing Presence

In addition to being a sound decision for the City, the fact that both Sam Russell and Dale Gandy own and operate
farms helped solidify Prattville’s decision to go with a Class A product. Their understanding of the benefits a soil
amendment product can bring, the ways it can be used and how positive it could be to the community, led to that
decision.

“We like what can be done with a good Class A product — whether it’s a resident needing it for flower beds, for grass in front of City Hall, or a farmer using it on crops. And, after seeing the success Immokalee was having, it made sense to go with the Bioset solution,” said Russell. “We also felt that there was a real up-side in accountability
to sourcing both the dewatering and the Class A process from the same company.”

The Bioset process uses a screw conveyor to take Pine Creek’s untreated biosolids from the screw presses to
a twin-screw mixer where quicklime and sulfamic acid are added and mixed. From the mixer, a Schwing Bioset
KSP-25VKL pumps material through a 22 ft. long reactor. There, the chemical reactions raise the temperature and
the pH level, stabilizing the mixture and creating a product that meets EPA Class A requirements.

According to Wilks, they are maintaining a minimum temperature of 131°F (55°C) in the reactor with a retention time of 40 minutes in accordance with the operating conditions approved by the Unites States Environmental Protection  Agency (USEPA) through the Process to Further Reduce Pathogens (PFRP) in the 503 regulations. “The way we process our biosolids today — pushing a lower quantity through there than our future design conditions — material is actually in the reactor far longer than that,” he said. “The results have been a consistently good Class A biosolid that we take to a field owned by the department, dump it, spread it a bit, and turn it for a few days until it dries to a point that we are able to pass it along to a local farmer — and right now he will take all that we can provide.”

 

Schwing Bioset Municipal Piston Pump  Schwing Bioset Truck Loading

 

No Mistake About It

In the past, a continual stream of trucks, each carrying roughly 6,800 gallons of liquid headed to the field to
land-apply as much as 81,600 gallons of liquid waste per day. Today’s disposal effort involves just two tri-axle
trucks loaded ¾ full per week. And that energy efficiency criteria? It’s been met to a degree they never imagined,
according to Gandy.

“This is amazing to even comprehend but, despite almost doubling the size of the plant in terms of capacity, when we ran the numbers we found that our energy consumption had only increased by 8%,” he said. “Thinking I must have missed something I checked the data several times and even had a representative from Alabama Power verify
it for me. There was no mistake — that’s how energy efficient this plant is.”

The new biosolids effort is working so well that Pine Creek CWF has already begun processing material from
its sister plant, the 4 mgd Autauga Creek CWF. To do that, the City hauls approximately 200,000 gallons of wet
sludge (at 1.75% concentration ) per month from Autauga Creek to Pine Creek for processing.

Said Gandy: “We set out with a pretty challenging to-do list. But tapping the innovative technology available to us,
we feel we accomplished it all — and then some.”

Click here to read more about our Products, then contact us to learn more about this project or find out how we can help your plant too.

 

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Tags: Class 'A' Biosolids, Bioset Process, Wastewater Treatment, Municipal Pumps, Screw Press

Capital Idea for Biosolids Processing at Springfield Wastewater Treatment Plant

 

Written by Larry Trojak, Trojak Communications

Version also published in WE&T Magazine, December 2019

 

Springfield, Ill., wastewater treatment plant supplements its sludge disposal effort with a pair of screw presses and alkaline stabilization.

Effective wastewater treatment is predicated on equal parts science and planning. The science element of that premise includes keeping abreast of the latest technology to best manage both the treatment and disposal of biosolids. For the Sangamon County (Illinois) Water Reclamation District, that has meant rethinking its approach to biosolids, particularly in the area of dewatering prior to land application. Once solely dependent upon liquid applying its Class B byproduct, the District’s Sugar Creek Wastewater Treatment Facility recently upgraded its process to include a pair of fully-automated screw presses and a Class B alkaline stabilization system from Schwing Bioset, Inc. (Somerset, Wis.). Today, with a viable option to that liquid process in place, the plant is generating more than 17,000 lbs. of Class B cake monthly, and has peace of mind that its biosolids effort is poised for future growth.

 

Schwing Bioset Screw Presses   Schwing Bioset Screw Presses

 

A Pair of Plants

In addition to being the state capital, the city of Springfield (and immediate surrounding areas) hosts scores of facilities related to a booming agribusiness industry. These include one of the nation's largest stockyards and feeder cattle facilities, as well as various creameries, meatpacking plants, flour mills, etc. To meet the demands these and other industries place on the area’s wastewater system, a pair of treatment plants were built: Spring Creek in 1928 and, to accommodate area growth, a sister plant, Sugar Creek, in 1972.

“Since that time, both plants have been retrofitted to better handle increased volumes,” said Steve Sanderfield, Sugar Creek’s plant supervisor. “Spring Creek is by far the larger of the two with an average flow of 32 mgd and a peak of 80 mgd. Here, we average 15 mgd and top out at 37.5 mgd, so our max is really only 5 million gallons more than their average. Spring Creek has been updated every couple of decades, but this plant had remained fairly constant until a 2017 upgrade which resulted in a 50% increase in both the average and peak flows. That upgrade also paved the way for the current change to the dewatering effort.”

The most recent changes were improvements for flow control and diversion to wet weather treatment facilities that included mechanically cleaned perforated plate fine screens, grit removal tanks, and activated sludge tanks designed to meet both current and future effluent phosphorus limits.

 

A Better Alternative

In addition to the changes mentioned above, the biosolids area also underwent a significant upgrade, including those areas for thickening, stabilization, dewatering, and storage. Until those changes were made, Sanderfield said they had only one option for disposing of the sludge created in their treatment process.

“Since the mid 1990s, to meet 40CFR Part 503 requirements for Class B Biosolids, we post-stabilized liquid sludge (1.5% TS) by adding standard hydrated lime in a slurry,” he said. “Batches of the biosolids/lime mix were held in batch mixing tanks for 24 hours, after which (if they met 503 pH requirements) they were land-applied on a 30-acre farm owned by the District. If the batch pH dropped overnight below the acceptable standard, it would have to be “re-limed” and given another 24 hours to achieve the requirements within the standards. The stabilized liquid sludge was then pumped and spray-applied through a series of fixed irrigation nozzles installed throughout the farm. Because it is a liquid-sprayed application, large sludge storage tanks are required for times when field limitations (wet seasons, frozen ground, etc.) prevent application.”

While it was less expensive to apply the stabilized sludge in liquid form, those shortcomings prompted a re-thinking. Taking a page from their sister plant’s playbook, they began looking into options for dewatering prior to land application.

“Spring Creek was already dewatering with screw presses and sending the dewatered product to a pad for drying and eventual land application,” said Sanderfield.” However, because our process differs from theirs — aerobic versus anaerobic — and we saw some shortcomings in the presses they use, we decided to look at what else was out there. Vendors were invited to show us their products and, after an impressive two-week pilot test and subsequent bid process, we chose a pair of FSP 1102 screw presses from Schwing Bioset.”

 

Schwing Bioset Municipal Pump   Schwing Bioset Storage Silo

 

Two Are Better Than One

The model of presses in place at Sugar Creek represent one of the largest designs Schwing Bioset offers. Low speed by design, they offer dewatering results comparable to high speed centrifuges and — by nature of that slow speed and robust construction — provide a much longer lifetime of service. Sanderfield was particularly interested in one feature of the screw press: a split-screen cage that both simplifies screw removal and minimizes footprint requirements. The split cage allows the sealing lip and screen to be replaced with the screw in place — much simpler than removing the screw from one end of the machine.

“Once we knew the press would give us the product we needed, we tended to focus on the upkeep side of things,”
he said. “For example: how easy would the units be to repair if one of them went down? How self-cleaning is it? What kind of wear items does it contain? That last point was important to us. The presses at Spring Creek utilize brushes that wear down and, once they do, we have to pull the entire screw out to change them. That’s a huge undertaking we wanted to avoid over here.”

Immediately after the pilot test, Sanderfield was impressed with the self-cleaning process for the Schwing Bioset
presses. Unlike the units at Spring Creek which simply spray as the disc rotates and must be done when the unit is
not de-watering, these utilize a low-volume, high-pressure spray ring that tracks down the length of the screw — during operation.

“This approach is so much better than others we’ve seen,” he said. “Our dewatering operation does not need to be
interrupted for cleaning, and the cleaning cycle is typically only three to five minutes long, once per day. We’ve also
found that after a thorough cleaning the presses can sit for a while and, when they are needed, will be in operation
immediately — nothing hardens up in the lines. Because we don’t run the presses continuously here at Sugar Creek, that was important to us.”

 

Strength in Numbers

Although Sugar Creek never intended to run both presses at once, they nevertheless opted to go with two units rather than just one, based on equal parts the desire for redundancy and an eye toward future growth.

“For us, the purchase of the second press was definitely driven by the need for a backup,” said Sanderfield. “We
are in a situation here where a press failure or, more likely, one of the pumps we have feeding each press, would be
catastrophic to the process. That’s no longer a concern for us. In addition, as this area continues to grow, we are better poised to meet that growth without the need for any major overhaul.”

At Sugar Creek, sludge enters the press at roughly 1.3% solids, mixes with a polymer, and exits at 25 to 30%
dry solids. While they are extremely pleased with those numbers, Sanderfield is quick to point out that, as with any
press system, they have to take additional steps to deal with the filtrate. “The filtrate tends to be high in ammonia
and phosphorus, so it’s considered a side stream,” he said. “When we bring that back to the plant we have to be certain to do so slowly. So when the presses run, the filtrate that is getting squeezed out is pumped back at a slow rate and is controlled by the tank level. So, if we program it to start pumping when it’s at five feet and stop when it is at three feet, that’s what it will do.”

 

Push of a Button

Sanderfield’s allusion to equipment autonomy is telling. Automation of the presses was also a huge consideration
for Sugar Creek when making their purchase decision, and Sanderfield said they are very pleased with the level
of self-operation the 1102’s can maintain. 

“We start and stop it, monitor it, and run tests on the solids as it comes out,” he said. “But, for the most part, we are
able to hit ‘start’ and the sludge pump will control the feed rate that we set, the presses will do their thing, the
polymer will activate — it essentially runs itself and fits perfectly with the rest of the process which is also heavily
self-operating.”

From the screw press the biosolids still needed to be treated per the EPA 503 to Class B levels. The project
had already started down the path to utilize another technology, but after piloting the Schwing Bioset alkaline
stabilization technology with the screw press, the project switched gears. The biosolids are now routed from the
screw presses to the Class B lime system (also supplied by Schwing Bioset) where quicklime is introduced to
stabilize the dewatered biosolids by elevating the pH. 

“As with the liquid application, according to EPA 503 we cannot field apply the material until we’ve met the 24-hour
pH criteria,” said Sanderfield. “Doing so eliminates the risk of rodents, birds, animals, etc., coming in contact with
the sludge and possibly transferring diseases to other animals or people. Once we’ve stabilized it in the lime
system that’s no longer an issue.”

And, with an eye toward the future, Sugar Creek’s Class B lime system is also designed to facilitate expansion into a Class A Bioset alkaline stabilization process, should they choose. After treatment in the lime system, sludge — now with the consistency of a slightly wet modeling clay — is conveyed to a drying pad where it gets regularly turned using a skid-steer loader with a Brown Bear windrow turning attachment; once fully dried, it is ready for land
application.

 

Just Gets Better

If things seem to be going great for the team at Sugar Creek, it’s because they are. They just wrapped up a
well-attended open house for area residents and local officials, they are meeting all the necessary biological and
phosphorus thresholds without the use of chemicals, and they were just recently nominated for Plant of the Year in
Illinois.

“That last fact — a nomination for Plant of the Year — is mind-blowing, given that we’ve only been online for over a
year,” said Sanderfield. “Things were crazy here for quite a while, but we are now settling in to a nice routine and the Schwing Bioset presses and alkaline system have helped provide a lot of that peace of mind. We will still do both solid and liquid land applications of the sludge — that’s always been the plan. But, since we can press in five days what would probably take us three weeks to do otherwise, the process is far more efficient than it’s ever been.”

 

Click here to read more about our Products, then contact us to learn more about this project or find out how we can help your plant too.

 

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Tags: Alkaline Stabilization, Wastewater Treatment Plant, screw presses

Schwing Bioset Exhibiting at Water & Wastewater, Mining, and Industrial Trade Shows in 2020

 

Schwing Bioset, Inc. is excited to be attending and exhibiting at several conventions and expos throughout 2020. If you'd like to meet with one of our team members at a show, please email us and we'll put you in touch with the appropriate person.

Below is a list of water, wastewater, mining, and industrial events that we are scheduled to attend for the coming year, and we will keep this information updated as we add shows throughout the year. 

Products that you can learn about at the trade shows include, among others, sludge, industrial, and tunnel piston pumps, dewatering screw presses, membrane bioreactors, Bioset process equipment for Class A biosolids, phosphorus removal and struvite recovery, sliding frame and push floor silos, fluid bed drying products, container wagons, and soil conditioners. We can also help you with equipment demos, mobile equipment, spare parts, equipment maintenance services, and customer pump and screw press training. 

For more than 30 years, Schwing Bioset, Inc. has been helping water and wastewater treatment plants, mines, and industrial customers by engineering solids handling solutions. Schwing Bioset’s custom-engineered solutions can be found in hundreds of wastewater treatments plants in North America, as well as mines and tunnels around the world.

Read about our company, our products, our aftermarket team, and more, and then stop by one of our booths to learn more! 

Trade Show Date Place
Arizona Water Biosolids Workshop 2020 Feb. 4 Pima County Water Campus, Tucson, AZ
Michigan Joint Expo 2020 Feb. 4-5 Lansing Center, Lansing, MI
Pacific Water Conference 2020 Feb. 4-6 Hawaii Convention Center, Honolulu, HI
SME MineXchange 2020 Feb. 23-26 Phoenix Convention Center, Phoenix, AZ
MRWA Technical Conference 2020 March 3-5 River's Edge Convention Center, St. Cloud, MN
Salon TEQ 2020 March 10-11 Quebec City Convention Center, Quebec City, QC
Membrane Technology Conference & Expo 2020 March 16-20 Phoenix Convention Center, Phoenix, AZ
WaterCon Illinois 2020 March 23-26 Crowne Plaza Hotel, Springfield, IL
Missouri Joint Conference 2020 March 28 - April 1 Tan-Tar-A Resort, Lake of the Ozarks, MO
WEF Residuals & Biosolids 2020 March 31 - April 3 Minneapolis Convention Center, Minneapolis, MN
Texas Water 2020 March 31 - April 3 Fort Worth Convention Center, Fort Worth, TX
CWEA (NWEA) Annual Conference 2020 March 31 - April 3 Reno-Sparks Convention Center, Reno, NV
Alabama/Mississippi Water Joint Annual Conf. 2020 April 5-8 Arthur Outlaw Convention Center, Mobile, AL
Arizona Water Annual Conference 2020 April 14-16 Phoenix Convention Center, Phoenix, AZ
Expomin 2020 April 20-24 Centro de Convenciones Espacio Riesco, Santiago, Chile
SME Colorado MPD Conference April 23-25 The Broadmoor, Colorado Springs, CO
FWRC 2020 April 26-29 Palm Beach Cty Convention Center, West Palm Beach, FL
Powder Bulk Solids (PBS) 2020 April 28-30 Donald E Stephens Convention Center, Rosemont, IL
Paste 2020 June 9-12 Sheraton Santiago Convention Center, Santiago, Chile
KY/TN Water Professionals Conference 2020 July 19-22 Chattanooga Convention Center, Chattanooga, TN
Tri-State Seminar 2020 August 10-13 South Point Hotel & Casino, Las Vegas, NV
PNCWA 2020 Sept. 13-16 Spokane Convention Center, Spokane, WA
WaterJam Virginia 2020 Sept. 14-17 Hampton Roads Convention Center, Hampton, VA
MinExpo 2020 Sept. 28-30 Las Vegas Convention Center, Las Vegas, NV
WEFTEC 2020 October 5-7 New Orleans Morial Convention Center, New Orleans, LA

 

Schwing Bioset Trade Shows   Schwing Bioset Trade Shows

 

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Tags: Announcements, Events, WEFTEC, Expos

Schwing Bioset Trailer Mounted FSP 1103 Screw Presses Now Available for Contract Operations

 

Written by Kelly Kramer

 

Schwing Bioset is pleased to announce that we can now help solve your dewatering challenges with our fully automated trailer mounted FSP 1103 screw press dewatering systems. Available for onsite demonstrations and/or contract operations, the 1103 screw press is one of our largest models and is engineered for durability, reliability, ease of operation, and low power consumption, making the units an efficient method to dewater.

As with all of our screw presses, our mobile units are designed for quick set up, ease of use, and high-performance for dewatering all types of wastewater. 

One of the screw press features our customers are most excited about is the self-cleaning wash cycles. With low wash water requirements and automation, dewatering operations do not need to be suspended during cleaning and a cleaning cycle typically lasts less than five minutes.

Once dewatered, the solids can be treated, loaded, hauled away, and/or beneficially reused, depending upon the method of the end user.

For more information on our mobile screw press units, please contact our Regional Manager nearest to your plant. The screw press and Schwing Bioset’s full product offering can be viewed here.

 

Schwing Bioset Mobile Screw Press   Schwing Bioset Mobile Screw Press

 

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Tags: Wastewater Treatment, Screw Press, Dewatering, Mobile Screw Press

Screw Press Proves Efficient in Dewatering MBR Sludge

 

Written by Tom Welch

Version also Published in TPO Magazine, August 2019

 

The Decatur, AR, WWTP had existing dewatering technology that proved to be undersized and inefficient. With the additional demands of a new plant upgrade, Operations staff were struggling to meet current dewatering requirements.

The Design Build team and Owner selected an FSP 802 screw press from Schwing Bioset to replace the existing equipment. The new equipment was installed in the same building with primarily service connection modifications. The screw press started operating in November of 2018.

The improvements in the dewatering operations are remarkable, as it is saving Decatur operational expenses in every category. Dry solids content of the dewatered biosolids have improved from an average of 13% to 17%, resulting in less cake to haul. Solids capture rate has improved from less than 80% to 95%, resulting in a lower return load to the plant. Polymer usage is now at 18 pounds active per dry ton, which is well below the consumption rate of the previous technology reducing polymer expenditures.

In addition to these performance improvements, the dewatering capacity has more than doubled. Where it used to take at least two days to load a 25-ton trailer, the plant can now fill a trailer in 6.5 hours, reducing operator efforts in turn. 

With the widest range of machine sizes for several applications, and mobile pilot units available for testing your materials, Schwing Bioset is your comprehensive solutions provider for dewatering.

Click here to learn more about our products or contact our regional manager closest to you.

 

Decatur Dewatering Screw Press

 

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Tags: Biosolids, Screw Press, Dewatering, Membrane Bioreactor

West Rankin Utility Authority to Install Three Schwing Bioset Screw Presses

 

Written by Kelly Kramer, October 2019

 

The West Rankin Utility Authority (WRUA) provides services to several communities in Western Rankin County in Mississippi. WRUA generates approximately 10 to 12 million gallons of wastewater each day, which is currently transmitted to the Savanna Street Wastewater Treatment Plant in Jackson. To take advantage of this service, the authority has to pay Jackson, which costs it a few million dollars each year.

In an effort to save costs in the long run, and operate independently, WRUA has decided to build a brand-new wastewater treatment plant of its own. Schwing Bioset is pleased to announce that our team will be part of this project, with WRUA ordering three of our largest dewatering screw presses, the model FSP1203’s.

The FSP 1203’s are designed to handle a capacity of up to 7,468 dry pounds per hour. For West Rankin, the expectation is to process 24 dry tons per day operating at 60 hours per week, dewatering of 0.75% solids WAS with a 17% solids sludge cake output, and a ≥ 90% solids capture rate.

Schwing Bioset Screw Press     Schwing Bioset Screw Press

The West Rankin screw press system is designed for continuous dewatering of flocculated slurry and consists of a screw press dewatering unit, a flocculation tank, a rotary lobe sludge feed pump, and a liquid polymer blending system. Slow movement and the high-quality design of the structural components guarantee a high service life, and the back-washing cycle cleans the screens automatically so dewatering operations will not be interrupted during washing cycle.

With the new equipment in the new wastewater treatment plant, Schwing Bioset will be able to help West Rankin to bring its system into compliance with federal water quality laws, increase plant capacity, and save on costs in the long run.

To learn more about Schwing Bioset’s dewatering screw presses, contact Chuck at cwanstrom@schwingbioset.com or visit our website.

 

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Tags: Screw Press, Dewatering, Wastewater Treatment Plant

Membrane Bioreactors Increase Effluent Quality at Hotel and Casino

 

Written by Surya Pidaparti

 

The Santa Ynez Band of Chumash Indians operates a hotel and casino in Chumash, California. The sewage from the facilities used to be treated by a conventional sequencing batch reactor (SBR) and sand filtration. As the hotel and its vicinity expanded, the existing SBR was not able to treat the increased flow, which was the major driving force for upgrading the facility. As the area is a high drought zone, a requirement of any permit for expanding the hotel would require water reuse.

Two options were selected to evaluate for the wastewater treatment expansion project – an expansion of the existing SBR alongside the existing and abandoning the SBR in favor of a Membrane Bioreactor (MBR) system. An extensive engineering evaluation showed that the MBR system had a total construction cost of $3.3 million versus a cost of $5.3 million for the SBR.

Econity MBR’s were selected, as offered by Schwing Bioset, for not only their performance, but their flexibility in design. With a cartridge and cassette configuration, maintaining the membranes becomes a simple exercise. The MBR system was built using two containers to minimize disruptions to current plant operations and to fit in the limited site space available. The facility was commissioned in January of 2016.

With the improvements, there has been a significant increase in the facility’s capacity all while showing that that the effluent quality, measured in turbidity (0.05 – 0.2 NTU) vastly exceeds California Title 22 requirements for reuse water (< 1NTU).

To learn more about Schwing Bioset’s MBR systems, contact Surya at spidaparti@schwingbioset.com or visit our website here.

 

Schwing Bioset Membrane Bioreactors  Schwing Bioset Membrane Bioreactors

 

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Tags: Wastewater Treatment, Membrane Bioreactor

Schwing Bioset Custom Solutions Featured at WEFTEC 2019 Exhibit

 

Written by Kelly Kramer, August 2019

 

Schwing Bioset, Inc. (SBI) is once again exhibiting at the 2019 WEFTEC Technical Expo in Chicago on September 23-25. Please be sure to stop by our booth (#2307) while you're on the exhibit floor to see our equipment in person, check out product videos, and learn about how we help water and wastewater treatment plants. This year we will be showcasing several pieces of equipment.

Schwing Bioset is your complete solids handling provider, offering the widest range of high-performance screw presses, one of which will be displayed on the WEFTEC floor. Our screw press offers dewatering for those needing a cost effective, durable, efficient dewatering to reduce their volume of biosolids.

We will also be displaying our Membrane Bioreactor (MBR) filtration systems that utilize hollow fiber membranes and help eliminate fouling. The units are customizable for new applications or drop in replacements are available for existing membranes.

Nutrient Recovery is becoming increasingly important and our phosphate management technology, offered under license from NuReSys, that recovers orthophosphate in the form of struvite, will also be on display.

Other equipment on display will be a sliding frame, biosolids piston pump, and a Bioset reactor. The Bioset system is configurable to produce either Class A or B Biosolids, while each unit in the system is completely customizable to fit each plant.

Featured in the Technology Center will be our Fluid Bed Dryers, Container Wagons, SBI Solutions, and our material hauling services. Struvite and fertilizer material samples will also be displayed.

“As always, we are looking forward to WEFTEC 2019.  This is the perfect place to showcase the quality of our equipment and its unique and specific features that separate us from other options in the market,” said Chuck Wanstrom, Director of New Business Development.

The SBI team members attending the show include Executives, Regional Sales Managers, Service and Aftermarket Department personnel, and more. We’ll also be joined by members of our partner companies, including Revinu, NuReSys, Econity, and The Andersons, Inc. If you would like to meet with any of these team members, please email us and we'll put you in touch with the appropriate person to assist with your needs.

Be sure to follow the Schwing Bioset, Inc. social media sites to see what we’re up to at the show. In the meantime, read about our MBR’s, Nutrient Management, Dewatering Equipment, Piston Pumps, Bioset Process, and other products hereand then stop by booth 2307 to learn more! You can also visit the conference website to view the event details, an expo map, a list of exhibitors, and more: http://www.weftec.org.

We are excited to see you at WEFTEC 2019!

Schwing Bioset WEFTEC 2019   Schwing Bioset WEFTEC 2019

About Schwing Bioset, Inc.

For more than 30 years, Schwing Bioset, Inc. has been helping wastewater treatment plants, mines, and industrial users by engineering solids handling solutions. Schwing Bioset’s custom-engineered solutions can be found in over a thousand facilities across North America and around the world.

Our products include, among others, sludge, industrial, and tunnel piston pumps, screw presses, nutrient removal and management, membrane bioreactors, sliding frame and push floor silos, fluid bed drying products, Bioset process for Class A Biosolids, container wagons, and screw conveyors. We also offer on-site demos, spare parts and equipment maintenance services, and training. 

 

 

Tags: Announcements, Events, WEFTEC, Expos