News from Schwing Bioset

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

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

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 is Exhibiting at WEFTEC 2017

 

Schwing Bioset, Inc. (SBI) is looking forward to exhibiting at the 2017 WEFTEC Event in Chicago on October 2-4. 

Please be sure to stop by our booth (#2007) while you're on the exhibit floor. We will be displaying a dewatering screw press, as well as two new pieces of equipment.

Our new Membrane Bioreactor (MBR) filtration systems for water and wastewater utilize hollow fiber membranes. The unique end-free cartridge design provides an economical alternative to traditional longer fibers.

We are also debuting our new SBI Solutions system. This pre-packaged system is configurable to produce either Class A or B Biosolids in a convenient, pre-engineered skid mounted unit. The system is a compact, modular unit including a piston pump combined with the Bioset process, and optional screw press dewatering capabilities for an all-in-one package.    

MBR.png  SBI Solutions.png

 

 

 

 

 

 

 

The SBI team members attending the show include Executives, Regional Sales Managers, Aftermarket Support personnel, and more. If you'd like to meet with one of our team members, please email us and we'll put you in touch with the appropriate person.

Read about our Nutrient Removal and Struvite Harvesting, Dewatering Equipment, Piston Pumps, Bioset Process and Class A Biosolids, our new products, and other products hereand then stop by booth 2007 to learn more!

Visit the conference website to view the event details and exhibition map: http://www.weftec.org. Here is the Schwing Bioset listing for the show.

We hope to see you at WEFTEC 2017!


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. 

 

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Tags: Bioset Process, Piston Pumps, Events, WEFTEC, Screw Press, Membrane Bioreactor