Schwing Bioset – Screw Press Dewatering
Recovering Nature's Essentials
For more than 30 years, Schwing Bioset Inc. has been helping wastewater treatment plants, mines and power generation customers by engineering material 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.
Schwing Bioset, Inc. was founded in 2006 by separating the Material Handling Division of Schwing America into its own company. This company was created to pioneer and develop high performance, remarkable material handling solutions.
In April 2006, Schwing Bioset, Inc. (SBI) moved to a new manufacturing facility in Somerset, WI. Somerset is located in the scenic Saint Croix River Valley along the Minnesota and Wisconsin border and is only one hour away from the Minneapolis/St. Paul International airport. This dynamic region is home to some of the finest summer and winter activities of the region and is an ideal setting for the continued growth of SBI.
The 20,000 square foot factory is home to the engineering and manufacturing of the high quality products Schwing Bioset offers. Schwing’s Project Management and Fluid Bed Drying teams remain located in their respective locations of Danbury, CT and Houston, TX.
Schwing Bioset is now in partnership with NuReSys to bring its Struvite Recovery Technology to North America. The NuReSys approach is customer driven and primarily problem solving, related to phosphate issues. The flexibility of the NuReSys process allows to select a number of variants and/or combination to resolve the customer’s specific and/or critical phosphate related issues.
With a wide range of machine sizes and mobile pilot units available for testing your materials, Schwing Bioset is a comprehensive solutions provider for dewatering and material handling. System Highlights • Automated control allow for unattended operations. • Long lifespan due to slow speeds and robust construction. • Wetted parts are Stainless Steel. • Screen casing is split to simplify screw removal and minimize footprint requirements. • Perforated screen allows for tight tolerances and improved performance over wedge-wire screens. • Sealing lip and screen can be replaced with screw in place. • Low washwater requirements. Dewatering operations do not need to be suspended during cleaning. Cleaning cycle is typically once per day for 3 – 5 minutes. Partner in Dewatering • Over 100 machines in service. • Mobile pilot unit available for testing your biosolids. • Widest range of unit sizes available. • Includes polymer dosing and control systems for complete solutions.
Technology Strengths, Weaknesses and Critical Indicators
Screw press technologies:
- Produces fiber for bedding, soil amendment and compost
- Used extensively on dairies across the country to reduce concerns associated with storage and application
- Do not significantly reduce nutrients from the manure stream
- Can utilize many types of technology like slope screen, screw press, rotary drum and others
- Used before many other technologies to remove coarse solids
- Minimal maintenance and operator time required
- Proven technology for nitrogen recovery, phosphorous recovery, storage reduction, GHG reduction, and odor control but with limited impact in all cases
This Technology has not been evaluated using Newtrient's 9-point scoring process because, although their process appears to be suited for use on dairy manure, Newtrient is not aware of any current North American based dairy projects. Newtrient will continue to work with Schwing Bioset to further refine the cost and performance information as information comes in with commercial dairy installations.
1. OPERATIONAL HISTORY