ZwitterCo

ZwitterCo, based in Woburn, Massachusetts, develops zwitterionic membrane technology and integrated filtration systems for water treatment and industrial process separation. The company's core innovation, ZwitterShield chemistry, creates membrane surfaces that attract water molecules while actively resisting organic fouling from TOC, COD, and oil and grease, enabling operation in streams that would rapidly foul conventional membranes. Three membrane product lines serve distinct markets. The Evolution line provides sanitary membranes for food and dairy processing, including PCM modules for whey and milk protein concentration, RO modules for skim milk concentration and permeate polishing, and SF modules for high-solids applications, all FDA-compliant for whey and milk processing. The Elevation line targets water and wastewater treatment with BWHR-LE RO membranes for wastewater polishing and process water treatment, and High Pressure RO membranes for high-recovery applications. The Expedition line features Superfiltration membranes engineered for extreme BOD, COD, and FOG conditions in high-strength industrial wastewater. ZwitterCo also offers engineered integrated filtration systems available as rental or purpose-built solutions. The company serves landfill leachate, produced water, refinery, food and dairy, brewery and distillery, grain processing, and biorefining markets, with partnerships including Solugen, Ecolab, Nijhuis Saur Industries, and ESMIL.