Company Category: Sludge Thickeners

Process Wastewater Technologies LLC (PWTech) was established in 2006 following the sale of CDS Technologies, Inc. to CONTECH Construction Products. PWTech became the dedicated U.S. manufacturer of residuals handling and wet‑weather treatment technologies, carrying forward the proven product lines and engineering expertise that defined CDS’s reputation in the wastewater industry. Today, PWTech is a leading North American manufacturer and supplier of Volute™ sludge thickening and dewatering systems, as well as screening technologies widely used in municipal wastewater treatment and the CSO/SSO market. Our equipment is designed to provide reliable, energy‑efficient performance with minimal operator attention, making it a strong fit for utilities seeking long‑term, low‑maintenance solutions. PWTech’s technologies are installed throughout the United States and Canada, supporting facilities of all sizes with equipment that improves solids handling efficiency, reduces hauling costs, and enhances process stability. Our Volute™ systems are known for their compact footprint, low power consumption, and ability to handle a wide range of sludge types without the need for high‑speed rotating equipment. In the CSO/SSO sector, our screening products help municipalities manage peak flows and protect downstream processes with durable, operator‑friendly designs. The company is headquartered in Rosedale, Maryland, where all fabrication is performed using 100% American‑produced stainless steel. PWTech does not use carbon steel in any of its equipment—a distinction that sets us apart in an industry where corrosion resistance and long service life are critical. This commitment to material quality ensures that our products maintain structural integrity and performance even in demanding environments. PWTech remains focused on delivering practical, dependable technologies backed by responsive customer support. Our team works closely with consulting engineers, operators, and municipalities to ensure each installation meets the specific needs of the facility and provides long‑term value. With a strong foundation in proven designs and a dedication to continuous improvement, PWTech is proud to support the wastewater community with solutions that simplify operations and enhance treatment performance. | Process Wastewater Technologies LLC (PWTech) was formed in December 2006 as the residual manufacturer of wastewater and combined sewer overflow (CSO) products when the parent company in the U.S., CDS Technologies, Inc. was sold to CONTECH Construction Products Inc. As a manufacturer and supplier of Volute™ technologies for sludge thickening and dewatering, and screening products primarily utilized in the CSO/SSO market, we’re proud to offer the best available technologies in the applications they serve throughout North America. The company is based out of Rosedale, MD, and does all the manufacturing utilizing only American-produced stainless steel. There is no carbon steel used, which is a claim very few manufacturers in the industry can make.