Severn Trent Services for major de-nitrification project in China
20 Sep 2011
Shanghai, China — Severn Trent Services has gained a contract to provide a de-nitrification system for the Zhang Gui Zhuang Wastewater Treatment Plant (WWTP) in Tianjin — the largest deep bed de-nitrification installation in China. The contract was awarded by Anhui Genda Environ., the contractor for phase I clarifier and filter installation of the new WWTP.
Under the contract, Severn Trent Services’ Tetra treatment system will help the plant meet Class IA effluent discharge standards by simultaneously removing total nitrogen (TN), total phosphorus (TP) and total suspended solids (TSS).
The Tetra Denite system is a fixed-film biological de-nitrification process that also serves as a deep bed filtration system capable of removing TN, TP and SS to meet a high standard of effluent discharge. The single-treatment solution is said to address multiple WWTP process needs by offering an economical, small footprint and virtually maintenance-free operation.
While new and improved wastewater treatment technologies are continuously being developed, fixed-film biological deep bed denitrification filters continue to set the standard for meeting the stringent limits required for advanced wastewater treatment, said Marwan Nesicolaci, vice president of international sales for Severn Trent Services
“The Zhang Gui Zhuang WWTP plays an important role in the Tianjin Clean Water Project by combining wastewater treatment, sludge processing and water reuse,” claimed Nesicolaci. “In recent years, the Tetra Denite process has helped dramatically improve wastewater quality at other treatment plants across China, helping those plants meet the stringent Class IA effluent discharge standards through the simultaneous removal of TN, TP and SS.”
The new Zhang Gui Zhuang WWTP will be located in Yao Liu Qiao County, Dong Li District, and will treat wastewater for a service area that spans 17,500 hectares. Phase I of The Zhang Gui Zhuang WWTP will treat 200,000 m3/d.
Once completed, the entire WWTP will enable the Dong Li District to raise its wastewater treatment rate to more than 95% while helping to meet the future sanitary needs of new towns in the District. The plant is expected to be the role model project for wastewater treatment, sludge processing and water reuse in Tianjin.
