Diversified Technical Route for Implementation of Stricter Discharge Standard——Case of the Upgrading and Reconstruction Project of a WWTP in Jiangsu Province
Jiangsu Province's Discharge Standard of Main Water Pollutants for Municipal Wastewater Tratment & Key Industries of Taihu Area(DB 32/1072-2018)was officially released and implemented on 1 June 2018.According to the requirements of this local standard,a wastewater treatment plant(WWTP)in the province completed a plant-wide upgrading and reconstruction at the end of 2020,and the current effluent meets the standards and operates efficiently and stably.The total design scale of the WWTP's wastewater treatment is 300 000 m3/d.The WWTP has been running continuously for more than 30 years,during the period after the 2008 class A upgrading.The part of the facilities and equipment construction and operation has a long period of time,and the actual scale of treatment has decreased.This upgrading project has carried out comprehensive and in-depth technical research on process operation efficiency evaluation and optimization operation,and selected multiple schemes and adopted diversified technical routes according to local conditions.Through the comprehensive upgrading work such as targeted capacity increase and upgrading of equipment and facilities,under the condition of normal operation of the WWTP without stopping production,various difficulties such as tight land,short construction period and difficult transformation have been overcome,and the double upgrading treatment effect of the designed water treatment and high discharge standard water has been achieved.The article introduces the engineering reconstruction design overview of the WWTP,transformation process and difficult features,the main design parameters,analyses of its operating results and economic indicators,which can provide a certain reference for similar WWTP upgrading and reconstruction projects.
wastewater treatment plant(WWTP)Taihu Areadischarge standardupgrading and reconstructiontechnical route
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