An upgrade and reconstruction project of sewage treatment facilities under non-stop production conditions
YOU Li1,, WANG Benyang2, LI Lei2, HU Chunming1, LIU Ping1, ZHOU Li2,, 1.Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China 2.Thwater Environment Technology Beijing Co. Ltd., Beijing 100083, China
Abstract:According to the relevant requirements of the water bureau in Shunyi district, Beijing, the original sewage treatment facilities at capital airport need to be upgraded to meet the new discharge requirements. With the objective of non-stop project and non-add structures, upgrading reconstruction project includes adding superior bacteria in biochemical systems, operating the existing biochemical system in A/O mode, transforming the anaerobic tank into an anoxic tank, adding chemical phosphorus removal system (magnetic flocculation + sand filtration process) after the secondary sedimentation tank. The effluent meets the Class 1B level according to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (DB 11/890-2012). The project has been running for 12 months producing stable effluent quality compliant with the discharge standard. Key words:Capital airport/ upgrade and reconstruction/ biochemical systems/ magnetic flocculation.
图1首都机场西净化站工艺流程图 Figure1.Process flow chart of west purification station of capital airport
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1.Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China 2.Thwater Environment Technology Beijing Co. Ltd., Beijing 100083, China Received Date: 2020-04-03 Accepted Date: 2020-08-19 Available Online: 2021-09-23 Keywords:Capital airport/ upgrade and reconstruction/ biochemical systems/ magnetic flocculation Abstract:According to the relevant requirements of the water bureau in Shunyi district, Beijing, the original sewage treatment facilities at capital airport need to be upgraded to meet the new discharge requirements. With the objective of non-stop project and non-add structures, upgrading reconstruction project includes adding superior bacteria in biochemical systems, operating the existing biochemical system in A/O mode, transforming the anaerobic tank into an anoxic tank, adding chemical phosphorus removal system (magnetic flocculation + sand filtration process) after the secondary sedimentation tank. The effluent meets the Class 1B level according to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (DB 11/890-2012). The project has been running for 12 months producing stable effluent quality compliant with the discharge standard.