CAJ | 학술논문

某多晶硅厂采用A/O生物接触氧化法处理生活污水，联合后续的混凝沉淀和过滤工艺，主要污染物COD、BOD、NH3-N、SS分别降至50、10、10、10 mg/L以下，达到《城市污水再生利用城市杂用水水质》（GB/T 18920—2002）要求。出水用于厂区的景观水池、绿化、冲厕等。该厂平均每月回用中水约9500 m3，可节省水费约4.43万元。系统通过PLC、在线仪表实时监控水质，其操作方便、运行稳定，具有明显的经济效益和环境效益。
모다정규엄채용A/O생물접촉양화법처리생활오수，연합후속적혼응침정화과려공예，주요오염물COD、BOD、NH3-N、SS분별강지50、10、10、10 mg/L이하，체도《성시오수재생이용성시잡용수수질》（GB/T 18920—2002）요구。출수용우엄구적경관수지、녹화、충측등。해엄평균매월회용중수약9500 m3，가절성수비약4.43만원。계통통과PLC、재선의표실시감공수질，기조작방편、운행은정，구유명현적경제효익화배경효익。
The A/O bio-contact oxidation process has been used for treating the domestic sewage in a polysilicon plant. Combined with the subsequent coagulation sedimentation and filtration processes ,the concentrations of main pollutants,such as COD,BOD,NH3-N and SS can be decreased to lower than 50,10,10,10 mg/L,respectively, reaching the Reuse of Urhan Recycling Water—Quality Standard of Urban Miscellaneous Water Consumption (GB/T 18920—2002). The effluent can be used in landscape ponds,greenbelts,flushing toilets,etc. in the plant area. The amount of reclaimed water is about 9 500 m3 a month,i.e. CNY44 300 of water cost can averagely be saved every month. The water quality is real-time monitored and controlled through the PLC and online instruments. The system is characterized by simple operation and stable running ,having obvious economic and environmental benefits.