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Characteristic and correlation analysis of influent and energy consumption of wastewater treatment plants in Taihu Basin

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Frontiers of Environmental Science & Engineering 2019年第6期13卷 45-58页

作者： Luxi Zou Huaibo Li Shuo Wang Kaikai Zheng Yan Wang Guocheng Du Ji Li Jiangsu Key Laboratory of Anaerobic Biotechnology School of Environment and Civil EngineeringJiangnan UniversityWuxi 214122China Jiangsu College of Water Treatment Technology and Material Collaborative Innovation Center Suzhou 215009China Department of Civil Engineering Schulich School of EngineeringUniversity of CalgaryCalgary T2N 1N4Canada Ministry Key Laboratory of Industrial Biotechnology School of BiotechnologyJiangnan UniversityWuxi 214122China

The water quality and energy consumption of wastewater treatment plants(WWTPs)in Taihu Basin were evaluated on the basis of the operation data from 204 municipal WWTPs in the basin by using various statistical *** influent ammonia nitrogen(NH3-N)and total nitrogen(TN)of WWTPs in Taihu Basin showed normal distribution,whereas chemical oxygen demand(COD),biochemical oxygen demand(BOD5),suspended solid(SS),and total phosphorus(TP)showed positively skewed *** influent BOD5/COD was 0.4%-0.6%,only 39.2%SS/BOD5 exceeded the standard by 36.3%,the average BOD5/TN was 3.82,and the probability of influent BOD5/TP>20 was 82.8%.The average energy consumption of WWTPs in Taihu Basin in 2017 was 0.458 kWh/m^*** specific energy consumption of WWTPs with a daily treatment capacity of more than 5×10^4 m^3 in Taihu Basin was stable at 0.33 kWh/m^3.A power function relationship was observed between the reduction in COD and NH3-N and the specific energy consumption of pollutant reduction,and the higher the pollutant reduction is,the lower the specific energy consumption of pollutant reduction *** addition,a linear relationship existed between the energy consumption of WWTPs and the specific energy consumption of influent volume and pollutant ***,upgrading and operation with less energy consumption of WWTPs is imperative and the suggestions for Taihu WWTPs based on stringent discharge standard are proposed in detail.

关键词： Taihu Basin Wastewater treatment plant influent characteristics Energy consumption evaluation Specific energy consumption SPSS correlation analysis

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