反硝化滤池用于城镇污水处理厂提标改造
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摘要
在上海市水污染防治行动中,城镇污水处理厂出水水质要求达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A标准,技术重点是实现总氮指标的控制。某城镇污水处理厂在提标改造工程中,深度处理采用反硝化滤池,总设计规模为24×10~4m~3/d,其中设备结合实际运行情况按18×10~4m~3/d规模配置。运行结果表明,系统对硝态氮、总氮具有非常稳定的去除效果,出水总氮稳定在10 mg/L以下;滤池微生物群落特征和溶解氧变化,可以作为考察滤池运行状态的必要辅助。经估算,该工程新增的直接运行费用为0. 012元/m~3。
In the action for the prevention and control of water pollution in Shanghai,the final effluent quality of urban wastewater treatment plants should reach the first level A in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The technical focus is how to control total nitrogen index. The denitrification filter was adopted in advanced treatment for upgrading and reconstruction project of an urban wastewater treatment plant. The total design capacity was 240 000 m~3/d. The equipment was configured according to the scale of 180 000 m~3/d according to the actual operation. The result showed that the system had a stable removal efficiency of nitrate nitrogen and total nitrogen. The effluent total nitrogen was stably below 10 mg/L. The microbial characteristics and changes tendency of dissolved oxygen were observed to evaluate the operation status of the filter as necessary assistance. The increasing direct operation cost was about 0. 012 yuan/m~3 wastewater.
In the action for the prevention and control of water pollution in Shanghai,the final effluent quality of urban wastewater treatment plants should reach the first level A in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The technical focus is how to control total nitrogen index. The denitrification filter was adopted in advanced treatment for upgrading and reconstruction project of an urban wastewater treatment plant. The total design capacity was 240 000 m~3/d. The equipment was configured according to the scale of 180 000 m~3/d according to the actual operation. The result showed that the system had a stable removal efficiency of nitrate nitrogen and total nitrogen. The effluent total nitrogen was stably below 10 mg/L. The microbial characteristics and changes tendency of dissolved oxygen were observed to evaluate the operation status of the filter as necessary assistance. The increasing direct operation cost was about 0. 012 yuan/m~3 wastewater.
引文
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[2]严国奇,张丽丽.七格三期污水处理厂反硝化深床滤池的调试与运行[J].中国给水排水,2017,33(16):127-132(in Chinese).Yan Guoqi,Zhang Lili.Commissioning and operation of deep-bed denitrification filter in Qige phaseⅢwastewater treatment plant[J].China Water&Wastewater,2017,33(16):127-132(in Chinese).
[3]周晓黎,孙迎雪,石娜,等.反硝化生物滤池生物膜胞外聚合物空间分布特征[J].环境工程学报,2017,11(5):2836-2844.Zhou Xiaoli,Sun Yingxue,Shi Na,et al.Spatial distribution characteristics of extracellular polymeric substances in a denitrification biological filter[J].Chinese Journal of Environmental Engineering,2017,11(5):2836-2844(in Chinese).
[4]刘凯,王海燕,马名杰,等.温度对城市污水厂尾水反硝化MBBR深度脱氮的影响[J].环境科学研究,2016,29(6):877-886.Liu Kai,Wang Haiyan,Ma Mingjie,et al.Influence of temperature on nitrogen removal from wastewater treatment plant effluent by denitrification MBBR[J].Research of Environmental Sciences,2016,29(6):877-886(in Chinese).
[5]罗志腾.水污染控制工程微生物学[M].北京:北京科学技术出版社,1988.Luo Zhiteng.Microbiology for Water Pollution Control Engineering[M].Beijing:Beijing Science&Technology Press,1988(in Chinese).
[6]刘欢,王源,骆灵喜,等.城市污水处理厂高溶解氧尾水脱氮研究[J].广东化工,2016,43(14):26-28.Liu Huan,Wang Yuan,Luo Lingxi,et al.Study on the nitrogen removing capacity along the path of biological denitrification filter[J].Guangdong Chemical Industry,2016,43(14):26-28(in Chinese).
[7]胡洁,刘怡心,张辉,等.曝气沉砂池跌水充氧对反硝化影响及改造建议[J].安徽科技,2018(5):48-51.Hu Jie,Liu Yixin,Zhang Hui,et al.Effects on denitrification of reoxygenation in dropping water&improving suggestions for aerated sand basin[J].Anhui Science&Technology,2018(5):48-51(in Chinese).
[8]唐仲民,戴文权.湖南怀化梅子湾水厂过滤系统的技术改造[J].中国给水排水,2017,33(12):79-82.Tang Zhongmin,Dai Wenquan.Renovation of filtration system in Meiziwan Waterworks in Huaihua City of Hunan Province[J].China Water&Wastewater,2017,33(12):79-82(in Chinese).
[9]李亚林,袁寿其,陈义春,等.快滤池进水渠道内堰板的正交试验与优化设计[J].华中科技大学学报:自然科学版,2015(1):96-100.Li Yalin,Yuan Shouqi,Chen Yichun,et al.Orthogonal test and optimization design of weir plate in the water channel of rapid filter[J].Journal of Huazhong University of Science and Technology:Nature Science Edition,2015(1):96-100(in Chinese).
[10]Vidal S,Rocha C,Galv2o H.A comparison of organic and inorganic carbon controls over biological denitrification in aquaria[J].Chemosphere,2002,48(4):445-451.