某制革园区污水处理项目改造设计实例
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摘要
针对某制革园区污水处理系统不能满足一级A排放标准的问题,对现有污水处理系统进行整体改造。改造方案统筹布置事故水处理、混合水处理系统及中水回用系统,其中事故水处理系统采用粗格栅+提升泵站+事故水调节池+絮凝沉淀池+事故水储池;混合水处理系统采用预处理+絮凝初沉池+缺氧池+MBBR与PACT组合好氧池+二沉池+絮凝沉淀池+反硝化深床滤池+臭氧接触池工艺,出水水质达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A排放标准;中水回用系统对处理后达标水进行二氧化氯消毒,出水水质满足制革企业生产用水要求。详细介绍了污水处理项目的现状、设计水质、工艺设计方案、主要经济技术指标及调试运行等。
The current treatment system was renovated wholly to solve the unqualified effluent of a wastewater treatment process in a tannery park. In the reconstruction plan,the accident water treatment,mixed wastewater treatment system and the reclaimed wastewater reuse system were arranged as a whole,in which the accident water treatment system adopted rough grille,lifting pump station,regulation tank,flocculation sedimentation tank and storage tank. The combined process including pretreatment,primary flocculation settling tank,anoxic tank,combination of MBBR and PACT aerobic tank,secondary setting tank,flocculation and settling tank,denitrification deep bed filter and ozone contact tank were used in the mixed wastewater treatment system. The effluent quality could meet the first level A criteria of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002). The effluent disinfected by chlorine dioxide could meet the production requirement of the tannery enterprise.The present situation,designed wastewater quality,process design scheme and the main economic and technical indicators were elaborated.
The current treatment system was renovated wholly to solve the unqualified effluent of a wastewater treatment process in a tannery park. In the reconstruction plan,the accident water treatment,mixed wastewater treatment system and the reclaimed wastewater reuse system were arranged as a whole,in which the accident water treatment system adopted rough grille,lifting pump station,regulation tank,flocculation sedimentation tank and storage tank. The combined process including pretreatment,primary flocculation settling tank,anoxic tank,combination of MBBR and PACT aerobic tank,secondary setting tank,flocculation and settling tank,denitrification deep bed filter and ozone contact tank were used in the mixed wastewater treatment system. The effluent quality could meet the first level A criteria of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002). The effluent disinfected by chlorine dioxide could meet the production requirement of the tannery enterprise.The present situation,designed wastewater quality,process design scheme and the main economic and technical indicators were elaborated.
引文
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[2]刘宜龙,吴迪,刘飞,等.MBBR在工业园区废水处理升级改造中的应用[J].中国给水排水,2017,33(17):14-18.Liu Yilong,Wu Di,Liu Fei,et al.Application of MBBRin industrial park WWTP upgrading[J].China Water&Wastewater,2017,33(17):14-18(in Chinese).
[3]张龙,涂勇,郭方峥,等.化工产业为主的工业园区污水处理厂提标改造工程设计[J].中国给水排水,2014,30(18):76-80.Zhang Long,Tu Yong,Guo Fangzheng,et al.Design of upgrading and reconstruction project of wastewater treatment plant in chemical industrial park[J].China Water&Wastewater,2014,30(18):76-80(in Chinese).
[4]吴伟,张龙,刘伟京.PACT工艺系统中的吸附和生物降解性能研究[J].环境科学研究,2010,23(8):1064-1067.Wu Wei,Zhang Long,Liu Weijing.Adsorption and biodegradation effects in PACT process systems[J].Research of Environmental Sciences,2010,23(8):1064-1067(in Chinese).
[5]陈莉,雷睿,刘洋,等.反硝化深床滤池/电磁催化臭氧氧化用于污水厂升级改造[J].中国给水排水,2016,32(20):44-47.Chen Li,Lei Rui,Liu Yang,et al.Application of denitrification deep bed filter and electromagnetic catalytic ozonation to upgrading and reconstruction of wastewater treatment plant[J].China Water&Wastewater,2016,32(20):44-47(in Chinese).
[6]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.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).
[7]田文达.EGSB/水解/三级AO/臭氧接触池/BAF处理皮革废水[J].中国给水排水,2017,33(20):127-132.Tian Wenda.Tannery wastewater treatment by combined process of EGSB/hydrolysis acidification tank/three stage AO/ozone contact tank/biological aerated filter[J].China Water&Wastewater,2017,33(20):127-132(in Chinese).