泡菜废水处理工程设计及运行
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摘要
针对泡菜废水高COD、高NH_3-N,高盐分等特点,采用隔油、调节池+UASB+氧化沟+二沉池+三沉池+精密过滤器处理工艺,为节约运行成本,采取常温厌氧处理,选取氧化沟工艺,磁悬浮风机曝气,剩余污泥厌氧消化及沼气回收利用等措施。实际运行结果表明,COD、NH_3-N、TN、TP去除率分别约为99%、99%、96%、99%,排放水COD在20～30 mg/L,NH_3-N、TN、TP的质量浓度分别为1～2、5～10、0.2～0.3 mg/L,可稳定达到DB51 2311-2016排放标准。直接运行费用约2.7元/m~3。
According to the characteristics of high COD,high NH_3-N and high salinity of pickle wastewater,the oil separation,regulating tank+UASB+oxidation ditch+second settling tank+triple sinking tank+precision filter treatment process were adopted.In order to save operating cost,normal temperature anaerobic was adopted,and selection of oxidation ditch process,magnetic aeration fan aeration,residual sludge anaerobic digestion and biogas recycling and other measures.The actual operation results showed that,the removal rate of COD,NH_3-N,TN and TP was about 99%,99%,96%and 99%respectively,the COD,mass concentration of NH_3-N,TN and TP in effluent was 20～30 mg/L,1～2,5～10 and 0.2～0.3 mg/L respectively,which stably met the discharge standards of DB51 2311-2016.The direct operation cost was about 2.7 yuan/m~3.
According to the characteristics of high COD,high NH_3-N and high salinity of pickle wastewater,the oil separation,regulating tank+UASB+oxidation ditch+second settling tank+triple sinking tank+precision filter treatment process were adopted.In order to save operating cost,normal temperature anaerobic was adopted,and selection of oxidation ditch process,magnetic aeration fan aeration,residual sludge anaerobic digestion and biogas recycling and other measures.The actual operation results showed that,the removal rate of COD,NH_3-N,TN and TP was about 99%,99%,96%and 99%respectively,the COD,mass concentration of NH_3-N,TN and TP in effluent was 20～30 mg/L,1～2,5～10 and 0.2～0.3 mg/L respectively,which stably met the discharge standards of DB51 2311-2016.The direct operation cost was about 2.7 yuan/m~3.
引文
[1]常庆明,赵希锦,刘继宁,等.四川泡菜产业面临的环境问题及对策研究.[J].环境科学与管理,2014,39(9):167-170.
[2]四川省岷江、沱江流域水污染物排放标准:DB51 2311-2016[S].
[3]潘涛,李安峰,杜兵.废水污染控制技术手册[M].北京:化学工业出版社,2012:429-431.
[4]张中和.给水排水设计手册:第5册[S].2版.北京:中国建筑工业出版社,2004.
[5]室外排水设计规范:GB 50014-2006[S].
[6]李娟红.氯化钠对高浓度有机废水深度厌氧处理过程中COD去除率影响的研究[D].苏州:苏州科技学院,2009.
[7]沈静.用好氧脱水污泥接种启动UASB处理柠檬酸废水的研究[D].苏州:苏州科技学院,2011.
[2]四川省岷江、沱江流域水污染物排放标准:DB51 2311-2016[S].
[3]潘涛,李安峰,杜兵.废水污染控制技术手册[M].北京:化学工业出版社,2012:429-431.
[4]张中和.给水排水设计手册:第5册[S].2版.北京:中国建筑工业出版社,2004.
[5]室外排水设计规范:GB 50014-2006[S].
[6]李娟红.氯化钠对高浓度有机废水深度厌氧处理过程中COD去除率影响的研究[D].苏州:苏州科技学院,2009.
[7]沈静.用好氧脱水污泥接种启动UASB处理柠檬酸废水的研究[D].苏州:苏州科技学院,2011.