污水处理厂尾水在污泥处理厂的再生利用实践  

Application of Regeneration and Utilization of Tail Water from WWTPs to Sludge Treatment Plants

作　　者：缪平 MIAO Ping(Shanghai Tingying Environmental Technology Co.,Ltd.,Shanghai 201707,China)

机构地区：[1]上海汀滢环保科技有限公司,上海201707

出　　处：《净水技术》2024年第S01期165-170,240,共7页Water Purification Technology

摘　　要：本工程采用“活性炭过滤器+反渗透”的组合工艺,实现污水处理厂一级A排放标准的尾水有效再生利用,满足污泥处理厂杂用水和工业用水的需求。工程设计规模为560 t/d,其中杂用水日用水量为270 t,工业用水日用水量为183.5 t。实践运行结果表明,污水处理厂尾水进入反渗透的电导率平均值为1 167.6μS/cm时,反渗透出水电导率平均值为24.4μS/cm,脱盐率稳定在97.5%以上,出水总硬度小于0.03 mmol/L,总碱度小于2 mmol/L,其中,均满足《城市污水再生利用城市杂用水水质》(GB/T18920—2020)和《城市污水再生利用工业用水水质》(GB/T 19923—2005)中的水质标准要求。杂用水和工业用水制水成本分别为0.34元/t和1.67元/t,预计每年可节约16.55万t新鲜自来水,实现了节水和降本的双重目标,减碳效益明显。The project adopts a combination process of"activated carbon filter+reverse osmosis"to achieve effective regeneration and utilization of the effluent of the WWTPs first class A critria,meeting the needs of miscellaneous water and industrial water in the sludge treatment plant.The engineering design scale is 560 tons/day,with a daily water consumption of 270 tons for miscellaneous water and 183.5 tons for industrial water.The practical operation results show that the average conductivity of the wastewater from the WWTP entering reverse osmosis is 1167.6μS/cm,the average conductivity of the reverse osmosis effluent is 24.4μS/cm,with a stable desalination rate of over 97.5%,the total hardness of the effluent is less than 0.03 mmol/L,and the total alkalinity is less than 2 mmol/L,all of which meet the water quality standards requirements of The Reuse of Urban Recycling WaterWater Quality Standard for Urban Miscellaneous Use(GB/T 18920-2020)and The Reuse of Urban Recycling Water-Water Quality Standard for Industuial Uses(GB/T 19923—2005).The cost of miscellaneous water and industrial water production is 0.34 yuan/ton and 1.67 yuan/ton,respectively.It is expected to save 165500 tons of fresh tap water annually,achieving the dual goals of water conservation and cost reduction,significant carbon reduction benefits.

关 键 词：再生利用 尾水 反渗透 活性炭 制水成本 

分 类 号：X703[环境科学与工程—环境工程]