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2022年《国家先进污染防治技术目录》入选技术案例丨 MBR-DF组合污水处理技术

2023-01-21 08:46:57来源:中国环保产业协会 阅读量:8584

导读:MBR-DF组合污水处理技术,适合出水水质要求高地区的污水深度处理。翠湖新水源厂采用该技术,吨水处理成本为1.8元,出水水质好,可为翠湖湿地提供高品质生态补水。DF系统运行压力较低,相较于传统的纳滤和反渗透系统,大大降低运行能耗。
  日前,生态环境部办公厅印发了2022年《国家先进污染防治技术目录(水污染防治领域)》(环办科财函〔2022〕500 号)(以下简称“目录”)。为便于各相关方使用目录,我会编制了目录典型应用案例,将陆续在微信平台上发布。所有案例均来自目录入选技术的申报材料,案例内容经业主单位和申报单位盖章确认。
 
  技术名称
 
  MBR-DF组合污水处理技术
 
  技术依托单位
 
  北京碧水源科技股份有限公司
 
  工艺路线
 
  污水经预处理后进入膜生物反应器(MBR),去除COD、TN和部分TP,MBR出水进入超低压选择性纳滤(DF)单元,去除溶解性小分子有机物、TP、重金属等。DF单元产生的浓水部分回流至MBR前端,部分经深度处理后与DF单元产水混合排放或回用。系统产生的污泥经脱水后外运处置。
 
  主要技术指标
 
  进水COD≤500mg/L、BOD5≤350mg/L、氨氮≤45mg/L、TN≤70mg/L、TP≤8mg/L,出水达到《城镇污水处理厂水污染物排放标准》(DB 11/890-2012)中A标准要求。运行压力<0.40MPa,水回收率>90%。
 
  技术特点
 
  运行压力低、水回收率高,出水水质优,运行稳定性好。
 
  适用范围
 
  出水水质要求高地区的污水深度处理。
 
  案例名称
 
  翠湖新水源厂
 
  业主单位
 
  北京碧海环境科技有限公司
 
  案例概况
 
  工程地址:北京市海淀区苏家坨镇前沙涧村。
 
  工程规模:7000m3/d。
 
  投运时间:2015年4月。
 
  验收情况:工程建设符合标准及设计要求,通过验收。
 
  工艺流程
 
  城镇污水经预处理后进入MBR生化系统,有效去除COD、氨氮、总氮和总磷。MBR产水进入DF单元,深度去除溶解性小分子有机物、总磷及重金属等。DF单元产生的浓水部分回流至生化池前端,部分与产水混合后排放。

  污染防治效果和达标情况
 
  再生水出水水质均值:COD为5.0mg/L,BOD5为0.5mg/L,氨氮为0.053mg/L,总氮为0.99mg/L,总磷为0.034mg/L。
 
  二次污染治理情况
 
  翠湖新水源厂在污水处理过程中,会产生一定量的污泥,平均值为0.15~0.2kg干污泥/m3水,处置方式为市政综合利用。
 
  主要工艺运行和控制参数
 
  生化反应池总HRT为17.8h;DF系统运行压力0.30MPa~0.38MPa。
 
  投资费用
 
  本工程总投资为5443.33万元,其中建筑工程费1060.92万元,设备购置费2768.95万元,安装工程费876.19万元,第二部分工程费用为578.73万元,基本预算费为158.54万元。
 
  运行费用
 
  吨水处理成本为1.8元。
 
  能源、资源节约和综合利用情况
 
  翠湖新水源厂出水水质好,可为翠湖湿地提供高品质生态补水。DF系统运行压力较低,相较于传统的纳滤和反渗透系统,大大降低运行能耗。
 
  原标题:2022年《国家先进污染防治技术目录》入选技术案例 | ⑴ MBR-DF组合污水处理技术

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