水资源全回收的MBR-NF新水源工艺中试研究  

Pilot-scale Study on MBR-NF Process for Complete Water Resource Reclamation from Wastewater

作　　者：薛涛[1] 张朋川[1] 张彩云[1] 车淑娟 俞开昌[1] XUE Tao;ZHANG Peng-chuan;ZHANG Cai-yun;CHE Shu-juan;YU Kai-chang(Beijing Origin Water Technology Co. Ltd., Belting 102206, China)

机构地区：[1]北京碧水源科技股份有限公司,北京102206

出　　处：《中国给水排水》2018年第9期11-14,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2014ZX07216-001)

摘　　要：针对实际城镇污水,以水质优于地表Ⅲ类(总氮<10 mg/L)、水量全回收为目标开展了MBR-NF新水源工艺中试研究。将部分NF浓水回流至MBR并达到平衡后,NF浓水中COD和Ca^(2+)浓度分别降低约40%和11%,实现了高回收率NF系统的稳定运行。在此基础上采用芬顿-生化技术处理剩余浓水,建立了水资源全回收的MBR-NF新水源工艺。NF对COD、氨氮和总磷的截留率分别高于60%、30%和75%,但对总氮基本无去除。MBR-NF工艺主要出水指标达到地表Ⅲ~Ⅱ类水质(总氮为5~10 mg/L),电耗和药剂消耗成本为1.17元/m^3,其中MBR、NF和浓水处理成本分别占39.3%、48.7%和12.0%,开发和应用低压NF膜及高回收率NF系统是降低工艺运行成本的关键。MBR-NF工艺出水水质优良,水量全回收,是一种有应用需求和发展前景的高品质再生水制备工艺。To meets the class m or （ TN 〈 10 mg/L）, a explore complete wastewater reclamation higher standard of the Environmental and ensure that the reclaimed water quality Quality Standards for Surface Water in China pilot-scale study on the MBR - NF process treating real municipal wastewater was conducted. By recirculating a part of the NF concentrate to MBR, the balanced COD and Ca2＋ concentrations of NF concentrate decreased by 40% and 11%. The high recovery NF system could run stably. The rest NF concentrate was further treated by the Fenton -biochemical technology, so the MBR -NF process for complete wastewater reclamation was established. The rejection rates of COD, NH4＋ - N and TP by NF were higher than 60%, 30% and 75%, respectively. But TN could not be removed by NF. The effluent quality of the MBR - NF process could meet the class Ⅲ or Ⅱ standard （TN = 5 - 10 mg/ L）. The operating cost of energy and chemicals consumption was 1.17 yuan/m3. The ratios of operating costs of the MBR, NF and concentrate treating units were 39.3%, 48.7% and 12.0%, respectively. Development and application of low pressure NF membrane and high recovery NF system are crucial to operating cost reduction. The MBR - NF process can produce high quality reclaimed wastewater with full water recovery. It is a feasible and promising technology for advanced wastewater reclamation.

关 键 词：城镇污水 膜生物反应器 纳滤 芬顿 再生水 

分 类 号：TU992[建筑科学—市政工程]