摘要
采用"化学除硬+外置式有机管式超滤膜+OCRO管网式反渗透"组合膜工艺处理电厂脱硫废水,产水可用于锅炉回用水.产水水质情况如下:COD、电导率、TDS、Cl-、总硅分别为50mg/L、900μS/cm、367mg/L、225mg/L、1mg/L.结果表明,此工艺可去除大多数结垢性离子和盐分,有效解决结垢堵塞问题,系统运行期间,膜通量运行稳定.分析浓水中总硅、Cl-、COD的平均质量浓度分别为18mg/L、34g/L、420mg/L,满足MVR蒸发进料要求.该组合膜工艺对电导率、TDS、COD、Cl-的去除率分别为96.5%、97.3%、95.3%、98.06%,可以稳定达到《城市污水再利用工业用水水质》(GBT 19923—2005)的要求.
The wastewater from desulfurization in a power plant was pretreated by"chemical dehardening+ external organic tube ultrafiltration membrane + OCRO pipe network reverse osmosis".The water produced is suitable for boiler reuse.The water produced by reverse osmosis water had average values of COD,conductivity,TDS,and chloride and total silicon concentrations of 50 mg/L,900μS/cm,367 mg/L,225 mg/L,1 mg/L,respectively.The results show that most of the ions and salts can be removed,which can effectively solve the problems of scaling and blockage.During the system operation,the membrane flux was stable.The average concentrations of total silicon,Cl^- and COD were 18 mg/L,34 g/L and 420 mg/L respectively,satisfying the requirements for MVR evaporation.The decreases in conductivity,TDS,COD and Cl^- concentration during this combined process were 96.5%,97.3%,95.3%and 98.06%,respectively,which meet the requirements of"The reuse of urban recycling waterWater quality standard for industry"(GB/T 18920-2002).
作者
王怀林
云金明
吴欢
刘杰
徐宗柳
WANG Huailin;YUN Jinming;WU Huan;LIUJie;XU Zongliu(Jiangsu Kaimi Membrane Technology Co.Ltd.,Nanjing 210049,China)
出处
《膜科学与技术》
CAS
CSCD
北大核心
2018年第6期105-110,共6页
Membrane Science and Technology
基金
江苏省科技成果转化专项资金(BA2016066)
关键词
有机管式膜
超滤
反渗透
脱硫废水
organic tube membrane
ultrafiltration
reverse osmosis
desulfurization wastewater
作者简介
第一作者:王怀林(1964-),男,江苏扬州人,硕士,高级工程师,从事分离膜产品的开发以及水处理技术的研究,E-mail:kaimitech@163.com.
