印染废水回用微滤膜污染控制研究  

Study on pollution control of microfiltration in reusing dyeing and printing wastewater

作　　者：陈超宇[1] 叶国祥[1] 杨岳平[1,2] 

机构地区：[1]浙江大学环境与资源学院,杭州310027 [2]浙江至美环境科技有限公司,杭州310030

出　　处：《环境工程学报》2010年第12期2735-2739,共5页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2008zx07101-006-09);绍兴市科技局2008年科技计划项目

摘　　要：采用PVDF中空纤维微滤膜处理某纺织印染厂二级生化出水,研究了膜污染控制及清洗方法。结果表明,合理的膜通量是控制膜污染、保证膜寿命的关键,采用31 L/(m2.h)左右的通量有助于膜污染的控制。氢氧化钠与次氯酸钠可分别用于日常维护清洗与恢复清洗,通过循环正洗不仅能满足清洗要求,且药剂使用量也小于反洗方法,每吨产水清洗用碱费用仅0.06元。化学清洗后再水力正洗,能进一步提高清洗效果。To study the pollution control of microfiltration,PVDF hollow fiber microfiltration membranes were used to treat dyeing wastewater.It was important to optimize the membrane flux in order to control the membrane fouling.Membrane flux of 31 L/（m2·h） was reasonable when treating wastewater.Sodium hypochlorite and sodium hydroxide was found to be effective in the chemical cleaning.Forwardwash demanded less agents compared to backwash.It only cost 0.06 yuan of sodium hydroxide producing every ton of water.Forwardwash using raw water after chemical cleaning enhanced the recovery of membrane.

关 键 词：印染废水 微滤 膜通量 跨膜压差 化学清洗 

分 类 号：X703.1[环境科学与工程—环境工程]