纳滤膜深度处理棉针织品印染废水  

Advanced Treatment of Cotton Knit Goods Dyeing Wastewater by Nanofiltration Membrane

作　　者：马文涛[1,2] 周律[2] 杨国茂 李思敏[1] 

机构地区：[1]河北工程大学城市建设学院,河北邯郸056038 [2]清华大学环境学院,北京100084 [3]江苏坤风纺织品有限公司,江苏宜兴214200

出　　处：《化工环保》2013年第2期134-139,共6页Environmental Protection of Chemical Industry

基　　金：国家水体污染控制与治理科技重大专项基金资助项目(2012ZX07301-005)

摘　　要：采用芳香聚酰胺膜（NF-1#）、复合膜（NF-2#）和聚酰胺复合膜（NF-3#）深度处理棉针织品印染废水,考察了膜分离性能及膜污染情况的影响因素。实验结果表明,在操作压力为0.5 MPa、废水温度为25~35℃、废水pH为7的条件下,NF-1#膜处理效果最佳,COD去除率最高,为76.0%~85.0%;脱盐率也最高,达90.0%。膜过滤后浓水送污水厂处理,产水回用于车间生产。操作压力增高、废水温度升高和废水pH增大均导致滤饼层阻力（Rc）和膜过滤过程中的总阻力（Rt）增加,Rc是Rt的主要组成部分,同时也是导致膜透过通量下降的主要因素。Aromatic polyamide membrane（NF-1#）,composite membrane（NF-2#） and polyamide composite membrane（NF-3#） were used in the advanced treatment of cotton knit goods dyeing wastewater.The factors affecting the separation performance and fouling of the membranes were studied.The experimental results show that under the optimum process conditions of operation pressure 0.5 MPa,wastewater temperature 25-30℃ and wastewater pH 7,the treatment effect on membrane NF-1# is the best with 76.0%-85.0% of COD removal rate and 90.0% of desalinization rate.After nanofiltration,the concentrated water is transferred into sewage treatment plant,while the product water is reused for cotton knit goods production.With the increasing of operation pressure,wastewater temperature and wastewater pH,the cake resistance（Rc） and the total resistance（Rt） of membrane are both increased.Rc is the main component of Rt,and is the main factor causing the decline of membrane permeation flux.

关 键 词：棉针织品 印染废水 纳滤 膜透过通量 废水处理 

分 类 号：TQ116.2[化学工程—无机化工]