基于水网络优化的棉针织印染废水回用技术研究  

Reuse Processes of Cotton Knitted Fabric Printing and Dyeing Wastewater Based on Water Network Optimization

作　　者：常吟琳[1] 周律[1] 辛怡颖[1] 赖冬麟[1] 杨海军[1] 

机构地区：[1]清华大学环境学院,北京100084

出　　处：《中国给水排水》2013年第23期106-110,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07313-005)

摘　　要：印染行业目前对我国水环境污染贡献较大,且印染废水的回用率低、排放量大等问题突出。针对我国典型棉针织企业排水特点,基于清洁生产及源头控制的原则,在中试基础上,以废水回用最大化和排放最小化为出发点,采用水夹点技术和水网络优化的方法,确定污染程度较低的清废水和污染程度较高的浓废水的水质、水量。清废水直接回用生产;对于浓废水,设计了以超滤+纳滤为主的深度处理工艺,处理后出水也回用于印染生产。经济分析结果表明,该废水回用技术方案可行且效益较好。The ＂printing and dyeing industry contributes significantly to water pollution in China and produces a large amount of wastewater with a low reuse rate. The characteristics of wastewater from typical cotton knitted fabric manufacturers in China were studied. Based on the pilot experiment results, water pinch technology and water network optimization methods were employed to determine the water quality and flow of both slightly and highly polluted wastewater. The methods were based on the princi- ples of cleaner production and wastewater source separation to maximize the reuse rate of wastewater and minimize the discharge quantity. The slightly polluted wastewater was directly reused to the production processes while the highly polluted wastewater was treated by ultrafihration combined with nanofihration before reuse. An economical analysis indicated that this reuse process was cost-effective.

关 键 词：棉针织印染废水 水夹点 水网络 回用工艺 

分 类 号：X703[环境科学与工程—环境工程]