食品添加剂CMC生产废液预处理及其效益分析  

Pretreatment Project of Food Additive CMC Wastewater and Its Profit Analysis

作　　者：张文艺[1] 刘芳[1] 李文昱[1] 朱正伟[1] 莫玉余 彭明国[1] 

机构地区：[1]常州大学环境与安全工程学院,江苏常州213164 [2]常州市国宇环保科技有限公司,江苏常州213167

出　　处：《中国给水排水》2014年第18期106-108,共3页China Water & Wastewater

基　　金：江苏省自然科学基金资助项目(BE2012640;BY2012100);国家水体污染控制与治理科技重大专项(2012ZX07301-001)

摘　　要：常州市某食品添加剂生产企业采用三效蒸发工艺对羧甲基纤维素(CMC)生产废液进行预处理,高效、低耗地分离羟基乙酸钠和混凝土减水剂。该工程运行一年以来,平均处理CMC生产废液为135 t/d,产生冷凝液为121.5 t/d、混凝土减水剂为12.69 t/d、羟基乙酸钠为0.81 t/d,实现废液经济、环保、资源化预处理,COD去除率达95.74%,COD减排量达2.9×106kg/a。Triple-effect evaporation process was used to pretreat the CMC wastewater to separate sodium hydroxyacetate from water reducing agent for concrete in a food additive company in Changzhou. The project has been operated for one year, and condensate of 121.5 t/d, water reducing agent for concrete of 12.69 t/d and sodium hydroxyacetate of 0.81 t/d were generated from treated CMC wastewater of 135 t/d, which was achieved economically, environmentally and resourcefully. The removal rate of COD was 95.74%, and the annual reduction amount of COD was 2.9×10^6 kg.

关 键 词：羧甲基纤维素 预处理 三效蒸发 

分 类 号：X792[环境科学与工程—环境工程]