深度除氟工艺处理煤化工尾水的研究  

Study on deep defluorination process for coal chemical tail water treatment

作　　者：王靖宇 高源 盛宇星[3] 魏学勇 韦凤密 WANG Jing-yu;GAO Yuan;SHENG Yu-xing;WEI Xue-yong;WEI Feng-mi(Beijing Cycle Columbus Environmental Science and Technology Co.,Ltd.,Beijing 100083,China;School of Environmental and Municipal Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]北京赛科康仑环保科技有限公司,北京100083 [2]西安建筑科技大学环境与市政工程学院,陕西西安710055 [3]中国科学院过程工程研究所,北京100190

出　　处：《应用化工》2020年第3期550-554,共5页Applied Chemical Industry

基　　金：国家重点研发计划资助(2016YFB0600505);水体污染控制与治理科技重大专项(2017ZX07402001)。

摘　　要：采用混凝沉淀、活性氧化铝吸附、树脂吸附等三种深度除氟技术对煤化工尾水处理。结果表明,混凝沉淀法最佳混凝剂为聚合氯化铝,最佳条件为初始pH为6~8,投加量为600 mg/L;活性氧化铝吸附最佳进水流量为4 BV/h,工作吸附容量为0.816 mg/mL,再生时间为90 min,再生率为96.1%;树脂吸附法最佳进水流量为8 BV/h,工作吸附容量为1.958 mg/mL,再生时间为120 min,再生率为97.7%。在最佳反应条件下,三种深度除氟技术处理煤化工尾水F-均能达到<1 mg/L的出水要求。并从除氟效果、投资、处理成本、有无二次污染等方面对这三种深度除氟工艺进行比较,确定出活性氧化铝吸附为最适宜的工艺。Coagulation precipitation,activated alumina adsorption and resin adsorption were used to remove fluoride from coal chemical tail water.The results show that the optimum coagulant for coagulation precipitation was polyaluminium chloride,the optimum initial pH was 6~8 and dosage was 600 mg/L;The optimum influent flow rate for activated alumina adsorption was 4 BV/h,the working adsorption capacity was 0.816 mg/mL,the regeneration time was 90 min,and the regeneration rate was 96.1%;The optimum influent flow rate of resin adsorption method was 8 BV/h,the working adsorption capacity was 1.958 mg/mL,the regeneration time was 120 min,and the regeneration rate was 97.7%.Under the optimum reaction conditions,all the three deep defluorination technologies can meet the effluent requirement of less than 1 mg/L.The three deep fluoride removal processes were compared in terms of fluoride removal effect,investment,treatment cost and secondary pollution.The optimum process was determined to be activated alumina adsorption.

关 键 词：除氟 混凝 活性氧化铝 树脂 

分 类 号：TQ085.4[化学工程] X703.1[环境科学与工程—环境工程]