复配型聚合氯化铝处理低温高浊高碱水研究  

Study on Treatment of Low Temperature,High Turbidity and High Alkali Water by Composite Polyaluminum Chloride

作　　者：李浩列 王磊 史立达 LI Haolie;WANG Lei;SHI Lida

机构地区：[1]中铝山东有限公司,山东淄博255000

出　　处：《绿色矿冶》2023年第3期50-53,共4页Sustainable Mining and Metallurgy

摘　　要：新疆某水厂处理低温高浊高碱水时存在矾花沉降困难、出水浊度偏高的问题,能源消耗和运行成本高。本文从强化工艺混凝效果角度出发,将铁盐和硫酸铝分别与PAC复配聚合得到PAFC和PACS,以PAFC和PACS作为混凝剂进行水处理实验,并添加阴离子助凝剂PAM,研究复配混凝剂处理低温高浊高碱水的效果。实验结果表明,当饮用水级黄PAFC和黄PACS添加量在50 mg/L时,出水浊度分别降至7.3 NTU、1.58 NTU,达到水厂出水要求;添加阴离子助凝剂PAM后,尤其是选用黄PACS搭配阴PAM,出水浊度降至0.34 NTU。采用黄PACS或PACS+阴PAM处理低温高浊高碱原水,药耗可降低37.5%,漂白粉用量降低40%,达到节约能源和降低运行成本的目标。When dealing with low temperature,high turbidity and high alkali water in a water plant in Xinjiang,there were problems of difficult settlement of alum flower and high turbidity of effluent,and high energy consumption and operation cost.In this paper,from the perspective of strengthening the coagulation effect of the process,PAFC and PACS were obtained by compounding iron salt and aluminum sulfate with PAC respectively.PAFC and PACS were used as coagulants for water treatment experiments,and anionic coagulant PAM was added.The effect of compound coagulants on the treatment of low temperature,high turbidity and high alkali water was studied.The experimental results show that when the dosage of PAFC and PACS is 50 mg/L,the turbidity of the effluent is reduced to 7.3 NTU and 1.58 NTU respectively,which meets the requirements of the water plant.After the addition of anionic coagulant PAM,especially the use of drinking water level PACS with anionic PAM,the effluent turbidity decreased to 0.34 NTU.Using drinking water level PACS or PACS+anionic PAM to treat low temperature,high turbidity and high alkali raw water,the drug consumption can be reduced by 37.5%,and the amount of bleaching powder can be reduced by 40%,achieving the goal of saving energy and reducing operating costs.

关 键 词：水处理 出水浊度 PAC 混凝剂 复配氯化铝 PAFC PACS 能源消耗 

分 类 号：TF821[冶金工程—有色金属冶金] TU991.2[建筑科学—市政工程]