新型混凝剂聚硅酸铁铝的制备及其混凝性能  

PREPARATION OF A NEW COAGULANT PSAF AND ITS COAGULATION CAPABILITY

作　　者：蔡忠[1] 胡翔[1] 米建英[2] 赵瑞军[3] 刘超 

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]国家安全生产监督管理总局,北京100713 [3]中国海洋石油总公司,北京100010 [4]北京实创爱尔索环保科技有限公司,北京100085

出　　处：《水处理技术》2007年第11期20-22,共3页Technology of Water Treatment

基　　金：教育部留学回国人员基金资助

摘　　要：聚硅酸铁铝(PSAF)是一种新型无机高分子混凝剂,因其高效的混凝性能,使用条件宽,药剂用量少,残留浓度低等而受到广泛关注。采用一步法用硅酸钠、硫酸铝(氯化铝)和硫酸铁(氯化铁)合成PSAF混凝剂,考察了不同制备条件对混凝剂混凝性能的影响,确定混凝剂的最佳制备工艺条件为:常温,(Fe+Al)/Si摩尔比为5:1,Fe/Al摩尔比为1:1,浓度(以硫酸盐计)为200 g/L。结果表明:此条件下合成的PSAF混凝剂性能优良,储存时间长。Polysilicate aluminum ferric （PSAF）, a new inorganic polymer coagulant, has been extensively concerned, owing to its high-effective coagulation performance, wide applicable fields, less chemical dosage, low residual concentration, etc. PSAF was prepared through one-step synthesis by using Na：SiO3.9H2O, Al2（SO4）3 （or AlCl3） and Fe2（SO4）3 （or FeCl3）; the influences of different conditions on the coagulation ability of PSAF were evaluated and the optimal preparation conditions were achieved as follows： ordinary temperature, the mole ratio of （Fe＋AI） to Si was 5, the mole ratio of Fe to AI was 1, the mass concentration （based on sulfate） was 200 g/L. Experimental results indicated that the prepared PSAF under these conditions has excellent coagulation efficiency and relatively long storage period.

关 键 词：聚硅酸铁铝 混凝 浊度 无机高分子混凝剂 

分 类 号：TU991.22[建筑科学—市政工程]