摘要
以Al2O3和CaCO3为原料在高温下进行焙烧后酸溶、聚合、干燥制备了新型的无机高效混凝剂聚合氯化铝钙,并对其合成条件进行了详细的研究,结果表明:最佳的原料配比(Al2O3∶CaCO3)为3∶2,提高焙烧温度利于产品的合成,最佳酸溶时间为3h·对合成的聚合氯化铝钙在废水处理中的应用进行了初步研究,取得了满意的效果·
Polymeric aluminum-calcium chloride was prepared as a new inorganic flocculant instead of the prevailing polymeric aluminum chloride by which the sludge formed in wastewater treatment process is poor in dehydration. The aluminum oxide and calcium carbonate were taken as its materials and its preparation was in accordance to the steps as follows: baking them at high temperature; acid-dissolution; polymerization and dehydration. The synthesizing conditions are studied particularly and the optimal experimental parameters are thus obtained, i.e., the optimum proportion of raw materials (Al_2O_3∶CaCO_3)is 3∶2; the optimum time for acid-dissolution is 3h and higher baking temperature is helpful for the synthesis process. The preliminary application of the new flocculant to waste water treatment was proved successful, and its performance was also proved superior to the prevailing polymeric aluminum chloride.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第5期500-503,共4页
Journal of Northeastern University(Natural Science)
基金
教育部科学技术研究重点项目(03053)
关键词
聚合氯化铝
AL2O3
CACO3
聚合氯化铝钙
无机絮凝剂
合成条件
polymeric aluminium chloride
Al_2O_3
CaCO_3
polymeric aluminum-calcium chloride
inorganic flocculant
synthesizing conditions
