摘要
以硅酸钠和四氯化钛为主要原料,制备了新型聚硅酸钛絮凝剂PTSC,考察Si/Ti摩尔比、pH值和活化时间对PTSC絮凝剂强化混凝处理模拟废水性能的影响。结果表明,在Si/Ti摩尔比为0.5,pH值为9,活化时间在12～48 h时,所制备的PTSC絮凝剂对高岭土-腐殖酸模拟废水混凝性能较优。将其用于实际焦化废水混凝预处理后,对浊度、UV254、COD和DOC都具有较好的去除性能,去除率分别达到55%,11%,25%,30%。
A new type of PTSC(poly titanium-silicate-chloride)flocculant was prepared with sodium silicate and titanium tetrachloride as the main raw materials.The effects of the molar ratio of Si/Ti,pH and activation time on the PTSC flocculation behaviors of simulated wastewater were investigated.The results showed that the obtained PTSC,prepared under the condition of the Si/Ti molar 0.5,pH 9 and the activation time was within 12~48 h,had the best coagulation performance for kaolin-humic acid simulated wastewater.After being used in the actual coking wastewater coagulation pretreatment,it was found that the PTSC also exhibited high removal of turbidity,UV 254,COD and DOC,which could reach 55%,11%,25%and 30%,respectively.
作者
孙普
李恩泽
王淑军
杜志平
程芳琴
SUN Pu;LI En-ze;WANG Shu-jun;DU Zhi-ping;CHENG Fang-qin(Institute of Resources and Environmental Engineering,Shanxi University,ShanxiCollaborative Innovation Center of High Value-added Utilization of Coal-related Wastes,State EnvironmentalProtection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources,Taiyuan 030006,China)
出处
《应用化工》
CAS
CSCD
北大核心
2019年第2期341-344,349,共5页
Applied Chemical Industry
基金
NSFC-山西煤基低碳联合基金重点项目(U1610222)
三晋学者计划专项经费资助
关键词
聚硅酸钛
焦化废水
混凝
有机污染物
poly titanium-silicate-chloride
coking wastewater
coagulation
organic pollutants
