几种无机混凝剂除浊性能的比较研究  

Comparative Study on the Coagulation Performance of Several Inorganic Coagulants

作　　者：姜柏敏 励炜定 王丽丽 Jiang Baimin;Li Weiding;Wang Lili(Jiyang College of Zhejiang A&F University,Zhuji 311800,China;College of Environmental and Resources Sciences of Zhejiang A&F University,Hangzhou 311300,China)

机构地区：[1]浙江农林大学暨阳学院,浙江诸暨311800 [2]浙江农林大学环境与资源学院,浙江杭州311300

出　　处：《广东化工》2024年第15期32-34,共3页Guangdong Chemical Industry

基　　金：暨阳533人才项目(JY21E0102)。

摘　　要：本文以校园湖湖水为混凝对象,研究硫酸铁、氯化铝、聚合氯化铝三种混凝剂的混凝性能。研究表明,三种混凝剂浊度去除率均随着投药量的增加而增加,硫酸铁、氯化铝、聚合氯化铝的最高去除率分别为95.1%、87.1%和90.5%。在25℃~55℃范围内,三种混凝剂的除浊效率变化不大,氯化铝的除浊效率最为稳定,硫酸铁和聚合氯化铝的除浊效率先增加后减小。氯化铝在碱性条件下的除浊效率低于酸性和中性条件下,硫酸铁的除浊效率随pH增加而提高,聚合氯化铝在中性条件下除浊效率最高。在常温、中性条件下三种混凝剂均可得到较好的混凝效果。当以高岭土、膨润土为混凝对象时,聚合氯化铝和硫酸铁去除率均达90%以上。The coagulation performance of three coagulants,including FS(Ferric sulfate),AC(Aluminium chloride),and PAC(Polyaluminum chloride),is studied with campus lake water as the raw water.It is shown that the turbidity removal rate of all three coagulants gradually increases with the increase of dosage of coagulants,and the highest removal rate are 95.1%,87.1%,and 90.5%for FS,AC,and PAC,respectively.Within the range of temperature 25℃~55℃,the turbidity removal rate of coagulants changes unconspicuously.The turbidity removal rate of AC remains a high level,while that of FS and PAC increases and then decreases a little.The turbidity removal rate of AC is higher in the alkaline condition than in the acidic and neutral conditions.The turbidity removal rate of SF increases with the increasing of pH,and PAC shows the highest turbidity removal rate in neutral condition.Good coagulation effect can be achieved under normal temperature and neutral conditions for the three coagulants.When kaolin and bentonite are used as coagulation objects,the removal rate of PAC and FS can basically reach over 90%,both of which have good performance.

关 键 词：无机混凝剂 混凝 硫酸铁 氯化铝 聚合氯化铝 

分 类 号：TQ[化学工程]