锰酸钾预氧化在混凝过程中的助凝作用  

The Coagulation-supporting Effect of Pre-oxidation of Potassium Manganate in the Process of Coagualtion

作　　者：赵富旺[1] 李星[1] 杨艳玲[1] 

机构地区：[1]北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124

出　　处：《北京工业大学学报》2009年第11期1527-1531,共5页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(50678007);北京市属市管高校人才强教计划资助项目(05004014200607);北京市教委科技发展计划资助项目(KM200610005025)

摘　　要：研究了锰酸钾预氧化对混凝过程的助凝作用.结果表明,锰酸钾对于试验水样具有明显的助凝作用,在1 L水样中,锰酸钾投量为2.0 mg时,沉后水的浊度去除率由单独投加8.0 mg硫酸铝的88.61%提高到95.59%;原水弱酸性不利于其助凝作用的发挥,中性和弱碱性对其助凝效果有利;原水中锰离子的存在有助于锰酸钾预氧化助凝去除浊度;应在混凝剂投加前投加锰酸钾;在最佳投药量下,预氧化3 min就可以使沉后浊度去除率超过90.00%.对于高浊度水,锰酸钾也有很好的助凝作用.The coagulation-supporting effect of pre-oxidation of potassium manganate in the process of coagulation was studied in this paper.The experimental results showed that the coagulation-supporting effect of potassium manganate was obvious. When the dosage of potassium manganate was 2.0 mg/L,the turbidity removal efficiency of sedimentation water was 95.59%.However,when the dosage of Al2(SO4)3 was 8.0 mg/L without adding potassium manganate,the turbidity removal efficiency of sedimentation water was only 88.61%...

关 键 词：锰酸钾 预氧化 混凝 助凝 

分 类 号：TU991.2[建筑科学—市政工程]