H_2O_2预氧化-混凝沉淀组合工艺处理黑臭水试验研究  

Experimental Study on Treatment of Black and Odorous Water by H_2O_2 Pre-oxidation-coagulating Sedimentation Combined Process

作　　者：刘亚南 杨延梅[1] 蒋进元[2] 王宏亮[2] 戴建坤[2] 张伟[2] 袁震[2] 李娇 LIU Ya-nan;YANG Yan-mei;JIANG Jin-yuan;WANG Hong-liang;DAI Jian-kun;ZHANG Wei;YUAN Zhen;LI Jiao(National Engineering Research Center for Inland Waterway Regulation,Chongqing Jiaotong University,Chongqing 400074,China;Chinese Research Academy of Environmental Sciences,Beijing 400012,China)

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074 [2]中国环境科学研究院,北京100012

出　　处：《科学技术与工程》2018年第31期105-111,共7页Science Technology and Engineering

摘　　要：针对H_2O_2预氧化-混凝沉淀组合工艺处理黑臭水效果进行研究。H_2O_2作为预氧化剂,自制无机高分子聚硅酸铁镁作为混凝剂,采用正交试验确定聚硅酸铁镁最佳制备条件;使用扫描电镜对其表面形貌进行表征分析;并与聚合硫酸铁、聚合氯化铝两种混凝剂絮凝性能进行对比分析。试验结果表明,聚硅酸铁镁絮凝性能优于聚合硫酸铁、聚合氯化铝;在整个投加剂量范围内,H_2O_2预氧化-混凝沉淀法去除COD_(Cr)和UV_(254)效果均优于单一混凝沉淀工艺,COD_(Cr)最高去除率从69. 61%提升到78. 97%; UV_(254)最高去除率从39. 80%提升到45. 25%,其中COD_(Cr)去除率最高相差12. 03%,UV_(254)最高相差9. 07%,混凝剂在较高投加量下,预氧化能强化后续处理工艺,降低水样余浊。Black and odorous water were treated by process of H 2O 2 pre-oxidation-coagulating sedimentation.H 2O 2 as preoxidant,self-made poly ferric magniesum silicate as coagulant,orthogonal experiment was used to optimize the preparation conditions of poly ferric magniesum silicate;characterization of surface morphology was used scanning electron microscopy and compared with two kinds of coagulants,polyferric sulfate and polyaluminum chloride.The experimental results show that the flocculation performance of magnesium silicate is better than that of polyferric sulfate and polyaluminum chloride.In the whole dosage range,the effect of H 2O 2 pre-oxidation-coagulating sedimentation method to remove COD Cr and UV 254 is better than that of single coagulation sedimentation process,the maximum removal rate of COD Cr is increased from 69.61%to 78.97%,and the maximum removal rate of UV 254 is increased from 39.80%to 45.25%,the highest difference of COD Cr removal rate is 12.03%,and the maximum difference of UV 254 is 9.07%.Under the high dosage of coagulant,the preoxidation can strengthen the subsequent treatment process and reduce the turbidityof water sample.

关 键 词：预氧化 聚硅酸铁镁 混凝沉淀 黑臭水 

分 类 号：X703[环境科学与工程—环境工程]