Effect of Hydrous Manganese Dioxide on the Treatment of Low-Turbidity Source Water: Plant-Scale Experience

被引：9

作者：

Liu, Ruiping ^{[1
,2
]}

Sun, Lihua ^{[2
]}

Ju, Ran ^{[2
]}

Wang, Hongjie ^{[1
]}

Liu, Huijuan ^{[1
]}

Gu, Junnong ^{[3
]}

Li, Guibai ^{[2
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China

[2] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China

[3] Beijing Waterworks Grp, Ctr Water Qual Examinat & Monitoring, Beijing 100031, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL ENGINEERING | 2011年 / 137卷 / 06期

关键词：

Low-turbidity water; Permanganate; delta MnO2; Seeding effect; Aiding filtration; Run length of filters; PERMANGANATE OXIDATION; WASTE-WATER; REMOVAL; AS(III); DYES;

D O I：

10.1061/(ASCE)EE.1943-7870.0000349

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of potassium permanganate (KMnO4) preoxidation on the treatment of low-turbidity reservoir water was investigated through two years of operational data in a large-scale drinking water treatment plant (DWTP). KMnO4 facilitated the removal of pollutants [e.g., turbidity and chemical oxygen demand (CODMn)] by different units such as clarification, sand filtration, and granular activated carbon (GAC) adsorption. Although the addition of KMnO4 increased the color and total Mn concentrations, the results of removal by clarification and filtration are promising. The average run length of anthracite filters decreased from 48 to 40.8 hours after the introduction of KMnO4 and exhibited a negative correlation with KMnO4 dosages (r(2) = 0.6912). The hydrous manganese dioxide in situ formed (delta MnO2) dominated in aiding coagulation and improving filtration to enhance pollutant removal in the KMnO4 preoxidation process, and these effects were achieved at the expense of more frequent backwashing of anthracite filters. DOI: 10.1061/(ASCE) EE. 1943-7870.0000349. (C) 2011 American Society of Civil Engineers.

引用

页码：481 / 486

页数：6

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