LAKE-SEDIMENTS AS POTENTIAL SOURCES OF TRIHALOMETHANE PRECURSORS

被引：12

作者：

MARTIN, AB ^{[1
]}

COOKE, GD ^{[1
]}

CARLSON, RE ^{[1
]}

机构：

[1] KENT STATE UNIV,WATER RESOURCES RES INST,KENT,OH 44242

来源：

WATER RESEARCH | 1993年 / 27卷 / 12期

关键词：

TRIHALOMETHANES; SEDIMENTS; WATER SUPPLY; THM PRECURSORS; LAKE MANAGEMENT;

D O I：

10.1016/0043-1354(93)90109-U

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Trihalomethanes (THMs) form when chlorine reacts with certain naturally-occurring organic molecules (THM precursors) during the disinfection of drinking water. THMs are believed to have significant carcinogenic and mutagenic properties. The elucidation of THM precursor sources is important because source management may lower costs and increase effectiveness of in-plant treatments. This study investigated the importance of lake and reservoir sediments as a THM precursor source. Sediments collected from littoral and profundal areas of Lake Rockwell Reservoir (Portage County, Ohio) and from a nearby natural take (East Twin Lake) were kept in the dark for 21 days at 20-degrees-C to estimate release rates of THM precursors. All sediments had significant THM precursor releases relative to non-sediment controls. Anaerobic conditions produced significantly less precursors than during an aerobic incubation. Littoral sediment precursor release rate (mug THMs/m2/day) was significantly greater than precursor release rates for lake and reservoir profundal sediments. The importance of sediment THM precursor release relative to other sources is discussed.

引用

页码：1725 / 1729

页数：5

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