Effect of calcium on lead in soft-water distribution systems

被引：12

作者：

Bisogni, JJ ^{[1
]}

Nassar, IS

Menegaux, AM

机构：

[1] Cornell Univ, Dept Civil & Environm Engn, Ithaca, NY 14853 USA

[2] Associated Consulting Engineers, Beirut, Lebanon

[3] Malcolm & Pirnie Inc, Philadelphia, PA 19106 USA

来源：

JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE | 2000年 / 126卷 / 05期

关键词：

D O I：

10.1061/(ASCE)0733-9372(2000)126:5(475)

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Meeting the lead rule action level for drinking water can be difficult for soft-water systems. One concern in these systems is the formation of particulate or colloidal lead that is difficult to remove from the aqueous phase. In this preliminary study, batch and pipe-loop systems are used to assess the effect of calcium addition on lowering the concentration of particulate or colloidal lead. The addition of calcium at levels as low as 5 mg/L reduced zeta potential of lead-bound colloids and in some cases resulted in a reduction of total Pb concentration.

引用

页码：475 / 478

页数：4

共 12 条

[1]

*AM PUBL ASS, 1992, STAND METH EX WAT WA

[2]

Amirtharajah A., 1990, Water Quality and Treatment, American Water Works Association, V4th, P269

[3] THE EFFECT OF WATER-TREATMENT ON THE SPECIATION AND CONCENTRATION OF LEAD IN DOMESTIC TAP WATER DERIVED FROM A SOFT UPLAND SOURCE [J].

DEMORA, SJ ;

HARRISON, RM ;

WILSON, SJ .

WATER RESEARCH, 1987, 21 (01) :83-94

[4] CHEMICAL CHARACTERISTICS OF ADIRONDACK LAKES [J].

DRISCOLL, CT ;

NEWTON, RM .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1985, 19 (11) :1018-1024

[5]

HULSMANN AD, 1990, J INST WATER ENV MAN, V4, P19

[6]

KUENNEN RW, 1992, J AM WATER WORKS ASS, V84, P91

[7]

LEE RG, 1989, J AM WATER WORKS ASS, V81, P52

[8]

NASSAR IS, 1994, THESIS CORNELL U ITH

[9]

SCHOCK MR, 1983, J AM WATER WORKS ASS, V75, P87

[10]

SCHOCK MR, 1980, J AM WATER WORKS ASS, V72, P695

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