Washing characteristics of copper-containing clay sludge cake

被引：4

作者：

Hsu, GY

Wu, RM

Lee, DJ ^{[1
]}

Liu, JC

机构：

[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 10764, Taiwan

[2] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei, Taiwan

来源：

WATER RESEARCH | 1999年 / 33卷 / 01期

关键词：

washing; copper; precipitation; dissolution; modeling;

D O I：

10.1016/S0043-1354(98)00178-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This paper provides the first report on the novel washing characteristics of copper-containing clay sludge cake, which consists of a second effluent plateau concentration regime. The occurrence of such a second constant concentration regime at elevated pHs is proposed as the consequence of dissolution of cupric hydroxides precipitate that has formed and absorbed onto the clay particles. A new washing model is developed and numerically solved. Numerical results can well describe the experimental data. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：248 / 256

页数：9

共 17 条

[1]

ALLEN PA, 1995, J ENVIRON ENG-ASCE, V121, P174

[2]

BEJAN A, 1995, CONVECTION HEAT TRAN, P487

[3]

Denn M., 1980, Process Fluid Mechanics

[4] COAGULANT CONTROL IN WATER-TREATMENT [J].

DENTEL, SK .

CRITICAL REVIEWS IN ENVIRONMENTAL CONTROL, 1991, 21 (01) :41-135

[5]

FARRAH H, 1978, WATER AIR SOIL POLL, V9, P491

[6] PERMEABILITY AND WASHING CHARACTERISTICS OF FLOCCULATED KAOLINITE FILTER CAKES - WASHING CHARACTERISTICS [J].

MICHAELS, AS ;

BAKER, WE ;

BIXLER, HJ ;

VIETH, WR .

INDUSTRIAL & ENGINEERING CHEMISTRY FUNDAMENTALS, 1967, 6 (01) :33-&

[7]

PARKS GA, 1967, EQUILIBRIUM CONCEPTS

[8]

PERRY DL, 1986, GEOCHEMICAL PROCESSE

[9] EXACT SOLUTION OF A MODEL FOR DIFFUSION IN PARTICLES AND LONGITUDINAL DISPERSION IN PACKED-BEDS [J].

RASMUSON, A ;

NERETNIEKS, I .

AICHE JOURNAL, 1980, 26 (04) :686-690

[10] Washing in filtration [J].

Rhodes, FH .

INDUSTRIAL AND ENGINEERING CHEMISTRY, 1934, 26 :1331-1333

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