Colour removal from landfill leachate by coagulation and flocculation processes

被引：202

作者：

Aziz, Hamidi Abdul ^{[1
]}

Alias, Salina ^{[1
]}

Adlan, Mohd. Nordin ^{[1
]}

Faridah ^{[1
]}

Asaari, A. H. ^{[1
]}

Zahari, Mohd. Shahrir ^{[1
]}

机构：

[1] Univ Sains Malaysia, Sch Civil Engn, Nibong Tebal 14300, Penang, Malaysia

来源：

BIORESOURCE TECHNOLOGY | 2007年 / 98卷 / 01期

关键词：

colour removal; coagulation and flocculation; ferric chloride; leachate; pH;

D O I：

10.1016/j.biortech.2005.11.013

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A study was conducted to investigate the efficiency of coagulation and flocculation processes for removing colour from a semi-aerobic landfill leachate from one of the landfill sites in Malaysia. Four types of coagulant namely aluminium (III) sulphate (alum), ferric (III) chloride, ferrous (II) sulphate and ferric (III) sulphate were studied using standard jar test apparatus. Results indicated that ferric chloride was superior to the other coagulants and removed 94% of colour at an optimum dose of 800 mg/l at pH 4. The effect of coagulant dosages on colour removal showed similar trend as for COD, turbidity and suspended solids. This suggested that colour in landfill leachate was mainly contributed by organic matters with some insoluble forms that exhibited turbidity and suspended solids readings. The results from this study suggested that ferric chloride could be a viable coagulant in managing colour problems associated with landfill leachate. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：218 / 220

页数：3

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