GAC-amended UASB reactor for the stable treatment of toxic textile wastewater

被引：31

作者：

Kuai, L ^{[1
]}

De Vreese, I ^{[1
]}

Vandevivere, P ^{[1
]}

Verstraete, W ^{[1
]}

机构：

[1] State Univ Ghent, Fac Agr & Appl Biol Sci, Ctr Environm Sanitat, B-9000 Ghent, Belgium

来源：

ENVIRONMENTAL TECHNOLOGY | 1998年 / 19卷 / 11期

关键词：

activated sludge; colour removal; granular activated carbon; textile wastewater; toxic wastewater; UASB reactor;

D O I：

10.1080/09593331908616769

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A feasibility study was carried out in the laboratory for the sequential anaerobic/aerobic treatment of textile wastewater. The process units consisted of an anaerobic UASB (upflow anaerobic sludge blanket) reactor and a SCAS (semi-continuous activated sludge) reactor. A contact-sorption layer with GAC (granular activated carbon) was provided at the bottom of the conventional UASB reactor. The raw textile wastewater first passed through the GAC bed and then through the sludge bed. By means of the GAC bed, the top-layer granular sludge was protected from toxicants. Biological regeneration of GAG, which was enhanced via a recycle flow, was demonstrated. The combined GAC-UASB and SCAS treatments allowed a stable performance and a COD (chemical oxygen demand) and colour removal of 98 and 95%, respectively.

引用

页码：1111 / 1117

页数：7

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