DENITRIFICATION BY IMMOBILIZED SLUDGE WITH POLYVINYL-ALCOHOL GELS

被引：10

作者：

LIN, YF

CHEN, KC

机构：

[1] Department of Chemical Engineering, Tsing Hua University

来源：

WATER SCIENCE AND TECHNOLOGY | 1993年 / 28卷 / 07期

关键词：

DENITRIFICATION; IMMOBILIZED SLUDGE; POLYVINYL ALCOHOL; BIOCATALYST; NITRATE REDUCTION;

D O I：

10.2166/wst.1993.0157

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Preparations of acclimated-denitrifying sludge entrapped in phosphorylated polyvinyl alcohol (PVA) beads were used in the denitrification of wastewater. The effects of pH, temperature, and size and sludge load of biocatalyst beads on the nitrate reduction activity were examined. The operational stability of the immobilized sludge system was studied both in a batch reactor and in a CSTR. A high efficiency of denitrification (over 98%) was achieved stably in continuous operation for at least one month, Immobilization in phosphorylated PVA gel proved to be an effective, inexpensive and mild (high recovery of cell activity) method.

引用

页码：159 / 164

页数：6

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