IMMOBILIZATION OF NITRIFYING BACTERIA IN POROUS PELLETS OF URETHANE GEL FOR REMOVAL OF AMMONIUM NITROGEN FROM WASTE-WATER

被引：9

作者：

SUMINO, T ^{[1
]}

NAKAMURA, H ^{[1
]}

MORI, N ^{[1
]}

KAWAGUCHI, Y ^{[1
]}

TADA, M ^{[1
]}

机构：

[1] JAPAN SEWAGE WORKS AGCY,TODA,SAITAMA 335,JAPAN

来源：

APPLIED MICROBIOLOGY AND BIOTECHNOLOGY | 1992年 / 36卷 / 04期

关键词：

D O I：

暂无

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The effects of immobilizing materials on the activity of nitrifying bacteria and removal of ammonium nitrogen (NH4-N) from waste-water by immobilized nitrifying bacteria were investigated using six urethane prepolymers. With a urethane prepolymer containing 2.27% free isocyanate, a high activity yield of nitrifying bacteria was obtained. There was a drastic improvement over the conventional method of immobilization by acrylamide in the activity yield. Inorganic synthetic waste-water was treated at a high loading rate of 0.24 kg N . m-3 . day-1. The NH4-N concentration of the effluent could be reduced to 2 mg . l-1 or less and the removal was 90%. The life of the pellets in terms of activity was at least 120 days.

引用

页码：556 / 560

页数：5

共 8 条

[1] HYDROPHILIC URETHANE PREPOLYMERS - CONVENIENT MATERIALS FOR ENZYME ENTRAPMENT [J].