Hydrogenotrophic denitrification of highly saline aquaculture wastewater using hollow fiber membrane bioreactor

被引：14

作者：

Visvanathan, C. ^{[1
]}

Phong, D. D. ^{[1
]}

Jegatheesan, V. ^{[2
]}

机构：

[1] Asian Inst Technol, Environm Engn & Management Program, Klongluang 12120, Pathumthani, Thailand

[2] James Cook Univ, Sch Engn, Townsville, Qld 4811, Australia

来源：

ENVIRONMENTAL TECHNOLOGY | 2008年 / 29卷 / 06期

关键词：

hydrogenotrophic denitrification; aquaculture wastewater; membrane bioreactor; nitrate; high salinity;

D O I：

10.1080/09593330801987053

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A hydrogenotrophic denitrification system with a hollow fiber membrane was evaluated for treating and recycling synthetic aquaculture wastewater. Hollow fibers ensured bubble-less diffusion of hydrogen and subsequent removal of nitrate from the first bioreactor. The second aerobic reactor was used for biomass filtration and removal of organic matter. Nitrate and organic matter expressed as dissolved organic carbon were 50 mgl(-1) and 20 mgl(-1), respectively, in the inlet. Acclimatization of hydrogenotrophic bacteria to 10, 20 and 30 ppt of salinity was also observed. Optimum hydraulic retention time and denitrification rate corresponding to these salinities were 3, 5 and 6 h and 366.8, 226.2 and 193.2 gm(3) day(-1), respectively.

引用

页码：701 / 707

页数：7

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