Hydrogenotrophic denitrification of highly saline aquaculture wastewater using hollow fiber membrane bioreactor
Visvanathan, C., Phong, D.D., and Jegatheesan, V. (2008) Hydrogenotrophic denitrification of highly saline aquaculture wastewater using hollow fiber membrane bioreactor. Environmental Technology, 29 (6). pp. 701-707.
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Abstract
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-3day -1, respectively.
| Item ID: | 6285 |
|---|---|
| Item Type: | Article (Research - C1) |
| ISSN: | 1479-487X |
| Keywords: | hydrogenotrophic denitrification; aquaculture wastewater; membrane bioreactor; nitrate; high salinity |
| Date Deposited: | 20 Jan 2010 06:00 |
| FoR Codes: | 09 ENGINEERING > 0904 Chemical Engineering > 090409 Wastewater Treatment Processes @ 40% 09 ENGINEERING > 0904 Chemical Engineering > 090404 Membrane and Separation Technologies @ 40% 07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070401 Aquaculture @ 20% |
| SEO Codes: | 96 ENVIRONMENT > 9609 Land and Water Management > 960903 Coastal and Estuarine Water Management @ 50% 96 ENVIRONMENT > 9611 Physical and Chemical Conditions of Water > 961102 Physical and Chemical Conditions of Water in Coastal and Estuarine Environments @ 50% |
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