Integrated nitrogen removal biofilter system with ceramic membrane for advanced post-treatment of municipal wastewater
| Autor: | Dae-Gun Kim, Chan-Young Yun, Young Sunwoo, Dong-Jin Son, Duk Chang, Xing-Ya Zhang, Woo-Yeol Kim, Ki-Ho Hong |
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| Rok vydání: | 2016 |
| Předmět: |
Ceramics
Denitrification Hydraulic retention time Nitrogen 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Wastewater 01 natural sciences Waste Disposal Fluid law.invention law Environmental Chemistry Waste Management and Disposal Effluent Filtration 0105 earth and related environmental sciences Water Science and Technology 021110 strategic defence & security studies Waste management Chemistry Membranes Artificial General Medicine Ceramic membrane Biofilms Biofilter Nitrification Water Pollutants Chemical |
| Zdroj: | Environmental technology. 37(23) |
| ISSN: | 1479-487X |
| Popis: | The pre-denitrification biofilm process for nitrogen removal was combined with ceramic membrane with pore sizes of 0.05–0.1 µm as a system for advanced post-treatment of municipal wastewater. The system was operated under an empty bed hydraulic retention time of 7.8 h, recirculation ratio of 3, and transmembrane pressure of 0.47 bar. The system showed average removals of organics, total nitrogen, and solids as high as 93%, 80%, and 100%, respectively. Rapid nitrification could be achieved and denitrification was performed in the anoxic filter without external carbon supplements. The residual particulate organics and nitrogen in effluent from biofilm process could be also removed successfully through membrane filtration and the removal of total coliform was noticeably improved after membrane filtration. Thus, a system composed of the pre-denitrification biofilm process with ceramic membrane would be a compact and flexible option for advanced post-treatment of municipal wastewater. |
| Databáze: | OpenAIRE |
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