Keita NISHIYAMA
Problems and Measures to Anaerobic Municipal Wastewater Treatment Process
Akiyoshi OHASHI
There are two problems in anaerobic municipal wastewater treatment process. The first, formation and maintenance of anaerobic microbial biofilms are difficult treating low strength wastewater such as municipal wastewater result in good effluent quality cannot achieve. The second, a part of produced methane dissolves in effluent of anaerobic wastewater treatment by mass transfer phenomenon result in global warming runs off by release of dissolved methane to the atmosphere. The purpose of this study was to establish the measures to anaerobic municipal wastewater treatment process. A feasibility test of Expanded Granular Sludge Bed (EGSB) reactor was carried out by continuous feeding of municipal wastewater as a measure of first problem. Continuous dissolved methane recovery test was carried out by Down-flow Hanging Sponge (DHS) unit as a measure of second problem. Furthermore, to discuss the perfect conditions to recover dissolved methane in effluent of anaerobic wastewater treatment, establish simulation models for the recovery of dissolved methane by DHS unit. Result of measure to first problem, EGSB reactor couldn”Ēt be applicable to municipal wastewater treatment. Recovery of dissolved methane by DHS unit could be suggestible as a measure of second problem
Please use "previous botton" to return the previous page