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- W1528834484 abstract "Anaerobic wastewater treatment is a well-established and proven technology for the treatment of various categories of industrial wastewaters. This technology has numerous advantages, such as low energy requirement, energy recovery as methane gas (CH4), low costs of aeration and sludge handling, over aerobic counterparts. Most anaerobic wastewater treatments have been conducted within mesophilic (30°C 40°C) or thermophilic (45°C 60°C) temperature ranges. This is attributed to the fact that most of the biological reactions responsible for anaerobic biodegradation of organic matters proceed slower under psychrophilic (<20°C) condition than under mesophilic and thermophilic conditions. However, municipal wastewater is generally discharged at low ambient temperature under temperate climatic conditions. Furthermore, municipal wastewaters belong to the category of low-strength wastewater that has a chemical oxygen demand (COD) concentration of about 1.0 g/L or lower. Therefore, a significant input of energy is required to heat a reactor to the treatment temperature. If anaerobic wastewater treatment without heating the reactor can be applied to low-strength wastewater, the cost of anaerobic wastewater treatment can be reduced, thereby making this technology an attractive option for the treatment of a variety of wastewaters. In this study, the technical feasibility of using an upflow anaerobic sludge blanket (UASB) reactor to treat low-strength wastewater at ambient temperature was investigated. Especially, the effects of temperature and hydraulic retention time (HRT) on the performance of a UASB reactor were investigated. Based on the results obtained, municipal wastewater was treated in a UASB reactor at ambient temperature. Furthermore, degasification with degassing membrane (DM) was applied to the UASB reactor to improve CH4 recovery efficiency by collecting dissolved CH4 (DCH4) from the reactor effluent. The degasification technology was compared with the other technologies for D-CH4 collection." @default.
- W1528834484 created "2016-06-24" @default.
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- W1528834484 date "2013-09-25" @default.
- W1528834484 modified "2023-09-27" @default.
- W1528834484 title "Anaerobic treatment of low-strength wastewaters at ambient temperature in upflow anaerobic sludge blanket reactors" @default.
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