Using methane from soybean protein waste water as new energy for heating in residential buildings
Achieving comfortable and healthy indoor environment with minimized energy consumption becomes a challenging engineering and social issue. In cold climates, the main fuel for heating in residential buildings is the coal, and coal presents 70 percent of the total energy consumed in China. But using coal as fuel has some problems, such as low effect and polluting environment. So a non-polluting and renewable energy source needs to be developed. Methane is a clean energy source and it is a kind of flammable gas with higher calorific value;Methane can be produced from renewable raw materials such as organic wastes. Therefore, it is a potential clean energy substitute for fossil fuels in residential buildings heating. Methane production from diluted molasses by fermentative microbe flora was investigated in anaerobic baffled reactor (ABR) with an effective volume of 24 L. The substrate used in this study was soybean protein wastewater. The reactor was inoculated with excess sludge taken from a second settling tank in a local wastewater treatment process and started up at the organ ic loading rate (OLR) of 1.3kgCOD/m3·d with a hydraulic retention time (HRT) of 36h and a temperature of (35±1)℃. During the stable methane production phase, the average biogas yield of the ABR reached at 68 ～77 L/d with an average methane yield of 57.8 ～ 65.9855 L/d. In this paper, a technology to produce fuel--methane is developed, and the results of this study is valuable to solve the pollution problems related to burning fossil fuel and realize the recycle use of wastes. The use of technology in residential buildings is significant in energy and environment protection field.
Residential buildings heating ABR methane production soybean protein wastewater
ZHU Ge-fu LI Jian-zheng LV Bing-nan BAO LI-xin HAN Jian
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
国际会议
哈尔滨
英文
396-399
2007-01-15（万方平台首次上网日期，不代表论文的发表时间）