Experimental Research of Several Methods of Sludge Pretreatment
The anaerobic digestion of sludge is a very effective way of sludge treatment.Since the anaerobic digestion usually takes a long time to complete,a major means of improving the efficiency of anaerobic digestion is promoting the decomposition of mud cells and enhance its biodegradable nature.Changing the characteristic of sludge will make the following sludge digestion more easily.In this article,experiments are based on acid,alkali and microwave pretreatments at different temperatures,retention times and pH values.The results show that the effect of acid pretreatmcnt is relatively uneffective, while that of alkali pretreatment is better,with little influence of time and temperature.The best parameters for the group experiments are found pH-11,T-20℃,t=8h.For microwave pretreatment,the bigger the power,and the longer the time,the better the effect.Considering feasibility and practical operation,66.7W/L is regarded the best choice.
sludge disposal sludge preprocess sludge anaerobic digestion
LV Chun ZHOU Yuanxiang CHEN Zhou SHI Jinjun ZHANG Chunlei
Department of Resources and Environmental Engineering,Hefei University of Technology,Hefei 230009,hi Department of Resources and Environmental Engineering,Hefei University of chnology,Hefei 230009,Chin Department of Resources and Environmental Engineering,Hefei University of Technology,Hefei 230009,Ch
国际会议
合肥
英文
78-82
2008-06-05（万方平台首次上网日期，不代表论文的发表时间）