作　　者： ; ;

机构地区： 沈阳师范大学

出　　处： 《辽宁工程技术大学学报（自然科学版）》 2011年第3期412-415,共4页

摘　　要： 针对城市污水处理厂剩余污泥采取中温(33℃)和高温(57℃)厌氧消化对比试验,进行污泥减量化与资源化研究。结果表明:在高温条件下进行污泥消化处理要比中温下进行污泥消化处理的效率高出一倍;污泥投配率增加时,挥发性脂肪酸的浓度急剧上升,pH值下降,当反应器趋于稳定时,挥发性脂肪酸的浓度开始下降,相应的pH值也缓慢回升,污泥上清液碱度在每个投配率下基本上是呈先下降后上升的趋势;在高温下pH、VFA、碱度随着污泥投配率的变化要小于中温条件下消化反应的变化情况。 In order to reduce and reuse the residual sludge from municipal wastewater treatment plant and overcome the technical limit for traditional anaerobic digestion, a contrast study was carried out between the mesophilic（33℃） and thermophilic（57℃） anaerobic digestion. The results show that the thermophilic digestive efficiency is one time higher than that of mesophilic. When the sludge dosage rate increases, the volatile fatty acid concentration rises sharply and pH drops. When the reaction becomes stable, the volatile fatty acid concentration begins to drop, the corresponding pH rises slowly. At each sludge dosage rate, the alkalinity drops at first and then increases with the continuing reaction. In different sludge dosages, the fluctuations of pH, VFA, alkalinity of thermophilic are less than those of mesophilic.

关 键 词： 污水处理厂 剩余污泥 厌氧消化 中温 高温 值 挥发性脂肪酸 碱度

领　　域： [环境科学与工程]