矿化垃圾对污泥厌氧消化产甲烷的影响  

Effect of mineralized waste on methane production from anaerobic digestion of sludge

作　　者：许泽宏[1] 周明罗[1] 程晓丹[1] 郭宗峰[1] 

机构地区：[1]宜宾学院环境保护科学与工程研究所,宜宾644007

出　　处：《环境工程学报》2017年第6期3780-3784,共5页Chinese Journal of Environmental Engineering

基　　金：宜宾学院青年基金项目(2012S02)

摘　　要：在序批式厌氧反应器中探究了矿化垃圾对污泥厌氧消化产甲烷的影响。实验结果表明,矿化垃圾能够提高甲烷的产量并且提高甲烷的体积分数。当矿化垃圾投加量由0增加到5 g·L^(-1)时,甲烷的产量也由168.9 m L·(g VSS)-1(挥发性悬浮固体)增加到218.6 m L·(g VSS)-1,体积分数由60%增加至70%。然而继续提高矿化垃圾的投加量至7 g·L^(-1)对污泥厌氧消化造成一定的抑制作用。矿化垃圾的存在能够提高污泥中溶解性化学需氧量(SCOD)的溶出,挥发性脂肪酸的积累进而为产甲烷菌提供了充足的消化底物,从而提高了甲烷的产量。In this study, the effect of mineralized waste on the production of methane from sludge anaerobic digestion in sequencing batch reactors was explored. Experimental results showed that mineralized waste can improve methane production and increase the volume fraction of methane. When mineralized waste dosages increased from 0 to 5 g·L-1, methane production increased from 168.9 mL·（g VSS）-1 （volatile suspended solids） to 218.6 mL·（g VSS）-1, and the volume fraction increased from 60 to 70%. However, further increasing the amount of mineralized waste to 7 g·L-1 inhibited the anaerobic digestion of sludge. The presence of mineralized waste can improve the soluble chemical oxygen demand （SCOD） in sludge, and the accumulation of volatile fatty acids, which provided sufficient digestion substrates for methane producing bacteria, thus increasing the yield of methane.

关 键 词：矿化垃圾 污泥消化 甲烷 挥发性脂肪酸 

分 类 号：X705[环境科学与工程—环境工程]