生物炭促进市政污泥两相厌氧消化性能研究  

Study on two-phase anaerobic digestion performance of municipal sludge promoted by biochar addition

作　　者：潘宇 盛涛 Pan Yu;Sheng Tao(School of Environmental&Chemical Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)

机构地区：[1]黑龙江科技大学环境与化工学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2022年第6期765-770,共6页Journal of Heilongjiang University of Science And Technology

基　　金：国家自然科学基金项目(51908200)。

摘　　要：为了研究生物炭在促进厌氧消化中的作用效能,实现以废治废。以市政污泥为底物,建立产酸产甲烷两相厌氧消化系统,经高温分解、破碎筛分制备鸡粪生物炭,考察其对厌氧消化性能的影响,采用分子生物学技术分析各反应相的微生物群落结构演替。结果表明:在TS含量15%时,氢气和甲烷的最大累积产量分别为(1084.4±18.9)mL/L和(1570.6±34.5)mL/L。在最优生物炭浓度9 g/L时,氢气和甲烷的最大累积产量分别为(1638.6±11.7)mL/L和(2353.3±35.2)mL/L。但更高的生物炭浓度会导致氢气和甲烷产量的下降,主要原因为代谢产物为丙酸的Proteobacteria菌群相对丰度上升。添加鸡粪生物炭显著提高了两相厌氧消化产氢产甲烷性能,可有效处理市政污泥,并进行氢气和甲烷的同步回收。This paper aims to investigate the efficiency of biochar in promoting anaerobic digestion and to achieve waste treatment.The study involves establishing a two-phase anaerobic digestion system for acidogenic and methanogenic production by using municipal sludge as substrate;preparing chicken manure biochar by means of high-temperature decomposing,crushing and screening;investigating the impact of chicken manure biochar on anaerobic digestion performance;and analyzing the evolution of microbial community structure in each reaction phase using molecular biology technology.The results show that given TS content of 15%,the maximal cumulative output of hydrogen and methane is(1084.4±18.9)mL/L and(1570.6±34.5)mL/L,respectively;when the optimal biochar concentration is 9 g/L,the maximal cumulative output of hydrogen and methane is(1638.6±11.7)mL/L and(2353.3±35.2)mL/L respectively.But the higher biochar concentration could result in the decline of hydrogen and methane production,as due to more propionic acid accumulation from Proteobacteria.Adding chicken manure-derived biochar to two-phase anaerobic digestion could significantly improve the performance of hydrogen and methane,which can efficiently dispose municipal sludge and recover hydrogen and methane simultaneously.

关 键 词：两相厌氧消化 污泥 生物炭 氢气 甲烷 

分 类 号：X705[环境科学与工程—环境工程]