污染控制技术及原理
林云琴,王德汉,王钍汀,吴少全,林钊洪.造纸污泥与味精废液联合厌氧消化产甲烷性能研究[J].环境科学学报,2010,30(8):1627-1633
造纸污泥与味精废液联合厌氧消化产甲烷性能研究
- Methane production through anaerobic co-digestion of paper mill sludge and monosodium glutamate waste liquor
- 基金项目:广东省自然科学基金(No.06025856);广东省科技攻关项目(No.2008B030302044)
- 林云琴
- 华南农业大学资源环境学院环境科学与工程系, 广州 510642
- 王德汉
- 华南农业大学资源环境学院环境科学与工程系, 广州 510642
- 王钍汀
- 华南农业大学资源环境学院环境科学与工程系, 广州 510642
- 吴少全
- 华南农业大学资源环境学院环境科学与工程系, 广州 510642
- 林钊洪
- 华南农业大学资源环境学院环境科学与工程系, 广州 510642
- 摘要:采用造纸污泥与味精废液间歇式联合厌氧消化产沼气,通过设计总固体(TS)含量、碳氮比(C/N)和接种量等不同的工艺参数,研究了不同工艺条件下各反应器的产甲烷性能.试验结果表明:在中温(37±2)℃条件下,TS含量对系统累积产气量的影响较大,各反应器的累积产气量随TS含量的增加而增加;各反应器的单位质量挥发性固体(VS)累积产气率和TS、VS的去除率随TS含量增加而降低;在TS含量为10%的3组反应器中,造纸污泥:味精废液(w/w)=10:1的反应器产气效果优于造纸污泥:味精废液(w/w)=25:1和70:1两组处理,这与前者在消化过程中pH值下降最多、酸化能力最强有关;联合厌氧消化累积甲烷产量最大值为5482mL(TS含量为10%,造纸污泥:味精废液(w/w)=10:1),单位质量VS甲烷产率最大值为362mL·g-1(TS含量为3%,造纸污泥:味精废液(w/w)=11:1),可见这两种工业废物联合厌氧消化具有巨大的产甲烷潜力.
- Abstract:Methane production was investigated during anaerobic co-digestion of paper mill sludge(PS)and monosodium waste liquor(MWL).TS(total solid)content,C/N(the ratio of organic carbon to total nitrogen)and inoculum concentration were varied in batch reactors.The results showed that in methophilic(37±2)℃ anaerobic digestion,the CH4 yield increased as the TScontent increased.In each reactor,the accumulative methane production per gram of VS(volatile solid)content and the removal efficiency of TSand VScontent decreased as TSincreased.For the reactors with 10% TS,the CH4 yield in the reactor with a PS:MWLratio of 10:1 was higher than those with ratios of 25:1 and 70:1,which was expected due to the change of pH.The maximum CH4 yield(5482 mL)was attained in the reactor loaded with PSand MWLat a ratio of 10:1 by weight(TS=10%)and the maximum CH4 production efficiency(362 mL·g-1)was attained with a PS:MWLratio of 11:1 by weight and TS=3%.The results indicate that anaerobic co-digestion of two industrial wastes has great potential for methane production.
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