期刊文献+

痕量金属对农贸市场废弃物厌氧消化的影响 被引量:8

Effect of Trace Metals on Anaerobic Digestion of Solid Waste from Farming Trade Market
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摘要 在完全混合工艺条件下对农贸市场的固体废弃物进行厌氧消化,分析消化过程中pH值、VFA(挥发性脂肪酸)、COD(化学需氧量)和产气量等随时间的变化情况,研究不同投加量的痕量金属Fe、Co、Ni对农贸市场固体废弃物厌氧消化的促进作用。结果表明,在投加痕量金属离子以后,农贸市场固体废弃物厌氧消化的气体产量提高了11.2%~25.4%,甲烷含量从52%提高到57.5%,COD的去除率从33.8%提高到44.1%。其中,Fe、Co、Ni的最佳投加量为1 mg.L-1.d-1、0.1 mg.L-1.d-1、0.2 mg.L-1.d-1。这对运用到城市有机垃圾处理的实践上有着重要的意义。 The changes of the pH .value , the VFA (volatile fatty acid), the COD (Chemical Oxygen Demand) and the biogas yield are analyzed under the complete mix anaerobic digestion conditions. The different supplement dosage of trace metals Fe , Co , Ni on the improvement of the anaerobic digestion of Solid Waste from farming trade market is studied. A supplement dosage of trace metals to the anaerobic system can increase the biogas yield by 11.2% - 25.4%, increase the methane content from 52% to 57.5% and improve the COD removal rate from 33.8% to 44.6%. The optimum supplement dosage of Fe, Co, Ni in the reactor is 1.0 mg·L^-1·d^-1 ; 0. 1 mg ·L^-1·d^-1 ; 0. 2 mg·L^-1·d^-1, respectively. It is significative for the practise of the disposal on city organic waste.
出处 《重庆大学学报(自然科学版)》 EI CAS CSCD 北大核心 2007年第5期23-26,共4页 Journal of Chongqing University
基金 国家自然科学基金资助项目(50478066)
关键词 农贸市场固体废弃物 痕量金属 完全混合厌氧消化 solid waste of fanning trade market trace metals complete mix anaerobic digestion
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参考文献10

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