摘要
对污泥加热预处理给中温厌氧混合消化和污泥单独消化带来的影响进行了研究。研究结果表明,污泥加热预处理有利于提高混合消化对COD的去除率,尤其是SCOD的去除率由77%增长到93%,但不利于TS和VS的去除;而对污泥单独消化,预处理则不利于有机物的去除。采用加热预处理后的污泥进样,混合消化和污泥单独消化的甲烷产气量均有所提高。
The effects of waste activated sludge （WAS） pretreatment by heating on mesophilic anaerobic co-digestion of WAS and kitchen garbage, and digestion of WAS alone were studied. The pretreatment increased the removal rate of COD, especially removal rate of SCOD which increased from 77% to 93% , for co-digestion, but the removal rates of TS and VS decreased. For mesophilic anaerobic digestion of WAS alone, WAS pretreat- ment was a disadvantage for organic substance removal. However, WAS pretreatment increased methane yield for both digestions.
出处
《环境工程学报》
CAS
CSCD
北大核心
2008年第9期1243-1246,共4页
Chinese Journal of Environmental Engineering
关键词
污泥
厨余垃圾
中温厌氧消化
加热预处理
waste activated sludge
kitchen garbage
mesophilic anaerobic digestion
pretreatment by heating
