污水处理厂剩余污泥热处理发酵产氢的影响因素

›› 2009, Vol. 9 ›› Issue (1): 47-52.

污水处理厂剩余污泥热处理发酵产氢的影响因素

肖本益刘俊新

中国科学院生态环境研究中心

收稿日期:2008-08-04 修回日期:2008-09-25 出版日期:2009-02-20 发布日期:2009-02-20
通讯作者: 肖本益

Influential Factors of Fermentative Hydrogen Production from Thermally Treated Sewage Sludge

Junxin liu

Received:2008-08-04 Revised:2008-09-25 Online:2009-02-20 Published:2009-02-20

摘要/Abstract

摘要： 研究了影响污水处理厂剩余污泥热处理厌氧发酵产氢的4个因素：热处理时间、污泥浓度、起始pH和反应瓶顶隙率. 结果表明，热处理时间会影响污泥热处理的效果，导致发酵产氢的底物?污泥不同，从而影响热处理污泥的发酵产氢，121℃下热处理5 min为最佳处理时间. 中性起始pH值(6.5~8.0)下，热处理污泥的氢产率相对稳定，低于6.5不利于发酵产氢. 当反应瓶的顶隙率为51.61%时，热处理污泥的氢产率最大. 7.81 g/L为最佳污泥浓度，该浓度下污泥的氢产率最大，高于或低于该浓度时，污泥的发酵氢产率均下降. 在最佳条件下，热处理污泥的氢产率达19.57 mL/g VSS.

关键词: 剩余污泥, 热处理, 发酵产氢, 影响因素

Abstract: Four influential factors of fermentative hydrogen production from thermally treated sewage sludge were investigated, including thermal treatment time, sludge concentration, initial pH and headspace rate of reactor. The performance of thermally treated sludge was affected by the treatment time, which resulted in different substrates for fermentative hydrogen production. And 5 min at 121℃ was optimal for high hydrogen yield, but longer treatment time than that was negative. The highest hydrogen yield of thermally treated sludge occurred in the initial pH value range of 6.5~8.0. The value less than 6.5 was unfavorable. The headspace of reactor at 51.61% was optimal for hydrogen yield from thermally treated sludge by batch experiment. The highest hydrogen yield occurred at the sludge concentration of 7.81 g VSS/L. The optimal hydrogen yield of thermally treated sludge was 19.57 mL/g VSS.

Key words: Sewage sludge, Fermentative hydrogen production, factor, Thermal pretreatment

中图分类号:

X705
TK91

肖本益刘俊新. 污水处理厂剩余污泥热处理发酵产氢的影响因素[J]. , 2009, 9(1): 47-52.

Junxin liu. Influential Factors of Fermentative Hydrogen Production from Thermally Treated Sewage Sludge[J]. , 2009, 9(1): 47-52.

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