炼油厂含油污泥发酵处理的影响因素研究

STUDY ON IMPACT FACTORS OF REFINERY OILY SLUDGE FERMENTATION

在自行设计的发酵装置中,采用木屑、稻草作为调理剂和膨胀剂,在强制通风量为0．1 m3／h下,对含油污泥进行了一次好氧发酵处理,考察了氮源和菌源对发酵效果的影响。结果表明,采用发酵液作为菌源,鸡粪作为氮源的发酵效果较好。发酵后堆料颜色由黑色变为黄褐色,臭味消失并且具有潮湿泥土的气味,性状由粘稠状变为松散的小颗粒状,油的降解率可达52．7％。菌株HJ-1对油中饱和烃降解效果好。

The aerobic fermentation experiment of oily sludge was performed in a self-designed fermentation plant using sawdust as amendment and haulm as plumping agent under the forced ventilation of 0. 1 m^3·h^-1. The investigation of the impact of nitrogen and microbe sources on the fermentation reveals that the oil- degradation rate is up to 52.7% after fermentation at the conditions of using chicken manure as nitrogen sources and HJ-1 strain as microbe. Simultaneity, the color of oily sludge has turned yellow-brown from black and the fetid odor has disappeared. The fermented sludge has become loose particles instead of original sticky materials. The composition analysis has also indicated that the oil saturates in the sludge are significantly reduced after fermentation.