摘要
针对炼油厂高浓度废碱液污染大、难处理的问题,从污泥中经过驯化分离,筛选出5株用于废碱液降解的优势菌,经过对5株菌株降解化学耗氧量(COD)的比较,优势菌对废碱液的降解效果明显。对碱液生物处理中优势菌的降解条件进行初步研究的结果表明,碱液生物处理过程中添加营养物质可明显提高COD去除率,营养物质适宜的添加量为:玉米粉质量分数为0.8%,MgSO_4·7H_2O质量分数为0.8%,玉米浆质量分数为1.0%。在接种量为10%、温度35℃、pH值为7的适宜条件下,菌株TK07-5对碱液进行生物处理72 h后,碱液COD去除率可达81.2%。
In view of solving the pollution problem of waste alkali liquor in oil refineries, 5 optimized strains were screened and domesticated from refinery sludge for the degradation of alkaline wastewater. It can be seen that the degradation performance of these 5 strains was significant by comparing the chemical oxygen demand（COD）value. The degradation process conditions of the optimized strains in hiotreating alkaline wastewater were also discussed. Test results showed that under the optimum treating conditions of a pH value of 7,a treating temperature of 35℃ and the added amount of nutrients were 0.8% of corn meal,0.8% of MgSO4 · 7H2O and 1.0% of corn steep liquor,the COD removal rate of alkaline wastewater reached 81.2% by using TK07-5 strain for 72 h.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2009年第7期64-68,共5页
Petroleum Processing and Petrochemicals
关键词
生物处理
优势菌
废碱液
biological treatment
optimized strains
waste alkali liquor
