摘要
乙烯碱渣中含有高浓度的COD、硫化物、盐类等污染物,常规生物处理方法对该类碱渣不能处理。采用生物强化处理技术对乙烯裂解过程产生的废碱液进行试验研究。结果表明:微生物可以在高硫化物负荷、高含盐等不利条件下正常进行有机污染物降解,对废碱液中的CODCr、硫化物的去除率分别达到97%和99%以上,并且探索出合理的工艺参数,为乙烯碱渣的有效生物处理提供了新思路。
Spent caustic from ethylene plant contains high concentration contaminants including COD,sulfides and salts. It is impossible to treat the spent caustic with conventional biological processes. This paper applies bioaugmentation technology to the spent caustic from ethylene cracking process. The results indicate that microorganisms can effectively degrade organic contaminants under adverse conditions such as high sulfide load and high salt content,and the removal rate of CODCr and sulfide is over 97% and 99% respectively. Reasonable process parameters are explored,thus offering a new idea on the effective biological treatment of spent caustic from ethylene plant.
出处
《石油化工安全环保技术》
CAS
2009年第2期43-46,56,共5页
Petrochemical Safety and Environmental Protection Technology
关键词
生物强化处理技术
乙烯碱渣
特效微生物
硫化物
Bioaugmentation technology
Spent caustic from ethylene plant
Specially effective microorganism
Sulfide
