石化企业的循环冷却水系统中经常会发生介质泄漏而导致水质恶化，其中以含油介质的泄漏最为普遍。从含油污泥中筛选出的四种嗜油菌，经初步驯化，基本适应了循环水系统的生长环境。在模拟的循环水漏油环境下，生长良好，处理效果较理想。

In industrial circulating water systems of the petrochemical enterprises,oil-containing medium leaking often occurs,which can worsen the water quality.Four kinds of petroleum degrading strains are screened from oil-containing sludge.By the process of domestication,they adapted themselves radically to the growth environment of circulating water system.In the simulated oil-leaking environment,the strains grow well and have comparative good degradation results.