驯化菌种降解油制气废水的影响因素研究

STUDY ON INFLUENCE FACTORS OF ACCLIMATED STRAINS BIODEGRADING MGO-WASTEWATER

利用筛选的3种微生物，在初步研究其对某些化合物降解能力的基础上，考察其降解油制气废水过程中一般因素如温度、pH值、供氧条件、废水浓度以及营养因素如磷源、碳源对微生物降解能力的影响。研究表明，各菌种可在自然环境条件范围内，保持对废水CODcr降解效果的稳定性。葡萄糖、乙醇的加入，可将各菌种对CODcr的去除率分别提高16．9％～26．5％、17．6％～25．6％。

On the basis of investigating the ability of biodegrading some compounds,three acclimated strains were used to treat wastewater which produced in the process of manufacturing gas with oil(MGO),and the condition's influences on acclimated bacteria biodegrading this wastewater were investigated,the influencing factors include temperature,pH,oxygen supply,concentration of pollutant and co-metabolic substance as phosphorous source,carbon source.The results indicate that:these three bacteria could keep the COD_(Cr) removal rate under scale of natural condition;by adding glucose and ethanol,the COD_(Cr) removal rates could be improved by 16.9%～26.5% and 17.6%～25.6%,respectively.