优势菌膜生物反应器处理洗车废水的研究

Study of the Treatment of Car-Washing Wastewater with Superior Strains-Membrane Bioreactor

采用优势菌强化膜生物反应器,对洗车废水进行生物处理,改善出水颜色和气味.常温下水力停留时间为4h,气水比为50,污泥浓度为3500mg/L时,化学需氧量的降低几乎全部由生物系统完成,以利于减少膜污染,延长膜寿命.将优势菌与膜生物反应器结合,能够充分发挥生物处理与膜分离工艺的优势,促进膜生物反应器的推广应用.

The chroma and smell were well wipedoff during the treatment of undegradative substance in carwashing wastewater by membrane bioreactor which had been strengthened by superior strains. When hydraulic retention time was 4 h, concentration of slude was 3 500 mg/L and the ratio of the air to wastewater was 50 at normal temperature, the decrease of chemical oxygen demand (COD) was almost fulfilled by the biosystem. It makes sense to antipollute and prolong the lifespan of membrane in the system.The result indicates that it is valuable for practice that the membrane bioreactor combined with superior strain can take the advantages of the biotreatment and membrane separately.