生物强化膜生物反应器处理洗车废水

Bioaugmentation Disposal of Car-Washing Wastewater with Membrane Bioreactor

洗车废水用水量大,而且回用水质要求较高,采用膜生物反应器(MBR)处理以保证回用水的水质,同时可缓解水资源短缺的问题.利用生物强化技术针对性强、应用灵活和效率高等特点,将高效菌生物强化技术与MBR结合处理洗车废水.在相同运行条件下运行两个MBR,其中一个MBR中投加高效菌,并对两者的处理效果进行比较.试验结果表明,用高效菌强化的MBR出水水质良好,出水的色度、化学需氧量(COD)、氨氮(NH3-N)和阴离子表面活性剂(LAS)等均优于普通污泥-MBR出水.

The amount of car-washing wastewater is large and the quality requirement of recycled water is high. Good effluent can be obtained by adopting membrane bioreactor (MBR) and the shortage of water resources can be resolved at the same time. Bioaugmentation technology has the characteristics of strong pertinence, high (agility,) high efficiency, and so on. According to the characteristics, a study on the treatment of car-washing wastewater with MBR strengthened by superior microorganisms was carried out. The comparison between (superior) microorganisms MBR and simple submerged MBR was carried out under similar operational conditions. The experimental results indicate that the chrominance, chemical oxygen demand (COD), ammonia (concentration)(NH_3-N) and linear alkylbenzene sodium-sulfonate (LAS)of effluent of the MBR strengthened by superior (microorganisms) are better than those of simple submerged MBR. The simple submerged MBR has a (better ) (carwashing) effluent quality after it is strengthened by superior microorganisms.