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生化装置处理能力的实现与装置的运行方式有着密切关系。膜法推流式生化装置是炼油污水处理场常用的一大类生化处理设施,具有一定的代表性。新近发布的标准对外排污水的总氮提出较为严格的要求,在膜法推流式生化装置中,膜法A/O装置作为反硝化主要设施重新受到重视。但是现模式膜法A/O装置的反硝化效果不理想,可以延长反硝化段的停留时间并脱除回流水中的溶解氧,为反硝化创造有利条件。在膜法推流式生化装置以硝化方式运行的情况下,大回流必然影响到装置的处理效果,而减小回流量对装置的处理能力是有增强作用的,同时可以节省回流泵运行能耗。如果只作为过程处理设施,后续还有其他生化装置保证达标处理,采用多点进水方式能够最大程度地发挥膜法推流式生化装置的处理能力。当遇到高浓度污水冲击时,闷曝并不是有效的处理方法,尽快用低浓度污水置换装置内的高浓度污水,使装置内微生物尽快恢复活性后再逐步提高进水负荷,才是正确的处理方式。
The realization of biochemical device processing capacity and the operation mode of the device are closely related. Membrane push-flow biochemical devices are commonly used in refining sewage treatment plant a large class of biochemical treatment facilities, has a certain representation. The newly released standard sets the more stringent requirements on the total nitrogen content of the effluent water. In the membrane bioreactor, the membrane A / O unit re-attaches importance to denitrification facilities. However, the denitrification effect of the membrane-mode A / O device is not ideal, which can prolong the residence time of the denitrification section and remove the dissolved oxygen in the return water, thus creating favorable conditions for denitrification. In the case of the membrane-based push-flow biochemical device operating in a nitrification mode, the large reflux will inevitably affect the treatment effect of the device, and reducing the backflow will enhance the processing capability of the device and meanwhile save the energy consumption of the return pump . If only as a process treatment facilities, followed by other biochemical devices to ensure compliance treatment, the use of multi-point water way to maximize the membrane-type push-flow biochemical treatment capacity. When faced with high concentrations of sewage impact, borneol exposure is not an effective method of treatment as soon as possible with low concentrations of sewage replacement device within the high concentrations of sewage, the device within the microbial activity as soon as possible and then gradually increase the water load, it is correct Processing method.