Filter membrane equipment adopting self-coupling mounting

Abstract

The invention discloses filter membrane equipment adopting self-coupling mounting, and belongs to the technical field of environment-friendly sewage treatment. A membrane element is arranged in a frame, and the filter membrane equipment is immersed in sewage in an MBR aerobic biochemical pool and comprises a slide rail system, a water retaining system, a lower aeration system, an upper aeration system, a cleaning water pump, a cleaning agent box, a fan, a water producing pump and valves; water outside a filter membrane enters the inner side of the filter membrane through the surface of the filter membrane under negative pressure suction of the water producing pump and flows out through a water producing pipe, and pollutants are retained outside the filter membrane; the membrane element isconvenient to take out by arrangement of slide rails, and offline regenerative cleaning is facilitated; when operation is stopped for a long time or operation is not suitable for sewage treatment, water baffles on the periphery are inserted into grooves, clear water is injected into the frame, the membrane element is isolated from the sewage, so that the membrane element cannot be polluted by thesewage, and by design of an aeration cavity, the upper aeration system and breather pipes in the middle of a membrane bundle, the pollutants cannot be accumulated in the membrane element easily.

Description

technical field [0001] The invention relates to a filter membrane device, which belongs to the technical field of environmental protection sewage treatment, in particular to a self-coupled filter membrane device used in a membrane bioreactor. Background technique [0002] At present, membrane bioreactor (MBR) technology has been widely used in sewage treatment. Membrane bioreactor is a new type of wastewater treatment system that organically combines membrane separation technology and biological treatment technology. Replace the secondary settling tank at the end of traditional biological treatment technology with membrane equipment, maintain a high concentration of activated sludge in the bioreactor, increase the organic load of biological treatment, thereby reducing the footprint of sewage treatment facilities, and reduce the sludge load by maintaining low sludge load amount of residual sludge. The filter membrane immersed in the aerobic biochemical tank is mainly used to...

AI Technical Summary

Problems solved by technology

[0009] 1. Long-term stop operation will pollute the membrane unit:

[0010] In the north, especially in the three northeastern provinces, Inner Mongolia, Xinjiang and other regions, the temperature in winter is -20 degrees Celsius to -30 degrees Celsius for a long time. Even if the sewage treatment equipment takes insulation measures, it rarely reaches the normal operating temperature. Some sewage treatment plants often adopt Stop operation in winter, restart operation in late April or early May, or aerate as usual in winter, but because the water temperature is too low, microorganisms cannot grow and reproduce, the sludge in the MBR aerobic biochemical tank loses activity, and the water quality deteriorates. Turbidity becomes sticky, because the membrane unit is fixedly installed in the pool body, mucus and sludge adhere to the surface of the membrane unit, seriously pollute the surface of the membrane unit, and even cause the surface of some membrane units to calcify

[0011] 2. The membrane unit is inconvenient to take out, and it is inconvenient to clean by chemical regeneration:

[0012] When the membrane unit is seriously polluted, simple cleaning cannot restore the water production capacity of the membrane unit, and chemical regeneration cleaning is required. During chemical regeneration cleaning, the membrane unit needs to be taken out of the membrane unit frame of the MBR aerobic biochemical tank, and then put into the cleaning agent tank During cleaning, the membrane unit is fixedly installed on the frame, and the lower part of the frame is fixedly installed on the bottom of the tank. When taking the membrane unit, it is necessary to drain all the water in the tank, and then remove the membrane unit from the frame, which is time-consuming, laborious and labor-intensive. inconvenient

[0013] 3. The membrane unit cannot be isolated from the sewage:

[0014] When the operation of the northern winter is stopped and the sewage treatment system is commissioned, the water quality is extremely unstable and the sludge has a high viscosity, which can easily cause pollution and blockage of the membrane unit. Under the above conditions, it is not suitable for the membrane unit to contact with sewage. Unit is isolated from sewage

[0015] 4. The membrane bundles at both ends are easy to accumulate pollutants:

[0016] Due to the tight connection of the membrane bundles 18 of the two ends of the head 19, the aeration gas is not easy to pass through and reach the inside of the membrane bundle of the head. Difficult to wash off

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