Randomly cleaned hollow flat sheet membrane component

Abstract

The invention discloses a randomly cleaned hollow flat sheet membrane component which comprises a component frame and a flat diaphragm component, wherein the component frame is a rigid component for fixing the flat diaphragm component and an aeration mechanism; the flat diaphragm component comprises flat diaphragms (10) which are arranged at intervals, and an upper plug and a lower plug which are integrally formed with the flat diaphragms; brushes (9) for cleaning the surfaces of the flat diaphragms is arranged on the flat diaphragms; two ends of the brushes are arranged on holding racks (12); the holding racks can be lifted up and down on the component frame. By adopting the randomly cleaned hollow flat sheet membrane component, adsorbate on the flat diaphragms can be randomly cleaned in time, the surfaces of the flat diaphragms can be kept clean, the filtering efficiency is improved, halt backwash is not needed, the times of backwash are reduced, the working time is prolonged, the working efficiency is improved, the problems that the flat diaphragm component is hard to clean, low in cleaning efficiency and the like are solved, the service life of a flat diaphragm reactor is effectively prolonged, the reliability of the flat diaphragm reactor is effectively improved, and the effluent flux is increased.

Description

technical field [0001] The invention relates to a water treatment device, in particular to various types of hollow flat membrane modules. Background technique [0002] As a new type of high-efficiency sewage treatment technology, the flat membrane bioreactor has become an indispensable treatment technology for domestic sewage, especially industrial wastewater and extreme environmental wastewater treatment. [0003] At present, the membrane bioreactor (MBR) is widely used in membrane bioreactors. MBR has the following main characteristics: high treatment efficiency, good effluent quality, compact equipment, small footprint, high strength, large water flux, long life, Low energy consumption per unit, easy to realize automatic control, simple operation and management, and low operation and maintenance costs. However, because the flat membrane uses external pressure and internal suction filtration during use, it is easy to cause organic colloids and sludge to form a layer of fi...

AI Technical Summary

Problems solved by technology

However, because the flat membrane uses external pressure and internal suction filtration during use, it is easy to cause organic colloids and sludge to form a layer of film on the surface of the flat membrane. The current method is basically to use aeration to drive water flow to wash For cleaning, the aeration rate needs to be controlled in the MBR process, otherwise it is easy to cause too high dissolved oxygen. This method provides a relatively small water flow rate, and the flat diaphragm is placed vertically, so the water flow can only wash the middle part and affect the surface. The cleaning effect of colloidal substances is very small. In addition, backwashing with compressed air and high-pressure filtered water is also difficult to remove substances such as colloidal substances, bacteria and sludge, especially if a polluted film layer has been formed, the removal effect is even worse. And it is necessary to stop filtering for backwashing, wasting time and purifying water; it will also cause a decrease in membrane flux, a decrease in processing capacity, and an increase in operating costs

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