Modularized pulse aeration apparatus, standard aeration system module and filtration system

Abstract

The invention provides a modularized pulse aeration apparatus. After a small flow of airflow is continuously input, and a pulse aeration effect generating large bubbles by instantly uniformly releasing a large flow of airflow can be realized, so the aeration cleaning effect of a membrane is improved, and the energy consumption of equipment is reduced. The apparatus can avoid aeration failure caused by obstruction. The invention also provides a standard aeration system module. The standard aeration system module comprises one or more modularized pulse aeration apparatuses, and the release of airflows with different frequencies and different flows by any positions and number of the modularized pulse aeration apparatuses can be realized in the standard aeration system module according to practical use demands to reach different aeration intensities in order to improve the aeration cleaning effect of the membrane and reduce the energy consumption of the equipment. The invention further provides a filtration system. The filtration system can be an external shell membrane filtration system or a submerged membrane filtration system, and comprises one or more standard aeration system modules.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a modular pulse aeration device, a standard aeration system module and a filter system. Background technique [0002] Water resources are one of the most critical resources for human survival. Nowadays, the ecological environment is destroyed and water pollution is becoming more and more serious. In order to achieve sustainable development, water treatment technology is particularly important. Membrane separation technology has been widely used in the fields of water purification or liquid filtration and separation. In the submerged membrane system, due to the concentration polarization phenomenon between the inside and outside of the membrane, it is often necessary to use aeration, that is, to be treated Air is inserted into the liquid to form air bubbles to generate disturbance and reduce the concentrated suspended matter attached to the outer surface of the membrane to achieve ...

AI Technical Summary

Problems solved by technology

However, in practical applications, when the content of suspended solids in the liquid is too high, the cavities or pipes that are not connected in the structure are prone to settlement and blockage; when the aeration of the system is stopped, the gas source input port is prone to backflow and blockage, resulting The blockage of the gas channel will make the aeration ineffective; on the other hand, at the same position, each gas outlet should be aerated evenly to produce a uniform flushing effect on the membrane; at the same time, due to the influence of membrane filtration in the submerged membrane system, the liquid in the membrane pool will produce Concentration differentiation, the closer to the center of each submerged membrane stack, the more concentrated the membranes, the more obvious this phenomenon, the more serious the membrane pollution here, and higher aeration intensity is required to improve membrane cleaning effect, so it is necessary that the aeration devices configured in the same submerged membrane stack can provide different intensities of aeration at different positions, that is, for this intermittent aeration working mode, the aeration devices at different positions are required to provide Aeration at different frequencies and flows

However, the prior art and the gas distributor for filter membrane disclosed by Chinese patent application number CN 201080050537.9 cannot meet the above requirements.

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