Film column cleaning control method, apparatus and system thereof, and sewage treatment apparatus

Abstract

The invention relates to the technical field of sewage treatment, and discloses a film column cleaning control method, an apparatus and a system thereof, and a sewage treatment apparatus. The cleaning effect of a film column is optimized, so the cleaning cost is saved, and the service life of the film column is prolonged. The cleaning control method comprises the following steps: acquiring the accumulative cleaning frequency of the film column, the accumulative cleaning time of the film column and the conductivity of inlet raw water; determining the fouling grade of the film column according to a corresponding relation between each of the accumulative cleaning frequency of the film column, the accumulative cleaning time of the film column and the conductivity of the inlet raw water and the fouling scale of the film column; and determining the cleaning executing time, the cleaning cycle frequency and the cleaning coefficient of current-time cleaning of the film column according to the corresponding relation between each of the accumulative cleaning frequency of the film column, the accumulative cleaning time of the film column and the conductivity of the inlet raw water and the fouling scale of the film column.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a membrane column cleaning control method, device, system and sewage treatment equipment. Background technique [0002] Physical and chemical treatment technology, light irradiation technology and membrane separation technology are called the three major water treatment technologies. Among them, the membrane separation technology is to separate, classify, purify and enrich the liquid of the two-component or multi-component mixture through the difference of the selective permeation effect of the membrane on each component in the mixture, and use the external energy or chemical potential difference as the driving force. set method. As an advanced technology of water treatment in the world today, reverse osmosis membrane separation technology has the advantages of cleanliness, high efficiency, and no pollution. , Radioactive wastewater treatment and other aspects have bee...

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Problems solved by technology

[0005] The inventors of the present application have found that the prior art does not consider the fouling level of the membrane column in the alarm conditions for chemical cleaning of the membrane column. If the membrane column is slightly fouled, using this method for cleaning for a fixed time is not conducive to saving cleaning energy. Consumption and cost, and if the fouling of the membrane column is serious, this method may lead to dirty cleaning of the membrane column, which will affect the service life of the membrane column and the sewage treatment effect of the equipment

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