Filter backwashing control method

Abstract

The invention discloses a filter backwashing control method, and belongs to the field of filter backwashing. The method comprises the following steps: S1, collecting a first state parameter of a filter tank, and optimizing the first state parameter to obtain an optimized filter period; S2, acquiring a second state parameter of the filter tank and a corresponding backwashing parameter group, and optimizing the second state parameter and the backwashing parameter group to obtain an optimized backwashing parameter group; and S3, carrying out backwashing control on the filter tank according to the optimized filter period and backwashing parameter group. The method has the beneficial effects that: the filtering period and backwashing parameters of the filter tank are optimized, so that the backwashing process of the filter tank is optimized and controlled, the water yield is further improved, the energy consumption and the production cost are reduced, and the refined control of the filtering link is realized.

Description

technical field [0001] The invention relates to the field of filter backwash control, in particular to a filter backwash control method. Background technique [0002] In the water treatment plant, the filter is one of the important links to further remove impurities in the water. When the filter works for a period of time, the trapped pollutants will penetrate the filter layer, causing the water quality to deteriorate sharply and the filtration resistance of the filter layer to increase. Large enough to exceed the maximum allowable resistance, resulting in the filter not working properly. In order to restore the normal operation of the filter, the filter needs to be backwashed, and the filter layer is flushed with reverse water flow (from top to bottom), so that the filter layer is regenerated, and the filter starts to work again. Different types of filters have different backwash intensity and backwash time, and the backwash intensity for ordinary fast filters is 10-15L / (s...

AI Technical Summary

Problems solved by technology

[0003] At present, the backwashing process of the filter needs to meet the following conditions: the filtration time exceeds the set value, or the head loss is greater than the set value, or the upper computer is forced to flush, and these set values, and the corresponding backwashing parameters are usually They are all determined according to manual experience, and the accuracy is poor; at the same time, the backwashing parameters in the backwashing process are also set according to experience, and the parameter setting is unreasonable. When the washing intensity is too high and the backwashing time is too long, it will cause unnecessary energy waste and cost loss; when the flushing intensity is too high and the backflushing time is too short, it is impossible to guarantee whether the factory water quality can reach the standard stably. Therefore, it is urgent to design a filter backwash control method to meet the above problems. practical needs

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