Method for grating trash-holding treatment

Abstract

The invention relates to the field of sewage treatment and specifically relates to a method for grating trash-holding treatment. The method comprises three steps of grating intercepting, cleaning anddirt removal, and deep self-cleaning of grating. An oxalic acid cleaning component is added into a grating scrubbing machine for removing a scale calcified layer; an inner cleaning component is addedfor removing a hair fiber layer; mounting sequence of all the cleaning components is optimized; cleaning angles of all the cleaning components are optimized; the cleaning components are matched with each other; front-end washing is capable of promoting the effect of rear-end washing; deep cleaning of a grating plate is realized; a transcendent function of a grating channel is realized by controlling the rotation of a gate plate of a trash-holding gate in a gate frame; an automatic controlled PLC control system is arranged for controlling the implementation of a trash-holding process; washing steps can be reasonably combined and adjusted according to the blocking condition of the grating plate, so that automatic cleaning of the system under the condition of energy conservation and emissionreduction can be realized and the trash-holding and cleaning efficiency can be increased; the PLC control system is connected with a touch screen and a central controller; operation is convenient.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a grid pollution-stopping treatment method. Background technique [0002] The screen-type internal inflow grille is a relatively new type of high-efficiency grille decontamination equipment that combines pollution interception and decontamination. It has a compact structure, small size, high slag interception efficiency and reliable operation. More and more sewage treatment plants are applying inflow screens to the pretreatment stage. In actual use, there are problems of difficult cleaning and short service life due to blockage caused by long-term use of the grille screen, which is manifested in the following aspects: the slag on the screen is not washed cleanly, and it is easy to block the water hole and reduce the flow rate; The slag is entangled on the stencil, which cannot be removed by normal flushing, causing blockage; the components in the sewage make the stencil easy to s...

AI Technical Summary

Problems solved by technology

In actual use, there are problems of difficult cleaning and short service life due to blockage caused by long-term use of the grille screen, which is manifested in the following aspects: the slag on the screen is not washed cleanly, and it is easy to block the water hole and reduce the flow rate; The slag is entangled on the screen, which cannot be removed by normal flushing, causing blockage; the components in the sewage make the screen easy to scale, resulting in blockage of the screen

[0003] In the prior art, the washing of the grille mesh mainly adopts the method of setting an external flushing device outside the frame of the grille decontamination machine. However, in actual use, the external flushing can only wash away the slag in the holes of the grille mesh. and due to the unreasonable installation position and flushing angle setting, the long-term flushing of the screen is not clean, not only for the surface slag, but also unable to remove the hair fiber layer inside the grid screen and the long-term scale calcification inside and outside the screen Floor

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