Scaling inhibitor adding control system, method and device as well as sewage treatment equipment

Abstract

The invention relates to the technical field of sewage treatment, and discloses a scaling inhibitor adding control system, a scaling inhibitor adding control method and a scaling inhibitor adding control device as well as sewage treatment equipment, for reasonably adding a scaling inhibitor so as to improve the working reliability of the sewage treatment equipment and decrease the sewage treatment cost. The scaling inhibitor adding control system comprises a speed governing pump for pumping the scaling inhibitor and a control device which is in signal connection with the speed governing pump, wherein the control device is used for outputting a first rate control signal so as to control the speed governing pump to be at the first setting pumping rate when the accumulated working time of a membrane column is not greater than a set time threshold, and is also used for obtaining a second pumping rate according to the corresponding relationship between the accumulated working time of the membrane column and the second pumping rate when the accumulated working time of the membrane column is greater than the set time threshold and outputting a second rate control signal to control the speed governing pump to be at the second pumping rate.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a scale inhibitor addition control system, method, device 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. [0003] For the treatment of landfill leachate, if it is necessary to meet the national first-level discharge standard, a two-stage osmosis system is generally provided. The sewage treatment equipment includes a primary osmosis system, a secon...

AI Technical Summary

Problems solved by technology

[0005] The inventors of the present application found that in the prior art, the antiscalant pump adds antiscalant at a fixed rate, which can easily cause too little addition of antiscalant to make the descaling effect poor, resulting in the failure of the equipment to work normally; or Adding too much antiscalant and wasting antiscalant, resulting in high cost of sewage treatment

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