Automatic defoaming agent feeding device

Abstract

The invention relates to an automatic defoaming agent adding device. According to the automatic defoaming agent dosing device disclosed by the invention, automatic preparation and dosing of a defoaming agent solution can be effectively realized, the automation degree of a system is improved, and the labor cost is saved to the greatest extent. According to the automatic defoaming agent adding device disclosed by the invention, the uniform spraying of the defoaming agent solution is realized by changing the adding mode of the defoaming agent solution, and the defoaming agent solution directly acts on the foam surface, so that the defoaming treatment effect is enhanced, meanwhile, the usage amount of the defoaming agent can be effectively saved, and the operation cost of an evaporation system is reduced.

Description

technical field [0001] The disclosure relates to the field of landfill leachate, in particular to an automatic dosing device for a defoamer. Background technique [0002] Landfill leachate is a kind of high-concentration organic wastewater produced by microbial decomposition after landfill. At present, the "biochemical treatment + membrane treatment" technology has become the mainstream treatment technology for landfill leachate treatment. The landfill leachate after "biochemical treatment + membrane treatment" is divided into the supernatant that meets the discharge standard and the membrane concentrate that is enriched with a large amount of refractory organic matter and salt. Disposal of membrane concentrates has long been a major challenge for landfill sites. [0003] With the development of technology, the immersion combustion evaporation technology based on the principle of direct contact heat transfer has completely solved the problem that the traditional mechanical...

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Problems solved by technology

[0004] 1. During the preparation of the defoamer solution, it is necessary to manually add the defoamer stock solution to the dispensing box and manually control the water in the dispensing stage. Situations where medicines are not available;

[0005] 2. Mix the prepared defoamer solution and membrane concentrate at the feed port of the submerged combustion evaporation system. At this time, the foam is not fully produced, which makes it difficult to control the dosage of the defoamer and is prone to waste of liquid medicine. , and the delivery process is difficult to control, and there is a problem of large consumption and high cost of defoaming agent;

[0006] 3. The traditional quantitative dosing method of defoaming agent has poor adaptability to the membrane concentrate. The amount of foam generated in the evaporation system is very different under the condition of different membrane concentrates. When the amount of foam generated by the system is large, the The defoamer solution added at the feed port cannot quickly act on the foam surface, and there is a lag in the removal effect of the foam, which affects the defoaming effect

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