Multi-grade filtering tank for coating wastewater

Abstract

The invention belongs to the technical field of coating and in particular relates to a multi-grade filtering tank for coating wastewater. The multi-grade filtering tank comprises a brick-made ladder platform, a filtering tank, a filtering net basket, a movable cart and a wastewater collection tank, wherein an anticorrosion layer is arranged on a tank surface of the filtering tank; the filtering tank comprises an inclined tank bottom; the ladder platform is provided with a blowdown pipe; the filtering net basket is arranged in the filtering tank; the wastewater collection tank is arranged on the movable cart; the wastewater collection tank is provided with a connection pipe with a switch; the movable cart is arranged at the outer side of the ladder platform. The multi-grade filtering tank for the coating wastewater is novel in structure; a dual filtering tank manner is adopted and the coating wastewater can be treated again; meanwhile, the filtering net basket is used for conveniently fishing dreg in the wastewater; the filtering net basket has high strength; an anti-collision structure is arranged and a vibration absorption effect is realized, so that the filtering tank can be prevented from being crashed; the filtering tank comprises the inclined tank bottom so that water is convenient to discharge; the wastewater collection tank is arranged and can realize centralized recycling of the wastewater.

Description

technical field [0001] The invention belongs to the technical field of paint, and in particular relates to a multi-stage filter pool for paint wastewater. Background technique [0002] As a kind of chemical product, the development of paint industry has been growing with the development of the construction industry and the national economy. In the early stage, the paint industry had low output and less wastewater, so the pollution was not very noticeable, and most of the paint wastewater was processed. Simple physical and chemical treatment, although the chemical oxygen demand (COD) does not meet the national standard, but the apparent color and turbidity barely pass. However, with the continuous expansion of the paint industry, the waste water produced by it is also increasing, and the pollution is becoming more and more serious. [0003] The paint wastewater treatment device in the prior art mainly includes a sewage lifting pump, a grease trap, a homogenizing tank, a stri...

AI Technical Summary

Problems solved by technology

[0002] As a kind of chemical products, coatings are a kind of chemical products. The development of its industry has been growing with the development of the construction industry and the national economy. In the early days, the output of the coatings industry was low and the amount of wastewater was small, so the pollution was not very noticeable, and most of the coating wastewater was processed. Simple physical and chemical treatment, although the chemical oxygen demand (COD) does not meet the national standard, but the apparent color and turbidity barely pass

However, with the continuous expansion of the paint industry, the waste water produced by it is also increasing, and the pollution is becoming more and more serious.

[0003] In the prior art, the paint wastewater treatment device mainly includes a sewage lifting pump, a grease trap, a homogenizing tank, a stripping tower and a filter tank. The structure of the filter tank is simple, and the sewage is not completely purified in the final stage.

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