Zero-discharge recycling treatment process for wastewater and waste liquid on surface chemical treatment process line

Abstract

The invention discloses an online wastewater recycling zero-emission treatment process for various water systems of a surface chemical equipment line. The process mainly comprises an acid-base wastewater zero-discharge treatment process, a heavy metal wastewater zero-discharge treatment process, a regenerated liquid treatment process and a high-concentration wastewater zero-discharge treatment process. The process is based on the types and contents of harmful substances in waste water and waste liquid generated in each process stage. The process comprises the following steps: treating waste water and waste liquid generated in each stage of a manufacturing process by adopting different treatment processes, treating acidic or alkaline waste water and waste liquid in the manufacturing processby utilizing an acid-base waste water zero-discharge treatment process to realize online recycling of the acidic or alkaline waste water and waste liquid, and treating by utilizing a high-concentration waste water zero-discharge treatment process to realize zero emission; the heavy metal wastewater zero-discharge treatment process is used for treating wastewater and waste liquid containing heavymetal components to realize on-line recycling of the wastewater and the waste liquid, and the discharge amount of the wastewater and the waste liquid is greatly reduced after the wastewater and the waste liquid are treated by the regenerated liquid treatment process.

Description

technical field [0001] The invention relates to a recycling treatment process for waste water and waste liquid, in particular to a zero-discharge recycling treatment process for waste water and waste liquid on a surface chemical treatment process line, and belongs to the technical field of on-line recycling treatment process for industrial waste water. Background technique [0002] The surface chemical treatment process line includes a treatment tank for processing the process steps and a water washing tank for cleaning the processed parts. The above-mentioned treatment tanks generally contain various treatment liquids for surface chemical treatment of the parts , each step of the treatment tank can be one or multiple independently; the main function of the above-mentioned water washing tank is to clean the treatment liquid on the surface of the workpiece after being treated by the treatment tank through the water discharge of the water washing device installed in it, and aft...

AI Technical Summary

Problems solved by technology

This treatment process cannot achieve zero discharge or needs to be used in conjunction with other equipment that requires water reuse in the production site. In addition, it cannot realize real-time online classification and treatment of waste water and liquid waste containing different pollutants.

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