Recycling device for electroplating wastewater treatment

A technology for electroplating wastewater and recycling, which is applied in metallurgical wastewater treatment, water/sewage treatment, flotation water/sewage treatment, etc. It can solve the problems of incapable of simultaneous treatment of pollutants, ineffective use of water, and increased treatment costs. , to shorten the granulation time, improve the treatment efficiency, and improve the utilization rate.

Inactive Publication Date: 2021-06-04
钟志敏
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing treatment of electroplating wastewater containing chromium ions, ferrous sulfate is often used to convert and decompose it, resulting in the precipitation of chromium ions, but because electroplating wastewater containing chromium ions generally contains suspended solids and emulsified oil , surfactants and other pollutants, the way of ferrous sulfate conversion and precipitation cannot effectively treat these pollutants simultaneously, and it is necessary to increase the treatment process, reduce the treatment efficiency, and increase the treatment cost, so that the treated water cannot be effectively used , resulting in a waste of resources

Method used

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  • Recycling device for electroplating wastewater treatment
  • Recycling device for electroplating wastewater treatment
  • Recycling device for electroplating wastewater treatment

Examples

Experimental program
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Effect test

Embodiment 1

[0051] see Figure 1-8 , a recycling device for electroplating wastewater treatment, a recycling device for electroplating wastewater treatment, including a treatment pool 1, a reducing agent box 2 is fixedly installed at the rear end of the treatment pool 1, and the reducing agent box 2 is located on the left side of the treatment pool 1 , the upper end of the treatment pool 1 is fixedly installed with a neutralization exhaust box 3 located at the front side of the reducing agent box 2, and the upper end of the treatment pool 1 is provided with a scraper assembly 4 located at the lower side of the neutralization exhaust box 3, and the reducing agent box 2 stores There is a ferrous sulfate solution, and a chemical film 302 is stored in the neutralizing exhaust box 3, and a neutralizing chemical 303 is wrapped in the chemical film 302. The electroplating wastewater containing chromium ions in the treatment pool 1 is treated by the ferrous sulfate solution in the reducing agent ...

Embodiment 2

[0062] see Figure 1-8 , where the same or corresponding components as those in Embodiment 1 use the corresponding reference numerals as in Embodiment 1, and for the sake of simplicity, only the differences from Embodiment 1 will be described below. The difference between this embodiment 2 and embodiment 1 is: please refer to Figure 8 , a treatment method of a recycling device for electroplating wastewater treatment, comprising the steps of:

[0063] S1. Pass the ferrous sulfate solution in the reducing agent box 2 into the treatment pool 1 in advance;

[0064] S2. make the ferrous sulfate solution react with the hexavalent chromium ion in the treatment pool 1, and carry out redox to the hexavalent chromium ion;

[0065] S3. Then start the scraping and floating assembly 4 to make the treatment pool 1 rotate and run at the upper end of the treatment pool 1;

[0066] S4. Finally, the chemical film 302 in the neutralization exhaust box 3 is dropped on the scraper assembly 4, ...

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Abstract

The invention discloses a recycling device for electroplating wastewater treatment, and belongs to the field of wastewater treatment.The recycling device for electroplating wastewater treatment comprises a treatment pool, a reducing agent box is fixedly installed at the rear end of the treatment pool, and the reducing agent box is located on the left side of the treatment pool; therefore, the electroplating wastewater containing chromium ions in the treatment pool can be treated through a ferrous sulfate solution in the reducing agent box, so that the hexavalent chromium ions are subjected to oxidation reduction; then a neutralizing agent in the neutralizing exhaust box reacts with water, an alkaline solution and oxygen are generated, and the reduced chromium ions generate flocculent bodies that are adsorbed and floated by oxygen bubbles; therefore, the chromium ions in the electroplating wastewater are effectively treated, and the oxygen bubbles can effectively adsorb pollutants such as suspended solids, emulsified oil and a surfactant in the oxygen bubbles, so that the aim of synchronous treatment is fulfilled, the treatment efficiency is effectively improved, the treatment cost is reduced, the utilization rate of treated water is effectively improved, and the existing resources are saved.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a recycling device for electroplating waste water treatment. Background technique [0002] Electroplating is the process of plating a thin layer of other metals or alloys on the surface of certain metals using the principle of electrolysis. It is a process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts to prevent metal oxidation ( Such as rust), improve wear resistance, electrical conductivity, reflective properties, corrosion resistance (copper sulfate, etc.) and enhance the appearance. The outer layer of many coins is also electroplated. [0003] The sources of electroplating wastewater are generally: plating cleaning water; waste electroplating solution; other wastewater, including washing the floor of the workshop, scrubbing plate washing water, condensed water from ventilation equipment, and "running, All kinds of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/16
CPCC02F1/24C02F1/28C02F1/52C02F1/66C02F1/705C02F1/72C02F9/00C02F2103/16
Inventor 梁飞
Owner 钟志敏
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