Method for processing electroplating wastewater

A treatment method, a technology of electroplating wastewater, applied in the field of water treatment, can solve the problem that the treatment effect is not greatly improved, and achieve the effect of improving the treatment effect and reducing the process flow

Inactive Publication Date: 2015-11-04
SUZHOU HUARI JINLING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The treatment method of the above-mentioned patent is classified according to different electroplating waters, and the electroplating treatment is carried out. This kind of treatment method is only classified according to the existing treatment process, and the treatment effect is not greatly improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1, a kind of processing method of electroplating waste water, processing step is as follows:

[0028] 1) Determining the content of main chemicals in the wastewater and classifying the wastewater;

[0029] 2) After classification, the wastewater is flocculated and sedimented;

[0030] 3) Carry out solid-liquid separation treatment for the wastewater after flocculation;

[0031] 4) After solid-liquid separation, the separation liquid is added to the waste water for neutralization treatment.

[0032] In step 1), the main substances in the wastewater are divided into: cyanide-containing wastewater and chromium-containing wastewater; the cyanide-containing wastewater and the chromium-containing wastewater are treated inseparably.

[0033] Polyaluminum chloride is added to cyanide-containing wastewater for reaction treatment.

[0034] Adding polyacrylamide to chromium-containing wastewater for reaction treatment.

[0035] After classification, the waste water is floccula...

Embodiment 2

[0039] A treatment method for electroplating wastewater, the treatment steps are as follows:

[0040] 1) Determining the content of main chemicals in the wastewater and classifying the wastewater;

[0041] 2) After classification, the wastewater is flocculated and sedimented;

[0042] 3) Carry out solid-liquid separation treatment for the wastewater after flocculation;

[0043] 4) After solid-liquid separation, the separation liquid is added to the waste water for neutralization treatment.

[0044] In step 1), the main substances in the wastewater are divided into: cyanide-containing wastewater and chromium-containing wastewater; the cyanide-containing wastewater and the chromium-containing wastewater are treated inseparably.

[0045] Polyaluminum chloride is added to cyanide-containing wastewater for reaction treatment. Adding polyacrylamide to chromium-containing wastewater for reaction treatment.

[0046] After classification, the waste water is flocculated and sediment...

Embodiment 3

[0049] A treatment method for electroplating wastewater, the treatment steps are as follows:

[0050] 1) Determining the content of main chemicals in the wastewater and classifying the wastewater;

[0051] 2) After classification, the wastewater is flocculated and sedimented;

[0052] 3) Carry out solid-liquid separation treatment for the wastewater after flocculation;

[0053] 4) After solid-liquid separation, the separation liquid is added to the waste water for neutralization treatment.

[0054] In step 1), the main substances in the wastewater are divided into: cyanide-containing wastewater and chromium-containing wastewater; the cyanide-containing wastewater and the chromium-containing wastewater are treated inseparably.

[0055] Polyaluminum chloride is added to cyanide-containing wastewater for reaction treatment. Adding polyacrylamide to chromium-containing wastewater for reaction treatment.

[0056] After classification, the waste water is flocculated and sediment...

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PUM

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Abstract

The invention relates to a method for processing electroplating wastewater, and especially relates to a method for processing electroplating wastewater, which belongs to the field of water treatment. The method comprises the following steps: measuring the content of main chemicals in waste water, classifying waste water; flocculating the waste water and depositing; performing solid-liquid separation on the flocculated waste water; adding a separating medium in the waste water after solid-liquid separation, and neutralizing to complete the process. The processing method employs same treatment process by aiming at different electroplating wastewater to reach the processing effect, technology flow is reduced, interchange of high temperature and low temperature is helpful for polymerization and decomposition of waste material in electroplating wastewater, so that the processing effect is increased.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a treatment method for electroplating wastewater, and belongs to the field of water treatment. Background technique [0002] 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 tank fluids and drains that "emit, drip, and leak"; equipment cooling water, and the cooling water has not been polluted except for the temperature rise during use. The water quality and quantity of electroplating wastewater are related to the process conditions of electroplating production, production load, operation management and water use methods and other factors. The water quality of electroplating wastewater is complex and its composition is difficult to control. It contains...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/16
Inventor 向延海
Owner SUZHOU HUARI JINLING MACHINERY
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