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Circuit board production wastewater treatment method and wastewater treatment system thereof

A wastewater treatment system and wastewater production technology, applied in multi-stage water treatment, water/sewage treatment, water/sewage treatment equipment, etc., can solve problems such as large differences in pH value, different COD content, poor biodegradability, etc. Achieve the effects of high regeneration efficiency, simple process and high use efficiency

Inactive Publication Date: 2019-02-01
ZHENJIANG HUAYIN PRINTED CIRCUIT BOARD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The wastewater produced in the production line of PCB printed circuit boards has complex components and various types. The wastewater discharged from the production lines of each workshop includes low-concentration wastewater, high-concentration wastewater, developing and stripping wastewater (ink wastewater), acid-base wastewater, etc. The content of COD in wastewater is different, and the pH value is also very different. The composition is complex and the biodegradability is poor. Especially the COD of ink wastewater is as high as tens of thousands. According to the characteristics of circuit board production and its pollutants, the research and development is suitable for circuit board production. Wastewater and waste liquid treatment technology and equipment, taking corresponding pollution control measures to solve the pollution of printed circuit boards, has important practical significance for protecting the water environment and saving water resources

Method used

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  • Circuit board production wastewater treatment method and wastewater treatment system thereof
  • Circuit board production wastewater treatment method and wastewater treatment system thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] A method for treating waste water from circuit board production, comprising the steps of:

[0049] (1) Reaction treatment, the waste water is transported to the inside of the reaction tank of the regulating tank, and the reactant is added into the reaction tank, and after 30 minutes of reaction, the reaction treatment is completed; the reactant is a heavy metal scavenger and a PAM polymer coagulant;

[0050] (2) Neutralization treatment, transport the wastewater treated by the reaction in step (1) to the neutralization tank in the adjustment tank, add an acid-base regulator in the neutralization tank, carry out acid-base neutralization, and neutralize until the pH value is After 7, the acid-base reconciliation is completed; the acid-base regulator is NaOH and polyaluminum chloride;

[0051] (3) Sedimentation treatment. The wastewater neutralized in step (2) is transported to the sedimentation tank for sedimentation treatment. The sedimentation time is 2H. After sediment...

Embodiment 2

[0056] A method for treating waste water from circuit board production, comprising the steps of:

[0057] (1) Reaction treatment, the waste water is transported to the inside of the reaction tank of the regulating tank, and the reactant is added into the reaction tank, and after 10 minutes of reaction, the reaction treatment is completed; the reactant is a heavy metal scavenger and a PAM polymer coagulant;

[0058] (2) Neutralization treatment, transport the wastewater treated by the reaction in step (1) to the neutralization tank in the adjustment tank, add an acid-base regulator in the neutralization tank, carry out acid-base neutralization, and neutralize until the pH value is After 7, the acid-base reconciliation is completed; the acid-base regulator is NaOH and polyaluminum chloride;

[0059] (3) Sedimentation treatment. The wastewater neutralized in step (2) is transported to the sedimentation tank for sedimentation treatment. The sedimentation time is 1H. After sediment...

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Abstract

The invention relates to a circuit board production wastewater treatment method, which comprises the following steps: reaction treatment; neutralization treatment; precipitation treatment; multi-mediafiltration; activated carbon filtration; and ion exchange purifying. The employed cation exchange resin has excellent kinetic characteristics when treating wastewater, and has high regeneration efficiency, low acid consumption, and large working exchange capacity. The wastewater treatment method adopted by the invention has the advantages of simple process, high use efficiency and large amount oftreated wastewater.

Description

technical field [0001] In particular, the present invention relates to wastewater treatment systems. Background technique [0002] The rapid development of the circuit board industry in our country has not only brought economic development to our country, but also brought serious impacts on domestic environmental protection. In particular, the water consumption and sewage discharge of the circuit board industry are large, and the sewage contains a large amount of pollutants. If it is discharged without treatment, it will not only pollute rivers and lakes, but also seriously pollute groundwater resources, making the environmental protection of the printed circuit board industry more serious. protrude. [0003] The wastewater produced in the production line of PCB printed circuit boards has complex components and various types. The wastewater discharged from the production lines of each workshop includes low-concentration wastewater, high-concentration wastewater, developing ...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F1/001C02F1/5245C02F1/56C02F9/00C02F2001/422C02F2001/425C02F2201/007C02F2301/08
Inventor 储诚法
Owner ZHENJIANG HUAYIN PRINTED CIRCUIT BOARD
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