Method for reutilizing purified water of purified water production
A technology for purifying water and circuit boards, applied in chemical instruments and methods, oxidized water/sewage treatment, multi-stage water treatment, etc., can solve problems such as high production and operation costs, aggravating the comprehensive difficulty of national municipal processing and treatment, and reduce emissions , the effect of reducing the cost of use
Inactive Publication Date: 2017-07-25
厦门利德宝电子科技股份有限公司
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Problems solved by technology
[0007] Based on this, it is necessary to address the technical issues that the comprehensive treatment of production sewage to reach the third-level discharge standard will increase the comprehensive difficulty of national municipal processing and treatment, and the production enterprises need to introduce national tap water as production water in daily production, and the production and operation costs are high. A method for secondary utilization of purified water produced by circuit boards is provided
Method used
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Embodiment 1
[0065] The industrial sewage as shown in Table 2 is treated by the method for secondary utilization of purified water produced by the above-mentioned circuit board of the present invention through the comprehensive treatment of the sewage to be treated to reach the third-level discharge standard. As shown in Table 4.
[0066] Table 2 Pollutant content of industrial sewage
[0067]
Embodiment 2
[0069] The industrial sewage as shown in Table 3 has been comprehensively treated to reach the third-level discharge standard to be treated by the method for secondary utilization of purified water produced by the above-mentioned circuit board of the present invention. As shown in Table 4.
[0070] Table 3 Pollutant content of industrial sewage
[0071]
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Abstract
The invention provides a method for reutilizing purified water of purified water production. The method comprises the following steps: roughly filtering; finely filtering by filtering the roughly filtered sewage with ion exchange resin, wherein the ion exchange resin includes anion exchange resin and cation exchange resin at mass ratio of (5:1)-(2:1); bleaching and sterilizing; regulating PH, thereby acquiring the reutilized water. The to-be-treated sewage reaches national emission standard and can be directly emitted but cannot be directly used as the production water for a circuit board manufacturing enterprise. According to the invention, the to-be-treated sewage is further treated according to the steps of roughly filtering, finely filtering, bleaching and sterilizing and regulating PH. After the wastewater is treated according to the method for reutilizing purified water of purified water production, the waste is turned into wealth, the treated wastewater can reach the standard for production water of the circuit board manufacturing enterprise, the emission of the sewage is reduced and the use cost of the production water is also reduced.
Description
technical field [0001] The invention relates to the technical field of industrial sewage treatment, in particular to a method for secondary utilization of purified water produced by circuit boards. Background technique [0002] According to the "Regulations on Environmental Protection Management of Construction Projects": "Industrial construction projects should adopt clean production processes with less energy consumption and less pollutant generation, rationally use natural resources, and prevent environmental pollution and ecological damage." The provisions of this regulation are sufficient Embodies the core idea of cleaner production requirements. [0003] The Chinese government encourages and promotes cleaner production, and on June 29, 2002, the 28th meeting of the Ninth National People's Congress passed the "Law of the People's Republic of China on Promotion of Cleaner Production", which stipulates new construction, reconstruction and technical transformation Proje...
Claims
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IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/001C02F1/42C02F1/66C02F1/76C02F2001/427C02F2103/34C02F2301/08
Inventor 曹克铎江东红吴志峰
Owner 厦门利德宝电子科技股份有限公司