Electronic industry recycled water treatment system and process

Abstract

The invention relates to an electronic industry recovered water treatment system and process; the electronic industry recovered water treatment system structurally comprises an RO concentrated water collection water tank, a cation resin tower, a decarburization tower, security filters, concentrated water RO devices and a filtering water tank which are connected in sequence; an inlet of the RO concentrated water collection water tank is connected with a primary RO concentrated water inlet pipe, and the concentrated water RO device is also connected with a wastewater pool through a pipeline. Thetreatment process comprises the steps: 1) feeding primary RO concentrated water into the RO concentrated water collection water tank; 2) dividing effluent into two paths to enter two cation resin towers for treatment; 3) converging effluent into a decarburization tower for treatment; 4) dividing effluent into two paths to enter two security filters, and adding a scale inhibitor and sodium hydroxide during pumping; 5) enabling effluent to enter two concentrated water RO devices for treatment; and 6) diving effluent into two paths to enter the filtering water tank and the wastewater pool. The electronic industry recovered water treatment system and process have the advantages that the requirements of energy conservation and emission reduction are met, the effluent meets the requirements ofraw water quality of a pure water system, the use amount of tap water in the electronic industry can be effectively reduced, and 50% of first-stage RO concentrated water can be recycled every day to be used for the pure water system.

Description

technical field [0001] The invention relates to a recycling water treatment system and process in the electronics industry, and belongs to the technical field of water treatment equipment. Background technique [0002] As an efficient and clean desalination technology, the reverse osmosis process is widely used in various industries, among which the electronic industry often uses the reverse osmosis process, but in the production process, there will be reverse osmosis concentration, which accounts for about 30% of the total influent. Water discharge, referred to as RO concentrated water. Pollutants such as salt and CODcr in RO concentrated water are concentrated by about 3-4 times, and the content of hardness, alkalinity, and organic matter in the concentrated water is relatively greatly increased. If this type of wastewater is directly discharged without treatment, it will cause great harm to the environment. Hazards have a major impact on people's production and life. In...

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Problems solved by technology

[0003] However, in the electronics industry, a large amount of concentrated water is discharged to waste water every day under the full operation of the first-level RO. If part of the first-level RO concentrated water can be recycled for the pure water system every day, the consumption of tap water can be greatly re

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