A LED industry chip production wastewater treatment system and treatment method

A technology for waste water production and treatment system, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, general water supply saving, etc., can solve the problems of serious pollution, high cost, frequent cleaning, etc.

Active Publication Date: 2018-07-13
南京英普斯环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the existing technology, in order to solve the shortcomings of serious pollution, frequent cleaning and high cost in the conventional treatment technology of LED industry chip production wastewater, the present invention provides a LED industry chip production wastewater treatment system and treatment method, It integrates advanced oxidation-ultrafiltration-reverse osmosis-EDI desalination of organic pollutants. Through the reduction of pollutants at the source and the precise regulation of the process, it overcomes the pollution problem on the membrane surface, effectively avoids membrane flux attenuation, and reduces the comprehensive treatment cost of reused water. , so that chip wastewater can be continuously and stably obtained high-purity water through treatment. The highest water quality can meet the requirements of Class I electronic grade ultra-pure water, and the fresh water recovery rate can reach up to 80%, providing enterprises with a high-efficiency Economical waste water resource treatment and cascade recycling technology

Method used

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  • A LED industry chip production wastewater treatment system and treatment method
  • A LED industry chip production wastewater treatment system and treatment method
  • A LED industry chip production wastewater treatment system and treatment method

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Experimental program
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Embodiment 1

[0095] This embodiment provides a figure 1 The system shown:

[0096] A waste water treatment system for chip production in the LED industry, the system includes an advanced oxidation pretreatment device 1 , an ultrafiltration treatment device 2 , a reverse osmosis device 3 and an EDI desalination device 6 connected in sequence.

[0097] Wherein, a security filter is arranged in front of the advanced oxidation pretreatment device 1, and the pore diameter of the filter element in the security filter is 8 μm.

[0098] The advanced oxidation pretreatment device 1 includes an advanced oxidation reactor and a ceramic membrane filter. Among them, the advanced oxidation reactor includes UV / O 3 A catalytic reactor and a three-phase separation chamber; the ceramic membrane treatment device includes a ceramic membrane filter and a backwashing device.

[0099] The UV / O 3 The power of the ultraviolet light source in the catalytic reactor is 45W.

[0100] The UV / O 3 The solid-phase c...

Embodiment 2

[0110] In addition to the pore size of the filter element in the security filter is 10μm, UV / O 3 The power of the ultraviolet light source in the catalytic reactor is 40W, the particle size of the photosensitive semiconductor catalyst is 20-30nm, the molecular weight cut-off of the ultrafiltration membrane in the ultrafiltration membrane module is 20,000Da fine suspended matter, the filtration accuracy is 10nm, and the material is polypropylene , the operating temperature of the ultrafiltration treatment device 2 is 15°C, the transmembrane pressure difference is 0.05MPa, the operation of the reverse osmosis device 3 is stable at 15°C, the working pressure is 1.5MPa, and the wavelength of the mercury lamp in the ultraviolet sterilizing device is 180nm. The structure of other devices and the connection mode of each device are the same as those in Embodiment 1.

Embodiment 3

[0112] In addition to the pore size of the filter element in the security filter is 5μm, UV / O 3 The power of the ultraviolet light source in the catalytic reactor is 65W, the particle size of the photosensitive semiconductor catalyst is 90-100nm, the molecular weight cut-off of the ultrafiltration membrane in the ultrafiltration membrane module is 30,000Da fine suspended matter, the filtration accuracy is 20nm, and the material is polypropylene , the operating temperature of the ultrafiltration treatment device 2 is 40°C, the transmembrane pressure difference is 0.15MPa, the operation of the reverse osmosis device 3 is stable at 45°C, and the working pressure is 3.0MPa, and the wavelength of the mercury lamp in the ultraviolet sterilization device is 190nm. The structure of other devices and the connection mode of each device are the same as those in Embodiment 1.

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Abstract

The invention provides a wastewater treatment system for chip production in the LED industry and a treatment method thereof. The system includes a sequentially connected advanced oxidation pretreatment device, an ultrafiltration treatment device, a reverse osmosis device and an EDI desalination device. Aiming at the characteristics of LED industry chip production wastewater with large water volume and many types of pollutants but relatively good water quality, the invention integrates advanced oxidation-ultrafiltration-reverse osmosis-EDI of organic pollutants to form low-cost deep removal of pollutants and Membrane graded desalination, and recovery of different water quality requirements for enterprise production (such as circulating water make-up water, pure water, high-purity water and ultra-pure water). Applying the technology of the present invention to process wastewater from chip production in the LED industry, the desalination rate reaches over 99.9%, the water recycling rate is higher than 80%, and the membrane life exceeds 3 years, which solves the problems of easy membrane pollution, low flux, and Frequent cleaning and high cost per ton of water.

Description

technical field [0001] The invention belongs to the field of wastewater treatment and reuse, and relates to a treatment system and a treatment method for chip production wastewater in the LED industry, in particular to a high-value utilization treatment system and treatment method for chip production wastewater in the LED industry. Background technique [0002] The LED industry is one of the strategic new industries that are prioritized for development in my country, and has developed rapidly in recent years. With the rapid development of the industry, the pollution problem in the production process of LED and its derivative products has not been taken seriously. With the continuous development of the industry, the pollution problem in LED production will inevitably become an important key to prevent the industry from continuing to develop rapidly. According to statistics, the national LED industry discharges more than 10 million m3 of waste water every year. 3 , although ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F9/08
CPCY02A20/131
Inventor 王汝南汪宏梅
Owner 南京英普斯环保科技有限公司
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