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System and method for treatment and recovery of electronic electroplating wastewater

A technology for electroplating wastewater and electronics, applied in metallurgical wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can achieve obvious economic and social benefits, reduce wastewater pollution index and wastewater turbidity, and improve the treatment effect and its operating life.

Active Publication Date: 2012-09-19
DONGGUAN KEDA ENVIRONMENTAL PROTECTION ENG
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AI Technical Summary

Problems solved by technology

Considering the recycling efficiency and service life of membrane technology, the traditional recycling technology has not been well promoted and applied due to poor economic benefits of wastewater recycling. Moreover, some enterprises have expanded their production scale, requiring higher and higher wastewater reuse rates. Conventional treatment processes Difficult to meet requirements

Method used

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  • System and method for treatment and recovery of electronic electroplating wastewater
  • System and method for treatment and recovery of electronic electroplating wastewater
  • System and method for treatment and recovery of electronic electroplating wastewater

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Embodiment Construction

[0046] Please refer to figure 1 As shown, it shows the specific structure of the preferred embodiment of the present invention, including a wastewater reuse treatment unit 10, an RO concentrated water treatment unit 20, and a sludge treatment device 30. The electronic electroplating wastewater reuse treatment unit includes a grid 11, a regulating tank 12, a coagulation reaction device 13, a precipitation-membrane separation device 14, an ozone oxidation tank 15, an ozone digestion tank 16, a security filter 17 and an RO device 18. The RO concentrated water treatment unit 20 includes a hydrolysis acidification tank 21, a contact oxidation tank 22, and a sedimentation tank 23.

[0047] The main function of the grille 11 is to intercept large pieces of dirt in the wastewater so as not to cause damage to the pump or process pipeline of the subsequent processing unit.

[0048] In order to ensure the continuity and stability of the treatment structure, the regulating tank 12 regulates t...

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Abstract

The invention discloses a system and a method for treatment and recovery of electronic electroplating wastewater. The system comprises a wastewater recovery and treatment unit and an RO (reverse osmosis) concentrate treatment unit. A grille, an adjusting tank, a coagulation reaction device, a settlement and membrane separation device, an ozone oxidation tank, an ozone digestion tank, a cartridge filter and an RO device are connected to the wastewater recovery and treatment unit sequentially. A hydrolytic acidification tank, a contact oxidation tank and a settling tank are connected to the RO concentrate treatment unit. The electronic electroplating wastewater is treated through the grille, the adjusting tank, the coagulation reaction device, the settlement and membrane separation device, the ozone oxidation tank, the ozone digestion device, the cartridge filter and the RO device. RO fresh water is then reused on an electronic electroplating line. RO condensed water is effectively treated through the hydrolytic acidification tank and the contact oxidation tank and stably meets the primary specification GB8978-1996 of integrated wastewater discharge standard, and discharge requirements DB4426-2001 of discharge limits of water pollutants of Guangdong.

Description

Technical field [0001] The invention relates to an electronic electroplating wastewater treatment and reuse system and method, which are mainly used to treat heavy metal wastewater generated in the electronic electroplating industry and belong to the field of wastewater treatment. Background technique [0002] In today's increasingly scarce water resources, wastewater recycling is receiving more and more attention and favor from industrial and mining enterprises. The electronic electroplating industry is the basic industry of my country's electronic industry and plays an important role in the development of my country's economy, but its production process consumes a lot of water and pollutes the surrounding water bodies seriously. [0003] In order to promote cleaner production, realize energy saving, emission reduction, and save water resources, some areas have put forward the requirement that no less than 60% of discharged wastewater is reused for electronic electroplating enterp...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/16
Inventor 张伟锋戴锁堂周汉新
Owner DONGGUAN KEDA ENVIRONMENTAL PROTECTION ENG
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