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Electroplating wastewater reverse osmosis concentrated liquor treatment process and special device thereof

A technology for reverse osmosis concentrate and electroplating wastewater, which is used in metallurgical wastewater treatment, osmosis/dialysis water/sewage treatment, oxidized water/sewage treatment, etc. standards, etc.

Active Publication Date: 2017-02-22
SHANGHAI JINGYU ENVIRONMENT ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the heavy metal nickel in the electroplating wastewater reverse osmosis concentrated solution cannot meet the environmental protection standard, and to provide a treatment process for the electroplating wastewater reverse osmosis concentrated solution and its special device. The macromolecular organic matter in the concentrated solution is intercepted and separated to reduce COD and complexed nickel in the wastewater, and then the complexed nickel in the membrane product water is oxidized and complexed into a free state, and then the free nickel is removed by ion exchange resin , so that the effluent nickel reaches the standard

Method used

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  • Electroplating wastewater reverse osmosis concentrated liquor treatment process and special device thereof
  • Electroplating wastewater reverse osmosis concentrated liquor treatment process and special device thereof

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Embodiment

[0023] as attached figure 2 As shown, the special device for the electroplating wastewater reverse osmosis concentrate treatment process mainly includes a membrane separation unit 3, an oxidation reactor 5, and a resin tank 6;

[0024] The raw water tank 1 is connected to the membrane separation unit 3, and the water inlet pump 2 is installed on the connecting pipeline; the water production output end of the membrane separation unit 3 is connected to the oxidation reactor 5, and the concentrated liquid output end is connected to the adjustment tank 10; the oxidation reactor 5 The output end is connected to the resin tank 6; the regenerated liquid tank 9 is connected to the resin tank 6, and the dosing pump 8 is installed on the connecting pipeline; the clear liquid output end of the resin tank 6 is connected to the water production tank 7, and the regenerated waste water is connected to the eluent output end for adjustment Pool 10.

[0025] The membrane separation unit 1 is ...

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Abstract

The invention relates to an electroplating wastewater reverse osmosis concentrated liquor treatment process and a special device thereof. The treatment process includes the steps that macromolecule organic matter in electroplating wastewater reverse osmosis concentrated liquor is retained and separated in a membrane separation mode, COD and complexing form nickel in the wastewater are reduced, oxidation complex breaking is carried out on the complexing form nickel in water produced by a membrane to change the complexing form nickel into a free state, free-state nickel is removed through ion exchange resin, and nickel in output water reaches the standard.

Description

technical field [0001] The invention belongs to the technical field of electroplating industrial wastewater treatment, and in particular relates to a process for treating electroplating wastewater reverse osmosis concentrated solution and a special device thereof, so that the nickel in the electroplating wastewater can be discharged up to the standard. Background technique [0002] In the electroplating production process, in order to thoroughly clean the dirt (oil, rust, iron oxide scale, etc.) on the surface of the plated parts before plating, a large amount of cleaning water is required. Therefore, a large amount of electroplating wastewater will be produced in the electroplating production process, which often contains heavy metals such as copper, nickel, chromium, zinc, and cyanide. These pollutants generally have carcinogenic, teratogenic and mutagenic properties, which are extremely harmful to the human body, and the electroplating plant is widely dispersed. Compared ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/16C02F101/20
CPCC02F9/00C02F1/72C02F1/44C02F1/42C02F2103/16C02F2101/20
Inventor 夏俊方方小琴胡君杰张水水周耀水韩粒肖龙博陆魁
Owner SHANGHAI JINGYU ENVIRONMENT ENG