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Nickel recycling system

A recycling and filter technology, which is applied in photographic technology, multi-stage water treatment, water/sludge/sewage treatment, etc., can solve the problems of many operators, waste water not up to standard, complicated procedures, etc., achieve low energy consumption, reduce Usage amount, to achieve the effect of continuous adsorption

Inactive Publication Date: 2016-10-26
CHENGDU HONGHUA ENVIRONMENTAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires a large number of operators, the process is complicated, and it is easy to make mistakes, resulting in the discharge of wastewater that does not meet the standard.
Moreover, the flocculated solid product of this method is a dangerous substance containing nickel, which is easy to cause secondary pollution.

Method used

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  • Nickel recycling system
  • Nickel recycling system

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Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 Shown, a kind of nickel circulation recovery system, it comprises waste liquid tank 1, filter A2, clear water tank 5, acid tank 6, lye tank 13, nickel liquid storage tank 9, electrolysis device 10 and nickel extraction device 11, The liquid outlet of the waste liquid tank 1 is connected to the liquid inlet of the filter A2, and the outlet of the filter A2 is connected to the first adsorption tower 3, and the ion exchange tower 3 is installed in the first adsorption tower 3. Resin, ion exchange resin has realized the adsorption of nickel ions with low energy consumption, no phase change, and no pollution through membrane separation technology. The waste liquid outlet of the first adsorption tower 3 is connected with a filter B7, and the liquid outlet of the filter B7 Connect with waste water treatment plant 8, described clear water tank 5, lye tank 13 and acid tank 6 are all connected with the first adsorption tower 3, and the running water in the clear ...

Embodiment 2

[0019] The structure of this embodiment is basically the same as that of Embodiment 1, the only difference is that in this embodiment, if figure 2 As shown, the outlet of the filter A2 is also connected with the second adsorption tower 4, and the waste liquid outlet of the second adsorption tower 4 is connected with the filter B7, and the second adsorption tower 4 is connected with the clear water respectively. Tank 5, lye tank 13 and acid tank 6 are connected, when the wastewater treatment capacity is not large, the first adsorption tower 3 and the second adsorption tower 4 do not work at the same time, when the wastewater treatment capacity is large, the first adsorption tower 3 and the second adsorption tower 4 do not work simultaneously. The second adsorption tower 4 works at intervals, that is, the second adsorption tower 4 works later than the first adsorption tower 3, so as to ensure that when the ion exchange resin of one of the adsorption towers reaches saturation, wh...

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Abstract

The invention discloses a nickel recycling system, which comprises a waste liquid tank, a filter A, a clear water tank, an acid liquor tank, an alkali liquor tank, a nickel liquid storage tank, an electrolysis device and a nickel extraction device. A liquid outlet of the waste liquid tank is connected to a liquid inlet of the filter A, an outlet of which is connected to a first adsorption tower. A waste liquid outlet of the first adsorption tower is connected to a filter B, a liquid outlet of which is connected to a wastewater treatment plant. The clear water tank, the alkali liquor tank and the acid liquor tank are all connected to the first adsorption tower. A nickel liquid outlet of the first adsorption tower is connected to the nickel liquid storage tank, which is connected to a concentration tank. The concentration tank is connected to the electrolysis device, which is connected to the nickel extraction device. An acid liquor outlet of the electrolysis device is connected to the acid liquor tank. The system provided by the invention has advantages of low cost, no secondary pollution and high recovery efficiency.

Description

technical field [0001] The invention relates to a nickel recovery system, in particular to a nickel recycling system. Background technique [0002] A certain amount of nickel-containing cleaning water is produced during the electroplating process, and the rinsing water contains a relatively high concentration of nickel ions, and the nickel content often exceeds the national discharge standard. Generally, the nickel content of the waste water is 0.3-1g / L, while the national discharge standard is 0.5 mg / L. If no recovery system is added, the nickel ions in the waste water will be wasted in vain, and certain treatment costs will be incurred. At present, the wastewater treatment usually adopts the method of sedimentation and flocculation after adjusting the pH value. This method requires a large number of operators, complicated procedures, and is prone to errors, resulting in the discharge of wastewater that does not meet the standard. Moreover, the flocculated solid product o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C22B7/00C25C1/08
CPCC22B7/006C25C1/08C02F9/00C02F2103/16C02F1/42C02F1/001C02F2301/08Y02P10/20
Inventor 韦建敏赵兴文张晓蓓张小波
Owner CHENGDU HONGHUA ENVIRONMENTAL SCI & TECH CO LTD
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