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Nickel-containing wastewater reuse treatment process and treatment system thereof

A treatment process and treatment system technology, applied in the field of nickel-containing wastewater reuse treatment process and treatment system, can solve the problems of high cost and long treatment time, and achieve the effect of improving adsorption capacity and helping particle flocculation

Inactive Publication Date: 2020-06-16
无锡清诺环境工程有限公司
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Problems solved by technology

[0004] In the above-mentioned nickel-containing wastewater treatment method, after adjusting the pH value in the secondary reaction sedimentation tank to between 10.0-10.5 and re-precipitating, there are still unreacted Ni ions in the wastewater. To reduce the residual Ni ions, it is necessary to increase the The amount of dosing and the number of times of dosing in the process, so this treatment method has the disadvantages of long treatment time and high cost

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  • Nickel-containing wastewater reuse treatment process and treatment system thereof

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] refer to figure 1 , is a nickel-containing waste water recycling treatment system disclosed in the present invention, comprising a waste water collection tank 1, a waste water lift pump 2, an acidification tank 3, a Fenton reaction tank 4, a reaction tank 5, a sedimentation tank 6, and a DF reaction tank connected in sequence Tank 7, DF concentration tank 8, DF circulation pump 9, DF microfiltration membrane system 10, product water regulation tank 11, DF product water storage tank 12, discharge pump 13.

[0029] Design parameters of waste water collection tank 1: volume 100m³, concrete inner wall anti-corrosion treatment, supporting liquid level controller. The main function of the waste water collection tank 1 is to preliminarily adjust the waste water, so that the temperature, water volume and water quality of the waste water can reach relatively s...

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Abstract

The invention relates to the technical field of nickel-containing wastewater treatment, in particular to a nickel-containing wastewater reuse treatment process which comprises: performing wastewater aeration; adding acid into the wastewater to adjust the pH value to be low, and then carrying out a Fenton reaction; adding NaOH and CaCl2 into the wastewater at the same time, and then performing precipitation; precisely adding NaOH into the wastewater to adjust the pH value; adding organic modified silica sol and PAC into the wastewater; feeding the wastewater into a DF system; adjusting the PH value of the recycled water produced by the DF system to 6.0-9.0; dewatering the sludge concentrated by the DF system. By adding a certain amount of the SC-101 type organic modified silica sol and thePAC into the pool, Ni which does not react fully in the wastewater is reacted completely, Ni(OH)2 particles in the wastewater are flocculated into large particles, and advanced treatment of the back-end DF system is facilitated.

Description

technical field [0001] The invention relates to the technical field of nickel-containing wastewater treatment, in particular to a nickel-containing wastewater reuse treatment process and a treatment system thereof. Background technique [0002] The production of aluminum alloy profiles will produce nickel-containing wastewater, which contains a large amount of organic complexing agents, and nickel ions are combined by complexing agents to form complexes. It is difficult to treat such nickel-containing wastewater to meet the standards, which is a difficult treatment in the industry. waste water. [0003] At present, commonly used wastewater treatment methods include chemical precipitation, ion exchange, adsorption, electrodialysis, and reverse osmosis. For example, the invention patent with the notification number CN104528987A discloses a treatment method for nickel-containing wastewater, the treatment method includes: collecting nickel-containing wastewater using a nickel-c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/20
CPCC02F1/281C02F1/444C02F1/5236C02F1/5245C02F1/66C02F1/725C02F9/00C02F2001/007C02F2101/20C02F2201/007
Inventor 刘康华任海峰
Owner 无锡清诺环境工程有限公司