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Nickel-containing industrial wastewater treatment device and process

A technology for industrial wastewater and treatment devices, which is applied in the fields of metallurgical wastewater treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the problems of no classification of nickel-containing wastewater, low nickel removal efficiency, and low phosphorus COD removal rate. , to achieve good recovery value, solve the problem of chemical waste, and improve the effect of treatment

Inactive Publication Date: 2018-03-06
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nickel-containing wastewater was not classified during the treatment process, and the removal efficiency of nickel was not high
At the same time, the removal rate of phosphorus, ammonia nitrogen and COD in wastewater is not high

Method used

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  • Nickel-containing industrial wastewater treatment device and process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Actual nickel-containing industrial waste water is processed by the above-mentioned pretreatment device according to the above-mentioned operating method. Ni in electroless nickel plating wastewater influent 2+ is 6120mg / L, COD is 32800mg / L, TP is 215mg / L, TN is 1580mg / L; 2+ It is 8120mg / L.

[0043] After stable operation, the results are as follows: Ni in water 2+ 0.05mg / L, effluent COD is 38mg / L, TP is 0.2mg / L, ammonia nitrogen is 5.9mg / L; 2+ , COD, ammonia nitrogen, and phosphorus removal have good results, and the system can always run stably.

Embodiment 2

[0045] Actual nickel-containing industrial waste water is processed by the above-mentioned pretreatment device according to the above-mentioned operating method. Ni in electroless nickel plating wastewater influent 2+ is 72500mg / L, COD is 37600mg / L, TP is 254mg / L, TN is 1850mg / L; 2+ It is 9540mg / L.

[0046] After stable operation, the results are as follows: Ni in water 2+ is 0.02mg / L, effluent COD is 45mg / L, TP is 0.31mg / L, and ammonia nitrogen is 4.5mg / L; 2+ , COD, ammonia nitrogen, and phosphorus removal have good results, and the system can always run stably.

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Abstract

The invention discloses a device and a process for treating nickel-containing industrial wastewater. The device comprises a set of combined reactors, chemical nickel wastewater and electronickelling wastewater are respectively treated with a chemical precipitation method, the precipitation time is prolonged, and the natural precipitation and water discharge is realized. Ammonia nitrogen is treatedby an ammonia nitrogen blowing and lifting device, and finally, the COD (chemical oxygen demand) is efficiently treated in a classified manner with an anaerobic-aerobiotic-artificial wetland system combination method. The actual nickel-containing industrial wastewater is inflow water, nickel is removed and recovered in the form of a chemical precipitate by controlling the material addition amountand the reaction time, meanwhile, the COD and the ammonia nitrogen are efficiently removed with a physical-biological combination method, and finally, effluent reaches the national discharge standard. On the basis that the wastewater is effectively treated, the recovery of the nickel is improved, and the device and the process have the advantages of simple process method, low operating cost and the like.

Description

technical field [0001] The invention mainly relates to the field of environmental protection equipment, in particular to a device capable of treating nickel-containing industrial wastewater and a treatment method thereof. The invention relates to the technical field of industrial nickel-containing wastewater treatment. technical background [0002] Nickel-containing wastewater is generally divided into two categories, one is electroplating nickel wastewater, and the nickel in it exists in the form of nickel ions. Another type of wastewater is electroless nickel plating wastewater, in which nickel ions are combined with complexing agents to form complex bonds, and the wastewater contains a large amount of hypophosphite ions. [0003] The composition of electroplating nickel wastewater is simple, and the nickel in it exists in the form of nickel ions. The main characteristic of electroless nickel plating wastewater is that after the plating solution has been used for several...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/20C02F103/16
CPCC02F1/001C02F1/20C02F1/5236C02F1/5281C02F3/02C02F3/28C02F3/32C02F9/00C02F2101/20C02F2103/16C02F2301/08
Inventor 李小明徐秋翔王冬波杨麒郝迪邓永超伍艳馨钟宇刘星群曾光明
Owner HUNAN UNIV
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