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Apparatus for recovery heavy metals from electroplating wastewater, and recovery method thereof

A technology for electroplating wastewater and recovery devices, which is applied in the direction of separation methods, metallurgical wastewater treatment, chemical instruments and methods, etc., and can solve the problems of high treatment and maintenance costs and complex equipment

Active Publication Date: 2016-10-26
宁波市海智材料产业创新研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It treats electroplating wastewater by first treating it with ion exchange resin to generate regeneration solution, and then electrolytically treating it. It also introduces swirling flow electrolysis technology to improve the treatment effect of wastewater, but its equipment is complicated, and the cost of treatment and maintenance is high.

Method used

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  • Apparatus for recovery heavy metals from electroplating wastewater, and recovery method thereof
  • Apparatus for recovery heavy metals from electroplating wastewater, and recovery method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment one, such as figure 1 as shown,

[0031] A device for recovering heavy metals in electroplating wastewater, including a device body composed of a processing unit, an anode concentration pool 1 and a cathode concentration pool 2 are arranged in the processing unit, an anode membrane 3 is arranged on the inside of the anode concentration pool 1, and an A cathode film 4 is arranged on the inner side, and an electroplating waste liquid channel 5 is formed between the anode film 3 and the cathode film 4. The electroplating waste liquid channel 5 is connected with a transfer pump 6, and the anode concentration pool 1 is provided with an anode plate 7, an anode plate 7 Connect with the positive pole of DC power supply 9 through lead wire 91, be provided with cathode plate 8 in cathode concentrating tank 2, cathode plate 8 is connected with the negative pole of DC power supply 9 through lead wire 91; Anode membrane 3 is anion exchange membrane, and cathode membrane 4...

Embodiment 2

[0034] Embodiment two, such as figure 2 as shown,

[0035] The recycling device in this embodiment is similar in structure to the recycling device in Embodiment 1, the difference is that in this embodiment, the anode film 3 and the cathode film 4 adopt a crawler structure. In this way, when the membrane is used for a period of time and its processing capacity declines, it is sufficient to replace a new section of membrane through the rotation of the crawler structure.

[0036] The anode plate 7 and the cathode plate 8 are of a turntable structure. In this way, a part of the pole plate is soaked in the solution of the concentration pool. When more metals are enriched on the pole plate, the new part of the pole plate can enter the concentration pool by rotating the pole plate with a turntable structure to continue. Handling, simple and convenient.

[0037] In the embodiment, the distance between the anode plate 7 and the cathode plate 8 is controlled below 5 mm. It is optim...

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Abstract

The invention discloses an apparatus for recovery heavy metals from electroplating wastewater. The apparatus comprises an apparatus body formed by a treatment unit, an anode concentration tank and a cathode concentration tank are arranged in the treatment unit, the inner side of the anode concentration tank is provided with an anode membrane, the inner side of the cathode concentration tank is provided with a cathode membrane, an electroplating waste liquid channel is formed between the anode membrane and the cathode membrane, the electroplating waste liquid channel is connected with a transfer pump, an anode plate is arranged in the anode concentration tank, a cathode plate is arranged in the cathode concentration tank, and the anode plate and the cathode plate are correspondingly connected with the positive electrode and the negative electrode of a direct current power supply through leading wires; and the anode membrane is an anion exchange membrane, the cathode membrane is a cation exchange membrane, or the anode membrane and the cathode membrane are porous dielectric membranes. The apparatus has a simple structure and is convenient to use; and the membrane can be selected according to the nutrient components of electroplating wastewater to be treated in the recovery process in order to carry out electrolytic treatment or electrodialysis treatment on the waste liquid flowing through the electroplating waste liquid channel, so heavy metals are recovered, thereby a recovery method is simple.

Description

technical field [0001] The invention relates to the technical field of electroplating wastewater treatment, in particular to the recovery of heavy metals in electroplating wastewater, in particular to a heavy metal recovery device and a recovery method for electroplating wastewater. Background technique [0002] There are about 15,000 electroplating factories in my country, and the average annual discharge of electroplating wastewater is as high as 4 billion tons, accounting for 1 / 6 of the total industrial wastewater discharge, but about 50% of the electroplating wastewater does not meet the national discharge standards. Therefore, how to remove or reduce the heavy metal content in electroplating sludge has become a problem that must be solved for municipal sludge disposal and resource utilization. [0003] In the prior art, the treatment methods for heavy metals in electroplating wastewater mainly include: chemical method, biological method, physicochemical method and elect...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/469C25C1/00C25C7/00C02F101/20C02F103/16
CPCC25C1/00C25C7/00C02F1/46104C02F1/46109C02F1/4693C02F2201/46115C02F2001/46161C02F2001/46152C02F2101/20C02F2001/46133C02F2103/16Y02P10/20
Inventor 巨东英滨本修松浦宏昭李宁李建农
Owner 宁波市海智材料产业创新研究院
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