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Reproducible heavy metal complexing agent and application method thereof

A complexing agent and heavy metal technology, applied in the field of water treatment, can solve the problems of high operating cost and difficult treatment of concentrated solution, and achieve the effect of improving removal rate, easy regeneration, and reducing operating cost

Inactive Publication Date: 2012-05-02
PEKING UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the concentrated solution existing in the prior art is difficult to handle and the running cost is high, and provide a kind of reproducible heavy metal complexing agent and its use method, because the complexing property of this complexing agent and metal And the property that it is not easy to be oxidized and reduced in electrodeposition, the complexing agent can be used in the ultrafiltration-electrodeposition combination method, not only can the concentrated solution be effectively treated, reduce the risk of secondary pollution, and the complexing agent can be used in It is regenerated during the electrodeposition process, and the operation cost is effectively reduced through the reuse of the complexing agent

Method used

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  • Reproducible heavy metal complexing agent and application method thereof
  • Reproducible heavy metal complexing agent and application method thereof

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Embodiment 1

[0028] The method of the present invention is used to treat copper-containing heavy metal wastewater with a concentration of 100mg / L, the influent pH is 4.6, the water temperature is 25°C, the hydrolyzed collagen is used as the complexing agent, and the water is purified through the ultrafiltration membrane system. Sedimentation treatment to realize the recovery of copper, the regeneration and recycling of hydrolyzed collagen. The hydrolyzed collagen, multi-media filter, ultrafiltration membrane system, two-dimensional flat plate electrodeposition device, etc. used in this process are all conventional wastewater recovery Processing device. The hydrolyzed collagen used in the present invention has a molecular weight of 2000-3000 and is obtained by enzymatic hydrolysis. Specifically: According to the method of CN101948900A, fresh cowhide is used as raw material, after treatment with sodium hydroxide solution, papain and alkaline protease are added in stages, and a complex enzymat...

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Abstract

The invention aims to provide a reproducible heavy metal complexing agent and an application method thereof. In the method, hydrolyzed collagen serving as a complexing agent is applied to a membrane separating process, and heavy metal copper-containing waste water is integrally treated by performing membrane separation-electrolysis. The method mainly comprises the following steps of: enriching; filtering; concentrating; decomplexing; electrodepositing; refluxing and the like to realize efficient recovery of heavy metal copper-containing waste water.

Description

Technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an industrial wastewater treatment method, in particular to a treatment method for heavy metal copper-containing wastewater. Background technique [0002] Heavy metal wastewater is one of the industrial wastewater that has serious environmental pollution and great harm to human health. There are a wide range of sources of heavy metal wastewater, mainly in electroplating, mining and metallurgy, electronics, machinery manufacturing and chemical industries. With the rapid development of these industries, a large amount of heavy metal wastewater is discharged, which has attracted increasing attention. According to the different sources and components of wastewater, the treatment methods of heavy metal wastewater are different. Generally speaking, the main methods for treating heavy metal wastewater are: chemical precipitation, adsorption, ion exchange, electrochemica...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/56C02F1/66C02F1/44C02F101/20
Inventor 包立超李振山曹光亮宋立娜
Owner PEKING UNIV
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