Treatment method of mine pothole waste water containing heavy metals

Abstract

The invention relates to the field of heavy metal waste water treatment, and discloses a treatment method of mine pothole waste water containing heavy metals. The method comprises the steps that: mine pothole waste water containing heavy metals is delivered from the bottom of an absorption exchange column loaded with a heavy metal absorption material; the waste water is processed by the absorption exchange column, and is discharged from the top of the absorption exchange column. When the heavy metal ions in the mine pothole waste water containing heavy metals pass through the heavy metal absorption material, the heavy metal ions are absorbed on the surface of the heavy metal absorption material; when the heavy metal ions on the surface of the heavy metal absorption material are enriched to a saturated degree, a sulfuric acid solution with a certain concentration is used for desorbing the heavy metal ions absorbed on the surface of the heavy metal absorption material; the desorption liquid is subjected to electrodeposition, such that high-purity heavy metal materials are obtained. With the method provided by the invention, discharged pothole waste water can stably reach a standard, and metal recovery is also achieved. Therefore, enterprise efficiency and environmental safety are both ensured.

Description

technical field [0001] The invention relates to the field of heavy metal-containing wastewater treatment, in particular to a method for treating heavy metal-containing wastewater in mine pits. Background technique [0002] With the increasing production activities such as mining, smelting, and processing of heavy metals, the heavy metal wastewater produced has greatly increased in both quantity and type, causing a lot of heavy metals to enter the ecosystem and causing serious environmental pollution. and waste of resources. Therefore, the treatment of heavy metal wastewater has always been a major issue in the field of environmental protection in the world. [0003] The heavy metal-containing wastewater mainly comes from mechanical processing, mining industry, iron and steel and non-ferrous metal smelting and some chemical enterprises. For example, the heavy metal-containing wastewater produced by the mining industry is mainly mining and mineral processing wastewater, whic...

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Problems solved by technology

However, this method has the disadvantages of slow propagation speed and reaction rate of functional bacteria, and difficult reuse of treated water.

[0024] To sum up, the traditional chemical and physical methods to treat copper-containing wastewater generally have a high metal concentration in the effluent, which is prone to secondary

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