A device and method for rapid treatment and pulse enrichment of high-concentration heavy metal wastewater

Abstract

The invention relates to a pulse enrichment device and method for quick treatment of high-concentration heavy metal wastewater and discloses a novel heavy metal wastewater treatment device. The device comprises a filler tank, a direct current power supply, a wastewater recycling system and a leacheate recycling system. A metal electrode wire, ferric and carbon nano filter and a graphite electrode rod are used, the metal electrode wire and the graphite electrode rod are connected with the direct current power supply to enrich heavy metals, and the heavy metals are treated by the leacheate recycling system and discharged from the bottom of a concentration tank. When the heavy metals are treated, the leacheate can be further heated and recycled by a heating resistor in the concentration tank. The device provided by the invention can quickly purify the high-concentration heavy metal wastewater effectively and meanwhile can produce high-concentration heavy metal slurry to recover the heavy metals conveniently; therefore, the device has high economic and social values.

Description

technical field [0001] The invention relates to the field of heavy metal wastewater treatment, in particular to a device and method for rapid wastewater treatment and pulse enrichment of heavy metals for treating high-concentration heavy metal wastewater and recovering metal resources. Background technique [0002] At present, the problem of environmental protection has attracted the attention of the whole world. With the development and progress of science and technology, a large number of new pollution sources of high-concentration heavy metals are gradually emerging in the chemical industry, such as etching solution and other waste water containing heavy metal ions. More and more , and these heavy metal ions are discharged into environmentally polluted cultivated land and drinking water sources along with wastewater, which seriously endangers human health and safety. A waste of resources. Accordingly, my country pointed out in the "National Medium and Long-Term Science a...

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Problems solved by technology

Chinese patent CN101935119A reports an inventive method that uses resin adsorption, filtration ultrafiltration, reverse osmosis, activated carbon fiber adsorption and resin mixed bed to treat heavy metal wastewater, and uses extraction and stripping to reduce metal element or metal salt to realize the recovery and treatment of electroplating wastewater. However, the treatment process is cumbersome and complicated, and there are defects in the high cost of membrane treatment and the secondary pollution of the extract, which cannot fundamentally recover heavy metals efficiently and cheaply.

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