A method for removing zinc ions in electroplating wastewater by using pulsed high voltage electric-microbial flocculation reaction tank

A technology for microbial flocculation and electroplating wastewater, applied in biological water/sewage treatment, electrochemical biological combined treatment, metallurgical wastewater treatment, etc. Scope of promotion and application, improving the efficiency of flocculation reaction, and the effect of low design and construction cost

Active Publication Date: 2020-11-27
日照新睿招商发展有限公司
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Problems solved by technology

Compared with the chemical precipitation method, the electrolysis method has the advantages of short cycle, low operating cost, and low energy consumption, which is beneficial to the recovery of zinc and salvage ineffectiveness, but the anode material iron consumes a lot and occupies a large area
[0008] At present, the existing zinc-containing electroplating wastewater treatment methods have the disadvantages of high cost, low efficiency, high energy consumption and secondary pollution.

Method used

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  • A method for removing zinc ions in electroplating wastewater by using pulsed high voltage electric-microbial flocculation reaction tank

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Embodiment Construction

[0019] like figure 1 In the shown method for removing zinc ions in the electroplating wastewater by using the pulsed high voltage-microbial flocculation reaction tank, the pH value of the effluent after pH adjustment is 6.5~8.0, so as to meet the requirements of the pulse high voltage-microbial flocculation reaction tank 5. The pH value of the incoming water is required, and then enters the pulse high-voltage electric-microbial flocculation reaction tank 5. The tank body is made of stainless steel, and the effective volume of the tank body is 270m 3 , the inner layer is sprayed with a corrosion-resistant coating, one underwater discharge electrode 52 is installed in the middle of both sides of the pool body, the peak voltage is 20kV, the pulse discharge frequency is 15~20 times / second, and a light steel bracket is installed above the pool body 53, 3 sets of drive motors 56 are installed on it, the working voltage of the drive motors 56 is 380V, each set of drive motors 56 is c...

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Abstract

The invention discloses a method for removing zinc ions in electroplating wastewater by using a pulsed high voltage-microbial flocculation reaction tank. This method creatively uses the microbial flocculation characteristics of the more common brewer's yeast and Bacillus licheniformis, and stimulates the adsorption and bridging characteristics of brewer's yeast and Bacillus licheniformis to zinc ions through the pulse high-voltage discharge process with a specific peak value, so that the wastewater in the wastewater Zinc ions undergo a flocculation reaction on the surface of the above-mentioned microorganisms, and gradually form flocs with larger diameters, which are finally removed through the precipitation process. At the same time, brewer's yeast and Bacillus licheniformis are common microorganisms, which are easy to obtain and low in cost, and can greatly reduce the material cost of wastewater treatment.

Description

technical field [0001] The invention relates to a method for removing zinc ions in electroplating wastewater by using a pulse high voltage-microbial flocculation reaction tank, and belongs to the field of wastewater treatment in environmental protection. Background technique [0002] With the rapid development of industrial production, heavy metal pollution in water is becoming more and more serious, among which zinc is one of the toxic pollutants in electroplating wastewater. After being directly discharged into the environment without treatment, zinc-containing wastewater can circulate through the food chain, reach a certain concentration level in some organisms, and eventually accumulate in the human body and endanger human health. Therefore, the development of economical and effective methods to control heavy metal pollution such as zinc has become an important content of current water pollution control, and more and more people pay attention to it. Methods for treating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00C02F3/34C02F103/16C02F101/20
CPCC02F3/005C02F3/34C02F3/347C02F2101/20C02F2103/16
Inventor 陈逸君
Owner 日照新睿招商发展有限公司
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