Electric flocculation-air flotation integrated waste water treatment equipment

A technology of wastewater treatment and electro-flocculation, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Problems such as difficulty in replacement, to achieve the effect of saving fixed investment and floor space, reducing cell voltage and energy consumption, and preventing electrode passivation

Inactive Publication Date: 2011-03-09
SHENYANG POLYTECHNIC UNIV
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AI Technical Summary

Problems solved by technology

The electrocoagulation process has not been widely used in China. The main reason is that the design of the electrocoagulation reactor is immature, which leads to high energy consumption and high treatment costs in the electrolysis process. At the same time, it is difficult to standardize the processing and manufacturing of the electrolysis reactor, and the electrodes are prone to passivation. , difficult electrode connection and replacement, troublesome operation management and maintenance, etc.

Method used

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  • Electric flocculation-air flotation integrated waste water treatment equipment
  • Electric flocculation-air flotation integrated waste water treatment equipment

Examples

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Embodiment

[0045] Example: In June 2008, a set of printing and dyeing wastewater treatment facilities with electrocoagulation-air flotation integrated equipment as the core was established in the printing and dyeing workshop of a certain garment factory in Shenyang for experiments. The experiments proved that the treatment capacity is 5m 3 / h. The wastewater treatment facility has a simple process, compact equipment structure, easy to realize automatic control, continuous and stable operation so far, and no safety and technical problems have occurred. The effluent quality of the wastewater treatment facility is stable, and all indicators have reached the national secondary standard for comprehensive sewage discharge. The processing equipment covers an area of ​​less than 10m 2 , with a total investment of 140,000 yuan. The operating cost per ton of water is 1.2 to 1.5 yuan, which can be accepted by enterprises. Compared with other treatment processes of the same type of wastewater, th...

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Abstract

The invention relates to electric flocculation-air flotation integrated waste water treatment equipment which comprises a water distributing area, an electrolyzing area, an air flotation area, a settling area and a water outlet area, wherein the water distributing area adopts a large-resistance water distributing system; the electrolyzing area adopts an electrode fixing frame for fixing an electrode, the electrode adopts bipolar type connection, and a direct current power supply reverses the electrode at intervals to prevent passivation; after electrolyzing, slag-water separation of the wastewater is completed in the flotation area and the settling area; slag scraping equipment and a slag chute are arranged at the upper part of the flotation area; a sludge collecting board and a sludge discharge pipe are arranged at the lower part of the settling area; and the waste water after being separated by flotation and settling is discharged from the water outlet area. Compared with the original electric flocculation equipment, the invention has the advantages of simple structure, low investment, small floor space, simple operation and maintenance and the like, and the equipment is suitable for treatment of different waste water.

Description

Technical field: [0001] The invention belongs to the technical field of waste water treatment, and mainly relates to a waste water treatment equipment, in particular to an electric flocculation-air flotation integrated waste water treatment equipment. Background technique: [0002] Electrocoagulation is a water treatment process that uses soluble metal anodes to flocculate metal hydroxides produced during electrolysis to remove pollutants in water. In reality, anode materials are usually made of easily available and cheap metals such as aluminum and iron. Taking iron as an example, the basic reaction process is as follows: [0003] Anode reaction: Fe+2e→Fe 2+ [0004] Cathodic reaction: 2H 2 O+2e→H 2 ↑+2OH - [0005] Hydrolysis reaction: Fe 2+ +2OH - →Fe(OH) 2 ↓ [0006] The ferrous hydroxide precipitate produced by electrolysis has good flocculation and adsorption properties, and can effectively remove pollutants from wastewater. At the same time, the hydrogen ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F1/461
Inventor 王惠丰
Owner SHENYANG POLYTECHNIC UNIV
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