Electric flocculation-air flotation integrated waste water treatment equipment

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 ...

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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.

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