A kind of electroflocculation treatment method of wastewater

A treatment method and electro-flocculation technology, applied in the field of electro-flocculation treatment of wastewater, can solve the problems of small electrode specific surface area, high flocculation cost, reduced wastewater treatment load, etc., achieve uniform and sufficient irradiation, improve flocculation efficiency, increase contact area and The effect of contact time

Inactive Publication Date: 2018-04-03
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing electrocoagulation technology has disadvantages such as: anode corrosion and passivation during the flocculation process, waste water treatment load will decrease with the anode corrosion, the specific surface area of ​​the electrode is small, and the flocculation cost is high.

Method used

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  • A kind of electroflocculation treatment method of wastewater
  • A kind of electroflocculation treatment method of wastewater
  • A kind of electroflocculation treatment method of wastewater

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Embodiment Construction

[0024] In order to better understand the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] like figure 1 As shown, the electrocoagulation reactor of the present invention with rotating cage net type packing includes electrocoagulation reaction tank 1, water inlet pipe 2, water outlet pipe 3, floc discharge pipe 4, water inlet retaining wall 5, ultraviolet lamp 7, rotating cage net Type filler electrode 9, variable frequency motor 6 and controller 10;

[0026] Wherein the electrocoagulation reaction tank 1 comprises a circular funnel-shaped pool body, the pool body diameter is 3m, the height of the cylinder is 2m, and the height of the lower cone is 1m; figure 2 ), each steel frame is provided with a rotating cage-type filler electrode 9, and the top of the electrode is riveted with the steel frame structure with bolts; There is an outlet pipe 3, and the bottom of the electrocoagulation ...

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Abstract

The invention discloses an electrocoagulation treatment method for wastewater. The wastewater enters the body of the electrocoagulation reaction pool through a water inlet pipe. The filler electrode is fed with current, starts to rotate, and the ultraviolet lamp is turned on for irradiation. The iron-based filler or aluminum-based filler coated with nano-titanium dioxide photocatalyst rolls continuously in the reactor. Pollutants undergo a photoelectrochemical synergistic reaction, so that the difficult-to-decompose and difficult-to-remove organic matter in the wastewater is converted into flocculated pollutants through photocatalytic chemical reactions; after the reaction is completed, the treated clean water is discharged, and the floc discharge pipe is opened to produce flocs discharge. The method overcomes the problems of anode consumption and anode passivation in electrocoagulation wastewater treatment equipment, and converts difficult-to-decompose and difficult-to-remove organic matter in wastewater into flocculated pollutants through photocatalytic chemical reactions and enriches them on the filler surface.

Description

technical field [0001] The invention relates to an electrocoagulation treatment method for wastewater, which belongs to the field of water treatment in environmental protection. Background technique [0002] The reaction mechanism of electrocoagulation is to use metals such as aluminum and iron as the anode and cathode. Under the action of direct current, the anode is eroded to produce metal ions. After a series of hydrolysis, polymerization, and ferrous oxidation processes, it develops into various hydroxyl complexes. This hydroxyl complex has a strong flocculation effect; the cathode can reduce the hydrogen ions in the wastewater to hydrogen, and the hydrogen will undergo air flotation. These two functions can remove colloids and suspended substances in the wastewater. Electrocoagulation can be widely used in the pretreatment of electroplating wastewater, landfill leachate, pharmaceutical factory wastewater, food wastewater and petrochemical wastewater. The existing elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/463C02F1/32
CPCY02W10/37
Inventor 董黎明秦泽敏周恋彤郑心愿
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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