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A new electrocoagulation device and electrocoagulation method

A new type of electro-flocculation technology, applied in chemical instruments and methods, metallurgical wastewater treatment, water/sewage treatment, etc., can solve the problems of passivation, replacement of the electrode plate to increase the workload, and the electrode plate cannot be fully used, etc., to achieve full response Time, electrochemical reaction speed, small footprint effect

Active Publication Date: 2020-06-23
深圳市小荷环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the existing technology, the purpose of the present invention is to provide a new type of electroflocculation device, which can solve the problems of increased workload in the replacement of the pole plate, incomplete use of the pole plate and passivation existing in the existing electrocoagulation treatment technology.

Method used

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  • A new electrocoagulation device and electrocoagulation method

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Embodiment 1

[0028] Embodiment 1: process electroless plating nickel-containing waste water

[0029] The iron-carbon micro-electrolytic packing bed is used as the cation donor, the iron-carbon ratio is 5:5, the bed layer is stacked in a rectangular shape, the filling length is 800mm, and the height is 600mm. Graphite is used as the plate, and the DC power supply is supplied at a voltage of 80V. Microporous aeration, the volume flow ratio of gas to water is 1:9, the treatment time of electroless nickel-containing wastewater is 30 minutes, and the COD after treatment Cr From 1050mg / L to 300mg / L, Ni 2 + From 96.5mg / L to 10.3mg / L, total phosphorus from 580mg / L to 95.7mg / L, ammonia nitrogen from 175mg / L to 37.8mg / L.

Embodiment 2

[0030] Embodiment 2: process electroless plating nickel-containing waste water

[0031] The aluminum-carbon micro-electrolytic packing bed is used as the cation donor, the aluminum-carbon ratio is 6:5, the bed layer is stacked in a rectangular shape, the packing length is 1000mm, and the height is 800mm. Graphite is used as the plate, and the DC power supply is powered by a voltage of 120V. Microporous aeration, the air-to-water ratio is 10:1, the treatment time of electroless nickel-containing wastewater is 20 minutes, and the COD after treatment Cr From 1050mg / L to 160mg / L, Ni 2+ From 96.5mg / L to 0.8mg / L, total phosphorus from 580mg / L to 10.1mg / L, ammonia nitrogen from 175mg / L to 20.3mg / L.

Embodiment 3

[0032] Embodiment 3: process electroless plating nickel-containing waste water

[0033] The iron-carbon micro-electrolytic packing bed is used as the cation donor, the iron-carbon ratio is 7:5, the bed layer is stacked in a rectangular shape, the filling length is 600mm, and the height is 600mm. Graphite is used as the plate, and the DC power supply is powered by a voltage of 110V. Microporous aeration, the air-to-water ratio is 2:7, the treatment time of electroless nickel-containing wastewater is 10 minutes, and the COD after treatment Cr From 1050mg / L to 100mg / L, Ni 2+ From 96.5mg / L to 0.1mg / L, total phosphorus from 580mg / L to 1.1mg / L, ammonia nitrogen from 175mg / L to 17.9mg / L.

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Abstract

The invention discloses a novel electric flocculation device. The novel electric flocculation device comprises an electrolytic cell body and a power supply, wherein positive and negative panel type electrodes connected with an anode and a cathode are arranged at two ends in the electrolytic cell body, the space between the positive and negative panel type electrodes is filled with microelectrolysis fillings and are supported by a porous support plate arranged in the electrolytic cell body, and an aeration device is further arranged below the porous support plate. According to the novel electric flocculation device, the microelectrolysis fillings are utilized for replacing a soluble anode as an electric flocculation positive ion donor, so that the problem that pole plates need to be replaced and cannot be completely utilized is avoided; and meanwhile, the positive ion donor is extended to iron, aluminum, zinc and copper fillings and a compound system, and the type of the fillings can be designed according to the property of wastewater, so that the electric flocculation function and the application range of the novel electric flocculation device are extended.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a device capable of realizing the electrocoagulation function without replacing polar plates. Background technique [0002] The electrocoagulation method uses a soluble metal electrode as the anode. Under the action of the electric field, the anode dissolves to produce a large number of cations to generate a series of polynuclear hydroxyl complexes and hydroxides, which absorb and condense suspended solids and organic substances in the water; Electrochemical oxidation and reduction reactions can occur with pollutants; microbubbles generated by electrolysis can also contact suspended solids and rise to the liquid surface to form a scum layer, thus having the function of air flotation. Therefore, the electrocoagulation method has multiple functions such as electrocoagulation, electroredox, and electroflotation, and can remove oil, emulsifier, colloid, susp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/463C02F103/16
CPCC02F1/463C02F2103/16C02F2201/46135C02F2201/4615
Inventor 吴思国王丹丹陈福明卢伟张祖江
Owner 深圳市小荷环保技术有限公司
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