Electrochemical-membrane separation water-treatment plant and treatment method thereof

A water treatment device and technology of a treatment device, applied in the field of water treatment, can solve the problems of membrane flux decrease, pH value easy to change, and precipitated particles clogging membrane pores, etc., to simplify the structure and composition, speed up the treatment speed, and slow down membrane fouling Effect

Inactive Publication Date: 2019-07-12
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above device can electrochemically treat the wastewater first, the precipitated particles generated by the electrochemical treatment are easy to deposit on the membrane surface to block the membrane pores, resulting in a decrease in the membrane flux. At the same time, the pH value of the solution is prone to change during the electrochemical operation. , affect the existing form of ions in water, which is not conducive to the normal process of water treatment

Method used

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  • Electrochemical-membrane separation water-treatment plant and treatment method thereof
  • Electrochemical-membrane separation water-treatment plant and treatment method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0053] This embodiment provides an electrochemical-membrane separation water treatment device, the structural diagram of the device is as follows figure 1 As shown, a reaction pool 3 is included, and a membrane module 2 is arranged in the reaction pool 3. The membrane module 2 is a hollow fiber membrane module, and the membrane is a conductive membrane, and the conductive membrane material is a carbon material.

[0054] One side of the membrane assembly 2 is provided with an anode plate 1 parallel to the membrane assembly 2 , and the membrane assembly 2 is used as a cathode plate and the anode plate 1 is connected to an external power supply 7 .

[0055] The main body of the reaction tank 3 is provided with a water inlet 4 and a water outlet 6, and the outlet of the membrane module 2 is connected with the water outlet 6 on the main body of the reaction tank 3; There is a water return port 5.

[0056] There are two membrane components 2 and two anode plates 1, which are arrang...

Embodiment 2

[0059] This embodiment provides an electrochemical-membrane separation water treatment device, the device includes a reaction tank 3, a membrane module 2 is arranged in the reaction tank 3, the membrane module 2 is a plate-type membrane module, and the membrane therein is a conductive membrane, The conductive film material is a porous titanium plate.

[0060] One side of the membrane assembly 2 is provided with an anode plate 1 parallel to the membrane assembly 2 , and the membrane assembly 2 is used as a cathode plate and the anode plate 1 is connected to an external power supply 7 .

[0061] The main body of the reaction tank 3 is provided with a water inlet 4 and a water outlet 6, and the outlet of the membrane module 2 is connected with the water outlet 6 on the main body of the reaction tank 3; There is a water return port 5.

[0062] The membrane assembly 2 and the anode plate 1 are all one; an induction electrode is arranged between the membrane assembly 2 and the anod...

Embodiment 3

[0065] This embodiment provides an electrochemical-membrane separation water treatment device, the device includes a reaction tank 3, a membrane module 2 is arranged in the reaction tank 3, and an anode is arranged on one side of the membrane module 2 parallel to the membrane module 2 plate 1, the membrane assembly 2 is used as a cathode plate and the anode plate 1 is connected to an external power supply 7.

[0066] The main body of the reaction tank 3 is provided with a water inlet 4 and a water outlet 6, and the outlet of the membrane module 2 is connected with the water outlet 6 on the main body of the reaction tank 3; There is a water return port 5.

[0067] The membrane module 2 and the anode plate 1 are three, and are arranged alternately in the reaction cell 3; wherein in the anode plate 1, one is an aluminum electrode, and the other is an RuO electrode. 2 electrodes, the last one is IrO 2 -MnO 2 Composite electrode; the membrane module 2 is a hollow fiber membrane ...

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Abstract

The invention provides electrochemical-membrane separation water-treatment plant and a treatment method thereof. The plant comprises a reaction tank, inside which a membrane module is arranged. The membrane in the membrane module is a conductive membrane. A positive plate is arranged parallel to the membrane module at one side of the membrane module. The membrane module, which is used as a negative plate, and the positive plate are connected with an external power source. The main body of the reaction tank is equipped with a water inlet and a water outlet. An outlet of the membrane module is connected with the water outlet on the main body of the reaction tank. By combining electrochemistry and membrane separation process, polluted water is pretreated by electrooxidation or electric flocculation to form a pollutant filter cake layer, and the membrane module having the conductive membrane is used as the cathode to degrade the pollutant. Thus, membrane pollution is alleviated and the membrane cleaning effect is also achieved, the service cycle of the membrane is prolonged, and service life of the membrane is prolonged. Meanwhile, separation efficiency of pollutants in water is enhanced, and the water quality of effluent is improved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to an electrochemical-membrane separation water treatment device and a treatment method thereof. Background technique [0002] Membrane separation technology is a water treatment technology that has been widely used in recent years. Commonly used membrane separation technologies mainly include microfiltration, ultrafiltration, nanofiltration, and reverse osmosis. Membrane separation technology uses the physical sieving effect to intercept pollutants larger than the membrane pore size, but at the same time, due to the accumulation of intercepted pollutants on the membrane surface and the growth of microorganisms in the water body on the membrane surface, it is easy to cause a decline in the effluent flux. It affects the normal operation of the membrane module, reduces the service life of the membrane, and increases the application cost of the membrane separation technology. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/463C02F1/461C02F1/72C02F1/44
CPCC02F1/442C02F1/444C02F1/463C02F1/4672C02F2303/16
Inventor 胡承志孙境求曲久辉刘锐平马百文
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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