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Disc-type electrocatalytic water treatment device

A water treatment device, electrocatalysis technology, applied in the direction of water/sewage treatment, water/sewage treatment equipment, water/sludge/sewage treatment, etc., can solve the problems of hindering wide application, unstable effect, high power consumption, etc., to achieve Increase the placement density, increase the response time, and reduce the effect of arrangement spacing

Active Publication Date: 2019-01-29
陕西镐丰京诚环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its shortcomings such as high power consumption and unstable effect in actual use, it hinders its wide application.

Method used

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  • Disc-type electrocatalytic water treatment device
  • Disc-type electrocatalytic water treatment device
  • Disc-type electrocatalytic water treatment device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Ruthenium Oxide Coated Titanium Anode Disk Electrocatalytic Reactor for Treatment of Saline Industrial Wastewater:

[0043] a, the cathode pressing plate 8 is a stainless steel cathode pressing plate, and the anode plate 9 is a titanium anode plate coated with ruthenium oxide;

[0044] b. Use a multi-stage centrifugal pump to pump salt-containing industrial waste water from the water inlet 12 at a flow rate of 1m / s, and the fluid passes through the channels around the central hole of the cathode pressure plate 8 to form a return flow;

[0045] c. Adjust the applied electric field voltage to 2.0V and the current density to 10mA / cm 2 ;

[0046] d. After running stably for 1 hour, take a sample from the water outlet 11, and detect the water color, ammonia nitrogen, and COD indicators.

[0047] The influent COD is 483mg / L and ammonia nitrogen is 232mg / L, which can completely remove the chroma in the water body, the effluent COD is reduced to 40mg / L, and the ammonia nitrogen...

Embodiment 2

[0049] Disc-type electrocatalytic reactor with lead oxide coated titanium anode for the treatment of saline industrial wastewater:

[0050] a. The cathode plate 8 is a stainless steel cathode plate, and the anode plate 9 is a lead oxide-coated titanium anode plate;

[0051] b. Use a multi-stage centrifugal pump to inject saline industrial waste water from the water inlet 12 at a flow rate of 2m / s, and the fluid passes through the channels around the central hole of the cathode pressure plate 8 to form a return flow;

[0052] c. Adjust the applied electric field voltage to 3.0V and the current density to 20mA / cm 2 ;

[0053] d. After running stably for 1 hour, take a sample from the water outlet 11, and detect the water color, ammonia nitrogen, and COD indicators.

[0054] The influent COD is 483mg / L and ammonia nitrogen is 232mg / L, which can completely remove the chroma in the water body, the effluent COD is reduced to 45mg / L, and the ammonia nitrogen is reduced to 1mg / L, me...

Embodiment 3

[0056] a. The cathode plate 8 is a stainless steel cathode plate, and the anode plate 9 is an antimony-tin oxide-coated titanium anode plate;

[0057] b. Use a multi-stage centrifugal pump to pump salt-containing industrial waste water from the water inlet 12 at a flow rate of 3m / s, and the fluid passes through the channels around the central hole of the cathode pressure plate 8 to form a return flow;

[0058] c. Adjust the applied electric field voltage to 4.0V and the current density to 30mA / cm 2 ;

[0059] d. After running stably for 1 hour, take a sample from the water outlet 11, and detect the water color, ammonia nitrogen, and COD indicators.

[0060] The influent COD is 483mg / L and ammonia nitrogen is 232mg / L, which can completely remove the chroma in the water body, the effluent COD is reduced to 42mg / L, and the ammonia nitrogen is reduced to 1.2mg / L, meeting the first-class standard for comprehensive sewage discharge.

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Abstract

Provided is a disc-type electrocatalytic water treatment device. The disc-type electrocatalytic water treatment device comprises a casing with a water inlet and a water outlet, wherein a plurality ofcathode pressure pressing plates and anode plates which are sequentially stacked in a staggered mode are arranged in the casing, central holes are formed in the cathode pressing plates and anode plates, and a central shaft penetrates through the central holes to position and press the cathode pressing plates and the anode plates so as to form a disc-type structure and isolate the cathode pressingplates and the anode plates at the central holes; and when to-be-treated wastewater is introduced from the water inlet, the wastewater sequentially flows there and back among the cathode pressing plates and the anode plates so as to form a passage and flow out of the water outlet. The disc-type design is utilized to increase the reaction mass transfer efficiency and the reaction path, and the reaction efficiency of electrocatalytic oxidation is improved; since a cathode-anode staggered stacking mode is adopted by electrocatalytic electrodes, the electrode placement density is increased, and thus the reaction efficiency is increased; and it is shown by results of salt-containing industrial wastewater treatment that the method has good electrocatalytic oxidation ability, the removal efficiency of chroma, ammonia nitrogen and COD in high-salt wastewater can be improved significantly, and effluent can reach the comprehensive first-level discharge standard of the wastewater.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a dish-type electrocatalytic water treatment device. Background technique [0002] Electrocatalytic water treatment technology is an efficient water treatment technology for rapid oxidation and removal of organic pollutants, and has broad application prospects. The basic principle of electrocatalytic water treatment technology is to reduce or remove pollutants from wastewater by direct electrochemical reaction or indirect electrochemical conversion on electrodes. It can be divided into direct electrolysis and indirect electrolysis. Direct electrolysis refers to the removal of pollutants from wastewater by direct oxidation or reduction on electrodes. Indirect electrolysis refers to the use of electrochemically generated redox substances (such as chlorate, hypochlorite, H 2 o 2 and O 3 and solvated electrons, ·HO, ·HO 2 free radicals) act as reactants or catalysts to ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/467
CPCC02F1/46104C02F1/46109C02F1/4672C02F1/4676C02F2001/46152C02F2201/46105
Inventor 朱云庆马宏瑞牛军峰
Owner 陕西镐丰京诚环境科技有限公司
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