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Electrochemical reactor and method for processing organic pollutant in water

A technology for organic pollutants and water treatment, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of unfavorable proximity of positive and negative electrodes, poor treatment effect, and difficult local maintenance, etc. problems, to achieve the effect of reducing plate corrosion, small electrode spacing, and energy consumption reduction

Inactive Publication Date: 2014-01-15
TIANJING YIRONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is a problem with one of the plates, the whole set of plates needs to be replaced, and local repairs are very difficult
Moreover, the current electrode group structure is not conducive to the closeness of the positive and negative electrodes as much as possible, and it is easy to cause the positive and negative electrodes to directly contact and short circuit.
Because the positive and negative poles are difficult to get close to each other and consume energy, the power consumption is large and the processing effect is not good

Method used

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  • Electrochemical reactor and method for processing organic pollutant in water
  • Electrochemical reactor and method for processing organic pollutant in water
  • Electrochemical reactor and method for processing organic pollutant in water

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment one: see Figure 1 to Figure 4 As shown, an electrochemical reactor for treating organic pollutants in water includes a DC power supply, an electrolytic cell 3 and an electrode assembly arranged in the electrolytic cell 3, and the electrolytic cell 3 is provided with a water inlet 1 and a water outlet 2. The electrode assembly is mainly composed of an electrode frame, a cathode plate 7 and an anode plate 8. The electrode frame and the electrolytic cell 3 are of a split structure. The electrode frame includes insulating two side walls, a cathode conductive strip 10 and an anode conductive strip 11. The cathode conductive strip 10 and the anode conductive strip 11 are respectively fixed on the inner bottom of the two side walls, and the opposite inner sides of the two side walls are respectively provided with longitudinally arranged grooves 9, and the grooves 9 on the side plates are evenly distributed, and the adjacent grooves The distance between 9 is between...

Embodiment 2

[0028] Embodiment 2: The device of Embodiment 1 is used to process pharmaceutical wastewater test

[0029] The pharmaceutical wastewater is diluted 3 times and placed in an electrochemical reactor. The anode uses a titanium-based lead dioxide electrode, the cathode uses a titanium plate electrode, and the cathode and anode each use one piece. The electrode area is 12cm×15cm, and the distance between the cathode and the anode is 2cm. Control current density 12mA / cm 2 , T=20℃, degrade for 10h. See Table 1 for the results.

[0030] Table 1 Test results of treating pharmaceutical wastewater

[0031]

[0032] It can be seen from Table 1 that the chemical oxygen demand (COD) removal rate of wastewater after treatment is 60%, the removal rate of total phosphorus (TP) is close to 100%, and the removal rate of ammonia nitrogen (NH 3 -N) removal rate is about 91%, total nitrogen (TN) removal rate is 76.3%. The lower SUVA can indirectly reflect the better biochemical degradation p...

Embodiment 3

[0033] Embodiment 3: Treatment of chemical wastewater test

[0034] The device of Example 1 was used to treat certain chemical wastewater, and the results are shown in Table 2. The chemical wastewater is diluted 3 times and placed in an electrochemical reactor. The test conditions: the anode uses a titanium-based iridium-tantalum electrode, and the cathode uses a titanium plate electrode. The area of ​​the cathode and anode is 12cm×15cm, 8 pieces are used for the anode and 9 pieces are used for the cathode, the distance between the cathode and the anode is 0.5cm, and I=20A. The test temperature is 10°C, and the degradation takes 3 hours.

[0035] Table 2 Test results of chemical wastewater treatment

[0036]

[0037] The result shows that the device of the invention can effectively treat chemical wastewater.

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Abstract

The invention discloses an electrochemical reactor and a method for processing the organic pollutant in water. The electrochemical reactor comprises a direct-current power supply, an electrolytic bath and an electrode assembly arranged in the electrolytic bath. The electrochemical reactor is characterized in that the electrode assembly mainly comprises an electrode stand, a cathode plate and an anode plate, wherein the electrode stand and the electrolytic bath are in a split structure; the electrode stand comprises two insulated side walls, a cathode conducting bar and an anode conducting bar; the cathode conducting bar and the anode conducting bar are respectively fixed on the bottoms of the inner sides of the two side walls; the opposite inner sides of the two side walls are respectively provided with longitudinal grooves; the cathode plate and the anode plate are inserted in the groove between the two side walls and are arranged at an interval; the lower end of the cathode plate is in contacted connection with the cathode conducting bar; the lower end of the anode plate is in contacted connection with the anode conducting bar; the cathode conducting bar is electrically connected with the cathode of the direct-current power supply; and the anode conducting bar is electrically connected with the anode of the direct-current power supply. The electrochemical reactor disclosed by the invention has the advantages that energy consumption is less, electrocatalytic oxidation effect is good, the electrode is easy to install, and the subsequent electrode and the subsequent electrolytic bath are easy to clean.

Description

technical field [0001] The invention relates to a waste water treatment device, in particular to an electrochemical reactor and a method for treating organic pollutants in water. Background technique [0002] The treatment of high-concentration refractory organic wastewater is currently a recognized problem in the domestic and foreign sewage treatment circles. Its characteristic is that although the amount produced is not large, the concentration is high, it is difficult to biochemically degrade, and it causes great harm to the environment. For this type of wastewater, there are currently more researches at home and abroad on pharmaceutical wastewater, textile / printing and dyeing wastewater, petrochemical / oil wastewater, chemical wastewater, landfill leachate and other industrial wastewater. The superposition of the two characteristics of "high concentration" and "difficult to degrade" makes it impossible to use "conventional" methods such as biological methods or physicoche...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461
Inventor 魏杰王东田黄勇周娟黄雅钱雯艳
Owner TIANJING YIRONG TECH
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