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Integrated electrochemical reaction apparatus for processing difficultly degraded organic waste water and processing method thereof

A technology for organic wastewater treatment and chemical reaction, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., which can solve the problems of single treatment of pollutants, limited use, low current efficiency and utilization rate, etc. , to achieve the effect of speeding up the reaction process, increasing the rate and good treatment effect

Active Publication Date: 2017-07-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of traditional electrochemical processes is often limited due to the single treatment of pollutants and low utilization of current efficiency.

Method used

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  • Integrated electrochemical reaction apparatus for processing difficultly degraded organic waste water and processing method thereof
  • Integrated electrochemical reaction apparatus for processing difficultly degraded organic waste water and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]Inject refractory organic wastewater into the reactor housing 10 through the water inlet pipe 2; turn on the stabilized power supply 11 and start the motor 1, the current is 5A, the output speed of the motor 1 through the reducer 14 is 1.5 rpm, and the stainless steel cathode 6 Driven by the motor 1, it rotates slowly, and the wastewater is slowly stirred, so as to increase the molecular collision in the reaction process and improve the reaction efficiency; wherein, near the semi-arc ruthenium iridium anode 9, electricity occurs in the chlorine-containing wastewater The oxidation process can effectively remove the ammonia nitrogen in the waste water, and the hypochlorous acid oxidant produced can also disinfect the waste water. At the same time, the produced nitrogen gas has no secondary pollution; the semi-arc porous iron mesh 3 is used as the anode in parallel, and the external power supply Under the action, the iron mesh dissolves and flocculates with the hydroxide ion...

Embodiment 2

[0041] According to the operation steps of Example 1, the wastewater in the reactor shell 10 comes from the leachate of an aging landfill. The leachate of the aged landfill is highly polluting, the water quality fluctuates for a long time, and its biodegradability is poor. The integrated electrochemical reaction device can be used as treatment equipment in the pretreatment process to remove some pollutants in the wastewater, improve the biodegradability of the wastewater, and facilitate subsequent biochemical treatment. The current of the reaction device is 5A, and the residence time of waste liquid is 5h. The measured average influent COD, ammonia nitrogen and TP concentrations are 3000, 240 and 30mg / L respectively. Under the action of various mechanisms, the average effluent COD, ammonia nitrogen and The TP concentrations were 468, 47, and 3.2 mg / L, respectively, and the removal rates of COD, ammonia nitrogen, and TP in the reactor were 84%, 80%, and 88%, respectively, and th...

Embodiment 3

[0043] According to the operation steps of Example 1, the influent of the wastewater into the reactor shell 10 comes from the wastewater discharged from a coking plant. Toxic and refractory organic pollutants such as phenols, pyridine, and quinoline. This integrated electrochemical reaction device is used to treat coking wastewater. The influent is COD 3500mg / L, of which volatile phenol is 640mg / L and ammonia nitrogen is 280mg / L. Set the reaction current to 5A and the residence time to 8h. After the reactor, the average effluent COD is 600mg / L, the volatile phenol content is reduced to 28mg / L, and the ammonia nitrogen concentration is 21mg / L. The yellow-black sediment produced in the reaction process is discharged from the mud discharge pipe 5.

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Abstract

The invention belongs to the technical field of sewage processing, and concretely relates to an integrated electrochemical reaction apparatus for processing difficultly degraded organic waste water and a processing method thereof. A housing of a reactor is divided into a circle cavity reaction zone and a cone cavity precipitation zone, a semi-arc ruthenium iridium anode and a semi-arc porous iron net are arranged in the circle cavity reaction zone, the insulation pads which are symmetrically distributed are arranged at the intermediate part, and a stainless steel cathode is arranged in the housing of the reactor; a discharge pipeline is arranged at the bottom of the cone cavity precipitation zone, an water inlet pipe is arranged at the top of the housing of the reactor, a drainpipe is arranged at the bottom of the housing of the reactor; and the semi-arc ruthenium iridium anode, the semi-arc porous iron net and the stainless steel cathode are connected with stabilized power supply. Waste water is introduced into the reactor through the water inlet pipe, the reactor is turned on, the stabilized power supply and a motor are turned on, the cathode is rotated with the motor slowly, the waste water is stirred slowly with the cathode, the waste water is subjected to Fenton-like and electric flocculation reactions near the porous iron net, electrooxidation is generated near the ruthenium iridium anode, the waste water is discharged from the drainpipe, and a precipitate is discharged through the discharge pipeline.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of sewage treatment, and in particular relates to an integrated electrochemical reaction device and treatment method for refractory organic waste water treatment. [0003] Background technique: [0004] With the improvement of people's living standards and the rapid development of industrial and agricultural production, the direct discharge of untreated wastewater will bring greater pressure to the water environment and cause water pollution. The uneven distribution of water resources and the increasing pollution have accelerated the development of the water treatment industry. Controlling water pollution has become an important strategic goal for the sustainable utilization and development of global water resources. In order to be able to rationally develop and utilize water resources, sewage treatment technology continues to study and improve treatment methods. At present, the commonly used method...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/467C02F1/463
CPCC02F1/46104C02F1/46109C02F1/463C02F1/4672C02F2001/46133
Inventor 丁晶赵庆良王思宁黄慧彬
Owner HARBIN INST OF TECH
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