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Reactor and method for treating landfill leachate concentrated solution through enhanced electrochemical method

A landfill leachate and reactor technology, applied in chemical instruments and methods, sterilization/microdynamic water/sewage treatment, water/sewage treatment, etc., can solve the problem of high energy consumption, long reaction time, low COD degradation efficiency, etc. To achieve the effect of enhancing penetration performance, improving removal efficiency, and improving treatment efficiency

Pending Publication Date: 2022-04-15
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above technical problems, the present disclosure provides a leachate concentrate reactor that performs pretreatment by electrocoagulation, and then enters the electrooxidation chamber and UV reaction chamber, which solves the problem of low degradation efficiency of organic matter COD by a single process. Disadvantages of longer reaction time and higher energy consumption

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  • Reactor and method for treating landfill leachate concentrated solution through enhanced electrochemical method
  • Reactor and method for treating landfill leachate concentrated solution through enhanced electrochemical method
  • Reactor and method for treating landfill leachate concentrated solution through enhanced electrochemical method

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Effect test

Embodiment 1

[0040] Such as Figure 1-3 As shown, a reactor for intensified electrochemical treatment of landfill leachate concentrate includes an electro-oxidation device, an electro-coagulation device arranged upstream of the electro-oxidation device, and a UV reaction device arranged downstream of the electro-oxidation device .

[0041] Further, the electro-oxidation device includes an electro-oxidation chamber, and an electro-oxidation anode plate and an electro-oxidation cathode plate are arranged inside the electro-oxidation chamber;

[0042] The electrocoagulation device includes an electrocoagulation chamber, and an electrocoagulation anode plate and an electrocoagulation cathode plate are arranged in the electrocoagulation chamber;

[0043] The UV reaction chamber is provided with a photoreaction device, and the inner wall of the UV reaction chamber is covered with a TiO2 film, and the TiO2 film is fixed on the inner wall of the UV reaction chamber through a stainless steel mesh....

Embodiment 2

[0055] A method for using a reactor for intensifying electrochemical treatment of landfill leachate concentrate, the method is as follows:

[0056] (1) Enter the concentrated liquid wastewater into the electrocoagulation chamber through the water inlet, switch on the power supply, control the voltage to 1.5V, and perform electrolysis for 30 minutes;

[0057] (2) After the electrolysis is completed, the sedimentation begins. After the sedimentation is completed, the supernatant is sent to the electro-oxidation chamber. After the reaction is completed, the pump is started, and the electro-oxidized water is sent into the UV reaction chamber, and the reaction is cycled. The reaction time for 2h;

[0058] (3) After the reaction is completed, the treated water overflows from the water outlet of the UV reaction chamber;

[0059] (4) At the same time, after the completion of the reaction, settle for 20 minutes, discharge the sludge through the sludge pipe, and collect the settled slu...

Embodiment 3

[0061] A method for using a reactor for intensifying electrochemical treatment of landfill leachate concentrate, the method is as follows:

[0062] (1) Enter the concentrated liquid wastewater into the electrocoagulation chamber through the water inlet, switch on the power supply, control the voltage to 7V, and perform electrolysis for 40 minutes;

[0063] (2) After the electrolysis is completed, the sedimentation begins. After the sedimentation is completed, the supernatant is sent to the electro-oxidation chamber. After the reaction is completed, the pump is started, and the electro-oxidized water is sent into the UV reaction chamber, and the reaction is cycled. The reaction time for 3h;

[0064] (3) After the reaction is completed, the treated water overflows from the water outlet of the UV reaction chamber;

[0065] (4) After the simultaneous reaction, settle for 30 minutes, discharge the sludge through the sludge pipe, and collect the settled sludge.

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Abstract

The invention relates to a reactor and a method for treating landfill leachate concentrate by an enhanced electrochemical process. The reactor comprises an electrooxidation device, an electric flocculation device arranged at the upstream of the electrooxidation device, and a UV reaction device arranged at the downstream of the electrooxidation device. The electrooxidation device comprises an electrooxidation chamber, and an electrooxidation anode plate and an electrooxidation cathode plate are arranged in the electrooxidation chamber; the electric flocculation device comprises an electric flocculation chamber; an electric flocculation anode plate and an electric flocculation cathode plate are arranged in the electric flocculation chamber; a photoreaction device is arranged in the UV reaction chamber, the inner wall of the UV reaction chamber is covered with a TiO2 film, and the TiO2 film is fixed on the inner wall of the UV reactor through a stainless steel metal net. The leachate concentrated solution is pretreated and then enters the leachate concentrated solution reactor of the electrooxidation chamber and the UV reaction chamber, so that the defects of low degradation efficiency, long reaction time and high energy consumption of a single process on organic matter COD (Chemical Oxygen Demand) are overcome.

Description

technical field [0001] The disclosure relates to the technical field of landfill leachate treatment, in particular to a reactor and a method for intensifying electrochemical treatment of landfill leachate concentrate. Background technique [0002] Leachate escaping during disposal of municipal solid waste in landfills or through incineration can pose a significant threat to the environment. And their composition is often complex and unpredictable, but usually high in organic matter, high in ammonia, and poor in biodegradability. In order to meet strict discharge standards, membrane technologies such as ultrafiltration, nanofiltration and reverse osmosis have been applied to leachate treatment. Although the quality of effluent water after membrane treatment has reached the standard, how to properly dispose of the concentrate produced in the membrane separation process It has become another technical problem in engineering application, and under the current situation, the eff...

Claims

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Application Information

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IPC IPC(8): C02F1/463C02F1/467C02F1/32C02F11/12C02F101/30C02F101/36
CPCC02F1/463C02F1/4672C02F1/32C02F11/12C02F2101/30C02F2101/36
Inventor 孙昕王晓荣高欣宇
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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