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AO-electrocatalytic oxidation combination percolate treatment device and technology for rubbish transfer station

A technology of electrocatalytic oxidation and garbage transfer station, which is applied in the direction of contaminated groundwater/leachate treatment, filtration treatment, multi-stage water treatment, etc., and can solve the problem of large fluctuations in effluent water quality, inability to guarantee, and difficulty in continuous and stable treatment of landfill leachate and other problems, to achieve good results, save device operating costs, and handle well

Active Publication Date: 2019-07-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, experiments have shown that it is difficult for a simple three-dimensional electrochemical system to continuously and stably treat the above-mentioned landfill leachate, and the effluent quality fluctuates greatly, which cannot be guaranteed.

Method used

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  • AO-electrocatalytic oxidation combination percolate treatment device and technology for rubbish transfer station
  • AO-electrocatalytic oxidation combination percolate treatment device and technology for rubbish transfer station
  • AO-electrocatalytic oxidation combination percolate treatment device and technology for rubbish transfer station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, it is an AO-electrocatalytic oxidation combined garbage transfer station leachate treatment device in this embodiment. The device mainly includes a water inlet unit 1, anaerobic unit 4, aerobic unit 6, filter unit 17, electrolytic Unit 18 and water outlet unit 16.

[0039]The water inlet unit 1 is a collection tank or storage tank for storing leachate of the garbage transfer station to be treated, and the outlet of the water inlet unit 1 is connected to the water inlet of the anaerobic unit 4 through the water inlet pipeline with the first water inlet pump 2 . The anaerobic unit 4 is an upflow anaerobic reactor filled with anaerobic biological filler 3, the water inlet is located at the bottom of the reactor, and the water outlet is located on the side wall of the reactor above the anaerobic biological filler 3. Oxygen biological filler 3 can be discharged from the water outlet. The anaerobic biological filler 3 will gradually form a film d...

Embodiment 2

[0041] Based on the treatment device in Example 1, the actual landfill leachate treatment was carried out to verify the ability of the AO-electrocatalytic oxidation combined process to treat the leachate of the village and town garbage transfer station.

[0042] The landfill leachate used in this example comes from a certain township waste transfer station, with a COD concentration of 31098±1270 mg / L and an ammonia nitrogen concentration of 525±23 mg / L. The fillers in the anaerobic unit 4 and the aerobic unit 6 are spherical fillers made of polyethylene, and both units are pre-inoculated with activated sludge from a sewage treatment plant. Commercially available titanium plates are installed on both sides of the electrolytic cell as the electrode plates 5 (the specification is 10 cm × 15 cm × 0.2 cm), and the distance between the electrode plates 5 is about 12 cm. During operation, 15V voltage is applied to both ends of the electrolysis unit 18 through the power supply 11 and ...

Embodiment 3

[0051] In Example 2, the particle electrode 15 will gradually deactivate during operation, but the operation of the device is continuous, and the device needs to be stopped for replacement after deactivation, which causes inconvenience to the actual operation. Therefore, this embodiment explores the regeneration process of the particle electrode 15 .

[0052] In this embodiment, the particle electrodes 15 that were replaced after the effect decreased during the experiment in embodiment 2 were mixed evenly and placed in pure water. After electrolysis at 10V for 3 hours, take it out to dry at room temperature, and put it back in a separate electrolysis unit for electrocatalytic oxidation of the landfill leachate. The duration of the electrocatalytic oxidation experiment is 60 minutes. Samples are taken every 10 minutes, and COD is performed on the collected water samples. And the detection of ammonia nitrogen concentration is used to analyze and evaluate the regeneration effect ...

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Abstract

The invention discloses an AO-electrocatalytic oxidation combination percolate treatment device and technology for a rubbish transfer station, and belongs to the field of rubbish percolate treatment devices. According to the device, firstly, rubbish percolate is subjected to biochemical pollutant degradation through anaerobic and aerobiotic units, then electrocatalytic oxidation is completed in anelectrolysis unit to further reduce pollutants and improve the biomedical performance of the pollutants, and finally, in order to strengthen the integral treatment performance of the technology, partial discharged water of the electrolysis unit newly flows back to the anaerobic unit for biochemical degradation again. Compared with a traditional single three-dimensional electrode treatment technology or a traditional single AO treatment technology, the technology is better in percolate treatment effect of the rubbish transfer station for rubbish of villages and small towns.

Description

technical field [0001] The invention belongs to the field of landfill leachate treatment, and in particular relates to an AO-electrocatalytic oxidation combined landfill transfer station leachate treatment device and process. Background technique [0002] According to the statistics of the Ministry of Housing and Urban-Rural Development, in 2016, the amount of domestic waste generated in rural areas in my country was about 180 million tons, and the amount of waste generated per capita was 0.8kg / d, of which at least 70 million tons were not processed. These garbage often stay in the garbage transfer stations of villages and towns for several days or even months. During this process, due to the lack of proper protective measures in many areas, the landfill leachate has entered through various methods such as soil infiltration or surface runoff. All kinds of receiving water bodies seriously endanger the safety of my country's rural water environment. How to realize economical a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/06
CPCC02F1/001C02F1/46114C02F1/4672C02F3/1236C02F3/2846C02F9/00C02F2001/46142C02F2103/06C02F2301/043C02F2301/08
Inventor 梁志伟林强罗安程陈宣才袁平
Owner ZHEJIANG UNIV