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Integrated treatment device for membrane filtration concentrated liquor of landfill leachate

A technology of landfill leachate and treatment device, which is applied in the treatment of polluted groundwater/leachate, oxidized water/sewage treatment, special compound water treatment, etc. The effect of small area, improved oxygen utilization rate, and improved degradability

Pending Publication Date: 2020-07-17
SHANGHAI ENVIRONMENTAL & SANITARY ENG DESIGN INST CO LTD +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of oxygen empty consumption and low utilization rate of ozone in the existing ozone technology, the present invention provides a plasma-assisted ozone integrated treatment device for landfill leachate membrane filtration concentrated liquid. The basic principle is that after ozone enters from the bottom of the reactor, , quickly contact with organic matter, directly or indirectly oxidize organic matter to realize the primary utilization of ozone; the remaining large amount of oxygen is combined with active hydrogen in the plasma device in the upper part of the reactor to produce hydrogen peroxide in situ, and react with ozone to produce hydroxyl radicals to realize ozone secondary use

Method used

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  • Integrated treatment device for membrane filtration concentrated liquor of landfill leachate

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Effect test

Embodiment 1

[0045] The treatment object is the leachate nanofiltration membrane liquid of domestic waste landfill (COD is 3000mg / L). figure 1 The main process parameters are as follows: the amount of water to be treated is 3L, the material of the inner and outer cylinders of the reactor is quartz glass, the ratio of the height to diameter of the inner sleeve is 8, the ratio of the upper and lower sections of the inner cylinder is 1 / 3, and the diameter of the inner and outer cylinders is than 1 / 2. The material of the discharge electrode and the metal current lead-out wire used are copper wires, the diameters are 0.5cm and 2cm respectively, and the discharge power is 10W. The umbrella-shaped aeration head made of titanium is used, with a pore size of 0.22-0.45 μm. The hydrogen volume concentration is 2%, the ozone concentration is 80mg / L, the flow rate is 1L / min, the reaction treatment is 120min, the oxygen utilization rate is increased by 21.5%, the ozone utilization rate is increased by ...

Embodiment 2

[0047] The treatment object is the leachate nanofiltration membrane liquid of domestic waste landfill (COD is 10000mg / L). figure 1 The main process parameters are as follows: the amount of water to be treated is 3L, the material of the inner and outer cylinders of the reactor is quartz glass, the height-to-diameter ratio of the inner sleeve is 20, the ratio of the upper and lower sections of the inner cylinder is 1 / 4, and the diameter of the inner and outer cylinders than 1 / 2. The material of the discharge electrode and the metal current lead-out wire used are copper wires, the diameters are 0.5cm and 2cm respectively, and the discharge power is 10W. The umbrella-shaped aeration head made of titanium is used, with a pore size of 0.22-0.45 μm. The hydrogen volume concentration is 2%, the ozone concentration is 80mg / L, the flow rate is 1L / min, the reaction treatment is 120min, the oxygen utilization rate is increased by 19.8%, the ozone utilization rate is increased by 18.2%, a...

Embodiment 3

[0049] The treatment object is the leachate nanofiltration membrane liquid of domestic waste landfill (COD is 20000mg / L). figure 1 The main process parameters are as follows: the amount of water to be treated is 3L, the material of the inner and outer cylinders of the reactor is quartz glass, the height-to-diameter ratio of the inner sleeve is 50, the ratio of the upper and lower sections of the inner cylinder is 1 / 4, and the diameter of the inner and outer cylinders than 1 / 2. The material of the discharge electrode and the metal current lead-out wire used are copper wires, the diameters are 0.5cm and 2cm respectively, and the discharge power is 10W. The umbrella-shaped aeration head made of titanium is used, with a pore size of 0.22-0.45 μm. The hydrogen volume concentration is 2%, the ozone concentration is 80mg / L, the flow rate is 1L / min, the reaction treatment is 120min, the oxygen utilization rate is increased by 18.8%, the ozone utilization rate is increased by 16.4%, a...

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Abstract

The invention relates to an integrated treatment device for membrane filtration concentrated liquor of landfill leachate. The integrated treatment device is composed of a dielectric barrier dischargeplasma generation section located at the upper section of the device and a synergistic ozone pollutant reaction section located at the lower section of the device. The upper section of the device is provided with a hydrogen inlet, an insulating partition plate is inserted between the upper section and the lower section, and a plasma hydrogen inlet conduit is arranged. An exhaust port, a water sample outlet, an inlet and an ozone and oxygen inlet are formed in the lower section of the device. Circulating water used for cooling and connecting grounding electrodes is injected between a reactor inner cylinder and a reactor outer cylinder. A discharge electrode is inserted into the reactor inner cylinder. A microporous aeration head is arranged at the bottom of the reactor inner cylinder. Garbage membrane filtration concentrate enters the inner cylinder, ozone and oxygen mixed gas enters the inner cylinder through microbubble aeration, plasma hydrogen is generated through dielectric barrierdischarge and introduced below the liquid level of the garbage membrane filtration concentrate and reacts with oxygen to generate hydrogen peroxide in situ, enhanced oxidation treatment of organic matter is achieved, and the degradation capacity is improved.

Description

technical field [0001] The invention belongs to the landfill leachate treatment device in the technical field of environmental protection engineering, and in particular relates to a plasma-cooperative ozone integrated treatment device for the membrane filtration concentrated liquid of the landfill leachate. Background technique [0002] At present, the annual domestic garbage removal volume in my country has reached 200-300 million tons, of which more than 100 million tons are disposed of by incineration. During the process of dumping garbage, a by-product of garbage disposal, leachate, which is more harmful to the environment, will be produced. In order to reduce the potential risk of the discharge of landfill leachate to the overall environment, my country requires the construction of in-situ treatment equipment for leachate that complements each other in the incineration plant or landfill area to ensure that the discharge of leachate meets the "Pollution Control Standards...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F101/30C02F103/06
CPCC02F1/30C02F1/78C02F2101/30C02F2103/06C02F2305/023
Inventor 陈善平王声东张瑞娜宋立杰邰俊刘庄泉曹瑞杰
Owner SHANGHAI ENVIRONMENTAL & SANITARY ENG DESIGN INST CO LTD
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