CN105289226A - Purification system of garbage compression box and leachate stench gas in garbage transfer station - Google Patents

Abstract

The invention discloses a waste compression box of a garbage transfer station and a purification system for leachate malodorous gas, comprising a garbage compression box (1), a gas collection cover (2) fixedly arranged on the compression box (1), a low-temperature plasma Body reaction device (3), blower fan (4), switching air valve (5), exhaust port (6), aeration head (7), and the top of the gas collection hood (2) react with low-temperature plasma sequentially through pipelines The device (3), the fan (4), and the switching air valve (5) are connected, and a leachate pool (8) is arranged under the compression box (1), and the gas switching air valve (5) is connected to the exhaust port (6) respectively. ), the aeration head (7) is connected, and the aeration head (7) is positioned above the leachate tank (8). The device collects and seals the malodorous gas in a relatively closed environment, improves the collection efficiency of the malodorous gas, adopts a low-temperature plasma reaction device, has high deodorizing and sterilizing efficiency, and has no secondary pollution, and is simple and reliable in operation.

Description

Garbage compression bins in the garbage transfer station and purification system for leachate malodorous gas

technical field

The invention relates to a garbage compression box of a garbage transfer station and a purification system for leachate malodorous gas, which belongs to the field of gas purification for environmental protection.

Background technique

The municipal waste transfer station is an important place for waste transfer, compression, and light weight. Since domestic waste generally contains more organic matter and a certain amount of water, it will be easily affected by microorganisms in waste dumping and landfill leachate due to poor ventilation. Fermentation odor, its main components are H2S and NH3, in addition to organic gases such as methyl mercaptan, methylamine, methyl sulfide, etc. The above gases are highly volatile, and some gases are toxic and smelly, with a strong pungent smell, which brings serious pollution to the surrounding air environment quality, and causes great harm to the work, life and physical and mental health of residents and sanitation workers. Especially in the hot summer, the bad smell near the garbage collection point and transfer station is more serious, and the environmental pollution is more serious.

The traditional methods of eliminating odors in garbage stations mainly include chemical spray method, biological deodorization method, and activated carbon adsorption method. Especially for the sanitation workers who have been working in the transfer station for a long time, it has great harm; the biological filter method is used to treat the odorous gas which is not water-soluble, which cannot be used immediately, and is not suitable for instant deodorization of the garbage transfer station. In recent years, low-temperature plasma waste gas treatment technology has begun to be applied to deodorization of garbage stations. The treatment of waste gas is to decompose or oxidize harmful waste gas molecules in an instant through high-energy or high-activity free radicals, and degrade them into non-toxic substances such as carbon dioxide and water. The technology is simple and reliable, and the device is ready to use. In particular, it has a wide range of applications and has a good treatment effect on different odor molecules. The disadvantage of this technology is that a large amount of ozone will be generated during the deodorization process, resulting in secondary pollution; in addition, there are also shortcomings in the efficient collection of malodorous gases.

Contents of the invention

The purpose of the present invention is to solve the problems existing in the prior art and propose a purification system for the garbage compression box of the garbage transfer station and leachate odorous gas. The system will collect the odorous gas in a relatively closed environment and adopt a low-temperature plasma reaction device The deodorization and sterilization efficiency is high, and there is no secondary pollution, and the operation is simple and reliable.

The present invention provides a purification system for garbage compression boxes and leachate malodorous gases in garbage transfer stations, including a garbage compression box 1, a gas collection hood 2 fixed on the compression box 1, a low-temperature plasma reaction device 3, and a fan 4 , switching air valve 5, exhaust port 6, aeration head 7, the top of the gas collecting hood 2 cover is connected with the low-temperature plasma reaction device 3, fan 4, and switching air valve 5 sequentially through pipelines, and the bottom of the compression box 1 is arranged The leachate pool 8, the gas switching air valve 5 are respectively connected with the exhaust port 6 and the aeration head 7, and the aeration head 7 is located above the leachate pool 8.

The inlet of the gas collecting hood 2 is provided with a metal filter screen, and the mesh of the metal filter screen is 10-30 mesh.

The above-mentioned low-temperature plasma reaction device 3 includes a low-temperature plasma reaction box and a low-temperature plasma power supply. The low-temperature plasma reaction box is distributed in an array of wire barrel-type low-temperature plasma reaction tubes. The length of a single tube is 500-800mm, and the diameter of the inner cylinder is 90-110mm, the low-temperature plasma power supply is a high-voltage pulse power supply, its frequency is 20kHz, and the maximum power is 2kW.

The above-mentioned aeration head 7 is conical.

The above-mentioned garbage compression box 1 includes a box body and a rolling door for a garbage truck to enter the garbage compression box on the box body.

Compared with the prior art, the present invention has the following beneficial effects:

(1) The device of the present invention concentrates the malodorous gas in a relatively closed environment, improving the collection efficiency of the malodorous gas;

(2) The device of the present invention uses a low-temperature plasma reaction device to deodorize landfill leachate and gas, and the malodorous gas is decomposed or oxidized in an instant, and degraded into non-toxic substances such as carbon dioxide and water. The technology is simple and reliable, and the device is opened immediately. Ready-to-use, especially for a wide range of applications, while reducing secondary pollution.

Description of drawings

Fig. 1 is a schematic structural diagram of the purification system of the garbage compression box of the garbage transfer station and the leachate malodorous gas of the present invention.

detailed description

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Fig. 1, a garbage compression box of a garbage transfer station of the present invention and a purification system for leachate malodorous gas include a garbage compression box 1 and a gas collecting hood 2 fixedly arranged on the compression box 1, a low-temperature plasma Body reaction device 3, blower fan 4, switching air valve 5, exhaust port 6, aeration head 7, the top of gas collecting hood 2 is connected with low-temperature plasma reaction device 3, fan 4, switching air valve 5 sequentially through pipelines, A leachate pool 8 is arranged below the compression box 1 , and the gas switching air valve 5 is respectively connected with the exhaust port 6 and the aeration head 7 , and the aeration head 7 is located above the leachate pool 8 .

Referring to Fig. 1 , the process of using the garbage transfer station garbage compression tank and leachate malodorous gas purification system of the present invention is as follows: before the garbage truck unloads, adjust the pipeline by switching the air valve 5 to make the air flow pass through the aeration head 7 Enter the leachate pool 8, then turn on the power supply of the fan 4 and the low-temperature plasma purification device 3 in turn, and the purification system enters the working state, allowing the gas to be pre-purified for 15 minutes; then the air valve 5 adjusts the pipeline to make the air flow through the exhaust At the same time, the rolling door on the garbage compression box 1 is opened to allow the garbage truck to enter the garbage compression box 1 for unloading. At this time, the odor generated at this time is distributed and filtered through the gas collection hood 2 and enters the low-temperature plasma reaction. Purification is carried out in the device 3, and the purified gas is discharged through the exhaust port 6. After the unloading is completed, the rolling door on the garbage compression box 1 is closed, and the air valve 5 is switched to adjust the pipeline so that the air flow enters the leachate pool 8 through the aeration head 7, and after 30 minutes of closed purification treatment, the low-temperature plasma is turned off in turn The power supply and blower fan 4 of purification device 3.

Claims (5)

1. the cleaning system of a garbage transfer station garbage compression box and percolate foul gas, it is characterized in that, this system comprises garbage-compressing casing (1) and is fixedly installed on the gas skirt (2) in compression casing (1), reaction of low temperature plasma device (3), blower fan (4), switch air-valve (5), exhaust outlet (6), aeration head (7), the top that gas skirt (2) covers by pipeline successively with reaction of low temperature plasma device (3), blower fan (4), switch air-valve (5) to connect, compression casing (1) below arranges diafiltration liquid pool (8), described gas switch air-valve (5) respectively with exhaust outlet (6), aeration head (7) connects, aeration head (7) is positioned at diafiltration liquid pool (8) top.

2. the cleaning system of garbage transfer station garbage compression box as claimed in claim 1 and percolate foul gas, it is characterized in that, above-mentioned gas skirt (2) entrance is provided with metal screen, and the mesh of metal screen is 10-30 order.

3. the cleaning system of garbage transfer station garbage compression box as claimed in claim 1 and percolate foul gas, it is characterized in that, above-mentioned reaction of low temperature plasma device (3) comprises reaction of low temperature plasma pipe, low-temperature plasma electrical source, reaction of low temperature plasma pipe is line cartridge type reaction of low temperature plasma pipe array distribution, single length of tube is 500-800mm, inner barrel diameter is 90-110mm, low-temperature plasma electrical source is high-voltage pulse power source, its frequency is 20kHz, and peak power is 2kW.

4. the cleaning system of garbage transfer station garbage compression box as claimed in claim 1 and percolate foul gas, it is characterized in that, above-mentioned aeration head (7) is taper.

5. the cleaning system of garbage transfer station garbage compression box as claimed in claim 1 and percolate foul gas, is characterized in that, above-mentioned garbage-compressing casing (1) comprises casing and is contained in the rolling door that garbage truck on casing enters garbage compression box.