A dust reduction and deodorization system for garbage transfer stations

Abstract

The dust reduction and deodorization system for a garbage transfer station provided by the present invention deodorizes the exhaust gas in the garbage transfer station by arranging an ion fresh air system, and reduces and deodorizes the exhaust gas at the discharge port located at the unloading, compression and transfer point by arranging a terminal dust removal and deodorization system, thereby achieving the technical effect of reducing and deodorizing the exhaust gas from the garbage transfer station; and by arranging a filter screen for filtering particulate matter in the exhaust gas at the exhaust port in the terminal dust removal and deodorization system, not only the dust removal effect of the terminal dust removal and deodorization system is enhanced, but also the treatment requirements of the washing tower are reduced; and by making the air volume flowing out of the air inlet and the exhaust port of the garbage transfer station greater than the air volume flowing into the air inlet and the outlet, the internal air pressure of the garbage transfer station is maintained in a slightly negative pressure state of less than ‑0.02MPa and greater than ‑0.05MPa, thereby ensuring that the exhaust gas in the garbage transfer station does not diffuse outward.

Description

Technical Field

[0001] The invention relates to the field of dust reduction and deodorization, and in particular to a dust reduction and deodorization system for a garbage transfer station. Background Art

[0002] As the most important garbage treatment center in the city, the garbage transfer station is responsible for the transfer of urban domestic garbage. Since the garbage transfer station involves the unloading, compression and transportation of garbage, it will produce dusty and smelly waste gas. How to reduce dust and deodorize the garbage transfer station is the main problem faced by all garbage transfer stations.

[0003] In response to this phenomenon, the existing technology usually adopts water washing, photocatalytic oxidation, low-temperature plasma and other processes to solve the waste gas problem of garbage transfer stations. However, years of practice have shown that the efficiency of water washing and photocatalytic oxidation alone in treating waste gas is not high, and the transfer hall and unloading hall in the garbage transfer station still have a strong odor, and the surrounding residents often complain, which has a certain impact on the lives of nearby residents. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a more efficient dust reduction and deodorization system for a garbage transfer station.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is a dust reduction and deodorization system for a garbage transfer station, comprising:

[0006] An ion fresh air system, the ion fresh air system comprising: a collecting device, a reaction chamber, a negative ion generator located in the reaction chamber, and an air supply device, the collecting device is connected to the reaction chamber, the collecting device is used to collect air in the atmosphere into the reaction chamber, the negative ion generator is used to ionize the air to generate negative ions, the air supply device is connected to the air outlet of the garbage transfer station, and the air supply device comprises an air supply motor for transporting the ionized air in the reaction chamber to the garbage transfer station;

[0007] The terminal dust removal and deodorization system comprises: an air intake, a dust removal filter, a washing tower, a dosing tank, a dosing pump, and a deodorization fan. The air intake is arranged at the discharge port of the garbage transfer station. The dust removal filter is connected to the air intake through an air duct. The air inlet of the washing tower is connected to the dust removal filter through the deodorization fan. The deodorization fan is used to pump the exhaust gas passing through the dust removal filter into the washing tower. The dosing tank is connected to the washing tower through the dosing pump. The dosing pump is used to pump the liquid medicine in the dosing tank into the washing tower.

[0008] A filter screen is provided at the air outlet to filter particulate matter in the exhaust gas;

[0009] The amount of air flowing out of the garbage transfer station through the exhaust port is greater than the amount of air flowing in through the outlet, so that the internal air pressure of the garbage transfer station is maintained in the range of less than -0.02MPa and greater than -0.05MPa.

[0010] Preferably, a swirl folding plate is provided in the reaction chamber, and the swirl folding plate is used to increase the reaction time of the negative ions in the reaction chamber.

[0011] Preferably, the shell of the reaction chamber is made of 304 stainless steel plate.

[0012] Preferably, negative ion generators are provided at the air intake port and the air outlet.

[0013] Preferably, the air supply motor adopts an outer rotor motor direct-connected transmission.

[0014] Preferably, the washing tower is a two-stage horizontal washing tower, the first stage of the washing tower uses alkaline solution to remove NH3 and H2S components in the exhaust gas, and the last stage of the washing tower uses water washing to deodorize and remove excess alkaline solution.

[0015] Further preferably, the drug solution in the drug adding tank is NaOH.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0017] The dust reduction and deodorization system for a garbage transfer station provided by the present invention deodorizes the waste gas in the garbage transfer station by arranging an ion fresh air system, and reduces and deodorizes the waste gas at the discharge port located at the discharge, compression and transfer point by arranging a terminal dust removal and deodorization system, thereby achieving the technical effect of reducing and deodorizing the waste gas in the garbage transfer station, and arranging a filter screen for filtering particulate matter in the waste gas at the exhaust port in the terminal dust removal and deodorization system, thereby not only enhancing the dust removal effect of the terminal dust removal and deodorization system but also reducing the processing requirements of the washing tower, and by making the air volume flowing out of the garbage transfer station through the exhaust port greater than the air volume flowing in through the outlet, the internal air pressure of the garbage transfer station is maintained in a slightly negative pressure state of less than -0.02MPa and greater than -0.05MPa, thereby ensuring that the waste gas in the garbage transfer station does not diffuse outward. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a garbage transfer station installed with the present invention.

[0019] Among them: 100. Ion fresh air system; 101. Reaction chamber; 1011. Swirl folding plate; 102. Air supply device; 1021. Air supply pipe; 1022. Air supply motor; 103. Collecting device; 200. Terminal dust removal and deodorization system; 201. Exhaust port; 2011. Wind hood; 2012. Filter; 202. Dust filter; 2021. Air duct; 203. Washing tower; 2031. Circulation pump; 204. Dosing tank; 2041. Dosing pump; 205. Deodorization fan; 300. Unloading hall; 301. Air outlet; 302. Unloading vehicle; 303. Unloading port; 400. Transfer hall; 401. Air outlet; 402. Transfer vehicle. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] The up and down directions described in the present invention refer to Figure 1 The up and down directions in the present invention refer to the left and right directions. Figure 1 left and right direction in center.

[0022] like Figure 1As shown, the dust reduction and deodorization system for a garbage transfer station provided by the present invention comprises an ion fresh air system 100 and a terminal dust removal and deodorization system 200, wherein the ion fresh air system 100 comprises: a collecting device 103, a reaction chamber 101, a negative ion generator located in the reaction chamber 101, and an air supply device 102, wherein the collecting device 103 is connected to the reaction chamber 101, the collecting device 103 is used to collect air in the atmosphere into the reaction chamber 101, the negative ion generator is used to ionize the air entering the reaction chamber 101 to generate negative ions, and the negative ions react with the oxygen in the air to generate strong oxidizing substances - peroxyl free radicals, and the peroxyl free radicals can react with malodorous organic matter in the exhaust gas to completely decompose the malodorous substances. The negative ion generator is a prior art and will not be described in detail here. The air supply device 102 is connected to the air outlet 301 of the unloading hall 300 of the garbage transfer station and the air outlet 401 of the transfer hall 400. The air supply device 102 includes an air supply pipe 1021 and an air supply motor 1022. The air supply pipe 1021 has two groups, one group connects the reaction chamber 101 and the air outlet 301 of the unloading hall 300, and the other group connects the reaction chamber 101 and the air outlet 401 of the transfer hall 400. The air supply motor 1022 is used to transport the ionized air in the reaction chamber 101 to the unloading hall 300 and the transfer hall 400 of the garbage transfer station through the air supply pipe 1021; the terminal dust removal and deodorization system 200 includes: an exhaust port 201, a dust removal filter 202, a washing tower 203, a dosing tank 204, a dosing pump 2041, a deodorizing air The machine 205, the air outlet 201 is arranged at the discharge port 303 connecting the discharge hall 300 and the transfer hall 400 of the garbage transfer station, the air outlet 201 is provided with a wind cover 2011, and the wind cover 2011 is provided with a filter 2012, the filter 1012 is used to filter the particulate matter in the waste gas of the garbage transfer station, these particulate matter is also the source of some odors, the dust filter 202 is connected with the air outlet 201 through the air duct 2021, the dust filter 202 is mainly used to remove dust particles in the waste gas, the principle of the dust filter 202 is: when the dust particles in the air move with the inertia of the air flow, or move irregularly, or move under the action of some field force and hit an obstacle, they will be adsorbed by the gravitational force between the particles and the surface of the obstacle to make them stick to the obstacle The air inlet of the washing tower 203 is connected to the dust filter 202 through the deodorizing fan 205, and the deodorizing fan 205 is used to pump the exhaust gas passing through the dust filter 202 into the washing tower 203. The dosing tank 204 is connected to the washing tower 203 through the dosing pump 2041, and the dosing pump 2041 is used to pump the liquid medicine in the dosing tank 204 into the washing tower 203; the air volume flowing out of the garbage transfer station through the exhaust port 201 is greater than the air volume flowing in through the air outlet 301 and the air outlet 401, so that the internal air pressure of the unloading hall 300 and the transfer hall 400 of the garbage transfer station is maintained in the range of less than -0.02MPa and greater than -0.05MPa, so as to prevent the exhaust gas in the unloading hall 300 and the transfer hall 400 from spreading outward and affecting the surrounding residents.

[0023] like Figure 1 As shown, a swirl fold 1011 is provided in the reaction chamber 101, and the swirl fold 1011 increases the distance that the negative ions flow through the reaction chamber 101, which can increase the reaction time of the negative ions in the reaction chamber 101. The shell of the reaction chamber 101 is made of 304 stainless steel plate, which has a long service life and will not chemically react with the negative ions. The waste gas treatment process using the ion fresh air system 100 is energy-saving, convenient and efficient: through autonomous air supply and air induction, the air in the unloading hall 300 and the transfer hall 400 can be convected, circulated and deodorized, the ion generating section has low resistance, and the static pressure of the equipment fan is relatively low, which can minimize energy consumption and noise, greatly reduce the concentration of indoor odorous gases and inhibit the generation of harmful gases; of course, the air outlet 301 and the air outlet A small ion generator is set at 401 to further enhance the deodorizing effect of the ion fresh air system 100. Preferably, the air supply motor 1022 adopts an external rotor motor direct drive, and the fan structure and operation are stable, low noise, small size, light weight, beautiful appearance, easy maintenance, and simple on-site installation; preferably, the washing tower 203 is a two-stage horizontal washing tower, and the initial stage of the washing tower 203 uses alkali solution to remove NH3 and H2S components in the exhaust gas, and the final stage of the washing tower 203 uses water washing to deodorize and remove excess alkali solution, and is discharged through the exhaust pipe after meeting the standards. The circulating liquid after the reaction saturation at the final stage of the washing tower 203 is non-toxic and has no by-products, is easy for personnel to operate, and is convenient for maintenance and overhaul, has high deodorizing efficiency, and is safe and free of secondary pollution; further preferably, the liquid in the dosing tank 204 is NaOH.

[0024] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust removal and deodorization system for a garbage transfer station, comprising an ion fresh air system and a terminal dust removal and deodorization system, characterized in that: The ion fresh air system comprises: a collecting device, a reaction chamber, a negative ion generator located in the reaction chamber, and an air supply device, wherein the collecting device is connected with the reaction chamber, the collecting device is used to collect air in the atmosphere into the reaction chamber, a swirl fold plate is provided in the reaction chamber, the swirl fold plate is used to increase the reaction time of the negative ions in the reaction chamber, the negative ion generator is used to ionize the air and generate negative ions, the air supply device is connected with the air outlet of the unloading hall and the air outlet of the transfer hall of the garbage transfer station, the unloading hall is located above the transfer hall, the air supply device comprises an air supply pipe and an air supply motor for conveying the ionized air in the reaction chamber to the garbage transfer station; the air supply pipe has two groups, one group connects the reaction chamber with the air outlet of the unloading hall, and the other group connects the reaction chamber with the air outlet of the transfer hall, the air supply motor is used to convey the ionized air in the reaction chamber to the unloading hall and the transfer hall through the air supply pipe; The terminal dust removal and deodorization system comprises: an air intake, a dust removal filter, a washing tower, a dosing tank, a dosing pump, and a deodorizing fan. The air intake is arranged at the discharge port connecting the discharge hall and the transfer hall. A wind hood is arranged at the air intake, and a filter screen for filtering particulate matter in the exhaust gas is arranged on the wind hood. The dust removal filter is connected to the air intake through an air duct. The air inlet of the washing tower is connected to the dust removal filter through the deodorizing fan. The deodorizing fan is used to pump the exhaust gas passing through the dust removal filter to the In the washing tower, the air in the unloading hall and the transfer hall is convected and circulated for deodorization. The air volume flowing out of the garbage transfer station through the air exhaust port is greater than the air volume flowing in through the air outlet, so that the internal air pressure of the garbage transfer station is maintained within the range of less than -0.02MPa and greater than -0.05MPa. The dosing tank is connected to the washing tower through the dosing pump, and the dosing pump is used to pump the liquid medicine in the dosing tank into the washing tower; negative ion generators are provided at the air exhaust port and the air outlet; The washing tower is a two-stage horizontal washing tower. The first stage of the washing tower uses alkali solution to remove NH3 and H2S components in the exhaust gas, and the last stage of the washing tower uses water washing to deodorize and remove excess alkali solution.

2. The dust reduction and deodorization system for garbage transfer stations according to claim 1 is characterized in that: The shell of the reaction chamber is made of 304 stainless steel plate.

3. The dust reduction and deodorization system for garbage transfer stations according to claim 1 is characterized in that: The air supply motor adopts an outer rotor motor direct-connection transmission.

4. The dust reduction and deodorization system for a garbage transfer station according to any one of claims 1 to 3, characterized in that: The liquid medicine in the medicine adding tank is NaOH.

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