A wet garbage rapid reduction processing system and processing method

Abstract

The present invention discloses a wet garbage rapid reduction treatment system and treatment method. The system includes crushing equipment, pressing equipment, drying equipment, active air generator, blower, and filtering equipment; the outlet of the crushing equipment is connected to the inlet of the pressing equipment; the solid filter residue outlet of the pressing equipment is connected to the solid filter residue inlet of the drying equipment, and the filtrate outlet of the pressing equipment is connected to the filtrate inlet of the filtering equipment; the outlet of the active air generator is connected to the inlet of the blower; the outlet of the blower is connected to the drying equipment and the filtering equipment. The present invention utilizes an active air generator to generate highly active active oxygen under high-voltage discharge conditions; the solid filter residue or filtrate reacts with the active air in the drying equipment or the filtering equipment for a period of time, and the active oxygen can destroy the cell wall of the organic matter, and react with water to quickly generate highly oxidizing hydroxyl radicals, so that the organic matter is quickly oxidized and degraded, thereby greatly shortening the treatment time of organic garbage and not causing secondary pollution.

Description

Technical Field

[0001] The invention belongs to the technical field of wet garbage treatment, and relates to a wet garbage rapid reduction treatment system and a treatment method. Background Art

[0002] With the continuous implementation of garbage classification, the treatment methods of classified garbage have received more and more attention, among which the treatment methods of wet garbage are a research hotspot.

[0003] Wet garbage, also known as kitchen waste and organic waste, is a general term for perishable biological waste such as food waste, leftovers, expired food, melon peels and fruit cores, flowers and plants, and Chinese medicine residues. Wet garbage is mainly generated from residents' daily lives and food processing, catering services, and unit catering activities, including discarded vegetable leaves, leftovers, fruit peels, eggshells, tea residues, bones, animal viscera, fish scales, leaves, weeds, etc. Its main sources are family kitchens, restaurants, hotels, canteens, markets, and other industries related to food processing.

[0004] Wet garbage is rich in organic matter, high in water content, and easy to rot. Its properties and odor will have a bad impact on environmental hygiene, and it is easy to breed pathogenic microorganisms, mycotoxins and other harmful substances. If it is not handled properly, it will inevitably affect the city appearance, pollute the environment and water bodies, and endanger human health.

[0005] With the improvement of people's living standards, the amount of wet garbage discharged is increasing day by day. A large amount of wet garbage has brought serious pollution problems and caused huge waste. How to efficiently achieve the harmlessness and resource utilization of wet garbage is a technical problem that needs to be solved at present.

[0006] At present, the main methods for treating wet garbage are physical, chemical, biological, etc. The treatment technologies involved include landfill, incineration, composting, fermentation, etc. These traditional methods can realize the resource utilization of wet garbage to a certain extent, but they all have limitations.

[0007] Landfilling occupies and pollutes a large amount of land, and produces a large amount of leachate, malodorous gas and greenhouse gas. This method can only eliminate wet garbage, but cannot achieve the recycling and reuse of wet garbage. Therefore, the landfill rate of wet garbage shows a downward trend. Wet garbage has a high moisture content and low calorific value. The calorific value is low during incineration. At the same time, the incineration equipment has high requirements and needs to be equipped with flue gas treatment equipment. Therefore, incineration faces problems such as large investment, high operating costs, and long recovery cycle. The quality of compost fertilizer is not high, and at the same time, the cost of high-quality composting methods is high and difficult to promote. The fermentation investment is large, the cost of sludge treatment is high, the physical sorting or crushing is costly, the recovery rate is low, and the operation cycle is long, which limits the promotion of this method. Summary of the invention

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a rapid and efficient wet garbage reduction processing system and method, that is, a wet garbage rapid reduction processing system and method.

[0009] The objective of the present invention is achieved through the following technical solutions:

[0010] The present invention discloses a wet garbage rapid reduction processing system, which comprises a crushing device, a pressing device, a drying device, an active air generator, a blower, and a filtering device; the outlet of the crushing device is connected to the inlet of the pressing device; the solid filter residue outlet of the pressing device is connected to the solid filter residue inlet of the drying device through a solid conveying pipeline, and the filter residue is conveyed to the drying device for drying, and at the same time, the filtrate outlet of the pressing device is connected to the filtrate inlet of the filtering device through a liquid conveying pipeline, and the filtrate is conveyed to the filtering device for filtering; the outlet of the active air generator is connected to the inlet of the blower through a pipeline, and the generated active air is mixed with the outside air and then conveyed to the inlet of the blower; the blower conveys the mixed air of the active air and the outside air to the drying system and the filtering system respectively; the outlet of the blower is connected to the drying device through a pipeline, and the outlet of the blower is also connected to the filtering device through a pipeline;

[0011] The top of the drying device is provided with a solid filter residue inlet, and the bottom is provided with a dried waste residue outlet; the lower part of one side of the drying device is provided with a mixed air inlet for active air and external air, and the top of the other side is provided with a water vapor outlet; the outlet of the blower is connected to the mixed air inlet of active air and external air of the drying device through a pipeline; a stirrer is provided inside the drying device;

[0012] The solid filter residue becomes harmless waste residue after drying and is transported out for treatment; the filtering device is provided with a filtrate inlet and a clear liquid outlet, and is also provided with an air pipeline for aeration, the air pipeline for aeration is connected to the blower outlet, and the mixed air of active air and external air is sent into the filtering device; the filtrate becomes clear liquid after being filtered by the filtering device, and is discharged through the pipeline after meeting the standards;

[0013] The active air generator comprises a rectangular shell, on which an air inlet is arranged at the top and an air outlet is arranged at the bottom; a metal filter is arranged at the air inlet; inside the rectangular shell, a fan is arranged below the air inlet, and the fan is fixed on the shell; below the fan is a cylindrical discharge chamber; the lower end of the discharge chamber is connected to the cylindrical electromagnetic induction chamber; the lower part of the discharge chamber is reduced; the cylinder diameter of the electromagnetic induction chamber is smaller than the cylinder diameter of the discharge chamber; inside the discharge chamber, a discharge needle is arranged at the upper part, and a ring-shaped metal coil is arranged at the lower part; an electromagnetic coil is wound around the outside of the electromagnetic induction chamber; the tails of the discharge needle and the ring-shaped metal coil both cross the cylindrical wall of the discharge chamber and are connected to a high-voltage DC power supply; the discharge needle is connected to the negative pole of the high-voltage DC power supply, and the ring-shaped metal coil is connected to the positive pole of the high-voltage DC power supply.

[0014] Furthermore, there is a cylindrical discharge chamber below the fan; the lower end of the discharge chamber is connected to a cylindrical electromagnetic induction chamber; the diameter of the lower part of the discharge chamber is reduced; the cylindrical diameter of the electromagnetic induction chamber is smaller than the cylindrical diameter of the discharge chamber; inside the cylinder of the discharge chamber, a discharge needle is provided at the upper part, and a ring-shaped metal coil is provided at the lower part; an electromagnetic coil is wound around the outside of the cylinder of the electromagnetic induction chamber.

[0015] Furthermore, the material of the discharge chamber is ABS or polyvinyl chloride; the material of the electromagnetic induction chamber is copper, aluminum or titanium. The output voltage of the high-voltage DC power supply of the active air generator is DC5000V.

[0016] The active air generator ionizes the air under high-voltage discharge conditions, charges the air under the action of a magnetic field, and generates highly active active air. The working principle of the active air generator: When the active air generator (generator) is working, the fan runs to introduce outside air into the discharge chamber in the generator; the air is ionized near the discharge needle in the discharge chamber; after the air enters the electromagnetic induction chamber, the charged particles in the ionized air are resonantly excited by the electromagnetic field of the electromagnetic coil; the charged particles resonantly excited by the electromagnetic field of the electromagnetic coil enter the outer orbit of the oxygen molecule, forming highly active active oxygen.

[0017] Furthermore, the drying equipment includes a rectangular box body, with a solid filter residue inlet (feed hopper) on the top of the box body; a transversely arranged rotatable stirring shaft is installed inside the box body through a bearing; a plurality of stirring blades are provided on the stirring shaft; an air inlet for mixing active air and outside air is provided near the bottom on one side of the box body; a water vapor outlet is provided near the top on the other side of the box body; and a dried waste residue outlet (discharge port) is provided near the bottom on the other side of the box body.

[0018] The working principle of the drying equipment is as follows: the solid filter residue after squeezing enters the interior of the drying equipment box from the top feed hopper (solid filter residue inlet), and the mixed gas of active air and external air enters the drying equipment from the air inlet (mixed air inlet of active air and external air) through the blower. The solid filter residue and the active air react in the drying equipment after a period of stirring. The active air can destroy the cell wall of the organic matter in the filter residue and oxidize the organic matter in the filter residue into water, carbon dioxide or minerals, which is conducive to further dehydration and drying of the filter residue. The water vapor is discharged through the exhaust port (water vapor outlet). Finally, the dried solid waste residue is obtained and removed from the drying equipment through the discharge port (waste residue outlet) for external transportation.

[0019] Furthermore, the blower has a heating function or is connected to a heating device.

[0020] Furthermore, the filtering equipment is an MBR filter (i.e., an aerated biological filter, a membrane bioreactor); an air pipeline for aeration is arranged at the bottom of the MBR filter of the filtering equipment, and the air pipeline for aeration is connected to the outlet of the blower.

[0021] Furthermore, the crushing device is a crusher with gears; the crushing device includes coarse crushing and wall-breaking crushing. The number of the crushing devices can be one or more.

[0022] Furthermore, the pressing equipment is a screw press, and the pressing component of the pressing equipment is a screw pressing component.

[0023] The present invention provides a method for rapidly reducing the amount of wet garbage using the wet garbage rapid reduction processing system, comprising the following steps:

[0024] (1) Crushing step: After the wet garbage is sorted and removed, it is crushed using crushing equipment.

[0025] Preferably, the crushing step includes coarse crushing and wall-breaking crushing of the wet garbage.

[0026] (ii) Pressing step: The crushed wet garbage is pressed by a pressing device to obtain solid residue and filtrate.

[0027] (III) Active air generation step: The active air generator generates highly active active oxygen through high-voltage discharge. The active air containing active oxygen is mixed with the outside air and then introduced into the drying equipment and the filtering equipment respectively through the blower.

[0028] Furthermore, in the active air generating step, the output voltage of the high voltage DC power supply of the active air generator is DC5000V.

[0029] Furthermore, the heating temperature of the blower is 30-150° C.; the higher the temperature, the more conducive it is to the removal of moisture and the better the drying effect, but the energy consumption also increases, so it is necessary to select a suitable temperature according to actual conditions.

[0030] (IV) Drying step: After a period of stirring reaction between the solid filter residue and the active air in the drying equipment, it is oxidized, degraded and deodorized, and dehydrated and dried, and finally harmless solid waste residue is obtained and transported out for treatment.

[0031] Furthermore, the temperature of the drying step is controlled at 60-80°C.

[0032] The drying step oxidizes the organic matter in the filter residue into water, carbon dioxide or minerals.

[0033] (V) Filtration step: After the filtrate after pressing and the active air react in the MBR filter tank of the filtration equipment, it is filtered through the MBR filter tank, and the final clear liquid can meet the discharge standards.

[0034] The filtration step oxidizes the organic matter in the filtrate into water, carbon dioxide or minerals.

[0035] Beneficial effects of the present invention:

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] 1. Through crushing, pressing and other processes, the wet garbage is separated into solid and liquid to obtain filter residue and filtrate. The filter residue is dried to obtain harmless residue for transportation, and the filtrate is filtered and finally discharged in compliance with the standards. Separating the wet garbage into solid and liquid can improve the decomposition efficiency of organic matter and is conducive to the resource utilization of wet garbage.

[0038] 2. The present invention can generate highly active active oxygen under high-voltage discharge conditions by introducing active air generating equipment. The solid filter residue and active air react in the drying equipment after a period of stirring, and the filtrate and active air react in the filtering equipment after a period of time. Active oxygen can destroy the cell wall of organic matter, making the organic matter easy to be oxidized and degraded. At the same time, active oxygen reacts with water to quickly generate highly oxidizing hydroxyl free radicals. Hydroxyl free radicals are the strongest chemical oxides that can instantly complete the dehydrogenation reaction and hydrolysis of organic matter, and can non-selectively oxidize organic matter into carbon dioxide, water or mineral salts. With this technology, the processing time of organic waste can be greatly shortened without causing secondary pollution.

[0039] 3. The present invention can realize the continuous treatment of wet garbage through the scientific design of equipment and process. No toxic and harmful substances are produced in the whole treatment process, the equipment failure rate is low, and the garbage is treated efficiently and safely.

[0040] 4. Since the organic matter in wet garbage is eventually oxidized into carbon dioxide, water or mineral salts, the spread of odor in wet garbage is effectively avoided.

[0041] 5. The treatment of filter residue and filtrate is carried out at a lower temperature. Compared with traditional treatment methods, it consumes less energy and greatly reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A flowchart of a method for rapidly reducing the amount of wet garbage according to the present invention;

[0043] Figure 2 It is a structural schematic diagram (equipment composition diagram) of a wet garbage rapid reduction processing system of the present invention;

[0044] Figure 3 It is a structural schematic diagram of the active air generator in the present invention;

[0045] Figure 4 It is a schematic diagram of the structure of the drying equipment in the present invention.

[0046] Numbers in the figure: 1, wet garbage box 2, crushing equipment 3, pressing equipment 4, drying equipment 5, waste residue 6, residue transport vehicle 7, active air generator 8 blower 9, MBR filter 10, discharge pipeline 11, air inlet 12, fan 13, discharge chamber 14, discharge needle 15, annular metal coil 16, electromagnetic induction chamber 17, electromagnetic coil 18, air outlet 19, rectangular shell 20, air pipeline for aeration 21, mixed air inlet of active air and outside air 22, stirring shaft 23, stirring blade 24, solid filter residue inlet 25, water vapor outlet 26, rectangular box 27, waste residue outlet after drying DETAILED DESCRIPTION

[0047] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0048] Example 1

[0049] like Figure 1 , Figure 2As shown, the present invention is a wet garbage rapid reduction treatment system, which includes a crushing device 2, a pressing device 3, a drying device 4, an active air generator 7, a blower 8, and a filtering device (MBR filter tank 9); the outlet of the crushing device 2 is connected to the inlet of the pressing device 3; the solid filter residue outlet of the pressing device 3 is connected to the solid filter residue inlet of the drying device 4 through a solid conveying pipeline, and the filter residue is conveyed to the drying device 4 for drying. At the same time, the filtrate outlet of the pressing device 3 is connected to the filtrate inlet of the filtering device (MBR filter tank 9) through a liquid conveying pipeline, and the filtrate is conveyed to the filtering device (MBR filter tank 9) for filtration; the outlet of the active air generator 7 is connected to the inlet of the blower 8 through a pipeline, and the generated active air is mixed with the outside air and then conveyed to the inlet of the blower 8; the blower 8 has a heating function; the blower 8 conveys the mixed air of the active air and the outside air to the drying system (drying device 4) and the filtering system (MBR filter tank 9) respectively; the top of the drying device 4 is provided with a solid filter residue The bottom of the drying device 4 is provided with an inlet 24 for mixed air of active air and outside air, and an outlet 27 for dried waste residue after drying; the lower part of the side of the drying device 4 is provided with an inlet 21 for mixed air of active air and outside air, and a water vapor outlet 25 is provided at the top; the outlet of the blower 8 is connected to the inlet 21 for mixed air of active air and outside air of the drying device 4 through a pipeline; the solid filter residue becomes harmless waste residue 5 after drying, and is transported out for treatment by a slag transport vehicle 6; the filtering device (MBR filter tank 9) is provided with a filtrate inlet and a clear liquid outlet, and is also provided with aeration The air pipeline 20 (aeration pipeline) is connected to the outlet of the blower 8 to send the mixed air of the active air and the outside air into the filtering device (MBR filter tank 9); the air pipeline 20 for aeration is extended straight into the bottom of the MBR filter tank 9, bent at 90 degrees and laid flat on the bottom of the MBR filter tank 9, and a plurality of aeration holes are provided on the aeration pipeline laid flat on the bottom of the MBR filter tank 9; the filtrate is filtered by the filtering device (MBR filter tank 9) and becomes a clear liquid, which is discharged through the discharge pipeline 10 after meeting the standards.

[0050] The crushing device 2 is a crusher with gears (gear crusher); there are two crushing devices 2, one is a coarse crushing device, and the other is a wall-breaking crushing device.

[0051] The pressing device 3 is a screw press, and the pressing component of the pressing device 3 is a screw pressing component.

[0052] like Figure 3As shown, the active air generator 7 comprises a rectangular shell 19, on which an air inlet 11 is provided at the top and an air outlet 18 is provided at the bottom; a metal filter is provided at the air inlet; inside the rectangular shell 19, a fan 12 is provided below the air inlet, and the fan is fixed on the shell; below the fan is a cylindrical discharge chamber 13; the lower end of the discharge chamber 13 is connected to a cylindrical electromagnetic induction chamber 16; the lower diameter of the discharge chamber 13 is reduced; the cylinder diameter of the electromagnetic induction chamber 16 is smaller than that of the discharge chamber 13; inside the cylinder of the discharge chamber 13, a discharge needle 14 is provided at the upper part, and a ring-shaped metal coil 15 is provided at the lower part; an electromagnetic coil 17 is wound around the outside of the cylinder of the electromagnetic induction chamber 16. The cylinder of the discharge chamber 13 is made of ABS or polyvinyl chloride; the cylinder of the electromagnetic induction chamber 16 is made of copper, aluminum or titanium. The tails of the discharge needle 14 and the annular metal coil 15 both cross the cylindrical wall of the discharge chamber 13 and are connected to a high-voltage DC power supply; the discharge needle 14 is connected to the negative pole of the high-voltage DC power supply, and the annular metal coil 15 is connected to the positive pole of the high-voltage DC power supply. The output voltage of the high-voltage DC power supply of the active air generator 7 is DC5000V.

[0053] The active air generator 7 ionizes the air under high-voltage discharge conditions, charges the air under the action of the magnetic field, and generates highly active active air. The working principle of the active air generator 7: When the active air generator 7 (generator) is working, the fan runs to introduce the outside air into the discharge chamber in the generator; the air is ionized near the discharge needle in the discharge chamber; after the air enters the electromagnetic induction chamber, the charged particles in the ionized air are resonantly excited by the electromagnetic field of the electromagnetic coil; the charged particles resonantly excited by the electromagnetic field of the electromagnetic coil enter the outer orbit of the oxygen molecule, forming highly active active oxygen.

[0054] like Figure 4 As shown, the drying equipment 4 includes a rectangular box 26, with a solid filter residue inlet 24 (feed hopper) provided on the top of the box; a horizontally arranged rotatable stirring shaft 22 is installed inside the box through a bearing; a plurality of stirring paddles are vertically connected to the stirring shaft 22, and each stirring paddle is provided with a stirring blade 23; a mixed air inlet 21 for active air and outside air is provided on one side of the box near the bottom; a water vapor outlet 25 is provided on the other side of the box near the top; a dried waste residue outlet 27 (discharge port) is provided on the other side of the box near the bottom.

[0055] The working principle of the drying equipment 4 is as follows: the solid filter residue after squeezing enters the interior of the drying equipment box from the top feed hopper (solid filter residue inlet 24), and the mixed gas of active air and external air enters the drying equipment 4 from the air inlet (mixed air inlet 21 of active air and external air) through the blower 8. The solid filter residue and the active air react in the drying equipment 4 after a period of stirring. The active air can destroy the cell wall of the organic matter in the filter residue and oxidize the organic matter in the filter residue into water, carbon dioxide or minerals, which is conducive to further dehydration and drying of the filter residue. The water vapor is discharged through the exhaust port (water vapor outlet 25). Finally, the dried solid waste residue is obtained and removed from the drying equipment 4 through the discharge port (waste residue outlet 27) for external treatment.

[0056] Example 2

[0057] The present invention provides a method for rapidly reducing the amount of wet garbage using the wet garbage rapid reduction processing system described in Example 1, comprising the following steps:

[0058] (i) Crushing step: After the wet garbage is sorted and removed from the garbage, it is crushed using crushing equipment 2 (a crusher with gears).

[0059] The crushing step includes coarse crushing and wall-breaking crushing of the wet garbage.

[0060] (ii) Pressing step: The crushed wet garbage is pressed by a pressing device (screw press) to obtain solid residue and filtrate.

[0061] (III) Active air generation step: The active air generator 7 generates highly active active oxygen through high-voltage discharge. The active air containing active oxygen is mixed with the outside air and then introduced into the drying equipment 4 and the filtering equipment (MBR filter tank 9) respectively through the blower 8.

[0062] In the active air generating step, the output voltage of the high voltage DC power supply of the active air generator 7 is DC5000V.

[0063] The blower 8 has a heating function or is connected to a heating device. The heating temperature of the blower 8 is 120°C.

[0064] (IV) Drying step: After a period of stirring reaction between the solid filter residue and the active air in the drying equipment 4, the solid filter residue is oxidized, degraded, deodorized, and dehydrated to obtain solid waste residue, which is then transported out for treatment.

[0065] The temperature of the drying step is controlled at 60-80°C.

[0066] The drying step oxidizes the organic matter in the filter residue into water, carbon dioxide or minerals. The specific mechanism is:

[0067] In the drying device 4, the solid filter residue and the active air react after a period of stirring in the drying device 4, and two effects occur: (1) the active air destroys the cell walls of the organic matter in the filter residue, making the organic matter easy to be oxidized and degraded; (2) the active oxygen reacts with a small amount of water in the filter residue to quickly generate highly oxidizing hydroxyl radicals. The hydroxyl free radical is the strongest chemical oxide that can instantly complete the dehydrogenation reaction and hydrolysis of organic matter, oxidizing the organic matter in the filter residue into water, carbon dioxide or minerals; thereby, the solid filter residue is oxidized, degraded and deodorized.

[0068] (V) Filtration step: The filtrate after squeezing reacts with active air in the MBR filter tank 9, and after being filtered through the MBR filter tank 9 (aerated biological filter tank), the final clear liquid can meet the discharge standards.

[0069] The filtration step oxidizes the organic matter in the filtrate into water, carbon dioxide or minerals. The specific mechanism is:

[0070] In the filtering device (MBR filter tank 9), (1) the active air destroys the cell walls of the organic matter in the filtrate, making the organic matter easy to be oxidized and degraded; (2) the active oxygen reacts with the large amount of water in the filtrate to quickly generate hydroxyl free radicals with extremely strong oxidizing properties. Hydroxyl free radicals are the strongest chemical oxidants that can instantly complete the dehydrogenation reaction and hydrolysis of organic matter, and can indiscriminately oxidize the organic matter in the filtrate into carbon dioxide, water or mineral salts. In this way, the filtrate is oxidized and degraded to deodorize.

[0071] MBR filter 9 is MBR membrane bioreactor, which is a new wastewater treatment system that combines membrane separation technology with biological treatment technology. It mainly uses the membrane separation equipment immersed in the aerobic biological pool to intercept the activated sludge and macromolecular organic matter in the tank. MBR filter 9 operates according to the conditions shown in the following table:

[0072] project unit Operating conditions MLSS mg / L 7,000～18,000 Sludge viscosity MPa*s Below 250 DO mg / L 1.0 or above pH - 6～8 Water temperature ℃ 15～40 Membrane filtration flow rate <![CDATA[m 3 / m 2 / d]]> 0.75 or less

[0073] Wherein, MLSS is the sludge concentration of activated sludge in the aeration tank. DO is dissolved oxygen.

[0074] Example 3 Application Example

[0075] Using wet garbage from a vegetable market (including vegetable leaves, bean dregs, wild rice stems, etc.) as raw materials, using the wet garbage rapid reduction treatment system described in Example 1, and treating the filtrate obtained after the (i) crushing step and (ii) pressing step in the wet garbage rapid reduction treatment method described in Example 2, the filtrate is treated in the MBR filter tank according to the method described in the (v) filtration step under the above operating conditions for 20 hours to obtain a clear liquid. The test data of the clear liquid sample is as follows:

[0076] Test samples unit Test results Chemical oxygen demand mg / L 465 Biochemical oxygen demand mg / L 142 Total Nitrogen mg / L 42.7 Total Phosphorus mg / L 1.21 Suspended Matter mg / L 189 Total dissolved solids mg / L 986 Animal and vegetable oils mg / L 0.81 Chroma Spend 7 pH / 7.58

[0077] Comparative Example (Comparison between the drying treatment in the present invention and the conventional biochemical treatment)

[0078] Using wet garbage from a vegetable market (including vegetable leaves, bean dregs, wild rice stems, etc.) as raw materials, the wet garbage rapid reduction treatment system described in the above embodiment 1 is used, and the filter residue (with a moisture content of about 80%) is obtained after pre-treatment according to the (i) crushing step and (ii) pressing step of the wet garbage rapid reduction treatment method described in the above embodiment 2.

[0079] 100 kg of the above-mentioned filter residue was added into the drying equipment of the wet garbage rapid reduction treatment system of the present invention, and after running at 60° C. for 24 hours, a dehydrated waste residue was obtained.

[0080] 100 kg of the same filter residue was added to a conventional biochemical treatment device (microbial aerobic fermentation tank) and operated at 60° C. for 72 h to obtain fermented waste.

[0081] The results of the above two processes are as follows:

[0082] project Drying equipment of the system of the present invention Traditional biochemical treatment equipment Processing time 36h 72h Filter residue weight 100kg 100kg Waste weight 24kg 30kg Reduction rate 76％ 70％ Residue moisture content 80％ 80％ Waste residue moisture content 17％ 33％ Processing temperature 70℃ 80℃

[0083] The above comparative experimental results show that the drying treatment in the present invention utilizes active air to destroy the cell walls of organic matter in the filter residue, which is beneficial to the removal of cell water and further reduces the moisture content of the waste residue. At the same time, active air can oxidize the organic matter in the filter residue into water, carbon dioxide or minerals, and the degree of reduction is obvious. Compared with the traditional biochemical method, since the moisture in the filter residue is easier to remove, the processing time is greatly shortened, the processing temperature is also reduced, and the overall energy consumption is lower.

Claims

1. A wet garbage rapid reduction processing system, characterized in that: It includes a crushing device, a pressing device, a drying device, an active air generator, a blower, and a filtering device; the outlet of the crushing device is connected to the inlet of the pressing device; the solid filter residue outlet of the pressing device is connected to the solid filter residue inlet of the drying device through a solid conveying pipeline, and the filtrate outlet of the pressing device is connected to the filtrate inlet of the filtering device through a liquid conveying pipeline; the outlet of the active air generator is connected to the inlet of the blower through a pipeline; the outlet of the blower is connected to the drying device through a pipeline, and the outlet of the blower is also connected to the filtering device through a pipeline; The top of the drying device is provided with a solid filter residue inlet, and the bottom is provided with a dried waste residue outlet; the lower part of one side of the drying device is provided with a mixed air inlet for active air and external air, and the top of the other side is provided with a water vapor outlet; the outlet of the blower is connected to the mixed air inlet of active air and external air of the drying device through a pipeline; a stirrer is provided inside the drying device; The filtering device is provided with a filtrate inlet and a clear liquid outlet, and is also provided with an air pipeline for aeration; the air pipeline for aeration is connected to the blower outlet; The active air generator comprises a rectangular shell, on which an air inlet is arranged at the top and an air outlet is arranged at the bottom; a metal filter is arranged at the air inlet; inside the rectangular shell, a fan is arranged below the air inlet, and the fan is fixed on the shell; below the fan is a cylindrical discharge chamber; the lower end of the discharge chamber is connected to the cylindrical electromagnetic induction chamber; the lower part of the discharge chamber is reduced; the cylinder diameter of the electromagnetic induction chamber is smaller than the cylinder diameter of the discharge chamber; inside the discharge chamber, a discharge needle is arranged at the upper part and a ring-shaped metal coil is arranged at the lower part; an electromagnetic coil is wound around the outside of the electromagnetic induction chamber; the tails of the discharge needle and the ring-shaped metal coil both cross the cylindrical wall of the discharge chamber and are connected to a high-voltage DC power supply; the discharge needle is connected to the negative pole of the high-voltage DC power supply, and the ring-shaped metal coil is connected to the positive pole of the high-voltage DC power supply; The material of the discharge chamber is ABS or polyvinyl chloride; the material of the electromagnetic induction chamber is copper, aluminum or titanium; the output voltage of the high-voltage DC power supply of the active air generator is DC5000V; The drying equipment comprises a rectangular box, the top of which is provided with a solid filter residue inlet; a horizontally arranged rotatable stirring shaft is installed inside the box through a bearing; a plurality of stirring blades are arranged on the stirring shaft; a mixed air inlet for active air and outside air is arranged near the bottom on one side of the box; a water vapor outlet is arranged near the top on the other side of the box; and a dried waste residue outlet is arranged near the bottom on the other side of the box; The blower has a heating function or is connected to a heating device; The filtering device is an MBR filter tank; an air pipeline for aeration is arranged at the bottom of the MBR filter tank.

2. The wet garbage rapid reduction processing system according to claim 1, characterized in that: The crushing equipment is a crusher with gears; the crushing equipment includes coarse crushing and wall-breaking crushing; the number of the crushing equipment is one or more.

3. The wet garbage rapid reduction processing system according to claim 1, characterized in that: The pressing equipment is a screw press, and the pressing component of the pressing equipment is a screw pressing component.

4. A method for rapidly reducing the amount of wet garbage using the wet garbage rapid reduction processing system according to any one of claims 1 to 3, characterized in that: The steps include: (1) Crushing step: After the wet garbage is sorted and removed, it is crushed using crushing equipment; (ii) Squeezing step: the crushed wet garbage is squeezed by a squeezing device to obtain solid residue and filtrate; (III) Active air generation step: The active air generator generates highly active active oxygen through high-voltage discharge. The active air containing active oxygen is mixed with the outside air and then introduced into the drying equipment and the filtering equipment respectively through the blower; (iv) Drying step: After a period of stirring reaction between the solid filter residue and the active air in the drying equipment, the solid filter residue is oxidized, deodorized, and dehydrated to obtain harmless solid waste residue, which is then transported out for treatment; (V) Filtration step: After the filtrate after pressing and the active air react in the MBR filter tank of the filtration equipment, it is filtered through the MBR filter tank, and the final clear liquid is discharged after meeting the standards.

5. The wet garbage rapid reduction method according to claim 4, characterized in that: The crushing step includes coarse crushing and wall-breaking crushing of the wet garbage; The heating temperature of the blower is 30-150°C; The temperature of the drying step is controlled at 60-80°C.

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