Organic waste composite dewatering system and dewatering method

Abstract

The application discloses an organic waste composite dehydration system and a dehydration method, which comprise a physical dehydration device, a material crushing device and a biological dehydration device, the material crushing device is connected and installed at the rear end of the physical dehydration device and the front end of the biological dehydration device, and the physical dehydration device comprises an ultrahigh-pressure stacked box dehydration device or an ultrahigh-pressure stacked belt dehydration device. The application can meet the environmental protection treatment and resource utilization demand of organic waste in actual production, realizes the integration of mechanical physical dehydration and biological fermentation dehydration, and can efficiently and low-costly directly and deeply dehydrate the organic waste with moisture content of about 80% or even higher to below 40% without depending on other organic auxiliary materials or greatly reducing the dependence on other organic auxiliary materials, so that the index requirement of resource utilization is met, the treatment cost of social organic waste is reduced, and the improvement of the environmental protection treatment and resource utilization level of social organic waste is promoted.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of organic waste composite dewatering, and particularly relates to an organic waste composite dewatering system and a dewatering method. BACKGROUND

[0002] According to the data published by relevant departments, nearly 6 billion tons of various organic wastes are generated in the production and life of the whole society in China every year, and the moisture content of most of them is above 70% to 80%. The solid substances in the organic wastes basically have resource utilization value, so it is crucial to efficiently and at low cost reduce the moisture content of the organic wastes for resource utilization, waste-to-resource and waste-to-use.

[0003] In production practice, the commonly used organic waste dewatering technologies and equipment include belt filter presses, plate-and-frame filter presses, screw presses, centrifuges, vacuum suction filters and the like based on mechanical and physical principles, and tank-type fermentation machines and tower-type fermentation machines for biological fermentation dewatering. The efficiency limit of the former is generally to reduce the moisture content of the organic wastes from about 80% to about 60%, which still cannot meet the requirement of resource utilization, but it is very difficult to continue to reduce the moisture content and the cost is greatly increased. The latter can reduce the moisture content of the organic wastes from about 60% to below 40%, but a large proportion of auxiliary materials, especially municipal sludge and other organic wastes with relatively low nutrient content, need to be added to adjust the carbon-nitrogen ratio for normal fermentation, resulting in a significant increase in treatment cost. Moreover, there is no integrated deep dewatering equipment with mechanical and physical dewatering and biological fermentation dewatering on the market, so most of the organic wastes, especially municipal sludge and other organic wastes with high moisture content and relatively low nutrient content, cannot be well treated and utilized.

[0004] Based on the demand for environmental protection and resource utilization of organic wastes in real production, an integrated equipment combining mechanical and physical dewatering with biological fermentation dewatering is developed, which can efficiently and at low cost directly dewater the organic wastes with a moisture content of about 80% or even higher to below 40% without relying on other organic auxiliary materials or greatly reducing the reliance on other organic auxiliary materials, so as to meet the index requirement of resource utilization and greatly promote the level of environmental protection and resource utilization of organic wastes. SUMMARY

[0005] The present application aims to provide an organic waste composite dewatering system to solve the problem of directly deep dewatering of organic wastes to below 40% for better resource utilization.

[0006] The objective of this invention and the technical problem it solves are achieved through the following technical solution. According to this invention, an organic waste composite dewatering system comprises:

[0007] Physical dehydration devices, material crushing devices, and biological dehydration devices;

[0008] The material crushing device is connected and installed at the rear end of the physical dehydration device and at the front end of the biological dehydration device;

[0009] The physical dehydration device includes: an ultra-high pressure stacked box-type dehydration device or an ultra-high pressure stacked belt-type dehydration device;

[0010] The ultra-high pressure stacked box-type dewatering device includes: a box-type material feeder, a material feeder / unloader, filter cloth, a filter chamber, a filter chamber lifting hydraulic press, a box-type filter press hydraulic press, and a box-type filter press hydraulic station;

[0011] The box-type fabric feeder is installed at the front end of the fabric feeder / unloader; the fabric feeder / unloader is installed above the side of the filter press chamber, and the filter cloth is wound around the fabric feeder / unloader; the fabric feeder / unloader is installed above the side of the filter press chamber; the filter chamber lifting hydraulic press is installed below the filter press chamber; the box-type filter press hydraulic press is installed above the filter press chamber; the box-type filter press hydraulic station is connected to the filter chamber lifting hydraulic press and the box-type filter press hydraulic press via oil pipes.

[0012] The ultra-high pressure laminated belt dewatering device includes: a belt feeding machine, a filter belt, a filter belt traction machine, a belt filter press hydraulic press, and a belt filter press hydraulic station;

[0013] The belt feeder is installed at the front end of the filter belt traction machine; the filter belt is wound around the filter belt traction machine and passes through the belt filter press hydraulic press; the belt filter press hydraulic press is connected to the belt filter press hydraulic station through hydraulic oil pipes.

[0014] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0015] In one embodiment of the present invention, the biological dehydration device includes one or more of the following: an air-permeable fermentation bag, an air-permeable fermentation cylinder, or an air-permeable fermentation tray.

[0016] In one embodiment of the present invention, the material crushing device includes one or more of a chain crusher, a hammer / blade crusher, or a toothed shredder.

[0017] In one embodiment of the present invention, it further includes:

[0018] Buffer feeding device;

[0019] The buffer feeding device includes: a buffer belt conveyor and a screw conveyor feeder;

[0020] The buffer belt conveyor is connected and installed at the rear end of the physical dewatering device, and the screw conveyor feeder is connected and installed at the rear end of the buffer belt conveyor and the front end of the material crushing device.

[0021] In one embodiment of the present invention, it further includes:

[0022] Auxiliary ventilation device;

[0023] The auxiliary ventilation device includes: a ventilation tray and / or a ventilation pad;

[0024] The breathable tray is placed below the breathable fermentation bag, the breathable fermentation cylinder, or the breathable fermentation tray, and the breathable pad is placed below or between the breathable fermentation bag.

[0025] In one embodiment of the present invention, it further includes:

[0026] Buffer unloading device;

[0027] The buffer unloading device includes: a collection bin, an unloader, and a pressure-relief dust collection bag;

[0028] The material collection bin is connected and installed at the rear end of the material crushing device; the unloader is connected and installed at the lower end of the material collection bin; and the pressure relief dust removal bag is connected and installed on the material collection bin.

[0029] In one embodiment of the present invention, a material weighing device is also included; the material weighing device is connected to the rear end of the material crushing device and the front end of the biological dehydration device, or connected to the rear end of the buffer unloading device and the front end of the biological dehydration device.

[0030] This invention discloses a dehydration method for a composite dehydration system for organic waste, which includes the following steps:

[0031] S1 Physical Dewatering of Materials: The physical dewatering device is started, and the dewatered material is laid and wrapped on the filter belt by the belt feeder and directly pulled and transported to the belt filter press by the filter belt traction machine for ultra-high pressure filtration and dewatering. Alternatively, the dewatered material is laid and wrapped on the filter cloth by the box feeder and the feeder / unloader, and the material layer wrapped on the filter cloth is folded into multiple layers by the feeder / unloader and placed into the filter chamber. The box filter press performs ultra-high pressure filtration and dewatering on the multiple layers of dewatered material in the filter chamber. The belt filter press or the box filter press dewaters the dewatered material into flakes with a moisture content of 55% to 40%.

[0032] S2 Material Piece Crushing: Pieces with a moisture content of 55% to 40% are unloaded from the filter cloth or the filter belt by the cloth / unloading machine or the filter belt traction machine, and crushed into powder or / and small granules and small flakes by the material crushing device;

[0033] S3 biological dehydration: Powdered or / and small granular or flake organic materials with a moisture content of 55% to 40% are loaded into the biological dehydration device for 2 to 20 days of aerobic biological fermentation. The material is decomposed by microorganisms, generating heat to raise the temperature to above 65°C, evaporating the moisture and dehydrating it into materials with a moisture content of less than 40%.

[0034] In one embodiment of the present invention, in the dehydration method of the aforementioned organic waste composite dehydration system, organic fiber auxiliary materials and / or plant nutrient macro-, micro- and micro-element materials are added to the dehydrated material before the feeding machine and / or the feeding / unloading machine in S1 are feeding the material.

[0035] The material crushing device in S2 crushes material flakes with a moisture content of 55% to 40% into powder with a particle size of more than 5 mm or small granules with a particle size of less than 10 mm, and small flakes with a flake size of less than 50 mm.

[0036] The material crushing device in S2 adds organic fiber auxiliary materials and / or plant nutrient macro- and micro-elements before crushing material flakes with a moisture content of 55% to 40%.

[0037] Before fermentation, organic fiber adjuvants and / or plant nutrient macro- and micronutrient materials are added and stirred into the biological dehydration device. The material in S3 is crushed into small particles or / and powder with a particle size of less than 10 mm and has a moisture content of 55% to 40%.

[0038] Compared with existing technologies, this invention has significant advantages and beneficial effects. Through the above technical solution, the organic waste composite dewatering system and dewatering method provided by this invention have at least the following advantages and beneficial effects:

[0039] It can meet the needs of environmental protection and resource utilization of organic waste in real production, and realize the integration of mechanical physical dehydration and biological fermentation dehydration. Without relying on other organic auxiliary materials or significantly reducing the reliance on other organic auxiliary materials, it can efficiently and cost-effectively dehydrate organic waste with a moisture content of about 80% or even higher to a moisture content of less than 40%, meet the requirements of resource utilization, reduce the treatment cost of organic waste in society, and greatly promote the improvement of the level of environmental protection and resource utilization of organic waste in society.

[0040] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in this invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a front view schematic diagram of the structure of an embodiment of the organic waste composite dehydration system provided by the present invention;

[0043] Figure 2 This is a front view schematic diagram of the structure of Embodiment 2 of the organic waste composite dehydration system provided by the present invention;

[0044] Figure 3 This is a front view schematic diagram of the structure of Embodiment 3 of the organic waste composite dehydration system provided by the present invention;

[0045] Figure 4 This is a front view schematic diagram of the structure of Embodiment 4 of the organic waste composite dehydration system provided by the present invention;

[0046] Figure 5 This is a front view schematic diagram of the structure of Embodiment 5 of the organic waste composite dehydration system provided by the present invention;

[0047] Figure label:

[0048] 1-Physical dehydration device;

[0049] 11-Ultra-high pressure stacked box-type dewatering device; 111-Box-type material feeder; 112-Material feeder / unloader; 113-Filter cloth; 114-Filter press chamber; 115-Filter chamber lifting hydraulic press; 116-Box-type filter press hydraulic press; 117-Box-type filter press hydraulic station;

[0050] 12-Ultra-high pressure laminated belt dewatering device; 121-Belt feeder; 122-Filter belt; 123-Filter belt traction machine; 124-Belt filter press hydraulic press; 125-Belt filter press hydraulic station;

[0051] 2-Material crushing device; 21-Chain crusher; 22-Hammer / blade crusher; 23-Toothed shredder;

[0052] 3-Biological dehydration device; 31-Aerated fermentation bag; 32-Aerated fermentation cylinder; 33-Aerated fermentation tray;

[0053] 4-Buffered feeding device; 41-Buffered belt conveyor; 42-Screw conveyor feeder;

[0054] 5-Auxiliary ventilation device; 51-Ventilating tray; 52-Ventilating pad;

[0055] 6-Buffer unloading device; 61-Collection bin; 62-Unloader; 63-Pressure relief dust collection bag;

[0056] 7-Material weighing device. Detailed Implementation

[0057] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation, structure, features and effects of the multi-source organic waste co-treatment system proposed according to the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0058] Example 1:

[0059] Please see Figure 1 As shown, the organic waste composite dewatering system of Embodiment 1 of the present invention mainly includes: a physical dewatering device 1, a material crushing device 2, and a biological dewatering device 3; wherein, the material crushing device 2 is connected and installed at the rear end of the physical dewatering device 1 and the front end of the biological dewatering device 3. It can be understood that the physical dewatering device 1 is an ultra-high pressure stacked box-type dewatering device 11, which includes: a box-type feeding machine 111, a feeding / unloading machine 112, a filter cloth 113, a filter chamber 114, a filter chamber lifting hydraulic press 115, a box-type filter press hydraulic press 116, and a box-type filter press hydraulic station 117; the box-type feeding machine 111 is installed at the front end of the feeding / unloading machine 112, and... The filter cloth 113 is wound around the cloth / unloading machine 112, which is installed on the upper side of the filter chamber 114. The filter chamber lifting hydraulic press 115 is installed below the filter chamber 114, and the box-type filter press 116 is installed above the filter chamber 114. The box-type filter press hydraulic station 117 is connected to the filter chamber lifting hydraulic press 115 and the box-type filter press 116 through oil pipes.

[0060] It should be noted that, since the dehydrated material is organic waste with a lot of fiber, low bulk density, and low hardness, such as cassava starch residue and pig manure, the material crushing device 2 is a chain crusher 21, and the biological dehydration device 3 is an air-permeable fermentation bag 31.

[0061] Example 2:

[0062] Please see Figure 2 As shown, the organic waste composite dehydration system of Embodiment 2 of the present invention is similar to that of Embodiment 1, except that:

[0063] The physical dewatering device 1 is an ultra-high pressure laminated belt dewatering device 12, which includes: a belt feeder 121, a filter belt 122, a filter belt traction machine 123, a belt filter press hydraulic press 124, and a belt filter press hydraulic station 125.

[0064] The belt feeder 121 is installed at the front end of the filter belt traction machine 123. The filter belt 122 is wound around the filter belt traction machine 123 and passes through the belt filter press 124. The belt filter press 124 is connected to the belt filter press hydraulic station 125 through hydraulic oil pipes.

[0065] The biological dehydration device 3 is an aerated fermentation tank 32.

[0066] It is understandable that, in order to facilitate the asynchronous and flexible operation of the physical dewatering device 1 (continuous dewatering) and the intermittent operation of the material crushing device 2, a buffer feeding device 4 is added. The buffer feeding device 4 includes a buffer belt conveyor 41 and a screw conveyor feeder 42; the buffer belt conveyor 41 is connected and installed at the rear end of the physical dewatering device 1, and the screw conveyor feeder 42 is connected and installed at the rear end of the buffer belt conveyor 41 and the front end of the material crushing device 2.

[0067] It should be noted that if continuous dehydration or intermittent crushing operations are required, the material flakes dehydrated by the physical dehydration device 1 are first stored in the buffer belt conveyor 41 of the buffer feeding device 4. When crushing is required, the buffer belt conveyor 41 and the screw conveyor feeder 42 are started. The buffer belt conveyor 41 feeds material to the screw conveyor feeder 42, and the screw conveyor feeder 42 feeds material to the material crushing device 2.

[0068] Example 3:

[0069] Please see Figure 3 As shown, the organic waste composite dehydration system of Embodiment 3 of the present invention is similar to that of Embodiment 1, except that:

[0070] Since the dewatered material is organic waste with high bulk density and hardness, such as municipal sludge and sugar filter mud, the material crushing device 2 is a hammer / blade crusher 22.

[0071] Understandably, to improve air permeability, oxygen supply, and heat dissipation when the organic waste, crushed into powder by the hammer / blade crusher 22, is placed in the breathable fermentation bag 31 for stacking fermentation and dehydration, thereby enhancing the efficiency of biological fermentation and dehydration, an auxiliary ventilation device 5 is added. The auxiliary ventilation device 5 includes a ventilation tray 51 and a ventilation pad 52. When the organic waste, after dehydration by the physical dehydration device 1 and crushing by the material crushing device 2, is placed in the breathable fermentation bag 31 for stacking fermentation, the ventilation tray 51 is placed below the breathable fermentation bag 31, and the ventilation pad 52 is placed between the breathable fermentation bags 31.

[0072] Example 4:

[0073] Please see Figure 4 As shown, the organic waste composite dehydration system of Embodiment 4 of the present invention is similar to that of Embodiment 1, except that:

[0074] The biological dehydration device 3 is an aerated fermentation tray 33.

[0075] Understandably, to facilitate the asynchronous and flexible operation of the material crushing device 2, which allows for the intermittent loading of crushed organic waste into the biological dehydration device 3 while maintaining continuous crushing operation, a buffer unloading device 6 is added. The buffer unloading device 6 includes a collection bin 61, a discharger 62, and a pressure-relief dust collection bag 63. The collection bin 61 is connected to the rear end of the material crushing device 2, the discharger 62 is connected to the lower end of the collection bin 61, and the pressure-relief dust collection bag 63 is connected to the collection bin 61.

[0076] It should be noted that if continuous crushing of organic waste is required and intermittent loading into the aerated fermentation tray 33 is required, the material crushed by the material crushing device 2 is first stored in the collection bin 61. When it is necessary to load the material into the aerated fermentation tray 33, the unloader 62 is activated, and the unloader 62 loads the crushed material into the aerated fermentation tray 33.

[0077] Example 5:

[0078] Please see Figure 5 As shown, the organic waste composite dehydration system of Embodiment 5 of the present invention is similar to that of Embodiment 4, except that:

[0079] The material crushing device 2 is a toothed shredder 23.

[0080] It is understandable that, in order to quantitatively load the organic waste crushed by the material crushing device 2 into the biological dehydration device 3 for biological fermentation and dehydration, a material weighing device 7 is added. The material weighing device 7 is connected and installed at the rear end of the buffer unloading device 6 and at the front end of the biological dehydration device 3.

[0081] The dehydration method of the organic waste composite dehydration system of the present invention includes the following steps:

[0082] S1 Physical Dehydration of Materials: The physical dehydration device 1 is started, and the dehydrated material is laid and wrapped on the filter belt 122 by the belt feeder 121 and directly pulled and transported to the belt filter press 124 by the filter belt traction machine 123 for ultra-high pressure filtration and dehydration. Alternatively, the dehydrated material is laid and wrapped on the filter cloth 113 by the box feeder 111 and the feeder / unloader 112, and the feeder / unloader 112 folds the material layer wrapped on the filter cloth 113 into multiple layers and places them into the filter chamber 114. The box filter press 116 performs ultra-high pressure filtration and dehydration on the multiple layers of dehydrated material in the filter chamber 114. The belt filter press 124 or the box filter press 116 dehydrates the dehydrated material into flakes with a moisture content of 55% to 40%.

[0083] S2 Material Piece Crushing: Pieces with a moisture content of 55% to 40% are unloaded from the filter belt 122 or filter cloth 113 by the filter belt traction machine 123 or the cloth / unloading machine 112, and crushed into powder or / and small granules and small flakes by the material crushing device 2;

[0084] S3 biological dehydration: Powdered or / and small granular or flake organic materials with a moisture content of 55% to 40% are loaded into the biological dehydration device 3 for 2 to 20 days of aerobic biological fermentation. The material is decomposed by microorganisms, generating heat to raise the temperature to above 65°C, evaporating the moisture and dehydrating it into materials with a moisture content of less than 40%.

[0085] In the first specific embodiment of the dewatering method of the organic waste composite dewatering system of the present invention, the physical dewatering device 1 used is the ultra-high pressure stacked box-type dewatering device 11, and the biological dewatering device 3 is the air-permeable fermentation bag 31 to perform composite dewatering of municipal sludge with an initial moisture content of 80% to a moisture content of 30%. The specific steps of the dewatering method are as follows:

[0086] S1 Material Physical Dewatering: Start the ultra-high pressure stacked box-type dewatering device 11, and transport the municipal sludge with 80% moisture content to the cloth / unloading machine 112 through the box-type cloth feeder 111. The cloth / unloading machine 112 lays and wraps the municipal sludge with 80% moisture content on the filter cloth 113, and folds the municipal sludge material layer with 80% moisture content wrapped by the filter cloth 113 into multiple layers and places it into the filter press chamber 114. The box-type filter press hydraulic press 116 performs ultra-high pressure filter dewatering on the multiple layers of municipal sludge in the filter press chamber 114 to produce municipal sludge material flakes with 45% moisture content.

[0087] S2 Particle Crushing: Municipal sludge particles with a moisture content of 45% are unloaded from the filter cloth 113 by the cloth / unloader 112 and crushed into municipal sludge powder with a particle size of less than 5mm by the hammer / blade crusher 22.

[0088] S3 Biological Dehydration: Municipal sludge powder with a moisture content of 45% is packed into the breathable fermentation bags 31 at a rate of 40kg / bag and stacked in piles of 5 bags for 15 days of aerobic biological fermentation. Through the heat generated by the decomposition of materials by microorganisms, the temperature of the municipal sludge powder in the breathable fermentation bags 31 rises to above 65℃ after 12 hours of fermentation, and to above 75℃ after 20 hours. After 10 days, the fermentation temperature drops back to below 60℃, and after 15 days, the fermentation temperature drops to below 40℃, indicating that the fermentation is almost complete. The material in the breathable fermentation bags 31 is weighed, and the material weight has decreased from 40kg / bag to an average of 29kg / bag. The breathable fermentation bags 31 are opened and samples are taken for moisture testing. The municipal sludge powder has been biologically fermented, dehydrated, and dried to a moisture content of 30%, meeting the requirements of the municipal sludge physical + biological composite deep dehydration technology.

[0089] In a second specific embodiment of the dehydration method of the organic waste composite dehydration system of the present invention, the physical dehydration device 1 used is the ultra-high pressure stacked belt dehydration device 12, and the biological dehydration device 3 is the aerated fermentation cylinder 32, which performs composite dehydration of pig manure residue with an initial moisture content of 70% to a moisture content of 35%. The dehydration method is similar to that of the previous embodiment, except that:

[0090] In S1, the ultra-high pressure laminated belt dewatering device 12 is started. The pig manure residue is laid and wrapped on the filter belt 122 by the belt feeder 121 and directly pulled and transported to the belt filter press 124 by the filter belt traction machine 123 for ultra-high pressure filter dewatering into material sheets with a moisture content of 40%.

[0091] S2 pig manure residue with 40% moisture content is unloaded from the filter belt 122 by the filter belt traction machine 123, 1% potassium sulfate is added, and then crushed into powdered pig manure residue by the chain crusher 21.

[0092] S3 Biological Dehydration: Powdered pig manure residue mixed with 1% potassium sulfate and 39.5% moisture content is loaded into the aerated fermentation cylinder 32 at a standard weight of 50kg / cylinder for 2 days of aerobic biological fermentation. Through the heat generated by microbial decomposition of materials, the fermentation temperature of the powdered pig manure residue in the aerated fermentation cylinder 32 rises to above 70℃ after 8 hours of fermentation. After 48 hours of fermentation, the fermentation temperature drops back to below 50℃, and the fermentation is basically nearing completion. The material in the aerated fermentation cylinder 32 is weighed, and the material weight has decreased from 50kg / cylinder to an average of 44kg / cylinder. The material in the aerated fermentation cylinder 32 is poured out and sampled for moisture testing. It is found that the pig manure residue has been biologically fermented, dehydrated, and dried to a moisture content of 35%, meeting the requirements of the physical + biological composite deep dehydration technology for pig manure residue and subsequent fertilizer resource utilization.

[0093] In the third specific embodiment of the dehydration method of the organic waste composite dehydration system of the present invention, the dehydration method is similar to that of the first embodiment, except that:

[0094] Before the box-type fabric feeder 111 and the fabric / unloading machine 112 in S1 are fabricated, 5% garden waste powder and 2% potassium chloride are added to the municipal sludge.

[0095] In the fourth specific embodiment of the dehydration method of the organic waste composite dehydration system of the present invention, the dehydration method is similar to that of the first embodiment, except that:

[0096] Municipal sludge with a moisture content of 45% and crushed into small particles with a particle size of less than 10mm is placed into the breathable fermentation bag 31. Before fermentation, 10% of powdered straw powder is added and stirred in.

[0097] The organic waste composite dehydration system and dehydration method provided by this invention have at least the following beneficial effects:

[0098] It can meet the needs of environmental protection and resource utilization of organic waste in real production, and realize the integration of mechanical physical dehydration and biological fermentation dehydration. Without relying on other organic auxiliary materials or significantly reducing the reliance on other organic auxiliary materials, it can efficiently and cost-effectively dehydrate organic waste with a moisture content of about 80% or even higher to a moisture content of less than 40%, meet the requirements of resource utilization, reduce the treatment cost of organic waste in society, and greatly promote the improvement of the level of environmental protection and resource utilization of organic waste in society.

[0099] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

[0100] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in sequential order. In certain circumstances, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the invention. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0101] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of the claims of the pending application of the present invention.

Claims

1. A composite dewatering system for organic waste, characterized in that, include: Physical dehydration device, material crushing device, buffer feeding device, auxiliary ventilation device, and biological dehydration device; The biological dehydration device includes one or more of the following: aerated fermentation bags, aerated fermentation cylinders, or aerated fermentation trays; The material crushing device is connected and installed at the rear end of the physical dehydration device and the front end of the biological dehydration device; The physical dehydration device includes: an ultra-high pressure stacked box-type dehydration device or an ultra-high pressure stacked belt-type dehydration device; The ultra-high pressure stacked box-type dewatering device includes: a box-type material feeder, a material feeder / unloader, filter cloth, a filter chamber, a filter chamber lifting hydraulic press, a box-type filter press hydraulic press, and a box-type filter press hydraulic station; The box-type fabric feeder is installed at the front end of the fabric / unloading machine, the fabric / unloading machine is installed on the upper side of the filter press chamber, the filter cloth is wound on the fabric / unloading machine, the filter chamber lifting hydraulic press is installed below the filter press chamber, the box-type filter press hydraulic press is installed above the filter press chamber, and the box-type filter press hydraulic station is connected to the filter chamber lifting hydraulic press and the box-type filter press hydraulic press through oil pipes; The ultra-high pressure laminated belt dewatering device includes: a belt feeder, a filter belt, a filter belt traction machine, a belt filter press hydraulic press, and a belt filter press hydraulic station; The belt feeder is installed at the front end of the filter belt traction machine. The filter belt is wound around the filter belt traction machine and passes through the belt filter press hydraulic press. The belt filter press hydraulic press is connected to the belt filter press hydraulic station through hydraulic oil pipes. The buffer feeding device includes: a buffer belt conveyor and a screw conveyor feeder; The buffer belt conveyor is connected and installed at the rear end of the physical dewatering device, and the screw conveyor feeder is connected and installed at the rear end of the buffer belt conveyor and the front end of the material crushing device; The auxiliary ventilation device includes: a ventilation tray and / or a ventilation pad; The breathable tray is placed below the breathable fermentation bag, the breathable fermentation cylinder, or the breathable fermentation tray, and the breathable pad is placed below or between the breathable fermentation bag.

2. The organic waste composite dehydration system according to claim 1, characterized in that, The material crushing device includes one or more of a chain crusher, a hammer / blade crusher, or a toothed shredder.

3. The organic waste composite dehydration system according to claim 1, characterized in that, Also includes: Buffer unloading device; The buffer unloading device includes: a collection bin, an unloader, and a pressure-relief dust collection bag; The material collection bin is connected and installed at the rear end of the material crushing device; the unloader is connected and installed at the lower end of the material collection bin; and the pressure relief dust removal bag is connected and installed on the material collection bin.

4. The organic waste composite dehydration system according to claim 3, characterized in that, It also includes a material weighing device; the material weighing device is connected to the rear end of the material crushing device and the front end of the biological dehydration device, or connected to the rear end of the buffer unloading device and the front end of the biological dehydration device.

5. A dewatering method for an organic waste composite dewatering system according to any one of claims 1-4, characterized in that, Includes the following steps: S1 Physical Dehydration of Materials: The physical dehydration device is started, and the dehydrated material is laid and wrapped on the filter belt by the belt feeder and directly pulled and transported to the belt filter press by the filter belt traction machine for ultra-high pressure filtration and dehydration. Alternatively, the dehydrated material is laid and wrapped on the filter cloth by the box feeder and the feeder / unloader, and the material layer wrapped by the filter cloth is folded into multiple layers and placed into the filter chamber by the feeder / unloader. The multiple layers of dehydrated material in the filter chamber are subjected to ultra-high pressure filtration and dehydration by the box filter press. The belt filter press or the box filter press dehydrates the dehydrated material into flakes with a moisture content of 55%~40%. S2 Material Piece Crushing: Pieces with a moisture content of 55%~40% are unloaded from the filter cloth or the filter belt by the cloth / unloading machine or the filter belt traction machine, and crushed into powder or / and small granules and small flakes by the material crushing device; S3 biological dehydration: Powdered or / and small granular or flake organic materials with a moisture content of 55% to 40% are loaded into the biological dehydration device for 2 to 20 days of aerobic biological fermentation. The material is decomposed by microorganisms, generating heat to raise the temperature to above 65°C, evaporating the moisture and dehydrating it into materials with a moisture content of less than 40%.

6. The dewatering method of the organic waste composite dewatering system according to claim 5, characterized in that, Before the fabric feeder or / and the fabric / unloading machine in S1 distributes the fabric, organic fiber auxiliary materials or / and plant nutrient macro-, micro-, and trace element materials are added to the dehydrated material. The material crushing device in S2 crushes material flakes with a moisture content of 55% to 40% into powder with a particle size of more than 5 mm or small granules with a particle size of less than 10 mm, and small flakes with a flake size of less than 50 mm. The material crushing device in S2 adds organic fiber auxiliary materials and / or plant nutrient macro- and micro-elements before crushing material flakes with a moisture content of 55%~40%. Before fermentation, organic fiber adjuvants and / or plant nutrient macro- and micronutrient materials are added and stirred into the biological dehydration device. The material in S3 is crushed into small particles or / and powder with a particle size of less than 10 mm and has a moisture content of 55% to 40%.

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