Organic waste composite dehydration system and dehydration method

Abstract

The invention discloses an organic waste composite dehydration system and a dehydration method.The organic waste composite dehydration system comprises a physical dehydration device, a material crushing device and a biological dehydration device, and the material crushing device is connected to 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 laminated box type dehydration device or an ultrahigh-pressure laminated belt type dehydration device. The method can meet the requirements of environment-friendly treatment and resource utilization of organic wastes in real production, realizes integrated fusion of mechanical and physical dehydration and biological fermentation dehydration, and greatly reduces the energy consumption under the condition of not depending on other organic auxiliary materials or greatly reducing the dependence on other organic auxiliary materials. According to the method, the organic waste with the moisture content of about 80% or even higher can be efficiently, directly and deeply dehydrated to the moisture content of 40% or lower at low cost, the index requirement of resource utilization is met, the treatment cost of the social organic waste is reduced, and the improvement of the social organic waste environment-friendly treatment and resource utilization level is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of organic waste composite dehydration, and in particular relates to an organic waste composite dehydration system and a dehydration method. Background Art

[0002] According to data released by relevant departments, my country generates nearly 6 billion tons of various organic wastes in social production and life every year, and most of them have a water content of more than 70% to 80%. The solid matter in organic wastes that has resource utilization value is basically the solid matter. Therefore, it is necessary to utilize these organic wastes with high water content as resources and turn them into treasure and use. The key is to reduce the water content of organic wastes efficiently and at low cost.

[0003] In production practice, the commonly used organic waste dehydration technologies and equipment include belt filter presses, plate and frame filter presses, screw presses, centrifuges, vacuum filters, etc. based on mechanical and physical principles, and tank fermentation machines, tower fermentation machines, etc., which belong to biological fermentation dehydration. The former generally has a dehydration efficiency limit of reducing the moisture content of organic waste from about 80% to about 60%, which does not meet the requirements of resource utilization, but it is quite difficult to continue to reduce it and the cost has increased significantly; while the latter can reduce the moisture content of organic waste from about 60% to below 40%, but it needs to add a considerable proportion of auxiliary materials, especially organic waste such as municipal sludge with relatively low nutrient content. It also needs to add a large amount of high-energy organic auxiliary materials to adjust the carbon-nitrogen ratio to ferment normally, resulting in a significant increase in treatment costs. Moreover, there is currently no integrated deep dehydration equipment that integrates mechanical and physical dehydration and biological fermentation dehydration on the market, resulting in most of the organic waste in society, especially municipal sludge with high moisture content and relatively low nutrient content such as organic matter, not being well treated and utilized.

[0004] Based on the actual production needs for environmental protection treatment and resource utilization of organic waste, an innovative integrated equipment integrating mechanical physical dehydration and biological fermentation dehydration has been developed. It can efficiently and low-costly directly dehydrate organic waste with a moisture content of about 80% or even higher to a moisture content of less than 40%, without relying on other organic auxiliary materials or greatly reducing dependence on other organic auxiliary materials, thus meeting the requirements of resource utilization indicators. It will be of great benefit to promoting the level of environmental protection management and resource utilization of organic waste in society. Summary of the invention

[0005] The purpose of the present invention is to provide an organic waste composite dehydration system for solving the problem of directly dehydrating organic waste to a depth of less than 40% for better resource utilization.

[0006] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions. According to the present invention, an organic waste composite dehydration system is proposed, which 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 the front end of the biological dehydration device;

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

[0010] The ultra-high pressure stacked box-type dehydration device comprises: a box-type cloth feeder, a cloth / discharger, a filter cloth, a filter press 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 material distribution feeder is installed at the front end of the material distribution / discharger; the material distribution / discharger is installed on the upper side of the filter press chamber, and the filter cloth is wound on the material distribution / discharger; the material distribution / discharger is installed on the upper 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 through an oil pipe;

[0012] The ultra-high pressure stacked belt dehydration device comprises: a belt cloth feeding loader, a filter belt, a filter belt tractor, a belt filter press hydraulic press, and a belt filter press hydraulic station;

[0013] The belt cloth feeder is installed at the front end of the filter belt tractor; the filter belt is wound on the filter belt tractor 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 a hydraulic oil pipe.

[0014] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0015] In one embodiment of the present invention, the biological dehydration device includes one or more of a breathable fermentation bag, a breathable fermentation cylinder, or a breathable fermentation tray.

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

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

[0018] Buffer feeding device;

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

[0020] The buffer belt conveyor is connected and installed at the rear end of the physical dehydration 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 also 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 mat is placed below or / and between the breathable fermentation bags.

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

[0026] Buffer unloading device;

[0027] The buffer unloading device comprises: a collecting bin, a discharger and a pressure relief dust removal bag;

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

[0029] In one embodiment of the present invention, 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 is connected to the rear end of the buffer unloading device and the front end of the biological dehydration device.

[0030] The present invention discloses a dehydration method of an organic waste composite dehydration system, which comprises the following steps:

[0031] S1 Physical dehydration of materials: start the physical dehydration device, lay and clamp the dehydrated materials on the filter belt through the belt cloth feeder, and directly haul and transport them to the belt filter press hydraulic press through the filter belt tractor for ultra-high pressure filtration dehydration, or lay and clamp the dehydrated materials on the filter cloth through the box cloth feeder and cloth / discharger, and fold the material layers clamped by the filter cloth into multiple layers through the cloth / discharger and lay them in the filter press chamber, and perform ultra-high pressure filtration dehydration on the multiple layers of dehydrated materials in the filter press chamber through the box filter press hydraulic press, and the belt filter press hydraulic press or the box filter press hydraulic press dehydrates the dehydrated materials into sheets with a moisture content of 55% to 40%;

[0032] S2 Flake crushing: Flakes with a moisture content of 55% to 40% are unloaded from the filter cloth or the filter belt by the cloth / discharger or the filter belt tractor, and are crushed into powder and / or small particles or flakes by the material crushing device;

[0033] S3 Biological dehydration: Powdered and / or small granular or flake organic materials with a moisture content of 55% to 40% are placed into the biological dehydration device for 2 to 20 days of biological aerobic fermentation. The materials are decomposed by microorganisms to generate heat and the temperature rises to above 65°C, evaporating the moisture and dehydrating the materials 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, the material distribution feeder or / and the material distribution / discharging machine in S1 add organic fiber auxiliary materials or / and plant nutrient macro, medium and trace element materials to the dehydrated material before distribution;

[0035] The material crushing device in S2 crushes the flakes with a moisture content of 55% to 40% into powder with a particle size of more than 5 mm or small particles with a particle size of less than 10 mm, or 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, medium and trace element materials before crushing the material pieces with a moisture content of 55% to 40%;

[0037] The material in S3 which is crushed into small granules with a particle size of less than 10 mm or / and powder with a moisture content of 55% to 40% is loaded into the biological dehydration device and is added with organic fiber auxiliary materials and / or plant nutrient macro, medium and trace element materials before fermentation.

[0038] Compared with the prior art, the present invention has obvious advantages and beneficial effects. By means of the above technical scheme, the organic waste composite dehydration system and dehydration method provided by the present invention have at least the following advantages and beneficial effects:

[0039] It can meet the needs of environmental protection treatment and resource utilization of organic waste in actual production, realize the integrated fusion of mechanical physical dehydration and biological fermentation dehydration, and can directly and deeply dehydrate organic waste with a moisture content of about 80% or even higher to a moisture content of less than 40% efficiently and at low cost without relying on other organic auxiliary materials or greatly reducing dependence on other organic auxiliary materials, thus meeting the index requirements for resource utilization, reducing the treatment cost of social organic waste, and greatly helping to promote the level of environmental protection management and resource utilization of social organic waste.

[0040] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 It is a schematic diagram of the main structure of the first embodiment of the organic waste composite dehydration system provided by the present invention;

[0043] Figure 2 It is a schematic diagram of the main structure of the second embodiment of the organic waste composite dehydration system provided by the present invention;

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

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

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

[0047] Reference numerals:

[0048] 1- Physical dehydration device;

[0049] 11-Ultra-high pressure stacked box-type dehydration device; 111-Box-type cloth feeder; 112-Drying / discharging machine; 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 dehydration device; 121-Belt cloth feeder; 122-Filter belt; 123-Filter belt tractor; 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-Tooth shredder;

[0052] 3-biological dehydration device; 31-breathable fermentation bag; 32-breathable fermentation cylinder; 33-breathable fermentation tray;

[0053] 4- cache feeding device; 41- cache belt conveyor; 42- screw conveyor feeder;

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

[0055] 6-buffer unloading device; 61-collection bin; 62-unloader; 63-pressure relief dust removal bag;

[0056] 7-Material weighing device. DETAILED DESCRIPTION

[0057] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation method, structure, characteristics and effects of the multi-source organic waste collaborative treatment system proposed in accordance with the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0058] Embodiment 1:

[0059] See also Figure 1 As shown, the composite dehydration system for organic waste according to the first embodiment of the present invention mainly comprises: a physical dehydration device 1, a material crushing device 2 and a biological dehydration device 3; wherein the material crushing device 2 is connected and installed at the rear end of the physical dehydration device 1 and the front end of the biological dehydration device 3. It can be understood that the physical dehydration device 1 is an ultra-high pressure stacked box-type dehydration device 11, and the ultra-high pressure stacked box-type dehydration device 11 comprises: a box-type material distribution feeder 111, a material distribution / discharger 112, a filter cloth 113, a filter press 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 material distribution feeder 111 is installed at the front end of the material distribution / discharger 112, The filter cloth 113 is wound around the distributor / discharger 112, the distributor / discharger 112 is installed on the upper side of the filter press chamber 114, the filter chamber lifting hydraulic press 115 is installed below the filter press chamber 114, the box-type filter press hydraulic press 116 is installed above the filter press chamber 114, and the box-type filter press hydraulic station 117 is connected to the filter chamber lifting hydraulic press 115 and the box-type filter press hydraulic press 116 through an oil pipe.

[0060] It should be noted that, since the dehydrated material is organic waste such as cassava starch residue and pig manure with more fiber, smaller bulk density and less hardness, the material crushing device 2 is a chain crusher 21, and the biological dehydration device 3 is a breathable fermentation bag 31.

[0061] Embodiment 2:

[0062] See also Figure 2 As shown, the organic waste composite dehydration system of the second embodiment of the present invention is similar to the first embodiment, and the difference is only in that:

[0063] The physical dehydration device 1 is an ultra-high pressure laminated belt dehydration device 12 , and the ultra-high pressure laminated belt dehydration device 12 comprises: a belt cloth feeder 121 , a filter belt 122 , a filter belt tractor 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 tractor 123, the filter belt 122 is wound on the filter belt tractor 123 and passes through the belt filter press hydraulic press 124, and the belt filter press hydraulic press 124 is connected to the belt filter press hydraulic station 125 through a hydraulic oil pipe.

[0065] The biological dehydration device 3 is a breathable fermentation cylinder 32 .

[0066] It is understandable that in order to facilitate the asynchronous and flexible operation function of the physical dehydration device 1 to perform uninterrupted dehydration operation while the material crushing device 2 performs intermittent operation, a buffer feeding device 4 is additionally configured. 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 dehydration 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 and intermittent crushing operations are required for materials, the dehydrated material sheets of the physical dehydration device 1 are first stored in the cache belt conveyor 41 of the cache feeding device 4. When crushing is required, the cache belt conveyor 41 and the screw conveyor feeder 42 are started, and the cache belt conveyor 41 feeds the screw conveyor feeder 42, and the screw conveyor feeder 42 feeds the material crushing device 2.

[0068] Embodiment three:

[0069] See also Figure 3 As shown, the organic waste composite dehydration system of the third embodiment of the present invention is similar to the first embodiment, and the difference is only in that:

[0070] Since the dehydrated 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] It can be understood that in order to make the breathable fermentation bag 31 have better ventilation, oxygen supply and heat dissipation when the organic waste crushed into powder by the hammer / blade crusher 22 is loaded for stacking fermentation and dehydration, and to improve the biological fermentation dehydration efficiency, an auxiliary ventilation device 5 is added. Among them, the auxiliary ventilation device 5 includes: a breathable tray 51 and a breathable pad 52; when the organic waste dehydrated by the physical dehydration device 1 and crushed by the material crushing device 2 is loaded into the breathable fermentation bag 31 for stacking fermentation, the breathable tray 51 is placed below the breathable fermentation bag 31, and the breathable pad 52 is placed between the breathable fermentation bags 31.

[0072] Embodiment 4:

[0073] See also Figure 4 As shown, the organic waste composite dehydration system of the fourth embodiment of the present invention is similar to the first embodiment, and the difference is only in that:

[0074] The biological dehydration device 3 is a breathable fermentation tray 33 .

[0075] It is understandable that in order to facilitate the uninterrupted crushing operation of the material crushing device 2 and the asynchronous and flexible operation function of intermittently loading the crushed organic waste into the biological dehydration device 3, a buffer unloading device 6 is additionally configured. Among them, the buffer unloading device 6 includes a collection bin 61, a discharger 62 and a pressure relief dust bag 63; the collection bin 61 is connected and installed at the rear end of the material crushing device 2, the discharger 62 is connected and installed at the lower end of the collection bin 61, and the pressure relief dust bag 63 is connected and installed on the collection bin 61.

[0076] It should be noted that if it is necessary to perform continuous crushing operations on organic waste and intermittent loading into the breathable fermentation tray 33, the material crushed by the material crushing device 2 is first stored in the collecting bin 61, and when it is needed to be loaded into the breathable fermentation tray 33, the discharger 62 is started, and the discharger 62 loads the crushed material into the breathable fermentation tray 33.

[0077] Embodiment five:

[0078] See also Figure 5 As shown, the organic waste composite dehydration system of the fifth embodiment of the present invention is similar to the fourth embodiment, and the difference is only in 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 additionally configured. The material weighing device 7 is connected and installed at the rear end of the buffer unloading device 6 and the front end of the biological dehydration device 3.

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

[0082] S1 Physical dehydration of materials: start the physical dehydration device 1, lay and clamp the dehydrated materials on the filter belt 122 through the belt cloth feeder 121, and directly haul and transport them to the belt filter press hydraulic press 124 through the filter belt tractor 123 for ultra-high pressure filtration dehydration, or lay and clamp the dehydrated materials on the filter cloth 113 through the box cloth feeder 111 and the cloth / discharger 112, fold the material layers clamped by the filter cloth 113 into multiple layers through the cloth / discharger 112 and lay them in the filter press chamber 114, perform ultra-high pressure filtration dehydration on the multiple layers of dehydrated materials in the filter press chamber 114 through the box filter press hydraulic press 116, and the belt filter press hydraulic press 124 or the box filter press hydraulic press 116 dehydrates the dehydrated materials into sheets with a moisture content of 55% to 40%;

[0083] S2 Flake crushing: Flakes with a moisture content of 55% to 40% are unloaded from the filter belt 122 or the filter cloth 113 by the filter belt tractor 123 or the cloth / discharger 112, and are crushed into powder and / or small particles or 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 biological aerobic fermentation. The materials are decomposed by microorganisms to generate heat and the temperature rises to above 65°C, evaporating the moisture and dehydrating the materials into materials with a moisture content of less than 40%.

[0085] In the first 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 box dehydration device 11, and the biological dehydration device 3 is the breathable fermentation bag 31 that performs composite dehydration on the municipal sludge with an initial moisture content of 80% to a moisture content of 30%. The specific steps of the dehydration method are as follows:

[0086] S1 Physical dehydration of materials: Start the ultra-high pressure stacked box-type dehydration device 11, and convey the municipal sludge with a moisture content of 80% to the distributing / discharging machine 112 through the box-type distributing feeder 111. The distributing / discharging machine 112 lays and clamps the municipal sludge with a moisture content of 80% on the filter cloth 113, and folds the municipal sludge with a moisture content of 80% clamped by the filter cloth 113 into multiple layers through the distributing / discharging machine 112 and lays them in the filter press chamber 114. The multiple layers of municipal sludge in the filter press chamber 114 are subjected to ultra-high pressure filtration dehydration through the box-type filter press hydraulic press 116 into municipal sludge sheets with a moisture content of 45%;

[0087] S2 sheet crushing: the municipal sludge sheet with a moisture content of 45% is unloaded from the filter cloth 113 by the cloth distributing / discharging machine 112, and is crushed into municipal sludge powder with a particle size of less than 5 mm by the hammer / blade crusher 22;

[0088] S3 Biological dehydration: Municipal sludge powder with a moisture content of 45% is loaded into the breathable fermentation bag 31 at a specification of 40kg / bag and stacked at 5 bags per stack for 15 days of biological aerobic fermentation. Microorganisms decompose the materials to generate heat. After 12 hours of fermentation, the municipal sludge powder in the breathable fermentation bag 31 is fermented and heated to above 65°C. After 20 hours of fermentation, the temperature is raised to above 75°C. After the 10th day, the fermentation temperature drops to below 60°C. On the 15th day, the fermentation temperature drops to below 40°C. The fermentation is basically close to completion. The material in the breathable fermentation bag 31 is weighed, and the material weight is reduced from 40kg / bag to an average of 29kg / bag. The breathable fermentation bag 31 is opened to take samples for moisture detection, and it is found that the municipal sludge powder has been biologically fermented and dehydrated to a moisture content of 30%, meeting the technical process requirements of physical + biological composite deep dehydration of municipal sludge.

[0089] In the 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 air permeable fermentation cylinder 32 that performs composite dehydration on 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 dehydration device 12 is started, and the pig manure residue is laid and clamped on the filter belt 122 by the belt cloth feeder 121, and is directly pulled and transported to the belt filter press hydraulic press 124 by the filter belt tractor 123 for ultra-high pressure filtration dehydration into a sheet with a moisture content of 40%;

[0091] The pig manure slag sheet with 40% moisture in S2 is unloaded from the filter belt 122 by the filter belt tractor 123, 1% potassium sulfate is added, and the sheet is crushed into powdered pig manure slag by the chain crusher 21;

[0092] S3 Biological dehydration: Powdered pig manure residue mixed with 1% potassium sulfate and 39.5% water content is loaded into the breathable fermentation cylinder 32 at a weight standard of 50kg / cylinder for 2 days of biological aerobic fermentation. Microorganisms decompose the materials to generate heat. After 8 hours of fermentation, the powdered pig manure residue in the breathable fermentation cylinder 32 is fermented and heated to above 70°C. After 48 hours of fermentation, the fermentation temperature drops to below 50°C, and the fermentation is basically close to the end. The material in the breathable fermentation cylinder 32 is weighed, and the weight of the material is reduced from 50kg / cylinder to an average of 44kg / cylinder. The material in the breathable fermentation cylinder 32 is poured out and sampled for moisture detection, and the pig manure residue has been biologically fermented and dehydrated to a moisture content of 35%, meeting the requirements of the physical + biological composite deep dehydration technology of 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 the first embodiment, except that:

[0094] The box-type material distribution feeder 111 and the material distribution / discharging machine 112 in S1 add 5% of garden waste powder and 2% of potassium chloride into the municipal sludge before distribution.

[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 the first embodiment, except that:

[0096] The municipal sludge crushed into small particles with a particle size of less than 10 mm and a moisture content of 45% in S3 is loaded into the breathable fermentation bag 31, and 10% of powdered straw powder is added and stirred before fermentation.

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

[0098] It can meet the needs of environmental protection treatment and resource utilization of organic waste in actual production, realize the integrated fusion of mechanical physical dehydration and biological fermentation dehydration, and can directly and deeply dehydrate organic waste with a moisture content of about 80% or even higher to a moisture content of less than 40% efficiently and at low cost without relying on other organic auxiliary materials or greatly reducing dependence on other organic auxiliary materials, thus meeting the index requirements for resource utilization, reducing the treatment cost of social organic waste, and greatly helping to promote the level of environmental protection management and resource utilization of social organic waste.

[0099] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

[0100] In addition, although each operation is described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the present invention. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0101] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. An organic waste composite dehydration system, characterized in that: include: Physical dehydration devices, material crushing devices and biological dehydration devices; 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 dehydration device or an ultra-high pressure stacked belt dehydration device; The ultra-high pressure stacked box-type dehydration device comprises: a box-type cloth feeder, a cloth / discharger, a filter cloth, a filter press 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 material distribution feeder is installed at the front end of the material distribution / discharger, the material distribution / discharger is installed on the upper side of the filter press chamber, the filter cloth is wound on the material distribution / discharger, 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 an oil pipe; The ultra-high pressure stacked belt dehydration device comprises: a belt cloth feeder, a filter belt, a filter belt tractor, a belt filter press hydraulic press, and a belt filter press hydraulic station; The belt material feeder is installed at the front end of the filter belt tractor, the filter belt is wound on the filter belt tractor and passes through the belt filter press hydraulic press, and the belt filter press hydraulic press is connected to the belt filter press hydraulic station through a hydraulic oil pipe.

2. The organic waste composite dehydration system according to claim 1, characterized in that: The biological dehydration device includes one or more of a breathable fermentation bag, a breathable fermentation cylinder or a breathable fermentation tray.

3. 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.

4. The organic waste composite dehydration system according to claim 1, characterized in that: Also includes: Buffer feeding device; The buffer feeding device comprises: a buffer belt conveyor and a screw conveying feeder; The buffer belt conveyor is connected and installed at the rear end of the physical dehydration 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.

5. The organic waste composite dehydration system according to claim 2, characterized in that: Also includes: Auxiliary ventilation 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 mat is placed below or / and between the breathable fermentation bags.

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

7. The organic waste composite dehydration system according to claim 6, 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 is connected to the rear end of the buffer unloading device and the front end of the biological dehydration device.

8. A dehydration method for an organic waste composite dehydration system according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1 Physical dehydration of materials: start the physical dehydration device, lay and clamp the dehydrated materials on the filter belt through the belt cloth feeder, and directly haul and transport them to the belt filter press hydraulic press through the filter belt tractor for ultra-high pressure filtration dehydration, or lay and clamp the dehydrated materials on the filter cloth through the box cloth feeder and cloth / discharger, and fold the material layers clamped by the filter cloth into multiple layers through the cloth / discharger and lay them in the filter press chamber, and perform ultra-high pressure filtration dehydration on the multiple layers of dehydrated materials in the filter press chamber through the box filter press hydraulic press, and the belt filter press hydraulic press or the box filter press hydraulic press dehydrates the dehydrated materials into sheets with a moisture content of 55% to 40%; S2 Flake crushing: Flakes with a moisture content of 55% to 40% are unloaded from the filter cloth or the filter belt by the cloth / discharger or the filter belt tractor, and are crushed into powder and / or small particles or flakes by the material crushing device; S3 Biological dehydration: Powdered and / or small granular or flake organic materials with a moisture content of 55% to 40% are placed into the biological dehydration device for 2 to 20 days of biological aerobic fermentation. The materials are decomposed by microorganisms to generate heat and the temperature rises to above 65°C, evaporating the moisture and dehydrating the materials into materials with a moisture content of less than 40%.

9. The dehydration method of the organic waste composite dehydration system according to claim 8, characterized in that: The material distribution feeder and / or the material distribution / discharging machine in S1 add organic fiber auxiliary materials and / or plant nutrient macro, medium and trace element materials into the dehydrated material before distribution; The material crushing device in S2 crushes the flakes with a moisture content of 55% to 40% into powder with a particle size of more than 5 mm or small particles with a particle size of less than 10 mm, or 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, medium and trace element materials before crushing the material pieces with a moisture content of 55% to 40%; The material in S3 which is crushed into small granules with a particle size of less than 10 mm or / and powder with a moisture content of 55% to 40% is loaded into the biological dehydration device and is added with organic fiber auxiliary materials and / or plant nutrient macro, medium and trace element materials before fermentation.

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