Agricultural biomass waste treatment system

Abstract

The utility model provides an agricultural biomass waste treatment system. The agricultural biomass waste treatment system comprises planting soil, a waste landfill layer, a water storage layer and a gravel layer which are arranged in a layered mode from top to bottom. The aeration device laid at the bottom of the gravel layer provides oxygen for all the layers, the increase of the oxygen content of the soil layer is matched with the water blocking effect of the water storage layer, an aerobic and high-humidity environment is formed in the waste landfill layer, the short-range digestion and denitrification process in the landfill layer is promoted, and therefore the conversion efficiency of agricultural biomass waste is improved. On one hand, the permeability of the matrix can be promoted through water blocking of the water storage layer and the water distribution device, and on the other hand, heat in the reaction process is brought out of the soil layer through the ventilation channels arranged in all directions, and oxygen is supplemented to the landfill layer in time; the reaction process of the agricultural biomass waste in the waste landfill layer can be maintained in an efficient equilibrium state, and the conversion capacity of the system on nutrients in the agricultural biomass waste is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste treatment, in particular to a treatment system for agricultural biomass waste. BACKGROUND

[0002] Rural biomass waste is usually complex in composition, unstable in carbon-nitrogen ratio, and rich in organic matter and biomass. It usually includes peat soil, crushed coconut shells or crop straw, and also includes cultivated substrates fermented from livestock and poultry manure and other organic matter. These materials, often due to the imperfection of treatment facilities and the backwardness of farmers' environmental protection consciousness, are discharged randomly and form sewage after gathering, which can pollute the water around the village.

[0003] In agricultural waste, peat soil, agricultural and forestry straw powder or coconut powder is too fine and needs to add a certain amount of expanded perlite and other materials to increase permeability. However, expanded perlite is not easy to decompose and often floats on the soil surface, forming white pollution. Other substrates are difficult to absorb water after drying, making it very inconvenient to water during seedling or sowing. In addition, when peat, agricultural and forestry crop straw, coconut powder, etc. are used alone as the carbon and nitrogen source of crops, the nutrient conversion capacity is obviously insufficient, livestock and poultry manure is difficult to completely decompose, and a large amount of harmful gases such as ammonia and hydrogen sulfide are generated, and the alkalinity after fermentation is too strong, which is not conducive to crop growth.

[0004] In the prior art, although the underground infiltration means has low operation cost, low energy consumption and good treatment effect, it often faces the risk of system blockage due to improper proportioning and loading of the filler. In addition, in the existing system, microbial nitrification and denitrification is the main way of denitrification of the underground infiltration system. However, the denitrification process is often limited by the lack of carbon source, which limits the denitrification capacity of the system. However, the existing means is difficult to supplement carbon source in time according to the balance state of the reaction process in the system. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the problems in the prior art, the purpose of the present application is to provide a treatment system for agricultural biomass waste. The present application provides good conditions for the waste landfill layer through the air supply device, and increases the water content of the waste landfill layer through the water storage layer, which can effectively promote the short-cut digestion denitrification process in the landfill layer, thereby improving the conversion efficiency of agricultural biomass waste.

[0006] In order to achieve the above-mentioned purpose, the treatment system for agricultural biomass waste provided by the present application comprises, arranged from top to bottom: planting soil for planting plants; waste landfill layer for landfilling agricultural biomass waste; water storage layer arranged below the waste landfill layer and storing water; gravel layer arranged below the water storage layer and provided with an air supply device at the bottom to provide oxygen to the above layers.

[0007] Optionally, the agricultural biomass waste treatment system as claimed in any one of the preceding claims, wherein the planting soil and the waste landfill layer are alternately flipped according to a preset period, and new agricultural biomass waste is filled in the waste landfill layer, and the original waste landfill layer is flipped to the top layer for planting plants.

[0008] Optionally, the agricultural biomass waste treatment system as claimed in any one of the preceding claims, wherein the aeration device is an aeration channel laid at the bottom of the gravel layer, and exhaust holes are arranged on the aeration channel to provide oxygen upward to the water storage layer and the waste landfill layer.

[0009] Optionally, the agricultural biomass waste treatment system as claimed in any one of the preceding claims, wherein the bottom of the gravel layer is further provided with a grid on the aeration channel, and the exhaust holes of the aeration channel are arranged at the gap positions between the grids.

[0010] Optionally, the agricultural biomass waste treatment system as claimed in any one of the preceding claims, wherein the top of the grid is further provided with a protective net, and the protective net is supported at the bottom of the gravel layer to limit the gravel from blocking the gaps between the grids or the exhaust holes of the aeration channel.

[0011] Optionally, the agricultural biomass waste treatment system as claimed in any one of the preceding claims, wherein the planting soil, the waste landfill layer, the water storage layer, and the gravel layer are further provided with a gas permeable channel longitudinally arranged therebetween, and the sidewall of the gas permeable channel is provided with gas permeable holes for introducing air into each layer.

[0012] Optionally, the agricultural biomass waste treatment system as claimed in any one of the preceding claims, wherein the waste landfill layer is further provided with a water distribution device for infiltrating the filtrate generated by composting downward.

[0013] Optionally, the agricultural biomass waste treatment system as claimed in any one of the preceding claims, wherein the planting soil, the waste landfill layer, the water storage layer, and the gravel layer are filled in a closed tank, and the water distribution device and the gas permeable channel and the aeration channel are uniformly arranged in the entire tank area.

[0014] Optionally, the agricultural biomass waste treatment system as claimed in any one of the preceding claims, wherein the water storage layer comprises 75% red soil and 25% coal cinder.

[0015] Compared with the prior art, the present application has the following technical effects:

[0016] The agricultural biomass waste treatment system provided by the application comprises, from top to bottom, a planting soil, a waste landfill layer, a water storage layer and a gravel layer. The application provides oxygen to the above layers through the air supply device arranged at the bottom of the gravel layer. The oxygen content of the soil layer is increased, and the water blocking effect of the water storage layer forms an aerobic and high-humidity environment in the waste landfill layer, thereby promoting the short-range digestion denitrification process in the waste landfill layer, and improving the conversion efficiency of the agricultural biomass waste. On the one hand, the water blocking of the water storage layer and the water distribution device can promote the permeability of the substrate, and on the other hand, the air supply channel and the air permeation channel arranged in each direction can take out the heat generated in the reaction process from the soil layer and supply oxygen to the landfill layer in time, so that the reaction process of the agricultural biomass waste in the waste landfill layer can be maintained in an efficient and balanced state, the turnover efficiency of the planting soil and the waste landfill layer is improved, and the conversion capacity of the system for the nutrients in the agricultural biomass waste is improved.

[0017] Other features and advantages of the application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, and together with the embodiments of the application, serve to explain the application, and do not constitute a limitation of the application. In the drawings:

[0019] Figure 1 FIG. 1 is a cross-sectional structure schematic diagram of the agricultural biomass waste treatment system according to the application.

[0020] In the figure, 1 represents an air supply channel; 2 represents a grid; 3 represents an air permeation channel; 4 represents a water distribution device; 5 represents a planting soil; 6 represents a waste landfill layer; 7 represents a water storage layer; and 8 represents a gravel layer. DETAILED DESCRIPTION

[0021] The preferred embodiments of the application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the application, and do not limit the application.

[0022] In the application, the meanings of "up" and "down" refer to the direction from the plant to the gravel layer, that is, down, and vice versa, which are not specific limitations of the device mechanism of the application.

[0023] REFERENCE Figure 1 As shown in the figure, the agricultural biomass waste treatment system provided by the application comprises, from top to bottom:

[0024] A planting soil 5 for planting plants;

[0025] A waste landfill layer 6 for landfilling agricultural biomass waste;

[0026] a water storage layer 7, which is arranged below the waste landfill layer 6 and stores water;

[0027] a gravel layer 8, which is arranged below the water storage layer 7 and is provided with an aeration device at the bottom to provide oxygen to the above layers.

[0028] The system uses the gaps between the gravel layers 8 to provide aeration channels and uses the water storage layer to maintain soil humidity, thereby promoting the conversion process of the microbial flora in the waste landfill layer 6 and improving the conversion efficiency of the entire system for agricultural biomass waste.

[0029] To improve the activity of the microbial flora in the waste landfill layer 6, the application further preferably embeds a water distribution device 4 in the waste landfill layer 6 and connects the pipeline of the water distribution device 4 to the filtrate discharge outlet of the composting system to use the water distribution device to infiltrate the filtrate generated by composting. Thus, the conversion efficiency of the waste landfill layer 6 is promoted by using the microorganisms carried in the filtrate, the reproduction of microorganisms and colonies in the soil is promoted by using the nutrients in the filtrate, and a more suitable conversion environment is provided by using the water in the filtrate.

[0030] Therefore, the waste landfill layer 6 of the application can quickly form new planting soil through humification and promote the downward development of plant root systems in the top layer of planting soil and promote plant growth by using its high water content. The plants in the planting soil are generally preferred to be landscaping plants, mainly flower plants for fresh flower transactions or crops with a short growth cycle. Therefore, when the plants are harvested, the topmost planting soil 5 can be removed together with the plants as a substrate soil for transplanting, then the humified material of the original waste landfill layer 6 is turned and replaced to the top layer as new planting soil, and new agricultural biomass waste is filled below as an updated waste landfill layer 6, and the original waste landfill layer 6 is turned to the top layer for planting plants.

[0031] To improve the oxygen content of the soil layer in the above-mentioned system, the application preferably arranges the aeration device as an aeration channel 1 laid at the bottom of the gravel layer 8, and the aeration channel 1 is provided with exhaust holes to provide oxygen to the water storage layer 7 and the waste landfill layer 6 upwardly.

[0032] To avoid blockage of the aeration channel 1, the application can further arrange a grid 2 above the aeration channel 1 at the bottom of the gravel layer 8, and the exhaust holes of the aeration channel 1 are arranged at the gap positions between the grid 2 when laying the aeration channel 1 and the grid. In addition, one or more layers of protective nets can be further laid on the top of the grid 2, so that the protective nets are supported at the bottom of the gravel layer 8, the gravel is contained in the nets, and the gravel, especially the gravel debris generated during construction, is prevented from blocking the gaps between the grid 2 or the exhaust holes of the aeration channel 1.

[0033] In addition, in order to further increase the salt content of the waste landfill layer 6 and facilitate the monitoring of the planting soil 5, the waste landfill layer 6, the water storage layer 7, and the gravel layer 8, the application can also longitudinally arrange corresponding air permeable channels 3 between each layer. The air permeable channels 3 can be composed of PVC pipes or metal pipes with air permeable holes in the side walls. On the one hand, air can be introduced into each layer through the air permeable holes, and on the other hand, the sensing and detection probes of the soil can be inserted into the soil layer to measure the real-time oxygen content and temperature and humidity, so as to adjust the oxygen supply amount of the bottom pipe and the water supply amount of the intermediate water distribution device according to the real-time soil layer environmental conditions, and maintain the soil inside in a relatively stable reaction condition.

[0034] In the system, the gravel layer 8, the water storage layer 7, the waste landfill layer 6, and the planting soil 5 can be filled layer by layer in a bottom-sealed groove body, and the water distribution device 4, the air permeable channel 3, and the air permeable channel 1 can be uniformly arranged in the entire groove body area in a radial or matrix form to ensure that the soil layer environment at each position in the system is as consistent as possible. When filling, the water storage layer 7 can be composed of 75% red soil and 25% coal cinder mixed uniformly. The coal cinder can provide an upward channel for the bottom air distribution, and the red soil can increase the water content of the soil layer and tightly combine with the surface of the coal cinder to avoid excessive penetration into the gravel layer and affect the air permeability.

[0035] Those skilled in the art can understand that the above description is only a preferred embodiment of the application and is not used to limit the application, although the application has been described in detail with reference to the foregoing embodiments, and those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A system for the treatment of agricultural biomass waste, characterized in that, It comprises, arranged from top to bottom: a planting soil (5) for planting plants; a waste landfill layer (6) for landfilling agricultural biomass waste; a water storage layer (7) arranged below the waste landfill layer (6) to store water; a gravel layer (8) arranged below the water storage layer (7) and provided with an aeration device at the bottom to provide oxygen to the above layers.

2. The agricultural biomass waste treatment system of claim 1, wherein, The planting soil (5) and the waste landfill layer (6) are rotated according to a predetermined period, and new agricultural biomass waste is filled in the waste landfill layer (6), and the original waste landfill layer (6) is turned over to the top layer for planting plants.

3. The agricultural biomass waste treatment system of claim 1, wherein, The aeration device is an aeration channel (1) laid at the bottom of the gravel layer (8), and the aeration channel (1) is provided with exhaust holes, which provide oxygen upward to the water storage layer (7) and the waste landfill layer (6).

4. The agricultural biomass waste treatment system of claim 3, wherein, The bottom of the gravel layer (8) is also provided with a grid (2) on the aeration channel (1), and the exhaust holes of the aeration channel (1) are arranged at the gap positions between the grids (2).

5. The agricultural biomass waste treatment system of claim 4, wherein, The top of the grid (2) is also paved with a protective net, which is supported on the bottom of the gravel layer (8) to limit the gravel from blocking the gaps between the grids (2) or blocking the exhaust holes of the aeration channel (1).

6. The agricultural biomass waste treatment system of claim 3, wherein, The planting soil (5), the waste landfill layer (6), the water storage layer (7), and the gravel layer (8) are also longitudinally provided with a ventilation channel (3) with air permeable holes in the side wall for ventilating air to each layer.

7. The agricultural biomass waste treatment system of any one of claims 1-6, wherein, The waste landfill layer (6) is also provided with a water distribution device (4) for infiltrating the filtrate generated by composting downward.

8. The agricultural biomass waste treatment system of claim 7, wherein, The planting soil (5), the waste landfill layer (6), the water storage layer (7), and the gravel layer (8) are filled in a closed tank, and the water distribution device (4), the ventilation channel (3), and the aeration channel (1) are uniformly arranged in the entire tank area.

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