CN106831032B - High-speed humification method and device for realizing biological heat targeted recycling - Google Patents
High-speed humification method and device for realizing biological heat targeted recycling Download PDFInfo
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Abstract
The invention relates to a high-speed humification method and a device thereof for realizing targeted recycling of biological heat, wherein the method comprises the following steps: the humification raw materials are placed in a silo type composting reactor, low-flow-rate air supply is adopted in the temperature rising stage and the heat preservation stage of humification, air in the silo type composting reactor is led out from the top and then conveyed to the compost at the position of an easy-to-radiate surface, and then the air is discharged from an air outlet at the bottom; the device comprises a silo type composting reactor, an air supply mechanism and a branch pipe mechanism, wherein a top air outlet and a bottom air outlet are respectively arranged on the upper side and the lower side of the silo type composting reactor. Compared with the prior art, the invention adopts the modes of staged variable-speed gas supply and targeted gas supply, reduces the temperature gradient of each part of the piled material through targeted recycling of biological heat, and improves the humification efficiency.
Description
Technical Field
The invention belongs to the technical field of agricultural waste humification utilization, and relates to a high-speed humification method and a high-speed humification device for realizing biological heat targeted recycling.
Background
In recent years, the garbage production amount of China is rapidly increased at a speed of 10% per year, more than 8000 million tons of garbage are increased per year, and the total amount of the garbage accumulated over the years is more than 60 hundred million tons. With the continuous development of rural economic society and the continuous improvement of people's living standard, the problem of rural domestic garbage becomes more and more serious, and the treatment of agricultural wastes becomes an irreparable problem in the construction of new socialist rural areas. Agricultural wastes contain a large amount of substances such as protein, starch and cellulose, and are suitable for humification utilization. By adding the microbial agent with specific functions of degradation, decomposition and the like, the humification process of the agricultural wastes can be effectively promoted, so that the agricultural wastes are converted into humins capable of being recycled in agriculture, and the cyclic utilization of the agricultural wastes and the sustainable development of agriculture are realized. Because most rural areas have the problem that a large amount of agricultural organic wastes are difficult to collect and utilize in a centralized manner, the small-sized agricultural waste humification equipment has huge development space.
The humification process of the existing agricultural wastes is generally carried out in a composting reactor. Research shows that in the humification process, the humification efficiency is closely related to the temperature of the stockpile and the air supply mode of the system. As most organic matters in the agricultural wastes are converted into humus by the life activities of microorganisms in the humification process, the humus is convenient for human production activities, so that the gas supply rate, namely the oxygen supply amount can influence the life activities of the microorganisms, and further influence the humification efficiency, for example, the anaerobic state can occur in the stockpile due to too little ventilation quantity. In addition, the ventilation process can also accelerate the loss of biological heat in the stockpile, so that the gas temperature of the gas outlet is always higher than that of the gas inlet, a larger temperature gradient exists in the stockpile, and the rapid proceeding of the humification process is not facilitated.
The utility model discloses a chinese utility model patent that the publication number of granting is CN 203976652U discloses a compost humification device, the device includes the hemispherical jar body, the internal humification cavity that is equipped with of jar, a plurality of breather pipes have been arranged to the internal slope of jar, the flow valve is connected to the lower extreme of breather pipe, the muffler is all connected to the upper end of all breather pipes, be equipped with the stop valve on the muffler, be located and be equipped with a plurality of air vents on the breather pipe in the humification cavity, be equipped with an in put the pipe along the vertical extension of jar body radius on the muffler, put a end connection horizontal pipe of pipe in, the horizontal pipe is worn out the jar body, be located and put in the humification cavity and also be equipped with a plurality of air. The technical scheme that above-mentioned patent was published can control the air volume, carries out even cloth wind to the windrow, reduces the temperature gradient in the windrow to a certain extent for the humification progress of windrow, but this technical scheme does not consider the heat-conduction effect of easy cooling surface departments such as the jar wall of the jar body, makes the temperature of jar wall department windrow be less than the inside temperature of windrow, therefore great temperature gradient still exists, has restricted further going on fast of humification process.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-speed humification method and a device thereof, which can effectively reduce the temperature gradient of stockpile and realize the targeted recycling of biological heat.
The purpose of the invention can be realized by the following technical scheme:
a high-speed humification method for realizing biological heat targeted recycling specifically comprises the following steps:
(1) the humification raw materials are crushed and then placed in a silo type composting reactor, and air is introduced from the bottom of the silo type composting reactor by a fan to carry out the humification process;
(2) in the temperature rise stage and the heat preservation stage of humification, low-flow-rate air supply is adopted, and meanwhile, air in the silo type composting reactor is led out from the top of the silo type composting reactor, conveyed to a compost at an easy heat dissipation surface and then discharged from an air outlet at the bottom of the silo type composting reactor;
(3) in the cooling stage of humification, high-flow-rate air supply is adopted, and air in the silo-type composting reactor is discharged from an air outlet at the top of the silo-type composting reactor;
(4) and (4) after the humification is finished, taking out a humification product.
In the step (1), the humified raw material is crushed to have a particle size of 40-200 meshes.
In the step (1), the temperature of the air is 20-30 ℃. When the room temperature is higher, the air at the room temperature is directly introduced; when the room temperature is low in winter, the air needs to be heated by the air heater.
The time of the temperature rising stage in the step (2) is 3-5 days, and after the temperature rising stage is finished, the temperature of the easy-to-radiate surface of the silo type composting reactor is 48-52 ℃; the time of the heat preservation stage in the step (2) is 3-8 days, and the temperature of the easy-to-cool surface of the silo type composting reactor is 53-57 ℃; the time of the cooling stage in the step (3) is 3-5 days.
The easy heat dissipation surface is the inner side surface of the silo type composting reactor.
The air supply flow rate of the low-flow-rate air supply in the step (2) is 0.07-0.2L/min, and the air supply flow rate of the high-flow-rate air supply in the step (3) is 0.4-0.52L/min.
The device comprises a silo type composting reactor, an air supply mechanism communicated with the bottom of the silo type composting reactor and a branch pipe mechanism respectively communicated with the top and the inner side of the silo type composting reactor, wherein a top air outlet and a bottom air outlet are respectively arranged on the upper part and the lower part of the side surface of the silo type composting reactor. And valves are arranged on the top air outlet and the bottom air outlet and are controlled by a programmable logic controller. The top air outlet also serves as a feed inlet, and the bottom air outlet also serves as a feed outlet.
The air supply mechanism comprises a fan and a plurality of air diffusing pipes which are uniformly distributed at the bottom of the silo type composting reactor, and the fan conveys air to the interior of the silo type composting reactor through the air diffusing pipes. The air diffusing pipe is preferably a honeycomb air diffusing pipe, so that the uniform dispersion of air supply is ensured.
The branch pipe mechanism comprises an air conduit arranged at the top of the silo type composting reactor and a plurality of air branch pipes uniformly distributed on the side surface of the silo type composting reactor along the height direction of the silo type composting reactor, and the air in the silo type composting reactor returns to and is conveyed to the compost on the inner side surface of the silo type composting reactor after passing through the air conduit and the air branch pipes in sequence.
As a preferred technical scheme, the air conduit is a three-way air conduit, three outlets of the three-way air conduit form included angles of 120 degrees with each other, each outlet is communicated with a plurality of corresponding air branch pipes, and the plurality of air branch pipes communicated with each outlet are uniformly distributed along the circumferential direction of the silo type composting reactor, so that air can uniformly enter the inner side surface of the silo type composting reactor, and the uniform temperature of each part of the inner side surface of the silo type composting reactor is ensured.
The air conduit and the air branch pipe are provided with valves.
And a plurality of temperature sensors are distributed in the silo type composting reactor.
The programmable logic controller is used for monitoring the temperature of each part in the silo type composting reactor in real time, and the air supply rate of the fan and the opening degrees of the top air outlet, the bottom air outlet, the air conduit and the valves on the air branch pipes are adjusted in real time according to the temperature monitoring result, so that the uniform and stable temperature of each part of the compost is ensured.
The invention improves the air supply mode in the traditional agricultural organic waste humification process, and adopts a staged variable speed air supply and targeted air supply mode. Wherein, the step-by-step variable-speed air supply means that: low-speed gas supply is adopted in the early stage of humification, and high-speed gas supply is adopted in the later stage of humification, so that the gas supply and heat preservation requirements of different stages in the humification process are met; the targeted gas supply means: and (3) carrying out secondary recycling on the primary air carrying the biological heat, and introducing the primary air to an easy-radiating surface in a humification system, so that the purpose of targeted positioning recycling of the biological heat in the humification process is realized, the uniform temperature of each part of the stockpile is ensured, and the temperature gradient is reduced.
The invention uses a high-pressure centrifugal fan to forcibly blow air for primary air supply, and the air is conveyed into the reactor through a honeycomb-shaped air dispersing pipe arranged at the bottom of the silo type composting reactor. The top of the silo type composting reactor is provided with a three-way air conduit which leads to an easy heat dissipation surface, namely, the branch pipe mechanism is utilized to recycle heat of primary air supply and exhaust air through an air outlet at the bottom. In the initial heating-up stage and heat-insulating stage, the temperature gradient direction of the compost is generally higher than the central temperature than the edge, the heat loss form is mainly heat conduction, so that the internal side surface of the silo type compost reactor, namely an easily-radiating surface, is used as a main heat supply target in the targeted utilization of biological heat, and meanwhile, the opening degree of a valve on a corresponding air branch pipe is controlled by using a low-speed air supply and branch pipe mechanism according to a temperature control program, hot air naturally rises due to density difference, and the air after heat recovery is exhausted through a bottom air outlet. By the method, the temperature gradient in a humification system can be effectively reduced, and the purposes of biological heat recycling and heating with target demand are achieved. And in the cooling stage, the branch pipe mechanism is closed according to the production requirement, the common ventilation process is carried out, the air inlet amount is increased, and the top air outlet is opened. Through the gas supply mode, the temperature of each part of the compost in the humification process can be accurately controlled, and the humification efficiency is improved.
In practical application, the whole humification system is divided into an upper layer area, a middle layer area and a lower layer area by taking the actual stockpiling height as a standard, and air branch pipes are respectively arranged at the middle height of each layer area; the three-way guide pipe can increase heating points for targeted recycling of biological heat, and ensure that the temperature of each part of the inner side surface of the silo type composting reactor is uniform; in the early temperature rising stage and the heat preservation stage, a high-pressure low-flow-rate gas supply mode is adopted, the gas supply flow rate is controlled within the range of 0.07-0.2L/min, and the excessive high heat loss of stockpiling is avoided; and the air supply flow rate is improved in the later-stage cooling stage, the rapid and continuous cooling of the stockpile is ensured, and the temperature of the stockpile is avoided from being too high. And a programmable logic controller is adopted to control the temperature of each stage of humification, the opening of each valve and the air supply rate of the fan.
Compared with the prior art, the invention has the following characteristics:
1) aiming at the problems of high water content and large temperature gradient of the compost in the humification process of the agricultural wastes, the method combines the heat transfer characteristics of the compost, adopts a staged speed-variable gas supply and targeted gas supply mode, reduces the temperature gradient of each part of the compost, improves the utilization efficiency of biological heat and the overall humification rate in the humification process of the agricultural wastes, realizes high-speed humification, has higher economic, social and environmental benefits, and is suitable for a small-sized humification system of the agricultural wastes;
2) by targeted recycling of biological heat, accurate positioning of heating points of the stockpile and combination of a temperature control program, accurate control of temperature in the humification process is realized, uniform temperature of each part of the stockpile is ensured, the humification process is more accurate, stable and controllable, the utilization efficiency of the biological heat is obviously improved, and further the humification efficiency is improved;
3) simple process, small occupied area of the device, convenient operation management, low investment and operation cost and wide application condition range.
Drawings
FIG. 1 is a schematic view showing the overall structure of an apparatus according to example 2;
the notation in the figure is:
1-silo type compost reactor, 2-top air outlet, 3-bottom air outlet, 4-blower, 5-air diffuser, 6-air conduit, 7-air branch pipe, 8-valve.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1:
the humified raw materials are crushed and then fed into a silo type composting reactor 1. In the initial stage, low-speed gas supply is adopted, the gas supply flow rate is set to be 0.1L/min, the gas outlet 3 at the bottom is opened, the temperature rise rate of the stockpile is controlled according to temperature control equipment, the time of the stage is controlled to be 4 days, and the temperature of the inner side surface of the silo type composting reactor 1 is set to be 50 ℃ when the stage is ended. The high temperature stage is maintained at 55 deg.C for 3 days, and the gas supply is the same as the temperature raising stage. In the first two stages, the temperature of the air branch pipe 7 is used for monitoring, the temperature of the inner side surface of the silo type composting reactor 1 is kept near a set value, if the temperature is too high, the air outlet 3 at the bottom and the valves on the air branch pipe 7 are closed, and a common air supply mode is adopted. And in the cooling stage, high-speed air supply is adopted, the air supply flow rate is set to be 0.45L/min, the top air outlet 2 is opened, and the time is controlled to be 4 days.
By using the method, the humification time of the agricultural wastes is successfully shortened, and the utilization efficiency of biological heat and the humification rate in the process are improved.
Example 2:
a high-speed humification method for realizing biological heat targeted recycling specifically comprises the following steps:
(1) crushing the humification raw materials to a particle size of 40-80 meshes, placing the crushed humification raw materials in a silo-type composting reactor 1, and introducing air at 25 ℃ from the bottom of the silo-type composting reactor 1 by using a fan 4 to carry out a humification process;
(2) in the temperature rise stage and the heat preservation stage of humification, low-flow-rate air supply is adopted, the air supply flow rate is 0.07L/min, meanwhile, air in the silo type composting reactor 1 is led out from the top of the silo type composting reactor 1, then is conveyed to stockpiles at the inner side face of the silo type composting reactor 1, and then is discharged from an air outlet 3 at the bottom of the silo type composting reactor 1, wherein the time of the temperature rise stage is 5 days, after the temperature rise stage is finished, the temperature at the inner side face of the silo type composting reactor 1 is 48 ℃, the time of the heat preservation stage is 8 days, and the temperature at the inner side face of the silo type composting reactor 1 is 53 ℃;
(3) in the cooling stage of humification, high-flow-rate air supply is adopted, the air supply flow rate is 0.4L/min, and air in the silo-type composting reactor 1 is discharged from an air outlet 2 at the top of the silo-type composting reactor 1, wherein the time of the cooling stage is 5 days;
(4) and (4) after the humification is finished, taking out a humification product.
The device for realizing the high-speed humification method for the biological heat targeted recycling comprises a silo type composting reactor 1, a gas supply mechanism communicated with the bottom of the silo type composting reactor 1 and a branch pipe mechanism respectively communicated with the top and the inner side surface of the silo type composting reactor 1, wherein a top gas outlet 2 and a bottom gas outlet 3 are respectively arranged on the upper part and the lower part of the side surface of the silo type composting reactor 1.
The air supply mechanism comprises a fan 4 and 3 air diffusing pipes 5 which are uniformly distributed at the bottom of the silo type composting reactor 1, and the fan 4 conveys air to the interior of the silo type composting reactor 1 through the air diffusing pipes 5.
The branch pipe mechanism comprises an air conduit 6 arranged at the top of the silo type composting reactor 1 and 3 air branch pipes 7 uniformly distributed on the side surface of the silo type composting reactor 1 along the height direction of the silo type composting reactor 1, and the air in the silo type composting reactor 1 returns to the compost at the inner side surface of the silo type composting reactor 1 after passing through the air conduit 6 and the air branch pipes 7 in sequence. The air conduit 6 and the air branch pipe 7 are provided with valves 8.
Example 3:
a high-speed humification method for realizing biological heat targeted recycling specifically comprises the following steps:
(1) crushing humus raw materials until the particle size is 80-100 meshes, placing the crushed humus raw materials in a silo-type composting reactor 1, and introducing air at 30 ℃ from the bottom of the silo-type composting reactor 1 by using a fan 4 to carry out a humus process;
(2) in the temperature rise stage and the heat preservation stage of humification, low-flow-rate air supply is adopted, the air supply flow rate is 0.2L/min, meanwhile, air in the silo type composting reactor 1 is led out from the top of the silo type composting reactor 1, then is conveyed to stockpiles at the inner side face of the silo type composting reactor 1, and then is discharged from an air outlet 3 at the bottom of the silo type composting reactor 1, wherein the time of the temperature rise stage is 3 days, after the temperature rise stage is finished, the temperature at the inner side face of the silo type composting reactor 1 is 52 ℃, the time of the heat preservation stage is 3 days, and the temperature at the inner side face of the silo type composting reactor 1 is 57 ℃;
(3) in the cooling stage of humification, high-flow-rate air supply is adopted, the air supply flow rate is 0.52L/min, and air in the silo-type composting reactor 1 is discharged from an air outlet 2 at the top of the silo-type composting reactor 1, wherein the time of the cooling stage is 3 days;
(4) and (4) after the humification is finished, taking out a humification product.
A device for realizing a high-speed humification method for biological heat targeted recycling comprises a silo-type composting reactor 1, an air supply mechanism communicated with the bottom of the silo-type composting reactor 1 and a branch pipe mechanism respectively communicated with the top and the inner side surface of the silo-type composting reactor 1, wherein a top air outlet 2 and a bottom air outlet 3 are respectively arranged on the upper and lower sides of the side surface of the silo-type composting reactor 1.
The air supply mechanism comprises a fan 4 and 4 air diffusing pipes 5 which are uniformly distributed at the bottom of the silo type composting reactor 1, and the fan 4 conveys air to the interior of the silo type composting reactor 1 through the air diffusing pipes 5.
The branch pipe mechanism comprises an air conduit 6 arranged at the top of the silo type composting reactor 1 and 2 air branch pipes 7 uniformly distributed on the side surface of the silo type composting reactor 1 along the height direction of the silo type composting reactor 1, and the air in the silo type composting reactor 1 returns to the compost at the inner side surface of the silo type composting reactor 1 after passing through the air conduit 6 and the air branch pipes 7 in sequence. The air conduit 6 and the air branch pipe 7 are provided with valves 8.
Example 4:
a high-speed humification method for realizing biological heat targeted recycling specifically comprises the following steps:
(1) the humification raw materials are crushed to the particle size of 100-;
(2) in the temperature rise stage and the heat preservation stage of humification, low-flow-rate air supply is adopted, the air supply flow rate is 0.12L/min, meanwhile, air in the silo type composting reactor 1 is led out from the top of the silo type composting reactor 1, then is conveyed to stockpiles at the inner side face of the silo type composting reactor 1, and then is discharged from an air outlet 3 at the bottom of the silo type composting reactor 1, wherein the time of the temperature rise stage is 4 days, after the temperature rise stage is finished, the temperature at the inner side face of the silo type composting reactor 1 is 50 ℃, the time of the heat preservation stage is 6 days, and the temperature at the inner side face of the silo type composting reactor 1 is 55 ℃;
(3) in the cooling stage of humification, high-flow-rate air supply is adopted, the air supply flow rate is 0.47L/min, and air in the silo-type composting reactor 1 is discharged from an air outlet 2 at the top of the silo-type composting reactor 1, wherein the time of the cooling stage is 4 days;
(4) and (4) after the humification is finished, taking out a humification product.
A device for realizing a high-speed humification method for biological heat targeted recycling comprises a silo-type composting reactor 1, an air supply mechanism communicated with the bottom of the silo-type composting reactor 1 and a branch pipe mechanism respectively communicated with the top and the inner side surface of the silo-type composting reactor 1, wherein a top air outlet 2 and a bottom air outlet 3 are respectively arranged on the upper and lower sides of the side surface of the silo-type composting reactor 1.
The air supply mechanism comprises a fan 4 and 2 air diffusing pipes 5 which are uniformly distributed at the bottom of the silo type composting reactor 1, and the fan 4 conveys air to the interior of the silo type composting reactor 1 through the air diffusing pipes 5.
The branch pipe mechanism comprises an air conduit 6 arranged at the top of the silo type composting reactor 1 and 5 air branch pipes 7 uniformly distributed on the side surface of the silo type composting reactor 1 along the height direction of the silo type composting reactor 1, and the air in the silo type composting reactor 1 returns to the compost at the inner side surface of the silo type composting reactor 1 after passing through the air conduit 6 and the air branch pipes 7 in sequence. The air conduit 6 and the air branch pipe 7 are provided with valves 8.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (8)
1. A high-speed humification method for realizing biological heat targeted recycling is characterized by comprising the following steps:
(1) the humification raw materials are crushed and then placed in a silo type composting reactor (1), and air is introduced from the bottom of the silo type composting reactor (1) by a fan (4) to carry out the humification process;
(2) in the temperature rise stage and the heat preservation stage of humification, low-flow-rate air supply is adopted, and meanwhile, air in the silo-type composting reactor (1) is led out from the top of the silo-type composting reactor (1), conveyed to the compost at the position of the surface easy to dissipate heat and then discharged from an air outlet (3) at the bottom of the silo-type composting reactor (1);
(3) in the cooling stage of humification, high-flow-rate air supply is adopted, and air in the silo-type composting reactor (1) is discharged from an air outlet (2) at the top of the silo-type composting reactor (1);
(4) after the humification is finished, taking out a humification product;
the easy-radiating surface is the inner side surface of the silo type composting reactor (1);
the air supply flow rate of the low-flow-rate air supply in the step (2) is 0.07-0.2L/min, and the air supply flow rate of the high-flow-rate air supply in the step (3) is 0.4-0.52L/min;
the top and the inner side surface of the silo type composting reactor (1) are provided with branch pipe mechanisms, each branch pipe mechanism comprises an air conduit (6) arranged at the top of the silo type composting reactor (1) and a plurality of air branch pipes (7) uniformly distributed on the side surface of the silo type composting reactor (1) along the height direction of the silo type composting reactor (1), and air in the silo type composting reactor (1) returns to and is conveyed into compost at the inner side surface of the silo type composting reactor (1) after sequentially passing through the air conduits (6) and the air branch pipes (7).
2. The high-speed humification method for realizing biological heat targeted recycling according to claim 1, wherein in the step (1), the humified raw material is crushed to have a particle size of 40-200 meshes.
3. The high-speed humification method for achieving targeted biological heat recycling according to claim 1, wherein in the step (1), the temperature of the air is 20-30 ℃.
4. The high-speed humification method for realizing biological heat targeted recycling according to claim 1, wherein the time of the temperature rise stage in the step (2) is 3-5 days, and after the temperature rise stage is finished, the temperature of the easy-to-cool surface of the silo-type compost reactor (1) is 48-52 ℃; the time of the heat preservation stage in the step (2) is 3-8 days, and the temperature of the easy-to-radiate surface of the silo type compost reactor (1) is 53-57 ℃; the time of the cooling stage in the step (3) is 3-5 days.
5. The device for the high-speed humification method for realizing the biological heat targeted recycling according to any one of claims 1 to 4, characterized in that the device comprises a silo type composting reactor (1), an air supply mechanism communicated with the bottom of the silo type composting reactor (1) and a branch pipe mechanism respectively communicated with the top and the inner side of the silo type composting reactor (1), wherein the side of the silo type composting reactor (1) is respectively provided with a top air outlet (2) and a bottom air outlet (3) from top to bottom.
6. The device for realizing the high-speed humification method for the biological heat targeted recycling according to the claim 5, characterized in that the air supply mechanism comprises a fan (4) and a plurality of air diffusion pipes (5) which are uniformly arranged at the bottom of the silo type composting reactor (1), and the fan (4) conveys air to the interior of the silo type composting reactor (1) through the air diffusion pipes (5).
7. The device for realizing the high-speed humification method for the biological heat targeted recycling according to the claim 5, characterized in that the branch pipe mechanism comprises an air conduit (6) arranged at the top of the silo-type composting reactor (1) and a plurality of air branch pipes (7) uniformly distributed at the side of the silo-type composting reactor (1) along the height direction of the silo-type composting reactor (1), and the air in the silo-type composting reactor (1) is sequentially conveyed back to the compost at the inner side of the silo-type composting reactor (1) through the air conduit (6) and the air branch pipes (7).
8. The apparatus for high-speed humification for targeted bio-thermal reuse according to claim 7, wherein valves (8) are provided on the air conduit (6) and the air branch pipe (7).
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| CN100389894C (en) * | 2005-10-21 | 2008-05-28 | 北京师范大学 | Automatic ventilating control and controller for waste uniform degradation by temperature gradient feedback |
| CN100567219C (en) * | 2007-04-17 | 2009-12-09 | 同济大学 | A kind of bidirectional ventilated gentle pressure heap compost method |
| CN201264973Y (en) * | 2008-09-24 | 2009-07-01 | 东北农业大学 | Double-layer drawer type bioreactor |
| CN102030568B (en) * | 2010-10-29 | 2014-04-09 | 中国农业大学 | Method for recycling hot air generated from composts |
| CN202343548U (en) * | 2011-12-02 | 2012-07-25 | 安徽省正大环境工程有限公司 | Silo type biosolid aerobic fermentation reactor |
| CN104945032B (en) * | 2015-06-25 | 2018-05-01 | 广东省农业科学院农业资源与环境研究所 | Circular treatment compositing system and technique in a kind of foul smell |
| CN105218186A (en) * | 2015-11-03 | 2016-01-06 | 滕振亚 | The fertile fermentation tunnel of container-type straw biological |
| CN105924245A (en) * | 2016-07-06 | 2016-09-07 | 青岛康普天成环境科技有限公司 | Aerobic fermentation device for organic matters |
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