CN105218185A - Container-type film covers static ventilation composting device - Google Patents

Abstract

The invention discloses a container-type film-covered static ventilation composting device, which includes an open-top container, a composting functional film and a control system. The open-top container includes a box body and a ventilation water collection tank arranged at the bottom of the box body. The composting functional film is covered on the top of the open top container, at least one discharge door is provided on the side wall along the long side of the open top container, and a discharge door is provided on the side wall along the short side of the open top container. An air blower for ventilation and oxygen supply inside the open-top container, and the control system is used to control the opening or closing of the air blower. The invention combines the concept of composting based on containers with advanced film-covered composting technology, and provides a composting device with short construction period, small occupied area and effective control of odor.

Description

Container-type film-covered static ventilation composting device

technical field

The invention relates to the technical field of composting, in particular to a container-type film-covered static ventilation composting device.

Background technique

The traditional static ventilation composting technology is also called rapid aerobic composting technology. The organic solid waste is piled on the ground and ventilation pipe system after sorting out, and the oxygen required for the fermentation process is ensured by forced air suction and air supply. Cover about 30 cm of decomposed compost to reduce the formation of odor and ensure a high temperature in the pile. The entire fermentation period is 2-3 weeks.

The traditional static ventilation composting technology has disadvantages such as long construction period, large land occupation, and difficulty in odor control, which largely limits the application of composting technology, especially because of the shortage of land in various parts of the country and the high environmental requirements of the composting process. , leading to the development of composting technology in my country has been subject to greater constraints.

Contents of the invention

The technical problem to be solved by the present invention is to provide a container-type film-covered static-ventilated composting device in order to overcome the shortcomings of the traditional static-ventilated composting technology in the prior art, such as long construction period, large floor area, and difficult odor control.

The present invention solves the above technical problems through the following technical solutions:

The invention provides a container-type film-covered static ventilation composting device, which is characterized in that it includes an open-top container, a composting functional film and a control system, and the open-top container includes a box body and a Ventilation sump, the composting functional film is covered on the top of the open top container, at least one discharge door is arranged on the side wall along the long side of the open top container, and at least one discharge door is arranged on the side wall along the short side of the open top container An air blower is provided for supplying oxygen to the interior of the open-top container, and the control system is used to control the opening or closing of the air blower.

Preferably, a ventilation plate is provided on the top of the ventilation sump, and a plurality of ventilation holes are opened on the ventilation plate.

Preferably, the ventilation sump is provided with a drain pipe at the bottom, the air outlet of the blower communicates with a ventilation pipe through a fan valve, the ventilation pipe communicates with a port of the drain pipe, and the outlet of the drain pipe The other port is provided with a drain valve.

Preferably, the control system includes an oxygen concentration detector, a temperature detector and a feedback control unit, and the feedback control unit is electrically connected to the oxygen concentration detector, the temperature detector and the blower respectively, and the The oxygen concentration detector and the temperature detector are both arranged in the compost in the box to detect the oxygen concentration and temperature respectively, and the feedback control unit is used to control the blower according to the detected oxygen concentration and temperature On or off.

Preferably, the composting functional film has a three-layer film structure, including an inner protective film, an intermediate film and an outer protective film.

Preferably, the material of the intermediate film is PTFE (polytetrafluoroethylene), and the material of the inner protective film and the outer protective film is ultraviolet-resistant polyester fiber.

Preferably, the ventilation sump has a width of 200-300mm and a depth of 200-300mm.

Preferably, the diameter of the ventilation holes is 8-12mm, and the distance between two adjacent ventilation holes is 200-400mm.

Preferably, the blower has a wind pressure of 3500-4500Pa and a power of 1-2KW.

The positive progress effect of the present invention is that: the present invention combines the concept of composting based on containers with advanced film-covered composting technology, and provides a composting device with a short construction period, a small footprint and effective control of odor. There is no need to build a special site for composting, only a site where containers can be stacked is required, and the construction period of the composting device is reduced from the traditional 1-2 years to 1-3 months, compared with the traditional static ventilation composting device It is reduced by about 3/4, and there is no need to build a special odor treatment device. The fugitive emission of odor can be automatically blocked through the composting functional film; except for feeding and discharging, the entire composting process is automatically controlled based on dual feedback of oxygen and temperature. manual supervision.

Description of drawings

Fig. 1 is a schematic bottom plan view of a container-type film-covered static-ventilated composting device according to a preferred embodiment of the present invention.

Fig. 2 is a top plan partial perspective view of a container-type film-covered static-ventilated composting device according to a preferred embodiment of the present invention.

Fig. 3 is a side view of a container-type film-covered static-ventilated composting device according to a preferred embodiment of the present invention.

Fig. 4 is a cross-sectional view along A-A direction of Fig. 1 .

Fig. 5 is a cross-sectional view along B-B direction of Fig. 1 .

Fig. 6 is a schematic stacking diagram of four container-type film-covered static-ventilated composting devices according to a preferred embodiment of the present invention.

detailed description

The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples.

As shown in Figures 1-5, the container-type film-covered static ventilation composting device of the present invention includes an open-top container 1 and a composting functional film 2, the open-top container includes a box body 3, and the composting functional film 2 is set and Covering the top of the open top container 1, a plurality of discharge doors 4 are provided on the side walls along the long sides of the open top container 1, and a plurality of discharge doors 4 are provided on the side walls along the short sides for Referring to the blower 5 for ventilation and oxygen supply inside the open top container 1, preferably, the blower 5 is a medium-pressure fan with a wind pressure of 4000 Pa and a fan power of 1.5KW.

The bottom of the box body 3 is provided with a ventilation sump 6, preferably, the width of the ventilation sump 6 is 200mm, and the depth is 200mm. The ventilation sump 6 is provided with a ventilation plate 7 at the top, and the ventilation The plate 7 is provided with a plurality of ventilation holes 8, preferably, the ventilation plate 7 can withstand a passing load of 10 tons, the diameter of the ventilation holes 8 is 10mm, and the distance between two adjacent ventilation holes 8 is 300mm .

The ventilation sump 6 is provided with a drain pipe 9 at the bottom, and the air outlet of the blower 5 is communicated with the vent pipe 11 through the fan valve 10, and the vent pipe 11 is communicated with a port of the drain pipe 9. The other end of the water pipe 9 is provided with a drain valve 12 .

The container-type film-covered static ventilation composting device also includes a control system, which specifically includes an oxygen concentration detector, a temperature detector and a feedback control unit. A control box 13 is provided, the feedback control unit is integrated inside the control box 13, and the oxygen concentration detector and the temperature detector are both arranged in the compost in the box body 3 for respectively detecting Oxygen concentration and temperature, the feedback control unit in the control box 13 controls the opening or closing of the blower 5 according to the detected oxygen concentration and temperature.

After the blower 5 is turned on, the air passes through the ventilation water collection tank 6 and enters the compost material through the ventilation hole 8 on the ventilation plate 7, and the filtrate produced in the composting process can pass through the ventilation water collection tank 6 and the compost material. The drain pipe 9 and the drain valve 12 are drained, and the compost material can be shoveled out by a forklift by opening the discharge door 4 after the composting is completed.

Wherein, the specific principle of the feedback control unit controlling the opening or closing of the blower 5 according to the detected oxygen concentration and temperature is as follows:

When detecting that the oxygen concentration of the compost material is lower than 8%, the blower 5 is controlled to open, and when the oxygen concentration is higher than 18%, the blower 5 is controlled to be closed; The oxygen concentration of the material controls the opening of the blower 5, and when the temperature is lower than 75° C., the opening or closing of the blower is controlled according to the oxygen concentration of the compost material.

Wherein, the composting functional film 2 of the present invention can be set to be pulled up by a zipper, and the composting functional film 2 is a waterproof, breathable and odor-resistant film, which specifically includes a three-layer film structure of an inner protective film, an intermediate film and an outer protective film. The material of the intermediate film is PTFE, the material of the inner protective film and the outer protective film is an anti-ultraviolet type polyester fiber, and the composting functional film 2 can put external rainwater into the open-top container 1, composting Water vapor and carbon dioxide generated during the composting process can be emitted through the composting functional film 2, while odors and pathogenic bacteria generated during the composting process can be effectively blocked.

In the specific implementation process, at least one container-type film-covered static ventilation composting device can also be stacked together, and the specific number can be 2-4, thereby saving space and reducing floor space. In this embodiment, the number is 4. The specific schematic diagram is shown in Figure 6.

The composting method realized by using the container-type film-covered static ventilation composting device of the present invention specifically includes the following operations: uniformly load the compost material into the open-top container from the top through a feeding device or a forklift, pull up and fix the compost For functional film, the open-top containers are stacked one by one by a special container crane, and the automatic ventilation control system is turned on. After 2-3 weeks of high-temperature composting, the container crane lifts it to the ground, opens the side wall sealing door, and enters it with a forklift. The open-top container transports the materials attached to the compost, or after the composting is completed, the open-top container is lifted directly to the truck by the crane, and the truck is transported to the designated place for unloading.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (9)

1. a container-type film covers static ventilation composting device, it is characterized in that, comprise open top, compost functional membrane and Controlling System, described open top comprises casing and is arranged at the ventilation water leg of described bottom half, described compost functional membrane covers the top of described open top, at least one Dump gate is provided with along on the sidewall on long limit in described open top, sidewall along minor face is provided with the gas blower for the inner ventilation oxygen supply to described open top, described Controlling System is for controlling unlatching or the closedown of described gas blower.

2. container-type film as claimed in claim 1 covers static ventilation composting device, and it is characterized in that, described ventilation water leg is provided with air plate at top, and described air plate offers multiple ventilation hole.

3. container-type film as claimed in claim 1 or 2 covers static ventilation composting device, it is characterized in that, described ventilation water leg is provided with water discharge pipe in bottom, the air outlet of described gas blower is communicated with a vent-pipe by blower fan valve, described vent-pipe is communicated with the Single port of described water discharge pipe, and the another port of described water discharge pipe is provided with emptying valve.

4. container-type film as claimed in claim 1 covers static ventilation composting device, it is characterized in that, described Controlling System comprises oxygen concentration detector, temperature detector and feedback control unit, described feedback control unit respectively with described oxygen concentration detector, described hygrosensor and the electrical connection of described gas blower, described oxygen concentration detector and described hygrosensor are all arranged in the compost in described casing, for detecting oxygen concentration and temperature respectively, described feedback control unit is used for the unlatching or the closedown that control described gas blower according to the oxygen concentration detected and temperature.

5. container-type film as claimed in claim 1 covers static ventilation composting device, and it is characterized in that, described compost functional membrane is trilamellar membrane structure, comprises inner protection film, intermediate coat and outer protective membrane.

6. container-type film as claimed in claim 5 covers static ventilation composting device, and it is characterized in that, the material of described intermediate coat is PTFE, and the material of described inner protection film and described outer protective membrane is UV resistance line style trevira.

7. container-type film as claimed in claim 1 covers static ventilation composting device, and it is characterized in that, the width of described ventilation water leg is 200-300mm, and the degree of depth is 200-300mm.

8. container-type film as claimed in claim 2 covers static ventilation composting device, and it is characterized in that, the diameter of described ventilation hole is 8-12mm, and the distance between adjacent two ventilation holes is 200-400mm.

9. container-type film as claimed in claim 1 covers static ventilation composting device, and it is characterized in that, the blast of described gas blower is 3500-4500Pa, and power is 1-2KW.