CN216472766U

CN216472766U - Air distribution system for aerobic fermentation of river and lake dredged sediment

Info

Publication number: CN216472766U
Application number: CN202123175461.7U
Authority: CN
Inventors: 侯明昱; 胡保安; 孙越; 黄佳音; 谭相君
Original assignee: China Xiongan Ecological Construction Investment Co ltd; Cccc Tianjin Ecological Environmental Protection Design And Research Institute Co ltd
Current assignee: China Xiongan Ecological Construction Investment Co ltd; Cccc Tianjin Ecological Environmental Protection Design And Research Institute Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-05-10
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses an air distribution system for aerobic fermentation of river and lake dredging sediment, which comprises a fan, a heating and humidifying device and an air distribution device, wherein the heating and humidifying device comprises a shell, a heating pipe which is in a spiral shape and is arranged in the shell, and an ultrasonic disperser which is arranged at the bottom of the shell; the air distribution device comprises two main ventilation pipes and a plurality of branch ventilation pipes which are alternately arranged on two sides of the main ventilation pipes, wherein vertical air pipes are arranged on the main ventilation pipes and the branch ventilation pipes, a plurality of branch pipes are arranged in the middle and at the top of each vertical air pipe along the circumferential direction, end covers are arranged at the ports of the branch ventilation pipes and the branch pipes, and a plurality of small holes are formed in the pipe walls and the end covers of the branch pipes, the pipe walls and the end covers of the branch ventilation pipes and the main ventilation pipes respectively; the outlet of the fan is connected with the inlet of the heating and humidifying device, and the outlet of the heating and humidifying device is communicated with the inlet of the ventilation main pipe. The device ensures that all parts of the dredged sediment can be fully contacted with air, and ensures that organic matters in the dredged sediment are fully decomposed by aerobic microorganisms.

Description

Air distribution system for aerobic fermentation of river and lake dredged sediment

Technical Field

The utility model belongs to dredged sediment aerobic fermentation field specifically relates to a cloth wind system that is used for river lake dredged sediment aerobic fermentation.

Background

The problem of road removal of river and lake dredging sediment serving as an industrial byproduct of dredging engineering is always a key problem for limiting the application of river and lake dredging engineering. With the implementation of the 'method for preventing and treating the solid waste from polluting the environment' of the people's republic of China', the simple landfill and stockpiling cannot be adapted to the current situation and policy, and the resource utilization of the river and lake dredging sediment is the future development direction.

The prior art for recycling dredged sediment comprises the preparation of non-sintered building materials and the preparation of greening planting soil. Because the dredged sediment has huge yield and the non-sintered building materials still have problems in the aspects of durability, cost and the like, the preparation of the green planting soil by the dredged sediment becomes the research focus in the prior dredged sediment resource utilization technology. A certain amount of flocculant is added into the dredged sediment in the dewatering and volume reduction processes, and due to the existence of the flocculant and the granularity composition of the dredged sediment, the dredged sediment after dewatering has high viscosity and is easy to harden; the dredged sediment has high density, is easy to become compact in the aerobic fermentation process, is not beneficial to contact of auxiliary materials and organic matters in the dredged sediment with aerobic microorganisms, and is easy to cause fermentation failure. Compared with the traditional aerobic fermentation raw materials, the dredged sediment has the advantages of low organic matter content, high early fermentation difficulty, low temperature rise speed, high requirement on environmental temperature and obvious influence by seasons. At present, no aerobic fermentation engineering example using dredged sediment as a main raw material exists.

Disclosure of Invention

In order to solve the technical problem, the utility model provides an air distribution system for aerobic fermentation of river and lake dredging sediment, which can uniformly supply air for the pile body, can raise the temperature, can humidify and is energy-saving and environment-friendly.

Therefore, the utility model adopts the following technical scheme:

an air distribution system for aerobic fermentation of river and lake dredging sediment comprises a fan, a heating and humidifying device and an air distribution device: the heating and humidifying device comprises a shell, a spiral heating pipe arranged in the shell and an ultrasonic disperser arranged at the bottom in the shell, wherein the heating pipe is connected with a power supply and used for heating air; the ultrasonic disperser is used for dispersing water stored at the bottom of the shell into water mist to increase the air humidity; the air distribution device comprises two main ventilation pipes, a plurality of branch ventilation pipes are alternately arranged on the left side and the right side of each main ventilation pipe, vertical air pipes are arranged on the main ventilation pipes and the branch ventilation pipes, a plurality of branch pipes communicated with the vertical air pipes are uniformly arranged in the middle and at the top ends of the vertical air pipes along the circumferential direction, end covers are arranged at the ports of the branch ventilation pipes and the branch pipes, and a plurality of small holes are formed in the pipe walls and the end covers of the branch pipes, the pipe walls and the end covers of the branch ventilation pipes and the pipe walls of the main ventilation pipes extending into the dredged sediment; the outlet of the fan is connected with the inlet of the heating and humidifying device, and the outlet of the heating and humidifying device is communicated with the inlets of the two ventilation main pipes.

Preferably, a transparent vertical pipe is further arranged on one side of the bottom of the heating and humidifying device, a sealing cover is mounted on an opening in the top of the vertical pipe, and the bottom of the vertical pipe is communicated with the bottom of the heating and humidifying device and used for indicating the liquid level in the heating and humidifying device and adding water into the heating and humidifying device when the liquid level is low.

Preferably, each of said ventilation manifolds has a diameter of 20-50 cm; the distance between the ventilation branch pipes on the same side of the ventilation main pipe is 100-150cm, each ventilation branch pipe is 70-100cm long, and the diameter is 20-50 cm.

Preferably, the vertical air pipes are arranged on the ventilation main pipe every 50-75cm, and each vertical air pipe is arranged on each ventilation branch pipe, wherein the height of each vertical air pipe is 80-130cm, and the diameter of each vertical air pipe is 20-50 cm.

Preferably, four branched ducts are respectively arranged at the middle part and the top part of each vertical air duct.

Preferably, the included angle between the branch pipe arranged in the middle of the vertical air pipe and the vertical air pipe is 30-45 degrees, and the branch pipe inclines downwards; the branch pipes arranged at the top of the vertical air pipes are vertical to the vertical air pipes.

Preferably, the small holes on the tube wall of the branch tube are respectively provided with a row in the upper, lower, left and right directions of the branch tube, and the diameter of the small holes is 2-5 cm; each row of small holes is 4-8; the small holes on the ventilation main pipe are uniformly distributed along the radial direction and the circumferential direction, and the diameter of each small hole is 2-5 cm.

The utility model discloses following beneficial effect has:

1. the utility model effectively solves the defects of low ventilation efficiency, poor ventilation effect and the like in the aerobic fermentation process of the dredged sediment in rivers and lakes, ensures that all parts of the dredged sediment can be fully contacted with the air, promotes the growth and propagation of aerobic microorganisms, ensures the implementation of aerobic fermentation, and can ensure that organic matters in the dredged sediment can be fully decomposed and utilized;

2. in the aerobic fermentation process, when the water content of the dredged sediment is too low, the air humidity can be increased by the heating and humidifying device, and necessary water is provided for the life activities of microorganisms;

3. when the environmental temperature is too low, the air can be heated by the heating and humidifying device in the early stage of fermentation, so that the temperature of dredged sediment is increased, and the normal life activity of microorganisms is ensured.

Drawings

Fig. 1 is a schematic view of an axial measurement structure of the air distribution system of the present invention;

FIG. 2 is a schematic cross-sectional view of a heating device in an air distribution system according to the present invention;

fig. 3 is a schematic structural view of the vertical air pipe in the air distribution system of the present invention.

In the figure:

1. fan 2, humidifying and heating device 3, main ventilation pipe 4, branch ventilation pipe 5, vertical wind pipe 6 and branch ventilation pipe

7. Heating pipe 8, ultrasonic disperser 9, water adding device

Detailed Description

The structure of the air distribution system for aerobic fermentation of river and lake dredging sediment according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1-3, the aerobic fermentation air distribution system for river and lake dredging sediment of the present invention comprises: a fan 1, a humidifying and heating device 2 and an air distribution device consisting of a main ventilation pipe 3, a branch ventilation pipe 4, a vertical air pipe 5 and a branch pipe 6.

Specifically, the heating and humidifying device comprises a shell, a spiral heating pipe 7 arranged in the shell, and an ultrasonic disperser 8 arranged at the bottom in the shell, wherein the heating pipe 7 is connected with a power supply and used for heating air. The ultrasonic disperser 8 is used for dispersing the water stored at the bottom of the shell into water mist to increase the air humidity.

The air distribution device comprises two ventilation main pipes 3, a plurality of ventilation branch pipes 4 are alternately arranged on the left side and the right side of each ventilation main pipe 3, vertical air pipes 5 are respectively arranged on the ventilation main pipes 3 and the ventilation branch pipes 4, a plurality of branch pipes 6 communicated with the vertical air pipes 5 are respectively and uniformly arranged in the middle and at the top ends of the vertical air pipes 5 along the circumferential direction, end covers are respectively arranged at the ports of the ventilation branch pipes 4 and the branch pipes 6, and a plurality of small holes are respectively formed in the pipe walls and the end covers of the branch pipes 6, the pipe walls and the end covers of the ventilation branch pipes 4 and the pipe walls of the ventilation main pipes 3 extending into dredging sediment; the outlet of the fan 1 is connected with the inlet of the heating and humidifying device 2, and the outlet of the heating and humidifying device 2 is communicated with the inlets of the two ventilation main pipes 3.

In addition, a transparent vertical pipe is further arranged on one side of the bottom of the heating and humidifying device 2, a sealing cover is mounted on an opening in the top of the vertical pipe, and the bottom of the vertical pipe is communicated with the bottom of the heating and humidifying device and used for indicating the liquid level in the heating and humidifying device and adding water into the heating and humidifying device when the liquid level is low.

Typically, each of the ventilation manifolds 3 has a diameter of 20-50 cm; the distance between the ventilation branch pipes 4 on the same side of the ventilation main pipe 3 is 100-150cm, each ventilation branch pipe 4 is 70-100cm in length, and the diameter is 20-50 cm.

Preferably, the vertical air pipes are arranged on the ventilation main pipe every 50-75cm, each vertical air pipe is arranged on each ventilation branch pipe, the height of each vertical air pipe is 80-130cm, and the diameter of each vertical air pipe is 20-50 cm; the number of the branch pipes is four, the included angle between the branch pipe arranged in the middle of each vertical air pipe and each vertical air pipe is 30-45 degrees, and the branch pipes are inclined downwards; the branch pipes arranged at the top of the vertical air pipes are vertical to the vertical air pipes.

When necessary, the air is heated and humidified through the heating pipe 7 and the ultrasonic disperser 8, and the heated and humidified air enters the interior of the dredged sediment through the air distribution device, so that the temperature and the humidity of the dredged sediment are improved, and the proper temperature and moisture are provided for aerobic microorganisms.

Because each ventilation main pipe 3 extends into the dredged sediment, a plurality of small holes on the ventilation main pipe 3 can convey air for the environment around the ventilation main pipe 3; the plurality of ventilation branch pipes 4 are distributed on the two sides of the ventilation main pipe in a left-right alternating mode, so that the ventilation efficiency can be greatly improved, the cost of an air distribution system is reduced, and excessive heat is prevented from being taken away due to overlarge ventilation quantity caused by excessive pipeline laying. The vertical air pipe can provide sufficient oxygen and moisture for the dredged sediment at different heights. The included angle between the branch pipe in the middle of the vertical air pipe and the vertical air pipe is 30 degrees, the direction is inclined downwards, oxygen and moisture can be provided for dredging bottom mud below, and the contact efficiency is improved. The water adding device is communicated with the humidifying and heating device, a cover covers the opening at the top of the water adding device, and the cover is closed during ventilation so as to prevent water from overflowing.

Claims

1. The utility model provides an air distribution system that is used for aerobic fermentation of river lake dredging bed mud, includes fan, heating humidification device and air distribution device, its characterized in that:

the heating and humidifying device comprises a shell, a spiral heating pipe arranged in the shell and an ultrasonic disperser arranged at the bottom in the shell, wherein the heating pipe is connected with a power supply and used for heating air; the ultrasonic disperser is used for dispersing water stored at the bottom of the shell into water mist to increase the air humidity;

the air distribution device comprises two main ventilation pipes, a plurality of branch ventilation pipes are alternately arranged on the left side and the right side of each main ventilation pipe, vertical air pipes are arranged on the main ventilation pipes and the branch ventilation pipes, a plurality of branch pipes communicated with the vertical air pipes are uniformly arranged in the middle and at the top ends of the vertical air pipes along the circumferential direction, end covers are arranged at the ports of the branch ventilation pipes and the branch pipes, and a plurality of small holes are formed in the pipe walls and the end covers of the branch pipes, the pipe walls and the end covers of the branch ventilation pipes and the pipe walls of the main ventilation pipes extending into the dredged sediment;

the outlet of the fan is connected with the inlet of the heating and humidifying device, and the outlet of the heating and humidifying device is communicated with the inlets of the two ventilation main pipes.

2. The air distribution system of claim 1, wherein: the bottom of the vertical pipe is communicated with the bottom of the heating and humidifying device and used for indicating the liquid level in the heating and humidifying device and adding water into the heating and humidifying device when the liquid level is lower.

3. The air distribution system of claim 1, wherein: the diameter of each ventilation main pipe is 20-50 cm.

4. The air distribution system of claim 1, wherein: the distance between the ventilation branch pipes on the same side of the ventilation main pipe is 100-150cm, each ventilation branch pipe is 70-100cm long, and the diameter is 20-50 cm.

5. The air distribution system of claim 1, wherein: and arranging one vertical air pipe on each ventilation branch pipe every 50-75cm on the main ventilation pipe, wherein the height of each vertical air pipe is 80-130cm, and the diameter of each vertical air pipe is 20-50 cm.

6. The air distribution system of claim 1, wherein: the four branch pipes are respectively arranged in the middle and at the top of each vertical air pipe.

7. The air distribution system of claim 6, wherein: the included angle between the branch pipe arranged in the middle of the vertical air pipe and the vertical air pipe is 30-45 degrees, and the branch pipe inclines downwards; the branch pipes arranged at the top of the vertical air pipes are vertical to the vertical air pipes.

8. A wind distribution system according to any of claims 1-7, characterized in that: the small holes on the tube wall of the branch tube are respectively provided with a row in the upper, lower, left and right directions of the branch tube, and the diameter of each small hole is 2-5 cm; each row of small holes has 4-8.

9. The air distribution system of claim 8, wherein: the small holes on the ventilation main pipe are uniformly distributed along the radial direction and the circumferential direction, and the diameter of each small hole is 2-5 cm.