CN219363468U - Dirty processing system of plant's excrement - Google Patents

Abstract

The utility model relates to the technical field of waste treatment, in particular to a system for treating excrement of a farm. The system for treating the excrement of the farm comprises an anaerobic fermentation system, a thermal energy storage system, a thermal energy conversion system and an aerobic fermentation system. The biogas obtained after the liquid manure is fermented in the anaerobic fermentation system is combusted in the heat energy storage system, a heat source is stored in hot water, the heat of the hot water is converted into hot air through the heat energy conversion system, and the hot air enters the aerobic fermentation system, so that the temperature of aerobic fermentation is increased, and the aerobic fermentation process is accelerated. The utility model fully utilizes the biogas energy obtained by anaerobic fermentation, converts the biogas energy into the heat source of the closed aerobic fermentation tank, reduces the carbon emission in the process of treating the cultivation waste, and simultaneously reduces the operation cost of the closed aerobic fermentation.

Description

Dirty processing system of plant's excrement

Technical Field

The utility model relates to the technical field of waste treatment, in particular to a system for treating excrement of a farm.

Background

The fecal sewage of large-scale farms is generally classified into liquid fecal sewage and solid fecal sewage. The common treatment mode of the liquid manure is anaerobic fermentation, the biogas slurry after anaerobic fermentation is returned to the field for utilization or further advanced treatment to reach the standard for discharge, and the biogas generated after anaerobic fermentation is usually discharged or burnt by a torch, so that the treatment mode not only causes energy waste, but also increases the carbon discharge. The common treatment method of the solid manure is to use a closed aerobic fermentation tank for anaerobic fermentation treatment, so that the produced compost product is reused. However, the closed fermentation tank has good heat preservation effect, but air is required to be blown in to provide enough oxygen for microorganisms, so that the fermentation temperature can be influenced by the outside air temperature, and particularly in partial cold areas, the air inlet temperature needs to be increased by means of electric heating and the like in winter, so that the solid waste treatment cost is greatly increased.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a system for treating fecal sewage in a farm. The biogas energy generated by anaerobic fermentation of the liquid manure is utilized and converted into a heat source of the solid manure sealed type aerobic fermentation tank, so that energy waste is not caused, carbon emission generated by biogas discharge can be reduced, the treatment efficiency of the solid manure aerobic fermentation can be improved, and the cost of the aerobic fermentation can be reduced.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a system for treating the fecal sewage of a farm comprises an anaerobic fermentation system, a thermal energy storage system, a thermal energy conversion system and an aerobic fermentation system;

the anaerobic fermentation system comprises an anaerobic fermentation tank and a biogas storage bag above the anaerobic fermentation tank;

the thermal energy storage system comprises a low pressure hot water boiler and a water storage tank; the bottom of the low-pressure hot water boiler is provided with a burner; the burner is connected with the biogas storage bag through a first pipeline; the low-pressure hot water boiler is connected with the water storage tank through a second pipeline;

the heat energy conversion system comprises an air heater and a radiator positioned in the air heater, wherein the radiator comprises a water inlet and a water outlet, the water inlet is connected with the water storage tank through a third pipeline, and the water outlet is connected with the low-pressure hot water boiler through a fourth pipeline; the air heater comprises an air inlet and an air outlet;

the aerobic fermentation system comprises a closed aerobic fermentation tank, a blower at the bottom of the closed aerobic fermentation tank and a stirring shaft in the closed aerobic fermentation tank; the stirring shaft is provided with an air outlet, and the air blower is communicated with the stirring shaft.

Further, a methane purifying device is arranged on the first pipeline.

Further, the low-pressure hot water boiler and the water storage tank are connected through a fifth pipeline; a pipeline pump is arranged in the fifth pipeline, and a first controller is arranged on the pipeline pump; the water storage tank is internally provided with a first temperature sensing probe which is connected with a first controller.

Further, a water supplementing pipe is arranged at the top of the low-pressure hot water boiler.

Further, a constant-pressure water supply pump is arranged on the third pipeline.

Further, the heat energy conversion system further comprises a second controller, and a second temperature sensing probe is arranged in the air outlet of the air heater; the second controller is arranged outside the air heater and is respectively connected with the constant-pressure water supply pump, the air inlet of the air heater and the second temperature sensing probe.

Further, the air inlet of the air heater is a shutter type.

Further, the heat sinks are multiple groups.

Further, the air outlets are multiple.

The beneficial effects of the utility model are as follows:

according to the utility model, hot water is prepared by using methane generated by anaerobic fermentation of liquid manure in a low-pressure hot water boiler combustion plant, air heating is realized by a plurality of groups of radiators arranged in the air heater, and hot air is blown into fermentation materials in the closed type aerobic fermentation tank through the blower of the closed type aerobic fermentation tank, so that the fermentation temperature of aerobic fermentation is increased, the fermentation process is accelerated, and the treatment capacity of the closed type aerobic fermentation tank is improved. The utility model fully utilizes the biogas energy obtained by anaerobic fermentation, converts the biogas energy into the heat source of the closed aerobic fermentation tank, reduces the carbon emission in the process of treating the cultivation waste, and simultaneously reduces the operation cost of the closed aerobic fermentation.

Drawings

FIG. 1 is a schematic diagram of a system for treating fecal sewage in a farm according to the present utility model

Reference numerals:

the device comprises a 1-anaerobic fermentation system, a 2-heat energy storage system, a 3-heat energy conversion system, a 4-aerobic fermentation system, a 5-anaerobic fermentation tank, a 6-biogas storage bag, a 7-low-pressure hot water boiler, an 8-water storage tank, a 9-burner, a 10-first pipeline, a 11-second pipeline, a 12-air heater, a 13-radiator, a 14-water inlet, a 15-water outlet, a 16-third pipeline, a 17-fourth pipeline, a 18-air inlet, a 19-air outlet, a 20-closed aerobic fermentation tank, a 21-blower, a 22-stirring shaft, a 23-air outlet, a 24-biogas purification device, a 25-fifth pipeline, a 26-pipeline pump, a 27-first controller, a 28-first temperature sensing probe, a 29-water supplementing pipe, a 30-constant-pressure water supply pump, a 31-second controller and a 32-second temperature sensing probe.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be further described below with reference to specific embodiments and drawings, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

It is to be understood that the terms "upper," "lower," "front," "rear," "left," "right," "horizontal," "top," "inner," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a group" is two or more.

Example 1

As shown in fig. 1, a system for treating the manure of a farm comprises an anaerobic fermentation system 1, a thermal energy storage system 2, a thermal energy conversion system 3 and an aerobic fermentation system 4;

the anaerobic fermentation system 1 comprises an anaerobic fermentation tank 5 and a biogas storage bag 6 above the anaerobic fermentation tank 5;

the thermal energy storage system 2 comprises a low pressure hot water boiler 7 and a reservoir 8; the bottom of the low-pressure hot water boiler 7 is provided with a burner 9; the burner 9 is connected with the biogas storage bag 6 through a first pipeline 10; the low-pressure hot water boiler 7 and the water storage tank 8 are connected through a second pipeline 11; the first pipeline 10 is provided with a methane purifying device 24;

the thermal energy conversion system 3 comprises an air heater 12 and a radiator 13 located inside the air heater 12; the radiators are in multiple groups, the radiator 13 comprises a water inlet 14 and a water outlet 15, the water inlet 14 is connected with the water storage tank 8 through a third pipeline 16, and the water outlet 15 is connected with the low-pressure hot water boiler 7 through a fourth pipeline 17; the air heater 12 includes an air inlet 18 and an air outlet 19; the air inlet 18 of the air heater is a shutter type;

the low-pressure hot water boiler 7 and the water storage tank 8 are also connected through a fifth pipeline 25; a pipeline pump 26 is arranged in the fifth pipeline 25, and a first controller 27 is arranged on the pipeline pump 26; a first temperature sensing probe 28 is arranged in the water storage tank 8, and the first temperature sensing probe 28 is connected with a first controller 27; the top of the low-pressure hot water boiler 7 is provided with a water supplementing pipe 29; a constant-pressure water supply pump 30 is arranged on the third pipeline 16;

the heat energy conversion system further comprises a second controller 31, and a second temperature sensing probe 32 is arranged in the air outlet 19 of the air heater 12; the second controller 31 is connected to the constant pressure water supply pump 30, the air inlet 18 of the air heater, and the second temperature sensing probe 32, respectively, at the outside of the air heater 12.

The aerobic fermentation system 4 comprises a closed aerobic fermentation tank 20, a blower 21 at the bottom of the closed aerobic fermentation tank 20 and a stirring shaft 22 in the closed aerobic fermentation tank 20; the stirring shaft 22 is provided with a plurality of air outlet holes 23, and the air blower 21 is communicated with the stirring shaft 22.

The working method of the system for treating the excrement of the farm comprises the following steps:

anaerobic fermentation is carried out on liquid manure of a farm in an anaerobic fermentation tank 5, generated biogas is collected in a biogas storage bag 6, the biogas in the biogas storage bag 6 is conveyed into a combustor 9 through a first pipeline 10, a biogas purification device 24 arranged on the first pipeline 10 purifies the biogas, heat generated by biogas combustion heats water in a low-pressure hot water boiler 7 to prepare hot water, and the prepared hot water is stored in a water storage tank 8 through a second pipeline 11; the first controller 27 receives temperature feedback of the first temperature sensing probe 28 in the water storage tank 8 and controls the pipeline pump 26 to start and stop, so that water circulation is formed between the water storage tank 8 and the low-pressure hot water boiler 7 through the fifth pipeline 25, and the water temperature in the water storage tank 8 is ensured to be relatively stable; in addition, water can be supplemented into the low-pressure hot water boiler 7 through a water supplementing pipe 29; the constant-pressure water supply pump 30 on the third pipeline 16 conveys hot water in the water storage tank 8 through the third pipeline 16, the hot water enters the radiator 13 through the water inlet 14, the second controller 31 receives temperature signal feedback of the second temperature sensing probe 32, and the flow of the constant-pressure water supply pump 30 and the opening size of the shutter type air inlet 18 are controlled to ensure that the air temperature of the air heater 12 is relatively stable; the discharged water of the radiator is conveyed back to the low-pressure hot water boiler 7 through the fourth pipeline 17 through the water outlet 15 for recycling; the radiator 13 releases heat to heat the air in the air heater 12, the hot air enters the blower 21 through the air outlet 19, the blower 21 blows the hot air into the stirring shaft 22 communicated with the hot air, and the hot air is blown into the aerobic fermentation material in the closed type aerobic fermentation tank 20 through a plurality of air outlet holes 23 on the stirring shaft 22.

The foregoing examples merely represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (9)

1. The system for treating the manure of the farm is characterized by comprising an anaerobic fermentation system (1), a thermal energy storage system (2), a thermal energy conversion system (3) and an aerobic fermentation system (4);

the anaerobic fermentation system (1) comprises an anaerobic fermentation tank (5) and a biogas storage bag (6) above the anaerobic fermentation tank (5);

the thermal energy storage system (2) comprises a low pressure hot water boiler (7) and a reservoir (8); the bottom of the low-pressure hot water boiler (7) is provided with a burner (9); the burner (9) is connected with the biogas storage bag (6) through a first pipeline (10); the low-pressure hot water boiler (7) and the water storage tank (8) are connected through a second pipeline (11);

the heat energy conversion system (3) comprises an air heater (12) and a radiator (13) positioned in the air heater (12), the radiator (13) comprises a water inlet (14) and a water outlet (15), the water inlet (14) is connected with the water storage tank (8) through a third pipeline (16), and the water outlet (15) is connected with the low-pressure hot water boiler (7) through a fourth pipeline (17); the air heater (12) comprises an air inlet (18) and an air outlet (19);

the aerobic fermentation system (4) comprises a closed aerobic fermentation tank (20), a blower (21) at the bottom of the closed aerobic fermentation tank (20) and a stirring shaft (22) in the closed aerobic fermentation tank (20); the stirring shaft (22) is provided with an air outlet hole (23), and the air blower (21) is communicated with the stirring shaft (22).

2. The system for treating plant manure according to claim 1, characterized in that the first pipeline (10) is provided with biogas purification means (24).

3. A plant waste treatment system according to claim 1, characterized in that the low pressure hot water boiler (7) and the reservoir (8) are also connected by a fifth pipe (25); a pipeline pump (26) is arranged in the fifth pipeline (25), and a first controller (27) is arranged on the pipeline pump (26); a first temperature sensing probe (28) is arranged in the water storage tank (8), and the first temperature sensing probe (28) is connected with a first controller (27).

4. The system for treating plant manure according to claim 1, characterized in that the top of the low pressure hot water boiler (7) is provided with a water replenishment pipe (29).

5. The system for treating the fecal sewage of farm according to claim 1, characterized in that the third pipeline (16) is provided with a constant pressure water supply pump (30).

6. The system for treating plant waste according to claim 1, wherein the thermal energy conversion system (3) further comprises a second controller (31), and wherein a second temperature sensing probe (32) is arranged in the air outlet (19) of the air heater (12); the second controller (31) is arranged outside the air heater (12) and is respectively connected with the constant-pressure water supply pump (30), the air inlet (18) of the air heater (12) and the second temperature sensing probe (32).

7. The system for treating plant waste according to claim 1, wherein the air inlet (18) of the air heater (12) is a louvered window.

8. A plant waste treatment system according to claim 1, characterized in that the radiators (13) are in groups.

9. A plant waste treatment system according to claim 1, characterized in that the number of air outlet holes (23) is a plurality.