CN2600443Y - Anaerobic oxygen integral compost reaction device - Google Patents

Abstract

The utility model relates to an anaerobic and aerobic integrated reaction device for composting solid organic waste, which comprises a fermentation tank, a ventilation system, a stirring system and a heating system; The plate divides the fermentation tank into two parts, the stirring shaft is set in the middle of the fermentation tank and installed in the shaft seat, driven by the motor; the stirring blade is connected with the stirring shaft, and there are hollow air passages and ventilation holes on it; the fermentation tank The top of the tank is provided with material inlet and outlet, air outlet, liquid inlet, and air inlet; the surrounding and bottom of the fermentation chamber are equipped with a circulating water bath heating jacket, with water inlet and outlet on it, and the bottom of the fermentation chamber is provided with an outlet extending from the bottom of the heating jacket. Liquid pipe, the liquid outlet pipe is connected with the liquid inlet. The fermentation chamber of the utility model is airtight, and the ventilation can be freely selected or closed to realize anaerobic digestion and aerobic composting reaction in the same equipment; the temperature in the fermentation chamber is uniform by adopting a circulating water bath heating jacket; Can be used in series.

Description

Anaerobic and aerobic integrated composting reaction device

1. Technical field

The utility model relates to a garbage composting reaction device, in particular to an organic matter anaerobic and aerobic integrated composting reaction device.

2. Background technology

Aerobic composting of municipal waste after anaerobic digestion can make high-quality organic compost. At present, due to the limitation of fermentation equipment, in waste treatment, only anaerobic digestion is used to produce biogas, or only aerobic composting is performed. In rural areas, anaerobic digestion is used to produce biogas, but biogas residues are directly used as fertilizer without aerobic composting. Anaerobic digestion, compost quality is also poor. The devices for anaerobic digestion to produce biogas include air bag type, hydraulic type, floating cover type and egg-shaped fermentation bins, etc.; the devices for aerobic composting include tower type and drum type fermentation bins. None of these devices can complete anaerobic digestion and aerobic composting at the same time, and the effect of garbage treatment is not good.

3. Contents of the invention

The purpose of this utility model is: in order to solve the problem that anaerobic digestion and aerobic composting cannot be continuously carried out in the same reactor, this utility model provides a method that can perform anaerobic digestion first, and then carry out aerobic fermentation of organic matter. Anaerobic and aerobic integrated composting reaction device for making high-quality organic fertilizer from garbage

The technical solution adopted by the utility model is: it mainly includes a fermentation tank, a stirring system, a ventilation system, and a heating system; wherein a sieve plate is arranged in the fermentation tank, and a sieve hole is arranged on the sieve plate, and the sieve plate divides the fermentation tank into two parts , the upper part is a filter bed type fermentation bin that can filter out the acidified liquid produced during the anaerobic digestion process of garbage, and the lower part is a liquid collection area; the stirring system includes a stirring shaft installed in the middle of the fermentation bin and installed in the shaft seat, stirring The shaft is a hollow metal tube, and blades with air holes are installed on the stirring shaft, and the stirring shaft is driven by a motor; the ventilation system includes a blower, an air pipe, air holes on the blades, an air inlet at the top of the stirring shaft, air pipes and The blower is connected; the heating system includes the circulating water bath heating jacket around and at the bottom of the fermentation tank and the constant temperature hot water inside. The heating jacket is provided with a water inlet and a water outlet, and is connected to the water pump and the constant temperature hot water source through the infusion pipe to make the hot water circulate. . The top of the fermentation tank is provided with inlet and outlet, gas outlet and liquid inlet, and the gas outlet is connected with the gas storage tank through the gas pipe; The pipe is connected to the liquid inlet through a water pump, and the acidified liquid in the liquid collection area can be pumped into the fermentation chamber to adjust the water required in the fermentation chamber during the aerobic composting stage.

The utility model has remarkable beneficial effects:

1. The utility model is equipped with a circulating water bath heating jacket, and the temperature is controlled below 100°C, which can meet the temperature requirements of anaerobic digestion and aerobic composting of garbage, and the water bath heating is milder than other heating methods, and will not be caused by a sudden increase in temperature. Or reduce to kill microorganisms to destroy the degradation process, and ensure uniform heating.

2. The utility model is equipped with a sieve plate in the fermenter, which divides the fermenter into two parts, and serves as a filter bed type anaerobic fermentation bin in the anaerobic digestion stage, and the lower part can collect the acidification liquid, and in the aerobic composting stage , through backflow, the acidified liquid collected in the liquid collection area can be conveniently returned to the fermentation bin to adjust the water required for aerobic composting.

3. The utility model is equipped with a ventilation system on the mixing blade, and the ventilation or non-ventilation is selected at different stages to realize anaerobic digestion and aerobic composting in the same equipment.

4. In the anaerobic digestion stage, the utility model is a filter bed digestion method, which can be used in series.

4. Description of drawings

Fig. 1 is the composition schematic diagram of the utility model embodiment

Figure 2 is a schematic diagram of the use of fermentation tanks in series

Figure 3 is a schematic cross-sectional view of the structure of the fermentation chamber

Figure 4 is a partial enlarged view of the stirring shaft and blades

5. Specific implementation

The embodiment of the present utility model is shown in Fig. 1, Fig. 3, Fig. 4, and it mainly comprises fermentation tank 19, stirring system, ventilation system, heating system; There is a sieve plate 10, and the sieve plate 10 is provided with a sieve hole 26. The sieve plate 10 divides the fermenter 19 into two parts, and the upper part is a filter bed type fermentation bin that can filter out the acidified liquid produced during the anaerobic digestion process. 3. The lower part is the liquid collection area 2; the stirring system includes a stirring shaft 13 located in the middle of the fermentation bin 3 and installed in the shaft seat 20, the shaft 13 is a stainless steel hollow tube driven by the motor 5; the ventilation system includes a shaft connected to the shaft 13 The two layers of stirring blades 14 together, the blade 14 is provided with a hollow air passage 23 and a vent hole 24 communicating with the hollow air passage 25 of the shaft 13, and the top of the shaft 13 is an air inlet, which is connected to the blower 8 through an air pipe, The gas sent by the blower enters fresh air into the fermentation bin 3 through the air duct, the hollow air passage 25 of the shaft 13, the hollow air passage 23 on the blade 14, and the air hole 24, so as to ensure the supply of oxygen in the aerobic composting stage; the heating system includes The circulating water bath heating jacket 17 arranged around and at the bottom of the fermentation tank 19 has a constant temperature hot water 21 inside the heating jacket 17, and the constant temperature hot water 21 is supplied by a constant temperature hot water source through the water pump 22, the water outlet 11 at the bottom of the heating jacket 17, and the water inlet on the side 7 circulation supply; the temperature control socket 18 is located on the side wall of the fermentation tank 19 between the two layers of stirring blades 14 and extends out of the heating jacket 17; the top of the fermentation bin 3 is provided with an inlet and outlet 4, an air outlet 6, and port 15, the gas outlet 6 is connected to the gas storage tank 9 through the gas delivery pipe; the bottom of the liquid collection area 2 is provided with a liquid outlet pipe 12 stretching out from the heating jacket 17, and the liquid outlet pipe 12 is connected to the liquid inlet 15 through the water pump 1. The acidified liquid in the liquid collection area 2 is pumped into the fermentation bin 3 to adjust the moisture required in the fermentation bin during the aerobic composting stage. As shown in Figure 2, the fermentors 19 are used in series in the anaerobic digestion stage.

The working process of the present utility model is: put the garbage raw material into the fermentation tank 19 from the inlet and outlet 4, first carry out anaerobic digestion, adjust the water content of the garbage to 50-70%, and then seal the fermentation tank 19, the garbage anaerobic digestion process The acidified liquid produced in the sieve plate 10 flows into the liquid collection area 2 at the bottom of the fermenter 19 through the sieve hole 26 on the sieve plate 10, and the fermenter 19 used in series makes the acidified liquid in different digestion stages reflux in each fermenter to feed fresh feed Inoculate and adjust the internal load of each fermenter; the generated biogas is input into the gas storage tank 9 through the gas pipeline for standby. After the anaerobic digestion is completed, oxygen is supplied by a blower, and the air enters the fermentation chamber 3 through the air pipe, the air inlet, the hollow air passage 25 of the stirring shaft 13, the hollow air passage 23 of the blade 14 and the ventilation hole 24, While rotating, fresh air is continuously input into the garbage after anaerobic digestion to meet the oxygen needs of microorganisms during aerobic composting. In order to ensure the moisture content in the aerobic composting process, the water pump 1 returns the acidified liquid in the liquid collection area 2 to the fermentation bin 3 through the liquid outlet pipe 12, the infusion pipe, and the liquid inlet pipe 15 to adjust the fermentation bin 3 in the aerobic composting stage. moisture required.

Claims (4)

1. An anaerobic-aerobic integrated composting reaction device, which comprises a fermenter (19), a stirring system, a ventilation system, and a heating system, and is characterized in that: a sieve plate (10) is provided in the fermenter (19), and the sieve The plate (10) is provided with a sieve hole (26). The upper part of the sieve plate (10) is a filter bed type fermentation chamber (3) that can filter out the acidified liquid produced in the anaerobic digestion process of the garbage, and the lower part is a liquid collection chamber. District (2); the stirring system includes the stirring shaft (13) located in the middle of the fermenter (19) and installed in the shaft seat (20), and the shaft (13) is driven by the motor (5); the ventilation system includes the blower (8) , the air duct, the blade (14) connected together with the shaft (13), the air inlet at the top of the shaft (13), the blade (14) is provided with a hollow air channel (23) and a ventilation hole (24), the air intake The outlet is connected to the air blower (8) through the air pipe; the heating system includes a circulating water bath heating jacket (17) around and at the bottom of the fermentation tank (19), and a circulating water bath constant temperature hot water for heating the fermentation tank (19) is arranged in the heating jacket (17). (21), the bottom of the heating jacket (17) is provided with a water outlet (11), and the side is provided with a water inlet (7), which is connected with a water pump (1) and a constant temperature hot water source by an infusion tube; There are material inlet and outlet (4), gas outlet (6) and liquid inlet (15), and the gas outlet (6) is connected with the gas storage tank (9) through the gas pipeline; the bottom of the fermenter (19) is provided with a heating The liquid outlet pipe (12) at the bottom of the cover (17), the liquid outlet (12) links to each other with the liquid inlet (15) by the water pump (1). 2. The anaerobic-aerobic integrated composting reaction device according to claim 1, characterized in that the fermenter (19) is a cylinder and is fixed on the bracket (16). 3. The anaerobic-aerobic integrated composting reaction device according to claim 1, characterized in that: the stirring shaft (13) is made of stainless steel, the upper blades (14) are double-layered, and the temperature control socket (18) is located at On the side wall of the fermentation bin (19) between the two layers of blades (14) and stretch out the heating jacket (17). 4. The anaerobic-aerobic integrated composting reaction device according to claim 1, characterized in that: in the anaerobic digestion stage, the fermenters (19) are connected in series.

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