High-efficiency anaerobic and biogas power generation recycling device for high-concentration humus sewage

Abstract

The utility model provides an efficient anaerobic and biogas power generation recycling device for high-concentration humus sewage, which relates to the technical field of resource utilization and comprises a sewage treatment system, a biogas purification system and a biogas utilization system. Sewage sequentially enters the first anaerobic fermentation bin, the second anaerobic fermentation bin, the third anaerobic fermentation bin and the fourth anaerobic fermentation bin from the water inlet pool for anaerobic fermentation, and biogas slurry generated in the anaerobic fermentation process can be used for field returning irrigation after being treated by the dosing pool and the sludge bin; and the generated biogas is purified by the biogas purification system and then is used for generating power by using the generator set, and the generated electric energy is reused for the aeration fan and the sludge pump of the device and is used for supplementing power for other processes in a factory area, so that the cyclic utilization of sewage resource is realized. The utility model not only can solve the problems of low sewage treatment efficiency, large energy consumption and the like, but also has the advantages of high automation degree, flexibility, convenience, low operation cost and the like.

Description

Technical Field

[0001] This utility model provides a device for the efficient anaerobic digestion and biogas power generation recycling of high-concentration humic wastewater, which relates to the field of resource utilization technology. Background Technology

[0002] With the rapid development of livestock and poultry farming and the widespread adoption of large-scale agricultural farming, the discharge of wastewater from livestock farming is increasing year by year. This wastewater contains a large amount of organic matter and harmful substances, characterized by high concentration, easy putrefaction, and strong odor. If discharged directly without effective treatment, it will cause serious pollution to water bodies, soil, and the ecological environment. Traditional wastewater treatment technologies often suffer from low efficiency, high energy consumption, and insufficient resource utilization when treating this type of high-concentration, putrefactive wastewater, making it difficult to meet the requirements of modern environmental protection and sustainable development. Therefore, the development of a high-efficiency, energy-saving, and resource-efficient wastewater treatment and recycling device has become an urgent need. This patent aims to provide a high-efficiency anaerobic treatment and biogas power generation recycling device for high-concentration, putrefactive wastewater. Through innovative design of the anaerobic reactor and biogas power generation system, it achieves efficient degradation of organic matter in wastewater and energy recovery. This device can not only significantly reduce the concentration of pollutants in wastewater, but also convert the biogas produced by anaerobic fermentation into electricity, realizing energy recycling and reducing operating costs. Meanwhile, this device features a compact structure, simple operation, and strong adaptability, and can be widely used in fields such as rural livestock wastewater treatment. It provides an efficient and environmentally friendly solution for the treatment and resource utilization of high-concentration organic wastewater, contributing to green and low-carbon development. Utility Model Content

[0003] The purpose of this invention is to provide a high-efficiency anaerobic digestion and biogas power generation recycling device for high-concentration humic wastewater, in order to solve the problems mentioned in the background art, such as low treatment efficiency, easy generation of secondary pollution, and high energy consumption of high-concentration humic wastewater. In addition, this device can also realize the fully automated technology of "turning waste into treasure" for high-concentration humic wastewater, and has the advantages of high degree of automation, flexibility and convenience, and low operating cost.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a high-concentration humic wastewater high-efficiency anaerobic digestion and biogas power generation recycling device, comprising a wastewater treatment system, a biogas purification system and a biogas utilization system.

[0005] The wastewater treatment system includes an inlet tank, a high-concentration anaerobic fermentation chamber, a biogas storage tank, a chemical dosing tank, a sludge storage tank, and a liquid storage tank. The inlet tank has an inlet and a short partition in the middle, dividing it into inlet tank one and inlet tank two. Wastewater enters inlet tank one through the inlet and overflows into inlet tank two through the short partition, which acts as a flow stabilizer. Inlet tank two has an outlet at its bottom, through which wastewater flows by gravity into anaerobic fermentation chamber one.

[0006] The high-concentration anaerobic fermentation chamber includes anaerobic fermentation chamber one, anaerobic fermentation chamber two, anaerobic fermentation chamber three, and anaerobic fermentation chamber four. A partition two connects anaerobic fermentation chamber one and anaerobic fermentation chamber two; a partition three connects anaerobic fermentation chamber two and anaerobic fermentation chamber three; and a partition four connects anaerobic fermentation chamber three and anaerobic fermentation chamber four. An overflow outlet is located at the upper end of partition three. Water passages are located at the bottom ends of partitions two and four. A partition five connects anaerobic fermentation chamber four and the dosing tank. An overflow pipe is installed on partition five. When the liquid level in the chamber is higher than the overflow pipe, the biogas slurry from anaerobic fermentation chamber four enters the dosing tank through the overflow pipe (wastewater is degraded into biogas slurry after anaerobic fermentation). The biogas storage tank has a gas outlet and is fixed to the top of the high-concentration anaerobic fermentation chamber. A solar canopy is installed above the biogas storage tank. The dosing tank is equipped with a micro-aeration device. Appropriate amounts of flocculant and coagulant are added to the tank, and the biogas slurry, after being mixed by micro-aeration, enters the sludge bin through the outlet. The sludge bin is connected to a storage tank via a pipeline. After sedimentation, the supernatant flows by gravity through the pipeline to the storage tank for storage and irrigation. An external sludge pump is installed in the sludge bin. The sludge pump, through a main sludge discharge pipe and valved branch pipes, periodically discharges sludge from anaerobic fermentation bins one, two, three, and four, as well as the sludge bin itself.

[0007] The biogas purification system includes an equipment compartment, a positive and negative pressure protector, a desulfurization tank, and a gas-liquid separator. The positive and negative pressure protector, desulfurization tank, and gas-liquid separator are all located within the equipment compartment, which is situated below the inlet pool. The equipment compartment is equipped with a second partition, and the positive and negative pressure protector, desulfurization tank, and gas-liquid separator are located above the second partition. Wastewater undergoes anaerobic fermentation in anaerobic fermentation chambers one, two, three, and four, producing a large amount of biogas. The biogas is piped through an outlet to the positive and negative pressure protector, which is connected to the desulfurization tank. The desulfurization tank is connected to the gas-liquid separator, which is connected to a one-way air inlet valve. The one-way air inlet valve is connected to a booster fan.

[0008] The biogas utilization system includes a booster fan, a flame arrester, a generator set, and a power generation compartment. The booster fan is located below the second partition of the equipment compartment. The booster fan is connected to the flame arrester via a pipe. A flow-limiting valve is installed after the flame arrester to prevent biogas backflow. The flow-limiting valve is connected to the generator set. The flame arrester, flow-limiting valve, and generator set are all located in the power generation compartment. The generator set can convert the transmitted biogas into electrical energy for power generation.

[0009] Preferably, the solar roof is made of polycarbonate panels, which facilitates light transmission and has the effect of increasing and preserving heat, thus ensuring the activity of microorganisms in the high-concentration anaerobic fermentation chamber, thereby improving the fermentation rate, degradation rate and gas production efficiency.

[0010] Preferably, the generated electricity will be reused in the aeration blower and sludge pump, that is, biogas will be produced through anaerobic fermentation, and the biogas will be used to generate electricity, which will then be reused for the process electricity of the device itself, thereby realizing the recycling of wastewater resources.

[0011] Preferably, the process flow of this device is as follows: wastewater enters the high-concentration anaerobic fermentation chamber from the inlet tank through the outlet. After anaerobic fermentation in anaerobic fermentation chambers 1, 2, 3, and 4, the wastewater enters the dosing tank. After adding appropriate amounts of flocculant and coagulant, a micro-aeration physical method is used to enhance the coagulation and sedimentation of suspended solids. The biogas slurry enters the sludge chamber, where gravity causes the solid particles in the biogas slurry to gradually settle. The supernatant flows by gravity to the storage tank as the liquid level rises. The sludge deposited in anaerobic fermentation chambers 1, 2, 3, and 4, as well as the sludge chamber, is periodically discharged by a sludge pump. A large amount of biogas is generated during the anaerobic fermentation process. The biogas is stored in a biogas storage tank. When needed, it is desulfurized and dehydrated by a desulfurization tank and a gas-liquid separator, and then supplied to the generator set by a booster fan to generate electricity. The generated electricity is reused in the aeration fans and sludge pumps of this device to save on operating costs.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model is a high-concentration humic wastewater high-efficiency anaerobic and biogas power generation recycling device, which has anaerobic fermentation chamber one, anaerobic fermentation chamber two, anaerobic fermentation chamber three, and anaerobic fermentation chamber four, a multi-stage high-concentration anaerobic fermentation chamber. By enhancing the degradation efficiency of organic matter, it improves the biogas production and quality, thereby increasing the total biogas power generation and power generation efficiency.

[0014] 2. This utility model provides a high-efficiency anaerobic digestion and biogas power generation recycling device for high-concentration humic wastewater. The biogas produced by anaerobic digestion is used for biogas power generation. The generated electricity can be recycled for the process power of the device itself and to supplement the process power in the plant area, thereby saving energy consumption, reducing dependence on fossil fuels, and lowering operating costs.

[0015] 3. This utility model provides a high-efficiency anaerobic digestion and biogas power generation recycling device for high-concentration humic wastewater. It is easy to maintain and operate, and has a high degree of automation. It can be widely used in fields such as rural livestock wastewater treatment, and can effectively transform "wastewater treatment" into "resource creation". It is of great significance to help my country's low-carbon development. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view of the present invention.

[0018] Figure 2 This is a front elevation view of the utility model.

[0019] Figure 3 This is a schematic diagram of the right side of this utility model.

[0020] Figure 4 This is a schematic diagram of the left side of this utility model.

[0021] Figure 5 This is a cross-sectional schematic diagram of the present invention (1-1).

[0022] Figure 6 This is a schematic cross-sectional view of the present invention (2-2).

[0023] Figure 7 This is a schematic diagram of cross-section 3-3 of this utility model.

[0024] Figure 8 This is a top view of the present invention from direction A.

[0025] Figure 9 This is a partially enlarged schematic diagram of this utility model.

[0026] In the diagram: 01-Frame, 02-Dosing port, 03-Sludge pump, 04-Main sludge discharge pipe, 05-Branch sludge discharge pipe, 06-Valve, 07-Inlet, 08-Sunlight canopy, 09-Vent valve, 10-Inspection port, 11-Inspection door, 12-Biogas storage tank, 13-Water passage, 14-Overflow pipe, 15-Dosing tank, 16-Micro-aeration device, 17-Baffle plate one, 18-Sludge bin, 19-Storage tank, 20-Aeration blower, 21-Outlet, 22-High-concentration anaerobic fermentation bin, 2201-Anaerobic fermentation bin one, 2202-Anaerobic fermentation bin two, 2203-Anaerobic fermentation bin three, 2204-Anaerobic fermentation bin four 23-Overflow outlet, 2401 Partition 1, 2402-Partition 2, 2403-Partition 3, 2404-Partition 4, 2405-Partition 5, 25-Air outlet, 26-Water inlet pool, 2601-Water inlet pool 1, 2602-Water inlet pool 2, 27-Short partition, 28-Water outlet, 29-Equipment compartment, 30-First air supply pipe, 31-One-way air inlet valve, 32-Partition 2, 33-Booster fan, 34-Second air supply pipe, 35-Flame arrester, 36-Flow limiting valve, 37-Generator set, 38-Power generation compartment, 39-Positive and negative pressure protector, 40-Desulfurization tank, 41-Gas-water separator, 42-Cover plate, 43-Insulation layer. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] like Figure 1-9 As shown, this embodiment provides a high-efficiency anaerobic biogas power generation and recycling device for high-humic wastewater, which includes a wastewater treatment system, a biogas purification system and a biogas utilization system.

[0029] The wastewater treatment system includes an inlet tank 26, a high-concentration anaerobic fermentation chamber 22, a biogas storage tank 12, a chemical dosing tank 15, a sludge chamber 18, and a liquid storage tank 19. The inlet tank 26 is equipped with an inlet 07 and a short partition 27 in the middle, dividing the inlet tank 26 into inlet tank one 2601 and inlet tank two 2602. Wastewater enters inlet tank one 2601 through inlet 07 and then overflows into inlet tank two 2602 through the short partition 27, which acts as a flow stabilizer. Inlet tank two 2602 has an outlet 28 at its bottom, through which wastewater flows by gravity into anaerobic fermentation chamber one 2201.

[0030] The high-concentration anaerobic fermentation chamber 22 includes anaerobic fermentation chamber one 2201, anaerobic fermentation chamber two 2202, anaerobic fermentation chamber three 2203, and anaerobic fermentation chamber four 2204. A partition 2402 is provided between anaerobic fermentation chamber 1 (2201) and anaerobic fermentation chamber 2 (2202), a partition 3 (2403) is provided between anaerobic fermentation chamber 2 (2202) and anaerobic fermentation chamber 3 (2203), and a partition 4 (2404) is provided between anaerobic fermentation chamber 3 (2203) and anaerobic fermentation chamber 4 (2204). An overflow port 23 is provided at the upper end of partition 3 (2403). A water passage hole 13 is provided at the bottom end of partitions 2 (2402) and 4 (2404). A partition 5 (2405) is provided between anaerobic fermentation chamber 4 (2204) and the dosing tank 15. An overflow pipe 14 is provided on partition 5 (2405). When the liquid level in the chamber is higher than the overflow pipe 14, the biogas slurry of anaerobic fermentation chamber 4 (2204) enters the dosing tank 15 through the overflow pipe 14 (the sewage is degraded into biogas slurry after anaerobic fermentation). The biogas storage tank 12 is equipped with a gas outlet 25 and is fixed to the top of the high-concentration anaerobic fermentation chamber 22. A sunshade 08 is provided on the biogas storage tank 12. A micro-aeration device 16 is provided in the dosing tank 15. An appropriate amount of flocculant and coagulant are added to the dosing tank 15. After being mixed by micro-aeration, the biogas slurry enters the sludge chamber 18 from the water outlet 21. The sludge chamber 18 is connected to the storage tank 19 through a pipeline. After sedimentation, the supernatant flows by gravity through the pipeline to the storage tank 19 for storage and irrigation. The sludge chamber 18 is equipped with an external sludge pump 03. The sludge pump 03 realizes the periodic discharge of sludge from the anaerobic fermentation chambers 2201, 2202, 3203, 4204 and the sludge chamber 18 through the sludge discharge main pipe 04 and the sludge discharge branch pipe 05 with valve 06.

[0031] The biogas purification system includes an equipment compartment 29, a positive and negative pressure protector 39, a desulfurization tank 40, and a gas-water separator 41. The positive and negative pressure protector 39, the desulfurization tank 40, and the gas-water separator 41 are all located inside the equipment compartment 29, which is located below the water inlet pool 26. The equipment compartment 29 is equipped with a second partition 32, and the positive and negative pressure protector 39, the desulfurization tank 40, and the gas-water separator 41 are located above the second partition 32 of the equipment compartment 29. Wastewater undergoes anaerobic fermentation in anaerobic fermentation chambers 1-2201, 2202, 3-2203, and 4-2204, producing a large amount of biogas. The biogas is then connected to a positive and negative pressure protector 39 via a pipeline through outlet 25. The positive and negative pressure protector 39 is connected to a desulfurization tank 40, which is connected to a gas-water separator 41. The gas-water separator 41 is connected to a one-way air inlet valve 31, which is connected to a booster fan 33.

[0032] The biogas utilization system includes a booster fan 33, a flame arrester 35, a generator set 37, and a power generation compartment 38. The booster fan 33 is located below the partition 32 of the equipment compartment 29. The booster fan 33 is connected to the flame arrester 35 through a pipe. A flow-limiting valve 36 is installed after the flame arrester 35 to prevent biogas backflow. The flow-limiting valve 36 is connected to the generator set 37. The flame arrester 35, the flow-limiting valve 36, and the generator set 37 are all located in the power generation compartment 38. The generator set 37 can convert the transmitted biogas into electrical energy for power generation.

[0033] The working principle of this utility model is as follows: Sewage enters the high-concentration anaerobic fermentation chamber from the inlet pool through the outlet to carry out anaerobic fermentation and produce biogas. The biogas produced is stored in the biogas storage tank. When needed, the biogas is desulfurized and dehydrated by the desulfurization tank and gas-water separator, and then supplied to the generator set by the booster fan to generate electricity. The generated electricity is reused for the aeration fan, sludge pump and supplementing the process power in the plant area.

Claims

1. A high-efficiency anaerobic digestion and biogas power generation recycling device for high-concentration humic wastewater, characterized in that: The system includes a wastewater treatment system, a biogas purification system, and a biogas utilization system. The wastewater treatment system includes an inlet tank, a high-concentration anaerobic fermentation chamber, a biogas storage tank, a dosing tank, a sludge storage tank, and a liquid storage tank. The inlet tank has an inlet and a short partition dividing it into inlet tank one and inlet tank two. Wastewater enters inlet tank one through the inlet and overflows into inlet tank two through the short partition. Inlet tank two has an outlet at its bottom, through which wastewater flows by gravity into anaerobic fermentation chamber one. The high-concentration anaerobic fermentation chamber includes anaerobic fermentation chamber one, anaerobic fermentation chamber two, anaerobic fermentation chamber three, and anaerobic fermentation chamber four. A partition two separates anaerobic fermentation chamber one from anaerobic fermentation chamber two. A partition three is provided between the anaerobic fermentation chamber three and the anaerobic fermentation chamber four. A partition four is provided between the anaerobic fermentation chamber three and the anaerobic fermentation chamber four. An overflow port is provided at the upper end of the partition three. Water passage holes are provided at the bottom ends of both the partition two and the partition four. A partition five is provided between the anaerobic fermentation chamber four and the dosing tank. An overflow pipe is provided on the partition five. When the liquid level in the chamber is higher than the overflow pipe, the biogas slurry in the anaerobic fermentation chamber four enters the dosing tank through the overflow pipe. The biogas storage tank is provided with a gas outlet and is fixed to the top of the high-concentration anaerobic fermentation chamber. A sunshade is provided on the biogas storage tank. A micro-aeration device is provided in the dosing tank. An appropriate amount of flocculant and coagulant are added to the dosing tank. After being mixed by micro-aeration, the biogas slurry enters the sludge chamber through the water outlet hole. The sludge chamber is connected to... The sludge is connected to a storage tank via a pipeline. After sedimentation, the supernatant flows by gravity to the storage tank for storage. An external sludge pump is installed in the sludge tank. The sludge pump periodically discharges sludge from anaerobic fermentation tanks 1, 2, 3, and 4, as well as the sludge tank, through a main sludge discharge pipe and valved branch pipes. The biogas purification system includes an equipment compartment, a positive and negative pressure protector, a desulfurization tank, and a gas-liquid separator. The positive and negative pressure protector, desulfurization tank, and gas-liquid separator are all located inside the equipment compartment, which is below the inlet tank. The equipment compartment is equipped with a second partition. The positive and negative pressure protector, desulfurization tank, and gas-liquid separator are located above the second partition. Wastewater flows through anaerobic fermentation tanks 1, 2, and 4, and the anaerobic fermentation tank... Anaerobic fermentation in Chamber 3 and Chamber 4 produces a large amount of biogas. The biogas is piped through the outlet to a positive and negative pressure protector, which is connected to a desulfurization tank. The desulfurization tank is connected to a gas-liquid separator, which is connected to a one-way inlet valve. The one-way inlet valve is connected to a booster fan. The biogas utilization system includes a booster fan, a flame arrester, a generator set, and a power generation chamber. The booster fan is located below the second partition of the equipment chamber. The booster fan is connected to the flame arrester through a pipe. A flow limiting valve is installed after the flame arrester. The flow limiting valve is connected to the generator set. The flame arrester, flow limiting valve, and generator set are all located in the power generation chamber. The generator set can convert the transmitted biogas into electrical energy for power generation.

2. The high-concentration humic wastewater high-efficiency anaerobic digestion and biogas power generation recycling device according to claim 1, characterized in that: The solar roof is made of polycarbonate panels.

3. The high-efficiency anaerobic digestion and biogas power generation recycling device for high-concentration humic wastewater according to claim 1, characterized in that: The generator set produces electricity which is then used for the aeration blower and sludge pump in this device.

4. The high-concentration humic wastewater high-efficiency anaerobic digestion and biogas power generation recycling device according to claim 1, characterized in that: The working process of the high-concentration humic wastewater high-efficiency anaerobic biogas power generation and recycling device is as follows: Wastewater enters the high-concentration anaerobic fermentation chamber from the inlet pool through the outlet. After anaerobic fermentation in anaerobic fermentation chambers 1, 2, 3, and 4, the wastewater enters the dosing tank. After adding appropriate amounts of flocculant and coagulant, the physical method of micro-aeration is used to enhance the coagulation and sedimentation of suspended solids. The biogas slurry enters the sludge tank, where gravity causes the solid particles in the biogas slurry to gradually settle down. The supernatant flows by gravity to the storage tank as the liquid level rises. The sludge deposited in anaerobic fermentation chambers 1, 2, 3, and 4, as well as the sludge tank, is periodically discharged by a sludge pump. A large amount of biogas is produced during anaerobic fermentation. The biogas is stored in a biogas tank. When needed, it is desulfurized and purified by a desulfurization tank and a gas-water separator, and then supplied to the generator set for power generation by a booster fan.

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