A closed structure for wastewater storage with automatically adjustable internal environment

Abstract

This invention relates to a closed wastewater storage structure with automatically adjustable internal environment, comprising a tank, a closed structure, and a heat pump device. The closed structure covers the upper surface of the closed tank. An air supply device and a monitoring device are interconnected within the closed structure. The monitoring device includes at least several temperature monitors, humidity monitors, and hydrogen sulfide gas monitors for real-time monitoring of the internal environment of the closed structure. The air supply device includes an air supply section, a first exhaust section, and a second exhaust section, used to supply fresh air to the closed structure and exhaust waste gas based on data from the monitoring device. The heat pump device includes a throttling device, an evaporator, a compressor, and a condenser connected in sequence. The heat pump device is interconnected with the monitoring device. The evaporator is located inside the closed structure and is used to remove heat from the closed structure based on data from the monitoring device.

Description

Technical Field

[0001] This invention belongs to the field of wastewater odor treatment technology, specifically relating to a closed wastewater storage structure that can automatically adjust its internal environment. Background Technology

[0002] In the field of odor control in the wastewater treatment industry, some tanks or equipment with strong odors (such as equalization tanks, primary sedimentation tanks, air flotation equipment, hydrolysis tanks, aerobic tanks, sedimentation tanks, etc.) are usually enclosed using inverted membranes, fiberglass, PC polycarbonate panels, etc. After enclosing, the exhaust gas in the enclosed space is extracted by the fan of the back-end deodorization facility for treatment or high-altitude discharge.

[0003] Even after sealing, although the exhaust gas in the enclosed space is continuously drawn in by the deodorization fan, the internal temperature, humidity, and hydrogen sulfide content are still significantly higher than when it is not sealed. In a high-temperature and humid environment, hydrogen sulfide in the exhaust gas easily dissolves in water droplets adhering to the equipment surface, forming weakly acidic hydrosulfuric acid, which will accelerate the corrosion of normally operating equipment and severely shorten its service life. The increased hydrogen sulfide content in the enclosed space also poses a huge safety hazard to the personal safety of maintenance personnel. Summary of the Invention

[0004] To address the aforementioned problems, the present invention provides a closed sewage storage structure capable of automatically adjusting its internal environment, comprising a tank, a closed structure, and a heat pump device. The closed structure covers the upper surface of the closed tank. Inside the closed structure are an air supply device and a monitoring device that are interconnected with each other. The monitoring device includes at least several temperature monitors, humidity monitors, and hydrogen sulfide gas monitors for real-time monitoring of the environment inside the closed structure.

[0005] The air supply device includes an air supply section, a first exhaust section and a second exhaust section, which are used to supply fresh air to the enclosed structure and exhaust waste gas according to the data of the monitoring device.

[0006] The heat pump device includes a throttle valve, an evaporator, a compressor, and a condenser connected in sequence. The heat pump device is connected to a monitoring device. The evaporator is located inside a closed structure and is used to remove heat from the closed structure based on data from the monitoring device.

[0007] The heat pump device of this invention is connected to a monitoring device for communication. Using monitoring data from temperature and humidity monitors, it guides the heat pump system to achieve automatic adjustment of temperature and humidity within the enclosed structure. The air supply device and the monitoring device are connected to each other for communication. Using a hydrogen sulfide gas monitor, it guides the intake of fresh air and exhaust of waste gas through the air supply device to reduce the hydrogen sulfide content within the enclosed structure.

[0008] Optionally, several temperature monitors, several humidity monitors, and several hydrogen sulfide gas monitors are evenly distributed inside the enclosed structure, with the hydrogen sulfide gas monitors located below the temperature and humidity monitors, to uniformly monitor the temperature, humidity, and hydrogen sulfide gas content at various points within the enclosed structure.

[0009] Optionally, the air supply section is located on one side of the closed structure, the first air exhaust section is located in the middle of the top of the closed structure, and the second air exhaust section is located on the opposite side of the air supply section, and the second air exhaust section is located on the opposite side of the air supply section in both the length and width directions of the closed structure.

[0010] Optionally, the air supply unit includes an air supply duct and a first fan on the air supply duct. The air supply duct is located outside the enclosed structure, and the air outlet of the air supply duct is connected to the interior of the enclosed structure to supply fresh air from the outside to the enclosed structure.

[0011] Optionally, the first exhaust section includes a first exhaust duct and an exhaust device on the first exhaust duct. The air inlet of the first exhaust duct is located at the top of the enclosed device and is used to exhaust the waste gas collected at the top of the enclosed structure. The air outlet of the first exhaust duct is located outside the enclosed structure and can be connected to a conventional exhaust gas treatment device.

[0012] Optionally, the second exhaust section includes a second exhaust duct and a second fan on the second exhaust duct. The second exhaust duct is located outside the enclosed structure, and the air inlet of the second exhaust duct is connected to the interior of the enclosed structure, so that the exhaust gas inside the enclosed structure is discharged from the enclosed structure through the second exhaust duct and the second fan.

[0013] Optionally, the second fan includes a housing and a fan motor, several fan blades and louvers inside the housing. The several fan blades are evenly fixed around the fan motor along the circumference of the fan motor, and the fan motor drives the fan blades to rotate.

[0014] The fan motor and fan blades are provided with louvers on the downwind side. The louvers include several blades arranged vertically, and each blade has a blade shaft at its top.

[0015] Further optional, when there is no wind passing through the second fan, the blades are in a natural drooping state, and the bottom of the upper blade and the top of the lower blade naturally overlap on the leeward side, so that the upper and lower blades overlap each other end to end, preventing air from passing through the louvers.

[0016] When the second fan exhausts air outward, the wind blows the blades. The blades rotate with their top blade axis as the fulcrum, and the bottom of the blades rotates downwind, thus opening the louvers.

[0017] When the reverse wind force from the downwind side is greater than the outward air force from the second row of air ducts, the blades rotate in the upwind direction. The bottom of the blades is blocked by the top of the adjacent blades below, preventing them from continuing to rotate in the upwind direction. This causes the blades to connect vertically, and the louvers are in a closed state.

[0018] Optionally, a plastic film is laid on the inner wall of the closed structure, and a water spraying device is provided on the top of the closed structure for spraying water onto the top of the plastic film to dissolve soluble waste gas near the inner wall of the closed structure.

[0019] The bottom of the enclosed structure is equipped with a treatment tank, which contains a rotating aerobic microbial carrier. The treatment tank is arranged around the circumference of the enclosed structure (that is, the circumference of the opening at the top of the tank). The bottom of the plastic film extends into the treatment tank, so that the water containing dissolved waste gas flowing down the plastic film can flow into the treatment tank.

[0020] Further optionally, when the top of the closed structure is herringbone shaped, the top of the closed structure includes two overlapping inclined top plates and two triangular side plates, and the water spraying device includes two horizontal spray pipes and two divergent spray pipes, with one horizontal spray pipe corresponding to one inclined top plate and one divergent spray pipe corresponding to one triangular side plate.

[0021] Optionally, the treatment tank includes four straight sub-slots connected end to end to form a rectangle, and the sub-slots are connected end to end; each sub-slot contains a spiral biological carrier, which is connected to a drive motor, and the four drive motors are located on the outside of the four apex corners of the treatment tank; the water outlet of the treatment tank is an overflow outlet, and the treated water overflows from the side away from the closed structure and falls into the pool below.

[0022] Alternatively, the inner core of the biological carrier is made of a mixture of woody plant roots and stems woven together and then pressed, while the surface is uniformly woven with the roots, stems and leaves of herbaceous plants. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a closed sewage storage structure that can automatically adjust its internal environment.

[0024] Figure 2 for Figure 1 A top-down view;

[0025] Figure 3 This is a side view of the second fan.

[0026] Figure 4 This is a schematic diagram showing the states of the louvers of the second fan when there is no ventilation, the ventilation is relatively small, the ventilation is relatively large, and the wind is blocked in the opposite direction.

[0027] Figure 5This is a schematic diagram of the water spraying device;

[0028] Figure 6 This is a schematic diagram showing the connection between the water spraying device and the enclosed structure;

[0029] Figure 7 This is a schematic diagram of the water treatment tank.

[0030] In the attached diagram, 1-tank body, 2-enclosed structure, 3-temperature monitor, 4-humidity monitor, 5-hydrogen sulfide gas monitor, 6-air supply unit, 7-first exhaust unit, 8-second exhaust unit, 9-throttle device, 10-evaporator, 11-compressor, 12-condenser, 13-air supply duct, 14-first fan, 15-first exhaust duct, 16-second exhaust duct, 17-second fan, 18-fan motor, 19-fan blade, 20-louver, 21-blade, 22-blade shaft, 23-treatment tank, 24-biological carrier, 25-inclined top plate, 26-triangular side plate, 27-horizontal spray pipe, 28-divergent spray pipe, 29-branch pipe, 30-branch tank, 31-drive motor. Detailed Implementation

[0031] This embodiment provides a closed wastewater storage structure that can automatically adjust its internal environment, such as... Figures 1-7 As shown, it includes a pool body 1, a closed structure 2 and a heat pump device. The closed structure 2 covers the upper surface of the closed pool body 1. The closed structure 2 is equipped with an air supply device and a monitoring device that are interconnected with each other. The monitoring device includes at least a number of temperature monitors 3, humidity monitors 4 and hydrogen sulfide gas monitors 5, which are used to monitor the environment inside the closed structure 2 in real time.

[0032] The air supply device includes an air supply section 6, a first exhaust section 7, and a second exhaust section 8, which are used to supply fresh air to the enclosed structure 2 and exhaust waste gas according to the data of the monitoring device.

[0033] The heat pump device includes a throttle 9, several evaporators 10, a compressor 11, and a condenser 12 connected in sequence. The heat pump device is connected to a monitoring device. The evaporators 10 are located inside the closed structure 2 and are used to remove heat from the closed structure 2 according to the data from the monitoring device.

[0034] Optionally, the tank 1 can be an existing sewage treatment tank that contains sewage or has various functions, such as an equalization tank, primary sedimentation tank, flotation tank, hydrolysis tank, aerobic tank, sedimentation tank, etc.

[0035] The shape of the closed structure 2 is adapted to the shape of the pool body 1 below, as long as it can cover the opening on the upper surface of the pool body 1. That is, the closed structure 2 completely blocks the opening at the top of the pool body 1, and can collect all the heat, moisture and exhaust gas emitted from the top of the pool body 1 into the closed structure 2.

[0036] Preferably, the top of the closed structure 2 is herringbone shaped, and the tapered shape of the top helps to collect exhaust gas at the top, which is then discharged through the first exhaust section 7.

[0037] Optionally, the form of the enclosed structure 2 is selected from inverted membrane, fiberglass, and PC sun sheet.

[0038] Optionally, several temperature monitors 3, several humidity monitors 4, and several hydrogen sulfide gas monitors 5 are evenly distributed inside the enclosed structure 2, with the hydrogen sulfide gas monitors 5 positioned below the temperature monitors 3 and humidity monitors 4. This allows for the uniform monitoring of temperature, humidity, and hydrogen sulfide gas content throughout the enclosed structure 2. Since hydrogen sulfide gas readily dissolves in water droplets adhering to the equipment surface under high temperature and humidity conditions, forming weakly acidic hydrosulfuric acid that corrodes the equipment, the hydrogen sulfide gas monitors 5 are positioned low to allow for timely control of the hydrogen sulfide gas before it has largely diffused to the top of the enclosed structure 2, thus preventing equipment corrosion.

[0039] Optionally, the air supply section 6 is located on one side of the closed structure 2, the first exhaust section 7 is located in the middle of the top of the closed structure 2, and the second exhaust section 8 is located on the opposite side of the air supply section 6, and the second exhaust section 8 is located on the opposite side of the air supply section 6 in both the length direction and the width direction of the closed structure 2.

[0040] Optionally, the air supply unit 6 includes an air supply pipe 13 and a first fan 14 on the air supply pipe 13. The air supply pipe 13 is located outside the closed structure 2, and the air outlet of the air supply pipe 13 is connected to the interior of the closed structure 2 to supply fresh air from the outside to the closed structure 2.

[0041] Optionally, the first exhaust section 7 includes a first exhaust duct 15 and an extraction device on the first exhaust duct 15. The air inlet of the first exhaust duct 15 is located at the top of the enclosed device, used to exhaust the waste gas collected at the top of the enclosed structure 2. The air outlet of the first exhaust duct 15 is located outside the enclosed structure 2, and the air outlet can be connected to a conventional exhaust gas treatment device. The extraction device can be a commercially available air extractor or exhaust fan.

[0042] Optionally, the second exhaust section 8 includes a second exhaust duct 16 and a second fan 17 on the second exhaust duct 16. The second exhaust duct 16 is located outside the closed structure 2, and the air inlet of the second exhaust duct 16 is connected to the interior of the closed structure 2, so that the exhaust gas in the closed structure 2 is discharged from the closed structure 2 through the second exhaust duct 16 and the second fan 17.

[0043] Optionally, the enclosed structure 2 is further configured from top to bottom as follows: the air inlet of the first exhaust duct 15, the evaporator 10, the air inlet of the second exhaust duct 16, the hydrogen sulfide gas detector 5, and the air outlet of the supply duct 13, with the air outlet of the supply duct 13 located at the bottom of the enclosed structure 2. This arrangement allows fresh air to enter from the bottom of the enclosed structure 2, pushing the existing waste gas inside the enclosed structure 2 downwards into the water body in the pool 1, or upwards into the middle and upper parts of the enclosed structure 2. The hydrogen sulfide gas detector 5 then detects this gas, determining whether the hydrogen sulfide content in the waste gas is too high and whether it is necessary to activate the first exhaust duct 7 and / or the second exhaust duct 8. The second exhaust duct 8 can promptly discharge the rising waste gas from the enclosed structure 2. Any remaining waste gas continues to rise to the top of the enclosed structure 2 and collects before being discharged by the first exhaust duct 7.

[0044] Optionally, the second fan 17 includes a housing and a fan motor 18, a plurality of fan blades 19 and louvers 20 inside the housing. The plurality of fan blades 19 are evenly fixed around the fan motor 18 along the circumference of the fan motor 18, and the fan motor 18 drives the fan blades 19 to rotate.

[0045] The fan motor 18 and the fan blades 19 are provided with louvers 20 on the downwind side. The louvers 20 include a number of blades 21 arranged vertically, and each blade 21 is provided with a blade shaft 22 at its top.

[0046] Further optional, when there is no wind passing through the second fan 17, the blades 21 are in a natural drooping state, and the bottom of the upper blade 21 and the top of the lower blade 21 naturally overlap on the downwind side, so that the upper and lower blades 21 overlap each other end to end, preventing air from passing through the louvers 20.

[0047] When the second fan 17 exhausts air outward, the wind blows the blades 21. The blades 21 rotate with the blade shaft 22 at their top as the fulcrum, and the bottom of the blades 21 rotates downwind, thus opening the louvers. The stronger the wind, the greater the amplitude of the downwind rotation of the blades 21, and the greater the amplitude of the opening of the blades 21.

[0048] When the downwind side reverse wind force is greater than the outward exhaust wind force of the second exhaust duct 16, the blade 21 rotates in the upwind direction. The bottom of the blade 21 is blocked by the top of the adjacent blade 21 below, and cannot continue to rotate in the upwind direction. This makes the blade 21 connected vertically, and the louver 20 is in a closed state to prevent the downwind side reverse wind force from entering the second fan 17 and the enclosed structure 2.

[0049] The structure of the first fan 14 is the same as that of the second fan 17. The upwind direction of the first fan 14 is the inlet direction of the air supply pipe 13, and the downwind direction is the outlet direction of the air supply pipe 13. That is, the louvers 20 of the first fan 14 can prevent the exhaust gas in the closed structure 2 from being discharged through the first fan 14 along the air supply pipe 13.

[0050] Optionally, the heat pump device contains refrigerant, which flows through: throttle valve 9, evaporator 10, compressor 11, condenser 12, and throttle valve. The outlet of the throttle valve is connected in parallel to the inlets of several evaporators 10, and the outlets of several evaporators 10 are connected in parallel to the inlet of compressor 11. The several evaporators 10 are evenly distributed within the enclosed structure 2. During the upward flow of the hot, humid waste gas within the enclosed structure 2, it passes through the evaporators 10 and exchanges heat with the refrigerant within them. The refrigerant evaporates and absorbs heat, cooling the waste gas within the enclosed structure 2, causing the internal temperature of the enclosed structure 2 to drop. The cold air condenses into water droplets and falls back into the pool 1. The refrigerant is then fed into compressor 11, whose outlet is connected to the inlet of condenser 12. The outlet of condenser 12 is connected to the inlet of the throttle valve. Compressor 11 heats and pressurizes the refrigerant, which then enters condenser 12 to exchange heat with cold water. The refrigerant then flows back to the throttle valve for the next cycle. The cold water after heat exchange becomes hot water, which can then be fed into the device requiring heat.

[0051] Optionally, the enclosed wastewater storage structure further includes a controller, which is communicatively connected to and controls the heat pump unit, the air supply unit, and the monitoring unit.

[0052] When the temperature monitor 3 and humidity monitor 4 detect an increase in temperature and humidity inside the enclosed structure 2, the controller starts the heat pump device to displace the heat and moisture inside the enclosed structure 2 to the outside.

[0053] The controller sets two concentration limits for hydrogen sulfide content within the enclosed structure 2: a threshold limit and a safety critical value. The threshold limit is 15 mg / m³. 3 Almost all staff members will not experience adverse effects from long-term exposure; the safety threshold is 30 mg / m³. 3 Staff exposed for less than 8 hours will not experience any adverse effects;

[0054] When the hydrogen sulfide gas detector 5 detects that the hydrogen sulfide content in the enclosed structure 2 exceeds the safety threshold, the controller opens the air supply section 6, the first exhaust section 7, and the second exhaust section 8 to promptly discharge the exhaust gas and ensure the safety of personnel entering the enclosed structure 2 for maintenance. When the hydrogen sulfide gas detector 5 detects that the hydrogen sulfide content in the enclosed structure 2 is between the threshold value and the safety threshold, the controller only opens the air supply section 6 and the first exhaust section 7 to exhaust the gas. When the hydrogen sulfide gas detector 5 detects that the hydrogen sulfide content in the enclosed structure 2 is below the threshold value, the controller only opens the first exhaust section 7 for normal exhaust.

[0055] When both the supply air section 6 and the second exhaust air section 8 are closed, the first exhaust air section 7 continues to exhaust air normally. At this time, the pressure inside the closed structure 2 will decrease, and the pressure difference with the outside will increase. Under the power of the pressure difference, the louvers 20 of the first fan 14 in the supply air section 6 open in the downwind direction, and fresh air from the outside enters the closed structure 2 through the first fan 14, balancing the pressure difference between the inside and outside. However, the louvers 20 of the second fan 17 cannot open under the action of the pressure difference.

[0056] Optionally, a plastic film is laid on the inner wall of the closed structure 2, and a water spraying device is provided on the top of the closed structure 2 for spraying water onto the top of the plastic film to dissolve soluble waste gas near the inner wall of the closed structure 2.

[0057] The bottom of the closed structure 2 is provided with a treatment water tank 23, and the treatment water tank 23 is provided with a rotating aerobic microbial carrier 24. The treatment water tank 23 is arranged around the circumference of the closed structure 2 (that is, the circumference of the top opening of the pool body 1). The bottom of the plastic film extends into the treatment water tank 23, so that the water flowed down the plastic film with dissolved waste gas can flow into the treatment water tank 23.

[0058] Further optionally, when the top of the closed structure 2 is in the shape of a herringbone, the top of the closed structure 2 includes two overlapping inclined top plates 25 and two triangular side plates 26. The water spraying device includes two horizontal spray pipes 27 and two divergent spray pipes 28. One horizontal spray pipe 27 is set for one inclined top plate 25, and one divergent spray pipe 28 is set for one triangular side plate 26.

[0059] Further optionally, the horizontal spray pipe 27 is horizontally arranged along the top edge of the inclined top plate 25, and the nozzle direction of the horizontal spray pipe 27 is perpendicular to the lower surface of the corresponding inclined top plate 25, that is, the horizontal spray pipe 27 sprays water towards the inner wall of the inclined top plate 25 so that the water can flow down along the inclined top plate 25; a plurality of nozzles of the horizontal spray pipe 27 are evenly arranged along the horizontal spray pipe 27.

[0060] Optionally, the diverging spray pipe 28 includes several inclined branch pipes 29, the top ends of the several branch pipes 29 overlap and are connected to one end of a horizontal spray pipe 27 to input water into the branch pipes 29; the bottom ends of the several branch pipes 29 have different orientations and are divergent, the several branch pipes 29 are evenly arranged on the top of the triangular side plate 26, and several nozzles of the branch pipes 29 are perpendicular to the inner wall of the triangular side plate 26 and spray water toward the inner wall of the triangular side plate 26.

[0061] To prevent acidic gases such as hydrogen sulfide in the exhaust gas from dissolving in water droplets at the top of the enclosed structure 2 and corroding the equipment, this invention lays a layer of plastic film on the inner wall of the enclosed structure 2 to block the exhaust gas. The plastic film is inexpensive and easy to replace. To capture the exhaust gas, a water spraying device is installed at the top of the enclosed structure 2. This device, designed for the herringbone-shaped enclosed structure 2, has two horizontal spray pipes 27 and two divergent spray pipes 28, which spray water evenly onto the inclined top plate 25 and triangular side plate 26, respectively. The sprayed water flows evenly down the plastic film on the inclined top plate 25 and triangular side plate 26. When the exhaust gas rises and encounters the water on the plastic film, it dissolves hydrogen sulfide and other gases, turning them into a weakly acidic liquid that flows into the treatment water tank 23, reducing the load on the exhaust gas. The water spray on the plastic film also cools the interior of the enclosed device.

[0062] The connection between the horizontal spray pipe 27 and the divergent spray pipe 28 can be such that one end of one horizontal spray pipe 27 is connected in parallel to the top inlet of a branch pipe 29 of a divergent spray pipe 28, and the other end of another horizontal spray pipe 27 is connected in parallel to the top inlet of a branch pipe 29 of another divergent spray pipe 28.

[0063] Optionally, the treatment tank 23 includes four straight sub-slots 30, which are connected end to end to form a rectangle and are interconnected. Each sub-slot 30 contains a spiral biological carrier 24, which is connected to a drive motor 31. The four drive motors 31 are located on the outside of the four apex corners of the treatment tank 23. The water outlet of the treatment tank 23 is an overflow outlet, and the treated water overflows from the side away from the closed structure 2 and falls into the pool 1 below.

[0064] Optionally, the inner core of the biological carrier 24 is made of woody plant roots and stems woven and pressed together, and the surface is uniformly woven with herbaceous plant roots, stems and leaves. It has a large specific surface area, strong toughness and good strength, and can carry a large number of aerobic microorganisms without easily loosening or deforming.

[0065] Alternatively, the biological carrier 24 has a supporting shaft at its center, and the plant carrier forms a spiral around the supporting shaft. One end of the supporting shaft is connected to the shaft of the drive motor.

[0066] The treatment tank 23 of this invention is installed above the pool body 1, and is suspended in the air. Therefore, it should not be too large, and it only treats a small amount of water flowing down from the inner wall of the plastic film, resulting in a small water treatment capacity. Therefore, traditional aerobic reaction devices are not suitable. This invention uses a tank as the container for aerobic treatment, with a spiral biological carrier 24 inside. This carrier rotates under the action of a drive motor 31, simultaneously functioning as both the biological carrier 24 and the agitator. Hydrogen sulfide dissolves in water to form sulfides. The biological carrier 24, loaded with colorless sulfur bacteria and other microbial communities, oxidizes the sulfides in the wastewater to elemental sulfur under aerobic conditions. When the spiral biological carrier 24 rotates, it can drive the water to flow in a single direction. The four sub-tanks 30 are connected end to end, and the drive motors 31 corresponding to the four sub-tanks 30 are set in a clockwise or counterclockwise direction. The four biological carriers 24 rotate in the same direction. When the water is driven, it can circulate in the four sub-tanks 30 (clockwise or counterclockwise). After the treatment is completed, the overflow water is discharged. The sulfur element generated by the biochemical reaction remains at the bottom of the sub-tank 30 and also circulates with the water. It will not settle in one place. After a large amount of sulfur element accumulates, it will be cleaned up.

[0067] Optionally, the air outlet of the air supply duct 13 is connected to a branch line that leads into the treatment water tank 23. When the air supply duct 13 is ventilated, it replenishes oxygen to the treatment water tank 23.

[0068] Optionally, the water spraying device is connected to a water inlet pipe, one end of which is connected to a water source, and the other end is connected in parallel to the middle of two horizontal spray pipes 27 to supply water to the water spraying device; the water source can be the pool 1, a reclaimed water pool, or tap water, or it can be slightly polluted water with a little COD to provide a carbon source for aerobic microorganisms.

Claims

1. A closed wastewater storage structure with automatically adjustable internal environment, characterized in that, It includes a pool body, a closed structure, and a heat pump device. The closed structure covers the upper surface of the closed pool body. Inside the closed structure, there are air supply devices and monitoring devices that are interconnected. The monitoring devices include at least several temperature monitors, humidity monitors, and hydrogen sulfide gas monitors for real-time monitoring of the environment inside the closed structure. The air supply device includes an air supply section, a first exhaust section and a second exhaust section, which are used to supply fresh air to the enclosed structure and exhaust waste gas according to the data of the monitoring device. The heat pump device includes a throttle, an evaporator, a compressor, and a condenser connected in sequence. The heat pump device is connected to a monitoring device. The evaporator is located inside a closed structure and is used to remove heat from the closed structure based on data from the monitoring device. A plastic film is laid on the inner wall of the closed structure, and a water spraying device is provided on the top of the closed structure to spray water onto the top of the plastic film to dissolve soluble waste gas near the inner wall of the closed structure. The bottom of the closed structure is equipped with a treatment tank, which contains a rotating aerobic microbial carrier. The treatment tank is arranged around the circumference of the closed structure, and the bottom of the plastic film extends into the treatment tank, so that the water containing dissolved waste gas flowing down the plastic film can flow into the treatment tank. The treatment tank includes four straight sub-slots, which are connected end to end to form a rectangle. Each sub-slot contains a spiral biological carrier connected to a drive motor. The four drive motors are located on the outside of the four apex corners of the treatment tank. The water effluent from the treatment tank is an overflow effluent. The treated water overflows from the side away from the closed structure and falls into the pool below. The inner core of the biological carrier is made of woody plant roots and stems woven together and then pressed, while the surface is uniformly woven with herbaceous plant roots, stems and leaves.

2. The wastewater storage closed structure according to claim 1, characterized in that, Several temperature monitors, several humidity monitors, and several hydrogen sulfide gas monitors are evenly distributed inside the enclosed structure, with the hydrogen sulfide gas monitors located below the temperature and humidity monitors, to uniformly monitor the temperature, humidity, and hydrogen sulfide gas content at various points within the enclosed structure.

3. The closed structure for wastewater storage according to claim 1, characterized in that, The air supply section is located on one side of the closed structure, the first exhaust section is located in the middle of the top of the closed structure, and the second exhaust section is located on the opposite side of the air supply section. The second exhaust section is located on the opposite side of the air supply section in both the length and width directions of the closed structure.

4. The closed wastewater storage structure according to claim 3, characterized in that, The air supply unit includes an air supply duct and a first fan on the air supply duct. The air supply duct is located outside the closed structure, and the air outlet of the air supply duct is connected to the inside of the closed structure to supply fresh air from the outside to the closed structure. The first exhaust section includes a first exhaust duct and an exhaust device on the first exhaust duct. The air inlet of the first exhaust duct is located at the top of the closed device and is used to exhaust the waste gas collected at the top of the closed structure. The air outlet of the first exhaust duct is located outside the closed structure. The second exhaust section includes a second exhaust duct and a second fan on the second exhaust duct. The second exhaust duct is located outside the enclosed structure, and the air inlet of the second exhaust duct is connected to the interior of the enclosed structure.

5. The wastewater storage closed structure according to claim 4, characterized in that, The second fan includes a housing and a fan motor, several fan blades and louvers inside the housing. The several fan blades are evenly fixed around the fan motor along the circumference of the fan motor, and the fan motor drives the fan blades to rotate. The fan motor and fan blades are provided with louvers on the downwind side. The louvers include several blades arranged vertically, and each blade has a blade pivot at its top.

6. The wastewater storage closed structure according to claim 5, characterized in that, When there is no wind passing through the second fan, the blades are in a natural drooping state. Among the adjacent blades, the bottom of the upper blade and the top of the lower blade naturally overlap on the leeward side, so that the upper and lower blades overlap each other end to end, preventing air from passing through the louvers. When the second fan exhausts air outward, the wind blows the blades. The blades rotate with their top blade axis as the fulcrum, and the bottom of the blades rotates downwind, thus opening the louvers. When the reverse wind force from the downwind side is greater than the outward air force from the second row of air ducts, the blades rotate in the upwind direction. The bottom of the blades is blocked by the top of the adjacent blades below, preventing them from continuing to rotate in the upwind direction. This causes the blades to connect vertically, and the louvers are in a closed state.

7. The wastewater storage closed structure according to claim 1, characterized in that, When the top of the closed structure is in the shape of a herringbone, the top of the closed structure includes two overlapping inclined top plates and two triangular side plates. The water spraying device includes two horizontal spray pipes and two divergent spray pipes. One horizontal spray pipe is set for one inclined top plate, and one divergent spray pipe is set for one triangular side plate.

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