Fresh air treatment system suitable for underground sewage treatment environment

Abstract

The fresh air treatment system suitable for the underground sewage treatment environment comprises a tube well, the top of the tube well is provided with an air inlet unit matched with a front end cooling assembly, and the bottom of the tube well is provided with a front end humidity adjusting assembly; a tail end cooling assembly is arranged in cooperation with the front end humidity adjusting assembly, an air supply unit is arranged in cooperation with the tail end cooling assembly, and output pretreatment is conducted on supplied air through the tail end humidity adjusting assembly and the gas treatment assembly; temperature and humidity data inside and outside the system are obtained through a plurality of sensing units, and a controller is arranged in a matched mode. Solar energy and natural water evaporation can be fully utilized to absorb heat and existing resources of a sewage treatment plant, air with appropriate temperature and humidity is provided for a working space of an underground sewage treatment environment, gradient utilization of energy can be achieved, and the system is environmentally friendly, energy-saving, low-carbon, high in operability, wide in applicable seasonal climate range and suitable for large-scale popularization and application. And good economic effects and energy-saving benefits are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of air conditioning, air dehumidification, ventilation, and underground working environment improvement and energy utilization and recovery, specifically relating to a fresh air treatment system suitable for underground sewage treatment environments. Background Technology

[0002] Underground wastewater treatment environments, such as underground wastewater treatment plants, refer to urban wastewater treatment facilities where the water treatment structures are located below ground level, the equipment operating level is enclosed, and the surface level is comprehensively utilized. Due to advantages such as small footprint and minimal environmental impact, underground wastewater treatment plants have gradually emerged. However, they also face challenges, as the treatment workshops and facilities are mostly located in enclosed underground spaces, largely isolated from the outside atmosphere, and the decomposition of organic matter during wastewater treatment generates malodorous gases. Although deodorization systems can collect and treat the generated malodorous gases in a sealed manner, leaks during the treatment process or in parts of the deodorization system can still increase the odor concentration in the underground space. Furthermore, the continuous heat generated by the treatment facilities and equipment during operation severely impacts the quality and comfort of the underground space.

[0003] Ventilation systems are crucial for improving the environment of underground wastewater treatment plants, responsible for regulating temperature, humidity, airflow, and air quality within the large underground space. To ensure ambient air quality in the operation and maintenance area, protect the health and safety of staff, and ensure the normal operation of equipment, underground wastewater treatment environments primarily rely on optimizing airflow organization through the placement of appropriate vents to reduce odor concentration. However, both air temperature and humidity influence the generation and dissipation of odorous gases. Studies show that organic matter in wastewater volatilizes with increasing temperature, while excessive humidity can cause oxidation and corrosion of circuit boards and components in equipment, shortening their lifespan. Therefore, in addition to providing comprehensive ventilation, the ventilation system of an underground wastewater treatment plant must also meet the requirements for cooling and dehumidifying the underground space.

[0004] Currently, underground wastewater treatment environments primarily rely on ventilation systems to directly exhaust / introduce fresh outdoor air to regulate the temperature and humidity of the underground space. However, in actual operation, to ensure the safety of the underground working environment, ventilation systems with large air volume, high frequency, and long operating times are often installed. This results in very high operating costs and a heavy dependence on the temperature and humidity of fresh outdoor air. During periods of extremely high temperatures in summer and the rainy season, it is difficult to improve the temperature or humidity of the underground space solely through ventilation. Furthermore, for special areas such as monitoring rooms and instrument equipment rooms, underground wastewater treatment environments also require air conditioning for cooling and dehumidification. While this method is reliable and convenient, it requires even higher energy consumption, significantly increasing operating costs.

[0005] Therefore, research on ventilation systems that provide cooling, dehumidification, deodorization, and energy saving in underground sewage treatment plants is worthy of in-depth study. Utility Model Content

[0006] The purpose of this invention is to overcome the above-mentioned defects in the existing technology and provide a fresh air treatment system suitable for underground sewage treatment environments.

[0007] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: a fresh air treatment system suitable for underground sewage treatment environments, comprising a manhole, the system comprising:

[0008] An air inlet unit is located at the top of the manhole and is equipped with a front-end cooling component for cooling the supplied air.

[0009] A front-end humidity control component is located at the bottom of the manhole and is used to regulate the humidity of the air entering the manhole.

[0010] An end-of-line cooling component, in conjunction with a front-end humidity control component, is used to control the temperature of the exhaust gas.

[0011] An air supply unit, in conjunction with a terminal cooling component, is equipped with a terminal humidity control component and a gas handling component for pre-output processing of the supplied air.

[0012] Several sensing units are used to acquire temperature and humidity data inside and outside the system;

[0013] A controller is provided to work in conjunction with the front-end humidity control component, regeneration unit, terminal cooling component, and sensing unit.

[0014] Preferably, the air inlet unit includes an air inlet located at the top of the manhole, a cooling water curtain is provided in conjunction with the air inlet, and a centrifugal fan is provided in conjunction with the air outlet of the manhole.

[0015] Preferably, the front-end humidity control component is a rotary dehumidifier, and a solar collector is provided in the regeneration zone of the rotary dehumidifier, the solar collector being located at the top of the manhole; the regeneration zone of the rotary dehumidifier is provided with an exhaust pipe through an on / off valve.

[0016] Preferably, a storage battery is provided in conjunction with the solar collector.

[0017] Preferably, the terminal cooling assembly includes a surface cooler located at the output end of the rotary dehumidifier.

[0018] Preferably, the heat exchange tubes of the surface cooler are configured in conjunction with the regeneration zone of the rotary dehumidifier.

[0019] Preferably, the air supply unit includes an air supply duct, and a silencer and a photoplasma treatment device are provided in conjunction with the air supply duct.

[0020] Preferably, the end of the air supply duct is provided with one or more air supply louvers, and the slot of the air supply louvers is provided with an end humidity adjustment component and a gas handling component.

[0021] Preferably, the terminal humidity control component includes a layer of carbonized sludge particles.

[0022] Preferably, the gas treatment assembly includes a filter layer.

[0023] This utility model relates to a fresh air treatment system suitable for underground sewage treatment environments, including a manhole. The top of the manhole is equipped with an air inlet unit that works in conjunction with a front-end cooling component to cool the supplied air. The bottom of the manhole is equipped with a front-end humidity control component to regulate the humidity of the air entering the manhole. A terminal cooling component is installed in conjunction with the front-end humidity control component to control the temperature of the exhaust gas. An air supply unit is also installed in conjunction with the terminal cooling component. The air supply is pre-treated before output by the terminal humidity control component and the gas treatment component. Several sensing units acquire temperature and humidity data inside and outside the system, and a controller is also included.

[0024] The beneficial effects of this utility model are that it can make full use of solar energy, natural water evaporation to absorb heat and the existing resources of sewage treatment plants to provide the working space of underground sewage treatment environment with suitable temperature and humidity air. It can realize the cascade utilization of energy, is environmentally friendly, energy-saving and low-carbon, highly operable, and applicable to a wide range of seasonal climates, with good economic effects and energy-saving benefits. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the air inlet unit and the front-end humidity regulating component of this utility model.

[0027] Figure 3 This is a schematic diagram of the air supply unit of this utility model;

[0028] Figure 4 This is an assembly diagram of the air supply louver slot, the terminal humidity adjustment component, and the gas handling component in this utility model.

[0029] The arrows in the diagram indicate the direction of airflow. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments, but the scope of protection of the present invention is not limited thereto.

[0031] This utility model relates to a fresh air treatment system suitable for underground sewage treatment environments, including a manhole 1, the system comprising:

[0032] An air inlet unit is located at the top of the manhole 1 and is equipped with a front-end cooling component for cooling the supplied air.

[0033] A front-end humidity control component is located at the bottom of the manhole 1 and is used to control the humidity of the air entering the manhole 1.

[0034] An end-of-line cooling component, in conjunction with a front-end humidity control component, is used to control the temperature of the exhaust gas.

[0035] An air supply unit, in conjunction with a terminal cooling component, is equipped with a terminal humidity control component and a gas handling component for pre-output processing of the supplied air.

[0036] Several sensing units are used to acquire temperature and humidity data inside and outside the system;

[0037] A controller is provided to work in conjunction with the front-end humidity control component, regeneration unit, terminal cooling component, and sensing unit.

[0038] In this invention, air, especially high-temperature air, first enters through the air intake unit and is cooled at the front end by a cooling component. Then, the air humidity is determined; if the humidity is too high, the front-end humidity control component is activated to dehydrate the air. The dried air is then transported to the working area of ​​the underground wastewater treatment environment through the terminal cooling component and the air supply unit. During this process, data is sensed by a sensing unit, and the controller receives the sensing signals and feeds them back to each component and working unit to trigger the start / stop operation. The controller configuration here is easily understood by those skilled in the art, and they can configure it according to their needs.

[0039] The following section provides a detailed implementation description of each component and working unit.

[0040] The air inlet unit includes an air inlet 2 located at the top of the manhole 1, a cooling water curtain 3 provided in conjunction with the air inlet 2, and a centrifugal fan 4 provided in conjunction with the air outlet of the manhole 1.

[0041] In this utility model, a cooling water curtain 3 is installed at the air inlet 2 at the top of the manhole 1. It is a special paper honeycomb structure material. Its working principle is that when the rapidly flowing air passes through the water curtain, the water film on the surface of the water curtain absorbs heat and evaporates to reduce the air temperature. Combined with the centrifugal fan 4 installed at the air outlet of the manhole 1, it provides power and continuously delivers the cooled air to the underground space based on negative pressure.

[0042] The front-end humidity control component is a rotary dehumidifier 5. A solar collector 6 is provided in the regeneration zone of the rotary dehumidifier 5. The solar collector 6 is located at the top of the manhole 1. The regeneration zone of the rotary dehumidifier 5 is provided with an exhaust pipe 8 through an on / off valve 7.

[0043] A storage battery is provided in conjunction with the solar collector 6.

[0044] The terminal cooling assembly includes a surface cooler (not shown in the figure) located at the output end of the rotary dehumidifier 5.

[0045] The heat exchange tubes of the surface cooler are configured in conjunction with the regeneration zone of the rotary dehumidifier 5.

[0046] In this invention, the front-end humidity control component is a rotary dehumidifier 5. When the air humidity is too high, the air cooled at the front end is dehydrated through the moisture absorption zone of the rotary dehumidifier 5. The dried air is then transported to the working area of ​​the underground sewage treatment environment through the terminal cooling component and the air supply unit. The moisture absorption zone moves to the regeneration zone through the rotary wheel. At this time, the solar collector 6 provides hot air to the rotary dehumidifier 5. The hot air passes through the regeneration zone of the rotary dehumidifier 5 to heat, regenerate, and desorb the adsorbent. The on / off valve 7 is opened, and the humid hot air is discharged to the outside through the exhaust pipe 8. Obviously, an exhaust fan 9 is provided in conjunction with the exhaust pipe 8.

[0047] In this invention, the solar collector 6 is set on a horizontal ground to fully absorb solar energy and convert it into heat, which is used to heat, dehydrate, and regenerate the adsorbent in the rotary dehumidifier 5. At the same time, the solar collector 6 is equipped with a battery. When the solar energy is not needed to heat and regenerate the adsorbent, the solar energy is converted into electrical energy and stored for use when needed later.

[0048] In this invention, the rotary dehumidifier 5 is equipped with a surface cooler. When the temperature of the air dried by the rotary dehumidifier 5 is still relatively high, the surface cooler is activated. The refrigerant inside absorbs the heat of the dried air, reduces the air supply temperature, and improves the ultra-high temperature working environment. The refrigerant transfers the absorbed heat to the regeneration zone of the rotary dehumidifier 5, providing an additional heat source for the regeneration of the adsorbent.

[0049] The air supply unit includes an air supply duct 10, and a silencer 11 and a photoplasma treatment device 12 are provided in conjunction with the air supply duct 10.

[0050] In this invention, the gas after temperature and humidity treatment is delivered through the air supply duct 10. At the same time, a silencer 11 and a photoplasma treatment device 12 are installed in the air supply duct 10 for noise reduction and sterilization, respectively. In practical applications, the photoplasma treatment device 12 is generally a photoplasma generator.

[0051] The air supply duct 10 is provided with one or more air supply louvers 13 at its end, and the slot 14 of the air supply louvers 13 is provided with an end humidity adjustment component and a gas handling component.

[0052] The terminal humidity control component includes a sludge carbonization particle layer 15.

[0053] The gas processing assembly includes a filter layer 16.

[0054] In this utility model, an air supply louver 13 with a slot 14 is embedded at the end of the air supply pipe 10 to adjust the air volume.

[0055] The sludge carbonization granule layer 15 is installed inside the slot 14 of the air supply louver 13. Specifically, it is a sludge carbonization granule dehumidification box. The air is further dehumidified after passing through the sludge carbonization granule layer 15. The sludge carbonization granules produced after sewage treatment are similar in properties to activated carbon, so they also have a certain adsorption capacity. The water-saturated sludge carbonization granules can be re-entered into the sludge carbonization machine to achieve dehydration and regeneration.

[0056] A filter layer 16, such as a filter sponge, is also installed at the air outlet of the air supply louver 13. It is generally placed between the sludge carbonization particle layer 15 and the air outlet of the air supply louver 13, and delivers clean, dry, and low-temperature air to the underground area through the filter sponge.

[0057] A specific workflow of this utility model includes the following steps:

[0058] 1) When the outdoor air temperature T is greater than 30℃, the cooling water curtain 3 is activated. The rapidly flowing air passes through the cooling water curtain 3. After absorbing the heat in the air, the cooling water curtain 3 evaporates and carries away a large amount of heat, thereby reducing the temperature of the air passing through the cooling curtain and achieving the purpose of cooling.

[0059] 2) When the outdoor relative humidity (%RH) is greater than 75%, the controller activates the rotary dehumidifier 5. Air passing through the cooling water curtain 3 passes through the moisture absorption zone inside the rotary dehumidifier 5, where the moisture is removed. The air is then transported to the underground space by the centrifugal fan 4. The moisture-absorbing zone moves to the regeneration zone via the rotor, where the solar collector 6 provides hot air. The hot air carries away the moisture through the regeneration zone, thus regenerating the adsorbent inside the rotary dehumidifier 5. The on / off valve 7 opens, and the regenerated air is discharged outdoors through the exhaust pipe 8.

[0060] 3) When the air temperature T after drying is still greater than 30℃, start the surface cooler at the end of the rotary dehumidifier 5. The refrigerant in the surface cooler absorbs the heat in the dry air to provide suitable cool air for the underground working space. At the same time, the heat absorbed by the refrigerant is transferred to the regeneration zone of the rotary dehumidifier 5 to help provide heat for the regeneration and desorption of the adsorbent.

[0061] 4) The clean air that has been cooled and dehumidified is discharged after being processed by the terminal humidity adjustment component and the gas treatment component through the end of the air supply duct 10. The gas treatment component includes a sludge carbonization particle layer 15. The water-saturated sludge carbonization particles re-enter the sludge carbonization machine to achieve dehydration and regeneration.

[0062] This embodiment is merely an illustration of the present utility model and is not intended to limit the present utility model. For those skilled in the art, any related improvements should also be considered within the scope of protection of the present utility model.

Claims

1. A make-up air treatment system suitable for use in an underground sewage treatment environment, comprising a tube well, characterized in that: The system comprises: An air inlet unit is arranged at the top of the tube well and cooperates with a front end cooling assembly for cooling the air supply; A front end humidity adjusting assembly is arranged at the bottom of the tube well for adjusting the humidity of the air entering the tube well; A tail end cooling assembly is arranged cooperatively with the front end humidity adjusting assembly for controlling the temperature of the air to be discharged; An air supply unit is arranged cooperatively with the tail end cooling assembly and is provided with a tail end humidity adjusting assembly and a gas treatment assembly for processing the air supply before output; A plurality of sensing units are arranged for obtaining the temperature and humidity data inside and outside the system; The front end humidity adjusting assembly, the regeneration unit, the tail end cooling assembly and the sensing units are provided with a controller.

2. A fresh air handling system suitable for use in an underground sewage treatment environment according to claim 1, characterised in that: The air inlet unit comprises an air inlet arranged at the top of the tube well, a cooling water curtain arranged cooperatively with the air inlet, and a centrifugal fan arranged cooperatively with the air outlet of the tube well.

3. A fresh air handling system suitable for use in an underground sewage treatment environment according to claim 1, wherein: The front end humidity adjusting assembly is a rotary dehumidifier, a solar heat collector is arranged cooperatively with the regeneration area of the rotary dehumidifier, and the solar heat collector is arranged at the top of the tube well; the regeneration area of the rotary dehumidifier is provided with an exhaust pipe through an on-off valve.

4. A fresh air handling system suitable for use in an underground sewage treatment environment according to claim 3, wherein: A storage battery is arranged cooperatively with the solar heat collector.

5. A fresh air handling system suitable for use in an underground sewage treatment environment according to claim 4, wherein: The tail end cooling assembly comprises a surface cooler arranged at the output end of the rotary dehumidifier.

6. A fresh air handling system suitable for use in an underground sewage treatment environment according to claim 5, wherein: The heat exchange pipe of the surface cooler is arranged cooperatively with the regeneration area of the rotary dehumidifier.

7. A fresh air handling system suitable for use in an underground sewage treatment environment according to claim 1, wherein: The air supply unit comprises an air supply pipe, a sound absorber and a light plasma treatment device arranged cooperatively with the air supply pipe.

8. A fresh air handling system suitable for use in an underground sewage treatment environment according to claim 7, wherein: The tail end of the air supply pipe is provided with one or more air supply louvers, and the tail end humidity adjusting assembly and the gas treatment assembly are arranged cooperatively with the insertion slots of the air supply louvers.

9. A fresh air handling system suitable for use in an underground sewage treatment environment according to claim 8, wherein: The tail end humidity adjusting assembly comprises a sludge carbonized particle layer.

10. A fresh air handling system suitable for use in an underground sewage treatment environment according to claim 8, wherein: The gas treatment assembly comprises a filter layer.

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