Ozone contact tank

Abstract

The utility model belongs to the technical field of sewage treatment, and provides an ozone contact tank which comprises a tank body arranged under the ground and internally provided with an ozone digestion area; an inlet of the tail gas destructor is communicated with the ozone digestion area, and an outlet of the tail gas destructor is communicated above the ground through an exhaust pipe; the isolation gas-collecting hood covers the outer side of the tail gas destructor, and a one-way gas inlet valve is arranged on the side wall of the isolation gas-collecting hood; an inlet of the exhaust fan is communicated with the isolation gas collecting hood, and an outlet of the exhaust fan extends to the position above the ground. According to the ozone contact tank, the isolation gas collecting hood, the exhaust fan and the one-way gas inlet valve are arranged, and a micro-negative pressure state is formed on the inner side of the isolation gas collecting hood, so that the possibility of ozone overflow is effectively avoided, and conditions are created for the ozone contact tank to enter the ground. The problem that the ozone contact tank is arranged on an underground operation layer of an underground sewage treatment plant can be solved from the engineering level.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to an ozone contact tank. Background Technology

[0002] Currently, with urban expansion and construction, traditional above-ground wastewater treatment plants are severely limited by factors such as land use and development, leading to the rise of more environmentally friendly underground wastewater treatment plants. Simultaneously, national emission standards for wastewater treatment plants are becoming increasingly stringent, with various provinces successively issuing local Class IV emission standards that exceed the national Class A standard. Ozone contact oxidation technology, as a treatment process with good efficacy and relatively cleanliness, is widely used; however, due to the properties of ozone, its application in underground wastewater treatment plants is limited.

[0003] Therefore, an ozone contact tank is needed to address the engineering challenge of its placement in the underground operating layer of an underground wastewater treatment plant. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an ozone contact tank, which can solve the problem of installing ozone contact tanks in the underground operating layer of underground sewage treatment plants from an engineering perspective.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an ozone contact tank, comprising:

[0006] The pool is located below ground level and contains an ozone decomposition zone.

[0007] The exhaust gas destroyer has its inlet connected to the ozone decomposition zone, and its outlet is connected to the ground via an exhaust pipe.

[0008] An isolation gas collection hood is installed outside the exhaust gas destroyer, and a one-way air intake valve is provided on the side wall of the isolation gas collection hood.

[0009] An exhaust fan has its inlet connected to the isolation gas collection hood, and its outlet extends to the ground.

[0010] Preferably, a breathing valve is also included. The pool body is provided with an ozone reaction zone. One end of the breathing valve is connected to the ozone reaction zone, and the other end of the breathing valve is connected to the ground through a breathing pipe.

[0011] Preferably, the breathing valve is located inside the isolation gas collection hood.

[0012] Preferably, the top of the pool body is provided with an inspection port.

[0013] Preferably, the inspection port is located inside the isolation gas collection hood.

[0014] Preferably, an ozone leak alarm is also included, which is installed on the outside of the isolation gas collection hood.

[0015] Preferably, an ozone flow distributor is also included, which is disposed inside the isolation gas collection hood.

[0016] Preferably, a COD detector is installed at the end of the ozone decomposition zone.

[0017] Preferably, an ozone concentration detector is provided at the end of the ozone depletion zone.

[0018] Preferably, a control box is also included, which is electrically connected to the ozone flow distributor, the COD detector, and the ozone concentration detector.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The ozone contact pool provided by this utility model, by setting up an isolation gas collection hood, an exhaust fan and a one-way air inlet valve, forms a slightly negative pressure state inside the isolation gas collection hood, which effectively avoids the possibility of ozone overflow and creates conditions for the ozone contact pool to be placed underground.

[0021] 2. The ozone contact tank provided by this utility model solves the exhaust problem of the breathing valve and exhaust gas destroyer after the ozone contact tank is buried underground by setting the external pipe of the breathing valve and the external pipe of the exhaust gas destroyer directly to the ground.

[0022] 3. The ozone contact tank provided by this utility model sets up an ozone decomposition zone and installs an ozone concentration detector and a COD detector at the end of the ozone decomposition zone to detect the ozone concentration and COD concentration at the end and feed them back to the control box. The control box controls the ozone flow distributor to achieve precise ozone dosing and avoid excessive ozone dosing and overflow at the end. Attached Figure Description

[0023] Figure 1 A front view structural diagram of an ozone contact tank provided for an embodiment of this utility model;

[0024] Figure 2 A top view of an ozone contact tank provided for an embodiment of this utility model;

[0025] Figure 3 This is a top view of the isolation gas collection hood and related parts of an ozone contact tank provided in an embodiment of the present invention.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Isolation gas collection hood; 2. One-way air inlet valve; 3. Inspection port; 4. Breathing valve; 5. Exhaust gas destroyer; 6. Ozone flow distributor; 7. Ozone leak alarm; 8. COD detector; 9. Ozone concentration detector; 10. Control box; 11. Exhaust fan; 12. Tank body; 13. Ozone reaction zone; 14. Ozone decomposition zone; 15. Breathing pipeline; 16. Exhaust pipe; 17. Tail gas pipe; 18. Ozone aeration pipe. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to specific embodiments, so that those skilled in the art can more clearly understand the present invention.

[0029] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrally formed structures. Those skilled in the art can understand the specific meaning of these terms in this patent based on the specific circumstances.

[0030] See Figure 1-3 This embodiment provides an ozone contact tank, which is applied to a fully underground sewage treatment plant.

[0031] Specifically, the ozone contact tank includes:

[0032] The pool body 12 is located below ground level, with an operating layer between the pool body 12 and the ground. The pool body 12 contains an ozone reaction zone 13 and an ozone decomposition zone 14. The residence time in the ozone decomposition zone 14 can be set to 0.5 hours, allowing unreacted ozone to fully decay within the ozone decomposition zone 14, preventing it from escaping into the underground operating layer.

[0033] The exhaust gas destructor 5 has its inlet connected to the ozone depletion zone 14 via the exhaust pipe 17, and its outlet connected to the ground via the exhaust pipe 16. The exhaust gas destructor 5 is existing technology and is a device used to treat ozone-containing waste gas. Its main purpose is to convert incompletely decomposed ozone into harmless substances, such as oxygen, before it is released into the atmosphere, thereby reducing environmental pollution.

[0034] An isolation gas collection hood 1 is installed outside the exhaust gas destroyer 5. A one-way inlet valve 2 is installed on the side wall of the isolation gas collection hood 1. The one-way inlet valve 2 is existing technology and is a valve used to control the direction of gas flow. It allows gas to flow in one direction while preventing reverse flow. Here, the one-way inlet valve 2 only allows gas to enter the isolation gas collection hood 1 and does not allow gas to exit.

[0035] The isolation gas collection hood 1 is provided with an exhaust pipe through hole through which the exhaust pipe 16 passes, for example, see Figure 1The isolation gas collection hood 1 and the exhaust gas destroyer 5 are both located at the top of the pool body 12. One end of the exhaust pipe 16 is connected to the outlet of the exhaust gas destroyer 5, and the other end of the exhaust pipe 16 extends through the exhaust pipe through hole to the top of the isolation gas collection hood 1, and finally extends to the ground. The connection between the exhaust pipe 16 and the exhaust pipe through hole is sealed.

[0036] An exhaust fan 11 is installed inside the operating layer. The inlet of the exhaust fan 11 is connected to the isolation gas collection hood 1 through a pipe, and the outlet of the exhaust fan 11 extends to the ground through a pipe.

[0037] Based on the above structure, wastewater undergoes COD removal after reaction in ozone reaction zone 13, followed by ozone decomposition zone 14. Unreacted ozone in the water decays into oxygen after 0.5 hours. The remaining gas is treated by tail gas destroyer 5 and then discharged to the ground via exhaust pipe 16. The exhaust fan 11 draws gas from the isolation gas collection hood 1 to the ground, creating a slight negative pressure inside the hood 1. This effectively prevents ozone from overflowing into the operating layer, creating conditions for the ozone contact tank to be placed underground.

[0038] The ozone contact tank provided in this embodiment also includes a breathing valve 4. One end of the breathing valve 4 is connected to the ozone reaction zone 13, and the other end of the breathing valve 4 is connected to the ground via a breathing pipe 15. In this way, the tank body 12 can achieve balance by communicating with the outside world through the breathing valve 4 and the breathing pipe 15.

[0039] The breathing valve 4 is located inside the isolation gas collection hood 1. This prevents ozone leakage from the breathing valve 4 into the operating area.

[0040] The ozone contact tank provided in this embodiment has an inspection port 3 at the top of the tank body 12. The inspection port 3 is located inside the isolation gas collection hood 1. This can prevent ozone leakage from the inspection port 3 to the operating layer.

[0041] In summary, the ozone contact tank provided in this embodiment compactly integrates equipment such as the inspection port 3, breathing valve 4, and exhaust gas destroyer 5, and then completely covers it with an isolation gas collection hood 1. Through the matching exhaust fan 11 and one-way air inlet valve 2, the inside of the isolation gas collection hood 1 is always kept in a slightly negative pressure state, avoiding the possibility of ozone leakage in the event of an accident.

[0042] The ozone contact tank provided in this embodiment also includes an ozone leak alarm 7, which is installed outside the isolation gas collection hood 1. The ozone leak alarm 7 is existing technology and is a device used to detect the ozone concentration in the environment and issue an alarm. When the ozone concentration exceeds the safe range, the alarm will immediately sound an alarm, reminding personnel to take appropriate measures, such as stopping work and evacuating the site, to ensure personnel safety.

[0043] The ozone contact tank provided in this embodiment also includes an ozone flow distributor 6, which is disposed inside the isolation gas collection hood 1. For example, see... Figure 1 The ozone reaction zone 13 is equipped with an ozone aeration pipe 18, and an ozone flow distributor 6 is connected to the ozone aeration pipe 18. The ozone flow distributor 6 is used to distribute and control the amount of ozone added.

[0044] Example 2

[0045] Based on Example 1, in this example, a COD detector 8 is installed at the end of the ozone depletion zone 14. The COD detector is existing technology and is an instrument used to measure chemical oxygen demand (COD). It can quickly and accurately determine the organic matter content in water samples, helping to evaluate water quality and wastewater treatment effectiveness.

[0046] In this embodiment, an ozone concentration detector 9 is also installed at the end of the ozone depletion zone 14. The ozone concentration detector is existing technology and is a device used to measure the ozone concentration in the environment. It can monitor the ozone concentration in real time to ensure environmental safety.

[0047] The ozone contact tank provided in this embodiment also includes a control box 10, which can be a control box for an intelligent ozone dosing system, including a PLC control system. The control box 10 is electrically connected to the ozone flow distributor 6, the COD detector 8, and the ozone concentration detector 9, respectively.

[0048] By installing an ozone concentration detector 9 and a COD detector 8 at the end of the ozone depletion zone 14, the ozone concentration and COD concentration at the end are detected and fed back to the control box 10. The control box 10 controls the ozone flow distributor 6 to achieve precise ozone dosing and avoid excessive ozone dosing and overflow at the end.

[0049] The mechanisms, components, and parts in this invention that are not specifically described are all existing structures in the prior art and can be purchased directly from the market.

[0050] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0051] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An ozone contact tank, characterized in that, include: The pool body (12) is located below the ground, and the pool body (12) is provided with an ozone decomposition zone (14). The exhaust gas destroyer (5) has its inlet connected to the ozone depletion zone (14), and its outlet is connected to the ground via an exhaust pipe (16). An isolation gas collection hood (1) is installed outside the exhaust gas destroyer (5), and a one-way air intake valve (2) is provided on the side wall of the isolation gas collection hood (1). An exhaust fan (11) has its inlet connected to the isolation gas collection hood (1) and its outlet extends to the ground.

2. The ozone contact tank according to claim 1, characterized in that, It also includes a breathing valve (4), and an ozone reaction zone (13) is provided in the pool body (12). One end of the breathing valve (4) is connected to the ozone reaction zone (13), and the other end of the breathing valve (4) is connected to the ground through a breathing pipe (15).

3. An ozone contact tank according to claim 2, characterized in that, The breathing valve (4) is located inside the isolation gas collection hood (1).

4. An ozone contact tank according to claim 1, characterized in that, The top of the pool body (12) is provided with an inspection port (3).

5. An ozone contact tank according to claim 4, characterized in that, The inspection port (3) is located inside the isolation gas collection hood (1).

6. An ozone contact tank according to claim 1, characterized in that, It also includes an ozone leak alarm (7), which is located outside the isolation gas collection hood (1).

7. An ozone contact tank according to claim 1, characterized in that, It also includes an ozone flow distributor (6), which is located inside the isolation gas collection hood (1).

8. An ozone contact tank according to claim 7, characterized in that, A COD detector (8) is installed at the end of the ozone depletion zone (14).

9. An ozone contact tank according to claim 8, characterized in that, An ozone concentration detector (9) is installed at the end of the ozone depletion zone (14).

10. An ozone contact tank according to claim 9, characterized in that, It also includes a control box (10), which is electrically connected to the ozone flow distributor (6), the COD detector (8), and the ozone concentration detector (9).

Images