VOCs waste gas treatment device adopting activated sludge method

Abstract

The utility model discloses a VOCs (Volatile Organic Compounds) waste gas treatment device adopting an activated sludge process, which comprises a shell, a water tank and a purification component capable of purifying VOCs waste gas by using activated sludge, the purification component is arranged in the shell, and the bottom of the shell is communicated with the top of the water tank; an air inlet is formed in the side face of the bottom of the shell, an air outlet is formed in the middle of the top, and a purification cavity is formed in the middle; the purification assembly comprises a conveying pipeline for conveying the activated sludge to the top of the purification cavity, a plurality of spraying pipelines, a plurality of spraying nozzles for spraying the activated sludge to the purification cavity, and a plurality of layers of grid plates which correspond to the spraying pipelines and can re-disperse the activated sludge to fully increase the contact area between the activated sludge and the VOCs waste gas; compared with the prior art, the investment cost is low: a waste gas treatment device is a normal-temperature and normal-pressure device, and the manufacturing cost is low; 2, the operation cost is low: the activated sludge is wide in source, the activated sludge in an aerobic tank in a sewage treatment plant can be used, and an activated sludge culture device can be matched, so that the operation cost is low;

Description

Technical Field

[0001] The utility model provides a VOCs waste gas treatment device which adopts an activated sludge method. Background Art

[0002] VOCs are organic compounds that are volatile and harmful at room temperature and pressure. They include linear hydrocarbons, cycloalkanes, aromatic hydrocarbons, oxygenated compounds, benzene series, and halogenated hydrocarbons. They not only participate in atmospheric photochemical reactions but also have adverse effects on human health, such as damage to the liver, kidneys, brain, and nervous system, and may even cause cancer.

[0003] Conventional VOCs treatment processes include condensation recovery, adsorption, plasma, photocatalytic oxidation, and combustion. These treatment processes have the following disadvantages:

[0004] 1. The condensation recovery method is only applicable to high-concentration VOCs waste gas with recovery value. For low-concentration or non-recoverable VOCs waste gas, the condensation recovery method has high equipment investment and high operating costs and is of no use value.

[0005] 2. The adsorption method uses activated carbon for adsorption. Activated carbon is a hazardous waste and has the problem of secondary pollution.

[0006] 3. Plasma and photocatalytic oxidation methods are only suitable for low-concentration VOCs odorous gases. They are not effective in treating medium- and high-concentration exhaust gases, and it is difficult for emissions to meet standards.

[0007] 4. The combustion method is only applicable to high-concentration exhaust gas and is a high-temperature and high-pressure equipment with high investment cost and high operating risk. Utility Model Content

[0008] In view of the above, the present invention provides a VOCs waste gas treatment device using an activated sludge method to solve the problems existing in the above-mentioned prior art.

[0009] According to one aspect of the present invention, a VOCs waste gas treatment device using an activated sludge method is provided, comprising a housing, a water tank, and a purification component capable of purifying VOCs waste gas using activated sludge, wherein the purification component is disposed within the housing, and the bottom of the housing is connected to the top of the water tank;

[0010] The bottom side of the shell is provided with an air inlet, the middle position of the top is provided with an air outlet, and the middle position is a purification chamber;

[0011] The purification assembly includes a transport pipe for transporting the activated sludge to the top of the purification chamber, multiple spray pipes, multiple spray nozzles for spraying the activated sludge into the purification chamber, and multiple layers of grid plates corresponding to the spray pipes that can redisperse the activated sludge to fully increase the contact area between the activated sludge and the VOCs exhaust gas. The spray pipe is evenly fixed in the spray chamber laterally, the transport pipe passes through the bottom side of the shell, the inlet of the spray pipe is connected to the transport pipe, the spray nozzles are evenly distributed at the bottom of the spray pipe and communicate with the inside of the spray pipe. The grid plates are arranged one by one below the spray pipe and are connected to the inner wall of the purification chamber on all sides.

[0012] The transport pipeline is also provided with a pump body, and the head end of the transport pipeline is connected to a sludge box body.

[0013] Preferably, a demister is further provided on the upper portion of the shell.

[0014] Preferably, the side surface is also provided with a plurality of inspection openings.

[0015] Preferably, the transport pipeline is also provided with an activated sludge switch.

[0016] The beneficial effects of the present invention are:

[0017] 1. Low investment cost: The exhaust gas treatment device is a normal temperature and pressure device with low manufacturing cost.

[0018] 2. Low operating cost: Activated sludge has a wide range of sources. It can use the activated sludge in the aerobic tank of the sewage treatment plant, or it can be equipped with an activated sludge cultivation device, which has low operating costs.

[0019] 3. There are no other pollutants during operation and no secondary pollution problem.

[0020] 4. The special internal structure increases the contact between activated sludge and waste gas, improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the planar structure of the utility model;

[0022] In the figure, 1. Outer shell; 2. Water tank; 3. Air inlet; 4. Air outlet; 5. Purification chamber; 6. Transport pipe; 7. Spray pipe; 8. Spray nozzle; 9. Grid plate; 10. Demister; 11. Inspection port; 12. Activated sludge switch. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and some embodiments.

[0024] Figure 1A VOCs waste gas treatment device using an activated sludge method includes a housing 1, a water tank 2, and a purification component that can use activated sludge to purify VOCs waste gas. The purification component is arranged in the housing 1, and the bottom of the housing 1 is connected to the top of the water tank 2;

[0025] The housing 1 is provided with an air inlet 3 on the bottom side, an air outlet 4 at the top middle position, and a purification chamber 5 in the middle position;

[0026] The purification assembly includes a transport pipe 6 for transporting the activated sludge to the top of the purification chamber 5, a plurality of spray pipes 7, a plurality of spray nozzles 8 for spraying the activated sludge into the purification chamber 5, and multiple layers of mesh plates 9 corresponding to the spray pipes 7, which can redisperse the activated sludge and fully increase the contact area between the activated sludge and the VOCs exhaust gas. The spray pipe 7 is evenly fixed in the spray chamber laterally, the transport pipe 6 passes through the bottom side of the shell 1, and the inlet of the spray pipe 7 is connected to the transport pipe 6. The spray nozzles 8 are evenly distributed at the bottom of the spray pipe 7 and are connected to the inside of the spray pipe 7. The mesh plates 9 are arranged one by one below the spray pipe 7 and are connected to the inner wall of the purification chamber 5 on all sides.

[0027] The transport pipe 6 is further provided with a pump body, and the head end of the transport pipe 6 is connected to a sludge box body, and the pump body is used to extract the activated sludge in the sludge box body.

[0028] In this embodiment, a demister 10 is further provided on the upper portion of the housing 1 to remove mist generated during the exhaust gas treatment process.

[0029] In this embodiment, a plurality of inspection ports 11 are further provided on the side surface, so that the components in the housing 1 can be inspected and repaired regularly.

[0030] In this embodiment, an activated sludge switch 12 is further provided on the transport pipeline 6 .

[0031] In the specific implementation of this embodiment:

[0032] Turn on the activated sludge switch 12, and the activated sludge is sprayed downward from the spray nozzle 8. The VOCs waste gas enters from the air inlet 3, passes through the purification chamber 5, and fully contacts with the microorganisms in the sprayed activated sludge, thereby purifying the VOCs waste gas, and then discharged through the air outlet 4.

[0033] In this embodiment, the control circuit of the present invention is a common circuit in the circuit field. The device of the present invention can be connected to an external power supply or a built-in battery through a power cord to provide power to the device. Technicians in the relevant technical field can implement it and will not be elaborated here.

[0034] It is worth noting that: in the description of this utility model, the meaning of "plurality" is two or more, unless otherwise clearly specified and specifically defined. In this utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; the circuits described in this utility model are all commonly used circuits in the field, and other related components are all existing commonly used components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and is intended to encompass all variations within the meaning and scope of the claims. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

Claims

1. A VOCs waste gas treatment device using an activated sludge process, characterized by: It includes a shell, a water tank, and a purification component that can use activated sludge to purify VOCs exhaust gas. The purification component is arranged in the shell, and the bottom of the shell is connected to the top of the water tank; The bottom side of the shell is provided with an air inlet, the middle position of the top is provided with an air outlet, and the middle position is a purification chamber; The purification assembly includes a transport pipe for transporting the activated sludge to the top of the purification chamber, multiple spray pipes, multiple spray nozzles for spraying the activated sludge into the purification chamber, and multiple layers of grid plates corresponding to the spray pipes that can redisperse the activated sludge to fully increase the contact area between the activated sludge and the VOCs exhaust gas. The spray pipe is evenly fixed in the spray chamber laterally, the transport pipe passes through the bottom side of the shell, the inlet of the spray pipe is connected to the transport pipe, the spray nozzles are evenly distributed at the bottom of the spray pipe and communicate with the inside of the spray pipe. The grid plates are arranged one by one below the spray pipe and are connected to the inner wall of the purification chamber on all sides. The transport pipeline is also provided with a pump body, and the head end of the transport pipeline is connected to a sludge box body.

2. The VOCs waste gas treatment device using the activated sludge process according to claim 1, characterized in that: A demister is also provided on the upper portion of the shell.

3. The VOCs waste gas treatment device using the activated sludge process according to claim 2, characterized in that: The side surface is also provided with a plurality of inspection openings.

Images