Kitchen waste odor treatment method

Abstract

The invention discloses a kitchen waste odor treatment method, which comprises an alkali rotational flow plate tower, an acid spray packed tower, a plant liquid spray packed tower, a photocatalytic oxidation device, an induced draft fan and a discharge port, and the kitchen waste odor sequentially passes through the alkali rotational flow plate tower, the acid spray packed tower, the plant liquid spray packed tower, the photocatalytic oxidation device, the induced draft fan and the discharge port. The device has the advantages that the occupied area is reduced, the photocatalytic oxidation device is prevented from being damaged, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of restaurant kitchen waste odor treatment, and in particular to a restaurant kitchen waste odor treatment method. Background Art

[0002] The treatment of food waste requires sealed negative pressure deodorization of the treatment equipment, and also requires negative pressure deodorization of the entire food waste treatment workshop. The odor extracted from the food waste treatment equipment under negative pressure carries a large amount of grease. To ensure that the entire workshop is in a negative pressure state, the air volume to be treated is quite large. The removal of grease in the odor must be completed in the first step of the deodorization system, and the large deodorization air volume causes the deodorization system to occupy a particularly large area. In previous operating projects, the photocatalytic oxidation lamps were often burned by the water vapor brought out by the front-end spray tower.

[0003] The present application provides a method for treating odor from kitchen waste to solve the above-mentioned problem. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing kitchen waste odor treatment requires a considerable deodorizing air volume, which results in a particularly large area occupied by the deodorizing system. In addition, the light tube is often burned by the water vapor brought out by the front-end spray tower during photocatalytic oxidation. Therefore, a method for treating kitchen waste odor is provided, and the method for treating kitchen waste odor comprises: The odor of the kitchen waste is introduced into the lower part of the alkaline cyclone plate tower through a pipeline, and the odor of the kitchen waste contacts the alkaline liquid film on the surface of the three-layer cyclone plate in the alkaline cyclone plate tower to remove the acidic odor. The alkaline liquid circulating in the alkaline cyclone plate tower is heated to 40° C. to remove the grease in the odor of the kitchen waste. The odor of the kitchen waste treated for the first time is output from the pipeline at the upper part of the alkaline cyclone plate tower; The first treated kitchen waste odor is output from the pipeline at the top of the alkaline cyclone plate tower and then connected to the bottom of the acid spray packed tower. The alkaline odor of the first treated kitchen waste odor is removed by the acid absorbent in the acid spray packed tower. The second treated kitchen waste odor is output from the pipeline at the top of the acid spray packed tower. The second processed kitchen waste odor is output from the pipeline at the top of the acid spray packing tower and then connected to the lower part of the plant liquid spray packing tower. The second processed kitchen waste odor passes through the lower spray system of the plant liquid spray tower and the upper spray system of the plant liquid spray tower in turn. The third processed kitchen waste odor is output from the pipeline at the top of the plant liquid spray tower. The odor of the kitchen waste treated for the third time is output from the top pipe of the plant liquid spray tower and then connected to the photocatalytic oxidation device, wherein the number of the photocatalytic oxidation devices is multiple, and a regulating valve is provided on the pipe before entering the photocatalytic oxidation device; The odor of the kitchen waste treated by the photocatalytic oxidation device is discharged into the atmosphere through the induced draft fan and the exhaust port.

[0005] Furthermore, there are two photocatalytic oxidation devices, which are arranged one above the other.

[0006] Furthermore, a hot water heating coil is provided at the lower part of the alkali cyclone plate tower, an alkaline agent spraying mechanism is provided at the upper part of the alkali cyclone plate tower, the alkaline agent spraying mechanism is connected to an external large-scale storage tank alkali dosing device, a temperature sensor and a heating mechanism are provided in the large-scale storage tank alkali dosing device, and an online alkali pH meter is provided on the spray pipeline in the alkali cyclone plate tower.

[0007] Furthermore, the lower layer filler of the plant liquid spray packing tower adopts ball rings, and the upper layer filler of the plant liquid spray packing tower adopts multi-faceted hollow balls. The upper layer spray system and the lower layer spray system are arranged separately. When the plant liquid spray packing tower operates normally, only the lower layer spray system is turned on.

[0008] Furthermore, a gas flow meter is provided at the air inlet of the photocatalytic oxidation device, and the gas flow meter is electrically connected to the electric regulating valve.

[0009] Furthermore, the acid spray packed tower is equipped with a large storage tank dual dosing device, and an online acid pH meter is provided on the spray pipeline in the acid spray packed tower.

[0010] Furthermore, the plant liquid spray packing tower is equipped with a large-scale storage tank plant liquid dosing device.

[0011] Furthermore, an online pollution concentration monitor is provided at the discharge port.

[0012] The implementation of the present invention has the following beneficial effects: 1. The present invention provides a sound cavity structure for reducing low-frequency traps and resonance THD of surface sound sources, which can be widely used in rail transit car sunroofs, windshields and other glass, as an overall technical solution. It effectively solves the low-frequency traps, standing waves and resonance problems caused by the increase of sound pressure in the surface sound field of music glass, making the sound quality of surface sound sources better restored and pleasant to the ears. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a flow chart of the present invention. DETAILED DESCRIPTION The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0014] Please refer to the instruction manual Figure 1-2 This embodiment provides a method for treating odor from kitchen waste, the method comprising: The odor of the kitchen waste is introduced into the lower part of the alkaline cyclone plate tower 1 through a pipeline, and the odor of the kitchen waste contacts the alkaline liquid film on the surface of the three-layer cyclone plate in the alkaline cyclone plate tower 1 to remove the acidic odor. The alkaline liquid circulated in the alkaline cyclone plate tower 1 is heated to 40° C. to remove the grease in the odor of the kitchen waste. The odor of the kitchen waste treated for the first time is output from the pipeline at the upper part of the alkaline cyclone plate tower; The first treated kitchen waste odor is output from the pipeline at the top of the alkaline cyclone plate tower 1 and then connected to the bottom of the acid spray packed tower 2. The alkaline odor of the first treated kitchen waste odor is removed by the acid absorbent in the acid spray packed tower 2. The second treated kitchen waste odor is output from the pipeline at the top of the acid spray packed tower 2. The second processed kitchen waste odor is output from the pipeline at the top of the acid spray packed tower 2 and then connected to the lower part of the plant liquid spray packed tower 3. The second processed kitchen waste odor passes through the lower spray system of the plant liquid spray tower 3 and the upper spray system of the plant liquid spray tower in turn. The third processed kitchen waste odor is output from the pipeline at the top of the plant liquid spray tower 3. The odor of the kitchen waste after the third treatment is output from the top pipe of the plant liquid spray tower 3 and connected to the photocatalytic oxidation device 4. There are multiple photocatalytic oxidation devices 4, and a regulating valve is provided on the pipe before entering the photocatalytic oxidation device 4. The odor of the kitchen waste treated by the photocatalytic oxidation device 4 is discharged into the atmosphere through the induced draft fan and the exhaust port.

[0015] There are two photocatalytic oxidation devices, which are arranged vertically.

[0016] A hot water heating coil is arranged at the lower part of the alkali cyclone plate tower, an alkaline agent spraying mechanism is arranged at the upper part of the alkali cyclone plate tower, the alkaline agent spraying mechanism is connected with an external large-scale storage tank alkali dosing device, a temperature sensor and a heating mechanism are arranged in the large-scale storage tank alkali dosing device, and an online alkali pH meter is arranged on the spraying pipeline in the alkali cyclone plate tower.

[0017] The lower packing of the plant liquid spray packing tower adopts ball rings, and the upper packing of the plant liquid spray packing tower adopts multi-faceted hollow balls. The upper spray system and the lower spray system are separately arranged. When the plant liquid spray packing tower operates normally, only the lower spray system is opened.

[0018] A gas flow meter is arranged at the air inlet of the photocatalytic oxidation device, and the gas flow meter is electrically connected to the electric regulating valve.

[0019] The acid spray packing tower is equipped with a large storage tank double dosing device, and an online acid pH meter is installed on the spray pipeline in the acid spray packing tower.

[0020] The plant liquid spray packing tower is equipped with a large tank plant liquid dosing device.

[0021] An online monitoring instrument for pollution concentration is installed at the discharge port.

[0022] The specific implementation process of this embodiment includes: The odor enters from the bottom of the alkali cyclone plate tower 1 and is discharged from the top, where it contacts the alkaline liquid film on the surface of the three-layer cyclone plate to remove acidic odors such as H2S. A hot water heating coil 1.2 is set in the alkali cyclone plate tower 1. The temperature of the alkaline absorbent is controlled at 40°C through the temperature sensor 1.3, which effectively removes the grease carried in the odor of the kitchen waste. The alkali cyclone plate tower is equipped with a large-scale storage tank alkali dosing device 1.1. The online alkali pH meter 1.4 on the spray circulation pipeline of the alkali cyclone plate tower realizes automatic dosing of the large-scale storage tank alkali dosing device 1.1.

[0023] The odor discharged from the alkaline cyclone plate tower 1 enters the lower part of the acid spray packed tower 2 and is discharged from the top, and the alkaline odor such as NH3 is removed by the acid absorbent. The acid spray packed tower 2 is equipped with a large-scale storage tank acid dosing device 2.1, and the large-scale storage tank acid dosing device 2.1 is automatically dosing through the online acid pH meter 2.2 on the spray circulation pipeline of the acid spray packed tower.

[0024] The acid spray packing tower 2 discharges the odor into the lower part of the plant liquid spray packing tower 3 and is discharged from the top. The lower packing 3.2 of the plant liquid spray packing tower 3 adopts ball rings, and the upper packing 3.3 adopts multi-faceted hollow balls with larger surface area. The upper spray system 3.4 and the lower spray system 3.5 are separately set. During normal operation, only the lower spray system 3.5 is turned on. The upper packing 3.3 is used as a reinforced defoaming system to effectively remove the water vapor entrained in the gas, prevent the water vapor from entering the rear-end photocatalytic oxidation device 4, extend the service life of the photocatalytic oxidation device 4, and enhance the use effect of the photocatalytic oxidation device 4. When the odor concentration fluctuates to a high concentration, the upper spray system 3.4 and the lower spray system 3.5 are turned on at the same time. The plant liquid spray packing tower 3 is equipped with a large storage tank plant liquid dosing device 3.1, and the large storage tank plant liquid dosing device 3.1 is automatically dosing through the discharge port gas pollutant concentration online monitor 6.1. The plant liquid is used to fully absorb and decompose the odor pollutants.

[0025] The exhaust gas from the plant liquid spraying packing tower 3 enters the photocatalytic oxidation device 4. Before entering the photocatalytic oxidation device, the gas flow meter 4.1 feedback signal is used to automatically adjust the electric regulating valve 4.2 to evenly distribute the air intake of the upper and lower photocatalytic oxidation devices. The photocatalytic oxidation device 4 quickly decomposes odor pollutants.

[0026] The exhaust gas of the photocatalytic oxidation device 4 is discharged into the atmosphere through the induced draft fan 5 and the exhaust port 6 .

[0027] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for treating odor from kitchen waste, characterized in that: include: The odor of the kitchen waste is introduced into the lower part of the alkaline cyclone plate tower through a pipeline, and the odor of the kitchen waste contacts the alkaline liquid film on the surface of the three-layer cyclone plate in the alkaline cyclone plate tower to remove the acidic odor. The alkaline liquid circulating in the alkaline cyclone plate tower is heated to 40° C. to remove the grease in the odor of the kitchen waste. The odor of the kitchen waste treated for the first time is output from the pipeline at the upper part of the alkaline cyclone plate tower; The first treated kitchen waste odor is output from the pipeline at the top of the alkaline cyclone plate tower and then connected to the bottom of the acid spray packed tower. The alkaline odor of the first treated kitchen waste odor is removed by the acid absorbent in the acid spray packed tower. The second treated kitchen waste odor is output from the pipeline at the top of the acid spray packed tower. The second processed kitchen waste odor is output from the pipeline at the top of the acid spray packing tower and then connected to the lower part of the plant liquid spray packing tower. The second processed kitchen waste odor passes through the lower spray system of the plant liquid spray tower and the upper spray system of the plant liquid spray tower in turn. The third processed kitchen waste odor is output from the pipeline at the top of the plant liquid spray tower. The odor of the kitchen waste treated for the third time is output from the top pipe of the plant liquid spray tower and then connected to the photocatalytic oxidation device, wherein the number of the photocatalytic oxidation devices is multiple, and a regulating valve is provided on the pipe before entering the photocatalytic oxidation device; The odor of the kitchen waste treated by the photocatalytic oxidation device is discharged into the atmosphere through the induced draft fan and the exhaust port.

2. The method for treating kitchen waste odor according to claim 1, characterized in that: The number of the photocatalytic oxidation devices is two, and the two photocatalytic oxidation devices are arranged up and down.

3. The method for treating odor from kitchen waste according to claim 1, characterized in that: A hot water heating coil is arranged at the lower part of the alkali cyclone plate tower, an alkaline agent spraying mechanism is arranged at the upper part of the alkali cyclone plate tower, the alkaline agent spraying mechanism is connected with an external large-scale storage tank alkali dosing device, a temperature sensor and a heating mechanism are arranged in the large-scale storage tank alkali dosing device, and an online alkali pH meter is arranged on the spray pipeline in the alkali cyclone plate tower.

4. The method for treating odor from kitchen waste according to claim 3, characterized in that: The lower layer packing of the plant liquid spray packing tower adopts ball rings, and the upper layer packing of the plant liquid spray packing tower adopts multi-faceted hollow balls. The upper layer spray system and the lower layer spray system are separately arranged. When the plant liquid spray packing tower operates normally, only the lower layer spray system is turned on.

5. The method for treating kitchen waste odor according to claim 1, characterized in that: A gas flow meter is provided at the air inlet of the photocatalytic oxidation device, and the gas flow meter is electrically connected to the electric regulating valve.

6. The method for treating odor from kitchen waste according to claim 5, characterized in that: The acid spray packed tower is equipped with a large storage tank double dosing device, and an online acid pH meter is arranged on the spray pipeline in the acid spray packed tower.

7. The method for treating odor from kitchen waste according to claim 1, characterized in that: The plant liquid spray packing tower is equipped with a large tank plant liquid dosing device.

8. The method for treating odor from kitchen waste according to claim 1, characterized in that: An online monitoring instrument for pollution concentration is arranged at the discharge port.

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