Odor treatment device for rear end of sewage treatment plant

Abstract

The utility model discloses an odor treatment device used at the rear end of a sewage treatment plant, which comprises a tower body, a plurality of filler layers arranged at the bottom of the tower body, sprayers arranged at the top of each filler layer, a plasma deodorization layer arranged above the filler layers, an atomization deodorization layer arranged above the plasma deodorization layer, and a water tank arranged above the atomization deodorization layer, according to the device, after water-soluble pollutants in odor are adsorbed through the arrangement of the filler layer and the spray header, the odor can be removed through the dual deodorization capability of the plasma deodorization layer and the atomization deodorization layer, and the odor can be removed through the atomization absorption layer; the treatment efficiency and the treatment effect on pollutants in the odor are further improved, and the odor treatment capacity is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of environmental protection equipment especially relates to a stench treatment device for sewage treatment plant rear end. BACKGROUND

[0002] With the acceleration of urbanization and the increase of industrial wastewater discharge, sewage treatment plant as the core facility of water environment governance, the waste gas stench problem produced in the operation process is increasingly prominent. The sewage treatment plant rear end process (such as sludge dewatering, disinfection, advanced treatment and other links) can release a large amount of waste gas containing volatile organic compounds (VOCs), hydrogen sulfide (H2S), ammonia (NH3) and methyl mercaptan (CH3SH) and other malodorous pollutants. These gases not only have strong irritating odor but also cause various problems, pollute the environment, cause health risks to workers and surrounding residents, and bring equipment corrosion wind direction to production equipment in the sewage treatment plant.

[0003] In view of these problems, the prior art mainly adopts the following processing methods:

[0004] Biological method: such as biological filter, biological membrane method, which relies on microorganism degradation of odor molecules, but is limited by temperature, humidity and poison tolerance, the treatment efficiency is unstable, and it is difficult to deal with sudden odor concentration fluctuation.

[0005] Physical adsorption method: such as activated carbon adsorption, ion exchange resin, although it can quickly remove odor, but the adsorption material regeneration is difficult, the service life is short, and there is the risk of secondary pollution.

[0006] Chemical method: such as alkali spraying absorption (NaOH), ozone oxidation, which can effectively neutralize acidic gas, but the operation energy consumption is high, and may generate sulfate and other refractory by-products.

[0007] Incineration method: high temperature incineration of malodorous gas can realize harmlessness, but the investment cost is high, and it is suitable for high concentration waste gas scene, and the economy is poor for low concentration dispersed waste gas.

[0008] It is not difficult to see that the existing waste gas treatment technology generally has the problems of low treatment efficiency, high energy consumption and poor adaptability, which cannot meet the fine, low cost and sustainability requirements of sewage treatment plant rear end waste gas treatment. In view of the above problems, the application provides a solution. SUMMARY

[0009] The utility model aims at providing a stench treatment device for sewage treatment plant rear end, which can improve the treatment efficiency of stench and reduce the treatment cost.

[0010] ​​​The utility model relates to a kind of stench treatment device for sewage treatment plant rear end, including tower body, it is characterized by: the bottom of the tower body is provided with multiple layers of packing layer, the top of each layer of the packing layer is provided with sprayer, the upper of the packing layer is provided with plasma deodorization layer, the upper of the plasma deodorization layer is provided with atomization deodorization layer, the upper of the atomization deodorization layer is provided with atomization absorption layer, the top of the atomization absorption layer is provided with air outlet.

[0011] After the stench enters tower body from the air inlet in the bottom of tower body, part of toxic substance is dissolved in water sprayed by sprayer after passing through packing layer, and then follows liquid water to drop back into packing layer and is oxidized, part of toxic substance in stench is removed by multiple cycles, and the remaining toxic substance continuously rises into plasma deodorization layer, hydrogen sulfide, ammonia, methyl mercaptan and other pollutants in stench are decomposed in plasma, and the remaining gas enters atomization deodorization layer again, and is further dissolved and oxidized with atomized deodorization liquid, and is deposited in atomization absorption layer and then flows back into water collector, and finally, the stench treated by multiple treatments is discharged through the air outlet in the top of tower body.

[0012] Preferably, the bottom of the tower body is provided with a water tank, the water tank collects the backflow water in the tower body, and a circulating water pump is arranged on the water tank, and the outlet of the circulating water pump is connected to the sprayer.

[0013] The water collected by the water tank from top to bottom in the tower body is then delivered to the sprayer by the circulating water pump, and the water is sprayed from the sprayer to dissolve with the stench, thereby improving the use efficiency of water.

[0014] Preferably, the water tank is provided with a forced liquid supplement port, an automatic liquid supplement port and a liquid level meter, the forced liquid supplement port and the automatic liquid supplement port are connected to an external water source to supplement the water in the water tank, and the liquid level meter extends into the water tank to detect the liquid level in the water tank.

[0015] The water tank is automatically supplemented by the automatic liquid supplement port, and the water tank is manually supplemented by the forced liquid supplement port after the water level in the water tank is observed by the liquid level meter, so that there is enough water in the water tank to spray into the tower body to dissolve with the harmful substances in the stench that can be dissolved in water.

[0016] Preferably, a water collector for collecting the backflow liquid above the packing layer is arranged between the plasma deodorization layer and the packing layer.

[0017] The water collector is arranged to collect the backflow liquid above the packing layer to prevent the liquid from flowing back into the bottom of the tower body and polluting the water participating in the circulation.

[0018] Preferably, an electric mesh frame is arranged at the top and the bottom of the plasma deodorization layer, and a discharge device for generating plasma is arranged between the electric mesh frames.

[0019] As preferred, the atomized deodorization layer is provided with a high-pressure pump or ultrasonic equipment for atomizing the deodorization liquid.

[0020] The high-pressure pump or ultrasonic equipment atomizes the deodorization liquid, increases the surface area of the liquid, and improves the combination of odor molecules through Van der Waals force or electrostatic adsorption, thereby capturing and settling the odor molecules.

[0021] As preferred, the atomized absorption layer is filled with honeycomb or corrugated fillers.

[0022] The honeycomb or corrugated filler structure can enable the water mist to be captured by inertia collision, interception and diffusion on the surface of the fillers, and finally return to the water tank or water collector.

[0023] As preferred, the bottom of the filler layer, the plasma deodorization layer, the atomized deodorization layer and the atomized absorption layer is provided with a hollow support bracket.

[0024] The support bracket is used to fix and position the equipment between the treatment layers, and the hollow design enables the liquid to return to the water tank or water collector.

[0025] As preferred, the tower body is uniformly provided with a plurality of manholes.

[0026] Advantages: compared with the prior art, the utility model has the following advantages:

[0027] The utility model improves the treatment efficiency and effect of the pollutants in the odor by the double deodorization capacity of the plasma deodorization layer and the atomized deodorization layer after the pollutants soluble in water in the odor are adsorbed by the filler layer and the spray head, improves the treatment capacity of the odor, and reduces the demand for water source by introducing the recyclable water system in the tower body, thereby further reducing the processing cost. BRIEF DESCRIPTION OF DRAWINGS

[0028] Fig. 1 It is a sectional view of the utility model.

[0029] Fig. 2 It is a side view of the utility model.

[0030] Fig. 3 It is a top view of the utility model.

[0031] 1, tower body; 2, filler layer; 3, sprayer; 4, plasma deodorization layer; 5, atomized deodorization layer; 6, atomized absorption layer; 7, air outlet; 8, water tank; 9, circulating water pump; 10, forced liquid supplement port; 11, automatic liquid supplement port; 12, liquid level meter; 13, water collector; 14, power grid frame; 15, discharge equipment; 16, manhole; 17, air inlet. DETAILED DESCRIPTION

[0032] The technical scheme of the utility model will be further explained in connection with the drawings.

[0033] Embodiment 1

[0034] Referring to the drawings Figs. 1-3 The odor deodorization device for the back end of a sewage treatment plant comprises a tower body 1, two layers of filler layers 2 are arranged at the bottom of the tower body 1, a sprayer 3 is arranged at the top of each filler layer 2, a plasma deodorization layer 4 is arranged above the filler layer 2, an atomization deodorization layer 5 is arranged above the plasma deodorization layer 4, an atomization absorption layer 6 is arranged above the atomization deodorization layer 5, and an air outlet 7 is arranged at the top of the atomization absorption layer 6.

[0035] In the embodiment, a water tank 8 is arranged at the bottom of the tower body 1, the water tank 8 collects the backflow water in the tower body 1, a circulating water pump 9 is arranged on the water tank 8, the water outlet of the circulating water pump 9 is connected to the sprayer 3, and after the water backflowing from top to bottom in the tower body 1 is collected in the water tank 8, the water is retransmitted to the sprayer 3 through the circulating water pump 9, and the water is sprayed out of the sprayer 3 and dissolved with the odor, thereby improving the use efficiency of the water.

[0036] In the embodiment, a forced liquid supplementing port 10, an automatic liquid supplementing port 11 and a liquid level meter 12 are arranged on the water tank 8, the forced liquid supplementing port 10 and the automatic liquid supplementing port 11 are connected to an external water source to supplement the water source in the water tank 8, the liquid level meter 12 extends into the water tank 8 to detect the liquid level height in the water tank 8, the water in the water tank 8 is automatically supplemented through the automatic liquid supplementing port 11, and the water in the water tank 8 is manually supplemented through the forced liquid supplementing port 10 after the water level in the water tank 8 is observed through the liquid level meter 12, so that it can be ensured that there is enough water in the water tank 8 to be sprayed into the tower body 1 and dissolved with the harmful substances in the odor that can be dissolved in water.

[0037] In the embodiment, a water collector 13 for collecting the backflow liquid above the filler layer 2 is arranged between the plasma deodorization layer 4 and the filler layer 2, the water collector 13 is arranged to collect the backflow liquid above the filler layer 2 to prevent the liquid from backflowing into the bottom of the tower body 1 and polluting the water participating in the circulation.

[0038] In the embodiment, an electric mesh frame 14 is arranged at the top and the bottom of the plasma deodorization layer 4, and a discharge device 15 for generating plasma is arranged between the electric mesh frame 14, the plasma is generated to decompose the hydrogen sulfide, ammonia and methyl mercaptan and other pollutants in the odor in the plasma.

[0039] In the embodiment, a high-pressure pump or an ultrasonic device for atomizing the deodorization liquid is arranged in the atomization deodorization layer 5, after the deodorization liquid is atomized, the surface area of the liquid is increased, the odor molecules are captured and settled through the van der Waals force or electrostatic adsorption after being combined with the odor molecules through the van der Waals force or electrostatic adsorption.

[0040] In the embodiment, the atomized absorption layer 6 is filled with honeycomb or corrugated filler. The honeycomb or corrugated filler structure can make the water mist captured by the inertia collision, interception and diffusion on the surface of the filler and finally backflow without following the gas out.

[0041] In the embodiment, the tower body is uniformly provided with a plurality of manholes 16 for daily maintenance of the tower body 1.

[0042] Embodiment 2:

[0043] In the embodiment, the bottom of the filler layer 2, the plasma deodorization layer 4, the atomized deodorization layer 5 and the atomized absorption layer 6 is provided with a hollow support bracket. The support bracket can support the equipment on the filler layer 2, the plasma deodorization layer 4, the atomized deodorization layer 5 and the atomized absorption layer 6. The hollow support bracket can make the liquid in the filler layer 2 backflow into the water tank 8 at the bottom of the tower body 1 to participate in the recycling of water. The liquid in the plasma deodorization layer 4, the atomized deodorization layer 5 and the atomized absorption layer 6 can backflow into the water collector 13 to prevent the liquid from backflowing into the bottom of the tower body 1 and polluting the water participating in the recycling.

[0044] Embodiment 3:

[0045] In the working process of the device, the odor enters the tower body 1 from the air inlet 17 at the bottom of the tower body 1, passes through the filler layer 2, and part of the toxic substances dissolved in the water sprayed by the sprayer 3 backflow into the filler layer 2. After multiple times, the odor is removed. The remaining toxic substances continuously rise into the plasma deodorization layer 4. The hydrogen sulfide, ammonia and methyl mercaptan in the odor are decomposed in the plasma. The remaining gas enters the atomized deodorization layer 5 again, is further dissolved and oxidized with the atomized deodorization liquid, and backflows into the water collector 13 after being deposited in the atomized absorption layer 6. Finally, the odor treated by multiple processes is discharged through the air outlet 7 at the top of the tower body 1.

[0046] The above embodiments only exemplarily illustrate the principle and effect of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A device for treating odors from the backend of a sewage treatment plant, comprising a tower body, characterized in that: The bottom of the tower body is provided with multiple layers of filler layers, the top of each of the filler layers is provided with a sprayer, the upper part of the filler layers is provided with a plasma deodorization layer, the upper part of the plasma deodorization layer is provided with an atomization deodorization layer, the upper part of the atomization deodorization layer is provided with an atomization absorption layer, and the top of the atomization absorption layer is provided with an air outlet.

2. The odor treatment device for the back end of a sewage treatment plant according to claim 1, characterized in that: The bottom of the tower body is provided with a water tank for collecting backflow water in the tower body, and a circulating water pump is arranged on the water tank, and the water outlet of the circulating water pump is connected with the sprayer.

3. A device for treating odors from the backend of a sewage treatment plant according to claim 2, characterized in that: The water tank is provided with a forced liquid supplement port, an automatic liquid supplement port and a liquid level meter, the forced liquid supplement port and the automatic liquid supplement port are connected with an external water source to supplement the water source in the water tank, and the liquid level meter extends into the water tank to detect the liquid level height in the water tank.

4. The odor treatment device for the back end of a sewage treatment plant according to claim 1, characterized in that: A water collector for collecting backflow liquid above the filler layers is arranged between the plasma deodorization layer and the filler layers.

5. The odour treatment device for the backend of a sewage treatment plant according to claim 1, characterized in that: The top and bottom of the plasma deodorization layer are provided with electric mesh frames, and discharge devices for generating plasma are arranged between the electric mesh frames.

6. The odour treatment device for the backend of a sewage treatment plant according to claim 1, characterized in that: The atomization deodorization layer is provided with a high-pressure pump or an ultrasonic device for atomizing deodorization liquid.

7. The odour treatment device for the backend of a sewage treatment plant according to claim 1, characterized in that: The atomization absorption layer is filled with honeycomb-shaped or corrugated fillers.

8. The odour treatment device for the backend of a sewage treatment plant according to claim 1, characterized in that: The bottom of each of the filler layers, the plasma deodorization layer, the atomization deodorization layer and the atomization absorption layer is provided with a hollow support bracket.

9. The odour treatment device for the backend of a sewage treatment plant according to claim 1, characterized in that: Multiple manholes are uniformly arranged on the tower body.

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