Odor treatment and recovery system

Abstract

The utility model discloses an odor treatment and recovery system which comprises a to-be-treated gas collecting pipe, a nitrogen recovery mechanism and an exhaust pipe which are sequentially connected in a matched mode, the nitrogen recovery mechanism is used for treating to-be-treated odor which is conveyed by the to-be-treated gas collecting pipe and comes from a breeding house into odorless gas, and the exhaust pipe is used for exhausting the odorless gas; the nitrogen recovery mechanism comprises a biological filter, a sedimentation tank, a spraying device and a gas distribution device, the spraying device and the gas distribution device are arranged in the biological filter, the biological filter is filled with activated sludge and connected with the sedimentation tank through a sludge conveying pipe, the activated sludge is conveyed to the sedimentation tank through the sludge conveying pipe, and a sludge discharging pipe is arranged on the lower portion of the sedimentation tank; the sludge discharge pipe is connected with the sedimentation tank and the excrement temporary storage tank; the spraying device is connected with the medicament box through the circulating water pipe; a gas hood is arranged at the tail end of the to-be-treated gas collecting pipe, is positioned in the biological filter tank, prevents mist and to-be-treated odor from flowing back into the to-be-treated gas collecting pipe, and fixes nitrogen elements in the odor into sludge for composting.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stench treatment recycling technical field, concretely is a kind of stench treatment recycling system. BACKGROUND

[0002] Breeding industry is the pillar industry of northern rural economy, and in recent years, large-scale breeding industry pollution has become the bottleneck of restricting the development of rural economy.Among them, nitrogen pollution produced in breeding house is one of the sources of agricultural non-point source pollution.Because food safety production is a major issue related to national economy and people's livelihood, if the problem of breeding industry pollution in northern rural areas is not solved, it may bring great hidden trouble to the healthy development of agricultural economy.Therefore, carrying out quantitative detection of ammonia emission in northern breeding industry, nitrogen pollution reduction and control technology of manure resource can better promote the healthy and sustainable development of breeding industry, and developing breeding manure resource is conducive to promoting the development of circular economy in agriculture, and the economic benefit is very significant.

[0003] The defects of the existing stench treatment of the house are: (1) direct discharge: the stench carries a large amount of ammonia pollution to the environment; (2) after the circulating water used by the traditional treatment equipment is saturated, wastewater is discharged, polluting the environment; (3) the traditional treatment method only aims to treat, and the nitrogen element in the stench cannot be utilized. UTILITY MODEL CONTENT

[0004] In order to solve the above problems, the utility model provides a kind of stench treatment recycling system, including the cooperation of sequentially connected gas collection pipe, nitrogen recovery mechanism and exhaust pipe, the nitrogen recovery mechanism is used to handle the stench gas from breeding house delivered by gas collection pipe into odorless gas, the exhaust pipe is used to discharge the odorless gas;

[0005] The nitrogen recovery mechanism includes a biological filter, a sedimentation tank, a spraying device and a gas distribution device, the spraying device and the gas distribution device are arranged inside the biological filter, the biological filter is filled with activated sludge, the biological filter is connected to the sedimentation tank through a sludge conveying pipe, the activated sludge is conveyed to the sedimentation tank through the sludge conveying pipe, the upper part of the sedimentation tank is provided with a circulating water pipe, the circulating water pipe is connected to the sedimentation tank and the spraying device, and the lower part is provided with a sludge discharge pipe, which is connected to the sedimentation tank and the manure temporary storage tank.

[0006] The end of the gas collection pipe is provided with a gas hood, the gas hood is located inside the biological filter, and the gas hood prevents fine mist and untreated stench from flowing back into the gas collection pipe.

[0007] Further, the gas hood includes a skeleton and a baffle, a plurality of baffles are linearly arranged on the skeleton, and the angle between the baffle and the skeleton is less than 10 degrees.

[0008] Further, the skeleton is conical or hemispherical.

[0009] Further, the air distribution device comprises a support frame fixedly connected to the top of the biofilter and a filler filled in the support frame, the bottom of the support frame is higher than the level of the activated sludge in the biofilter, and the filler is uniformly arranged in the support frame.

[0010] Further, the support frame is in a flat plate shape.

[0011] Further, the spraying device comprises a spraying pipe, a first spraying head and a second spraying head, the spraying pipe comprises a horizontal pipe arranged at the top of the biofilter and a vertical pipe arranged in the biofilter, the first spraying head is arranged on the horizontal pipe and sprays vertically downward, and the second spraying head is arranged on the vertical pipe and sprays toward the air inlet direction, and the second spraying head is located downstream of the first spraying head.

[0012] Further, the end of the to-be-treated gas collecting pipe is provided with an anti-backflow pipe, the anti-backflow pipe is in a U shape, and the highest position of the anti-backflow pipe is higher than the inlet of the biofilter.

[0013] Further, the exhaust pipe is connected with a gas exhaust fan, and the end of the exhaust pipe is connected with a chimney, the gas exhaust fan is used for conveying odorless gas from the biofilter to the chimney, and the chimney comprises an ammonia gas sensor used for detecting the ammonia gas concentration in the exhaust gas.

[0014] Further, the first end of the exhaust pipe is provided with a demister, the demister is located in the biofilter and wraps the inlet of the exhaust pipe, and the demister comprises a baffle and a water absorbent.

[0015] Further, a medicament tank is connected to the circulating water pipe, and the medicament tank continuously adds medicament into the circulating water pipe.

[0016] The utility model has the advantages of the following:

[0017] The odor treatment and recovery system of the application solves the problem that a large amount of ammonia gas is carried out of the gas discharge in the house to pollute the environment by means of the biofilter and the spraying device spraying acid solution, the nitrogen element in the odor is mixed with breeding manure to be composted and reused as a nitrogen source applied to farmland, the second spraying head is arranged in the opposite air flow direction, the fixed wall type air distribution device is arranged, the gas is uniformly contacted with the spraying circulating liquid, the reaction time is increased, the deodorization efficiency is increased, and the fixed wall type air distribution device makes the gas and liquid contact uniformly and improves the treatment efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the structural schematic diagram of the utility model.

[0019] Figure 2 is the structural schematic diagram of the gas cover.

[0020] Figure 3is a schematic view of one embodiment of a skeleton.

[0021] Figure 4 is a schematic view of another embodiment of a skeleton.

[0022] Figure 5 is a side view of a folded plate. DETAILED DESCRIPTION

[0023] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the embodiments described are examples of implementations and are not intended to be limiting. Embodiments described below are examples of implementations and are not intended to be limiting.

[0024] Referring to Figure 1 The present application provides a kind of odor treatment recycling system, including the cooperation of being connected in sequence with gas collection pipe 1, nitrogen recovery mechanism and exhaust pipe 3, the nitrogen recovery mechanism is used to be transported from the odor gas of breeding circle house in gas collection pipe 1, and is handled into odorless gas, the exhaust pipe 3 is used to discharge the odorless gas;

[0025] Nitrogen recovery mechanism includes biological filter 2, sedimentation tank 10, spraying device 5 and air distribution device 6, spraying device 5 and air distribution device 6 are arranged in the inside of biological filter 2, biological filter 2 is filled with activated sludge, biological filter 2 is connected with sedimentation tank 10 by sludge pipe 9, and activated sludge treated by odor is transported to sedimentation tank 10 by sludge pipe 9, and mud and water are separated in sedimentation tank 10, and circulating water pipe 11 is arranged at the upper portion of sedimentation tank 10, circulating water pipe 11 is connected with sedimentation tank 10 and spraying device 5, and sludge pipe 15 is arranged at the lower portion, sludge pipe 15 is connected with sedimentation tank 10 and fecal matter temporary storage tank 13, and the clarified liquid at the upper portion of sedimentation tank 10 is returned to spraying device 5 as circulating water, and the sludge at the lower portion of sedimentation tank 10 is transported to fecal matter temporary storage tank 13 by sludge pipe 15;

[0026] The end of gas collection pipe 1 is provided with gas cover 4, and the gas cover 4 is located in the inside of biological filter 2, and the gas cover 4 prevents fine mist and odor to be treated from flowing back into the gas collection pipe 1.

[0027] The exhaust pipe 3 is connected with gas exhaust fan 8, and the exhaust pipe 3 is connected with chimney 14 at the end, and the gas exhaust fan 8 transports odorless gas from the biological filter 2 to the chimney 14, and the chimney 14 includes ammonia gas sensor, for detecting the ammonia concentration in exhaust gas.

[0028] Referring to Figure 2 The gas cover 4 includes skeleton 401 and baffle 402, a plurality of baffles 402 are linearly arranged on the skeleton 401, and the included angle between the baffle 402 and the skeleton 401 is less than 10 degrees. Referring to Figure 3 And Figure 4The frame 401 is conical or hemispherical. The baffle 402 is fixedly connected to the frame 401, and the frame 401 passes through the baffle 402. Specifically, the projected portions of the baffle 402 overlap, and the liquid sprayed by the spraying device 5 falls on the surface of the baffle 402 without entering the gas collection pipe 1.

[0029] The aeration device 6 includes a support frame 601 fixedly connected to the top of the biological filter 2 and packing material 602 filled within the support frame 601. The bottom of the support frame 601 is higher than the horizontal plane of the activated sludge in the biological filter 2. The packing material 602 is evenly distributed within the support frame 601. Multiple aeration devices 6 are arranged perpendicular to the airflow direction, allowing the odorous gas to be evenly distributed within the biological filter 2. The support frame 601 is flat. The center of the conical support frame 601 is at the same horizontal height as the center of the air hood 4, and its protrusion direction is the same as that of the air hood 4. The conical support frame 601 can increase the gas passage area and reduce gas accumulation caused by the short distance between the center of the air hood 4 and the aeration device 6, thus improving the aeration effect.

[0030] The spray device 5 includes a spray pipe 16, a first spray head 501, and a second spray head 502. The spray pipe 16 includes a horizontal pipe installed at the top of the biological filter 2 and a vertical pipe installed inside the biological filter 2. The first spray head 501 is installed on the horizontal pipe with its spray direction vertically downwards, and the second spray head 502 is installed on the vertical pipe with its spray direction facing the incoming air direction. The second spray head 502 is located downstream of the first spray head 501. There are multiple sets of both the first spray head 501 and the second spray head 502. The second spray head 502 is located in front of the air distribution device 6, and the gas passes through the second spray head 502 first and then through the air distribution device 6.

[0031] The end of the gas collection pipe 1 is equipped with an anti-backflow pipe 101, which is shaped like a "Z". The highest point of the anti-backflow pipe 101 is higher than the inlet of the biological filter 2. The odorous gas to be treated flows from the gas collection pipe 1 through the anti-backflow pipe 101 into the biological filter 2. The anti-backflow pipe 101 may include a long vertical branch pipe, a short vertical branch pipe, and a horizontal branch pipe connected in the middle. The short vertical branch pipe is connected to the biological filter and the gas hood, the long vertical branch pipe is connected to the gas collection pipe, and the horizontal branch pipe is higher than the gas hood.

[0032] A demister 7 is installed at the first end of the exhaust pipe 3. The demister 7 is located inside the biological filter 2 and surrounds the inlet of the exhaust pipe 3. The demister 7 includes a baffle plate 701 and a water absorbent 702. Specifically, the demister 7 is an existing multi-faceted baffle demister, see [link to relevant documentation]. Figure 5, multiple folding plate 701 along the direction of airflow arrangement, folding plate 701 on the opening to accommodate water-absorbing agent 702 cavity, cavity content water-absorbing agent 702. Biofilter 2 in the odorless gas through the demister 7 into the exhaust pipe 3, odorless gas carrying water mist and demister 7 collision, remove the odorless gas carrying water mist.

[0033] Biofilter 2 bottom set of sludge pipe 9, sludge pipe 9 connecting biofilter 2 and sedimentation tank 10, sludge pipe 9 connected with sludge pump, said sedimentation tank 10 lower part is provided with sludge discharge pipe 15, sludge discharge pipe 15 connecting sedimentation tank 10 and fecal temporary storage tank 13, said sedimentation tank 10 bottom sludge through sludge discharge pipe 15 connected fecal temporary storage tank 13, the bottom sludge into the fecal temporary storage tank 13 in the breeding plant, complete ammonia recovery process; sedimentation tank 10 can be inclined plate sedimentation tank, for prior art, not described here.

[0034] The circulating water pipe 11 is connected with the agent tank 12, the agent tank 12 continuously adds medicine to the circulating water pipe 11, and the circulating water after adding medicine is sprayed into the biofilter 2 from the spraying device 5. The agent tank 12 contains an acidic solution.

[0035] Working principle: the odor gas to be treated is dispersed into the biofilter 2 by the gas cover 4, and is fully mixed, contacted and reacted with the acidic liquid sprayed by the first spray head 501 arranged at the top before passing through the biofilter 2. The odor gas to be treated is fully mixed and fused again with the liquid sprayed by the first spray head 501 before reaching the first gas distribution device 6, so as to remove the dust in the gas and most of the ammonia gas, and the process is repeated in the rear chamber of the biofilter 2. The demister 7 removes the water mist carried by the gas, and the gas is discharged from the biofilter 2 under the action of the gas exhaust fan 8 and is discharged through the chimney 14 arranged at the end of the exhaust pipe 3. The biofilter 2 is connected with the sedimentation tank 10 through the sludge pipe 9, the sludge pipe 9 transports the activated sludge treated by the odor gas to the sedimentation tank 10, and the sludge is separated and deposited in the sedimentation tank 10. The sludge deposited in the lower part of the sedimentation tank 10 is discharged into the fecal temporary storage tank 13 through the sludge discharge pipe 15. The acidic solution in the agent tank 12 is mixed and sprayed in the biofilter 2 through the spraying device 5.

Claims

1. An odor treatment recovery system characterized by, The application relates to a nitrogen recovery device for livestock houses. The nitrogen recovery device comprises a biological filter, a sedimentation tank, a spraying device and a gas distribution device, the spraying device and the gas distribution device are arranged in the biological filter, the biological filter is filled with activated sludge, the biological filter is connected with the sedimentation tank through a sludge conveying pipe, the activated sludge is conveyed to the sedimentation tank through the sludge conveying pipe, the upper portion of the sedimentation tank is provided with a circulating water pipe, the circulating water pipe is connected with the sedimentation tank and the spraying device, and the lower portion of the sedimentation tank is provided with a sludge discharge pipe which is connected with the sedimentation tank and a manure temporary storage tank. The end of the treated gas collecting pipe is provided with a gas cover, the gas cover is arranged in the biological filter, and the gas cover prevents fine mist and treated odor from flowing back into the treated gas collecting pipe. The gas cover comprises a framework and a plurality of flow baffles which are linearly arranged on the framework, and the included angle between the flow baffles and the framework is less than 10 degrees.

2. The odor treatment and recovery system of claim 1, wherein, The framework is conical or hemispherical.

3. The odor treatment and recovery system of claim 2, wherein, The gas distribution device comprises a support frame fixedly connected to the top of the biological filter and a filler filled in the support frame, the bottom of the support frame is higher than the level of the activated sludge in the biological filter, the filler is uniformly arranged in the support frame, a plurality of gas distribution devices are arranged vertically to the airflow direction, and the gas distribution device makes the odor uniformly distributed in the biological filter.

4. The odor treatment and recovery system of claim 1, wherein, The support frame is a flat plate.

5. The odor treatment and recovery system of claim 4, wherein, The spraying device comprises a spraying pipe, a first spraying head and a second spraying head, the spraying pipe comprises a horizontal pipe arranged at the top of the biological filter and a vertical pipe arranged in the biological filter, the first spraying head is arranged on the horizontal pipe and sprays vertically downward, the second spraying head is arranged on the vertical pipe and sprays toward the airflow direction, and the second spraying head is located downstream of the first spraying head.

6. The odor treatment and recovery system of claim 1, wherein, The end of the treated gas collecting pipe is provided with an anti-backflow pipe, the anti-backflow pipe is in the shape of a Chinese character 'zheng', and the highest position of the anti-backflow pipe is higher than the inlet of the biological filter.

7. The odor treatment and recovery system of claim 1, wherein The exhaust pipe is connected with a gas exhaust fan, the end of the exhaust pipe is connected with a chimney, the gas exhaust fan conveys the odorless gas from the biological filter to the chimney, the chimney comprises an ammonia gas sensor for detecting the ammonia gas concentration in the exhaust gas.

8. The odor treatment and recovery system of claim 1, wherein, The first end of the exhaust pipe is provided with a demister, the demister is arranged in the biological filter, the demister wraps the inlet of the exhaust pipe, and the demister comprises a folded plate and a water absorbing agent.

9. The odor treatment and recovery system of claim 1, wherein, A medicament tank is connected to the circulating water pipe, and the medicament tank continuously adds medicament into the circulating water pipe.

10. The odor treatment and recovery system of claim 1, wherein, ​

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