CN210711177U - Pig manure fermentation biogas slurry treatment system - Google Patents
Pig manure fermentation biogas slurry treatment system Download PDFInfo
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- CN210711177U CN210711177U CN201921576605.XU CN201921576605U CN210711177U CN 210711177 U CN210711177 U CN 210711177U CN 201921576605 U CN201921576605 U CN 201921576605U CN 210711177 U CN210711177 U CN 210711177U
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Abstract
The utility model discloses a pig manure fermentation natural pond liquid processing system, pig manure fermentation natural pond liquid gets into the equalizing basin after the grid interception, the play water of equalizing basin gets into integration nitrogen and phosphorus removal reactor, the waste water that comes out from integration nitrogen and phosphorus removal reactor gets into integration air supporting device, the delivery port of integration air supporting device links to each other with middle pond, the water in middle pond gets into the biochemical pond of AO, the water that comes out from the biochemical pond of AO gets into two heavy ponds, the sludge part in two heavy ponds flows back to the biochemical pond of AO, supernatant after two heavy pond sedimentation treatment gets into high-efficient sedimentation tank, the clear water of high-efficient sedimentation tank gets into catalytic oxidation reactor, the water that comes out from catalytic oxidation reactor gets into BAF biological filter, the play water of BAF biological filter gets into the clear water basin, the water of clear water tank is up to standard discharges. Greatly reduces the cost investment of enterprises and is beneficial to improving the economic benefit and the social benefit of the enterprises.
Description
Technical Field
The utility model relates to a pig manure fermentation natural pond liquid processing system belongs to the water treatment field.
Background
The breeding wastewater belongs to high-concentration organic wastewater which is difficult to treat. The COD of the livestock breeding wastewater is often as high as 6000mg/L, the water quality is sauced yellow, and the ammonia nitrogen content of the wastewater is high. At present, the main treatment mode is to perform anaerobic fermentation on the culture wastewater to produce methane according to local conditions.
The biogas slurry generated by the anaerobic fermentation of the pig manure is rich in quick-acting nutrients, wherein COD is up to 3000-4000, BOD5More than 1000, SS at 1000-1500, ammonia nitrogen more than 900, total nitrogen more than 1200, total phosphorus high, pH 7-8. If the treatment is improper, secondary pollution to the environment can be caused.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model aims to provide a pig manure fermentation natural pond liquid processing system finally makes the drainage discharge to reach standard, can stably satisfy town sewage treatment plant pollutant emission standard (GB 18918-2002) one-level A class standard.
In order to realize the purpose, the technical scheme of the utility model is that: a pig manure fermentation natural pond liquid processing system which characterized in that: the method comprises the steps that pig manure fermentation biogas slurry enters an adjusting tank after being intercepted by a grid, the effluent of the adjusting tank enters an integrated nitrogen and phosphorus removal reactor, the wastewater from the integrated nitrogen and phosphorus removal reactor enters an integrated air floatation device, the water outlet of the integrated air floatation device is connected with an intermediate water tank, the water from the intermediate water tank enters an A/O biochemical tank, the water from the A/O biochemical tank enters a secondary sedimentation tank, the sludge part of the secondary sedimentation tank flows back to an aerobic tank of the A/O biochemical tank, the supernatant subjected to secondary sedimentation treatment enters a high-efficiency sedimentation tank, the clear water of the high-efficiency sedimentation tank enters a catalytic oxidation reactor, the water from the catalytic oxidation reactor enters a BAF biological filter tank, the effluent of the BAF biological filter tank enters a clear water tank, and the water of the clear water tank reaches the standard and is discharged.
By adopting the scheme, the effluent water intercepted by the grating enters the regulating tank, the quality and the quantity of the wastewater are regulated, and the effluent water is lifted by the pump to enter the integrated nitrogen and phosphorus removal system to remove pollutants such as nitrogen, phosphorus and the like in the wastewater.
The effluent treated by the integrated nitrogen and phosphorus removal system enters an integrated air floatation device to further remove COD (chemical oxygen demand) contained in the wastewaterCrAmmonia nitrogen, SS and other pollutants.
The effluent treated by the integrated air floatation device enters an intermediate water tank, is lifted by a pump into an A/O biochemical tank after the water quality and the water quantity are equalized, and COD (chemical oxygen demand) in the wastewater is removedCr、BOD5And ammonia nitrogen and other pollutants.
The effluent treated by the A/O biochemical tank enters a secondary sedimentation tank to realize effective separation of sludge and water and remove COD contained in the wastewaterCr、BOD5Ammonia nitrogen, SS and other pollutants.
The effluent treated by the secondary sedimentation tank enters a high-efficiency sedimentation tank to further remove the COD of the wastewaterCr、BOD5Ammonia nitrogen, SS, chromaticity and other pollutants.
The effluent treated by the high-efficiency sedimentation tank enters a catalytic oxidation reactor to decompose refractory organic matters contained in the wastewater into small molecular substances, improve the biodegradability of the wastewater and remove COD contained in the wastewaterCr、BOD5And color, etc.
The effluent after catalytic oxidation treatment enters a BAF biological filter tank to further remove COD contained in the wastewaterCrAnd pollutants such as ammonia nitrogen, total nitrogen and the like, and the wastewater is discharged after reaching the standard.
In the scheme, the method comprises the following steps: and water in the clean water tank is pumped to a backwashing water inlet of the BAF biological filter through a backwashing pump, and backwashing water of the BAF biological filter enters the intermediate water tank.
In the scheme, the method comprises the following steps: the sludge of the integrated nitrogen and phosphorus removal reactor, the scum of the integrated air flotation device, the residual sludge of the secondary sedimentation tank, the precipitated sludge of the efficient sedimentation tank and the precipitated sludge of the catalytic oxidation reactor enter a sludge concentration tank, the sludge of the sludge concentration tank is transported outside after being dewatered by a dewatering machine, and the supernatant of the sludge concentration tank and the filtrate of the dewatering machine enter a regulating tank.
Has the advantages that: the utility model discloses a pig manure fermentation natural pond liquid processing system's pig manure fermentation natural pond liquid is through behind preliminary treatment, integration nitrogen and phosphorus removal system, integration air supporting device, the biochemical pond of AO, sedimentation tank, catalytic oxidation reaction, BAF biological filter processing. Finally, the standard discharge of the pig manure fermentation biogas slurry is realized, the cost investment of enterprises is greatly reduced, and the economic benefit and the social benefit of the enterprises are improved.
Drawings
Fig. 1 is a process flow diagram of the present invention.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
in the case of the example 1, the following examples are given,
the feed water quality of the pig manure biogas slurry is as follows:
as shown in fig. 1, the pig manure fermentation biogas slurry treatment system is composed of a grid 1, an adjusting tank 2, an integrated nitrogen and phosphorus removal reactor 3, an integrated air flotation device 4, an intermediate water tank 5, an a/O biochemical tank 6, a secondary sedimentation tank 7, a high-efficiency sedimentation tank 8, a catalytic oxidation reactor 9, a BAF biological filter tank 10, a clean water tank 11, a sludge concentration tank 12, a dehydrator 13, corresponding pumps, connecting pipelines and the like.
The pig manure fermentation biogas slurry is intercepted by the grating 1 and then enters the regulating tank 2, and the quality and the quantity of the wastewater are regulated. The effluent from the regulating tank 2 enters an integrated nitrogen and phosphorus removal reactor 3, and phosphate, magnesium salt, PAC and PAM are added into the integrated nitrogen and phosphorus removal reactor 3 to further remove COD contained in the wastewaterCrAmmonia nitrogen, SS and other pollutants.
The wastewater from the integrated denitrification and dephosphorization reactor 3 enters an integrated air floatation device 4, PAC and PAM are added into the integrated air floatation device 4, and COD contained in the wastewater is further removedCrAmmonia nitrogen, SS and other pollutants.
The water outlet of the integrated air flotation device 4 is connected with the intermediate water tank 5, and water enters the intermediate water tank 5 and is uniformly mixed with the water quality and the water quantity. The water in the intermediate water tank 5 enters an A/O biochemical tank 6 to remove COD in the wastewaterCr、BOD5And ammonia nitrogen and other pollutants.
The water from the A/O biochemical tank 6 enters a secondary sedimentation tank 7, the sludge part of the secondary sedimentation tank 7 returns to an aerobic tank of the A/O biochemical tank 6, the supernatant fluid after the sedimentation treatment of the secondary sedimentation tank 7 enters a high-efficiency sedimentation tank 8, and the COD of the wastewater is further removedCr、BOD5Ammonia nitrogen, SS, chromaticity and other pollutants.
Clear water of the high-efficiency sedimentation tank 8 enters a catalytic oxidation reactor 9, acid, oxidant, PAC and PAM are added into the catalytic oxidation reactor 9, organic matters which are difficult to degrade and contained in the wastewater are decomposed into micromolecular substances, the biodegradability of the wastewater is improved, and COD (chemical oxygen demand) contained in the wastewater is removedCr、BOD5And color, etc.
The water from the catalytic oxidation reactor 9 enters a BAF biological filter 10 to further remove COD contained in the wastewaterCrAnd pollutants such as ammonia nitrogen, total nitrogen and the like, and the effluent of the BAF biological filter 10 enters a clean water tank 11 for temporary storage and is finally discharged after reaching the standard. The water in the clean water tank 11 is pumped to a backwashing water inlet of the BAF biological filter 10 through a backwashing pump, and the backwashing water of the BAF biological filter 11 enters the intermediate water tank 5.
The sludge of the integrated nitrogen and phosphorus removal reactor 3, the scum of the integrated air flotation device 4, the residual sludge of the secondary sedimentation tank 7, the precipitated sludge of the efficient sedimentation tank 8 and the precipitated sludge of the catalytic oxidation reactor 9 enter a sludge concentration tank 12, the sludge of the sludge concentration tank 12 is dewatered by a dewatering machine 13 and then transported outwards, and the supernatant of the sludge concentration tank 12 and the filtrate of the dewatering machine 13 enter an adjusting tank 2.
The quality of the discharged water treated by the system can stably meet the first class A standard of pollutant discharge standard (GB 18918-2002) of urban sewage treatment plants, and finally reaches the standard for discharge.
| Contaminant item | Maximum limit of execution criteria | Contaminant item | Maximum limit of execution criteria |
| PH | 6-9 | BOD | 10mg/L |
| Color intensity | 30 times of | SS | 10mg/L |
| COD | 50mg/L | Ammonia nitrogen | 8mg/L |
| Total phosphorus | 0.5mg/L | Total nitrogen | 15mg/L |
| Animal and vegetable oil | 1mg/L | Anionic surfactants | 0.5mg/L |
| Petroleum products | 1mg/L | Faecal coliform count (number/L) | 1000 |
The present invention is not limited to the above embodiments, and those skilled in the art can understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (3)
1. A pig manure fermentation natural pond liquid processing system which characterized in that: the method comprises the steps that pig manure fermentation biogas slurry enters an adjusting tank after being intercepted by a grid, the effluent of the adjusting tank enters an integrated nitrogen and phosphorus removal reactor, the wastewater from the integrated nitrogen and phosphorus removal reactor enters an integrated air floatation device, the water outlet of the integrated air floatation device is connected with an intermediate water tank, the water in the intermediate water tank enters an A/O biochemical tank, the water from the A/O biochemical tank enters a secondary sedimentation tank, the sludge part of the secondary sedimentation tank flows back to an aerobic tank of the A/O biochemical tank, the supernatant subjected to secondary sedimentation treatment enters a high-efficiency sedimentation tank, the clear water of the high-efficiency sedimentation tank enters a catalytic oxidation reactor, the water from the catalytic oxidation reactor enters a BAF biological filter tank, and the effluent of the BAF biological filter tank reaches the standard and is discharged after entering a clear water tank.
2. The pig manure fermentation biogas slurry treatment system according to claim 1, characterized in that: and water in the clean water tank is pumped to a backwashing water inlet of the BAF biological filter through a backwashing pump, and backwashing water of the BAF biological filter enters the intermediate water tank.
3. The pig manure fermentation biogas slurry treatment system according to claim 1 or 2, characterized in that: the sludge of the integrated nitrogen and phosphorus removal reactor, the scum of the integrated air flotation device, the residual sludge of the secondary sedimentation tank, the precipitated sludge of the efficient sedimentation tank and the precipitated sludge of the catalytic oxidation reactor enter a sludge concentration tank, the sludge of the sludge concentration tank is transported outside after being dewatered by a dewatering machine, and the supernatant of the sludge concentration tank and the filtrate of the dewatering machine enter a regulating tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921576605.XU CN210711177U (en) | 2019-09-20 | 2019-09-20 | Pig manure fermentation biogas slurry treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921576605.XU CN210711177U (en) | 2019-09-20 | 2019-09-20 | Pig manure fermentation biogas slurry treatment system |
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| CN210711177U true CN210711177U (en) | 2020-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698042A (en) * | 2021-09-07 | 2021-11-26 | 湖南华腾环保科技有限公司 | Breeding wastewater treatment process |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698042A (en) * | 2021-09-07 | 2021-11-26 | 湖南华腾环保科技有限公司 | Breeding wastewater treatment process |
| CN113698042B (en) * | 2021-09-07 | 2023-08-08 | 湖南华腾环保科技有限公司 | Cultivation wastewater treatment process |
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Effective date of registration: 20221014 Address after: 31-a3, Tower B, 2 Nanping West Road, Nan'an District, Chongqing 400060 Patentee after: CHONGQING JIERUN TECHNOLOGY Co.,Ltd. Address before: 400015 2-5, No.4, jialingqiao West Village, Yuzhong District, Chongqing Patentee before: Chongqing Si Tong Technology Co.,Ltd. |
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