CN221014924U - Biogas slurry high-efficiency solid-liquid separation system - Google Patents
Biogas slurry high-efficiency solid-liquid separation system Download PDFInfo
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- CN221014924U CN221014924U CN202322488462.XU CN202322488462U CN221014924U CN 221014924 U CN221014924 U CN 221014924U CN 202322488462 U CN202322488462 U CN 202322488462U CN 221014924 U CN221014924 U CN 221014924U
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- liquid separation
- separation system
- biogas
- solid
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- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 239000002002 slurry Substances 0.000 title claims abstract description 39
- 238000000926 separation method Methods 0.000 title claims abstract description 33
- 239000010802 sludge Substances 0.000 claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 28
- 239000002351 wastewater Substances 0.000 claims abstract description 17
- 238000000746 purification Methods 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 36
- 238000003825 pressing Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000006477 desulfuration reaction Methods 0.000 claims description 4
- 230000023556 desulfurization Effects 0.000 claims description 4
- 244000144972 livestock Species 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 7
- 239000010865 sewage Substances 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 22
- 244000144977 poultry Species 0.000 description 8
- 230000003009 desulfurizing effect Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000011272 standard treatment Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The utility model provides a biogas slurry high-efficiency solid-liquid separation system, belonging to the technical field of sewage treatment; the key points of the technical scheme are as follows: the system comprises a CSTR anaerobic tank communicated with livestock wastewater, a biogas purification system and a multi-stage solid-liquid separation system, wherein the gas outlet end of the biogas purification system is communicated with a combustion chamber in a drying device, and the mud outlet pipe of the multi-stage solid-liquid separation system is communicated with the drying chamber in the drying device; the utility model is provided with the multistage solid-liquid separation system, so that the biogas slurry after anaerobic treatment is sufficiently filtered, the filtered sludge enters a drying chamber, and the heat is provided by a burner taking the purified biogas generated after anaerobic treatment as fuel, so that the sludge in the drying chamber is dried, and the drying time of the sludge is reduced; therefore, the system effectively separates solid from liquid of the biogas slurry, can well reduce the sludge content in the biogas slurry and simultaneously quickens the process of entering the follow-up treatment of the sludge.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a biogas slurry high-efficiency solid-liquid separation system.
Background
The livestock and poultry raising manure is wastewater containing high organic matters and high ammonia nitrogen, and along with the intensive and large-scale development of livestock and poultry raising industry, the wastewater yield is increased increasingly, and if the wastewater is not properly disposed, serious pollution and hazard can be caused; biogas fermentation technology is generally adopted at home and abroad to treat so as to reduce organic pollution and recycle biogas, but the biogas fermentation technology cannot remove ammonia nitrogen, and discharged anaerobic digestion liquid (biogas slurry) still contains a large amount of organic matters and high-concentration nitrogen and phosphorus substances, and is directly discharged, so that serious pollution is caused to water.
At present, for livestock and poultry raising wastewater biogas slurry treatment, three modes of a returning mode, a natural treatment mode and an anaerobic treatment mode are mainly adopted; in the past decades, returning to the field is a main mode of biogas slurry treatment, and with the continuous development of intensive and large-scale cultivation industry, the soil nearby can be overnourished due to long-term returning to the field, so that serious water and soil pollution is caused; the natural treatment is the most economical biogas slurry purification method, and has the defects of large occupied area, easily influenced treatment effect by climatic seasons, easily caused release of ammonia gas and greenhouse gas (GHG) and the like, so the applicability is limited; therefore, the mode of anaerobic treatment of biogas slurry is an unavoidable choice for farms.
In some existing biogas slurry aerobic treatment systems, the biogas slurry separation system is simpler, usually only comprises a single separator or filter and other devices, can not perform effective solid-liquid separation, can not well reduce the solid content in the biogas slurry, is unfavorable for subsequent biochemical treatment, and secondly, when the sludge is separated out, a natural drying mode is generally adopted, and the mode influences the process of subsequent treatment of the sludge.
Disclosure of utility model
The utility model aims to provide a biogas slurry high-efficiency solid-liquid separation system, which aims to solve the problems of the background technology. In order to achieve the above purpose, the present utility model provides the following technical solutions: the system comprises a CSTR anaerobic tank communicated with livestock wastewater, a biogas purification system and a multistage solid-liquid separation system, wherein the biogas purification system and the multistage solid-liquid separation system are respectively communicated with the CSTR anaerobic tank, the gas outlet end of the biogas purification system is communicated with a combustion chamber in a drying device, and the mud outlet pipe of the multistage solid-liquid separation system is communicated with the drying chamber in the drying device.
Further, the multistage solid-liquid separation system comprises a slurry centrifugal dehydrator and a plate-and-frame filter pressing device which are sequentially communicated with the CSTR anaerobic tank, and a slurry outlet of the slurry centrifugal dehydrator and the plate-and-frame filter pressing device is communicated with the drying chamber.
Further, a liquid outlet of the plate-and-frame filter pressing device is communicated with a lower-stage sludge treatment system.
Further, the biogas purification system comprises a gas-water separator and a desulfurizing device which are sequentially communicated with the gas outlet of the CSTR anaerobic tank.
Further, the gas outlet of the desulfurization device is communicated with a methane storage bag, the gas outlet of the methane storage bag is communicated with a gas pressurizing device, and the gas outlet end of the gas pressurizing device is communicated with the combustion chamber.
Further, the gas outlet of the gas pressurizing device is also communicated with a methane pipeline with a valve, and the methane pipeline is communicated with a civil methane pipeline.
Compared with the prior art, the utility model has the beneficial effects that:
The utility model is provided with the multistage solid-liquid separation system, so that the biogas slurry after anaerobic treatment is fully subjected to solid-liquid separation, the filtered sludge enters a drying chamber, and the sludge is dried by a burner, thereby reducing the time for drying the sludge; wherein, the burner takes methane which is produced after anaerobic treatment and purified as fuel; therefore, the system effectively separates solid from liquid of the biogas slurry, can well reduce the sludge content in the biogas slurry and simultaneously quickens the process of entering the follow-up treatment of the sludge.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Wherein: 1. a CSTR anaerobic tank; 2. a drying device; 3. a slurry centrifugal dehydrator; 4. a plate-frame filter pressing device; 5. a gas-water separator; 6. a desulfurizing device; 7. a biogas storage bag; 8. a biogas pipeline; 9. and a gas pressurizing device.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
Examples: referring to fig. 1, a biogas slurry high-efficiency solid-liquid separation system comprises a CSTR anaerobic tank 1 communicated with livestock and poultry wastewater, wherein the high-concentration livestock and poultry wastewater directly enters the CSTR anaerobic tank 1, and after long-time anaerobic treatment, manure and organic matters in the high-concentration livestock and poultry wastewater are fully hydrolyzed, so that removal of COD and organic macromolecules is realized on one hand, and maximized gas production is realized on the other hand; the system also comprises a biogas purification system and a multi-stage solid-liquid separation system which are respectively communicated with the CSTR anaerobic tank 1, wherein the gas outlet end of the biogas purification system is communicated with a combustion chamber in the drying device 2, the mud outlet pipe of the multi-stage solid-liquid separation system is communicated with the drying chamber in the drying device 2, livestock wastewater can become tiny and separation difficulty after long-time hydrolysis, in order to fully realize the removal of solid matters in the livestock wastewater, a multi-stage solid-liquid separation system process is adopted, firstly, partial particles with larger density are removed, then, a coagulation-assisted flocculation reagent such as PAC, PAM and the like is added into filtrate, then, tiny suspended matters in the filtrate are removed, and when the tiny suspended matters are treated, the tiny suspended matters enter a subsequent sewage treatment process, and reach the standard after treatment and are discharged or recycled; the biogas is collected by the biogas purification system and then enters a combustion chamber of the drying device 2 for utilization, and sludge and filter residues generated by the multistage solid-liquid separation system can be dried by heat energy generated by combusting the biogas, so that the drying time of the sludge and the filter residues is reduced, the organic matters and nitrogen and phosphorus contents of the dried sludge are high, the water content is greatly reduced, and the sludge can be used as raw materials of organic fertilizers, can be used for composting to produce the organic fertilizers or can be used as raw materials of the organic fertilizers for sale; therefore, the system effectively separates solid from liquid of the biogas slurry, can well reduce the sludge content in the biogas slurry and simultaneously quickens the process of entering the follow-up treatment of the sludge.
The multistage solid-liquid separation system comprises a mud centrifugal dehydrator 3 and a plate-frame filter pressing device 4 which are sequentially communicated with the CSTR anaerobic tank 1, and mud outlets of the mud centrifugal dehydrator 3 and the plate-frame filter pressing device 4 are communicated with a drying chamber; wherein, the slurry centrifugal dehydrator 3 removes partial particles with larger density, the plate-and-frame filter press device 4 removes fine suspended matters, and the combination of the two sufficiently separates solid and liquid of the biogas slurry after anaerobic treatment; the liquid outlet of the plate-frame filter pressing device 4 is communicated with a lower-stage sludge treatment system, the system can adopt the prior art, and when the separated livestock and poultry wastewater reaches the standard through the lower-stage sludge treatment system, the livestock and poultry wastewater is discharged or recycled; the biogas purification system comprises a gas-water separator 5 and a desulfurizing device 6 which are sequentially communicated with the gas outlet of the CSTR anaerobic tank 1, and is used for dehydrating and desulfurizing biogas generated by livestock wastewater, so that the purity of the biogas is improved, the use of the biogas is facilitated, the gas outlet of the desulfurizing device 6 is communicated with a biogas storage bag 7, the purified biogas is stored, the gas outlet of the biogas storage bag 7 is communicated with a gas pressurizing device 9, the gas outlet end of the gas pressurizing device 9 is communicated with a combustion chamber, the supply of the biogas in the combustion chamber is realized by the design, and the stability of the gas supply is ensured by utilizing the gas pressurizing device 9; in addition, the gas outlet of the gas pressurizing device 9 is also communicated with a methane pipeline with a valve, and the methane pipeline is communicated with a civil methane pipeline 8, so that redundant methane is communicated into the domestic methane because the methane needed for drying the sludge is not needed to be much, and the methane generated by the livestock wastewater is fully utilized.
Principle of operation
Firstly, after the nutrient wastewater is introduced into a CSTR anaerobic tank 1 for long-time anaerobic treatment, the biogas generated after the anaerobic treatment is sequentially introduced into a gas-water separator 5 and a desulfurization device 6, the biogas enters a biogas storage bag 7 for storage, a solid-liquid mixture generated after the anaerobic treatment is sequentially introduced into a slurry centrifugal dehydrator 3 and a plate frame filter press device 4 for solid-liquid separation, the separated sludge is introduced into a drying chamber, the separated liquid is introduced into a lower-level sludge treatment system for secondary treatment, the separated liquid is discharged or recycled after reaching the standard treatment, and the sludge in the drying chamber is dried by using biogas combustion, so that the time for drying the sludge is reduced; therefore, the system effectively separates solid from liquid of the biogas slurry, can well reduce the sludge content in the biogas slurry and simultaneously quickens the process of entering the follow-up treatment of the sludge.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper," "lower," "left," "right," "front," "back," and the like are used herein for illustrative purposes only.
Claims (6)
1. The utility model provides a high-efficient solid-liquid separation system of natural pond liquid, includes CSTR anaerobic tank (1) of intercommunication beasts and birds waste water, its characterized in that: the system also comprises a biogas purification system and a multistage solid-liquid separation system which are respectively communicated with the CSTR anaerobic tank (1), wherein the air outlet end of the biogas purification system is communicated with a combustion chamber in the drying device (2), and the mud outlet pipe of the multistage solid-liquid separation system is communicated with the drying chamber in the drying device (2).
2. The biogas slurry efficient solid-liquid separation system according to claim 1, wherein: the multistage solid-liquid separation system comprises a slurry centrifugal dehydrator (3) and a plate-frame filter pressing device (4) which are sequentially communicated with the CSTR anaerobic tank (1), and a slurry outlet of the slurry centrifugal dehydrator (3) and the plate-frame filter pressing device (4) is communicated with the drying chamber.
3. The biogas slurry efficient solid-liquid separation system according to claim 2, wherein: and a liquid outlet of the plate-and-frame filter pressing device (4) is communicated with a lower-stage sludge treatment system.
4. The biogas slurry efficient solid-liquid separation system according to claim 1, wherein: the biogas purification system comprises a gas-water separator (5) and a desulfurization device (6) which are sequentially communicated with the gas outlet of the CSTR anaerobic tank (1).
5. The biogas slurry efficient solid-liquid separation system according to claim 4, wherein: the gas outlet of the desulfurization device (6) is communicated with a methane storage bag (7), the gas outlet of the methane storage bag (7) is communicated with a gas pressurizing device (9), and the gas outlet end of the gas pressurizing device (9) is communicated with the combustion chamber.
6. The biogas slurry efficient solid-liquid separation system according to claim 5, wherein: the gas outlet of the gas pressurizing device (9) is also communicated with a methane pipeline with a valve, and the methane pipeline is communicated with a civil methane pipeline (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322488462.XU CN221014924U (en) | 2023-09-13 | 2023-09-13 | Biogas slurry high-efficiency solid-liquid separation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322488462.XU CN221014924U (en) | 2023-09-13 | 2023-09-13 | Biogas slurry high-efficiency solid-liquid separation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221014924U true CN221014924U (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322488462.XU Active CN221014924U (en) | 2023-09-13 | 2023-09-13 | Biogas slurry high-efficiency solid-liquid separation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221014924U (en) |
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2023
- 2023-09-13 CN CN202322488462.XU patent/CN221014924U/en active Active
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