CN110651583A - Biogas slurry filtering and irrigating device - Google Patents
Biogas slurry filtering and irrigating device Download PDFInfo
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- CN110651583A CN110651583A CN201911109822.2A CN201911109822A CN110651583A CN 110651583 A CN110651583 A CN 110651583A CN 201911109822 A CN201911109822 A CN 201911109822A CN 110651583 A CN110651583 A CN 110651583A
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- 239000002002 slurry Substances 0.000 title claims abstract description 142
- 238000001914 filtration Methods 0.000 title claims abstract description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000003973 irrigation Methods 0.000 claims abstract description 83
- 230000002262 irrigation Effects 0.000 claims abstract description 83
- 238000005086 pumping Methods 0.000 claims abstract description 41
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 23
- 239000010865 sewage Substances 0.000 claims description 69
- 238000004062 sedimentation Methods 0.000 claims description 28
- 239000011435 rock Substances 0.000 claims description 26
- 239000006004 Quartz sand Substances 0.000 claims description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 12
- 239000010902 straw Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 239000003337 fertilizer Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 244000144972 livestock Species 0.000 description 3
- 244000144977 poultry Species 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002550 fecal effect Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003895 organic fertilizer Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052875 vesuvianite Inorganic materials 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
- A01C23/042—Adding fertiliser to watering systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to the technical field of biogas slurry treatment, in particular to a biogas slurry filtering and irrigating device, which comprises a biogas slurry pipeline, wherein one end of the biogas slurry pipeline is communicated with a biogas slurry pool, the other end of the biogas slurry pipeline is communicated with an irrigating pipeline, and a plurality of filtering devices are connected in series on the biogas slurry pipeline; one end of the clean water pipeline is communicated with the clean water tank, and the other end of the clean water pipeline is communicated with the irrigation pipeline after being converged with the tail end of the biogas slurry pipeline; the first pumping device is connected in series with the upstream of the biogas slurry pipeline; the second pumping device is connected in series with the upstream of the clean water pipeline; one end of the backflow pipeline is communicated with the tail end of the biogas slurry pipeline, and the other end of the backflow pipeline is communicated with the clean water pipeline; the connecting part of the backflow pipeline and the biogas slurry pipeline is positioned at the downstream of the filtering device, the connecting part of the backflow pipeline and the clean water pipeline is positioned at the downstream of the second pumping device, and the backflow pipeline is provided with a first valve. The biogas slurry filtering irrigation device provided by the invention has the advantages of simple structure, low cost and good filtering effect.
Description
Technical Field
The invention relates to the technical field of biogas slurry treatment, in particular to a biogas slurry filtering and irrigating device.
Background
With the large-scale development of domestic livestock and poultry breeding industry, the fecal sewage treatment of the livestock and poultry breeding farm becomes a concern for people, and the construction of large and medium-sized biogas projects provides a powerful solution for the fecal sewage treatment of the large-scale livestock and poultry breeding farm. The method takes the feces of the farm as the fermentation raw material to obtain the clean energy biogas, thereby improving the environment of the farm and reducing the pressure on the environment caused by the feces. But simultaneously, large and medium-sized biogas projects generate a large amount of anaerobic residue biogas slurry, and if the anaerobic residue biogas slurry is not fully and reasonably utilized, the biogas slurry can cause secondary pollution to the environment again, so that the development of large-scale aquaculture is restricted.
The existing main treatment mode of the biogas slurry mainly comprises two modes of direct artificial irrigation and artificial wetland digestion, the two modes easily cause secondary pollution, accurate irrigation technologies such as drip irrigation and the like and equipment are adopted for carrying out biogas slurry irrigation, and the method is an effective way and mode for recycling the biogas slurry. The biogas slurry contains a large amount of organic suspended matters and microorganisms, and algae, bacterial clusters and other substances are easy to propagate in the pipeline, so that the pipeline and an emitter are easy to block. At present, the existing domestic related filtering equipment can not meet the requirements of biogas slurry irrigation engineering, which causes the difficulty in large-area popularization of the biogas slurry irrigation engineering.
In order to solve the problem that biogas slurry irrigation equipment is easy to block, chinese patent publication No. CN102527147A discloses a graded filtering and water-gas combined backwashing device for biogas slurry irrigation, comprising: the sewage treatment system comprises four systems of a grading sewage blocking box, water inlet and liquid inlet, a laminated net type filter group and water-gas combined backwashing. The laminated filter and the screen filter are combined into the filter group to serve as a biogas slurry double-filtering device, so that the filtering efficiency can be improved, the reverse flushing can be conveniently implemented, the working efficiency of the device is improved by combining the water-gas combined flushing function, and the device is not easy to block.
However, the above technical solutions still have disadvantages in practical use, which are as follows: in the technical scheme, an air compression pump is independently arranged for cleaning the filtering device, and irrigation water in an air joint pipeline is used for reversely washing the filtering device, so that the defect that the structure of irrigation equipment is more complex and the use cost is higher due to the added air compression pump and matched pipelines thereof is overcome; meanwhile, when the pipeline is backwashed by air, the biogas slurry at the sewage discharge port is easy to splash due to the instability of the flow rate of the air in the pipeline, so that the surrounding environment is polluted.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that the structure becomes complicated and the use cost is increased when the biogas slurry filtering irrigation device in the prior art carries out back flushing, and further provide the biogas slurry filtering irrigation device which has a simpler structure and can carry out back flushing.
Therefore, the technical scheme provided by the invention is as follows:
a biogas slurry filtering irrigation device comprising:
one end of the biogas slurry pipeline is communicated with the biogas slurry pool, the other end of the biogas slurry pipeline is communicated with the irrigation pipeline, and a plurality of filtering devices are connected in series on the biogas slurry pipeline;
one end of the clean water pipeline is communicated with the clean water tank, and the other end of the clean water pipeline is communicated with the irrigation pipeline after being converged with the tail end of the biogas slurry pipeline;
the first pumping device is connected in series with the upstream of the biogas slurry pipeline and is suitable for pumping biogas slurry from the biogas slurry pool to the biogas slurry pipeline;
the second pumping device is connected in series with the upstream of the clean water pipeline and is suitable for pumping the clean water from the clean water tank to the clean water pipeline;
further comprising:
one end of the backflow pipeline is communicated with the tail end of the biogas slurry pipeline, and the other end of the backflow pipeline is communicated with the clean water pipeline; the connecting part of the backflow pipeline and the biogas slurry pipeline is positioned at the downstream of the filtering device, the connecting part of the backflow pipeline and the clean water pipeline is positioned at the downstream of the second pumping device, and the backflow pipeline is provided with a first valve.
As a preferred technical solution, the method further comprises:
the second valve is arranged at the tail end of the biogas slurry pipeline and is positioned at the downstream of the communication part of the biogas slurry pipeline and the backflow pipeline;
and the third valve is arranged at the tail end of the clean water pipeline and is positioned at the downstream of the communication part of the clean water pipeline and the backflow pipeline.
As a preferred technical solution, the method further comprises:
the blending tank is arranged at the junction of the clean water pipeline and the biogas slurry pipeline and communicated with the clean water pipeline, the biogas slurry pipeline and the irrigation pipeline.
As a preferred technical scheme, the mixing tank is provided with an injection port.
As a preferable technical scheme, the filtering device comprises a volcanic rock filter, a quartz sand filter, a net filter and a laminated filter which are sequentially connected in series from a biogas slurry pool to an irrigation pipeline.
As a preferred technical scheme, the first pumping device is arranged between the biogas slurry pool and the volcanic rock filter and is suitable for pumping the biogas slurry in the sedimentation tank into the biogas slurry pipeline.
As an optimal technical scheme, still be provided with the fourth valve between first pumping installations and the volcanic filter, be provided with first drain between volcanic filter and the fourth valve, be provided with the second drain between volcanic filter and the quartz sand filter, be provided with the third drain between quartz sand filter and the net filter, be provided with the fourth drain between net filter and the lamination formula filter, first drain, second drain, third drain, fourth drain all are provided with the blowdown valve.
As an alternative technical scheme, a fourth valve is further arranged between the first pumping device and the volcanic rock filter, and a first drain outlet is arranged between the volcanic rock filter and the fourth valve;
a second sewage draining outlet is formed between the volcanic rock filter and the net type filter, the second sewage draining outlet and the quartz sand filter are connected in parallel on the biogas pipeline, and a fifth valve and a sixth valve are respectively arranged at the upstream and the downstream of the second sewage draining outlet;
a third sewage draining outlet is arranged between the mesh filter and the laminated filter;
and the first sewage draining port, the second sewage draining port and the third sewage draining port are all provided with sewage draining valves.
As a preferred technical scheme, still include the sedimentation tank, the sedimentation tank sets up in natural pond liquid pond upstream, the sedimentation tank includes:
the sedimentation area is vertically arranged in the sedimentation tank;
the filtering area and the settling area are vertically arranged in the settling tank side by side;
the filtering and precipitating areas are communicated with the bottom.
As a preferred technical scheme, the filtering area comprises an upper section and a lower section, and the upper section filtering area is communicated with the lower section filtering area through a filter plate.
As a preferred technical scheme, the upper part of the upper filtering area is provided with a straw filtering layer.
As a preferred technical scheme, the irrigation pipeline is formed by connecting a plurality of irrigation branch pipes in parallel, valves are installed at the tail ends of the irrigation branch pipes, and a plurality of douches are arranged on each irrigation branch pipe.
The technical scheme provided by the invention has the following technical effects:
1. the irrigation device provided by the invention comprises: one end of the biogas slurry pipeline is communicated with the biogas slurry pool, the other end of the biogas slurry pipeline is communicated with the irrigation pipeline, and a plurality of filtering devices are connected in series on the biogas slurry pipeline; one end of the clean water pipeline is communicated with the clean water tank, and the other end of the clean water pipeline is communicated with the irrigation pipeline after being converged with the tail end of the biogas slurry pipeline; the first pumping device is connected in series with the upstream of the biogas slurry pipeline and is suitable for pumping biogas slurry from the biogas slurry pool to the biogas slurry pipeline; the second pumping device is connected in series with the upstream of the clean water pipeline and is suitable for pumping the clean water from the clean water tank to the clean water pipeline; one end of the backflow pipeline is communicated with the tail end of the biogas slurry pipeline, and the other end of the backflow pipeline is communicated with the clean water pipeline; the connecting part of the backflow pipeline and the biogas slurry pipeline is positioned at the downstream of the filtering device, the connecting part of the backflow pipeline and the clean water pipeline is positioned at the downstream of the second pumping device, and the backflow pipeline is provided with a first valve.
In the structure, the biogas slurry enters the farmland through the irrigation pipeline after being filtered by the biogas slurry pipeline and the plurality of filtering devices, and is mixed and diluted with clear water conveyed out from the clear water pipeline before entering the farmland. When the filter device needs to be cleaned, the first valve on the backflow pipeline is opened, clean water sequentially passes through the clean water pipeline and the backflow pipeline to enter the tail end of the biogas slurry pipeline, and then reversely passes through the filter device in the biogas slurry pipeline to clear the filter device. In the process, power elements such as an air compressor, a water pump and the like and redundant branches matched with the power elements are not required to be additionally arranged for cleaning the filtering device, and the filtering device can be cleaned only by adding one return pipeline, so that the complexity of the equipment is effectively reduced, and the construction cost of the equipment is reduced.
2. The irrigation device provided by the invention further comprises: the second valve is arranged at the tail end of the biogas slurry pipeline and is positioned at the downstream of the communication part of the biogas slurry pipeline and the backflow pipeline; and the third valve is arranged at the tail end of the clean water pipeline and is positioned at the downstream of the communication part of the clean water pipeline and the backflow pipeline.
In above-mentioned structure, when filter equipment was washd to needs, after closing second gate and third gate, can make in the whole conduction of pressure of second pumping installations to natural pond liquid pipeline, the clearance that is favorable to the jam after the washing pressure increase in the natural pond liquid pipeline.
3. The irrigation device provided by the invention further comprises a mixing tank which is arranged at the junction of the tail ends of the clear water pipeline and the biogas slurry pipeline and is communicated with the clear water pipeline, the biogas slurry pipeline and the irrigation pipeline. The existence of blending tank can make the mixed region of clear water and natural pond liquid increase, is favorable to better dilution natural pond liquid, is favorable to the crop to absorb the utilization more.
4. In the irrigation device provided by the invention, the mixing tank is provided with the injection port. The injection port can be used for injecting substances such as chemical fertilizers or cleaning agents into the mixing tank, so that integrated irrigation of biogas slurry, water and fertilizers is conveniently realized, and an irrigation pipeline is also conveniently cleaned.
5. In the irrigation device provided by the invention, the filtering device comprises a volcanic rock filter, a quartz sand filter, a net filter and a laminated filter which are sequentially connected in series from a biogas pool to an irrigation pipeline. The particles which can be filtered by the volcanic rock filter, the quartz sand filter, the net filter and the laminated filter are gradually reduced from big to small, and the biogas residues can be more effectively removed through the step-by-step filtering.
7. In the irrigation device provided by the invention, a fourth valve is further arranged between the first pumping device and the volcanic filter, a first sewage discharge port is arranged between the volcanic filter and the fourth valve, a second sewage discharge port is arranged between the volcanic filter and the quartz sand filter, a third sewage discharge port is arranged between the quartz sand filter and the mesh filter, a fourth sewage discharge port is arranged between the mesh filter and the laminated filter, and sewage discharge valves are arranged at the first sewage discharge port, the second sewage discharge port, the third sewage discharge port and the fourth sewage discharge port.
In the structure, after the fourth valve is closed, the sewage valve at the upstream of the corresponding filtering device is opened to realize independent cleaning of the filtering device, so that the cleaning effect of a single filtering device is promoted.
8. In the irrigation device provided by the invention, a fourth valve is also arranged between the first pumping device and the volcanic rock filter, and a first drain outlet is arranged between the volcanic rock filter and the fourth valve; a second sewage draining outlet is formed between the volcanic rock filter and the net type filter, the second sewage draining outlet and the quartz sand filter are connected in parallel on the biogas pipeline, and a fifth valve and a sixth valve are respectively arranged at the upstream and the downstream of the second sewage draining outlet; a third sewage draining outlet is arranged between the mesh filter and the laminated filter; and the first sewage draining port, the second sewage draining port and the third sewage draining port are all provided with sewage draining valves.
The structure is an alternative mode of a sewage draining outlet arrangement mode, the purpose of independently cleaning the filtering device can be realized, and the cleaning effect of a single filtering device is promoted.
9. The irrigation device provided by the invention also comprises a sedimentation tank, and the sedimentation tank comprises: the sedimentation area is vertically arranged in the sedimentation tank; the filtering area and the settling area are vertically arranged in the settling tank side by side; the filtration and precipitation zones are in communication. Compare in and set the sedimentation tank to the way that single pond only does the sediment, divide the sedimentation tank into sedimentation zone and filtering area after, can play the primary filter effect to natural pond liquid, reduce low reaches filter equipment's operating pressure, promote natural pond liquid filter effect.
11. In the irrigation device provided by the invention, the upstream part of the filtering area is provided with the straw filtering layer. The straw filter layer has the advantage of convenient for obtaining materials on the one hand, and on the other hand, the straw filter layer can be used as an organic fertilizer after being dried and fermented, thereby playing a multi-purpose effect.
In conclusion, the biogas slurry filtering irrigation device provided by the invention has the advantages of simple structure, low cost and good filtering effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of an irrigation device provided by the present invention;
FIG. 2 is a schematic structural view of an alternative embodiment of the irrigation device shown in FIG. 1;
FIG. 3 is a schematic plan view of a settling tank in an irrigation device according to the present invention;
description of reference numerals:
1. a biogas slurry pipeline; 2. a biogas slurry pool; 3. an irrigation pipeline; 4. a sedimentation tank; 5. a clear water pipeline; 6. a clean water tank; 7. a first pumping device; 8. a second pumping device; 9. a return line; 10. a first valve; 11. a second valve; 12. a third valve; 13. a mixing tank; 15. a volcanic rock filter; 16. a quartz sand filter; 17. a screen filter; 18. a laminated filter; 19. a fourth valve; 20. a first drain port; 21. a second sewage draining outlet; 22. a third sewage draining outlet; 23. a fourth sewage draining outlet; 25. a fifth valve; 26. a sixth valve; 27. a settling zone; 28. a filtration zone; 29. a straw filter layer; 30. and (4) irrigating branch pipes.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The concept to be explained in advance is that all the upstream and downstream mentioned in this embodiment are based on the flowing direction of the biogas slurry from the sedimentation tank 4 to the irrigation pipeline 3, the side close to the sedimentation tank 4 is the upstream, and the side close to the irrigation pipeline 3 is the downstream.
Referring to fig. 1, the present invention provides a specific embodiment, which is a biogas slurry filtering irrigation device, and is used for filtering biogas slurry and then irrigating. The present embodiment includes: one end of the biogas slurry pipeline 1 is communicated with the biogas slurry pool 2, the other end of the biogas slurry pipeline is communicated with the irrigation pipeline 3, and a plurality of filtering devices are connected in series on the biogas slurry pipeline 1; one end of the clear water pipeline 5 is communicated with the clear water tank 6, and the other end of the clear water pipeline 5 is communicated with the irrigation pipeline 3 after being converged with the tail end of the biogas slurry pipeline 1; the first pumping device 7 is connected in series with the upstream of the biogas slurry pipeline 1 and is suitable for pumping biogas slurry from the biogas slurry pool 2 to the biogas slurry pipeline 1; a second pumping device 8, connected in series upstream of the clean water line 5, adapted to pump clean water from the clean water tank 6 into the clean water line 5; one end of the backflow pipeline 9 is communicated with the tail end of the biogas slurry pipeline 1, and the other end of the backflow pipeline is communicated with the clear water pipeline 5; the communication position of the backflow pipeline 9 and the biogas slurry pipeline 1 is positioned at the downstream of the filtering device, the communication position of the backflow pipeline 9 and the clean water pipeline 5 is positioned at the downstream of the second pumping device 8, and the backflow pipeline 9 is provided with a first valve 10.
In the structure, the biogas slurry is filtered by the biogas slurry pipeline 1 and the plurality of filtering devices, then enters the farmland through the irrigation pipeline 3, and is mixed and diluted with clear water conveyed out from the clear water pipeline 5 before entering the farmland. When the filtering device needs to be cleaned, the first valve 10 on the backflow pipeline 9 is opened, clean water sequentially passes through the clean water pipeline 5 and the backflow pipeline 9 to enter the tail end of the biogas slurry pipeline 1, and then reversely passes through the filtering device in the biogas slurry pipeline 1, so that the filtering device is cleaned. In the process, power elements such as an air compressor, a water pump and the like and redundant branches matched with the power elements are not required to be additionally arranged for cleaning the filtering device, and the filtering device can be cleaned only by adding one return pipeline 9, so that the complexity of the equipment is effectively reduced, and the construction cost of the equipment is reduced.
In order to increase the water pressure when the second pumping device 8 reversely cleans, the device further comprises: the second valve 11 is arranged at the tail end of the biogas slurry pipeline 1 and is positioned at the downstream of the communication part of the biogas slurry pipeline 1 and the return pipeline 9; and a third valve 12 arranged at the tail end of the clean water pipeline 5 and positioned at the downstream of the communication part of the clean water pipeline 5 and the return pipeline 9. After the second valve 11 and the third valve 12 are closed, the water pressure applied to the backflow pipeline 9 by the second pumping device 8 can all reach the biogas slurry pipeline 1, the irrigation pipeline 3 cannot divide the water pressure of the clear water, and the water pressure during cleaning is guaranteed.
In order to provide a sufficient mixing area for clear water and biogas slurry, the device also comprises a mixing tank 13 which is arranged at the junction of the tail ends of the clear water pipeline 5 and the biogas slurry pipeline 1 and is communicated with the clear water pipeline 5, the biogas slurry pipeline 1 and the irrigation pipeline 3. And the mixing tank 13 is provided with an injection port. The injection port can be used for injecting substances such as chemical fertilizers or cleaning agents into the mixing tank 13, so that integrated irrigation of biogas slurry, water and fertilizers is conveniently realized, and the irrigation pipeline 3 is also conveniently cleaned.
The filtering device comprises a volcanic rock filter 15, a quartz sand filter 16, a net filter 17 and a laminated filter 18 which are sequentially connected in series from the biogas slurry pool 2 to the irrigation pipeline 3. The volcanic filter 15 and the quartz sand filter 16 are both tank-shaped, and both ends are respectively provided with a liquid inlet and a liquid outlet, and the interior of the tank-shaped volcanic filter and the interior of the tank-shaped quartz sand filter are respectively filled with volcanic and quartz sand. The mesh filter 17 and the laminated filter 18 have the same general commercial form. The first pumping device 7 is arranged between the biogas slurry pool 2 and the volcanic rock filter 15 and is suitable for pumping biogas slurry in the biogas slurry pool 2 to the biogas slurry pipeline 1. The filtering particles of the submerged volcanic rock filter 15, the quartz sand filter 16, the screen filter 17 and the laminated filter 18 are gradually reduced, and biogas residues can be more effectively removed through the step-by-step filtering.
A fourth valve 19 is further arranged between the first pumping device 7 and the volcanic rock filter 15, and the first pumping device 7 can not be impacted by reverse flow after the fourth valve 19 is closed.
As an embodiment of the arrangement of the sewage draining port, a fourth valve 19 is further arranged between the first pumping device 7 and the volcanic rock filter 15, and a first sewage draining port 20 is arranged between the volcanic rock filter 15 and the fourth valve 19; a second sewage draining port 21 is arranged between the volcanic rock filter 15 and the mesh filter 17, the second sewage draining port 21 and the quartz sand filter 16 are arranged on the biogas slurry pipeline 1 in parallel, and a fourth valve 19 and a fifth valve 25 are respectively arranged at the upstream and the downstream of the second sewage draining port 21; a third sewage draining outlet 22 is arranged between the mesh filter 17 and the laminated filter 18; and the first sewage draining port 20, the second sewage draining port 21 and the third sewage draining port 22 are all provided with sewage draining valves.
The structure is a preferable embodiment of a sewage draining outlet arrangement mode, and the aim of independently cleaning the filtering device can be fulfilled. Specifically, when the laminated filter 18 needs to be cleaned, the fourth valve 19, the fifth valve 25 and the sixth valve 26 are closed, the drain valve on the third drain outlet 22 is opened, and other drain valves are closed; when the mesh filter 17 needs to be cleaned, the fourth valve 19 and the fifth valve 25 are closed, the sewage discharge valve on the second sewage discharge port 21 and the sixth valve 26 are opened, and other sewage discharge valves are closed; when the quartz sand filter 16 needs to be cleaned, the fourth valve 19 and the sixth valve 26 are closed, the fifth valve 25 and the blowdown valves on the second blowdown port 21 are opened, and other blowdown valves are closed; when the volcanic rock filter 15 needs to be cleaned, the fourth valve 19 is closed, the fifth valve 25 and the sixth valve 26 are opened, the sewage valve on the first sewage discharge port 20 is opened, and other sewage valves are closed.
As an alternative embodiment of the above-mentioned drain outlet, referring to fig. 2, a first drain outlet 20 is disposed between the volcanic rock filter 15 and the fourth valve 19, a second drain outlet 21 is disposed between the volcanic rock filter 15 and the quartz sand filter 16, a third drain outlet 22 is disposed between the quartz sand filter 16 and the mesh filter 17, a fourth drain outlet 23 is disposed between the mesh filter 17 and the laminated filter 18, and after the fourth valve 19 is closed by disposing drain valves at the first drain outlet 20, the second drain outlet 21, the third drain outlet 22 and the fourth drain outlet 23, the drain valves at the upstream of the corresponding filtering devices are opened, so that the filtering devices can be cleaned individually, and the cleaning effect of a single filtering device is improved.
Referring to fig. 3, the present embodiment further includes a sedimentation tank 4, where the sedimentation tank 4 includes: the sedimentation zone 27 is vertically arranged in the sedimentation tank 4; the filtering area 28 and the settling area 27 are vertically arranged in the settling tank 4 side by side; the filtration zone 28 and the settling zone 27 are in communication. The filtering area 28 comprises an upper section and a lower section, and the upper section filtering area 28 and the lower section filtering area 28 are communicated through a filtering plate. A straw filter layer 29 is arranged at the upstream of the upper-section filtering area 28. Compare in setting sedimentation tank 4 to the way that single pond only does the sediment, divide sedimentation tank 4 into behind sedimentation zone 27 and the filtering area 28, can play the prefiltration effect to natural pond liquid, reduce low reaches filter equipment's operating pressure, promote natural pond liquid filter effect. The straw filtering layer 29 has the advantage of convenient material acquisition on the one hand, and on the other hand, the straw filtering layer 29 can also be used as an organic fertilizer after being dried and fermented, thereby playing a multi-purpose effect.
The action process of the irrigation device is as follows:
when irrigation is needed, the second valve 11, the third valve 12 and the fourth valve 19 are opened, and the rest valves, the drain valves and the valves at the tail parts of the irrigation branch pipes 30 are all closed; the biogas slurry enters the biogas slurry tank 2 from the sedimentation tank 4, passes through a biogas slurry pipeline 1, sequentially passes through a vesuvianite filter, a quartz sand filter 16, a net filter 17 and a laminated filter 18, passes through a second valve 11, and then enters a mixing tank 13; clean water in the clean water tank 6 passes through the screen filter 17 and the laminated filter 18 in sequence by using the clean water pipeline 5, and then enters the mixing tank 13 through the third valve 12; after being filtered in the mixing tank 13, the biogas slurry is mixed with clear water and fertilizer and then enters the irrigation pipeline 3, and liquid is discharged through the irrigators on the irrigation branch pipes 30.
When the irrigation pipeline 3 is cleaned, the second valve 11 and the first valve 10 are closed, the third valve 12 and the valves at the tail parts of the irrigation branch pipes 30 are opened, water in the clean water tank 6 is pumped by the water pump to enter the clean water pipeline 5, enters the mixing tank 13 through the mesh filter 17, the laminated filter 18 and the third valve 12 to be mixed with cleaning agents, then enters the irrigation pipeline 3 to be cleaned, and is discharged through the valves at the tail parts of the irrigation branch pipes 30.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (12)
1. A biogas slurry filtering irrigation device comprising:
one end of the biogas slurry pipeline is communicated with the biogas slurry pool, the other end of the biogas slurry pipeline is communicated with the irrigation pipeline, and a plurality of filtering devices are connected in series on the biogas slurry pipeline;
one end of the clean water pipeline is communicated with the clean water tank, and the other end of the clean water pipeline is communicated with the irrigation pipeline after being converged with the tail end of the biogas slurry pipeline;
the first pumping device is connected in series with the upstream of the biogas slurry pipeline and is suitable for pumping biogas slurry from the biogas slurry pool to the biogas slurry pipeline;
the second pumping device is connected in series with the upstream of the clean water pipeline and is suitable for pumping the clean water from the clean water tank to the clean water pipeline;
it is characterized by also comprising:
one end of the backflow pipeline is communicated with the tail end of the biogas slurry pipeline, and the other end of the backflow pipeline is communicated with the clean water pipeline; the connecting part of the backflow pipeline and the biogas slurry pipeline is positioned at the downstream of the filtering device, the connecting part of the backflow pipeline and the clean water pipeline is positioned at the downstream of the second pumping device, and the backflow pipeline is provided with a first valve.
2. The biogas slurry filtering irrigation device according to claim 1, further comprising:
the second valve is arranged at the tail end of the biogas slurry pipeline and is positioned at the downstream of the communication part of the biogas slurry pipeline and the backflow pipeline;
and the third valve is arranged at the tail end of the clean water pipeline and is positioned at the downstream of the communication part of the clean water pipeline and the backflow pipeline.
3. The biogas slurry filtering irrigation device according to claim 1, further comprising:
the blending tank is arranged at the junction of the clean water pipeline and the biogas slurry pipeline and communicated with the clean water pipeline, the biogas slurry pipeline and the irrigation pipeline.
4. The biogas slurry filtering irrigation device as claimed in claim 3, wherein the mixing tank is provided with an injection port.
5. The biogas slurry filtering irrigation device according to claim 1, wherein the filtering device comprises a volcanic rock filter, a quartz sand filter, a mesh filter and a laminated filter which are connected in series from a biogas slurry pool to an irrigation pipeline.
6. The biogas slurry filtering irrigation device as claimed in claim 5, wherein the first pumping device is arranged between the biogas slurry tank and the volcanic rock filter and is adapted to pump biogas slurry in the biogas slurry tank into the biogas slurry pipeline.
7. The biogas slurry filtering irrigation device according to claim 6, wherein a fourth valve is further arranged between the first pumping device and the volcanic filter, a first sewage discharge port is arranged between the volcanic filter and the fourth valve, a second sewage discharge port is arranged between the volcanic filter and the quartz sand filter, a third sewage discharge port is arranged between the quartz sand filter and the mesh filter, a fourth sewage discharge port is arranged between the mesh filter and the laminated filter, and sewage discharge valves are arranged at the first sewage discharge port, the second sewage discharge port, the third sewage discharge port and the fourth sewage discharge port.
8. The biogas slurry filtering irrigation device according to claim 6, wherein a fourth valve is arranged between the first pumping device and the volcanic rock filter, and a first drain outlet is arranged between the volcanic rock filter and the fourth valve;
a second sewage draining outlet is formed between the volcanic rock filter and the net type filter, the second sewage draining outlet and the quartz sand filter are connected in parallel on the biogas pipeline, and a fifth valve and a sixth valve are respectively arranged at the upstream and the downstream of the second sewage draining outlet;
a third sewage draining outlet is arranged between the mesh filter and the laminated filter;
and the first sewage draining port, the second sewage draining port and the third sewage draining port are all provided with sewage draining valves.
9. The biogas slurry filtering irrigation device according to claim 5, further comprising a sedimentation tank disposed upstream of the biogas slurry tank, the sedimentation tank comprising:
the sedimentation area is vertically arranged in the sedimentation tank;
the filtering area and the settling area are vertically arranged in the settling tank side by side;
the filtering area is communicated with the settling area.
10. The biogas slurry filtering irrigation device as claimed in claim 9, wherein the filtering area comprises an upper filtering area and a lower filtering area, and the upper filtering area and the lower filtering area are communicated through a filter plate.
11. The biogas slurry filtering irrigation device as recited in claim 10, wherein a straw filtering layer is disposed upstream of the upper filtering area.
12. The biogas slurry filtering irrigation device according to any one of claims 1 to 11, wherein the irrigation pipeline is composed of a plurality of irrigation branch pipes connected in parallel, valves are installed at the tail ends of the irrigation branch pipes, and each irrigation branch pipe is provided with a plurality of emitters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911109822.2A CN110651583A (en) | 2019-11-13 | 2019-11-13 | Biogas slurry filtering and irrigating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911109822.2A CN110651583A (en) | 2019-11-13 | 2019-11-13 | Biogas slurry filtering and irrigating device |
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| CN110651583A true CN110651583A (en) | 2020-01-07 |
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| CN201911109822.2A Pending CN110651583A (en) | 2019-11-13 | 2019-11-13 | Biogas slurry filtering and irrigating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114009194A (en) * | 2021-11-30 | 2022-02-08 | 中国农业科学院农业资源与农业区划研究所 | Biogas slurry irrigation pretreatment and farmland irrigation system |
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