CN113880359A - Sewage treatment system for micro-power biological ecological purification - Google Patents
Sewage treatment system for micro-power biological ecological purification Download PDFInfo
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- CN113880359A CN113880359A CN202111219976.4A CN202111219976A CN113880359A CN 113880359 A CN113880359 A CN 113880359A CN 202111219976 A CN202111219976 A CN 202111219976A CN 113880359 A CN113880359 A CN 113880359A
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- 239000010865 sewage Substances 0.000 title claims abstract description 62
- 238000000746 purification Methods 0.000 title claims abstract description 17
- 230000029087 digestion Effects 0.000 claims abstract description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000000758 substrate Substances 0.000 claims abstract description 44
- 238000001179 sorption measurement Methods 0.000 claims abstract description 40
- 230000001360 synchronised effect Effects 0.000 claims abstract description 39
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 22
- 239000010457 zeolite Substances 0.000 claims abstract description 22
- 230000008595 infiltration Effects 0.000 claims abstract description 20
- 238000001764 infiltration Methods 0.000 claims abstract description 20
- 239000010802 sludge Substances 0.000 claims description 31
- 239000011159 matrix material Substances 0.000 claims description 23
- 238000005325 percolation Methods 0.000 claims description 21
- 238000003795 desorption Methods 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 20
- 239000000945 filler Substances 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 10
- 239000011574 phosphorus Substances 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 7
- 239000003814 drug Substances 0.000 abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 238000005273 aeration Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract 1
- 244000005700 microbiome Species 0.000 description 16
- 230000000694 effects Effects 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 238000012856 packing Methods 0.000 description 7
- 241000894006 Bacteria Species 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000001506 calcium phosphate Substances 0.000 description 4
- 229910000389 calcium phosphate Inorganic materials 0.000 description 4
- 235000011010 calcium phosphates Nutrition 0.000 description 4
- 229910000398 iron phosphate Inorganic materials 0.000 description 4
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 239000010954 inorganic particle Substances 0.000 description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical group [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 241001148470 aerobic bacillus Species 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 125000001477 organic nitrogen group Chemical group 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241000108664 Nitrobacteria Species 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention discloses a micro-power biological ecological purification sewage treatment system which comprises a vertical flow grit chamber, a transverse intercepting anaerobic digestion device and a high-load ammonia nitrogen synchronous adsorption and analysis ecological infiltration bed which are sequentially communicated, wherein a basalt substrate layer, an improved zeolite substrate layer and a ceramsite substrate layer are sequentially arranged in the high-load ammonia nitrogen synchronous adsorption and analysis ecological infiltration bed from bottom to top, aquatic plants are planted on the upper part of the ceramsite substrate layer, and sewage is discharged from a water outlet of the high-load ammonia nitrogen synchronous adsorption and analysis ecological infiltration bed after sequentially passing through the basalt substrate layer, the improved zeolite substrate layer and the ceramsite substrate layer. The invention integrates the four synergistic effects of physical, chemical, biological and ecological treatment methods, and realizes the removal rate of COD in the sewage of 90 percent, SS (suspended solid) of 90 percent, phosphorus and nitrogen of more than 90 percent and stable effluent index of reaching the first-grade B standard on the premise of no medicament consumption, no aerobic section aeration and low energy consumption and power consumption.
Description
Technical Field
The invention relates to the technical field of biological and ecological sewage treatment, in particular to a sewage treatment system for micro-power biological and ecological purification.
Background
The main water quality indexes in the water environment treatment are Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), ammonia nitrogen (NH3-N), Total Nitrogen (TN), Total Phosphorus (TP) and the like. In the sewage treatment process, a medicament method is usually adopted for Total Phosphorus (TP), and a medicament is added in the sewage treatment process, so that the Total Phosphorus (TP) is gathered into suspended matters to be adsorbed on activated sludge, and the total phosphorus is removed through sludge discharge; and the ammonia nitrogen (NH3-N) and the Total Nitrogen (TN) are removed through nitrification and denitrification.
At present, sewage is treated by adopting an A/O and artificial wetland mode, but the method is only suitable for treating sewage with large population density and large pollution discharge in the center of villages and towns, the operation cost is high, and the sludge required by the medicament treatment method is increased greatly; the dephosphorization and denitrification effect is unstable, and fluctuation is easy to occur; meanwhile, the flow path of sewage in the denitrification treatment of the wetland is not comprehensive enough, and the applicability is not enough; the treated sewage can not be discharged uniformly effectively, and the functionality is insufficient.
The above disadvantages need to be improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a sewage treatment system for micro-power biological ecological purification.
The technical scheme of the invention is as follows:
the invention provides a sewage treatment system for micro-power biological ecological purification, which comprises a vertical flow grit chamber, a transverse interception anaerobic digestion device and a high-load ammonia nitrogen synchronous adsorption and desorption ecological infiltration bed which are sequentially communicated,
the ecological percolation bed is characterized in that a basalt substrate layer, an improved zeolite substrate layer and a ceramsite substrate layer are sequentially arranged inside the ecological percolation bed with the high-load ammonia nitrogen synchronous adsorption and analysis from bottom to top, aquatic plants are planted on the upper portion of the ceramsite substrate layer, and sewage sequentially passes through the basalt substrate layer, the improved zeolite substrate layer and the ceramsite substrate layer and then is discharged from a water outlet of the ecological percolation bed with the high-load ammonia nitrogen synchronous adsorption and analysis.
According to the invention of the scheme, a central cylinder support is arranged on the wall of the vertical flow grit chamber, a central cylinder is arranged in the middle of the interior of the vertical flow grit chamber, the central cylinder is fixedly connected with the central cylinder support, a water inlet is arranged at the left end of the vertical flow grit chamber, the water inlet of the vertical flow grit chamber is communicated with the central cylinder, a water outlet is arranged at the right end of the vertical flow grit chamber, the water outlet of the vertical flow grit chamber is communicated with the water inlet of the transverse intercepting anaerobic digestion device, and a sludge discharge port is arranged at the bottom of the vertical flow grit chamber.
Further, the inside both sides in bottom of the pool of vertical flow grit chamber all are provided with the slope baffle, two be flat bottom in the middle of the bottom of slope baffle, the mud discharging opening sets up on the flat bottom.
According to the invention of the scheme, the water outlet of the vertical flow grit chamber is provided with the adjustable triangular weir plate, and the top of the vertical flow grit chamber is provided with the manhole.
According to the invention of the scheme, the transverse intercepting anaerobic digestion device comprises a primary transverse intercepting anaerobic digestion tank and a secondary transverse intercepting anaerobic digestion tank, wherein the vertical flow grit chamber, the primary transverse intercepting anaerobic digestion tank, the secondary transverse intercepting anaerobic digestion tank and the high-load ammonia nitrogen synchronous adsorption and analysis ecological percolation bed are communicated in sequence.
Furthermore, a water inlet is formed in the upper end of the left side of the primary transverse interception anaerobic digestion tank, a water outlet of the vertical flow grit chamber is communicated with the primary transverse interception anaerobic digestion tank through a primary perforated pipe, and the primary perforated pipe penetrates through the water inlet of the primary transverse interception anaerobic digestion tank and extends to the lower end of the interior of the primary transverse interception anaerobic digestion tank;
a water outlet is formed in the upper end of the right side of the first-stage transverse intercepting anaerobic digestion tank, a water inlet is formed in the upper end of the left side of the second-stage transverse intercepting anaerobic digestion tank, the water outlet of the first-stage transverse intercepting anaerobic digestion tank is communicated with the second-stage transverse intercepting anaerobic digestion tank through a second-stage perforated pipe, and the second-stage perforated pipe penetrates through the water inlet of the second-stage transverse intercepting anaerobic digestion tank and extends to the lower end of the inner part of the second-stage transverse intercepting anaerobic digestion tank;
and the top of the right side of the second-stage transverse intercepting anaerobic digestion tank is provided with a water outlet, and the water outlet of the second-stage transverse intercepting anaerobic digestion tank is communicated with the high-load ammonia nitrogen synchronous adsorption and analysis ecological infiltration bed through an overflowing filter plate.
Furthermore, a plurality of intensive elastic fillers which are transversely arranged from left to right through center lines are arranged at the middle ends of the interiors of the first-stage transverse intercepting anaerobic digestion tank and the second-stage transverse intercepting anaerobic digestion tank in a staggered mode, and anaerobic activated sludge particles are arranged at the lower ends of the interiors of the first-stage transverse intercepting anaerobic digestion tank and the second-stage transverse intercepting anaerobic digestion tank.
Furthermore, a water collecting pipe is arranged on the left side inside the ceramsite matrix layer and is communicated with a water outlet of the high-load ammonia nitrogen synchronous adsorption and desorption ecological infiltration bed.
Furthermore, the analytic ecological percolation bed of synchronous absorption of high load ammonia nitrogen is located the one-level transversely dams the anaerobic digestion pond with the top of the anaerobic digestion pond that transversely dams of second grade, be provided with first ventilation cap in the middle of the top of the anaerobic digestion pond that transversely dams of one-level, be provided with the second ventilation cap in the middle of the top of the anaerobic digestion pond that transversely dams of second grade, first ventilation cap with the second ventilation cap all passes the analytic ecological percolation bed of synchronous absorption of high load ammonia nitrogen.
Furthermore, the solubility of anaerobic activated sludge particles in the first-stage transverse intercepting anaerobic digestion tank is 25g/L, and the solubility of anaerobic activated sludge particles in the second-stage transverse intercepting anaerobic digestion tank is 15 g/L.
According to the invention of the scheme, the thickness of the basalt substrate layer is 30cm, and the particle size of the basalt substrate layer is 16-32 mm; the thickness of the improved zeolite matrix layer is 30cm, and the particle size of the improved zeolite matrix layer is 8-16 mm; the thickness of the ceramsite matrix layer is 44cm, and the particle size of the ceramsite matrix layer is 5-10 mm.
According to the invention of the scheme, the beneficial effects of the invention are as follows:
1. the invention integrates the four synergistic effects of physical, chemical, biological and ecological treatment methods, and realizes the premise of no medicament consumption, no aerobic section aeration and low energy consumption and power consumption, the removal rate of COD in the sewage reaches 90 percent, the removal rate of SS reaches 90 percent, the removal rate of phosphorus and nitrogen reaches more than 90 percent, and the effluent index stably reaches the first-grade B standard;
2. the intensive elastic filler in the transverse interception anaerobic digestion tank is transversely arranged in a cross mode, so that the effect of intercepting anaerobic activated sludge particles is achieved, excessive sludge loss is prevented, the concentration of the anaerobic activated sludge in the transverse interception anaerobic digestion tank is ensured to be continuously kept at a high concentration level, and the effect of facilitating full contact reaction of sewage and sludge is achieved; meanwhile, the dense elastic filler can be uniformly stretched in a three-dimensional and all-dimensional manner and has a large specific surface area, so that anaerobic microorganisms are attached to the surface of the dense elastic filler to grow, a biological film is rapidly formed on the surface of the dense elastic filler, and the effect of facilitating film hanging is achieved;
3. the method is characterized in that improved zeolite is selected in a matrix layer of the ecological percolation bed for high-load ammonia nitrogen synchronous adsorption and desorption, and the improved zeolite is synchronously desorbed to improve the removal rate of ammonia nitrogen and total phosphorus and realize the regeneration of the matrix by utilizing the excellent molecular sieve structure and the characteristics of larger polarity, higher unsaturation degree and stronger adsorption capacity when denitrifying bacteria perform denitrification;
4. the invention has the advantages of integral greening design, low operation cost, simple management and good landscape effect, and plays a role in beautifying the environment by utilizing natural resources to purify.
Drawings
FIG. 1 is a top view of the present invention;
fig. 2 is a cross-sectional view of a portion a-a in fig. 1.
In the context of the figures, it is,
1. a vertical flow grit chamber; 2. a first-stage transverse intercepting anaerobic digestion tank; 3. a second-stage transverse intercepting anaerobic digestion tank; 4. synchronously adsorbing and resolving the ecological percolation bed with high-load ammonia nitrogen; 5. a central cartridge support; 6. a central barrel; 7. a water inlet; 8. a sludge discharge port; 9. a primary perforated pipe; 10. a secondary perforated pipe; 11. a flow-through filter plate; 12. dense elastic filler; 13. a basalt substrate layer; 14. an improved zeolite matrix layer; 15. a ceramsite matrix layer; 16. an aquatic plant; 17. a water outlet; 18. inclining the partition plate; 19. a triangular weir plate; 20. a manhole; 21. a first vent cap; 22. a second venting cap; 23. a water collecting pipe.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The terms "upper", "lower", "left", "right", "top", "bottom", "inner", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are only for convenience of description and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
Referring to fig. 1 and 2, the present embodiment provides a sewage treatment system for micro-power biological ecological purification, which includes a vertical flow grit chamber 1, a horizontal interception anaerobic digestion device, and a high-load ammonia nitrogen synchronous adsorption and desorption ecological infiltration bed 4, which are sequentially connected.
The wall of the vertical flow grit chamber 1 is provided with a central cylinder support 5, the middle inside the vertical flow grit chamber 1 is provided with a central cylinder 6, the central cylinder 6 is fixedly connected with the central cylinder support 5, the left end of the vertical flow grit chamber 1 is provided with a water inlet 7, the water inlet 7 of the vertical flow grit chamber 1 is communicated with the central cylinder 6, and the central cylinder 6 can ensure that sewage is uniformly distributed in the vertical flow grit chamber 1; the right-hand member of vertical flow grit chamber 1 is provided with the delivery port, and the delivery port of vertical flow grit chamber 1 and the water inlet intercommunication of the anaerobic digestion device that transversely dams, the bottom of the pool of vertical flow grit chamber 1 are provided with mud discharging port 8, and mud discharging port 8 is used for discharging because of the gravity deposit in the bottom of the pool particle diameter be greater than 0.2mm and the great inorganic particle of density in the sewage.
The transverse intercepting anaerobic digestion device comprises a first-stage transverse intercepting anaerobic digestion tank 2 and a second-stage transverse intercepting anaerobic digestion tank, wherein a vertical flow grit chamber 1, the first-stage transverse intercepting anaerobic digestion tank 2, a second-stage transverse intercepting anaerobic digestion tank 3 and a high-load ammonia nitrogen synchronous adsorption and analysis ecological infiltration bed 4 are communicated in sequence, and the high-load ammonia nitrogen synchronous adsorption and analysis ecological infiltration bed 4 is positioned above the first-stage transverse intercepting anaerobic digestion tank 2 and the second-stage transverse intercepting anaerobic digestion tank 3.
The upper end of the left side of the first-stage transverse interception anaerobic digestion tank 2 is provided with a water inlet, the water outlet of the vertical flow grit chamber 1 is communicated with the first-stage transverse interception anaerobic digestion tank 2 through a first-stage perforated pipe 9, and the first-stage perforated pipe 9 penetrates through the water inlet of the first-stage transverse interception anaerobic digestion tank 2 and extends to the lower end of the inside of the first-stage transverse interception anaerobic digestion tank 2; a water outlet is formed in the upper end of the right side of the first-stage transverse intercepting anaerobic digestion tank 2, a water inlet is formed in the upper end of the left side of the second-stage transverse intercepting anaerobic digestion tank 3, the water outlet of the first-stage transverse intercepting anaerobic digestion tank 2 is communicated with the second-stage transverse intercepting anaerobic digestion tank 3 through a second-stage perforated pipe 10, and the second-stage perforated pipe 10 penetrates through the water inlet of the second-stage transverse intercepting anaerobic digestion tank 3 and extends to the lower end of the inner part of the second-stage transverse intercepting anaerobic digestion tank 3; the right side top of the second-stage transverse intercepting anaerobic digestion tank 3 is provided with a water outlet, and the water outlet of the second-stage transverse intercepting anaerobic digestion tank 3 is communicated with the high-load ammonia nitrogen synchronous adsorption and analysis ecological infiltration bed 4 through an overflowing filter plate 11.
The inside middle ends of the first-stage transverse intercepting anaerobic digestion tank 2 and the second-stage transverse intercepting anaerobic digestion tank 3 are respectively provided with a plurality of intensive elastic fillers 12 which are transversely arranged from left to right through center lines, the intensive elastic fillers 12 are arranged in a staggered mode in a crossed mode, and anaerobic activated sludge particles are arranged at the lower ends of the inside of the first-stage transverse intercepting anaerobic digestion tank 2 and the inside of the second-stage transverse intercepting anaerobic digestion tank 3. In the first-stage transverse intercepting anaerobic digestion tank 2, sewage enters the lower end of the tank from the first-stage perforated pipe 9, and enters the second-stage transverse intercepting anaerobic digestion tank 3 through the intensive elastic packing 12. In the second-stage transverse intercepting anaerobic digestion tank 3, sewage enters the lower end of the tank from the second-stage perforated pipe 10, and enters the high-load ammonia nitrogen synchronous adsorption and desorption ecological percolation bed 4 through the intensive elastic packing 12. The intensive elastic fillers 12 are transversely arranged in a cross manner, so that the anaerobic active sludge particles are intercepted, excessive sludge loss is prevented, the anaerobic active sludge concentration in the transverse intercepting anaerobic digestion tank is ensured to continuously maintain a high concentration level, the effect of facilitating the full contact reaction of sewage and sludge is achieved, and the organic matter degradation efficiency is greatly improved; meanwhile, as the dense elastic filler 12 can be uniformly stretched in a three-dimensional and all-dimensional manner and has a large specific surface area, anaerobic microorganisms are attached to the surface of the dense elastic filler 12 to grow, and a biological film is rapidly formed on the surface of the dense elastic filler 12, so that the effect of facilitating film hanging is achieved.
The ecological percolation bed 4 for synchronous adsorption and desorption of high-load ammonia nitrogen comprises a basalt substrate layer 13, an improved zeolite substrate layer 14 and a ceramsite substrate layer 15 which are sequentially arranged from bottom to top inside, and aquatic plants 16 are planted on the upper portion of the ceramsite substrate layer 15. The ecological percolation bed 4 for loading ammonia nitrogen and synchronously adsorbing and resolving transmits oxygen to the root system of the aquatic plant 16 through the transportation of the aeration tissue of the aquatic plant 16. The root part of the aquatic plant 16 presents aerobic, anaerobic and anoxic microorganism environment, which is beneficial to the propagation of aerobic microorganism, anaerobic microorganism and anoxic microorganism, greatly improves the contact area of sewage and microorganism, and utilizes the characteristic of regional coexistence of a large amount of aerobic bacteria, nitrobacteria, nitrosobacteria, denitrifying bacteria and other advantageous microorganisms in the tank to remove organic nitrogen by shortcut nitrification-denitrification, while inorganic nitrogen is absorbed by the aquatic plant 16. The improved zeolite is selected as the middle layer of the matrix layer, and the improved zeolite is synchronously analyzed to achieve stable ammonia nitrogen yielding water by utilizing the excellent molecular sieve structure and the characteristics of larger polarity, higher degree of unsaturation and stronger adsorption capacity when denitrifying bacteria perform denitrification; the ecological percolation bed 4 for synchronous adsorption and desorption of high-load ammonia nitrogen contains more iron, aluminum, calcium oxide and other substances through a multi-layer matrix layer, and is beneficial to generating iron phosphate, aluminum phosphate and calcium phosphate with low solubility so that the iron phosphate, the aluminum phosphate and the calcium phosphate are easily separated from sewage, thereby achieving the best effect of phosphorus removal. In the high-load ammonia nitrogen synchronous adsorption and desorption ecological infiltration bed 4, sewage passes through the basalt substrate layer 13, the improved zeolite substrate layer 14 and the ceramsite substrate layer 15 in sequence and is discharged from a water outlet 17 of the high-load ammonia nitrogen synchronous adsorption and desorption ecological infiltration bed 4.
Referring to fig. 2, in a preferred embodiment, inclined partition plates 18 are arranged on two sides of the inner part of the bottom of the vertical flow grit chamber 1, the bottoms of the two inclined partition plates 18 are flat bottoms, and a sludge discharge port 8 is arranged on the flat bottoms. The inclined clapboard 18 can concentrate and precipitate inorganic particles with the particle diameter larger than 0.2mm and the density larger in the sewage on the flat bottom part, so that the sludge discharge port 8 is convenient to discharge.
Referring to fig. 2, in a preferred embodiment, the outlet of the vertical flow grit chamber 1 is provided with an adjustable triangular weir plate 19, and the flow of sewage into the first-stage transverse intercepting anaerobic digester 2 is conveniently controlled by the adjustable triangular weir plate 19. Meanwhile, a manhole 20 is provided at the top of the vertical flow grit chamber 1, so that personnel can conveniently go in and out of the vertical flow grit chamber 1 for installation, maintenance and safety inspection.
Referring to fig. 1 and 2, in a preferred embodiment, a first vent cap 21 is disposed in the middle of the top of the first-stage transverse intercepting anaerobic digester 2, a second vent cap 22 is disposed in the middle of the top of the second-stage transverse intercepting anaerobic digester 3, and both the first vent cap 21 and the second vent cap 22 pass through the high-load ammonia nitrogen synchronous adsorption and desorption ecological percolation bed 4. The first venting cap 21 is used for discharging the excess air in the primary transverse intercepting anaerobic digester 2, and the second venting cap 22 is used for discharging the excess air in the secondary transverse intercepting anaerobic digester 3.
In a preferred embodiment, the solubility of anaerobic activated sludge particles in the primary transverse interception anaerobic digestion tank 2 is 25g/L, so that the COD and BOD removal rate of sewage in the primary transverse interception anaerobic digestion tank 2 can reach 80%; the solubility of anaerobic activated sludge particles in the secondary transverse interception anaerobic digestion tank 3 is 15g/L, so that the COD (chemical oxygen demand) and BOD (biochemical oxygen demand) removal rate of the sewage in the secondary transverse interception anaerobic digestion tank 3 can reach 60%.
Referring to fig. 2, in a preferred embodiment, a water collecting pipe 23 is disposed at the left side inside the ceramsite matrix layer 15, and the water collecting pipe 23 is communicated with a water outlet of the high-load ammonia nitrogen synchronous adsorption and desorption ecological infiltration bed 4. In the high-load ammonia nitrogen synchronous adsorption and desorption ecological percolation bed 4, sewage is treated by the basalt substrate layer 13, the improved zeolite substrate layer 14 and the ceramsite substrate layer 15 in sequence and then collected by the collecting pipe, and then is discharged from a water outlet 17 of the high-load ammonia nitrogen synchronous adsorption and desorption ecological percolation bed 4.
In a preferred embodiment, the thickness of the basalt substrate layer 13 is 30cm, and the grain size of the basalt substrate layer 13 is 16-32 mm; the thickness of the modified zeolite matrix layer 14 is 30cm, and the particle size of the modified zeolite matrix layer 14 is 8-16 mm; the thickness of the ceramsite matrix layer 15 is 44cm, and the particle size of the ceramsite matrix layer 15 is 5-10 mm. The ecological percolation bed 4 for high-load ammonia nitrogen synchronous adsorption and analysis can effectively improve the removal rate of total phosphorus, total nitrogen and ammonia nitrogen through the basalt substrate layer 13, the improved zeolite substrate layer 14 and the ceramsite substrate layer 15.
Referring to fig. 1 and 2, in a preferred embodiment, a sludge discharge port 8 is formed at the bottom of the first-stage transverse intercepting anaerobic digestion tank 2, and sludge deposited at the bottom of the first-stage transverse intercepting anaerobic digestion tank 2 is discharged through the sludge discharge port 8; the bottom of the second-stage transverse intercepting anaerobic digestion tank 3 is provided with a sludge discharge port 8, and sludge precipitated at the bottom of the second-stage transverse intercepting anaerobic digestion tank 3 is discharged through the sludge discharge port 8.
The implementation method of the sewage treatment system for micro-power biological ecological purification comprises the following steps:
step S1: sewage enters a central cylinder 6 inside the vertical flow grit chamber 1 through a water inlet 7 of the vertical flow grit chamber 1, and the central cylinder 6 enables the sewage to be uniformly distributed in the vertical flow grit chamber 1; inorganic particles with the particle size of more than 0.2mm and larger density in the sewage are precipitated at the bottom of the vertical flow grit chamber 1 due to gravity and are discharged through a sludge discharge port 8 at the bottom of the vertical flow grit chamber; sewage enters the first-stage transverse interception anaerobic digestion tank 2 through an adjustable triangular weir plate 19 connected with the water outlet of the vertical flow grit chamber 1.
Step S2: the sewage flowing through the vertical flow grit chamber 1 automatically flows into the lower end of the inner part of the first-stage transverse intercepting anaerobic digestion tank 2 through the first-stage perforated pipe 9, and when the sewage flows through the dense elastic packing 12 at the middle end of the inner part of the first-stage transverse intercepting anaerobic digestion tank 2, the sewage is digested for the first time by anaerobic microorganisms attached to the surface of the dense elastic packing 12 and in a suspension state, and COD and organic matters in the sewage are degraded; after passing through the intensive elastic filler 12, the sewage enters the second-stage transverse intercepting anaerobic digestion tank 3 through a water outlet of the first-stage transverse intercepting anaerobic digestion tank 2.
Step S3: the sewage flowing through the first-stage transverse intercepting anaerobic digestion tank 2 automatically flows into the lower end of the inner part of the second-stage transverse intercepting anaerobic digestion tank 3 through the second-stage perforated pipe 10, and when the sewage flows through the intensive elastic packing 12 at the middle end of the inner part of the second-stage transverse intercepting anaerobic digestion tank 3, the sewage is secondarily digested by anaerobic microorganisms attached to the surface of the intensive elastic packing 12 and in a suspension state, and COD (chemical oxygen demand) and organic matters in the sewage are degraded; after passing through the intensive elastic packing 12, the sewage enters the high-load ammonia nitrogen synchronous adsorption and desorption ecological infiltration bed 4 through a water outlet at the top of the right side of the second-stage transverse interception anaerobic digestion tank 3.
Step S4: the sewage flowing through the second-stage transverse intercepting anaerobic digestion tank 3 automatically flows into the high-load ammonia nitrogen synchronous adsorption and analysis ecological infiltration bed 4 through the overflowing filter plate 11, and the load ammonia nitrogen synchronous adsorption and analysis ecological infiltration bed 4 conveys oxygen to the root system of the aquatic plant 16 through the transportation of the aeration tissue of the aquatic plant 16; aerobic, anaerobic and anoxic microorganism environments are presented at root parts of the aquatic plants 16, the propagation of aerobic microorganisms, anaerobic microorganisms and anoxic microorganisms is facilitated, the contact area of sewage and the microorganisms is greatly increased, the organic nitrogen is subjected to shortcut nitrification-denitrification removal by utilizing the characteristic that a large number of aerobic bacteria, nitrifying bacteria, nitrosobacteria, denitrifying bacteria and other dominant microorganisms coexist regionally in the tank, and the inorganic nitrogen is absorbed by the aquatic plants 16; the improved zeolite is selected in the matrix layer, and the improved zeolite is synchronously analyzed to achieve stable ammonia nitrogen yielding water by utilizing the excellent molecular sieve structure and the characteristics of larger polarity, higher degree of unsaturation and stronger adsorption capacity when denitrifying bacteria perform denitrification; the high-load ammonia nitrogen synchronous adsorption and desorption ecological percolation bed 4 contains more iron, aluminum, calcium oxide and other substances through a multi-layer matrix layer, and is beneficial to generating iron phosphate, aluminum phosphate and calcium phosphate with low solubility so that the iron phosphate, the aluminum phosphate and the calcium phosphate are easily separated from sewage, and the optimal effect of phosphorus removal is achieved; the sewage is treated by a basalt substrate layer 13, an improved zeolite substrate layer 14 and a ceramsite substrate layer 15 in sequence, collected by a collecting pipe and then discharged from a water outlet 17 of the high-load ammonia nitrogen synchronous adsorption and desorption ecological infiltration bed 4.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
The invention is described above with reference to the accompanying drawings, which are illustrative, and it is obvious that the implementation of the invention is not limited in the above manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and technical solution, or to apply the inventive concept and technical solution to other fields without modification.
Claims (10)
1. A sewage treatment system for micro-power biological ecological purification is characterized by comprising a vertical flow grit chamber, a transverse interception anaerobic digestion device and a high-load ammonia nitrogen synchronous adsorption analytic ecological infiltration bed which are sequentially communicated,
the ecological percolation bed is characterized in that a basalt substrate layer, an improved zeolite substrate layer and a ceramsite substrate layer are sequentially arranged inside the ecological percolation bed with the high-load ammonia nitrogen synchronous adsorption and analysis from bottom to top, aquatic plants are planted on the upper portion of the ceramsite substrate layer, and sewage sequentially passes through the basalt substrate layer, the improved zeolite substrate layer and the ceramsite substrate layer and then is discharged from a water outlet of the ecological percolation bed with the high-load ammonia nitrogen synchronous adsorption and analysis.
2. The sewage treatment system of micro-power biological ecological purification according to claim 1, wherein the wall of the vertical flow grit chamber is provided with a central cylinder support, a central cylinder is arranged in the middle of the interior of the vertical flow grit chamber, the central cylinder is fixedly connected with the central cylinder support, the left end of the vertical flow grit chamber is provided with a water inlet, the water inlet of the vertical flow grit chamber is communicated with the central cylinder, the right end of the vertical flow grit chamber is provided with a water outlet, the water outlet of the vertical flow grit chamber is communicated with the water inlet of the transverse intercepting anaerobic digestion device, and the bottom of the vertical flow grit chamber is provided with a sludge discharge port.
3. The sewage treatment system of micro-power biological ecological purification of claim 2, wherein the two sides of the inside of the bottom of the vertical flow grit chamber are provided with inclined partition plates, the middle of the bottoms of the two inclined partition plates is a flat bottom, and the sludge discharge port is arranged on the flat bottom.
4. The sewage treatment system of micro-power biological ecological purification of claim 1, wherein the water outlet of the vertical flow grit chamber is provided with an adjustable triangular weir plate, and the top of the vertical flow grit chamber is provided with a manhole.
5. The sewage treatment system for micro-power biological ecological purification according to claim 1, wherein the transverse intercepting anaerobic digestion device comprises a primary transverse intercepting anaerobic digestion tank and a secondary transverse intercepting anaerobic digestion tank, and the vertical flow grit chamber, the primary transverse intercepting anaerobic digestion tank, the secondary transverse intercepting anaerobic digestion tank and the high-load ammonia nitrogen synchronous adsorption and desorption ecological percolation bed are communicated in sequence.
6. The sewage treatment system with micro-power biological ecological purification according to claim 5, wherein the upper end of the left side of the primary transverse intercepting anaerobic digestion tank is provided with a water inlet, the water outlet of the vertical flow grit chamber is communicated with the primary transverse intercepting anaerobic digestion tank through a primary perforated pipe, and the primary perforated pipe passes through the water inlet of the primary transverse intercepting anaerobic digestion tank and extends to the lower end of the inside of the primary transverse intercepting anaerobic digestion tank;
a water outlet is formed in the upper end of the right side of the first-stage transverse intercepting anaerobic digestion tank, a water inlet is formed in the upper end of the left side of the second-stage transverse intercepting anaerobic digestion tank, the water outlet of the first-stage transverse intercepting anaerobic digestion tank is communicated with the second-stage transverse intercepting anaerobic digestion tank through a second-stage perforated pipe, and the second-stage perforated pipe penetrates through the water inlet of the second-stage transverse intercepting anaerobic digestion tank and extends to the lower end of the inner part of the second-stage transverse intercepting anaerobic digestion tank;
and the top of the right side of the second-stage transverse intercepting anaerobic digestion tank is provided with a water outlet, and the water outlet of the second-stage transverse intercepting anaerobic digestion tank is communicated with the high-load ammonia nitrogen synchronous adsorption and analysis ecological infiltration bed through an overflowing filter plate.
7. The sewage treatment system of claim 6, wherein the middle inner ends of the first stage transverse intercepting anaerobic digester and the second stage transverse intercepting anaerobic digester are provided with a plurality of dense elastic fillers which are transversely arranged from left to right through a central line, the dense elastic fillers are arranged in a staggered mode, and the lower inner ends of the first stage transverse intercepting anaerobic digester and the second stage transverse intercepting anaerobic digester are provided with anaerobic activated sludge particles.
8. The sewage treatment system for micro-power biological ecological purification according to claim 6, wherein a water collecting pipe is arranged at the left side inside the ceramsite matrix layer, and the water collecting pipe is communicated with a water outlet of the high-load ammonia nitrogen synchronous adsorption and desorption ecological infiltration bed.
9. The sewage treatment system of micro-power biological ecological purification according to claim 5, wherein the ecological filtration bed for synchronous adsorption and desorption of high-load ammonia nitrogen is positioned above the primary transverse interception anaerobic digestion tank and the secondary transverse interception anaerobic digestion tank, a first vent cap is arranged in the middle of the top of the primary transverse interception anaerobic digestion tank, a second vent cap is arranged in the middle of the top of the secondary transverse interception anaerobic digestion tank, and the first vent cap and the second vent cap both penetrate through the ecological filtration bed for synchronous adsorption and desorption of high-load ammonia nitrogen.
10. The sewage treatment system for micro-power biological ecological purification according to claim 1, wherein the thickness of the basalt substrate layer is 30cm, and the particle size of the basalt substrate layer is 16-32 mm; the thickness of the improved zeolite matrix layer is 30cm, and the particle size of the improved zeolite matrix layer is 8-16 mm; the thickness of the ceramsite matrix layer is 44cm, and the particle size of the ceramsite matrix layer is 5-10 mm.
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