CN108675453A - Villages and small towns decentralized type sewage treatment reactor and its sewage water treatment method - Google Patents
Villages and small towns decentralized type sewage treatment reactor and its sewage water treatment method Download PDFInfo
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- CN108675453A CN108675453A CN201810802497.7A CN201810802497A CN108675453A CN 108675453 A CN108675453 A CN 108675453A CN 201810802497 A CN201810802497 A CN 201810802497A CN 108675453 A CN108675453 A CN 108675453A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 239000010865 sewage Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims description 23
- 239000010802 sludge Substances 0.000 claims abstract description 43
- 238000004062 sedimentation Methods 0.000 claims abstract description 35
- 238000005192 partition Methods 0.000 claims abstract description 25
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims description 27
- 230000005484 gravity Effects 0.000 claims description 20
- 238000005273 aeration Methods 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 11
- 244000005700 microbiome Species 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 239000006228 supernatant Substances 0.000 claims description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 238000004065 wastewater treatment Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005276 aerator Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000002906 microbiologic effect Effects 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a kind of villages and small towns decentralized type sewage treatment reactors, including reactor body, air blower, switch board, it is provided with cover board at the top of the reactor body, it is connected with switch board outside reactor body, the reactor body is internally provided with three partition boards, reactor body is divided into anoxic pond by the partition board, aerobic tank, sedimentation basin and clear water reserviors, it is both provided with water inlet pipe and outlet pipe in the anoxic pond and clear water reserviors, water pipe was provided in anoxic pond, the outlet for crossing water pipe is connected with the first water hole of partition board bottom, it is provided with the second water hole in the middle part of partition board between aerobic tank and sedimentation basin, partition board top between sedimentation basin and clear water reserviors is provided with overflow mechanism, outlet pipe is provided in clear water reserviors.The present invention has better biofilm effect, higher sludge concentration, improves ammonia nitrogen, COD degradation effect, simplifies structure, and remote monitoring and operation, and rapid-maintenance may be implemented in integrated intelligent cloud platform, safeguards few.
Description
Technical field
The present invention relates to the method and technologies more particularly to a kind of villages and small towns decentralized type sewage of sanitary sewage disposal and reuse to handle
Reactor and its sewage water treatment method.
Background technology
In recent years, with China's rapid development of economy, water environment pollution getting worse is national thus to put into substantial contribution
It builds centralized sewage treatment plant and mating sewage collecting pipe network, holding and improvement to water environment achieves certain effect,
However, build centralized sewage treatment plant there are scales of investment big, the construction period is long, need auxiliary construction sewage collecting pipe network and
The problems such as addressing and expropriation of land difficult, for a large amount of country sewages and from urban district, regional sanitary sewage is dirty against centralization is built farther out
Often far water is difficult to resolve nearly sewage progress that is thirsty, and using middle-size and small-size decentralized type sewage to handle integration apparatus to generation for water treatment plant
Treatment in situ qualified discharge carries out pipeline network construction without putting into substantial contribution, and construction fund is few, and the construction period is short, and addressing is flexible,
For solving the problems, such as that China's water environment pollution is of great advantage.Therefore, the small-scale sewage processing integration with removal of carbon and nitrogen function
Equipment has the huge market demand and wide development space.
In order to improve removal of carbon and nitrogen efficiency, Chinese invention patent CN103880185 discloses a kind of integrated A/O/MBBR
Reactor, including it is separated into anoxic zone, aerobic zone, guiding region, mud-water separating area and gathering ground by several concentric circles tubular partition boards
Circular cylinder body, anoxic zone top setting water inlet water-distributing device, middle part be arranged floating stuffing, bottom be provided with diving centrifugation aeration
Machine；Floating stuffing in the middle part of aerobic zone and aerator.But the stream of the floating stuffing of such sewage-treating reactor aerobic zone
The property changed is larger, and suspended state can be formed after sludge by hanging with is lost in flow, and the biofilm ability of floating stuffing is poor, works as attachment
Biofilm biomass it is larger when, biomembrane is easy to fall off, and part easy to produce anaerobism, the effective sludge reduced in system is dense
Degree, to reduce treatment effeciency.
Therefore, those skilled in the art are dedicated to developing a kind of efficient villages and small towns decentralized type sewage treatment reactor and its dirt
Method for treating water.
Invention content
In view of the drawbacks described above of the prior art, technical purpose of the invention is to provide a kind of efficient villages and small towns distributing dirt
Water processing reactor and its sewage water treatment method.
To realize the above-mentioned technical purpose, the present invention provides a kind of villages and small towns decentralized type sewage treatment reactors, including reaction
Device main body, air blower and switch board, reactor body top are provided with cover board, connect with switch board outside reactor body
It connects, the reactor body is internally provided with three partition boards, and reactor body is divided into anoxic pond, aerobic by the partition board
Pond, sedimentation basin and clear water reserviors are provided with water inlet pipe in the anoxic pond and cross water pipe, cross outlet and the partition board bottom of water pipe
First water hole is connected, and the second water hole, sedimentation basin and clear water reserviors are provided in the middle part of the partition board between aerobic tank and sedimentation basin
Between partition board top be provided with overflow mechanism, be provided with outlet pipe in clear water reserviors.
Further, the anoxic pond is provided with perforated pipe, and the partition board top of anoxic pond is provided with spout hole.
Further, the aerobic tank is located at the middle part of reactor body, and the aerobic tank is with reactor body
Concentric column, aerobic tank middle part are provided with fixed bed tablet filler, and the shape of fixed bed tablet filler is plate or en plaque, institute
The fixed bed tablet filler material stated is hydrophilic high molecular material.
Further, the air blower is provided with first outlet and second outlet, aerobic tank bottom setting
There are nanometer aeration device, nanometer aeration device to be connected with the first outlet of air blower.
Further, it is provided with gas lift mud discharging device in the sedimentation basin, the second of gas lift mud discharging device and air blower
Outlet is connected, and return duct is provided between the water inlet pipe in the gas lift mud discharging device and anoxic pond.
The present invention also provides a kind of sewage water treatment methods using above-mentioned villages and small towns decentralized type sewage treatment reactor, including
Following steps：
Step (1), first, sewage enter anoxic pond by water inlet pipe and carry out muddy water mixing, mixed mud mixture
Denitrification is carried out, the total nitrogen in water removal is removed；
Step (2) under the action of aeration and microorganism, carries out after anoxic pond water outlet enters aerobic tank in step (1)
Aerobic oxidation and nitrification go COD and ammonia nitrogen in water removal, water outlet to enter sedimentation basin from bottom；
Step (3), the outputted aerobic water in step (2) enter sedimentation basin, since gravity is separated by solid-liquid separation, make in water
Sludge and suspended particulate substance SS sink to bottom, supernatant gravity flow enters clear water reserviors.
Further, in step (1), the returned sludge of sewage and sedimentation basin in the duct after evenly mixing from bottom into
Enter anoxic pond, mud mixture carries out denitrification denitrogenation in slow uphill process, and sewage rises to gravity flow entrance after spout hole
The hydraulic detention time of aerobic tank, the anoxic pond of the step (1) is 5-12h, and COD removal rates are 20-50%, suspension
Grain object SS removal rates are in 30-70%.
Further, in step (2), dissolved oxygen is 1.5-4mg/L in aerobic tank, and the hydraulic detention time of aerobic tank is
1-3d, mud volume load are 0.2-0.6kg BOD/m3D, ammonia nitrogen loading reach 0.05-0.5 kgNH3-N/m3·d。
Further, in step (2), biomembrane, the thickness of biomembrane are attached in aerobic tank on fixed bed tablet filler
Degree is 0.5-3mm, provides good growing environment for the flourish of microorganism so that the sludge on fixed bed tablet filler
Concentration reaches 10-20g/L, i.e., on the basis of traditional aeration tank 3-5g/L suspension growth activated sludge, increases 10-20g/L
Sludge concentration, to greatly improve the treatment effeciency of system.
Further, in step (3), during the muddy water in sedimentation basin is blended in slowly rising, due to gravity
Effect, sludge return to bottom, and gravity flow is into clear water reserviors after flow rises to overflow port, to eliminate the suspended particulate substance in water
The hydraulic detention time of SS, entire reaction process are 3-7h；Meanwhile the sludge of sedimentation basin bottom is acted on by air pressure and being sucked
It in return duct, is then refluxed for anoxic pond being reused, reflux ratio 100-400%.
Beneficial effects of the present invention：
Compared with prior art, the present invention with better biofilm effect, higher sludge concentration, ammonia nitrogen, COD are improved
Degradation effect, stable effluent quality reach《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) level-one B is marked
Standard, and structure is simplified, remote monitoring and operation, and rapid-maintenance may be implemented in integrated intelligent cloud platform, safeguards few.
Description of the drawings
Fig. 1 is the longitudinal section view of the embodiment of the present invention 1；
Fig. 2 is the take over plan view of the embodiment of the present invention 1；
Fig. 3 is the take over plan view of the embodiment of the present invention 2；
Wherein, device main body, 2 air blowers, 3 switch boards, 4 water inlet pipes, 5 outlet pipes are answered 1, it is 6 nanometer aeration devices, 7 partition boards, 8 flat
Plate filler, 9 cover boards, 10 liters of mud discharging devices, 11 return ducts, 12 first water holes, 13 second water holes, 14 overflow mechanisms, 15 mistakes
Water pipe, 16 anoxic ponds, 17 aerobic tanks, 18 sedimentation basins, 19 clear water reserviors.
Specific implementation mode
The technique effect of the design of the present invention, concrete structure and generation is described further below with reference to attached drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Embodiment 1
As depicted in figs. 1 and 2, villages and small towns decentralized type sewage treatment reactor of the invention, including reactor body 1, air blast
Machine 2 and switch board 3,1 top of reactor body are provided with cover board 9, and 1 outside of reactor body is connect with switch board 3, institute
The reactor body 1 stated is internally provided with three partition boards 7, and the partition board 7 divides reactor body 1 for anoxic pond 16, aerobic
Pond 17, sedimentation basin 18 and clear water reserviors 19 are provided with water inlet pipe 4 in anoxic pond 16, and water pipe 15 was provided in anoxic pond 16, cross water
The outlet of pipe 15 is connected with the first water hole 12 of 7 bottom of partition board, 7 middle part of partition board between aerobic tank 17 and sedimentation basin 18
It is provided with the second water hole 13,7 top of partition board between sedimentation basin 18 and clear water reserviors 19 is provided with overflow mechanism 14, clear water reserviors 19
In be provided with outlet pipe 5.
The anoxic pond 16 is provided with perforated pipe, and 7 top of partition board of anoxic pond 16 is provided with spout hole.
The aerobic tank 17 is located at the middle part of reactor body 1, and the aerobic tank 17 and reactor body 1 are concentric
Cylinder.The middle part of aerobic tank 17 is provided with fixed bed tablet filler 8, and the shape of fixed bed tablet filler 8 is plate or en plaque,
8 material of fixed bed tablet filler is hydrophilic high molecular material.Fixed bed tablet filler 8 uses hydrophilicity macromolecule material
Material weaves, and not only so that biofilm speed is fast, biofilm is uniform, reduces the generation of local anaerobic phenomenon, and make sludge
The sludge concentration greatly improved without being lost in flow in system, the sludge on fixed bed tablet filler are fixed on filler
Concentration reaches 10-20g/L, to improve treatment effeciency.
The air blower 2 is provided with first outlet and second outlet (not shown), 18 bottom of aerobic tank
It is provided with nanometer aeration device 6, nanometer aeration device 6 is connected with the first outlet of air blower 2.
Gas lift mud discharging device 10 is provided in the sedimentation basin 18, gas lift mud discharging device 10 goes out with the second of air blower 2
Mouth is connected, and return duct 11 is provided between the water inlet pipe 4 in the gas lift mud discharging device 10 and anoxic pond 16.
The sewage water treatment method of the villages and small towns decentralized type sewage treatment reactor of the present invention, includes the following steps：
Step (1), first, sewage enter anoxic pond 16 by water inlet pipe, while the excess sludge in sedimentation basin 18 passes through
Gas lift mud discharging device 10 sequentially enters return line 11 with the vertical tube of water inlet pipe 4, and the returned sludge of sewage and sedimentation basin 18 exists
Entering anoxic pond 16 from bottom after evenly mixing in pipeline, mud mixture carries out denitrification denitrogenation in slow uphill process,
Then mud mixture entered water pipe 15 from bottom, crossed the mud mixture in water pipe 15 in slow uphill process, due to
Gravity carries out mud-water separation, and sludge sinks to reactor bottom, to eliminate the suspended particulate substance SS in water, suspended particulate
It is 40% that object SS removal rates, which reach 70%, COD removal rates, and gravity flow enters aerobic tank after sewage rises to the first water hole 12
17.Gravity flow enters aerobic tank 17 after sewage rises to spout hole, and the hydraulic detention time of anoxic pond 16 is 10h.
Step (2) under the action of aeration and microorganism, carries out aerobic oxygen after the water outlet of anoxic pond 16 enters aerobic tank 17
Change and nitrification go COD and ammonia nitrogen in water removal, water outlet to enter sedimentation basin 18 from bottom；It is exposed by air blower 2 and nanometer
It is 3mg/L that gas device 6, which is stably controlled the dissolved oxygen in aerobic tank 17, and the hydraulic detention time of aerobic tank 17 is 3d.So that aerobic
Microorganism can be carried out efficiently aerobic oxidation and nitrification, so that the mud volume load in aerobic tank 17 reaches
0.2kg COD/m3D, ammonia nitrogen loading reach 0.35kgNH3-N/m3D, water outlet COD, ammonia nitrogen, which are stablized, to be met《Urban wastewater treatment
Factory's pollutant emission standard》(GB18918-2002) level-one B standard.
The biofilm thickness adhered on fixed bed tablet filler 8 in aerobic tank 17 is 3mm, is carried for the flourish of microorganism
Good growing environment is supplied so that the sludge concentration on fixed bed tablet filler 8 reaches 10 g/L, i.e., in traditional aeration tank
On the basis of 4g/L suspension growth activated sludge, to greatly improve the treatment effeciency of system.
Step (3), outputted aerobic water enters sedimentation basin 18, during the muddy water in sedimentation basin 18 is blended in slowly rising,
Due to gravity, sludge returns to bottom, and gravity flow is into clear water reserviors 19 after flow rises to overflow port, to eliminate in water
The hydraulic detention time of suspended particulate substance SS, entire reaction process are 3h；Meanwhile the sludge of 18 bottom of sedimentation basin passes through air pressure
Force effect sucks in return duct 11, is then refluxed for anoxic pond 16 being reused, reflux ratio 400%.Bottom can be sunk
It was back to the re-using of water pipe 15 after the sludge sucking return duct 11 in shallow lake, not only avoids 18 bottom sludge discharge effects of sedimentation basin
Difference, and the excess sludge of system can be recycled, the sludge concentration in anoxic pond is improved, to improve system
Treatment effect.
Embodiment 2
Embodiment 2 is substantially the same manner as Example 1, difference lies in：Villages and small towns decentralized type sewage processing reaction of the present invention
The sewage water treatment method of device, includes the following steps：
In step (1), it is 20% that suspended particulate substance SS removal rates, which reach 30%, COD removal rates, and sewage rises to overflow
Gravity flow enters aerobic tank 17 behind hole, and the hydraulic detention time of anoxic pond 16 is 5h.
In step (2), the microorganism adhered on fixed bed tablet filler 8 is aerobic under conditions of dissolved oxygen is 4mg/L
The hydraulic detention time in pond 17 is 2d.Sludge concentration on fixed bed tablet filler 8 reaches 10g/L, passes through air blower 2 and nanometer
Aerator 6 is stably controlled the dissolved oxygen in aerobic tank 17 between 4mg/L.Ammonia nitrogen loading reaches 0.5kgNH3-N/m3·
d.So that aerobic microbiological can be carried out efficiently aerobic oxidation and nitrification, so that the mud volume in aerobic tank 17
Load reaches 1.0kg COD/m3D, ammonia nitrogen loading reach 0.05kgNH3-N/m3D, water outlet COD, ammonia nitrogen, which are stablized, to be met《City
Town Wastewater Treatment discharge standard》(GB18918-2002) level-one B standard.
The biofilm thickness adhered on fixed bed tablet filler 8 in aerobic tank 17 is 0.5mm, is the flourish of microorganism
Provide good growing environment so that the sludge concentration on fixed bed tablet filler 8 reaches 20g/L, i.e., in traditional aeration tank
On the basis of 3g/L suspension growth activated sludge, to greatly improve the treatment effeciency of system.
In step (3), during the muddy water in sedimentation basin 18 is blended in slowly rising, due to gravity, sludge
Bottom is returned to, gravity flow is into clear water reserviors after flow rises to overflow port, entire anti-to eliminate the suspended particulate substance SS in water
It is 5h to answer the hydraulic detention time of process；It is then refluxed for anoxic pond 16 being reused, reflux ratio 300%.
Embodiment 3
Embodiment 3 is substantially the same manner as Example 1, difference lies in：Villages and small towns decentralized type sewage processing reaction of the present invention
The sewage water treatment method of device, includes the following steps：
In step (1), it is 50% that suspended particulate substance SS removal rates, which reach 50%, COD removal rates, and sewage rises to overflow
Gravity flow enters aerobic tank 17 behind hole, and the hydraulic detention time of anoxic pond 16 is 12h.
In step (2), the microorganism that adheres on fixed bed tablet filler 8 under conditions of dissolved oxygen is 1.5mg/L,
The hydraulic detention time of aerobic tank 17 is 1d.Sludge concentration on fixed bed tablet filler reaches 15g/L, by air blower 2 and
Nanometer aeration device 6 is stably controlled the dissolved oxygen in aerobic tank 17 between 1.5mg/L.Ammonia nitrogen loading reaches
0.05kgNH3-N/m3·d.So that aerobic microbiological can be carried out efficiently aerobic oxidation and nitrification, so that aerobic
Mud volume load in pond 17 reaches 0.8kg COD/m3D, ammonia nitrogen loading reach 0.5kgNH3-N/m3D, water outlet COD,
Ammonia nitrogen, which is stablized, to be met《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) level-one B standard.In aerobic tank 17
The biofilm thickness adhered on fixed bed tablet filler 8 is 2.5mm, and good growth ring is provided for the flourish of microorganism
Border so that the sludge concentration on fixed bed tablet filler reaches 15g/L, i.e., in traditional aeration tank 5g/L suspension growth activated sludge
On the basis of, the sludge concentration of 10-20g/L is increased, to greatly improve the treatment effeciency of system.
In step (3), during the muddy water in sedimentation basin 18 is blended in slowly rising, due to gravity, sludge
Bottom is returned to, gravity flow is into clear water reserviors after flow rises to overflow port, entire anti-to eliminate the suspended particulate substance SS in water
It is 7h to answer the hydraulic detention time of process；It is then refluxed for anoxic pond 16 being reused, reflux ratio 300%.
Embodiment 4
Embodiment 4 is substantially the same manner as Example 1, difference lies in：As shown in figure 3, villages and small towns distributing of the present invention is dirty
The sewage water treatment method of water processing reactor, includes the following steps：
One improvement is that anoxic pond is divided into the first anoxic pond and the second anoxic pond, changes water (flow) direction so that remaining
Sludge is largely fixed in the first anoxic pond, the sludge concentration in the second anoxic pond is reduced, to reduce in aerobic water inlet
Suspended particulate substance SS improves water quality.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of villages and small towns decentralized type sewage treatment reactor, it is characterised in that：The villages and small towns decentralized type sewage treatment reactor
Including reactor body (1), air blower (2) and switch board (3), it is provided with cover board (9) at the top of the reactor body (1),
It is connected with switch board (3) outside reactor body (1), the reactor body (1) is internally provided with three partition boards (7),
Reactor body (1) is divided into anoxic pond (16), aerobic tank (17), sedimentation basin (18) and clear water reserviors by the partition board (7)
(19), it is provided with water inlet pipe (4) in the anoxic pond (16) and crosses water pipe (15), crosses outlet and the partition board (7) of water pipe (15)
The first water hole (12) of bottom is connected, and second is provided in the middle part of the partition board (7) between aerobic tank (17) and sedimentation basin (18)
Water hole (13), partition board (7) top between sedimentation basin (18) and clear water reserviors (19) are provided with overflow mechanism (14), clear water reserviors
(19) outlet pipe (5) is provided in.
2. decentralized type sewage treatment reactor in villages and small towns according to claim 1, it is characterised in that：The anoxic pond (16)
It is provided with perforated pipe, partition board (7) top of anoxic pond (16) is provided with spout hole.
3. decentralized type sewage treatment reactor in villages and small towns according to claim 1, it is characterised in that：The aerobic tank (17)
Middle part positioned at reactor body (1), the aerobic tank (17) are concentric column, aerobic tank (17) with reactor body (1)
Middle part is provided with fixed bed tablet filler (8), and the shape of fixed bed tablet filler (8) is plate or en plaque, the fixation
Bed tablet filler (8) material is hydrophilic high molecular material.
4. decentralized type sewage treatment reactor in villages and small towns according to claim 1, it is characterised in that：The air blower (2)
It is provided with first outlet and second outlet, the aerobic tank (18) bottom is provided with nanometer aeration device (6), nanometer aeration device
(6) it is connected with the first outlet of air blower (2).
5. decentralized type sewage treatment reactor in villages and small towns according to claim 1, it is characterised in that：The sedimentation basin (18)
In be provided with gas lift mud discharging device (10), gas lift mud discharging device (10) is connected with the second outlet of air blower (2), the gas
It is provided with return duct (11) between water inlet pipe (4) in liter mud discharging device (10) and anoxic pond (16).
6. the sewage water treatment method of decentralized type sewage treatment reactor in villages and small towns described in any one of claim 1 to 5, including it is as follows
Step：
Step (1), first sewage enter anoxic pond (16) by water inlet pipe (4) and carry out muddy water mixing, mixed muddy water mixing
Object carries out denitrification, removes the total nitrogen in water removal；
Step (2), after anoxic pond (16) water outlet enters aerobic tank (17) in step (1), under the action of aeration and microorganism,
Aerobic oxidation and nitrification are carried out, COD and ammonia nitrogen in water removal, water outlet is gone to enter sedimentation basin (18) from bottom；
Step (3), the outputted aerobic water in step (2), which enters sedimentation basin (18), to be made since gravity is separated by solid-liquid separation in water
Sludge and suspended particulate substance SS sink to bottom, supernatant gravity flow enters clear water reserviors (19).
7. the sewage water treatment method of decentralized type sewage treatment reactor in villages and small towns according to claim 6, it is characterised in that：
In step (1), the returned sludge of sewage and sedimentation basin (18) enters anoxic pond (16), mud from bottom after evenly mixing in the duct
Aqueous mixtures carry out denitrification denitrogenation in slow uphill process, and sewage flows automatically after rising to spout hole into aerobic tank (17),
The hydraulic detention time of the anoxic pond (16) of the step (1) is 5-12h.
8. the sewage water treatment method of decentralized type sewage treatment reactor in villages and small towns according to claim 6, it is characterised in that：
In step (2), dissolved oxygen is 1.5-4mg/L in aerobic tank (17), and the hydraulic detention time of aerobic tank is 1-3d, and mud volume is negative
Lotus is 0.2-0.6kg BOD/m3D, ammonia nitrogen loading reach 0.05-0.5kgNH3-N/m3·d。
9. the sewage water treatment method of decentralized type sewage treatment reactor in villages and small towns according to claim 6, it is characterised in that：
In step (2), biomembrane is attached in aerobic tank (17) on fixed bed tablet filler, the thickness of biomembrane is 0.5-3mm so that
Sludge concentration on fixed bed tablet filler reaches 10-20g/L, i.e., in traditional aeration tank 3-5g/L suspension growth activated sludge
On the basis of, increase the sludge concentration of 10-20g/L.
10. the sewage water treatment method of decentralized type sewage treatment reactor in villages and small towns according to claim 6, it is characterised in that：
In step (3), during the muddy water in sedimentation basin (18) is blended in slowly rising, due to gravity, sludge returns to bottom
Portion, gravity flow is into clear water reserviors after flow rises to overflow port, to eliminate the suspended particulate substance SS in water, entire reaction process
Hydraulic detention time be 3-7h；Meanwhile the sludge of sedimentation basin (18) bottom acts on sucking return duct (11) by air pressure
In, it is then refluxed for anoxic pond (16) being reused, reflux ratio 100-400%.
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| CN116535005A (en) * | 2023-06-29 | 2023-08-04 | 成都理工大学 | Intelligent synchronous nitrification and denitrification treatment system and method for domestic sewage |
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