CN108640275A - A kind of Two-way Cycle short-cut nitrification and denitrification reactor and its working method - Google Patents
A kind of Two-way Cycle short-cut nitrification and denitrification reactor and its working method Download PDFInfo
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- CN108640275A CN108640275A CN201810328112.8A CN201810328112A CN108640275A CN 108640275 A CN108640275 A CN 108640275A CN 201810328112 A CN201810328112 A CN 201810328112A CN 108640275 A CN108640275 A CN 108640275A
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- 238000000034 method Methods 0.000 title claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000001301 oxygen Substances 0.000 claims abstract description 51
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 51
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000010992 reflux Methods 0.000 claims abstract description 37
- 238000012856 packing Methods 0.000 claims abstract description 25
- 239000010802 sludge Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 61
- 239000000523 sample Substances 0.000 claims description 36
- 230000001105 regulatory effect Effects 0.000 claims description 26
- 239000000945 filler Substances 0.000 claims description 18
- 230000006837 decompression Effects 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000008247 solid mixture Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 241000239290 Araneae Species 0.000 claims description 3
- 238000005276 aerator Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006396 nitration reaction Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 101100204059 Caenorhabditis elegans trap-2 gene Proteins 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000036284 oxygen consumption Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002351 wastewater Substances 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
- C02F3/302—Nitrification and denitrification treatment
Abstract
A kind of Two-way Cycle short-cut nitrification and denitrification reactor belongs to sewage disposal bio-denitrification technology field equipment.The moisture trap of the reactor is mounted on top of the tank, and upper return duct one end is connected to moisture trap bottom, and the upper return duct other end is connected on the horizontal tube above the first biological rope packing layer, and multigroup upper reflux nozzle is equipped on horizontal tube；Lower return duct upper end is connected to moisture trap bottom, and lower return duct lower end is connected to the first cross tee mounted on water distribution mixed zone, multigroup lower reflux nozzle is equipped on each pipe arm of the first cross tee；Exhaust pipe one end is connected at the top of moisture trap, and the exhaust pipe other end is connected in tank body below the water surface.Reactor has the function of Two-way Cycle, realizes quickly mixing, and mass transfer effect is superior, and anti-load impact ability is strong, and denitrification rate is high.Reactor oxygen demand is few, reduces energy consumption, reduces organic carbon source, reduces the dosage of alkali, and sludge yield is less, saves operating cost, and ratio of height to diameter is big, saves floor space.
Description
Technical field
The present invention relates to a kind of biological denitrification reactors, belong to sewage disposal bio-denitrification technology field, specifically a kind of
Two-way Cycle short-cut nitrification and denitrification reactor (Double cycle shortcut nitrification-
Denitrification reactor, DC-SNDR reactor).
Technical background
Traditional biological denitrification process is a complete bio denitrification process, including ammoniation, nitrification and anti-nitre
Change effect is constituted, and is that aerobic nitrification process is sequentially or alternately completed with anoxic denitrification, by the effect of ammonifiers by organic nitrogen oxygen
Change is decomposed into NH4+-N；Then by autotrophic type nitrobacteria by NH4+- N is oxidized to NO2-- N and NO3--N；Then NO2-- N and NO3--
N is reduced to N under the action of denitrifying bacteria2Or other nitrogen oxides, last N2It discharges into the atmosphere, to reach denitrogenation
Purpose.During complete nitrification, oxygen consumption equivalent is 2.86g O2/gNO3- N, for the aeration for meeting needed for complete nitration reaction,
Its process considerably increases the whole energy consumption and operating cost of sewage disposal process.
Research short-cut nitrification and denitrification technique is more both at home and abroad, and principle is to utilize ammonia oxidation bacteria and nitrite oxidizing bacteria
The otherness of nitrogen transformation controls ammonium oxidation in NO2- N the stages eliminate in traditional biological denitrogenation by nitrite-oxidizing
At nitrate, it is then reduced into nitrite, short-cut nitrification and denitrification technique oxygen consumption equivalent is 1.71gO2/gNO3- N significantly drops
The low whole energy consumption and operating cost of sewage disposal process.But engineering application rarely has example, forms Integration Equipment and answers
It is less, it is imperative to invent efficient short-cut nitrification and denitrification novel all-in-one reactor.
Invention content
The present invention is directed to bio-denitrification technology field, provides a kind of Two-way Cycle short-cut nitrification and denitrification reactor, utilizes nitre
In intrinsic difference present on kinetic characteristics, control nitration reaction only proceeds to NO for sour bacterium and Nitrosomas2-- N the stages are formed
A large amount of NO2-Simultaneously implantation is conducive to reactor Two-way Cycle mass transfer and carries out anti-nitration reaction, be suitble on the filler of reactor for-N accumulations
The biological denitrificaion of the low basic, normal, high concentration organic wastewater of carbon-nitrogen ratio is handled.
To achieve the goals above, present invention employs following technical schemes：
Two-way Cycle short-cut nitrification and denitrification reactor, including tank body, annular shelves water plate, gas gathering mask, aerating system, the first life
Object rope packing layer, the second biological rope packing layer, third biological rope packing layer, moisture trap, upper return duct, upper reflux nozzle,
Lower return duct, the first cross tee, lower reflux nozzle, exhaust pipe, gas collecting tube, taper time mud plate, inclined plate, effluent weir, outlet pipe, into
Water pipe, the second cross tee, into sprinkler head, inner deflector, middle deflector and sludge pipe；
Annular shelves water plate is concentrically mounted on tank interior upper end, and gas gathering mask is mounted under tank interior annular shelves water plate
Side, aerating system are mounted on the lower section of tank interior gas gathering mask；Annular region between annular shelves water plate and tank body is settling zone,
The water surface of circular portion is upper denitrification zone in gas gathering mask top to annular shelves water plate, nitrification zone be located at gas gathering mask and aerating system it
Between, it is lower denitrification zone below aerating system, lower denitrification zone lower section to the space of tank bottom is water distribution mixed zone；
Upper denitrification zone is equipped with the first biological rope packing layer, and nitrification zone is equipped with the second biological rope packing layer, lower denitrification zone
Equipped with third biological rope packing layer；
Moisture trap is mounted on top of the tank, and upper return duct one end is connected to moisture trap bottom, and upper return duct is another
One end is connected on the horizontal tube above the first biological rope packing layer, and multigroup upper reflux nozzle is equipped on horizontal tube；Next time
Flow tube upper end is connected to moisture trap bottom, and lower return duct lower end is connected to the first cross tee mounted on water distribution mixed zone, the
Multigroup lower reflux nozzle is installed on each pipe arm of one cross tee；Exhaust pipe one end is connected at the top of moisture trap, exhaust pipe
The other end is connected in tank body below the water surface；Gas collecting tube lower end is connected to the vertex of a cone of gas gathering mask, and gas collecting tube upper end passes through horizontal tube
It repeatedly kicks into moisture trap；
The miner diameter end of taper time mud plate is fixedly connected in upper and ring-shaped splash guard lower end, and the bigger diameter end of taper time mud plate exists
Under, it is water passage between the bigger diameter end and tube wall of taper time mud plate, polylith inclined plate is mounted in the taper time mud plate of settling zone
Side, multiple effluent weirs are mounted on above inclined plate, and each effluent weir is flute profile, and each effluent weir is arranged along tank diameter direction, goes out
Water pipe one end is connected on effluent weir, and the other end is connected to outside tank body；
Water inlet pipe one end is connect with water source, and the water inlet pipe other end is connect with the second cross tee mounted on water distribution mixed zone,
It is equipped on each pipe arm of second cross tee multigroup into sprinkler head；
Inner deflector and middle deflector are the circular arc type with tank body concentric, and inner deflector and middle deflector mix water distribution
It closes area and divides inward turning confounding, middle rotation confounding and outward turning confounding successively outward from tank body center；
Sludge pipe is mounted on tank base.
Further, further include nitrification zone dissolved oxygen probe, lower denitrification zone dissolved oxygen probe, upper denitrification zone dissolved oxygen
Probe, lower regulating valve, upper regulating valve and decompression control valve；
Lower denitrification zone dissolved oxygen probe is arranged in lower denitrification zone；Nitrification zone dissolved oxygen probe is arranged in nitrification zone；On
Denitrification zone dissolved oxygen probe is arranged in upper denitrification zone；Regulating valve is installed on upper return duct, is equipped with and lets out on exhaust pipe
Regulating valve is pressed, lower regulating valve is installed on lower return duct.
Further, further include control system, the aerating system, nitrification zone dissolved oxygen probe, the dissolving of lower denitrification zone
Oxygen probe, upper denitrification zone dissolved oxygen probe, lower regulating valve, upper regulating valve and decompression control valve connect realization with control system
Automatically control work.
Further, jet direction, the jet stream into sprinkler head of the jet direction of the upper reflux nozzle, lower reflux nozzle
Direction all same and along the secant direction of tank body cross section；The jet direction of gas collecting tube upper end horizontal tube is along gas-water separation
The secant direction of device cross section.
Further, each pipe arm of the first cross tee is in the part point of inward turning confounding, middle rotation confounding and outward turning confounding
Lower She Zhi not flow back nozzle；Each pipe arm of second cross tee is in the part point of inward turning confounding, middle rotation confounding and outward turning confounding
Not She Zhi outer circulation into sprinkler head.
Further, the aerating system is that diaphragm aeration equipment or rotation mix any of aerator or aeration tube；Air water point
It is taper of the miner diameter end under from device bottom.
Further, the inner deflector and the quantity of middle deflector >=2, the every inner deflector and middle water conservancy diversion
The arc length of plate≤quarter turn, each inner deflector is uniformly distributed circumferentially, and each middle deflector is also uniformly dispersed in circumference
On, inner deflector and middle deflector interlaced arrangement；First cross tee and the second cross tee arranged crosswise, inner deflector are placed in tank
Bottom, middle deflector are fixed on tank bottom by support leg.
Further, the biological rope packing layer is fixed by upper layer and lower layer holder, and every layer of holder is by biological rope filler allotment
Frame, biological rope filler concentric circles holder constitute spider reticulation structure, and biological rope filler is fixed on biological rope filler concentric circles holder
On.
The working method of the Two-way Cycle short-cut nitrification and denitrification reactor,
(1) when running, reactor is inoculated with aerobic sludge, and the water outlet of anaerobic system is directly entered tank base by water inlet pipe；
(2) start aerating system, gas, liquid, solid mixture is made to be arrived by gas collecting tube promotion in the inside and outside formation density contrast of gas gathering mask
The moisture trap of tank deck, a part of mixture flow back into the water distribution mixed zone of tank base by lower return duct, and from next time
It flows nozzle to project, and forms rotation mixing, rise through lower denitrification zone, nitrification zone, tank deck is arrived by gas collecting tube promotion again
Moisture trap forms lower cycle；Another part gas, liquid, solid mixture flows back into upper denitrification zone from upper by upper return duct
The nozzle that flows back projects, and forms rotation mixing, sinks to passing through upper denitrification zone, and the reflux seam between gas gathering mask and tank body enters
Nitrification zone under gas gathering mask promotes the moisture trap to tank deck by gas collecting tube again, is recycled in formation；Water outlet is by settling zone
Inclined plate after rise overflow and enter effluent weir, then next processing unit is discharged by outlet pipe.
Aerating system is according to nitrification zone dissolved oxygen probe feedback data discontinuous operation or continuous work, nitrification zone dissolved oxygen control
0.8-1.5mg/L processed, it is big that lower regulating valve on lower return duct according to lower denitrification zone dissolved oxygen probe feedback data adjusts reflux
Small, lower denitrification zone dissolved oxygen controls 0.2-0.5mg/L, and the upper regulating valve on upper return duct is visited according to upper denitrification zone dissolved oxygen
Head feedback data adjusts reflux size, and upper denitrification zone dissolved oxygen controls 0.2-0.8mg/L, decompression control valve control pressure
0.01-0.03MPa。
Two-way Cycle short-cut nitrification and denitrification reaction utensil of the present invention has the advantage that：
(1) Two-way Cycle function realizes quickly mixing, and mass transfer effect is superior, and anti-load impact ability is strong, denitrification rate
It is high.
(2) oxygen demand for reducing 25% or so, reduces energy consumption.
(3) organic carbon source for reducing 40% or so, saves operating cost
(4) reactor integral structure saves floor space；
(5) complete nitrification and denitrification process is compared, sludge yield is few；
(6) dosage of alkali is reduced.
Description of the drawings
Fig. 1：Two-way Cycle short-cut nitrification and denitrification structure of reactor schematic diagram.
Fig. 2：Filler schematic diagram of a layer structure.
Fig. 3：Water distribution mixed zone structural schematic diagram.
In figure：1, tank body, 2, water inlet pipe, 3, outlet pipe, 4, sludge pipe, 5, lower denitrification zone, 6, nitrification zone, 7, upper anti-nitre
Change area, 8, settling zone, 9, water distribution mixed zone, 10, aerating system, 11, gas gathering mask, 12, moisture trap, 13, lower return duct,
14, upper return duct, 15, exhaust pipe, 16, effluent weir, 17, inclined plate, 18, time mud plate, 19, water fender, 20, biological rope filler allotment
Frame, 21, biological rope filler concentric circles holder, 22, biological rope filler, 23, lower reflux nozzle, 24, upper reflux nozzle, 25, water inlet
Nozzle, 26, gas collecting tube, 27, nitrification zone dissolved oxygen probe, 28, lower denitrification zone dissolved oxygen probe, 29, the dissolving of upper denitrification zone
Oxygen probe, 30, lower regulating valve, 31, upper regulating valve, 32, decompression control valve, 33, control system, 34, inward turning confounding, 35, middle rotation
Confounding, 36, outward turning confounding, 37, inner deflector, 38, middle deflector.
Specific implementation mode
Further illustrate that implementation of the invention is not limited to the following example to seat of the present invention with reference to example, attached drawing.
Embodiment 1
Two-way Cycle short-cut nitrification and denitrification reactor, including tank body 1, annular shelves water plate 19, gas gathering mask 11, aerating system
10, the first biological rope packing layer, the second biological rope packing layer, third biological rope packing layer, moisture trap 12, upper return duct
14, upper reflux nozzle 24, lower return duct 13, the first cross tee, lower reflux nozzle 23, exhaust pipe 15, gas collecting tube 26, taper return mud
Plate 18, inclined plate 17, effluent weir 16, outlet pipe 3, water inlet pipe 2, the second cross tee, into sprinkler head 25, inner deflector 37, middle water conservancy diversion
Plate 38 and sludge pipe 4；
Annular shelves water plate 19 is concentrically mounted on 1 inner upper end of tank body, and gas gathering mask 11 is mounted on tank interior annular shelves water plate
19 lower section, aerating system 10 are mounted on the lower section of tank interior gas gathering mask 11；Annular between annular shelves water plate 19 and tank body 1
Region is settling zone 8, and it is upper denitrification zone 7 that gas gathering mask 11, which is pushed up to the water surface of circular portion in annular shelves water plate 19, and nitrification zone 6 is located at
Between gas gathering mask 11 and aerating system 10,10 lower section of aerating system is lower denitrification zone 5,5 lower section of lower denitrification zone to tank bottom
Space is water distribution mixed zone 9；
Upper denitrification zone 7 is equipped with the first biological rope packing layer, and nitrification zone 6 is equipped with the second biological rope packing layer, lower denitrification
Area 5 is equipped with third biological rope packing layer；
Moisture trap 12 is mounted on 1 top of tank body, and 14 one end of upper return duct is connected to 12 bottom of moisture trap, last time
On another horizontal tube being connected to above the first biological rope packing layer of flow tube 14, multigroup upper reflux spray is installed on horizontal tube
First 24；Lower 13 upper end of return duct is connected to 2 bottom of moisture trap, is connected to mounted on water distribution mixed zone 9 under lower return duct 13
The first cross tee, multigroup lower reflux nozzle 23 is installed on each pipe arm of the first cross tee；15 one end of exhaust pipe is connected to gas
12 top of separator, 15 other end of exhaust pipe are connected in tank body 1 below the water surface；26 lower end of gas collecting tube is connected to gas gathering mask 11
The vertex of a cone, 26 upper end of gas collecting tube is repeatedly kicked by horizontal tube in moisture trap 2；
The miner diameter end of taper time mud plate 18 is fixedly connected in upper and 41 lower end of ring-shaped splash guard, the major diameter of taper time mud plate 18
End is water passage under, between the bigger diameter end and tube wall 1 of taper time mud plate 18, and polylith inclined plate 17 is mounted on the cone of settling zone 8
18 top of shape time mud plate, multiple effluent weirs 16 are mounted on 17 top of inclined plate, and each effluent weir 16 is flute profile, 16 edge of each effluent weir
Tank diameter direction is arranged, and 3 one end of outlet pipe is connected on effluent weir 16, and the other end is connected to outside tank body 1；
2 one end of water inlet pipe is connect with water source, and 2 other end of water inlet pipe connects with the second cross tee mounted on water distribution mixed zone 9
It connects, is equipped on each pipe arm of the second cross tee multigroup into sprinkler head 25；
Inner deflector 37 and middle deflector 38 are the circular arc type with tank body concentric, inner deflector 37 and middle deflector 38
Water distribution mixed zone 6 is divided into inward turning confounding 34, middle rotation confounding 35 and outward turning confounding 36 successively outward from 1 center of tank body；
Sludge pipe 4 is mounted on tank base.
Further, further include that nitrification zone dissolved oxygen probe 27, lower denitrification zone dissolved oxygen probe 28, upper denitrification zone are molten
Solve oxygen probe 29, lower regulating valve 30, upper regulating valve 31 and decompression control valve 32；
Lower denitrification zone dissolved oxygen probe 28 is arranged in lower denitrification zone 5；The setting of nitrification zone dissolved oxygen probe 27 is nitrifying
Area 6；Upper denitrification zone dissolved oxygen probe 29 is arranged in upper denitrification zone 7；Regulating valve 31 is installed on upper return duct 14, is vented
Decompression control valve 32 is installed on pipe 15, lower regulating valve 30 is installed on lower return duct 13.
Further, further include control system 33, the aerating system 10, nitrification zone dissolved oxygen probe 27, lower denitrification
Area's dissolved oxygen probe 28, upper denitrification zone dissolved oxygen probe 29, lower regulating valve 30, upper regulating valve 31 and decompression control valve 32 with
The connection of control system 33, which is realized, automatically controls work.
Further, the jet direction of the upper reflux nozzle 24, the jet direction of lower reflux nozzle 23, into sprinkler head 25
Jet direction all same and along the secant direction of 1 cross section of tank body；The jet direction of 14 upper end horizontal tube of the gas collecting tube
Secant direction along 2 cross section of moisture trap.
Further, each pipe arm of the first cross tee is in inward turning confounding 34, middle rotation confounding 35 and outward turning confounding 36
Lower reflux nozzle 12 is respectively set in part；Each pipe arm of second cross tee is in inward turning confounding 34, middle rotation confounding 35 and outward turning
Outer circulation is respectively set into sprinkler head 29 in the part of confounding 36.
Further, the aerating system 5 is that diaphragm aeration equipment or rotation mix any of aerator or aeration tube；Air water point
It is taper of the miner diameter end under from 2 bottom of device.
Further, the inner deflector 37 and the quantity of middle deflector 38 >=2, every 37 He of the inner deflector
The arc length of middle deflector 38≤quarter turn, each inner deflector 37 is uniformly distributed circumferentially, and each middle deflector 38 is also
It is even to be distributed circumferentially, 38 interlaced arrangement of inner deflector 37 and middle deflector；First cross tee and the second cross tee arranged crosswise,
Inner deflector 37 is placed in tank bottom, and middle deflector 38 is fixed on tank bottom by support leg.
Further, the biological rope packing layer is fixed by upper layer and lower layer holder, and every layer of holder is by biological rope filler allotment
Frame 20, biological rope filler concentric circles holder 21 constitute spider reticulation structure, and it is concentric that biological rope filler 20 is fixed on biological rope filler
On circle holder 22.
The working method of the Two-way Cycle short-cut nitrification and denitrification reactor,
(1) when running, reactor is inoculated with aerobic sludge, and the water outlet of anaerobic system is directly entered 1 bottom of tank body by water inlet pipe；
(2) start aerating system 10, make gas, liquid, solid mixture in 11 inside and outside formation density contrast of gas gathering mask by gas collecting tube 26
The moisture trap 12 of tank deck is promoted, the water distribution that a part of mixture flows back into 1 bottom of tank body by lower return duct 13 mixes
Area 9, and projected from lower reflux nozzle 23, and rotation mixing is formed, lower denitrification zone 5, nitrification zone 6 are risen through, is collected again
Tracheae 26 promotes the moisture trap 12 to tank deck, forms lower cycle；Another part gas, liquid, solid mixture passes through upper return duct
14 flow back into denitrification zone 7 projects from upper reflux nozzle 24, and forms rotation mixing, sinks to passing through upper denitrification zone 7, along collection
Reflux seam between gas hood 11 and tank body 1 enters the nitrification zone 6 under gas gathering mask 11, is promoted the gas to tank deck by gas collecting tube 26 again
Separator 12 recycles in formation；Water outlet rises overflow after the inclined plate 17 of settling zone 8 and enters effluent weir 16, then by being discharged
Pipe 3 is discharged into next processing unit.
The working method of the Two-way Cycle short-cut nitrification and denitrification reactor, aerating system 10 is according to nitrification zone dissolved oxygen
It pops one's head in 27 feedback data discontinuous operations or continuous work, 6 dissolved oxygen of nitrification zone controls 0.8-1.5mg/L, on lower return duct 13
Lower regulating valve 30 adjusts reflux size, the 5 dissolved oxygen control of lower denitrification zone according to lower 28 feedback data of denitrification zone dissolved oxygen probe
0.2-0.5mg/L processed, the upper regulating valve 31 on upper return duct 14 are adjusted according to upper 29 feedback data of denitrification zone dissolved oxygen probe
Flow back size, and 7 dissolved oxygen of upper denitrification zone controls 0.2-0.8mg/L, 32 control pressure 0.01-0.03MPa of decompression control valve.
Embodiment 2
Upper denitrification zone 7 accounts for the 1/4-1/3 of 1 height of tank body, and nitrification zone 6 accounts for the 1/3-1/2 of 1 height of tank body, lower denitrification
Area 5 accounts for the 1/4-1/3 of 1 height of tank body, upper 24 quantity >=3 group of reflux nozzle, and 15 other end of exhaust pipe is connected to the water surface in tank body
Following 5-30 centimetres, 20-40 centimetres of the spacing of biological rope filler.
17 side of inclined plate is fixed on tank skin, and 17 other side of inclined plate is fixed on ring-shaped splash guard 41,17 plane of inclined plate and circle
The longitudinal section of column tank body is misaligned.
It is the water passage of 15-45 centimetres of spacing between the bigger diameter end and tube wall 1 of taper time mud plate 18.
Each effluent weir 16 is radial to be uniformly distributed using tank body axis as the center of circle, and one end is fixed on tank skin, and the other side is solid
It is scheduled on ring-shaped splash guard 41, each effluent weir 16 is connected by pipeline.
Effluent weir 16 is located at 5-20 centimeters below tank deck.
1 ratio of height to diameter 1: 1-4: 1 of tank body；Nitrification zone 8 be 5 top of aerating system to tank deck, account for the 1/2-2/3 of 1 height of tank body；
Denitrification zone 8 be 5 lower part of aerating system to tank bottom, account for the 1/3-1/2 of 1 height of tank body.
Tank body 1 and moisture trap 2 are all column.
Water inlet pipe 26 tangentially enters tank body 1 to 30-50 centimetres along the tank skin of tank body 1
Upper 13 quantity >=3 group of reflux nozzle are simultaneously evenly arranged.
The bigger diameter end that gas gathering mask 4 is 30 ° -65 ° is in lower miner diameter end in upper taper, the bigger diameter end Edge Distance of gas gathering mask 4
20-50 centimetres of 1 barrel of tank body.
First cross tee intersects 45 ° of arrangements, the tube wall of the tube wall of the first cross tee and the second cross tee with the second cross tee
Uniform intervals are installed, and inner deflector 37 is placed in 30-100 lis of tank bottom, 30-150 centimetres of height, middle deflector 38 and tank bottom gap
Rice, 30-150 centimetres of height.
Second cross tee is located above the first cross tee, and the second cross tee is apart from 50-150 centimetres of tank bottom, the first cross tee
Apart from 30-80 centimetres of tank bottom.
38 interlaced arrangement of inner deflector 37 and middle deflector；It is meant that the arcuate midway point of inner deflector 37 and the company in the center of circle
Line is misaligned with the arcuate midway point of middle deflector 38 and the line in the center of circle；The arcuate midway point of optimal inner deflector 37 and the center of circle
Line is uniform with the arcuate midway point of middle deflector 38 and the line interval in the center of circle.
The diameter of the miner diameter end of taper time mud plate 18 is identical as 41 diameter of ring-shaped splash guard.
Claims (10)
1. Two-way Cycle short-cut nitrification and denitrification reactor, which is characterized in that including tank body, annular shelves water plate, gas gathering mask, aeration system
System, the first biological rope packing layer, the second biological rope packing layer, third biological rope packing layer, moisture trap, upper return duct, on
Flow back nozzle, lower return duct, the first cross tee, lower reflux nozzle, exhaust pipe, gas collecting tube, taper time mud plate, inclined plate, effluent weir,
Outlet pipe, water inlet pipe, the second cross tee, into sprinkler head, inner deflector, middle deflector and sludge pipe；
Annular shelves water plate is concentrically mounted on tank interior upper end, and gas gathering mask is mounted on the lower section of tank interior annular shelves water plate, exposes
Gas system is mounted on the lower section of tank interior gas gathering mask；Annular region between annular shelves water plate and tank body is settling zone, gas collection
The water surface of cover top to circular portion in annular shelves water plate is upper denitrification zone, and nitrification zone exposes between gas gathering mask and aerating system
It is lower denitrification zone below gas system, lower denitrification zone lower section to the space of tank bottom is water distribution mixed zone；
Upper denitrification zone is equipped with the first biological rope packing layer, and nitrification zone is equipped with the second biological rope packing layer, and lower denitrification zone is equipped with
Third biological rope packing layer；
Moisture trap is mounted on top of the tank, and upper return duct one end is connected to moisture trap bottom, the upper return duct other end
It is connected on the horizontal tube above the first biological rope packing layer, multigroup upper reflux nozzle is installed on horizontal tube；Lower return duct
Upper end is connected to moisture trap bottom, and lower return duct lower end is connected to the first cross tee mounted on water distribution mixed zone, and the 10th
Multigroup lower reflux nozzle is installed on each pipe arm of word pipe；Exhaust pipe one end is connected at the top of moisture trap, and exhaust pipe is another
End is connected in tank body below the water surface；Gas collecting tube lower end is connected to the vertex of a cone of gas gathering mask, and gas collecting tube upper end is repeatedly kicked by horizontal tube
In moisture trap；
The miner diameter end of taper time mud plate is fixedly connected in upper and ring-shaped splash guard lower end, and the bigger diameter end of taper time mud plate is under, cone
It is water passage between the bigger diameter end and tube wall of shape time mud plate, polylith inclined plate is mounted on above the taper time mud plate of settling zone, more
A effluent weir is mounted on above inclined plate, and each effluent weir is flute profile, and each effluent weir is arranged along tank diameter direction, outlet pipe one
End is connected on effluent weir, and the other end is connected to outside tank body；
Water inlet pipe one end is connect with water source, and the water inlet pipe other end is connect with the second cross tee mounted on water distribution mixed zone, and second
It is equipped on each pipe arm of cross tee multigroup into sprinkler head；
Inner deflector and middle deflector are the circular arc type with tank body concentric, inner deflector and middle deflector by water distribution mixed zone
Inward turning confounding, middle rotation confounding and outward turning confounding are divided successively outward from tank body center；
Sludge pipe is mounted on tank base.
2. Two-way Cycle short-cut nitrification and denitrification reactor as described in claim 1, which is characterized in that further include nitrification zone dissolving
Oxygen probe, lower denitrification zone dissolved oxygen probe, upper denitrification zone dissolved oxygen probe, lower regulating valve, upper regulating valve and pressure release are adjusted
Valve；
Lower denitrification zone dissolved oxygen probe is arranged in lower denitrification zone；Nitrification zone dissolved oxygen probe is arranged in nitrification zone；Upper anti-nitre
Change area's dissolved oxygen probe to be arranged in upper denitrification zone；Regulating valve is installed on upper return duct, pressure release tune is installed on exhaust pipe
Valve is saved, lower regulating valve is installed on lower return duct.
3. Two-way Cycle short-cut nitrification and denitrification reactor as claimed in claim 2, which is characterized in that further include control system,
The aerating system, lower denitrification zone dissolved oxygen probe, upper denitrification zone dissolved oxygen probe, is lowered nitrification zone dissolved oxygen probe
Section valve, upper regulating valve and decompression control valve connect realization with control system and automatically control work.
4. the Two-way Cycle short-cut nitrification and denitrification reactor as described in claims 1 to 3 any one, which is characterized in that described
It is upper reflux nozzle jet direction, it is lower reflux nozzle jet direction, into sprinkler head jet direction all same and along tank body
The secant direction of cross section；Secant direction of the jet direction of gas collecting tube upper end horizontal tube along moisture trap cross section.
5. the Two-way Cycle short-cut nitrification and denitrification reactor as described in claims 1 to 3 any one, which is characterized in that first
Lower reflux nozzle is respectively set in the part that each pipe arm of cross tee is in inward turning confounding, middle rotation confounding and outward turning confounding；Second
Outer circulation is respectively set into sprinkler head in the part that each pipe arm of cross tee is in inward turning confounding, middle rotation confounding and outward turning confounding.
6. the Two-way Cycle short-cut nitrification and denitrification reactor as described in claims 1 to 3 any one, which is characterized in that described
Aerating system is that diaphragm aeration equipment or rotation mix any of aerator or aeration tube；Moisture trap bottom is miner diameter end under
Taper.
7. the Two-way Cycle short-cut nitrification and denitrification reactor as described in claims 1 to 3 any one, which is characterized in that described
Inner deflector and the quantity of middle deflector >=2, the arc length of the every inner deflector and middle deflector≤quarter turn,
Each inner deflector is uniformly distributed circumferentially, and each middle deflector is also uniformly dispersed on circumference, inner deflector and middle water conservancy diversion
Plate interlaced arrangement；First cross tee and the second cross tee arranged crosswise, inner deflector are placed in tank bottom, and middle deflector passes through support leg
It is fixed on tank bottom.
8. the Two-way Cycle short-cut nitrification and denitrification reactor as described in claims 1 to 3 any one, which is characterized in that described
Biological rope packing layer is fixed by upper layer and lower layer holder, and every layer of holder is by biological rope filler straight bracket, biological rope filler concentric circles branch
Frame constitutes spider reticulation structure, and biological rope filler is fixed on biological rope filler concentric circles holder.
9. the working method of the Two-way Cycle short-cut nitrification and denitrification reactor as described in claims 1 to 3 any one, feature
It is,
(1) when running, reactor is inoculated with aerobic sludge, and the water outlet of anaerobic system is directly entered tank base by water inlet pipe；
(2) start aerating system, gas, liquid, solid mixture is made to be promoted to tank deck by gas collecting tube in the inside and outside formation density contrast of gas gathering mask
Moisture trap, a part of mixture flows back into the water distribution mixed zone of tank base by lower return duct, and is sprayed from lower reflux
Head projects, and forms rotation mixing, rises through lower denitrification zone, nitrification zone, is promoted the air water to tank deck by gas collecting tube again
Separator forms lower cycle；Another part gas, liquid, solid mixture flows back into upper denitrification zone from upper reflux by upper return duct
Nozzle projects, and forms rotation mixing, sinks to passing through upper denitrification zone, and the reflux seam between gas gathering mask and tank body enters gas collection
Nitrification zone under cover promotes the moisture trap to tank deck by gas collecting tube again, is recycled in formation；Water outlet is by the oblique of settling zone
Rise overflow after plate and enter effluent weir, then next processing unit is discharged by outlet pipe.
10. the working method of the Two-way Cycle short-cut nitrification and denitrification reactor as described in claims 1 to 3 any one, special
Sign is that the working method of the Two-way Cycle short-cut nitrification and denitrification reactor, aerating system is visited according to nitrification zone dissolved oxygen
Head feedback data discontinuous operation or continuous work, nitrification zone dissolved oxygen control 0.8-1.5mg/L, the lower regulating valve on lower return duct
Reflux size is adjusted according to lower denitrification zone dissolved oxygen probe feedback data, lower denitrification zone dissolved oxygen controls 0.2-0.5mg/L,
Upper regulating valve on upper return duct adjusts reflux size according to upper denitrification zone dissolved oxygen probe feedback data, and upper denitrification zone is molten
It solves oxygen and controls 0.2-0.8mg/L, decompression control valve control pressure 0.01-0.03MPa.
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