CN109970199A - Biological denitrificaion couples N2O recycles integrated reactor and its method - Google Patents
Biological denitrificaion couples N2O recycles integrated reactor and its method Download PDFInfo
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- CN109970199A CN109970199A CN201910349698.0A CN201910349698A CN109970199A CN 109970199 A CN109970199 A CN 109970199A CN 201910349698 A CN201910349698 A CN 201910349698A CN 109970199 A CN109970199 A CN 109970199A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 109
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 238000009826 distribution Methods 0.000 claims abstract description 37
- 238000005191 phase separation Methods 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 32
- 239000010802 sludge Substances 0.000 claims abstract description 30
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 238000005273 aeration Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 238000006396 nitration reaction Methods 0.000 claims abstract description 10
- 230000029087 digestion Effects 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 239000002351 wastewater Substances 0.000 claims description 25
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 claims description 23
- 239000000945 filler Substances 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 13
- 241000894006 Bacteria Species 0.000 claims description 12
- 239000012071 phase Substances 0.000 claims description 11
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000005416 organic matter Substances 0.000 claims description 6
- 229910002651 NO3 Inorganic materials 0.000 claims description 5
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 244000005700 microbiome Species 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 230000020477 pH reduction Effects 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 241001149930 Protura <class> Species 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 238000004091 panning Methods 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 238000011081 inoculation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000006227 byproduct Substances 0.000 abstract description 3
- 230000000696 methanogenic effect Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material 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
- C02F3/301—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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/166—Nitrites
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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- 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)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a kind of biological denitrificaions to couple N2O recycles integrated reactor and its method.In reactor, water distribution area is equipped with water inlet distributor and bottom sludge pipe；For reaction zone by three module compositions, the first module is anaerobic digestion methanogenic zone, and top is equipped with three phase separation section and air inlet pipe, and air inlet pipe upper end sets aeration head, and the second module is short distance nitration area, and third module is that short-cut denitrification produces N2The area O, equal built-in biological biofilm composite filling, is sequentially connected in series above the first module；Three-phase separation area successively sets three cylinders in outer from outside to inside, sets out the mouth of a river and overflow weir on the outside of outer barrel section, middle cylinder body section sets spiral guide vane, sludge is set to fall, water (flow) direction up, reaches mud-water separation purpose, inner cylinder section top sets collection port, and side sets out water pipe.The present invention organically combines short-cut nitrification and denitrification denitrogenation and energy gas trapping, converts the energy for the by-product in reaction process and is used, three phase separator can realize efficiently separating for gas, liquid, solid three-phase.
Description
Technical field
The present invention relates to a kind of biological denitrification reactors more particularly to a kind of biological denitrificaion to couple N2O recycling integration is anti-
Answer device and its method.
Background technique
Currently, water eutrophication caused by polluted by nitrogen is extremely serious, lake " wawter bloom " and coastal waters " red tide " happens occasionally,
It is more and more fiery, all conglomeraties such as agricultural, fishery, tourist industry are endangered, and grave danger is constituted to drinking water hygiene and food safety.
The mankind in order to control nitrate pollution with engineering means strengthen Nitrogen Cycling in nitrification and denitrification.In 20th century,
People construct the technical system of biological denitrificaion based on nitrification and denitrification.In recent ten years, with short distance nitre
Change the appearance for a collection of new biological nitrogen removal technology that denitrification process is mark, and greatly enriches the interior of bio-denitrification technology
Hold.
The intrinsic difference of short-cut nitrification and denitrification technology utilization Nitromonas and Nitrosomas on kinetic characteristics controls nitre
Change reaction and only proceeds to NO2 —Stage causes a large amount of NO2 —Accumulation, then with regard to carrying out anti-nitration reaction.But in the anti-nitre of tradition
During changing reaction, by-product N can be generated2O。N2O is a kind of strong greenhouse gas, and causing the potentiality of global warming is about CO2
310 times.It is also a kind of strong oxidizer and potential renewable energy, 1molCH simultaneously4With N2The energy ratio that O burning generates
1molCH4With O2Increase by 30%.Therefore, if the energy gas in waste water treatment system can be trapped flexibly, it will effectively realization water body
Sustainable nitrogen removal and energy regenerating.
Summary of the invention
Object of the present invention is to energy while realizing high-efficiency biological denitrification to organic wastewater in trapping waste water treatment system
Thus source gas provides a kind of biological denitrificaion coupling N2O recycles integrated reactor.
The present invention it is specific the technical solution adopted is as follows:
A kind of biological denitrificaion coupling N2O recycles integrated reactor, which is divided into water distribution from top to bottom
Area, reaction zone and three-phase separation area；
The water distribution area is located at reactor body lower part, and main body is water flow mixed distribution room, and bottom is equipped with sludge pipe, water flow
Tubaeform lower flaring water inlet distributor is set in mixed distribution room, lower flaring water inlet distributor is connected with water inlet pipe, and water distribution mouth
Downward, water distribution area top is connected to reaction zone lower part；
The reaction zone is located in the middle part of reactor body, is divided into the first module, the second module and third module from the bottom to top；
First module lower part is separated by tabula net and water flow mixed distribution room；First module top is equipped with three phase separation section, including divides
Partition, return pipe and exhaust pipe, demarcation plate are abound on cross section, and return pipe and exhaust pipe are all set on demarcation plate, connection
Down space on demarcation plate；Return pipe and exhaust pipe stretch out demarcation plate bottom surface, and the bottom of the tube that flows back is lower than exhaust pipe；Exhaust pipe
Side wall is connected to air inlet pipe, and the top that exhaust pipe is located above demarcation plate sets aeration head；Pacify in second module and third module
It is built-in on filler support to be fixed with bio-film colonization composite filling equipped with filler support；First module, the second module and third mould
Successively vertical series are connected to block；
The three-phase separation area is located at reactor body top, by inner cylinder section, middle cylinder body section and outer barrel section from it is interior to
Outer coaxial nesting forms, and outer barrel section is connected connection with reaction zone；It is sealed at the top of three-phase separation area by end socket, is opened up on end socket
There is collection port；Middle cylinder body section open top is simultaneously lower than end socket inner top surface, and bottom opening position is equipped with anti-mixed cone, prevents the conehead of mixed cone
Upward, prevent the gap that there is annular between mixed cone bottom surface side wall and middle cylinder body section bottom opening；Envelope is fixed at the top of inner cylinder section
On head, bottom is open；Several inclined plates inclined in the same direction are equipped in annular region between inner cylinder section and middle cylinder body section,
Inclined plate is circumferentially uniformly distributed to form the spiral guide vane for making water flow centrifugal rotation along annular region；Overflow weir is set on the outside of outer barrel section,
Inner cylinder section side wall is connected to overflow weir by outlet pipe, and overflow weir lower end is equipped with water outlet.
Preferably, the ratio between water distribution area, reaction zone and height of three-phase separation area are 1:(3~6): (2~5).
Preferably, water flow mixed distribution room top is cylindrical section, lower part is inverted cone segment, the height of inverted cone segment and cylindrical section
The ratio between be (0.8~2.2): 1, the angle of inverted cone segment outer wall and horizontal plane is 40 °~60 °, inverted cone segment top and bottom cross-sectional area it
Than for (1.8~3.2): 1；Water inlet pipe is located at the 3/10-7/10 of cylindrical section height.
Preferably, in reaction zone, the ratio between height of the first module, the second module and third module be 1:(1.5~
2.5): (1~1.5).
Preferably, the ratio between height of return pipe and exhaust pipe is (0.8~1.2) in the first module: 1, exhaust pipe is located at
At the center of demarcation plate, exhaust pipe is vertically connected with air inlet pipe.
Preferably, the bio-film colonization composite filling built in filler support is perpendicular in the second module and third module
Column-shaped arrangement, distance between the column and the column is no more than 50mm, and the both ends of each column bio-film colonization composite filling are by filler support
It is fixed.
Preferably, the ratio between inner cylinder section, cross-sectional area of middle cylinder body section and outer barrel section are 1 in three-phase separation area:
(1.5~3.0): (3.2~5.5), the ratio between height are 1:(1.3~2.0): (1.5~2.2).
Preferably, the collection port is set on the central axes of inner cylinder section, it is connected to the head space of inner cylinder section；It is interior
The top side wall aperture of cylinder section, with the headspace being connected to inside and outside inner cylinder section.
Preferably, the ratio between the inner cylinder section and the cross-sectional area of collection port are (2.5~4.0): 1；Middle cylinder body section
The angle of middle spiral guide vane and horizontal plane is 110 °~150 °, prevents that the ratio between basal diameter and height of mixed cone are (1.5~2.2):
1；The ratio between outer barrel section and the height of overflow weir are (1.5~2.3): 1；Overflow weir is divided into two layers with partition, internal layer and outer layer
The ratio between width is (1.0~1.6): 1, water outlet is set to the bottom end of overflow weir outer layer.
Another object of the present invention is to provide a kind of biological denitrificaion couplings using reactor described in any of the above-described scheme
N2O recovery method, its step are as follows:
By organic wastewater to be processed via water inlet pipe and water inlet distributor input reactor, mix waste water full of water flow
Reaction zone is upwardly into after distributing chamber, sludge precipitates in water flow mixed distribution room and reactor periodically is discharged from sludge pipe；
It is inoculated with anaerobic sludge in the first module of reaction zone in advance, contacted anaerobic sludge with muddy water mixed solution is risen
In journey carry out anaerobic digestion methanogenesis, the organic matter of microorganism panning liquid phase main body, through hydrolysis acidification, hydrogenesis and acetogenesis,
The organic matter in waste water is converted CH by methane phase three phases4, CH4Gas assembles formation under the demarcation plate of three phase separation section
Gas chamber, when gas chamber reaches exhaust pipe bottom position from exhaust pipe be discharged, and the water flow in the first module then along return pipe up
The second module is flowed into, anaerobic sludge settles back into the first module under gravity；It blasts in air inlet pipe and is utilized for Nitrosomas
O2, CH4And O2Enter the second module commonly through aeration head uniform aeration；
It is inoculated with nitrite bacteria in the second module in advance, makes to form energy on the bio-film colonization composite filling in the second module
The biomembrane for enough carrying out short distance nitration effect, when the waste water flowed into from the first module passes through biomembrane, nitrite bacteria absorbs benefit
With the dissolved oxygen and ammonia nitrogen in water, and by ammonium oxidation at nitrite；
It is inoculated with short-cut denitrification in third module in advance and produces N2O bacterium makes the bio-film colonization composite filling in third module
Upper formation is able to carry out the biomembrane of short-cut denitrification effect；When the waste water flowed into from the second module passes through biomembrane, short distance is anti-
Nitrification produces N2Nitrate reductase in waste water is N by O bacterium2O；
The muddy water mixed solution and gas that flow out in third module are drained using the barrier effect of anti-mixed cone, make its into
Enter the region between three-phase separation area China and foreign countries cylinder section and middle cylinder body section, air accumulation is in the lower section of reactor head end socket, mud
Aqueous mixtures enter between middle cylinder body section and inner cylinder section through the upper end overflow of middle cylinder body section, guide muddy water mixing by spiral guide vane
Object rotates to form centrifugal action, realizes mud-water separation, and sludge retention falls in middle cylinder body section barrel, and along barrel, from anti-mixed cone
Reaction zone is returned in annular gap between bottom surface side wall and middle cylinder body section bottom opening, supernatant is from inner cylinder section bottom
Stream, and enter overflow weir via outlet pipe, it is discharged from the water outlet of overflow weir lower end, to complete the biological denitrificaion of waste water；Together
When, N is rich in by collection port collection inside reactor head space storage2The gas of O realizes N2The recycling of O.
The present invention organically combines short-cut nitrification and denitrification denitrogenation and energy gas trapping, by the by-product in reaction process
It is converted into the energy to be used, turn waste into wealth；The a small amount of oxygen supply of segmentation can strengthen the aerobic requirement of short distance nitration effect, save energy
Source；Bio-film colonization composite filling increases the contact area between waste water and biomembrane, improves reactor volume denitrification efficiency；Three-level
Reaction zone series connection, can limit matrix back-mixing, improve treatment effeciency, reduce the occupied area of device；Three phase separator can realize gas,
Liquid, admittedly three-phase efficiently separate.
Detailed description of the invention
Fig. 1 is biological denitrificaion coupling N2O recycles integrated reactor cross-sectional view of the structure；
Fig. 2 is biological denitrificaion coupling N2O recycles integrated reactor structure top view；
Fig. 3 is the installation condition schematic top plan view of anti-mixed cone.
In figure: successively setting water distribution area A, reaction zone B and three-phase separation area C from top to bottom；Specific structure include sludge pipe 1,
Water flow mixed distribution room 2, water inlet distributor 3, water inlet pipe 4, tabula net 5, return pipe 6, exhaust pipe 7, air inlet pipe 8, aeration head 9,
Filler support 10, bio-film colonization composite filling 11, anti-mixed cone 12, inner cylinder section 13, middle cylinder body section 14, outer barrel section 15, spiral
Guide vane 16, water outlet 17, overflow weir 18, outlet pipe 19, collection port 20.
Specific embodiment
The present invention is further elaborated and is illustrated with reference to the accompanying drawings and detailed description.Each implementation in the present invention
The technical characteristic of mode can carry out the corresponding combination under the premise of not conflicting with each other.
As shown in Figure 1, coupling N for a kind of biological denitrificaion provided in a preferred embodiment of the invention2O recycling integration
Reactor, biological denitrificaion couple N2O recycles integrated reactor and can make of PVC transparent piece.The reactor body is from top to bottom
It is divided into water distribution area A, reaction zone B and three-phase separation area C.Its specific structure include sludge pipe 1, water flow mixed distribution room 2, into
Water cloth hydrophone 3, water inlet pipe 4, tabula net 5, return pipe 6, exhaust pipe 7, air inlet pipe 8, aeration head 9, filler support 10, bio-film colonization
Composite filling 11, anti-mixed cone 12, inner cylinder section 13, middle cylinder body section 14, outer barrel section 15, spiral guide vane 16, water outlet 17, overflow
Weir 18, outlet pipe 19, collection port 20.The specific structure in three areas of reactor is described in detail below.
Water distribution area A is located at reactor body lower part, mainly plays water distribution.The main body of water distribution area A is water flow mixing point
Cloth room 2, the bottom of water flow mixed distribution room 2 are equipped with the sludge pipe 1 of controllable opening and closing, outer for carrying out the sludge of bottom deposit
Row.Tubaeform lower flaring water inlet distributor 3, the top water inlet of lower flaring water inlet distributor 3 are set in water flow mixed distribution room 2
It is connected with water inlet pipe 4, water inlet pipe 4 passes through reactor outer wall and is connected with water facilities such as intake pumps.Lower flaring water inlet distributor 3 is in
Water distribution mouth is directed downwardly tubaeform, and water inlet is directed downward.The top water distribution area A is connected to the lower part reaction zone B, but is equipped with one between the two
Block tabula net 5 is separated, and water flow is enable to flow freely, but the impurity of bulk, sludge can suitably be stopped.
Reaction zone B is located in the middle part of reactor body, is divided into the first module I, the second module ii and third module from the bottom to top
III, successively vertical series are connected to by the first module I, the second module ii and third module ii I.First module I lower part passes through tabula net
5 separate with water flow mixed distribution room 2.First module I functions as anaerobic digestion methanogenic zone, wherein needing to be inoculated with anaerobism
Acidification, hydrogenesis and acetogenesis, the processing of methane phase three phases is hydrolyzed to waste water in sludge.Second module ii is short distance nitration area,
It is inoculated with nitrite bacteria, using dissolved oxygen and ammonia nitrogen, and by ammonium oxidation at nitrite.Third module ii I is the anti-nitre of short distance
Change area, inoculation short-cut denitrification produces N2Nitrate reductase in waste water is N by O flora2O.Described short distance is anti-in the present invention
Nitrification produces N2O flora, can be any can produce N2The short-cut denitrification bacterium of O.
First module I top is equipped with three phase separation section, and the effect of three phase separation section is to play the role of certain three phase separation,
It realizes that structure includes demarcation plate, return pipe 6 and exhaust pipe 7, and demarcation plate is abound on cross section, and return pipe 6 and exhaust pipe 7 are equal
Be set on demarcation plate, demarcation plate other than aperture at return pipe 6 and 7 liang of exhaust pipe remaining be closed, but return pipe 6
It is open with 7 both ends of exhaust pipe, is connected to down space on demarcation plate.Demarcation plate bottom is stretched out in the lower part of return pipe 6 and exhaust pipe 7
Face certain distance, and the bottom of return pipe 6 should be guaranteed that lower than exhaust pipe 7.Under this structure, it can be progressively enriched with below demarcation plate
Gas, due to demarcation plate be other than return pipe 6 and exhaust pipe 7 it is closed, with reaction carries out air room height can be by
It is cumulative big, until reaching 7 bottom of exhaust pipe.After reaching 7 bottom position of exhaust pipe, gas can gradually be discharged from exhaust pipe 7, into
Enter above demarcation plate.And 6 bottom of return pipe is always situated in below liquid level, therefore water flow can be flowed up normally, muddy water
Mixture is separated in gas-liquid interface, can also further be separated during flowing along return pipe 6.Due to the second module ii
In short distance nitration effect need to consume certain oxygen, therefore also need to be connected to an air inlet pipe 8 in 7 side wall of exhaust pipe, arrange
The top that tracheae 7 is located above demarcation plate sets aeration head 9.A small amount of O is passed through in air inlet pipe 82It is utilized for Nitrosomas, CH4And O2Altogether
Enter the second module ii with by 9 uniform aeration of aeration head.
The structure type of second module ii and third module ii I are essentially identical, and filler support 10 is mounted in module, is filled out
It is built-in on material bracket 10 to be fixed with bio-film colonization composite filling 11.Bio-film colonization composite filling 11 is that the bunchiness of column-shaped arrangement is filled out
Material, filling kind is unlimited, subject to microorganism growth and biofilm.Between second module ii and third module ii I can between
At a certain distance, enter short-cut denitrification area to reduce the oxygen in short distance nitration area.
Three-phase separation area C is located at reactor body top, for carrying out three phase separation, collects energy gas.Three phase separation
The main body of area C nested is formed by inner cylinder section 13, middle cylinder body section 14 and outer barrel section 15 are coaxial from inside to outside.14 He of middle cylinder body section
Outer barrel section 15 has the cylindrical section on top and the inverted cone segment of lower part to be linked to be, and 15 lower part of outer barrel section is connected connection with reaction zone B.
It is sealed at the top of the outer barrel section 15 of three-phase separation area C by end socket, end socket center offers collection port 20.Middle cylinder body section 14 can lead to
Support rod to be crossed to be fixed on 15 inner wall of outer barrel section, 14 open top of middle cylinder body section is simultaneously lower than end socket inner top surface certain distance, with
Conducive to mud mixture overflow.The inverted cone segment bottom of 14 lower part of middle cylinder body section has an opening, is equipped with anti-mixed cone in the position
12.The effect of anti-mixed cone 12 is to prevent the mud mixture in reaction zone B to be directly entered middle cylinder body section 14, but can make middle cylinder
Precipitating sludge in body section 14 returns to reaction zone B.12 tapered structures of anti-mixed cone, conehead upward, prevent 12 bottom surfaces of mixed cone
There is the gap of annular between 14 bottom opening of side wall and middle cylinder body section, as shown in figure 3, the sludge of precipitating can pass through the annular
Gap returns to reaction zone B, but the water flow of lower section is then because resistance is excessive without entering in middle cylinder body section 14 from the gap
Chamber.In addition, being fixed on end socket at the top of inner cylinder section 13, bottom is open, and the supernatant in middle cylinder body section 14 is entered by bottom
In inner cylinder section 13.The mud-water separation function of three-phase separation area C is realized by spiral guide vane 16, in interior 13 He of cylinder section
There is an annular region between middle cylinder body section 14, several inclined plates inclined in the same direction are equipped in the annular region, tiltedly
Plate is circumferentially uniformly distributed to form the spiral guide vane 16 for making water flow centrifugal rotation along annular region.When therefrom 14 top overflow of cylinder section
When the mud mixture of entrance flows to inclined plate surface, since the presence of inclined plate can flow downward along inclined plate surface, and then in cylinder
The centrifugal force of body interior shape rotation, so that the mud granule in mud mixture is thrown on barrel under the action of the centrifugal force.
And the bottom inlet of inner cylinder section 13 is positioned at 14 center of middle cylinder body section, therefore supernatant can be discharged from there.And this is anti-
Answering the energy gas in device to collect is realized by collection port 20, since gas is concentrated in 13 top sky of inner cylinder section
Between, the headspace being also concentrated between inner cylinder section 13 and outer barrel section 15, therefore collect port 20 in the present embodiment and be arranged
In on the central axes of inner cylinder section 13, it is connected to the head space of inner cylinder section 13.And the top side wall aperture of inner cylinder section 13, with even
Headspace inside and outside logical inner cylinder section 13, can be by the gas at top inside and outside inner cylinder section 13 when being evacuated by collecting port 20
Body is all collected.Contain a large amount of CH in the gas of top aggregation4And N2O can be used as energy gas.
In addition, setting overflow weir 18 on the outside of outer barrel section 15,13 side wall of inner cylinder section is connected to overflow weir 18 by outlet pipe 19,
18 lower end of overflow weir is equipped with water outlet 17.In the present embodiment, overflow weir 18 is divided into two layers with partition, including internal layer and outer layer,
Outlet pipe 19 is connected to internal layer, and water outlet 17 is set to the bottom end of 18 outer layer of overflow weir.The side wall that divider height is less than overflow weir 18 is high
Degree, therefore the water flow of internal layer further overflow can enter outer layer, so that further progress settles.
In the present embodiment, the parameter of each component preferably designs as follows:
The ratio between height of water distribution area A, reaction zone B and three-phase separation area C is 1:(3~6): (2~5).Water flow mixed distribution
2 top of room is cylindrical section, and lower part is inverted cone segment, and the ratio between height of inverted cone segment and cylindrical section is (0.8~2.2): 1, outside inverted cone segment
The angle of wall and horizontal plane is 40 °~60 °, and the ratio between inverted cone segment top and bottom cross-sectional area is (1.8~3.2): 1；Water inlet pipe 4 is located at
At the 3/10-7/10 of cylindrical section height.In reaction zone B, the ratio between the first module I, the second module ii and height of third module ii I
For 1:(1.5~2.5): (1~1.5).In first module I, the ratio between height of return pipe 6 and exhaust pipe 7 is (0.8~1.2): 1,
Exhaust pipe 7 is located at the center of demarcation plate, and exhaust pipe 7 is vertically connected with air inlet pipe 8.In second module ii and third module ii I,
The perpendicular column-shaped arrangement of bio-film colonization composite filling 11 built in filler support 10, distance between the column and the column are no more than
The both ends of 50mm, each column bio-film colonization composite filling 11 are fixed by filler support 10.In the C of three-phase separation area, inner cylinder section 13,
The ratio between cross-sectional area of middle cylinder body section 14 and outer barrel section 15 is 1:(1.5~3.0): (3.2~5.5), the ratio between height are 1:
(1.3~2.0): (1.5~2.2).The ratio between inner cylinder section 13 and the cross-sectional area of collection port 20 are (2.5~4.0): 1；Middle cylinder body
The angle of spiral guide vane 16 and horizontal plane is 110 °~150 ° in section 14, prevents that the ratio between basal diameter and height of mixed cone 12 are (1.5
~2.2): 1；The ratio between outer barrel section 15 and the height of overflow weir are (1.5~2.3): 1；The internal layer of overflow weir 18 and the width of outer layer
The ratio between degree is (1.0~1.6): 1.
Based on above-mentioned reactor, the present invention also provides biological denitrificaions to couple N2O recovery method, its step are as follows:
1, fill waste water via 3 input reactor of water inlet pipe 4 and water inlet distributor high concentrated organic wastewater to be processed
Reaction zone B is upwardly into behind full water stream mixed distribution room 2, sludge precipitates in water flow mixed distribution room 2 and periodically from sludge pipe 1
Reactor is discharged.
2, it is inoculated with anaerobic sludge in the first module I of reaction zone B in advance, connects anaerobic sludge with muddy water mixed solution is risen
Anaerobic digestion methanogenesis is carried out during touching, the organic matter of microorganism panning liquid phase main body through hydrolysis acidification, produces hydrogen production second
Acid, methane phase three phases, convert CH for the organic matter in waste water4, CH4Gas is assembled under the demarcation plate of three phase separation section
Gas chamber is formed, is discharged when gas chamber reaches 7 bottom position of exhaust pipe from exhaust pipe 7, and the water flow in the first module I is then along reflux
Pipe 6 up flows into the second module ii, and anaerobic sludge settles back into the first module I under gravity；It blasts in air inlet pipe 8 for Asia
The O that Nitromonas utilizes2, CH4And O2Enter the second module ii commonly through 9 uniform aeration of aeration head；
3, it is inoculated with nitrite bacteria in the second module ii in advance, makes the bio-film colonization composite filling 11 in the second module ii
Upper formation is able to carry out the biomembrane of short distance nitration effect, and when the waste water flowed into from the first module I passes through biomembrane, nitrous acid is thin
Dissolved oxygen and ammonia nitrogen in water is absorbed and utilized in bacterium, and by ammonium oxidation at nitrite；
It is inoculated with short-cut denitrification in third module ii I in advance and produces N2O bacterium makes the bio-film colonization group in third module ii I
Close the biomembrane for being formed on filler 11 and being able to carry out short-cut denitrification effect；The waste water flowed into from the second module ii passes through biomembrane
When, short-cut denitrification produces N2Nitrate reductase in waste water is N by O bacterium2O；
The muddy water mixed solution and gas that flow out in third module ii I are drained using the barrier effect of anti-mixed cone 12,
The region between the three-phase separation area China and foreign countries C cylinder section 15 and middle cylinder body section 15 is made it into, air accumulation is sealed in reactor head
The lower section of head, mud mixture enter between middle cylinder body section 15 and inner cylinder section 13 through the 15 upper end overflow of middle cylinder body section, pass through spiral shell
Rotation guide vane 16 guides mud mixture to rotate to form centrifugal action, realizes mud-water separation, sludge retention in 15 barrel of middle cylinder body section,
And fall along barrel, reaction zone is returned from the annular gap between 12 bottom surface side walls of anti-mixed cone and 14 bottom opening of middle cylinder body section
B, supernatant enter overflow weir 18 from 13 bottom of inner cylinder section upstream, and via outlet pipe 19, the water outlet from 18 lower end of overflow weir
Mouth 17 is discharged, to complete the biological denitrificaion of waste water；Meanwhile being rich in for inside reactor head space storage is collected by collection port 20
N2The gas of O realizes N2The recycling of O.Certainly CH can also be contained in the gas collected4And other gases.
In the present invention energy gas collect key be reaction zone B three phase separation section and three-phase separation area C it is good
Operation, the key of high-efficiency biological denitrification are O in air inlet pipe 82Inlet, the oxygen demand of short distance nitration bacterium should be suitable for,
But it cannot excessively influence subsequent short-cut denitrification processing.
Above-mentioned embodiment is only a preferred solution of the present invention, so it is not intended to limiting the invention.Have
The those of ordinary skill for closing technical field can also make various changes without departing from the spirit and scope of the present invention
Change and modification.Therefore all mode technical solutions obtained for taking equivalent substitution or equivalent transformation, all fall within guarantor of the invention
It protects in range.
Claims (10)
1. a kind of biological denitrificaion couples N2O recycles integrated reactor, it is characterised in that: reactor body successively divides from top to bottom
For water distribution area (A), reaction zone (B) and three-phase separation area (C)；
The water distribution area (A) is located at reactor body lower part, and main body is water flow mixed distribution room (2), and bottom is equipped with sludge pipe
(1), set tubaeform lower flaring water inlet distributor (3) in water flow mixed distribution room (2), lower flaring water inlet distributor (3) and into
Water pipe (4) is connected, and water distribution mouth down, the water distribution area top (A) are connected to the lower part reaction zone (B)；
The reaction zone (B) is located in the middle part of reactor body, is divided into the first module (I), the second module (II) and the from the bottom to top
Three modules (III)；The first module lower part (I) is separated by tabula net (5) and water flow mixed distribution room (2)；In first module (I)
Portion is equipped with three phase separation section, including demarcation plate, return pipe (6) and exhaust pipe (7), and demarcation plate is abound on cross section, return pipe
(6) it is all set on demarcation plate with exhaust pipe (7), is connected to down space on demarcation plate；Return pipe (6) and exhaust pipe (7) stretch out
Demarcation plate bottom surface, and return pipe (6) bottom is lower than exhaust pipe (7)；Exhaust pipe (7) side wall is connected to air inlet pipe (8), exhaust pipe
(7) it is located at the top above demarcation plate and sets aeration head (9)；Filler is mounted in second module (II) and third module (III)
Bracket (10), it is built-in on filler support (10) to be fixed with bio-film colonization composite filling (11)；First module (I), the second module
(II) successively vertical series are connected to third module (III)；
The three-phase separation area (C) is located at reactor body top, by inner cylinder section (13), middle cylinder body section (14) and outer barrel section
(15) coaxial nesting forms from inside to outside, and outer barrel section (15) is connected connection with reaction zone (B)；It is logical at the top of three-phase separation area (C)
End socket sealing is crossed, offers collection port (20) on end socket；Middle cylinder body section (14) open top is simultaneously lower than end socket inner top surface, and bottom is opened
Mouth position is equipped with anti-mix and bores (12), and upward, anti-mix bores (12) bottom surface side wall and middle cylinder body section (14) bottom to the conehead of anti-mixed cone (12)
There is the gap of annular between portion's opening；It is fixed on end socket at the top of inner cylinder section (13), bottom is open；Inner cylinder section (13) and
Several inclined plates inclined in the same direction are equipped in annular region between middle cylinder body section (14), inclined plate is circumferentially equal along annular region
Even distribution forms the spiral guide vane (16) for making water flow centrifugal rotation；Overflow weir (18), inner cylinder section are set on the outside of outer barrel section (15)
(13) side wall is equipped with water outlet (17) by outlet pipe (19) connection overflow weir (18), overflow weir (18) lower end.
2. a kind of biological denitrificaion according to claim 1 couples N2O recycles integrated reactor, it is characterised in that: water distribution area
(A), the ratio between height of reaction zone (B) and three-phase separation area (C) is 1:(3~6): (2~5).
3. a kind of biological denitrificaion according to claim 1 couples N2O recycles integrated reactor, it is characterised in that: water flow is mixed
Conjunction distributing chamber (2) top is cylindrical section, and lower part is inverted cone segment, and the ratio between inverted cone segment and the height of cylindrical section are (0.8~2.2): 1,
The angle of inverted cone segment outer wall and horizontal plane is 40 °~60 °, and the ratio between inverted cone segment top and bottom cross-sectional area is (1.8~3.2): 1；Into
Water pipe (4) is located at the 3/10-7/10 of cylindrical section height.
4. a kind of biological denitrificaion according to claim 1 couples N2O recycles integrated reactor, it is characterised in that: reaction zone
(B) in, the ratio between height of the first module (I), the second module (II) and third module (III) is 1:(1.5~2.5): (1~
1.5)。
5. a kind of biological denitrificaion according to claim 1 couples N2O recycles integrated reactor, it is characterised in that: the first mould
In block (I), the ratio between height of return pipe (6) and exhaust pipe (7) is (0.8~1.2): 1, exhaust pipe (7) is located in demarcation plate
At the heart, exhaust pipe (7) is vertically connected with air inlet pipe (8).
6. a kind of biological denitrificaion according to claim 1 couples N2O recycles integrated reactor, it is characterised in that: the second mould
In block (II) and third module (III), the perpendicular column-shaped of bio-film colonization composite filling (11) built in filler support (10)
Arrangement, distance between the column and the column are no more than 50mm, and the both ends of each column bio-film colonization composite filling (11) are by filler support
(10) fixed.
7. a kind of biological denitrificaion according to claim 1 couples N2O recycles integrated reactor, it is characterised in that: three-phase separate
From in area (C), inner cylinder section (13), middle cylinder body section (14) and outer barrel section (15) the ratio between cross-sectional area for 1:(1.5~
3.0): (3.2~5.5), the ratio between height are 1:(1.3~2.0): (1.5~2.2).
8. a kind of biological denitrificaion according to claim 1 couples N2O recycles integrated reactor, it is characterised in that: described
Collection port (20) is set on the central axes of inner cylinder section (13), is connected to the head space of inner cylinder section (13)；Inner cylinder section (13)
Top side wall aperture, with the headspace being connected to inside and outside inner cylinder section (13).
9. a kind of biological denitrificaion according to claim 1 couples N2O recycles integrated reactor, it is characterised in that: described
The ratio between cross-sectional area of inner cylinder section (13) and collection port (20) is (2.5~4.0): 1；Spiral guide vane in middle cylinder body section (14)
(16) it is 110 °~150 ° with the angle of horizontal plane, prevents that the ratio between basal diameter and height of mixed cone (12) are (1.5~2.2): 1；
The ratio between outer barrel section (15) and the height of overflow weir are (1.5~2.3): 1；Overflow weir (18) is divided into two layers with partition, internal layer with
The ratio between width of outer layer is (1.0~1.6): 1, water outlet (17) is set to the bottom end of overflow weir (18) outer layer.
10. a kind of biological denitrificaion using the reactor as described in claim 1~9 is any couples N2O recovery method, feature exist
In steps are as follows:
By organic wastewater to be processed via water inlet pipe (4) and water inlet distributor (3) input reactor, keep waste water mixed full of water flow
It is upwardly into reaction zone (B) after closing distributing chamber (2), sludge precipitates in water flow mixed distribution room (2) and periodically from sludge pipe (1)
Reactor is discharged；
Anaerobic sludge is inoculated in the first module (I) of reaction zone (B) in advance, contacts anaerobic sludge with muddy water mixed solution is risen
Anaerobic digestion methanogenesis is carried out in the process, and the organic matter of microorganism panning liquid phase main body through hydrolysis acidification, produces hydrogen production second
Acid, methane phase three phases, convert CH for the organic matter in waste water4, CH4Gas is assembled under the demarcation plate of three phase separation section
Gas chamber is formed, is discharged when gas chamber reaches exhaust pipe (7) bottom position from exhaust pipe (7), and the water flow in the first module (I) is then
It is up flowed into the second module (II) along return pipe (6), anaerobic sludge settles back into the first module (I) under gravity；Air inlet
The O utilized for Nitrosomas is blasted in pipe (8)2, CH4And O2Enter the second module commonly through aeration head (9) uniform aeration
(II)；
Nitrite bacteria is inoculated in the second module (II) in advance, makes the bio-film colonization composite filling (11) in the second module (II)
Upper formation is able to carry out the biomembrane of short distance nitration effect, when the waste water flowed into from the first module (I) passes through biomembrane, nitrous acid
Dissolved oxygen and ammonia nitrogen in water is absorbed and utilized in bacterium, and by ammonium oxidation at nitrite；
Inoculation short-cut denitrification produces N in third module (III) in advance2O bacterium combines the bio-film colonization in third module (III)
The biomembrane for being able to carry out short-cut denitrification effect is formed on filler (11)；The waste water flowed into from the second module (II) is by biology
When film, short-cut denitrification produces N2Nitrate reductase in waste water is N by O bacterium2O；
The muddy water mixed solution and gas that flow out in third module (III) are drained using the barrier effect of anti-mixed cone (12),
The region between three-phase separation area (C) China and foreign countries' cylinder section (15) and middle cylinder body section (15) is made it into, air accumulation is in reactor
The lower section of top end socket, mud mixture enter middle cylinder body section (15) and inner cylinder section (13) through middle cylinder body section (15) upper end overflow
Between, it guides mud mixture to rotate to form centrifugal action by spiral guide vane (16), realizes mud-water separation, sludge retention is in
Cylinder section (15) barrel, and fall along barrel, between anti-mixed cone (12) bottom surface side wall and middle cylinder body section (14) bottom opening
Reaction zone (B) is returned in annular gap, supernatant enters overflow from inner cylinder section (13) bottom upstream, and via outlet pipe (19)
Weir (18) is discharged, to complete the biological denitrificaion of waste water from the water outlet (17) of overflow weir (18) lower end；Meanwhile passing through gas collection
Mouth (20) collection inside reactor head space storage is rich in N2The gas of O realizes N2The recycling of O.
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