CN106746384A - The device and method of the vertical multi cycle Process for Treating Municipal of pulling flow type - Google Patents
The device and method of the vertical multi cycle Process for Treating Municipal of pulling flow type Download PDFInfo
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- CN106746384A CN106746384A CN201710207740.6A CN201710207740A CN106746384A CN 106746384 A CN106746384 A CN 106746384A CN 201710207740 A CN201710207740 A CN 201710207740A CN 106746384 A CN106746384 A CN 106746384A
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- 238000000034 method Methods 0.000 title claims abstract description 52
- 230000008569 process Effects 0.000 title claims abstract description 35
- 238000005273 aeration Methods 0.000 claims abstract description 107
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000010865 sewage Substances 0.000 claims abstract description 40
- 238000004062 sedimentation Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 51
- 239000001301 oxygen Substances 0.000 claims description 51
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 47
- 239000010802 sludge Substances 0.000 claims description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 230000033001 locomotion Effects 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 244000005700 microbiome Species 0.000 claims description 10
- 239000005416 organic matter Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 238000010992 reflux Methods 0.000 claims description 9
- 239000002351 wastewater Substances 0.000 claims description 9
- 230000004087 circulation Effects 0.000 claims description 8
- 239000000523 sample Substances 0.000 claims description 8
- 206010058490 Hyperoxia Diseases 0.000 claims description 6
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 6
- 238000006731 degradation reaction Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 230000000222 hyperoxic effect Effects 0.000 claims description 6
- 230000015556 catabolic process Effects 0.000 claims description 5
- 238000006396 nitration reaction Methods 0.000 claims description 4
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 claims description 3
- 150000001413 amino acids Chemical class 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 150000004676 glycans Chemical class 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920001282 polysaccharide Polymers 0.000 claims description 3
- 239000005017 polysaccharide Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 241001148471 unidentified anaerobic bacterium Species 0.000 claims description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 2
- 206010021143 Hypoxia Diseases 0.000 claims description 2
- 229960004424 carbon dioxide Drugs 0.000 claims description 2
- 229910002090 carbon oxide Inorganic materials 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 208000018875 hypoxemia Diseases 0.000 claims 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000005276 aerator Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000005112 continuous flow technique Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000000378 dietary effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/18—PO4-P
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/38—Gas flow rate
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Hydrology & Water Resources (AREA)
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- Water Supply & Treatment (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The device and method of the vertical multi cycle Process for Treating Municipal of pulling flow type of the present invention, including the city domestic sewage water tank being sequentially connected, the vertical multi cycle aeration tank of pulling flow type and vertical sedimentation basin, the city domestic sewage water outlet of water tank is connected by pipeline with the water inlet of the vertical side bottom of multi cycle aeration tank one of pulling flow type, intake pump is provided with the pipeline, the vertical multi cycle aeration tank opposite side top of pulling flow type is provided with the first downflow weir, first downflow weir is connected with the water inlet of vertical sedimentation basin, the vertical sedimentation basin top is provided with the second downflow weir.The present invention can determine loop number and reaction tank highly, flexible design according to the actual demand of engineering；The space proportion of anaerobic zone and anoxic zone is improve, the removal of hardly degraded organic substance is more beneficial for, while creating more denitrification environment, it is obvious to improve denitrification ability effect for big yield low carbon-nitrogen ratio sewage.
Description
Technical field
The invention belongs to technical field of biological sewage treatment, and in particular to a kind of vertical multi cycle PROCESS FOR TREATMENT city of pulling flow type
The device of city's sewage, the invention further relates to a kind of method of the vertical multi cycle Process for Treating Municipal of pulling flow type.
Background technology
With social development and the quickening of urbanization process, urban wastewater discharge increasingly increases.According to statistics, only 2014
First quarter China's urban wastewater treatment firm is accumulative to build up 3622, and day processes sewage ability 1.53 × 108m3, operating load rate reaches
79.9%.And municipal sewage treatment is a high energy-consuming industry, data display municipal sewage plant's average current drain value reaches
0.285kWh/m3, total electricity consumption occupies the 60% of Sewage Plant operating cost, so reduce sewage disposal energy consumption can effectively subtract
The operation cost of few sewage treatment plant, improves the utilization ratio of fund.
Municipal sewage treatment both domestic and external mainly uses activated sludge process, sewage disposal high for nitrogen and phosphorus content in sewage
Factory's majority uses A2/ O techniques, its core is anaerobic reation pool, hypoxia response pond, aerobic reaction tank, and floor space is larger.Wherein
Aerobic reaction tank needs substantial amounts of aeration, for the organic matter in aerobic degradation water.According to statistics, core life in Sewage Plant
Change the 50%-70% that processing unit power consumption accounts for whole technique, be concentrated mainly in air blower, agitator and interior external reflux pump,
Interior external reflux pump effect herein is backflow nitrification liquid and sludge.In activated sludge process, aeration energy consumption accounts for total energy consumption
55.6%.
The flow of Traditional continuous flow Process for Treating Municipal is as shown in figure 1, municipal sewage passes through constant current from raw water water tank 1
Sewage stabilization is sent into dischargeable capacity in traditional reaction tank 1 of 138.6L, air compressor 2.3, rotor to be connected outside it by pump 2.1
Flowmeter 2.4；Aeration tank water outlet enters vertical sedimentation basin 3 by difference in height, and water outlet is flowed out through downflow weir 3.1 after precipitation, sinks
Mud discharging mouth 3.2 is provided with the pond of shallow lake, sludge is back near the aeration tube of aeration tank through reflux pump 3.3.
The purpose of aeration is the microorganism in aeration tank in dissolved oxygen, organic matter and activated sludge is sufficiently mixed contact,
So as to the degradation process for accelerating pollutant improves sewage treating efficiency.Using horizontally disposed, aerator point more than traditional aeration mode
Aeration tank bottom is dispersed in, bubble is begun to ramp up by aerator outlet, and lifting height is the distance of aerator and the water surface, distance phase
To shorter, the limited time with waste water.Therefore there is oxygen transfer efficiency relatively low, sewage is insufficient with bubble contact to wait limit
System.Due to the limitation of aerator position, aeration outlet has the distance of 15-20cm with aeration tank bottom, and current cannot have influence on
Aeration tank bottom, thus results in the deposition of aeration tank bottom, utilization rate reduction.
With our people's growth in the living standard, the change of dietary structure, the groups of contaminants of municipal sewage into and ratio
Also there is corresponding change, nitrogen content increases, and occurs in that the situation of low ratio of carbon to ammonium, and traditional biological denitrification process is played to denitrogenation of waste water
Important function, but still suffer from many problems.Substantial amounts of oxygen need to be consumed as ammonia nitrogen is nitrified completely, power consumption is increased, to low
The waste water of carbon-nitrogen ratio, also needs additional carbon, and water outlet is not up to standard.
The content of the invention
To achieve the above object, the present invention provides a kind of device of the vertical multi cycle Process for Treating Municipal of pulling flow type,
Solve that reactor denitrification ability in the prior art declines, hardly degraded organic substance can not be removed, power consumption is big, water outlet does not reach
Target problem.
Present invention also offers a kind of method of the vertical multi cycle Process for Treating Municipal of pulling flow type.
The technical solution adopted in the present invention is, the device of the vertical multi cycle Process for Treating Municipal of pulling flow type, including
City domestic sewage water tank, the vertical multi cycle aeration tank of pulling flow type and the vertical sedimentation basin being sequentially connected, the urban life
Sewage water outlet of water tank is connected by pipeline with the water inlet of the vertical side bottom of multi cycle aeration tank one of pulling flow type, on the pipeline
Intake pump is provided with, the vertical multi cycle aeration tank opposite side top of pulling flow type is provided with the first downflow weir, and described first overflows
Stream weir connects with the water inlet of vertical sedimentation basin, and the vertical sedimentation basin top is provided with the second downflow weir, the perpendicular stream
Formula sedimentation basin bottom is provided with mud discharging mouth, and the vertical sedimentation basin bottom is by sludge reflux pump and the vertical multi cycle of pulling flow type
Aeration tank water inlet side connects, the vertical multi cycle aeration tank water inlet side of pulling flow type is horizontally disposed have 2 or 2 with
On aeration tube, be extended down to outside multiple aeration tubes and air pump be connected with by gas flowmeter, the pulling flow type vertically more to follow
Being horizontally disposed with from top to bottom inside ring aeration tank has polylith deflector, each described deflector one end and the vertical multi cycle of pulling flow type
Aeration tank inwall is engaged and the other end has space, the sky of the adjacent deflector away from the vertical multi cycle aeration tank inwall of pulling flow type
Gap institute is in opposite direction at one end.
It is of the invention to be further characterized in that,
The ratio wide and high in the space between each described deflector and the vertical multi cycle aeration tank inwall of pulling flow type is
2:1。
The side of first downflow weir is provided with temperature and dissolved oxygen probe, and the temperature and dissolved oxygen probe are inserted into
In space between the top deflector and the vertical multi cycle aeration tank inwall of pulling flow type.
Another technical scheme of the present invention is, the side of the vertical multi cycle Process for Treating Municipal of pulling flow type
Method, specifically follows the steps below：
Step 1, configures sludge
The vertical multi cycle aeration tank sludge source of pulling flow type is prepared sludge concentration and is existed in municipal sewage plant aeration tank
The sludge of 3000-4000mg/L is inoculated with, and vexed exposure starts water inlet after 2 days, inflow gradually increases daily makes microorganism gradually
It is applicable, time was at 1 week or so；
Step 2, aeration prepares
Continuous stream operational parameter control, sludge concentration is 3000-4000mg/L in the vertical multi cycle aeration tank of pulling flow type, together
When start continuous aeration, in 2.0-3.0mg/L, hydraulic detention time is 6-12h to Dissolved Oxygen concentration Control, and return sludge ratio is
50%-100%；
Step 3, aeration process
After air enters the vertical multi cycle aeration tank of pulling flow type, it is divided into minute bubbles to begin to ramp up by aeration tube, runs into most
The deflector stop of lower section is moved along deflector, and now bubbles entrain liquid rises, and is blocked back reflection and moves downward, and then
Formation is circulated, and liquid forms hyperoxia area with the abundant region of bubble contact, and center and lower area are low-oxygen area；Bubble motion
Vertically rise after to bottom deflector end, stopped by middle deflector, equally along middle water conservancy diversion
Plate is moved, therefore forms the low-oxygen area of the of a relatively high Zhong Yangquji centers of peripheral dissolved oxygen concentration and bottom；Last gas
Enter next piece of deflector from middle deflector end, with the increase of dividing plate quantity, bubble motion prolongs Cheng Zengchang, while shape
Into the different race way of multiple dissolved oxygen contents；
Due to gradually being reduced with waste water, dissolved oxygen content in bubble uphill process, when the vertical multi cycle of pulling flow type exposes
Gas pond is reached after 4-5 circulations, and the 5th compartment core dissolved oxygen can reach below 0.5mg/L, with this understanding microorganism
Into anaerobic state, hardly degraded organic substance will resolve into degradable polysaccharide and amino acid by anaerobic bacteria under anaerobic, point
Solve the easily biodegradable organicses for completing to be removed in the anoxic zone for entering circulation periphery, while anaerobic condition can make nitrate nitrogen by anti-nitre
Chemical conversion nitrogen, finally overflows the water surface with bubble, reaches the removed purpose of nitrogen in sewage；
During above-mentioned bubble motion, the vertical multi cycle aeration tank water inlet water inlet of pulling flow type, current are in plug-flow form
To the vertical multi cycle aeration tank end movement of pulling flow type, therefore, bubble is subject to the induced effect of liquid plug-flow in the horizontal plane,
Stopped by deflector that to form upper and lower both direction circulates effect on tangent plane, the collective effect in this both direction
Under, constitute multiple conversion zones；
Between bottom deflector and the vertical multi cycle aeration tank base plate of pulling flow type dissolved oxygen concentration from center to the periphery
Gradually rise, organic matter degradation occurs mainly in hyperoxia region, dioxy directly can be herein oxidized to for small organic molecule
Change carbon and water；For molecular structure complexity, being difficult to biodegradable organic matter can be in middle oxygen or low oxygen area completion acidifying water
This is transported to after solution, oxidizing process is continued to complete；Anoxic and the presence in middle oxygen region, for microorganism denitrification is provided favorably
Condition, nitrate nitrogen and nitrite nitrogen can be removed in anoxic and middle oxygen region by denitrification, and vertical multi cycle plug-flow technique is carried
Aeration tank synchronous nitration and denitrification efficiency high.
The beneficial effects of the invention are as follows：
(1) vertical multi cycle aeration tank can determine loop number and reaction tank highly according to the actual demand of engineering, design
Flexibly, it is to avoid excessive infrastructure investment；Multi cycle structure substantially prolongs move distance of the bubble in sewage simultaneously,
Residence time of the sewage in reaction tank also increases, and improves the utilization rate more than 10% of oxygen, and organic removal rate is improved
10%-15%, ammonia nitrogen removal frank improves 10%-20%, reduces aeration time 20%-30%.
(2) due to increased polylith deflector, the path of oxygen diffusion motion is limited, therefore creates bigger anaerobism
And anaerobic environment, the hardly degraded organic substance in sewage is hydrolyzed into degradable substance in anaerobic environment, circulated by top
Move to anaerobic environment and be further decomposed as degradable small-molecule substance, it is most aerobic to bottom through circulating for both sides afterwards
Environment is decomposed removal.Waste water for carbon-nitrogen ratio less than 5, because organic matter is largely removed in aerobic zone, therefore anti-nitre
Change carbon source not enough, it is difficult to carry out.This technique expands anaerobic/anoxic space by reasonable distribution LDO area of space volume high
Region, creates advantageously in the environment of nitration denitrification, and hardly degraded organic substance in water is divided by anaerobic/anoxic environment
Solution, directly as denitrifying carbon source, ringing conveying carbon source is relative to pass to denitrification process in addition for the small-molecule substance of generation
System reactor substantially increases denitrification ability, and denitrification ability improves 30% or so by comparison.
(3) without interior circulation, base sludge is impacted vertical multi cycle reaction tank by water circulation flowing, it is impossible to deposited to
Dead band is formed on reaction tank bottom, improves aeration tank effective rate of utilization 20% or so.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart of Traditional continuous flow Process for Treating Municipal；
Fig. 2 is the apparatus structure schematic diagram of the vertical multi cycle Process for Treating Municipal of pulling flow type of the present invention；
Fig. 3 is that the deflector of the device of the vertical multi cycle Process for Treating Municipal of pulling flow type of the present invention sets schematic diagram；
Fig. 4 is the vertical multi cycle of pulling flow type of the method for the vertical multi cycle Process for Treating Municipal of pulling flow type of the present invention
Aeration tank circular response figure.
In figure, 1. city domestic sewage water tank, the 2. vertical multi cycle aeration tank of pulling flow type, 3. vertical sedimentation basin；
21. intake pumps, 22. aeration tubes, 23. deflectors, 24. temperature and dissolved oxygen probe, 25. first downflow weirs, 26. is empty
Air pump, 27. gas flowmeters；
31. second downflow weirs, 32. mud discharging mouths, 33. sludge reflux pumps.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The device of the vertical multi cycle Process for Treating Municipal of pulling flow type of the present invention, as shown in Fig. 2 including being sequentially connected
The vertical multi cycle aeration tank 2 of city domestic sewage water tank 1, pulling flow type and vertical sedimentation basin 3, the city domestic sewage water tank
1 delivery port is connected by pipeline with the water inlet of the vertical side bottom of multi cycle aeration tank 2 one of pulling flow type, is provided with the pipeline
Intake pump 21, the vertical opposite side of multi cycle aeration tank 2 top of pulling flow type is provided with the first downflow weir 25, first overflow
Weir 25 connects with the water inlet of vertical sedimentation basin 3, and the top of the vertical sedimentation basin 3 is provided with the second downflow weir 31, described
The bottom of vertical sedimentation basin 3 is provided with mud discharging mouth 32, and the bottom of the vertical sedimentation basin 3 passes through sludge reflux pump 33 and pulling flow type
The vertical water inlet side of multi cycle aeration tank 2 connection, the vertical water inlet side of multi cycle aeration tank 2 of pulling flow type is horizontally disposed with
Have to be extended down to outside the aeration tube 22 of 2 or more than 2, multiple aeration tubes 22 and air pump is connected with by gas flowmeter 27
26, being horizontally disposed with from top to bottom inside the vertical multi cycle aeration tank 2 of pulling flow type has polylith deflector 23, each described water conservancy diversion
The one end of plate 23 engages with the vertical inwall of multi cycle aeration tank 2 of pulling flow type and the other end is in the vertical multi cycle aeration tank 2 of pulling flow type
Wall has space, and the space institute of the adjacent deflector 23 is in opposite direction at one end.
The ratio wide and high in the space between each described deflector 23 and the vertical inwall of multi cycle aeration tank 2 of pulling flow type
It is 2:1.The side of first downflow weir 25 is provided with temperature and dissolved oxygen probe 24, and the temperature and dissolved oxygen probe 24 are inserted
Enter to the space between the top deflector 23 and the vertical inwall of multi cycle aeration tank 2 of pulling flow type.
The method of the vertical multi cycle Process for Treating Municipal of pulling flow type of the present invention, as shown in Figure 3-4, specifically according to following
Step is carried out：
Step 1, configures sludge
The vertical sludge source of multi cycle aeration tank 2 of pulling flow type is prepared sludge concentration and is existed in municipal sewage plant aeration tank
The sludge of 3000-4000mg/L is inoculated with, and vexed exposure starts water inlet after 2 days, inflow gradually increases daily makes microorganism gradually
It is applicable, time was at 1 week or so；
Step 2, aeration prepares
Continuous stream operational parameter control, sludge concentration is 3000-4000mg/L in the vertical multi cycle aeration tank 2 of pulling flow type,
Continuous aeration is started simultaneously at, in 2.0-3.0mg/L, hydraulic detention time is 6-12h to Dissolved Oxygen concentration Control, and return sludge ratio is
50%-100%；
Step 3, aeration process
After air enters the vertical multi cycle aeration tank 2 of pulling flow type, it is divided into minute bubbles to begin to ramp up by aeration tube 22, runs into
The deflector 23 of bottom stops and is moved along deflector 23 that now bubbles entrain liquid rises, and is blocked back reflection and transports downwards
Move, and then formation is circulated, liquid forms hyperoxia area with the abundant region of bubble contact, and center and lower area are low-oxygen area；
Vertically rise behind bubble motion to the end of bottom deflector 23, stopped by middle deflector 23, same edge
Deflector 23 in the middle of is moved, therefore forms the low of the of a relatively high Zhong Yangquji centers of peripheral dissolved oxygen concentration and bottom
Oxygen area；Last gas enters next piece of deflector 23 from the middle end of deflector 23, with the increase of dividing plate quantity, bubble fortune
It is dynamic to prolong Cheng Zengchang, while foring the different race way of multiple dissolved oxygen contents；
Due to gradually being reduced with waste water, dissolved oxygen content in bubble uphill process, when the vertical multi cycle of pulling flow type exposes
Gas pond 2 is reached after 4-5 circulations, and the 5th compartment core dissolved oxygen can reach below 0.5mg/L, with this understanding microorganism
Into anaerobic state, hardly degraded organic substance will resolve into degradable polysaccharide and amino acid by anaerobic bacteria under anaerobic, point
Solve the easily biodegradable organicses for completing to be removed in the anoxic zone for entering circulation periphery, while anaerobic condition can make nitrate nitrogen by anti-nitre
Chemical conversion nitrogen, finally overflows the water surface with bubble, reaches the removed purpose of nitrogen in sewage；
During above-mentioned bubble motion, the vertical water inlet of multi cycle aeration tank 2 water inlet of pulling flow type, current are in plug-flow form
To the vertical end movement of multi cycle aeration tank 2 of pulling flow type, therefore, bubble is subject to the induced effect of liquid plug-flow in the horizontal plane,
Effect is circulated by what the stop of deflector 23 formed upper and lower both direction on tangent plane, the common work in this both direction
Under, multiple conversion zones are constituted；
Dissolved oxygen concentration is outside from center between bottom deflector 23 and the vertical base plate of multi cycle aeration tank 2 of pulling flow type
Enclose and gradually rise, organic matter degradation occurs mainly in hyperoxia region, two directly can be herein oxidized to for small organic molecule
Carbonoxide and water；For molecular structure complexity, being difficult to biodegradable organic matter can be in middle oxygen or low oxygen area completion acidifying
This is transported to after hydrolysis, oxidizing process is continued to complete；Anoxic and the presence in middle oxygen region, for microorganism denitrification has been provided
The condition of profit, nitrate nitrogen and nitrite nitrogen can be removed in anoxic and middle oxygen region by denitrification, vertical multi cycle plug-flow technique
Improve aeration tank synchronous nitration and denitrification efficiency.
The method of the vertical multi cycle Process for Treating Municipal of pulling flow type of the present invention, municipal sewage passes through from raw water water tank 1
During stabilization in sewage is sent into dischargeable capacity for the vertical multi cycle aeration tank 2 of pulling flow type of 138.6L by intake pump 21, it is provided with it
Polylith deflector 23, deflector 23 is along the vertical water (flow) direction of multi cycle aeration tank 2 of pulling flow type, leading portion closing, bottom deflector
Distance of the 23 plate bases away from bottom of pond is 192.5mm, and 80mm, deflector 23 are away from wall length at the distal opening of each deflector 23
Horizontal positioned；Other deflectors 23 are staggeredly placed by a distance of 192.5mm successively, and 80mm is away from wall at opening.By temperature
Monitored on-line with dissolved oxygen probe 24 and changed, while there is aeration tube 22 plate of deflector 23 lower section, its outer connection air pump 26 is gentle
Flowmeter body；The vertical water outlet of multi cycle aeration tank 2 of pulling flow type enters vertical sedimentation basin 3 by difference in height, water outlet warp after precipitation
Second downflow weir 31 is flowed out, and mud discharging mouth 32 is provided with sedimentation basin, and sludge is back to the vertical multi cycle of pulling flow type and exposes through reflux pump 33
The leading portion of gas pond 2.
The application is inflow daily more than 10000 cubic metres, dirty Organic substance in water and total nitrogen ratio mainly for big yield
Waste water of the example less than 5, solves in the prior art under conditions of entering organic matter of water scarcity, and reactor denitrification ability declines, hardly possible
The problems such as degradation of organic substances can not be removed, water outlet is not up to standard.The present invention increases anoxic anaerobism by increased multiple tracks deflector
Environment, improves hardly degraded organic substance clearance, and conveys carbon source to denitrification process by loop structure, reaches the mesh of denitrogenation
's.
It is raw water that experiment uses city domestic sewage, and specific water quality is as follows：COD concentration is 200~300mg/L, NH4- N is dense
Spend for 40~50mg/L, TN concentration be 60~80mg/L, TP concentration be 4~6mg/L.Experimental system is as shown in figure 1, pulling flow type is perpendicular
It is made up of organic lower glass to multi cycle aeration tank 2,0.6m long, width 0.3m, 0.8m high, available depth is 0.77m, dischargeable capacity
It is 138.6L.
Carrying out practically is as follows：
1) the vertical sludge source of multi cycle aeration tank 2 of pulling flow type is made into sludge concentration in municipal sewage plant aeration tank
It is 4000mg/L, before experiment commencement of commercial operation, culturing sludge 1 week, recovers its active.
2) normal operating phase：
1. daily hydraulic detention time is 12h, and sludge age is 18d；
2. whole technique uses continuum micromeehanics pattern, and flow of inlet water is 11.55L/h, and sludge reflux amount ratio is 100%, is entered
Water aeration is carried out simultaneously, and dissolved oxygen control controls sludge concentration in reaction tank in 2.0mg/L using regular instantaneous spoil disposal.
3. experimental result is as shown in table 1 below：
After stable, traditional reaction tank effluent COD concentration is 20-50mg/L, and average removal rate is 87.27%；Plug-flow
The vertical effluent COD concentration of multi cycle aeration tank 2 of formula is 15.0~30.0mg/L, clearance is maintained at more than 90%；Two reaction tanks
Contrast NH4- N clearances be respectively 83.49% and 95.48%, TN for clearance be respectively 55.58% and 90.37%, TP removal
Rate reaches more than 90%.The vertical contaminant removal efficiency of multi cycle aeration tank 2 of pulling flow type more than 90%, and higher than tradition
Reaction tank.Dissolved oxygen monitoring result shows：When reaching water outlet dissolved oxygen for 2.0mg/l, the vertical multi cycle reaction tank of pulling flow type exposes
Tolerance is 0.115L/min, and traditional reaction tank aeration rate is 0.15L/min, and the vertical multi cycle reaction tank of pulling flow type has saved aeration
Energy consumption.
Table 1
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (4)
1. the device of the vertical multi cycle Process for Treating Municipal of pulling flow type, it is characterised in that including the city life being sequentially connected
Sewage water tank (1) living, the vertical multi cycle aeration tank (2) of pulling flow type and vertical sedimentation basin (3), the city domestic sewage water tank
(1) delivery port is connected by pipeline with the water inlet of the vertical side bottom of multi cycle aeration tank (2) of pulling flow type, is set on the pipeline
Intake pump (21) is equipped with, vertical multi cycle aeration tank (2) the opposite side top of pulling flow type is provided with the first downflow weir (25), institute
State the first downflow weir (25) to be connected with the water inlet of vertical sedimentation basin (3), the vertical sedimentation basin (3) top is provided with the
Two downflow weirs (31), vertical sedimentation basin (3) bottom is provided with mud discharging mouth (32), vertical sedimentation basin (3) bottom
Connected by vertical multi cycle aeration tank (2) the water inlet side of sludge reflux pump (33) and pulling flow type, the pulling flow type is vertically more
Circulated aeration tank (2) water inlet side is horizontally disposed with the aeration tube (22) of 2 or more than 2, multiple aeration tubes (22)
Outer being extended down to is connected with air pump (26) by gas flowmeter (27), the vertical multi cycle aeration tank (2) of pulling flow type it is internal from
Top to bottm is horizontally disposed polylith deflector (23), each described deflector (23) one end and the vertical multi cycle aeration tank of pulling flow type
(2) inwall is engaged and the other end has space away from vertical multi cycle aeration tank (2) inwall of pulling flow type.
2. the device of the vertical multi cycle Process for Treating Municipal of pulling flow type according to claim 1, it is characterised in that every
The ratio wide and high in the space between the individual deflector (23) and vertical multi cycle aeration tank (2) inwall of pulling flow type is 2:1.
3. the device of the vertical multi cycle Process for Treating Municipal of pulling flow type according to claim 1, it is characterised in that institute
The side for stating the first downflow weir (25) is provided with temperature and dissolved oxygen probe (24), and the temperature and dissolved oxygen probe (24) are inserted
To the space between the top deflector (23) and vertical multi cycle aeration tank (2) inwall of pulling flow type.
4. the method for the vertical multi cycle Process for Treating Municipal of pulling flow type, it is characterised in that specifically follow the steps below：
Step 1, configures sludge
Vertical multi cycle aeration tank (2) sludge source of pulling flow type is prepared sludge concentration and is existed in municipal sewage plant aeration tank
The sludge of 3000-4000mg/L is inoculated with, and vexed exposure starts water inlet after 2 days, inflow gradually increases daily makes microorganism gradually
It is applicable, time was at 1 week；
Step 2, aeration prepares
Continuous stream operational parameter control, the interior sludge concentration of the vertical multi cycle aeration tank (2) of pulling flow type is 3000-4000mg/L, together
When start continuous aeration, in 2.0-3.0mg/L, hydraulic detention time is 6-12h to Dissolved Oxygen concentration Control, and return sludge ratio is
50%-100%；
Step 3, aeration process
After air enters the vertical multi cycle aeration tank (2) of pulling flow type, it is divided into minute bubbles to begin to ramp up by aeration tube (22), runs into
The deflector (23) of bottom stops and is moved along deflector (23) that now bubbles entrain liquid rises, be blocked back reflection to
Lower motion, and then formation circulates, the abundant region of liquid and bubble contact forms hyperoxia area, and center and lower area are hypoxemia
Area；Vertically rise behind bubble motion to bottom deflector (23) end, by the stop of middle deflector (23),
It is same to be moved along middle deflector (23), thus form the of a relatively high Zhong Yangquji centers of peripheral dissolved oxygen concentration and
The low-oxygen area of bottom；Last gas enters next piece of deflector (23) from middle deflector (23) end, with dividing plate quantity
Increase, bubble motion prolongs Cheng Zengchang, while foring the different race way of multiple dissolved oxygen contents；
Due to gradually being reduced with waste water, dissolved oxygen content in bubble uphill process, when the vertical multi cycle aeration tank of pulling flow type
(2) reach after 4-5 circulations, the 5th compartment core dissolved oxygen can reach below 0.5mg/L, and microorganism enters with this understanding
Enter anaerobic state, hardly degraded organic substance will resolve into degradable polysaccharide and amino acid by anaerobic bacteria under anaerobic, decompose
The easily biodegradable organicses of completion are removed in the anoxic zone for entering circulation periphery, while anaerobic condition can make nitrate nitrogen by denitrification
Into nitrogen, the water surface finally is overflowed with bubble, reach the removed purpose of nitrogen in sewage；
During above-mentioned bubble motion, the water inlet of pulling flow type vertical multi cycle aeration tank (2) water inlet, current in plug-flow form to
Vertical multi cycle aeration tank (2) end movement of pulling flow type, therefore, bubble is subject to the induced effect of liquid plug-flow in the horizontal plane,
Stopped by deflector (23) that to form upper and lower both direction circulates effect on tangent plane, it is common in this both direction
Under effect, multiple conversion zones are constituted；
Dissolved oxygen concentration is outside from center between bottom deflector (23) and vertical multi cycle aeration tank (2) base plate of pulling flow type
Enclose and gradually rise, organic matter degradation occurs mainly in hyperoxia region, two directly can be herein oxidized to for small organic molecule
Carbonoxide and water；For molecular structure complexity, being difficult to biodegradable organic matter can be in middle oxygen or low oxygen area completion acidifying
This is transported to after hydrolysis, oxidizing process is continued to complete；Anoxic and the presence in middle oxygen region, for microorganism denitrification has been provided
The condition of profit, nitrate nitrogen and nitrite nitrogen can be removed in anoxic and middle oxygen region by denitrification, vertical multi cycle plug-flow technique
Improve aeration tank synchronous nitration and denitrification efficiency.
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| CN115212679A (en) * | 2022-07-25 | 2022-10-21 | 广东工业大学 | Ammonia-containing odor gas and washing liquid recycling system and method based on anaerobic ammonia oxidation |
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