CN209668882U - A kind of AOA type denitrification dephosphorization apparatus for sanitary sewage - Google Patents
A kind of AOA type denitrification dephosphorization apparatus for sanitary sewage Download PDFInfo
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- CN209668882U CN209668882U CN201821598056.1U CN201821598056U CN209668882U CN 209668882 U CN209668882 U CN 209668882U CN 201821598056 U CN201821598056 U CN 201821598056U CN 209668882 U CN209668882 U CN 209668882U
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Abstract
The utility model embodiment provides a kind of AOA type denitrification dephosphorization apparatus for sanitary sewage, including passes through the sequentially connected AOA reactor of pipeline, secondary settling tank and ion exchange resin reactor；It include successively anaerobic room, aerobic room and anoxic room in the AOA reactor, the anaerobic room includes 2-4 cell compartment, and aerobic room includes 2-3 cell compartment, and anoxic room includes 3-4 cell compartment, is isolated between adjacent two cell compartment by the partition with water hole；It is provided with blender in each cell compartment of the anaerobic room and anoxic room, gas pipe is provided in each cell compartment of the aerobic room, the gas pipe is connected by pipeline with feeder；Anion exchange resin is filled in the ion exchange resin reactor.Nitrogen phosphorus in sanitary sewage can be effectively removed using the AOA type denitrification dephosphorization apparatus of the utility model, reach national emission standard.
Description
Technical field
The utility model relates to technical field of sewage, more particularly to a kind of AOA type denitrogenation for sanitary sewage
Dephosphorization apparatus.
Background technique
Sanitary sewage refers mainly to the waste water that people generate in daily life, mainly some kitchen waste waters, washes
With waste waste etc., containing large amount of organic and inorganic salts, general nature be it is nitrogenous, phosphorus is more.What China promulgated for 2002
Level-one A standard requirements water outlet ammonia nitrogen concentration is less than in " urban wastewater treatment firm pollutant emission standard " (GB18918-2002)
5mg/L, total nitrogen (TN) concentration are less than 15mg/L, and total phosphorus (TP) concentration is less than 0.5mg/L.In November, 2015, Chinese Ministry of Environmental Protection assigned
The revision task of " urban wastewater treatment firm pollutant emission standard " (GB18918-2002), the new standard rule of exposure draft
It is scheduled on that environmental bearing capacity is weaker, is also easy to produce more serious problem of environmental pollution area, it should its pollutant emission of strict control,
The municipal sewage plant in these areas executes special emission limit.Special emission limit regulation water eutrophication problem is serious
Regional requirements ammonia nitrogen, TN, TP emission limit are respectively 1.5mg/L, 10mg/L, 0.3mg/L, and non-water body eutrophication problem is serious
Regional ammonia nitrogen emission limit is 3mg/L.It can be seen that needing to handle it for sanitary sewage, especially progress denitrogenation
It is discharged again after dephosphorization processing.
Utility model content
The utility model embodiment is designed to provide a kind of AOA type denitrification dephosphorization apparatus for sanitary sewage, with
Realize the denitrogenation dephosphorizing of sanitary sewage.Specific technical solution is as follows:
The utility model provides a kind of AOA type denitrification dephosphorization apparatus for sanitary sewage, including successively by pipeline
AOA reactor, secondary settling tank and the ion exchange resin reactor of connection；It successively include anaerobic room in the AOA reactor, aerobic
Room and anoxic room, the anaerobic room include 2-4 cell compartment, and aerobic room includes 2-3 cell compartment, and anoxic room includes 3-4 cell compartment, phase
It is isolated between adjacent two cell compartments by the partition with water hole；It is provided with and stirs in each cell compartment of the anaerobic room and anoxic room
Device is mixed, gas pipe is provided in each cell compartment of the aerobic room, the gas pipe is connected by pipeline with feeder；
Anion exchange resin is filled in the ion exchange resin reactor.
In some embodiments of the utility model, each cell compartment volume is equal.
In some embodiments of the utility model, described device further includes raw water box, and the raw water box passes through pipeline
It is connected with the water inlet end of the AOA reactor.
In some embodiments of the utility model, it is provided on the pipeline of connection raw water box and AOA reactor into water
Pump.
In some embodiments of the utility model, the secondary settling tank is anti-with AOA by the sludge return pipe of bottom
First cell compartment of the anaerobic room of device is answered to be connected.
In some embodiments of the utility model, described device further includes intermediate water tank, the intermediate water tank setting
It is connected between secondary settling tank and ion exchange resin reactor, and through pipeline with secondary settling tank and ion exchange resin reactor.
In some embodiments of the utility model, between the intermediate water tank and the ion exchange resin reactor
Pipeline on be provided with intake pump.
In some embodiments of the utility model, blender is provided in the ion exchange resin reactor.
In some embodiments of the utility model, the water outlet of the ion exchange resin reactor is provided with valve
Door.
In some embodiments of the utility model, described device further includes water tank, the water tank and it is described from
The water outlet of sub-exchange resin reactor is connected by pipeline.
AOA type denitrification dephosphorization apparatus provided by the embodiment of the utility model for sanitary sewage, passes through anaerobic-aerobic-
The processing sequence of anoxic can effectively remove phosphorus and nitrogen in sewage；In addition, can effectively be gone using ion exchange resin reactor
Except in AOA reactor due to carbon source limitation or low temperature cause bacterium vigor decline and remaining nitrite nitrogen, to guarantee effluent quality
Reach the discharge standard of national requirements.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of AOA type denitrification dephosphorization apparatus for sanitary sewage.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of AOA type denitrification dephosphorization apparatus for sanitary sewage, as shown in Figure 1, including logical
The sequentially connected AOA reactor 2 of piping, secondary settling tank 3 and ion exchange resin reactor 5；In the AOA reactor 2 successively
Including anaerobic room 21, aerobic room 22 and anoxic room 23, the anaerobic room 21 includes 2-4 cell compartment, and aerobic room 22 includes 2-3 lattice
Room, anoxic room 23 include 3-4 cell compartment, are isolated between adjacent two cell compartment by the partition with water hole；21 He of anaerobic room
It is provided with blender 24 in each cell compartment of anoxic room 23, is provided with gas distribution in each cell compartment of the aerobic room 22
Device 26, the gas pipe 26 are connected by pipeline with feeder 25；Be filled in the ion exchange resin reactor 5 yin from
Sub-exchange resin.
In some embodiments of the utility model, a diameter is respectively arranged about in upper and lower part respectively in each partition
The water hole of 1.5cm.
In some embodiments of the utility model, the gas pipe 26 is selected from aeration head, aeration plate, air distribution plate etc.,
The feeder 25 can be selected from air compressor.
AOA reactor described in the utility model indicates that Anaeroxic-Oxic-Anoxic (anaerobic-aerobic-anoxic) is anti-
Device is answered, i.e., the described reactor successively includes anaerobic reaction area, aerobic reactor zone and hypoxia response area, respectively corresponds the utility model
Anaerobic room 21, aerobic room 22 and the anoxic room 23, the biochemical reaction mainly occurred in differential responses area is different, to remove not
Congener pollutant, wherein anaerobic reaction area is mainly that polyP bacteria releases phosphorus reaction and absorbs COD synthesis internal carbon source；Aerobic zone
It is nitrite nitrogen that predominantly polyP bacteria, which inhales phosphorus reaction and ammonia oxidation bacteria for ammonium oxidation,；Anoxic zone is mainly that denitrifying bacterium will be sub-
Nitrate nitrogen is converted into nitrogen, internal carbon source of the carbon source from releases such as polyP bacterias.By adjusting the quantity of each reaction zone cell compartment, control
The reaction time of each reaction zone is made, to achieve the effect that most preferably to remove pollutant.AOA type denitrogenation dephosphorizing described in the utility model
Device refers to the denitrification dephosphorization apparatus using the AOA reactor.
In some embodiments of the utility model, each cell compartment volume is equal.The quantity of each cell compartment in each reaction zone
And the volume of each cell compartment can adjust according to actual needs, can calculate each reaction zone from there through control water velocity
Reaction time.
In some embodiments of the utility model, described device further includes raw water box 1, and the raw water box 1 passes through pipe
Road is connected with the water inlet end of the AOA reactor 2.
In some embodiments of the utility model, connection raw water box 1 and AOA reactor 2 pipeline on be provided with into
Water pump 11.
In some embodiments of the utility model, the secondary settling tank 3 passes through the sludge return pipe 31 of bottom, with
First cell compartment of the anaerobic room 21 of AOA reactor 2 is connected." first cell compartment " refers to according to water in AOA reactor
Flow direction, first cell compartment that raw water is flowed through.
In some embodiments of the utility model, secondary settling tank 3 can be selected from rectangular sedimentation tank, radical sedimentation basin or
Vertical sedimentation basin etc., the area of the secondary settling tank 3 and volume etc. can according to system hydraulic detention time in practical application and
Return sludge ratio etc. calculates, this is customary technical means in the art, and the utility model is it is not limited here.
In some embodiments of the utility model, described device further includes intermediate water tank 4, and the intermediate water tank 4 is set
It is placed between secondary settling tank 3 and ion exchange resin reactor 5, and passes through pipeline and secondary settling tank 3 and ion exchange resin reactor 5
It is connected.In some embodiments of the utility model, the AOA reactor 2 can Continuous Wastewater Treatment, and the ion exchange
Resin reaction device 5 then needs to handle in batches, it is therefore desirable to intermediate water tank 4 be arranged, by treated the waste water of AOA reactor 2
It is stored in intermediate water tank 4, ion exchange resin reactor 5 is waited to handle.
In some embodiments of the utility model, the intermediate water tank 4 and the ion exchange resin reactor 5 it
Between pipeline on be provided with intake pump 51, enter in ion exchange resin reactor 5 to extract the water in intermediate water tank 4.
In some embodiments of the utility model, it is provided with blender 52 in the ion exchange resin reactor 5,
So that the water and ion exchange resin in ion exchange resin reactor 5 come into full contact with.
In some embodiments of the utility model, the anion loaded in the ion exchange resin reactor 5 is handed over
Changing resin is magnetic anion exchange resin；The magnetic anion exchange resin is compared with common anion exchanger resin, magnetic
Property resin structure in be magnetic iron oxide composition, make it have weak magnetic, this magnetism speciality makes it easier to reunite, sedimentation speed
Rate is fast, is conducive to the separation and recovery of resin, reduces and is lost, the rate of recovery is up to 99.9%；Meanwhile magnetic ion exchange resin partial size
Only 10-200 μm, 2-5 times smaller than ordinary resin partial size, specific surface area is larger, and pollutant and its ion-exchange sites can be enhanced
The contact of point reduces the distance of ion internal gutter diffusion, improves the removal efficiency of pollutant.In some realities of the utility model
It applies in mode, the water flowing multiple of the magnetic anion exchange resin is 400-800BV (i.e. 1.25-2.5mL/L), remaining nitrous
State nitrogen can quickly be removed by magnetic anion exchange resin, and water outlet reaches or better than urban wastewater treatment firm pollutant emission
The level-one A standard of standard.
In some embodiments of the utility model, the water outlet of the ion exchange resin reactor is provided with valve
53.In some embodiments of the utility model, the valve 53 is timing drainage valve or automatic drain valve, settable automatic
Water discharge time realizes automatic operation.
In some embodiments of the utility model, described device further includes water tank 6, the water tank and it is described from
The water outlet of sub-exchange resin reactor 5 is connected by pipeline.
Illustratively, sanitary sewage, including following step are handled using AOA type denitrification dephosphorization apparatus provided by the utility model
It is rapid:
(1) start AOA reactor, wherein anaerobic room has 3 cell compartments；Aerobic room has 2 cell compartments；Anoxic room has 3
A cell compartment: inoculation municipal sewage plant A2O technique excess sludge is in AOA reactor 2, while by the city in raw water box 1
Sanitary sewage injects AOA reactor 2, while starting blender 24 and feeder 25.Keeping each cell compartment sludge concentration is 2500-
4000mg/L, return sludge ratio 50%-100%, each cell compartment dissolved oxygen maintains 1.2mg/L hereinafter, system in aerobic room 22
Hydraulic detention time is 12-20h.Continuous operation AOA reactor is repeated, until the nitrite nitrogen accumulation rate that AOA reactor 2 is discharged
(amount of nitrite nitrogen is than the sum of nitrite nitrogen and the amount of nitrate nitrogen) reaches the success of 95% or more, AOA reactor start-up.
(2) continuous operation AOA reactor.
(3) water outlet of AOA reactor in intermediate water tank 4 is pumped into ion exchange resin reactor 5, after the completion of water inlet,
Start blender 52, stir 20-40min, be subsequently agitated for device closing, precipitate 10-20min, drained after the completion of precipitating, draining ratio is
90%-95%.This step is repeated, until processing is completed.
Using the AOA type denitrification dephosphorization apparatus of the utility model, certain community life sewage is handled through the above steps:
Water quality is as follows before handling: COD concentration is 110-320mg/L, ammonia nitrogen concentration 40-85mg/L, nitrite nitrogen, nitre state
Nitrogen concentration is in detection limit hereinafter, total phosphorus concentration is 4.5-6.8mg/L, pH 7.0-7.8；COD is less than 40mg/L, ammonia after processing
Nitrogen concentration is less than 3mg/L, and total nitrogen concentration is less than 10mg/L, and total phosphorus concentration is less than 0.5mg/L, better than national urban wastewater treatment firm
The level-one A standard of pollutant emission standard.
The above is only the preferred embodiment of the utility model only, is not intended to limit the protection model of the utility model
It encloses.Any modification, equivalent substitution, improvement and etc. made within the spirit and principle of the present invention, are all contained in this reality
With in novel protection scope.
Claims (10)
1. a kind of AOA type denitrification dephosphorization apparatus for sanitary sewage, which is characterized in that including sequentially connected by pipeline
AOA reactor, secondary settling tank and ion exchange resin reactor；
It include successively anaerobic room, aerobic room and anoxic room in the AOA reactor, the anaerobic room includes 2-4 cell compartment, aerobic
Room includes 2-3 cell compartment, and anoxic room includes 3-4 cell compartment, is isolated between adjacent two cell compartment by the partition with water hole；
It is provided with blender in each cell compartment of the anaerobic room and anoxic room, in each cell compartment of the aerobic room
It is provided with gas pipe, the gas pipe is connected by pipeline with feeder；
Anion exchange resin is filled in the ion exchange resin reactor.
2. the apparatus according to claim 1, which is characterized in that each cell compartment volume is equal.
3. the apparatus according to claim 1, which is characterized in that further include raw water box, the raw water box passes through pipeline and institute
The water inlet end for stating AOA reactor is connected.
4. device according to claim 3, which is characterized in that be provided on connection raw water box and the pipeline of AOA reactor
Intake pump.
5. the apparatus according to claim 1, which is characterized in that the secondary settling tank by the sludge return pipe of bottom, with
First cell compartment of the anaerobic room of AOA reactor is connected.
6. the apparatus according to claim 1, which is characterized in that further include intermediate water tank, the intermediate water tank is set to two
Between heavy pond and ion exchange resin reactor, and it is connected by pipeline with secondary settling tank and ion exchange resin reactor.
7. device according to claim 6, which is characterized in that the intermediate water tank and the ion exchange resin reactor
Between pipeline on be provided with intake pump.
8. the apparatus according to claim 1, which is characterized in that be provided with stirring in the ion exchange resin reactor
Device.
9. the apparatus according to claim 1, which is characterized in that the water outlet of the ion exchange resin reactor is provided with
Valve.
10. the apparatus according to claim 1, which is characterized in that further include water tank, the water tank and the ion are handed over
The water outlet for changing resin reaction device is connected by pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821598056.1U CN209668882U (en) | 2018-09-28 | 2018-09-28 | A kind of AOA type denitrification dephosphorization apparatus for sanitary sewage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821598056.1U CN209668882U (en) | 2018-09-28 | 2018-09-28 | A kind of AOA type denitrification dephosphorization apparatus for sanitary sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367964A (en) * | 2022-08-26 | 2022-11-22 | 南京大学 | Wastewater treatment method based on biological-anion exchange resin system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367964A (en) * | 2022-08-26 | 2022-11-22 | 南京大学 | Wastewater treatment method based on biological-anion exchange resin system |
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