CN207537221U - A kind of railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit - Google Patents
A kind of railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit Download PDFInfo
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- CN207537221U CN207537221U CN201721525148.2U CN201721525148U CN207537221U CN 207537221 U CN207537221 U CN 207537221U CN 201721525148 U CN201721525148 U CN 201721525148U CN 207537221 U CN207537221 U CN 207537221U
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- folded plate
- anaerobism
- autotrophic denitrification
- denitrification device
- reaction unit
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- 239000010865 sewage Substances 0.000 title claims abstract description 87
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 49
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 123
- 230000001651 autotrophic effect Effects 0.000 claims abstract description 94
- 238000006243 chemical reaction Methods 0.000 claims abstract description 81
- 238000012545 processing Methods 0.000 claims abstract description 31
- 238000010992 reflux Methods 0.000 claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 238000005273 aeration Methods 0.000 claims description 26
- 239000000945 filler Substances 0.000 claims description 23
- 238000007667 floating Methods 0.000 claims description 14
- 238000005276 aerator Methods 0.000 claims description 13
- 238000012856 packing Methods 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 31
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 26
- 239000000203 mixture Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 239000010802 sludge Substances 0.000 description 12
- 241000193830 Bacillus <bacterium> Species 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000005868 electrolysis reaction Methods 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 238000003672 processing method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000254158 Lampyridae Species 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 238000011081 inoculation Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001546 nitrifying effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model is related to a kind of railway middle and small stations area low ratio of carbon to ammonium sewage treatment units, belong to technical field of sewage, processing system includes regulating reservoir, anaerobism folded plate reaction unit, autotrophic denitrification device, biological aerated filter, water inlet pipe, elevator pump, reflux pump, return duct and drainpipe；Regulating reservoir is connected by water inlet pipe and elevator pump with anaerobism folded plate reaction unit；Anaerobism folded plate reaction unit is connected with autotrophic denitrification device；Autotrophic denitrification device is connected with biological aerated filter；Biological aerated filter is connected by return duct with reflux pump with autotrophic denitrification device, is on the other hand discharged by drainpipe.Railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit provided by the utility model, the purpose of depth removal COD, denitrogenation dephosphorizing can be realized simultaneously, have the characteristics that treatment effeciency is high, stable, easy to operate, without additionally adding carbon source, operating cost is low, and the processing up to standard and low-consumption high-efficiency operation for the low C/N waste water especially sanitary sewage of railway moderate and small stations have actual application value.
Description
Technical field
The utility model is related to sewage-treatment plants, and in particular at a kind of railway middle and small stations area low ratio of carbon to ammonium sanitary sewage
Device is managed, belongs to technical field of sewage.
Background technology
Railway middle and small stations area sanitary sewage has that water is small, variation water quality is big, high ammonia nitrogen, low ratio of carbon to ammonium and may lack city
The properties such as political affairs pipe network and feature.
The processing of China railways middle and small stations area sanitary sewage at present generally uses the SBR (letters of sequencing batch active sludge
Claim), MBR (membrane bioreactor is a kind of water technology being combined by activated sludge process with membrane separation technique), contact oxygen
There is poor denitrification and dephosphorization effect in traditional aerobic treatment process such as change, these techniques.
Therefore, with the increasingly raising of sanitary sewage emission request, above-mentioned sewage disposal technology is difficult to meet discharge standard
Requirement.
In the existing sewage treatment facility of railway and grassroot project design, active demand is with strong points, high-efficiency and economic, takes off
Nitrogen phosphor-removing effect is good, the simple domestic sewage processing system of Operation and Maintenance and method.
Utility model content
One of the purpose of this utility model is to provide a kind of railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit.
The above-mentioned purpose of the utility model reaches by the following technical programs：
A kind of railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit, it is anti-including anaerobism folded plate reaction unit, autotrophy
Nitrification installation and biological aerated filter；The anaerobism folded plate reaction unit is connected with the autotrophic denitrification device；It is described from
Denitrification device is supported with the biological aerated filter to be connected；
The anaerobism folded plate reaction unit includes anaerobism folded plate reaction unit water inlet, folded plate, baffle, baffling room, anaerobism
Folded plate reaction unit water outlet, gas collection hole, gas collecting tube and gas collecting apparatus；The anaerobism folded plate reaction unit water inlet is located at anaerobism
The top of folded plate reaction unit；Anaerobic reaction is partitioned into several baffling rooms by the baffle；The folded plate is vertically arranged to roll over
Among flow chamber, so as to which flow be made to be flowed in eddy flow direction, the gas collection hole is arranged on the top of baffling room；The gas collection hole passes through
Gas collecting tube is connected with gas collecting apparatus；The anaerobism folded plate reaction unit water outlet is located at the lower part of anaerobism folded plate reaction unit；
The autotrophic denitrification device includes autotrophic denitrification device water inlet, packed bed, compounded mix and the anti-nitre of autotrophy
Water outlet is put in makeup；The autotrophic denitrification device water inlet is located at the lower part of autotrophic denitrification device, autotrophic denitrification device
Water outlet is located at the top of autotrophic denitrification device, and water (flow) direction is up flow type, and the packed bed is located at the autotrophic denitrification
The middle part of device, the compounded mix are located on the packed bed；
The biological aerated filter includes biological aerated filter water inlet, disk water distributor, filler, biological aerated filter and goes out
The mouth of a river, aerator, air hose and wind turbine；The biological aerated filter water inlet is located at a side lower part of biological aerated filter；
The top that the disk water distributor is located at biological aerated filter is placed in the middle, carries out water distribution uniformity；The filler is located at aeration and biological filter
The middle part in pond；The effluent of aeration biological filter mouth is located at another side lower part of biological aerated filter, and sewage flows through packing layer, by
Effluent of aeration biological filter mouth is discharged；Effluent of aeration biological filter mouth is connected with discharge pipe, while passes through return duct and reflux
Pump is connected with the bottom of autotrophic denitrification device；Aerator is uniformly laid on biofilter bottom, by air pipe line with
Wind turbine is connected, and is aerated.
Preferably, the folded plate is arranged side by side for three.
Preferably, the plate washer is arranged side by side for three.
Preferably, the gas collection hole is arranged side by side for three.
Preferably, the aerator is arranged side by side for five.
Preferably, the compounded mix is nZVI/GAC (Zero-valent Iron/granular activated carbon) compounded mix for loading Pd (palladium).
Preferably, the nZVI/GAC compounded mixs of the load Pd are spherical shape.
Preferably, the average grain diameter of the nZVI/GAC compounded mixs of the spherical supported Pd is 0.5~1cm.
Preferably, the effect of compounded mix load Pd is to may be constructed ternary Inner electrolysis reaction system, make electronics by
Body is multiplied, and accelerates mass transfer rate of the pollutant to electrode surface, so as to improve denitrogenation dephosphorizing efficiency.
Preferably, the filler in the biological aerated filter is porous spherical floating stuffing.
Preferably, the proportion of the porous spherical floating stuffing is less than 1g/cm3, average grain diameter 1cm.
The another object of the utility model is to provide a kind of railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system.
The above-mentioned purpose of the utility model reaches by the following technical programs：
A kind of railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system, it is characterised in that：At regulating reservoir, sewage
Manage device, water inlet pipe, elevator pump, reflux pump, return duct and drainpipe；The sewage-treatment plant includes anaerobism folded plate reaction dress
It puts, autotrophic denitrification device and biological aerated filter；The regulating reservoir is anti-by water inlet pipe and elevator pump and the anaerobism folded plate
Device is answered to be connected；The anaerobism folded plate reaction unit is connected with the autotrophic denitrification device；The autotrophic denitrification dress
It puts and is connected with the biological aerated filter；The biological aerated filter passes through return duct and reflux pump and the autotrophic denitrification
Device is connected, and is on the other hand discharged by drainpipe；
The anaerobism folded plate reaction unit includes anaerobism folded plate reaction unit water inlet, folded plate, baffle, baffling room, anaerobism
Folded plate reaction unit water outlet, gas collection hole, gas collecting tube and gas collecting apparatus；The anaerobism folded plate reaction unit water inlet is located at anaerobism
The top of folded plate reaction unit；Anaerobic reaction is partitioned into several baffling rooms by the baffle；The folded plate is vertically arranged to roll over
Among flow chamber, so as to which flow be made to be flowed in eddy flow direction, the gas collection hole is arranged on the top of baffling room；The gas collection hole passes through
Gas collecting tube is connected with gas collecting apparatus；The anaerobism folded plate reaction unit water outlet is located at the lower part of anaerobism folded plate reaction unit；
The autotrophic denitrification device includes autotrophic denitrification device water inlet, packed bed, compounded mix and the anti-nitre of autotrophy
Water outlet is put in makeup；The autotrophic denitrification device water inlet is located at the lower part of autotrophic denitrification device, autotrophic denitrification device
Water outlet is located at the top of autotrophic denitrification device, and water (flow) direction is up flow type, and the packed bed is located at the autotrophic denitrification
The middle part of device, the compounded mix are located on the packed bed；
The biological aerated filter includes biological aerated filter water inlet, disk water distributor, filler, biological aerated filter and goes out
The mouth of a river, aerator, air hose and wind turbine；The biological aerated filter water inlet is located at a side lower part of biological aerated filter；
The top that the disk water distributor is located at biological aerated filter is placed in the middle, carries out water distribution uniformity；The filler is located at aeration and biological filter
The middle part in pond；The effluent of aeration biological filter mouth is located at another side lower part of biological aerated filter, and sewage flows through packing layer, by
Effluent of aeration biological filter mouth is discharged；Effluent of aeration biological filter mouth is connected with discharge pipe, while passes through return duct and reflux
Pump is connected with the bottom of autotrophic denitrification device；Aerator is uniformly laid on biofilter bottom, by air pipe line with
Wind turbine is connected, and is aerated.
Preferably, the folded plate is arranged side by side for three.
Preferably, the plate washer is arranged side by side for three.
Preferably, the gas collection hole is arranged side by side for three.
Preferably, the aerator is arranged side by side for five.
Preferably, the compounded mix is the nZVI/GAC compounded mixs for loading Pd.
Preferably, the nZVI/GAC compounded mixs of the load Pd are spherical shape.
Preferably, the average grain diameter of the nZVI/GAC compounded mixs of the spherical supported Pd is 0.5~1cm.
Preferably, the effect of compounded mix load Pd is to may be constructed ternary Inner electrolysis reaction system, make electronics by
Body is multiplied, and accelerates mass transfer rate of the pollutant to electrode surface, so as to improve denitrogenation dephosphorizing efficiency.
Preferably, the filler in the biological aerated filter is porous spherical floating stuffing.
Preferably, the proportion of the porous spherical floating stuffing is less than 1g/cm3, average grain diameter 1cm.
A further object of the utility model is to provide railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing method.
The above-mentioned purpose of the utility model reaches by the following technical programs：
A kind of railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing method, its step are as follows：
(1) anaerobic grain sludge is inoculated in anaerobism folded plate reaction unit, it will be in regulating reservoir by elevator pump and water inlet pipe
Sewage transport to anaerobism folded plate reaction unit in；The biogas generated in reaction process is collected by gas collecting apparatus, and treated
Anaerobism folded plate reaction unit water outlet of the water through anaerobism folded plate reaction unit lower part enters autotrophic denitrification device and is handled；
(2) autotrophic denitrification bacterium is inoculated in autotrophic denitrification device, and is put into the nZVI/GAC compounded mixs of load Pd,
The water outlet of anaerobism folded plate reaction unit enters in autotrophic denitrification device；Under conditions of in anoxic and not adding carbon source, in Fe-C-
The process of denitrification denitrogenation and adsorption and dephosphorization is completed in the ternary light electrolysis system that Pd is formed；
(3) aerobic sludge is inoculated in biological aerated filter, and is put into filler, the water outlet of autotrophic denitrification device enters exposure
In gas biofilter, water distribution uniformity is carried out by disk water distributor, is aerated by wind turbine and aerator；
(4) a water outlet part for biological aerated filter is flowed back by return duct and reflux pump in autotrophic denitrification device,
Strengthen the effect of biological carbon and phosphorous removal；Another part qualified discharge.
Preferably, autotrophic denitrification bacterium described in the step (2) is denitrification bacillus, Si Shi bacillus or firefly air exhaustion hair bar
Bacterium.
Preferably, the volume ratio of packed bed described in the step (2) is 60~80%.
Preferably, the nZVI/GAC compounded mixs that Pd is loaded described in the step (2) are spherical shape.
Preferably, the average grain diameter of the nZVI/GAC compounded mixs of the spherical supported Pd is 0.5~1cm.
Preferably, filler described in the step (3) is porous spherical floating stuffing.
Preferably, the proportion of the porous spherical floating stuffing is less than 1g/cm3, average grain diameter 1cm.
Preferably, the reflux ratio to flow back described in the step (4) is 50~100%.
Advantageous effect：
The railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit and system that the utility model is proposed easily install,
It is easy to maintain, floor space is small, saves capital expenditure, while realize reduce COD, denitrogenation and dephosphorization efficiency, there is low energy consumption
Efficient feature.
The railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit and system that the utility model is proposed, operation letter
Just, flexible operation has applicability, economy for the processing of region of war sanitary sewage small in railway.
The railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing method that the utility model is proposed is, it can be achieved that small in railway
COD, NH in section of standing sanitary sewage4 +- N, TN, TP qualified discharge (cities and towns level-one A standards).
Railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit provided by the utility model and system, can be simultaneously
It realizes the purpose of depth removal COD, denitrogenation dephosphorizing, has the characteristics that treatment effeciency is high, stable, easy to operate, without volume
Carbon source is added outside, operating cost is low, processing up to standard for the low C/N waste water especially sanitary sewage of railway moderate and small stations and low
Consuming Effec-tive Function has actual application value.
The utility model is described further, but is not meant to this reality below by the drawings and specific embodiments
With the limitation of novel protected range.
Description of the drawings
Fig. 1 is the structure diagram of the utility model railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system.
Fig. 2 is anaerobism folded plate reaction unit in the utility model railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system
Structure diagram.
Fig. 3 is autotrophic denitrification device in the utility model railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system
Structure diagram.
Fig. 4 is the knot of biological aerated filter in the utility model railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system
Structure schematic diagram.
Main appended drawing reference explanation：
1 regulating reservoir, 2 anaerobism folded plate reaction unit
3 autotrophic denitrification device, 4 biological aerated filter
5 water inlet pipe, 6 elevator pump
7 reflux pump, 8 return duct
9 drainpipes
201 anaerobism folded plate reaction unit water inlet, 202 folded plate
203 baffle, 204 baffling room
205 anaerobism folded plate reaction unit water outlet, 206 gas collection hole
207 gas collecting tube, 208 gas collecting apparatus
301 autotrophic denitrification device water inlet, 302 packed bed
303 compounded mix, 304 autotrophic denitrification device water outlet
401 biological aerated filter water inlet, 402 disk water distributor
403 filler, 404 effluent of aeration biological filter mouth
405 aerator, 406 air hose
407 wind turbines
Specific embodiment
Embodiment 1
As shown in Figure 1, the structural representation for the utility model railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system
Figure, wherein, 1 is regulating reservoir, and 2 be anaerobism folded plate reaction unit, and 3 be autotrophic denitrification device, and 4 be biological aerated filter, 5 be into
Water pipe, 6 be elevator pump, and 7 be reflux pump, and 8 be return duct, and 9 be drainpipe；The low ratio of carbon to ammonium life of the utility model railway middle and small stations area
It is (main that sewage disposal system living includes regulating reservoir 1, anaerobism folded plate reaction unit 2, autotrophic denitrification device 3, biological aerated filter 4
Sewage-treatment plant is constituted by anaerobism folded plate reaction unit 2, autotrophic denitrification device 3 and biological aerated filter 4), water inlet
Pipe 5, elevator pump 6, reflux pump 7, return duct 8, drainpipe 9；Regulating reservoir 1 is reacted by water inlet pipe 5 and elevator pump 6 with anaerobism folded plate
Device 2 is connected；Anaerobism folded plate reaction unit 2 is connected with autotrophic denitrification device 3；Autotrophic denitrification device 3 is given birth to aeration
Object filter tank 4 is connected；Biological aerated filter 4 is connected by return duct 8 with reflux pump 7 with autotrophic denitrification device 3, the opposing party
It is discharged by drainpipe 9 in face.
The course of work of the utility model railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system is as follows：
(1) sewage passes through water inlet pipe 5 and elevator pump 6 and anaerobism folded plate reaction unit water inlet 201 by regulating reservoir 1 first
Into anaerobism folded plate reaction unit 2, the inoculation anaerobic grain sludge in anaerobism folded plate reaction unit 2, complete COD degradation and
Anaerobic phosphorus release process, while by the collecting methane of generation, recycled；
(2) secondly, after the processing of anaerobism folded plate reaction unit 2, water outlet is discharged sewage by anaerobism folded plate reaction unit
Mouth 205 and autotrophic denitrification device water inlet 301 enter autotrophic denitrification device 3, the inoculation autotrophy in autotrophic denitrification device 3
Denitrifying bacterium (such as denitrification bacillus, Si Shi bacillus, firefly air exhaustion hair bacillus), the nZVI/GAC that packed bed is equipped with load Pd are answered
Filler is closed, the nZVI/GAC compounded mixs for loading Pd are spherical shape, the average grain diameter of the nZVI/GAC compounded mixs of spherical supported Pd
It for 0.75cm, is come into full contact with by packed bed and autotrophic denitrification bacterium, is completed in the ternary light electrolysis system formed in Fe-C-Pd
Autotrophic denitrification denitrogenation and the process of adsorption and dephosphorization, the process are completed, without adding organic carbon, are saved under anoxic conditions
This, non-secondary pollution, water outlet enters biological aerated filter, and reaction mechanism is as follows：
Fe+2H2O=Fe2++H2+2OH- (1)
2Fe2++NO3 -+H2O=2Fe3++NO2 -+2OH- (2)
2NO2 -+3H2=N2↑+2H2O+2OH- (3)
Fe3++3OH-=Fe (OH)3↓ (4)
(3) then, sewage enters biological aerated filter 4, and commercially available aerobic sludge in the market is inoculated in biological aerated filter, and
Porous spherical floating stuffing (such as Wuxi leads to the porous spherical floating stuffing of Tian Boshi environmental science and technology Co., Ltd sale) is put into,
Proportion is 0.6g/cm3, average grain diameter 1cm, by 402 water distribution uniformity of disk water distributor, sewage flows through filler and is loaded with it
Microorganism fully reacts, and completes nitrifying process, strengthens the effect of organic matter degradation and denitrogenation dephosphorizing, and effluent quality is good, water outlet
A part is back to autotrophic denitrification device 3 by return duct 8 and reflux pump 7, and a part of qualified discharge, reaction mechanism is such as
Under：
NH4 ++2O2+2OH-=NO3 -+3H2O
Be above the railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system in the utility model primary structure and
Its processing procedure and reaction mechanism.
Introduce the concrete composition of all parts respectively below against attached drawing：
As shown in Fig. 2, for anaerobism folded plate in the utility model railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system
The structure diagram of reaction unit, anaerobism folded plate reaction unit include anaerobism folded plate reaction unit water inlet 201, folded plate 202, gear
Plate 203, baffling room 204, anaerobism folded plate reaction unit water outlet 205, gas collection hole 206, gas collecting tube 207 and gas collecting apparatus 208；Detest
Oxygen folded plate reaction unit water inlet 201 is located at the top of anaerobism folded plate reaction unit 2；Baffle 203 (three pieces of plate washers) is anti-by anaerobism
It should be partitioned into three baffling rooms；Folded plate 202 (three blocks of folded plates) is vertically arranged among baffling room, so as to which flow be made to be in eddy flow direction
Flowing, gas collection hole 206 (three) are arranged on the top of each baffling room；Gas collection hole 206 passes through gas collecting tube 207 and gas collecting apparatus
208 are connected；Anaerobism folded plate reaction unit water outlet 205 is located at the lower part of anaerobism folded plate reaction unit 2.
It is anti-that sewage by anaerobism folded plate reaction unit water inlet 201 enters anaerobism folded plate from the top of anaerobism folded plate reaction unit
Area is answered, eddy flow is formed under the action of folded plate 202 with baffle 203 and is elapsed forward, the inoculation anaerobism in anaerobism folded plate reaction unit 2
Granule sludge continues sewage hydrolyzing acidification flow, and under the action of eddy flow and gas, sewage is fully mixed with anaerobic grain sludge
It closes, realizes the efficient degradation of pollutant, the biogas of generation enters gas collecting apparatus 208 by the gas collection hole 206 at top, recycled
It utilizes, the anaerobism folded plate reaction unit water outlet 205 of treated lower part of the water through anaerobism folded plate reaction unit 2 enters next stage
Device autotrophic denitrification device.
As shown in figure 3, for the anti-nitre of autotrophy in the utility model railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system
Disguise the structure diagram put；Autotrophic denitrification device 3 includes autotrophic denitrification device water inlet 301, packed bed 302, compound
Filler 303 and autotrophic denitrification device water outlet 304；Autotrophic denitrification device water inlet 301 is located at autotrophic denitrification device 3
Lower part, autotrophic denitrification device water outlet 304 are located at the top of autotrophic denitrification device 3, and water (flow) direction is up flow type, packed bed
302 are located at the middle part of autotrophic denitrification device 3, and compounded mix 303 is located on packed bed 302；It is inscribed in autotrophic denitrification device 3
Kind autotrophic denitrification bacterium (such as denitrification bacillus, Si Shi bacillus, firefly air exhaustion hair bacillus), packed bed 302 are equipped with load Pd's
NZVI/GAC compounded mixs 303, the nZVI/GAC compounded mixs 303 for loading Pd are spherical shape, and the nZVI/GAC of spherical supported Pd is answered
The average grain diameter for closing filler 303 is 0.75cm.
Sewage enters autotrophic denitrification dress by autotrophic denitrification device water inlet 301 from the bottom of autotrophic denitrification device 3
3 are put, flow is in up-flow；The volume ratio of packed bed 302 is 70%, and compounded mix is the nZVI/GAC compounded mixs for loading Pd；
Sewage flows up through packed bed, autotrophic denitrification bacterium (such as denitrification bacillus, Si Shi bacillus, the firefly air exhaustion hair bacillus loaded with it
Deng) process of denitrification denitrogenation and adsorption and dephosphorization is completed in the ternary light electrolysis system that is formed in Fe-C-Pd, treated water from
The water outlet on top is discharged into next stage arrangement biological aerated filter.
As shown in figure 4, for aeration and biological in the utility model railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system
The structure diagram in filter tank；Biological aerated filter 4 includes biological aerated filter water inlet 401, disk water distributor 402, filler
403rd, effluent of aeration biological filter mouth 404, aerator 405, air hose 406 and wind turbine 407；Biological aerated filter water inlet
401 are located at a side lower part of biological aerated filter 4；The top that disk water distributor 402 is located at biological aerated filter 4 is placed in the middle, carries out
Water distribution uniformity；Filler 403 is located at the middle part of biological aerated filter 3；Effluent of aeration biological filter mouth 404 is located at biological aerated filter
4 another side lower part, sewage flow through filler 403, are discharged by effluent of aeration biological filter mouth 404；Effluent of aeration biological filter mouth
404 are connected with discharge pipe 9, while are connected by return duct 8 and reflux pump 7 with the bottom of autotrophic denitrification device 3, aeration
Device 405 (altogether five) is uniformly laid on the bottom of biological aerated filter 4, and pass through air pipe line 406 and 407 phase of wind turbine
Even, it is aerated.
Sewage enters disk water distributor 402 by biological aerated filter water inlet 401, by disk water distributor 402 from above
Water distribution uniformity is inoculated with commercially available aerobic sludge, and be put into porous spherical floating stuffing in biological aerated filter 4,
Its proportion is 0.6g/cm3, average grain diameter 1cm, sewage from top to bottom flows through filler 403, and micro- in aerobic sludge thereon
Biology, which comes into full contact with, completes COD degradation and nitrifying process, and treated water is from the biological aerated filter below biological aerated filter 4
Water outlet 404 is discharged, a part by return duct 8 and reflux pump 7 be back to autotrophic denitrification device 3 (reflux ratio for 50~
100%), another part qualified discharge.
Application Example 1
Certain railway moderate and small stations sanitary sewage, C/N 1.0, with the utility model railway middle and small stations area low ratio of carbon to ammonium
Domestic sewage processing system and the processing method, when reflux ratio be 100% when, it can be achieved that in railway moderate and small stations sanitary sewage
COD removal rates are 80%, NH4 +- N is respectively 93.6% and 90.8% with TN removal rates, and TP removal rates are 84.5%.System is discharged
Water quality is reachable《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) the level-one A standards in.
Application Example 2
Another railway moderate and small stations sanitary sewage, C/N 2.0, with the utility model railway middle and small stations area low-carbon and nitrogen
Than domestic sewage processing system and the processing method, when reflux ratio is 50%, it can be achieved that railway moderate and small stations sanitary sewage
Middle COD removal rates are 85%, NH4 +- N is respectively 96.7% and 93.3% with TN removal rates, and TP removal rates are 88%.System is discharged
Water quality is reachable《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) the level-one A standards in.
Anaerobism folded plate reaction in the utility model railway middle and small stations area's low ratio of carbon to ammonium sewage treatment unit and system
Device, into several baffling rooms, is equivalent to several UASB (upflow anaerobic sludge blanket reactor), folded plate makes by barrier partitions
Sewage elapses forward in eddy flow, has effectively continued sewage hydrolyzing acidification flow, when sewage is from bottom eddy flow into fashionable, makes substrate dirty
Mud is in suspended state and forms granule sludge, and anaerobic bacteria is sufficiently mixed with organic pollution, so as to fulfill biological treatment efficiency
Maximization.
Autotrophic denitrification dress in the utility model railway middle and small stations area's low ratio of carbon to ammonium sewage treatment unit and system
In putting, the autotrophic denitrification bacterium of packed bed load need not add organic carbon source, and the only presence of inorganic salts can complete anti-nitre
Change acts on, and therefore, autotrophic denitrification technology provides a kind of think of of high efficiency low cost for the mark processing that carries of railway low carbon-nitrogen ratio sewage
Road.
In autotrophic denitrification device in the utility model railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system,
In the autotrophic denitrification device of the nZVI/GAC compounded mixs of filling load Pd, the reaction mechanism of denitrogenation dephosphorizing is as follows：
Fe+2H2O=Fe2++H2+2OH- (1)
2Fe2++NO3 -+H2O=2Fe3++NO2 -+2OH- (2)
2NO2 -+3H2=N2↑+2H2O+2OH- (3)
Fe3++3OH-=Fe (OH)3↓ (4)
As shown in above-mentioned reaction (1), (2), (3), (4), in autotrophic denitrification device, pass through the three of Fe-C-Pd compositions
First light electrolysis system, NO3 -It is reduced to N2；Fe3+Fe (OH) is generated under alkaline condition3Flco carries out absorption as flocculant and removes
Phosphorus, so as to fulfill synchronous denitrification dephosphorizing.Pb/nZVI/GAC compounded mixs form ternary Inner electrolysis reaction system, make electron acceptor
It is multiplied, accelerates mass transfer rate of the pollutant to electrode surface, so as to improve denitrogenation dephosphorizing efficiency；In addition Pd can also effectively may be used
Prevent Fe/C hardened.
Biological aerated filter in the utility model railway middle and small stations area's low ratio of carbon to ammonium sewage treatment unit and system
Using lightweight cellular spherical floating stuffing, water distribution uniformity is carried out by disk water distributor, mass-transfer efficiency is high, while uniform in bottom
Aeration, the efficiency of transmission and utilization rate of oxygen are all very high, and aeration quantity is small, and the power consumption of oxygen supply is relatively low.Therefore effluent quality is good, no
It needs separately to set sedimentation basin, floor space is small, and capital expenditure saves.
The utility model proposes a kind of railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit and system and its sides
Method overcomes processing railway middle and small stations area sanitary sewage in the prior art without specific aim, poor denitrification and dephosphorization effect, operating cost
High, the defects of being difficult to reach discharge standard, the processing up to standard for railway middle and small stations area sanitary sewage provides a kind of high efficiency low cost
Thinking.
Claims (9)
1. a kind of railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit, including anaerobism folded plate reaction unit, the anti-nitre of autotrophy
Makeup is put and biological aerated filter；The anaerobism folded plate reaction unit is connected with the autotrophic denitrification device；The autotrophy
Denitrification device is connected with the biological aerated filter；
The anaerobism folded plate reaction unit includes anaerobism folded plate reaction unit water inlet, folded plate, baffle, baffling room, anaerobism folded plate
Reaction unit water outlet, gas collection hole, gas collecting tube and gas collecting apparatus；The anaerobism folded plate reaction unit water inlet is located at anaerobism folded plate
The top of reaction unit；Anaerobic reaction is partitioned into several baffling rooms by the baffle；The folded plate is vertically arranged to baffling room
Centre, so as to which flow be made to be flowed in eddy flow direction, the gas collection hole is arranged on the top of baffling room；The gas collection hole passes through gas collection
Pipe is connected with gas collecting apparatus；The anaerobism folded plate reaction unit water outlet is located at the lower part of anaerobism folded plate reaction unit；
The autotrophic denitrification device includes autotrophic denitrification device water inlet, packed bed, compounded mix and autotrophic denitrification and fills
Put water outlet；The autotrophic denitrification device water inlet is located at the lower part of autotrophic denitrification device, autotrophic denitrification device water outlet
Mouth is located at the top of autotrophic denitrification device, and water (flow) direction is up flow type, and the packed bed is located at the autotrophic denitrification device
Middle part, the compounded mix is located on the packed bed；
The biological aerated filter includes biological aerated filter water inlet, disk water distributor, filler, effluent of aeration biological filter
Mouth, aerator, air hose and wind turbine；The biological aerated filter water inlet is located at a side lower part of biological aerated filter；Institute
State disk water distributor be located at biological aerated filter top it is placed in the middle, carry out water distribution uniformity；The filler is located at biological aerated filter
Middle part；The effluent of aeration biological filter mouth is located at another side lower part of biological aerated filter, and sewage flows through packing layer, by exposing
The water outlet discharge of gas biofilter；Effluent of aeration biological filter mouth is connected with discharge pipe, while passes through return duct and reflux pump
It is connected with the bottom of autotrophic denitrification device；Aerator is uniformly laid on biofilter bottom, passes through air pipe line and wind
Machine is connected, and is aerated.
2. railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit according to claim 1, it is characterised in that：It is described
Folded plate is arranged side by side for three, and the baffle is arranged side by side for three, and the gas collection hole is arranged side by side for three, the aeration dress
Five are set to be arranged side by side.
3. railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit according to claim 1, it is characterised in that：It is described
Compounded mix is the nZVI/GAC compounded mixs for loading Pd, and the nZVI/GAC compounded mixs of the load Pd is spherical, the ball
The average grain diameter of the nZVI/GAC compounded mixs of shape load Pd is 0.5~1cm.
4. railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit according to claim 1, it is characterised in that：It is described
Filler in biological aerated filter is porous spherical floating stuffing, and the proportion of the porous spherical floating stuffing is less than 1g/cm3,
Average grain diameter is 1cm.
5. a kind of railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system, it is characterised in that：Including regulating reservoir, sewage disposal
Device, water inlet pipe, elevator pump, reflux pump, return duct and drainpipe；The sewage-treatment plant includes anaerobism folded plate reaction dress
It puts, autotrophic denitrification device and biological aerated filter；The regulating reservoir is anti-by water inlet pipe and elevator pump and the anaerobism folded plate
Device is answered to be connected；The anaerobism folded plate reaction unit is connected with the autotrophic denitrification device；The autotrophic denitrification dress
It puts and is connected with the biological aerated filter；The biological aerated filter passes through return duct and reflux pump and the autotrophic denitrification
Device is connected, and is on the other hand discharged by drainpipe；
The anaerobism folded plate reaction unit includes anaerobism folded plate reaction unit water inlet, folded plate, baffle, baffling room, anaerobism folded plate
Reaction unit water outlet, gas collection hole, gas collecting tube and gas collecting apparatus；The anaerobism folded plate reaction unit water inlet is located at anaerobism folded plate
The top of reaction unit；Anaerobic reaction is partitioned into several baffling rooms by the baffle；The folded plate is vertically arranged to baffling room
Centre, so as to which flow be made to be flowed in eddy flow direction, the gas collection hole is arranged on the top of baffling room；The gas collection hole passes through gas collection
Pipe is connected with gas collecting apparatus；The anaerobism folded plate reaction unit water outlet is located at the lower part of anaerobism folded plate reaction unit；
The autotrophic denitrification device includes autotrophic denitrification device water inlet, packed bed, compounded mix and autotrophic denitrification and fills
Put water outlet；The autotrophic denitrification device water inlet is located at the lower part of autotrophic denitrification device, autotrophic denitrification device water outlet
Mouth is located at the top of autotrophic denitrification device, and water (flow) direction is up flow type, and the packed bed is located at the autotrophic denitrification device
Middle part, the compounded mix is located on the packed bed；
The biological aerated filter includes biological aerated filter water inlet, disk water distributor, filler, effluent of aeration biological filter
Mouth, aerator, air hose and wind turbine；The biological aerated filter water inlet is located at a side lower part of biological aerated filter；Institute
State disk water distributor be located at biological aerated filter top it is placed in the middle, carry out water distribution uniformity；The filler is located at biological aerated filter
Middle part；The effluent of aeration biological filter mouth is located at another side lower part of biological aerated filter, and sewage flows through packing layer, by exposing
The water outlet discharge of gas biofilter；Effluent of aeration biological filter mouth is connected with discharge pipe, while passes through return duct and reflux pump
It is connected with the bottom of autotrophic denitrification device；Aerator is uniformly laid on biofilter bottom, passes through air pipe line and wind
Machine is connected, and is aerated.
6. railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system according to claim 5, it is characterised in that：It is described
Folded plate is arranged side by side for three, and the baffle is arranged side by side for three, and the gas collection hole is arranged side by side for three, the aeration dress
Five are set to be arranged side by side.
7. railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system according to claim 5, it is characterised in that：It is described
Compounded mix is the nZVI/GAC compounded mixs for loading Pd, and the nZVI/GAC compounded mixs of the load Pd is spherical, the ball
The average grain diameter of the nZVI/GAC compounded mixs of shape load Pd is 0.5~1cm.
8. railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system according to claim 5, it is characterised in that：It is described
Filler in biological aerated filter is porous spherical floating stuffing.
9. railway middle and small stations area low ratio of carbon to ammonium domestic sewage processing system according to claim 8, it is characterised in that：It is described
The proportion of porous spherical floating stuffing is less than 1g/cm3, average grain diameter 1cm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935178A (en) * | 2017-11-15 | 2018-04-20 | 中国铁道科学研究院 | A kind of railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit |
| CN112520849A (en) * | 2020-11-13 | 2021-03-19 | 安徽环境科技集团股份有限公司 | Low-carbon-nitrogen-ratio high-ammonia-nitrogen sewage treatment process and system |
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2017
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935178A (en) * | 2017-11-15 | 2018-04-20 | 中国铁道科学研究院 | A kind of railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit |
| CN112520849A (en) * | 2020-11-13 | 2021-03-19 | 安徽环境科技集团股份有限公司 | Low-carbon-nitrogen-ratio high-ammonia-nitrogen sewage treatment process and system |
| CN112520849B (en) * | 2020-11-13 | 2021-11-02 | 安徽环境科技集团股份有限公司 | Low-carbon-nitrogen-ratio high-ammonia-nitrogen sewage treatment process and system |
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