CN107162190A - A kind of IEM UF nitrogen enrichment Prepositive denitrification nitrification denitrogenation method and device - Google Patents
A kind of IEM UF nitrogen enrichment Prepositive denitrification nitrification denitrogenation method and device Download PDFInfo
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- CN107162190A CN107162190A CN201710455581.1A CN201710455581A CN107162190A CN 107162190 A CN107162190 A CN 107162190A CN 201710455581 A CN201710455581 A CN 201710455581A CN 107162190 A CN107162190 A CN 107162190A
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000012528 membrane Substances 0.000 claims abstract description 69
- 239000002351 wastewater Substances 0.000 claims abstract description 17
- 239000005416 organic matter Substances 0.000 claims abstract description 13
- 230000002572 peristaltic effect Effects 0.000 claims description 44
- 239000007788 liquid Substances 0.000 claims description 23
- 239000010802 sludge Substances 0.000 claims description 17
- 238000005341 cation exchange Methods 0.000 claims description 13
- 239000000243 solution Substances 0.000 claims description 12
- 238000005273 aeration Methods 0.000 claims description 11
- 238000001471 micro-filtration Methods 0.000 claims description 10
- 238000006396 nitration reaction Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 230000001546 nitrifying effect Effects 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 10
- 239000010865 sewage Substances 0.000 abstract description 9
- 238000003672 processing method Methods 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- 241000894006 Bacteria Species 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000005868 electrolysis reaction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000001651 autotrophic effect Effects 0.000 description 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 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 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000009935 nitrosation Effects 0.000 description 1
- 238000007034 nitrosation reaction Methods 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/005—Combined electrochemical biological processes
-
- 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
- C02F2209/03—Pressure
-
- 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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A kind of IEM UF nitrogen enrichment Prepositive denitrification nitrification denitrogenation method and device, belong to technical field of sewage, processing method for waste water is carried out according to following process flow steps：Membrane module IEM UF are to NH in waste water4 +It is enriched with and organic matter is separated；Aerobic nitrification is reacted；The anoxic denitrification for the organic matter being previously separated out is combined in apparatus for separating ammonia nitrogen (being also denitrification reactor)；Water outlet, is that can complete above-mentioned technological process, special implementation is scheduled.This method and device, with preferable organics removal and denitrification functions, in particular handle the not enough waste water of carbon source and high-enriched organics high ammonia-nitrogen wastewater provide a kind of processing method；Meanwhile, this method and device effectively can carry out denitrogenation using the organic matter isolated, energy-saving.
Description
Technical field
The nitrogen enrichment of membrane bio-reaction system is combined the invention belongs to technical field of sewage, more particularly to a kind of utilization
Minimizing technology and device.
Background technology
Low C/N is the typical water quality characteristic of China's city domestic sewage.Traditional biological denitrogenation technology is by nitrification
The removal of nitrogen is realized with denitrification, sufficient carbon source is the key of denitrifying bacterium efficient denitrification.But it is dirty handling low C/N
During water, because content of organics is relatively low, the carbon source that can be provided in sewage can not meet denitrification requirement so that tradition
Biological denitrification process runs into larger difficulty when handling low C/N sewage.
The problems such as carbon source deficiency and the not high nitrifier nitrification efficiency of low C/N sewage are handled for traditional denitrification process, Shen
Please person invented " a kind of to utilize the nitrogen enrichment for combining membrane bio-reaction system and minimizing technology and device " (patent No.：
ZL201310270168.X) this problem is solved.Run the system discovery and the ammonia nitrogen after enrichment is subjected to nitrification, nitrification
During aeration quantity it is larger, add energy consumption.But if stage control will be nitrified in Nitrification Stage, the nitrification stage will be reduced
25% aeration oxygen demand, greatlys save energy consumption.Therefore applicant has invented a kind of " IEM-UF nitrogen enrichment nitrosation denitrification
Denitrogenation method and the device " (patent No.：ZL201610405969.6).Simultaneously " a kind of using combining membrane bio-reaction system
Found in nitrogen enrichment and minimizing technology and device " system operation, to make membrane module have preferable NH4 +- N concentration effects, increase
Add an Electrode Field, but electrolysis large amount of organic while extra electric field, make the follow-up denitrifying carbon source not enough, this
One contradictory problems limit the nitrogen removal performance of ammonia nitrogen enrichment and system.
If in view of the above-mentioned problems, the denitrification stage can be made directly to be carried out in apparatus for separating ammonia nitrogen, then then can be straight
Connect using the COD in separator without by electrolysis, making denitrifying carbon source sufficient so as to which denitrification effect is good.Therefore in order to have
The existing low C/N domestic sewage denitrifyings of effect solution are less efficient, the problems such as energy consumption is larger, carbon source is not enough, and my invention is a kind of
IEM-UF nitrogen enrichment Prepositive denitrification nitrification denitrogenation method and device.The system separates the ammonia nitrogen and COD in water inlet in ammonia nitrogen
Concentration and separation is carried out in device, the ammonia nitrogen being then enriched with enters nitrator and carries out nitration reaction, by nitration reaction liquid through wriggling
Pumping, which is returned to, utilizes COD therein progress denitrification denitrogenations in apparatus for separating ammonia nitrogen (i.e. denitrification reactor).Denitrification reactor
It is preposition to reduce electrolysis in apparatus for separating ammonia nitrogen, so not only make full use of the organic matter isolated, while to improving
Ammonia nitrogen accumulation rate is also guaranteed, and a part of ferrous autotroph anti-nitration reaction can also occur for the system, improves denitrogenation
Effect.
" a kind of IEM-UF nitrogen enrichment Prepositive denitrification nitrification denitrogenation method and device " can effectively solve denitrification process carbon
The problem of source is not enough, while can also solve the competition of heterotroph and autotrophic bacterium in nitrifying process.
The content of the invention
The purpose of the present invention is to be directed to the problem of existing low C/N of processing is not higher than waste water treatment efficiency to utilize there is provided one kind
Ammonia nitrogen enrichment and minimizing technology and the device of membrane bio-reaction system are combined, this method and device have preferable organics removal
And denitrification functions, in particular handle the not enough waste water of carbon source and a kind of processing method is provided.
The purpose of the present invention is achieved through the following technical solutions：
A kind of IEM-UF nitrogen enrichment Prepositive denitrification nitrification nitrogen rejection facility, it is characterised in that：The device includes the ammonia of closing
Nitrogen separator (3), nitrator (16).Apparatus for separating ammonia nitrogen is denitrification reactor again, i.e., both unite two into one.
Apparatus for separating ammonia nitrogen (3) includes raw water water inlet peristaltic pump (1), and water inlet pipe (2), power supply (4), the time relay (5) is led
Line (6), electrode (7), agitator (8), membrane module C (9), pressure gauge (10), ammonia nitrogen pregnant solution water outlet peristaltic pump (11), ammonia nitrogen is rich
Liquid collecting outlet pipe (12).Raw water enters in apparatus for separating ammonia nitrogen by water inlet peristaltic pump in apparatus for separating ammonia nitrogen (3), membrane module C (9) position
In in apparatus for separating ammonia nitrogen；Membrane module C (9) is by milipore filter (or microfiltration membranes) (34) cation-exchange membrane (33) and with water conservancy diversion
The supporting plate (35) of groove (36) and hole (37) is constituted, and one of cation-exchange membrane, milipore filter (or microfiltration membranes) are located at respectively
Supporting plate both sides.Membrane module C delivery ports (32) and ammonia nitrogen pregnant solution outlet pipe (12), pressure gauge (10) and water outlet peristaltic pump (11)
It is sequentially connected, and by the control of the time relay (5).Electrode (7) is placed in apparatus for separating ammonia nitrogen (3), agitator (8) blade position
It is other in membrane module C (9)；The two poles of the earth of electrode (7) are connected with power supply (4) respectively through wire (6), and electrode anode is just to membrane module C (9)
Cation-exchange membrane (33), electrode cathode is just to milipore filter (or microfiltration membranes) (34).
Nitrator (16) includes nitrator water inlet pipe (14), nitrification water inlet peristaltic pump (15), aerator
(17), gas flowmeter (18), air pump (19), time control switch (20).In nitrator (16) aerator (17) with
Gas circuit pipeline, gas flowmeter (18) and air pump (19) are sequentially connected；Nitrified effluent pipe (21) and nitrified effluent peristaltic pump (22)
It is connected, the aeration head (17) in nitrator (16) is located at reactor lower part；
Denitrification reactor is apparatus for separating ammonia nitrogen, and two reactors of denitrification reactor and apparatus for separating ammonia nitrogen close two and are
One, including agitator (8), ammonia is connected by denitrification nitrification liquid water inlet pipe (23), denitrification nitrification liquid water inlet peristaltic pump (24)
Nitrogen enrichment liquid case (13), denitrification water outlet second pond is connected by denitrification water outlet peristaltic pump (25) and denitrification outlet pipe (26)
(27), denitrification water outlet second pond (27) also passes through denitrification sludge reflux peristaltic pump (28) and denitrification mud return line (29)
Denitrification reactor is connected, denitrification water outlet second pond (27) is additionally provided with secondary clarifier effluent peristaltic pump (30) and secondary clarifier effluent pipe
(31)。
Main-process stream：Raw water enters apparatus for separating ammonia nitrogen bottom through peristaltic pump of intaking；NH4 +In electric field masterpiece in apparatus for separating ammonia nitrogen
It is enriched with lower selectivity through cation-exchange membrane, the ammonia nitrogen pregnant solution being enriched with is enriched with outlet pipe by wriggling pumping through ammonia nitrogen
Enter to ammonia nitrogen pregnant solution collecting box；Ammonia nitrogen pregnant solution is drawn into nitrator in the presence of nitrification water inlet peristaltic pump；
Ammonia nitrogen pregnant solution is retracted to nitrified effluent water tank after nitration reaction, by nitrified effluent peristaltic pump and collected；Denitrification peristaltic pump
Nitrator water outlet is pumped into denitrification reactor (i.e. apparatus for separating ammonia nitrogen) the denitrification denitrogenation effect that carries out.
The enrichment of said apparatus progress ammonia nitrogen, nitrification, the method for denitrification denitrogenation, its feature are utilized the invention provides a kind of
It is：It has following process flow steps：
(1) waste water：After waste water is pressurized through intake pump, flowed into through water inlet pipe in apparatus for separating ammonia nitrogen；
(2) membrane module C is to NH in waste water4 +Enrichment and organic matter separation：In apparatus for separating ammonia nitrogen under electric field force effect, pass through
Influent ammonia nitrogen is enriched with by membrane module cationic exchange membrane, and water outlet ammonia nitrogen concentration is improved；Influent COD is trapped in by milipore filter
In apparatus for separating ammonia nitrogen, reduce the COD into the membrane module water outlet of nitrator；
(3) SBR nitration reactions：The ammonia nitrogen pregnant solution of collection is introduced into nitrator through peristaltic pump, NH4 +In aeration bar
NO is converted into by nitrifier under part3 -, form nitrification liquid and nitrification liquid be collected；
(4) denitrification reactor：The nitrification liquid of collection is entered into anti-nitration reaction through peristaltic pump by denitrification water inlet pipe
In device, by denitrifying bacterium using organic matter under anoxic conditions by NO3 -It is converted into N2, complete denitrogenation and the removal of organic matter；
(5) water outlet：By (4) step processing after water outlet enter second pond mud-water separation, second pond supernatant Chinese effluent,
Second pond sludge reflux is into denitrification reactor.
The invention provides a kind of ammonia nitrogen separation Prepositive denitrification nitrification denitrogenation method and device, it is characterised in that：Ammonia nitrogen
Ammonia nitrogen is enriched with by separator, and COD is retained in nitrifying water inlet due to apparatus for separating ammonia nitrogen in the nitrification stage, can avoid nitrifying process
Middle heterotroph and the competition of autotrophic bacterium, it is ensured that the Effec-tive Function of nitrification.Denitrification denitrogenation is to be returned to progress in apparatus for separating ammonia nitrogen,
COD is avoided in apparatus for separating ammonia nitrogen by electrolysis so that denitrification can make full use of organic matter, but also can form one
Divide ferrous iron autotroph denitrification, so as to carry out efficient denitrification.
The present invention compared with prior art, with advantages below and prominent effect：
1st, a kind of IEM-UF nitrogen enrichment Prepositive denitrification nitrification denitrogenation method and device, COD is trapped in using combined films
As denitrifying carbon source in apparatus for separating ammonia nitrogen, the denitrification stage is directly carried out in apparatus for separating ammonia nitrogen, can effectively be reduced
COD is consumed by electrolysis in apparatus for separating ammonia nitrogen, compared with original denitrification denitrogenation system being separately provided, system COD
Electrolysis is substantially reduced so that denitrification can make full use of more organic matters, promotes nitrate nitrogen clearance to increase by 38.8%,
So as to improve whole system denitrification effect.
2nd, due to having iron electrode in apparatus for separating ammonia nitrogen, tamed with suitable CMC model, denitrifying bacterium therein can also shape
Into a part of ferrous iron autotrophic denitrification bacterium, ferrous autotrophic denitrification reaction occurs wherein, with original denitrifying bacterium
Collective effect, so as to improve denitrification effect.Compared with there was only denitrifying bacterium denitrogenation before, the system nitrogen removal rate is added
10.5%.
3rd, the COD nitrified in water inlet is retained by the milipore filter in apparatus for separating ammonia nitrogen, eliminates heterotrophism in nitrifying process micro-
The biological competition with Autotrophic nitrification bacterium, the ammonia nitrogen supply nitrator after apparatus for separating ammonia nitrogen is enriched with, can be the steady of nitrification
Fixed operation offer condition, improves nitrification efficiency.
4th, for limitation of the traditional biological denitrification system to low C/N sanitary sewage disposals, by combined films IEM-UF and nitre
Change and front establishment method is combined, form IEM-UF combined films nitrogen enrichment Prepositive denitrification nitrification denitrification system, this is
Stability of uniting is strong, energy consumption is low, nitrogen removal rate is significantly improved.
Brief description of the drawings
A kind of nitrogen for utilization IEM-UF combination membrane bio-reaction systems that Fig. 1 provides for the present invention is enriched with Prepositive denitrification nitre
Change the method operation schematic diagram for going to denitrogenate.
In figure：1- raw water intake pump 2- raw water water inlet pipe 3- apparatus for separating ammonia nitrogen 4- power supply 5- time relays 6- is led
Line 7- electrode 8- agitator 9- membrane module C 10- pressure gauge 11- ammonia nitrogen pregnant solution water outlet peristaltic pump 12- ammonia nitrogen collection liquids
Outlet pipe 13- collecting box 14- nitrator water inlet pipes 15- nitrification water inlet peristaltic pump 16- nitrators 17- aerations
Device 18- gas flowmeter 19- air pump 20- time control switch 21- nitrified effluent pipe 22- nitrified effluent peristaltic pumps
23- denitrification nitrification liquid water inlet pipe 24- denitrifications nitrification liquid water inlet peristaltic pump 25- denitrification water outlet peristaltic pump 26- denitrifications
Outlet pipe 27- denitrification water outlet second pond 28- denitrification sludge reflux peristaltic pump 29- denitrification mud return lines 30- bis-
Sinking pool effluent peristaltic pump 31- secondary clarifier effluent pipes
Fig. 2 is the floor map of membrane module, and Fig. 3 is the diagrammatic cross-section of membrane module.
In figure：32- membrane modules C delivery ports 33- cation-exchange membrane 34- milipore filters (or microfiltration membranes) 35- supporting plates
The hole of 36- guiding gutters 37
Embodiment
Below in conjunction with the accompanying drawings 1 and embodiment explain detailedly, to further understand the present invention.
The present invention is to combine a kind of device of film process sanitary sewage using IEM-UF, including：Apparatus for separating ammonia nitrogen (anti-nitre
Change reactor), nitrator.Apparatus for separating ammonia nitrogen is cuboid, and effective volume is 20L.Wherein membrane module C, be by sun from
Proton exchange 33, milipore filter (or microfiltration membranes) 34 and the supporting plate 35 with guiding gutter 36 and hole 37 are constituted；Cation is handed over
Change film 33 and milipore filter (or microfiltration membranes) 34 is separately fixed at the two sides of supporting plate 35, battery lead plate is iron electrode.Denitrification is anti-
Device and apparatus for separating ammonia nitrogen is answered to unite two into one, culture has denitrifying bacterium in apparatus for separating ammonia nitrogen.Nitrator is cylindrical organic glass
Glass is made, and dischargeable capacity is 2.0L.Wherein nitrator is open-top receptacle, and denitrification reactor is closed container.
Cation-exchange membrane 33 of the present invention is from the friendship of the Japanese astom model CMS provided cation
Change film, milipore filter 34 is 0.1 μm for the aperture that certain domestic producer provides, membrane flux is 18.75-20.83L/m2.h milipore filter.
Carrying out practically step is as follows：
(1) raw water (waste water)：After waste water is pressurized through intake pump (1), flowed into through water inlet pipe (2) by 1-10ml/min of flow
In apparatus for separating ammonia nitrogen (3)；
(2) membrane module C is to NH in waste water4 +Enrichment and organic matter separation：Membrane module C (9) is provided with apparatus for separating ammonia nitrogen (3)
With agitator (8), membrane module C (9) is made up of cation-exchange membrane (33) and milipore filter (34), can be to NH in waste water4 +And have
Machine thing is enriched with and separated respectively, and stirring is well mixed solution；Membrane module C delivery ports (32) are enriched with outlet pipe with ammonia nitrogen
(12), pressure gauge
(10) it is sequentially connected with water outlet peristaltic pump (11), and by the control of the time relay (5), opens water outlet peristaltic pump
(11), adjustment flow is 1-9ml/min；Meanwhile, agitator (8) is put into apparatus for separating ammonia nitrogen (3) and run, its stirring vane
Other positioned at membrane module C (9), HRT is 5h-2.5d；The two poles of the earth of electrode (7) are connected with power supply (4) respectively through wire (6), and by sun
Extremely just to amberplex (33), negative electrode just to milipore filter (34), turns on the power (4), is adjusted to electric current for 0.05-0.3A, and
Keep constant；Water outlet peristaltic pump (11), under the control of the time relay (5), water outlet is that intermittent water outlet is water outlet peristaltic pump
Pumping time is 8 minutes:1-5 minutes, water outlet was enriched with outlet pipe (12) through ammonia nitrogen and reached in ammonia nitrogen enrichment liquid case (13), works as pressure
When power table (10) indicates numerical value more than 15kpa, membrane module C (9) need to be cleaned；
(3) SBR nitration reactions：The waste water that ammonia nitrogen is enriched with liquid case (13) is compacted by nitrification water inlet through nitrifying water inlet pipe (14)
Dynamic pump (15) is introduced into nitrator (16).It is activated sludge MLSS in 7.5-8.2, nitrator to nitrify inlet flow-patterm scope
For 3000-3500mg/L, aeration head (17) is arranged on reactor bottom, by gas flowmeter (18), and DO is in 0.4- for control
1.5mg/L.Passage time controller (20) makes nitrator be run using SBR modes, 0.5h of being intake in one of them cycle,
Aerated reaction 4-8h, stands 0.5-1h, draining 0.5h.NH4 +Under nitrifying activated sludge and aeration condition, nitrification liquid is formed；Will
Nitrification liquid is collected provides nitrogen source for the denitrification process of next stage.
(4) anti-nitration reaction：By nitrification liquid by denitrification water inlet pipe (23) through peristaltic pump (24), feeding denitrification reactor
Middle carry out denitrification, denitrification inlet flow-patterm scope is 7.0-7.8.Activated sludge MLSS is 3000- in denitrification reactor
3500mg/L, hydraulic detention time is 6h.Reactor is isolating oxygen environment, under the stirring of agitator (8), NO3 -In anti-nitre
Denitrification is carried out under the conditions of change activated sludge and organic matter.And then complete organic matter removal and denitrogenation.
(5) water outlet：By (4) step processing after water outlet enter second pond mud-water separation, second pond supernatant Chinese effluent,
Second pond sludge reflux is into denitrification reactor.
As a result：
When raw water is water distribution, its main water quality index average value is：NH4 +- N=60-80mg/L, COD=180-
200mg/L；Operating condition is：The peristaltic pump pumping time for controlling membrane module C water outlets is 8 minutes:5 minutes, flow of inlet water
For 5mL/min, membrane module C water flows are 4.8mL/min, and membrane module C electric currents are 0.2A, nitrator activated sludge
MLSS=3000mg/L, reacts 4h.Denitrification reactor activated sludge MLSS=3200mg/L, reacts 4h.Water outlet leading indicator
Average value can reach：COD=16.52mg/L, NH4 +- N=20.87mg/L, NO3 -- N=14.75mg/L, NO2 -- N=
0.26mg/L；Clearance average value is respectively：COD=90.82%, NH4 +- N=65.21%, TN=40.20%.
The peristaltic pump pumping time for controlling membrane module C water outlets is 8 minutes:5 minutes, flow of inlet water was 5mL/min, film
Component C water flows are 4.8mL/min, and membrane module C electric currents are 0.2A, nitrator activated sludge MLSS=3200mg/
L, reacts 6h.Denitrification reactor activated sludge MLSS=3000mg/L, reacts 4h.Water outlet leading indicator average value can reach
Arrive：COD=18.42mg/L, NH4 +- N=17.60mg/L, NO3 -- N=13.28mg/L, NO2 -- N=0.42mg/L；Clearance is put down
Average is respectively：COD=89.77%, NH4 +- N=70.67%, TN=47.8%.
Claims (2)
1. a kind of IEM-UF nitrogen enrichment Prepositive denitrification nitrification nitrogen rejection facility, it is characterised in that the device includes the ammonia nitrogen of closing
Separator (3), nitrator (16)；Apparatus for separating ammonia nitrogen is denitrification reactor again, i.e., both unite two into one；
Apparatus for separating ammonia nitrogen (3) includes raw water water inlet peristaltic pump (1), water inlet pipe (2), power supply (4), the time relay (5), wire
(6), electrode (7), agitator (8), membrane module C (9), pressure gauge (10), the enrichment of ammonia nitrogen pregnant solution water outlet peristaltic pump (11) ammonia nitrogen
Liquid outlet pipe (12)；Raw water enters in apparatus for separating ammonia nitrogen by water inlet peristaltic pump in apparatus for separating ammonia nitrogen (3), and membrane module C (9) is located at
In apparatus for separating ammonia nitrogen；Membrane module C (9) is by one of milipore filter or microfiltration membranes (34), cation-exchange membrane (33) and with leading
Supporting plate (35) composition of chute (36) and hole (37), cation-exchange membrane, milipore filter are located at supporting plate both sides respectively；Or
One of cation-exchange membrane, microfiltration membranes are located at supporting plate both sides respectively；Membrane module C delivery ports (32) and ammonia nitrogen pregnant solution outlet pipe
(12), pressure gauge (10) and water outlet peristaltic pump (11) are sequentially connected, and by the control of the time relay (5)；Electrode (7) is placed on
In apparatus for separating ammonia nitrogen (3), it is other that agitator (8) blade is located at membrane module C (9)；The two poles of the earth of electrode (7) are respectively and electric through wire (6)
Source (4) is connected, cation-exchange membrane of the electrode anode just to membrane module C (9), electrode cathode just to milipore filter or microfiltration membranes it
One；
Nitrator (16) includes nitrator water inlet pipe (14), nitrification water inlet peristaltic pump (15), aerator (17), gas
Flowmeter body (18), air pump (19), time control switch (20)；Aerator (17) and gas circuit pipe in nitrator (16)
Line, gas flowmeter (18) and air pump (19) are sequentially connected；Nitrified effluent pipe (21) is connected with nitrified effluent peristaltic pump (22), nitre
The aeration head (17) changed in reactor (16) is located at reactor lower part；
Denitrification reactor is apparatus for separating ammonia nitrogen, and two reactors of denitrification reactor and apparatus for separating ammonia nitrogen unite two into one, bag
Agitator (8) is included, ammonia nitrogen is connected by denitrification nitrification liquid water inlet pipe (23), denitrification nitrification liquid water inlet peristaltic pump (24) and is enriched with
Liquid case (13), denitrification water outlet second pond (27) is connected by denitrification water outlet peristaltic pump (25) and denitrification outlet pipe (26),
Denitrification water outlet second pond (27) is also connected by denitrification sludge reflux peristaltic pump (28) and denitrification mud return line (29)
Denitrification reactor, denitrification water outlet second pond (27) is additionally provided with secondary clarifier effluent peristaltic pump (30) and secondary clarifier effluent pipe
(31)。
2. application device as claimed in claim 1 carries out ammonia nitrogen enrichment, nitrification, the method for denitrification for Removing Nitrogen, it is characterised in that bag
Include following steps：
1) after waste water is pressurized through intake pump, flowed into through water inlet pipe with 1-10mL/min in apparatus for separating ammonia nitrogen；
2) in apparatus for separating ammonia nitrogen membrane module C to NH in waste water4 +Enrichment and organic matter separation：Membrane module C (9) is by cation-exchange membrane
(33) constituted with milipore filter, or membrane module C (9) is made up of cation-exchange membrane (33) and microfiltration membranes, to NH in waste water4 +And have
Machine thing is enriched with and separated respectively, and stirring is well mixed solution；Membrane module C delivery ports (32) are enriched with outlet pipe with ammonia nitrogen
(12), pressure gauge (10) and water outlet peristaltic pump (11) are sequentially connected, and by the control of the time relay (5), are opened water outlet and wriggled
Pump (11), adjustment flow is 1-9ml/min；Meanwhile, agitator (8) is put into apparatus for separating ammonia nitrogen (3) and run, its paddle
Piece is located at membrane module C (9) sides, and HRT is 5h-2.5d；The two poles of the earth of electrode (7) are connected with power supply (4) respectively through wire (6), and will
Anode is just to amberplex (33), and negative electrode just to milipore filter (34), turns on the power (4), is adjusted to electric current for 0.05-0.3A,
And keep constant；Water outlet peristaltic pump (11), under the control of the time relay (5), water outlet is that intermittent water outlet is that water outlet is wriggled
Pump pumping time is 8 minutes:1-5 minutes, water outlet was enriched with outlet pipe (12) through ammonia nitrogen and reached in ammonia nitrogen enrichment liquid case (13), when
When pressure gauge (10) indicates numerical value more than 15kpa, membrane module C (9) need to be cleaned；
3) SBR nitration reactions：The waste water that ammonia nitrogen is enriched with liquid case (13) is through nitrifying water inlet pipe (14) by nitrification water inlet peristaltic pump
(15) it is introduced into nitrator (16)；Inlet flow-patterm scope is nitrified for 7.5-8.2, activated sludge MLSS is in nitrator
3000-3500mg/L, aeration head (17) is arranged on reactor bottom, by gas flowmeter (18), and DO is in 0.4-1.5mg/ for control
L；Passage time controller (20) makes nitrator be run using SBR modes, 0.5h of being intake in one of them cycle, and aeration is anti-
4-8h is answered, 0.5-1h, draining 0.5h is stood；NH4 +Under nitrifying activated sludge and aeration condition, nitrification liquid is formed；
4) anti-nitration reaction：By nitrification liquid by denitrification water inlet pipe (23) through entering in peristaltic pump (24), feeding denitrification reactor
Row denitrification, denitrification inlet flow-patterm scope is 7.0-7.8；Activated sludge MLSS is 3000-3500mg/L in denitrification reactor,
Hydraulic detention time is 6h；Reactor is isolating oxygen environment, and denitrification is carried out under the stirring of agitator (8)；And then complete
Organic matter removal and denitrogenation；
5) water outlet：Water outlet enters second pond mud-water separation, second pond supernatant Chinese effluent, second pond after the 4) step processing
Sludge reflux is into denitrification reactor.
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| CN108793391A (en) * | 2018-05-31 | 2018-11-13 | 济南大学 | A kind of device and method of Fe-C electrodes collaboration aerobic particle mud processing antibiotic medicine waste water |
| CN108862837A (en) * | 2018-06-26 | 2018-11-23 | 北京工业大学 | A kind of denitrification fuel cell coupling IEM-UF nitrogen enrichment combined films nitrification nitrogen rejection facility |
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Application publication date: 20170915 |