CN105923770A - Method and device for sewage denitrification by coupling of shortcut nitrification, anaerobic ammonia oxidation and shortcut denitrification - Google Patents
Method and device for sewage denitrification by coupling of shortcut nitrification, anaerobic ammonia oxidation and shortcut denitrification Download PDFInfo
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- CN105923770A CN105923770A CN201610424196.6A CN201610424196A CN105923770A CN 105923770 A CN105923770 A CN 105923770A CN 201610424196 A CN201610424196 A CN 201610424196A CN 105923770 A CN105923770 A CN 105923770A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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Abstract
The invention belongs to the field of biological sewage treatment and discloses a method and a device for sewage denitrification by coupling of shortcut nitrification, anaerobic ammonia oxidation and shortcut denitrification. The method includes: allowing domestic sewage to enter a shortcut nitrification SBR (sequencing batch reactor) through a peristaltic pump, performing anaerobic stirring, using a carbon source in fed water to realize denitrification for removing NO2<->-N remained in the last period, performing low-oxygen aeration stirring to convert NH4<+>-N in the fed water into NO2<->-N, settling, draining, discharging water into a regulation water tank, mixing with the domestic sewage with part of organics removed, and entering an anaerobic ammonia oxidation and shortcut denitrification coupled denitrification UASB (upflow anaerobic sludge blanket) reactor to realize thorough denitrification. According to the method, the carbon source in the domestic sewage can be adopted for shortcut denitrification to reduce NO3<->-N generated in anaerobic ammonia oxidation into the NO2<->-N which can be used by anaerobic ammonium oxidation bacteria, so that excellent denitrification effects are achieved while the carbon source in the domestic sewage is effectively used.
Description
Technical field
The present invention relates to technical field of biological sewage treatment, particularly relate to short distance nitration and connect Anammox
Coupling short-cut denitrification carries out the apparatus and method of sewage water denitrification.
Background technology
Use chemical fertilizer due to a large amount of and discharge all kinds of sewage, having resulted in many lakes, river water nitrogen phosphorus
Severe contamination causes body eutrophication, and the eutrophication of water body is the great environmental that society faces
One of problem, economical and effectively control body eutrophication and have become as environmental problem urgently to be resolved hurrily,
And the denitrogenation dephosphorizing of sewage can effectively prevent and treat body eutrophication.
The biological treatment of sewage develops towards direction efficient, low energy consumption, and short distance nitration can save
About aeration energy consumption, Anammox reaction is hypoxia response, is not required to aeration, saves the energy, is autotrophy
Reaction, is not required to carbon source, it is achieved zero interpolation of organic carbon source, and the sludge quantity of generation is few, can save mud
Processing cost, additionally, Anammox coupling short-cut denitrification can make full use of residual carbon in former water
Source, is nitrite by the product nitrate reduction of Anammox, then by anaerobic ammonia oxidizing bacteria profit
With, thus realize the denitrogenation of the more degree of depth.
In a word, short distance nitration makes ammonium oxidation the most energy-conservation, and Anammox coupling short-cut denitrification can
Realize the efficient of low-carbon (LC) sanitary sewage and advanced nitrogen, be the saprobia with application prospect and value
Process technique.
Summary of the invention
It is an object of the invention to provide a kind of short distance nitration to connect Anammox coupling short-cut denitrification and enter
The apparatus and method of row sewage water denitrification, it is achieved the efficient and advanced nitrogen of sewage, by short distance nitration, detest
During anaerobic ammonium oxidation and short-cut denitrification technical combinations are applied to bio-denitrifying sewage so that this technique
Compared with tradition denitrification process, reduce the oxygen consumption of aeration section, it is achieved that zero interpolation of organic carbon source.
Additionally, short-cut denitrification process can utilize the residue carbon source in former water, Anammox is produced
Nitrate reduction is nitrite, is utilized by anaerobic ammonia oxidizing bacteria the most again, thus realizes the most energy-conservation
Denitrogenation with the degree of depth.
It is an object of the invention to solve by the following technical programs: short distance nitration connects Anammox
Coupling short-cut denitrification carries out the device of sewage water denitrification, it is characterised in that include sanitary sewage raw water box 1,
Short distance nitration sbr reactor device 2, short distance nitration go out water tank 3, part de-carbon sbr reactor device 4,
Regulating tank 5, Anammox coupling short-cut denitrification UASB reactor 6；Wherein said life dirt
Water raw water box is connected with short distance nitration sbr reactor device 2 by the first intake pump 2.1, short distance nitration
Sbr reactor device 2 first outlet valve 2.7 goes out water tank 3 and is connected with short distance nitration；Sanitary sewage is former
Water tank 1 is connected with part de-carbon sbr reactor device 4 by the second intake pump 4.1, part de-carbon SBR
Reactor 4 second outlet valve 4.7 is connected with regulating tank 5；Short distance nitration goes out water tank 3 by the
Three intake pumps 6.1 are connected with Anammox coupling short-cut denitrification UASB reactor 6；Regulation
Water tank 5 couples short-cut denitrification UASB reactor 6 by the 4th intake pump 6.2 with Anammox
It is connected；After process, sewage is finally by Anammox coupling short-cut denitrification UASB reactor 6
Delivery port 6.6 is discharged；
Described short distance nitration sbr reactor device 2 has the first paddle 2.3, air pump 2.4, gas flowmeter
2.5, aeration head the 2.6, first outlet valve 2.7 and the first mud discharging mouth 2.8；
Described part de-carbon sbr reactor device 4 has the second paddle 4.3, air pump 4.4, gas flowmeter
4.5, aeration head the 4.6, second outlet valve 4.7 and the second mud discharging mouth 4.8；
Described Anammox coupling short-cut denitrification UASB reactor 6 has sample tap 6.3, refluxing opening
6.4, three phase separator 6.5, delivery port 6.6, overfall 6.7, exhaust outlet 6.8 and airbag 6.9.
Sewage handling process in this device is: city domestic sewage passes through the first intake pump 2.1 by giving birth to
Live in sewage raw water box 1 suction short distance nitration sbr reactor device 2；At short distance nitration sbr reactor device 2
Inside carrying out anoxia stirring, denitrifying bacterium utilizes the carbon source in former water by remaining for upper cycle NO2 --N reduces
For N2, then carry out low-oxygen aeration stirring, NH4 +-N is oxidized to NO2 --N, afterwards sedimentation and drawing,
Containing NO in draining2 --N；Sanitary sewage is taken out by sanitary sewage raw water box 1 by the second intake pump 4.1
Enter in part de-carbon sbr reactor device 4, in part de-carbon sbr reactor device 4, carry out micro-aeration,
Part organic carbon in sanitary sewage is removed, then sedimentation and drawing, containing NH in draining4 +-N and portion
Divide remaining organic carbon source；By anti-to draining and the part de-carbon SBR of short distance nitration sbr reactor device 2
Answer the draining of device 4 respectively by the 3rd intake pump 6.1 and the 4th intake pump 6.2 suction Anammox coupling
Closing in short-cut denitrification UASB reactor 6, anaerobic ammonia oxidizing bacteria is by the NH in mixed liquor4 +-N and
NO2 --N is converted into N2And NO3 --N, meanwhile, short-cut denitrification bacterium utilizes in sanitary sewage surplus
The NO that Anammox reaction is produced by remaining organic carbon source3 --N is reduced to NO2 --N, and again by
Anaerobic ammonia oxidizing bacteria utilizes, and water outlet is discharged eventually through delivery port 6.6.
Present invention also offers a kind of short distance nitration to connect Anammox coupling short-cut denitrification and carry out sewage
The method of denitrogenation, its concrete startup and operating procedure are as follows:
1) system starts: short distance nitration mud is added to short distance nitration sbr reactor device 2, makes inoculation
In post-reactor, activated sludge concentration reaches 2000-3000mg/L；By municipal sewage plant excess sludge or
The activated sludge with denitrogenation dephosphorizing performance is added to part de-carbon sbr reactor device 4, anti-after making inoculation
In answering device, activated sludge concentration reaches 1500-3000mg/L；By anti-to anaerobic ammonium oxidation sludge and short distance nitre
Change mud and be added to Anammox coupling short-cut denitrification according to the ratio that sludge quality concentration is 3:1
UASB reactor 4, in making reactor, sludge concentration reaches 1500-2000mg/L；
2) regulation operation when running:
City domestic sewage is added sanitary sewage raw water box 1, starts the first intake pump 2.1 city is raw
Sewage suction short distance nitration sbr reactor device 2 alive, when short distance nitration sbr reactor device 2 runs, weekly
Phase elder generation's anoxia stirring 30-50min, aeration agitation 150-240min the most again, and control short distance nitration
In sbr reactor device, dissolved oxygen concentration is 0.5-2mg/L, when flex point occurs in pH curve, stops aeration
Stirring, sedimentation and drawing, draining ratio is for 70%-80%, and water outlet enters short distance nitre through the first outlet valve 2.7
Dissolve water tank 3；Start the second intake pump 4.1 by anti-for city domestic sewage suction part de-carbon SBR
Answer device 4, when part de-carbon sbr reactor device 4 runs, each cycle aeration 15-25min, and control portion
In dividing de-carbon sbr reactor device 4, dissolved oxygen is between 2-3mg/L, and then sedimentation and drawing, draining ratio is
70%-80%, water outlet enters regulating tank 5 through the second outlet valve 4.7；Start the 3rd intake pump 6.1 He
4th intake pump 6.2 makes water outlet and the part de-carbon sbr reactor device 4 of short distance nitration sbr reactor device 2
Water outlet couple short with the flow suction Anammox of 29-33mL/min and 23-26mL/min respectively
Journey denitrification UASB reactor 6, is then discharged by delivery port 6.6.
The short distance nitration of the present invention connects Anammox coupling short-cut denitrification and carries out the device of sewage water denitrification
With method, have the advantage that
The most former water after carrying out part de-carbon, can remainder organic carbon source, and enter into Anammox
In coupling short-cut denitrification reactor, provide organic carbon source for short-cut denitrification, so can save aeration
Requisite oxygen consumption and energy consumption, make full use of the organic carbon source in former water simultaneously.
2. pass through part de-carbon and short distance nitration can be that Anammox reaction provides stable NH4 +-N and
NO2 --N, provides organic carbon source for short-cut denitrification, and short-cut denitrification reaction can be anti-by Anammox
The NO that should produce3 --N is reduced to NO2 --N, then utilized by anaerobic ammonia oxidizing bacteria, thus realize the degree of depth
Denitrogenation.
3. there is anaerobic ammonia oxidizing bacteria and denitrifying bacterium to NO in Anammox coupling denitrification2 --N's is competing
Striving, and Anammox coupling short-cut denitrification can be avoided, short-cut denitrification can be by NO simultaneously3 --N
It is reduced to NO2 --N, and as the substrate of Anammox reaction.
In sum, a kind of short distance nitration that the present invention provides connects Anammox coupling short-cut denitrification
Carry out the apparatus and method of sewage water denitrification, by short distance nitration, Anammox, short-cut denitrification application
In sewage water denitrification process, oxygen consumption and energy consumption can be reduced compared with traditional biological denitrogenation, efficiently utilize former water
In organic carbon source, reach the effect of advanced nitrogen, be the saprobia with application prospect and value
Process technique.
Accompanying drawing explanation
Fig. 1 be short distance nitration of the present invention connect Anammox coupling short-cut denitrification carry out sewage water denitrification
The structural representation of device.
In figure, 1 is sanitary sewage raw water box；2 is short distance nitration sbr reactor device；3 is short distance nitration
Go out water tank；4 is part de-carbon sbr reactor device；5 is regulating tank；6 couple for Anammox
Short-cut denitrification UASB reactor；1.1 is the first overflow pipe；1.2 is the first blow-down pipe；2.1 is
One intake pump；2.2 is the first agitator；2.3 is the first paddle；2.4 is air pump；2.5 is gas
Flowmeter；2.6 is aeration head；2.7 is the first outlet valve；2.8 is the first mud discharging mouth；2.9 is pH/DO
Instrument；2.10 pop one's head in for DO；2.11 pop one's head in for pH；3.1 is the second overflow pipe；3.2 is the second emptying
Pipe；4.1 is the second intake pump；4.2 is the second agitator；4.3 be the second paddle；4.4 is air pump；
4.5 is gas flowmeter；4.6 is aeration head；4.7 is second row water valve；4.8 be the second mud discharging mouth；
4.9 pop one's head in for DO；4.10 is DO instrument；5.1 is the 3rd overflow pipe；5.2 is the 3rd blow-down pipe；6.1
It it is the 3rd intake pump；6.2 is the 4th intake pump；6.3 is sample tap；6.4 is refluxing opening；6.5 is three
Phase separator；6.6 is delivery port；6.7 is overfall；6.8 is exhaust outlet；6.9 is airbag.
Detailed description of the invention
The present invention is described further with embodiment below in conjunction with the accompanying drawings: as it is shown in figure 1, short distance
Nitrification connects Anammox coupling short-cut denitrification and carries out the device of sewage water denitrification, it is characterised in that bag
Include sanitary sewage raw water box 1, short distance nitration sbr reactor device 2, short distance nitration go out water tank 3, part
The coupling short-cut denitrification UASB reaction of de-carbon sbr reactor device 4, regulating tank 5, Anammox
Device 6；Wherein said sanitary sewage raw water box is by the first intake pump 2.1 and short distance nitration sbr reactor
Device 2 is connected, and short distance nitration sbr reactor device 2 first outlet valve 2.7 and short distance nitration go out water tank
3 are connected；Sanitary sewage raw water box 1 is by the second intake pump 4.1 and part de-carbon sbr reactor device 4
Being connected, part de-carbon sbr reactor device 4 second outlet valve 4.7 is connected with regulating tank 5；Short
Journey nitrified effluent water tank 3 couples short-cut denitrification UASB by the 3rd intake pump 6.1 with Anammox
Reactor 6 is connected；It is anti-that regulating tank 5 couples short distance by the 4th intake pump 6.2 with Anammox
Nitrification UASB reactor 6 is connected；After process, sewage is finally coupled the anti-nitre of short distance by Anammox
The delivery port 6.6 changing UASB reactor 6 is discharged；
Described short distance nitration sbr reactor device 2 has the first paddle 2.3, air pump 2.4, gas flowmeter
2.5, aeration head the 2.6, first outlet valve the 2.7, first mud discharging mouth 2.8；
Described part de-carbon sbr reactor device 4 has the second paddle 4.3, air pump 4.4, gas flowmeter
4.5, aeration head the 4.6, second outlet valve the 4.7, second mud discharging mouth 4.8；
Described Anammox coupling short-cut denitrification UASB reactor 6 has sample tap 6.3, refluxing opening
6.4, three phase separator 6.5, delivery port 6.6, overfall 6.7, exhaust outlet 6.8, airbag 6.9.
In process of the test, specific experiment water takes from Beijing University of Technology's dependents' district sanitary sewage, specifically
Water quality is as follows: COD concentration is 180～270mg/L, NH4 +-N concentration is 50～70mg/L, NO2 --N
Concentration ＜ 1mg/L, NO3 --N concentration is 0.1～1.4mg/L, PO4 3--P concentration is 4～7.5mg/L,
PH value is 7.3～7.6.Pilot system as it is shown in figure 1, each reactor all uses lucite to make,
Short distance nitration sbr reactor device 2 dischargeable capacity is 15L, and part de-carbon sbr reactor device 4 effectively holds
Amassing as 10L, Anammox coupling short-cut denitrification UASB reactor 6 dischargeable capacity is 6L.
Carrying out practically operation is as follows:
1) system starts: short distance nitration mud is added to short distance sbr reactor device 2, anti-after making inoculation
In answering device, activated sludge concentration reaches 2000-3000mg/L；By municipal sewage plant excess sludge or have
The activated sludge of denitrogenation dephosphorizing performance is added to part de-carbon sbr reactor device 4, makes inoculation post-reactor
Interior activated sludge concentration reaches 1500-3000mg/L；By dirty to anaerobic ammonium oxidation sludge and short-cut denitrification
It is anti-that mud is added to Anammox coupling short-cut denitrification UASB according to the ratio that sludge concentration is 3:1
Answering device 4, in making reactor, sludge concentration reaches 1500-2000mg/L；
2) regulation operation when running:
City domestic sewage is added sanitary sewage raw water box 1, starts the first intake pump 2.1 city is raw
Sewage suction short distance nitration sbr reactor device 2 alive, when short distance nitration sbr reactor device 2 runs, weekly
Phase elder generation's anoxia stirring 30-50min, aeration agitation 150-240min the most again, and control short distance nitration
In sbr reactor device, dissolved oxygen concentration is 0.5-2mg/L, when flex point occurs in pH curve, stops aeration
Stirring, sedimentation and drawing, draining ratio is for 70%-80%, and water outlet enters short distance nitre through the first outlet valve 2.7
Dissolve water tank 3, ran for 4 cycles every day；Start the second intake pump 4.1 by city domestic sewage suction
Part de-carbon sbr reactor device 4, when part de-carbon sbr reactor device 4 runs, each cycle aeration 15-25
Min, and dissolved oxygen is between 2-3mg/L in controlling reactor, then sedimentation and drawing, draining ratio is
70%-80%, water outlet enters regulating tank 5 through the second outlet valve 4.7, ran for 6 cycles every day；Start
3rd intake pump 6.1 and the 4th intake pump 6.2 make water outlet and the sanitary sewage of part de-carbon of short distance nitration
The anti-nitre of short distance is coupled respectively with the flow suction Anammox of 29-33mL/min and 23-26mL/min
Change UASB reactor 6, then discharged by delivery port 6.6.
Result of the test shows: after stable, and in the draining of short distance nitration sbr reactor device, COD is dense
Degree is 30～45mg/L, NH4 +-N ＜ 1mg/L, NO2 --N concentration is 42～48mg/L, NO3 --N
＜ 2mg/L；In the draining of part de-carbon sbr reactor device, COD concentration is 70～95mg/L, NH4 +-N
Concentration is 55～70mg/L, NO2 --N ＜ 2mg/L, NO3 --N ＜ 2mg/L；Anammox couples
In short-cut denitrification UASB reactor water outlet, COD concentration is 40～50mg/L, NH4 +-N ＜ 1
Mg/L, NO2 --N ＜ 1mg/L, NO3 --N ＜ 5mg/L, water outlet is up to one-level emission standard A.
Claims (2)
1. short distance nitration connects Anammox coupling short-cut denitrification and carries out the device of sewage water denitrification, its
It is characterised by, including sanitary sewage raw water box (1), short distance nitration sbr reactor device (2), short distance
Nitrified effluent water tank (3), part de-carbon sbr reactor device (4), regulating tank (5), anaerobism ammonia
Oxidation coupling short-cut denitrification UASB reactor (6)；Wherein said sanitary sewage raw water box passes through
First intake pump (2.1) is connected with short distance nitration sbr reactor device (2), short distance nitration SBR
Reactor (2) first outlet valve (2.7) goes out water tank (3) and is connected with short distance nitration；Life
Sewage raw water box (1) passes through the second intake pump (4.1) and part de-carbon sbr reactor device (4) phase
Connect, part de-carbon sbr reactor device (4) second outlet valve (4.7) and regulating tank (5) phase
Connect；Short distance nitration is gone out water tank (3) and is coupled with Anammox by the 3rd intake pump (6.1)
Short-cut denitrification UASB reactor (6) is connected；Regulating tank (5) passes through the 4th intake pump
(6.2) it is connected with Anammox coupling short-cut denitrification UASB reactor (6)；After process
Sewage is finally by the delivery port (6.6) of Anammox coupling short-cut denitrification UASB reactor (6)
Discharge；
Described short distance nitration sbr reactor device (2) have the first paddle (2.3), air pump (2.4),
Gas flowmeter (2.5), aeration head (2.6), the first outlet valve (2.7) and the first mud discharging mouth (2.8)；
Described part de-carbon sbr reactor device (4) have the second paddle (4.3), air pump (4.4),
Gas flowmeter (4.5), aeration head (4.6), the second outlet valve (4.7) and the second mud discharging mouth (4.8)；
Described Anammox coupling short-cut denitrification UASB reactor (6) have sample tap (6.3),
Refluxing opening (6.4), three phase separator (6.5), delivery port (6.6), overfall (6.7), exhaust outlet
And airbag (6.9) (6.8).
2. the method that device described in application claim 1 carries out sewage water denitrification, it is characterised in that bag
Include following steps:
1) system starts: short distance nitration mud is added to short distance nitration sbr reactor device (2), makes
In inoculation post-reactor, activated sludge concentration reaches 2000-3000mg/L；By municipal wastewater treatment plant residue dirt
Mud or have the activated sludge of denitrogenation dephosphorizing performance and be added to part de-carbon sbr reactor device (4), makes
In inoculation post-reactor, activated sludge concentration reaches 1500-3000mg/L；By anaerobic ammonium oxidation sludge and
Short-cut denitrification mud is added to Anammox coupling according to the ratio that sludge quality concentration is 3:1
Short-cut denitrification UASB reactor (4), in making reactor, sludge concentration reaches 1500-2000mg/L；
2) regulation operation when running:
City domestic sewage is added sanitary sewage raw water box (1), starts the first intake pump (2.1)
By city domestic sewage suction short distance nitration sbr reactor device (2), short distance nitration sbr reactor device (2)
During operation, each cycle elder generation anoxia stirring 30-50min, aeration agitation 150-240min the most again, and
In control short distance nitration sbr reactor device, dissolved oxygen concentration is 0.5-2mg/L, when turning occurs in pH curve
During point, stopping aeration agitation, sedimentation and drawing, draining ratio is for 70%-80%, and water outlet is through the first water outlet
Valve (2.7) enters short distance nitration and goes out water tank (3)；Start the second intake pump (4.1) city is raw
Sewage suction part de-carbon sbr reactor device (4) alive, part de-carbon sbr reactor device (4) is run
Time, each cycle aeration 15-25min, and control part de-carbon sbr reactor device (4) interior dissolved oxygen
Between 2-3mg/L, then sedimentation and drawing, draining is than for 70%-80%, and water outlet is through the second water outlet
Valve (4.7) enters regulating tank (5)；Start the 3rd intake pump (6.1) and the 4th intake pump (6.2)
Make water outlet and the water outlet of part de-carbon sbr reactor device (4) of short distance nitration sbr reactor device (2)
Short distance is coupled respectively anti-with the flow suction Anammox of 29-33mL/min and 23-26mL/min
Nitrification UASB reactor (6), is then discharged by delivery port (6.6).
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