CN108217950A - The device and method that FNA reinforcement sludges ferment and realize sewerage short-cut denitrification dephosphorization - Google Patents
The device and method that FNA reinforcement sludges ferment and realize sewerage short-cut denitrification dephosphorization Download PDFInfo
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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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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
- C02F11/00—Treatment of sludge; Devices therefor
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- C02F3/308—Biological phosphorus removal
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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
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- C02F2101/105—Phosphorus compounds
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
FNA reinforcement sludges ferment and the apparatus and method of realization sewerage short-cut denitrification dephosphorization, belong to sewage sludge process field.The device includes：Raw water box, sbr reactor device, intermediate water tank, UASB reactors, Treatment of Sludge reactor, sludge fermentation tank.Free nitrous acid (FNA) is inhibited nitrite oxidizing bacteria to realize short distance nitration with both hydrolysis acidifications being promoted to be combined as sludge fermentation pre-treatment step by this method, short distance nitration reactor spoil disposal is returned through FNA processing rear portions, and another part enters sludge fermentation tank.Sbr reactor device elder generation anoxic denitrification removal extra nitrous of upper period, anaerobic phosphorus release again, the concurrent first portion short distance nitration of aerobic phosphorus absorption, water outlet enters UASB together with sludge fermentation liquid, with nitrous by anaerobic ammonia oxidizing bacteria autotrophic denitrification, remaining nitrous removes part ammonia nitrogen with organic matter denitrification in the Nitrate-N Use sludge fermentation liquid generated.The present invention promotes internal carbon source to develop and realize municipal sewage denitrogenation dephosphorizing, and mud decrement using FNA, reduces sewage disposal energy consumption.
Description
Technical field
The present invention relates to the apparatus and method of a kind of fermentation of FNA reinforcement sludges and realization sewerage short-cut denitrification dephosphorization, belong to
Technical field of biological sewage treatment.The innovation inhibits free nitrous acid (FNA) nitrite oxidizing bacteria realization short
Journey nitrification is removed with both hydrolysis acidifications being promoted to be combined as sludge fermentation pre-treatment step in realization short distance nitration biological denitrificaion
Reinforcement sludge internal carbon source is developed while phosphorus, and the processing disposition for urban domestic sewage sludge provides a new approaches.
Background technology
Municipal sewage plant of China mostly realizes nitrogen in sewage using traditional nitration denitrification biological denitrification process at present
Qualified discharge.Ammonia oxidation bacteria (AOB) is using oxygen as electron acceptor in traditional biological denitrification process, by NH4 +It is oxidized to NO2 -, with
Nitrite oxidizing bacteria (NOB) is using oxygen as electron acceptor afterwards, by NO2 -It is oxidized to NO3 -, last denitrifying bacterium made with organic matter
For electron donor, by NO3 -It is reduced to N2, it is finally reached the purpose for removing nitrogen from sewage.The discovery of anaerobic ammonia oxidizing bacteria makes dirt
Water autotrophic denitrification is possibly realized, and anaerobic ammonia oxidizing bacteria utilizes NO2 -NH is aoxidized as electron acceptor4 +Generate N2, the process is with inorganic
Carbon does not need to organic matter as carbon source, so as to achieve the purpose that denitrification of autotrophic organism as carbon source.And Anammox biology skill
The key that art is applied to municipal sewage denitrogenation processing is exactly substrate NO2 -Stablize obtain.
Short distance nitration technology is ammonia oxidizing bacteria by NH4 +It is oxidized to NO2 -, substrate NO can be provided for Anammox2 -.Mesh
The preceding stable Technical comparing for realizing municipal sewage short distance nitration is few, therefore stablizes and realize that municipal sewage short distance nitration is limitation city
The bottleneck of anerobic sowage ammoxidation autotrophic denitrification.Recent studies have found that inhibition of the nitrous acid (FNA) to NOB that dissociate under anoxia condition
Effect is more than the inhibition to AOB, is advantageously implemented short distance nitration.
Biological denitrification process based on activated sludge process is widely used to field of municipal sewage treatment, but a large amount of in sewage
Organic substance be transferred in sludge sludge yield caused to increase, aggravate the investment of sewage treatment plant and operation burden.In addition, city
The characteristics of city's sewage low-carbon nitrogen ratio, leads to that outer carbon source must be added in its biological denitrification process, this results in the fortune of sewage treatment plant
Row expense greatly increases.Therefore, realize excess sludge minimizing and recycling and exploitation sludge internal carbon source, it has also become city
The difficult point and emphasis of sewage disposal.Sludge fermentation can realize that organic matter transformation is volatile fatty acid (VFAs) in sludge, and
Afterwards as the available advantage carbon source of microorganism in biological denitrification process.However, sludge decomposition is typically considered excess sludge
Rate-limiting step in fermentation process.Sludge fermentation is generally by pyrolysis, physics (ultrasound), electricity and chemical sludge pre-treatment techniques
Cause microbial cell broken wall.But above-mentioned technology is big (high temperature or high pressure) there are energy consumption, need a large amount of chemical substances (chlorine, it is smelly
Oxygen and basicity etc.) and pollution environment the problems such as.Therefore, a kind of sludge pre-treatment techniques are found to improve biodegradability particularly
It is important.Pertinent literature pre-processes excess sludge using FNA, promotes sludge due to the microorganism in excess sludge is inactivated
Disintegrate, improve excess sludge fermentation character.
Invention content
To solve the above-mentioned problems, the purpose of the present invention is inhibit nitrite oxidizing bacteria real free nitrous acid (FNA)
Existing short distance nitration takes off with both hydrolysis acidifications being promoted to be combined as sludge fermentation pre-treatment step in realization short distance nitration biology
Reinforcement sludge internal carbon source is developed while nitrogen dephosphorization.Short distance nitration reactor spoil disposal is returned through FNA processing rear portions, another portion
Divide and enter sludge fermentation tank.Sbr reactor device elder generation anoxic denitrification removal extra nitrous of upper period, then anaerobic phosphorus release, aerobic phosphorus absorption
Concurrent first portion short distance nitration is discharged same sludge fermentation liquid and enters UASB reactors together, and part ammonia nitrogen passes through anaerobism with nitrous
Organic matter denitrification removes in ammonia oxidation bacteria autotrophic denitrification, remaining nitrous and the Nitrate-N Use sludge fermentation liquid generated, so as to
Realize the advanced nitrogen dephosphorization of sanitary sewage.
To achieve the above object, the present invention provides a kind of FNA reinforcement sludges fermentation and realizes sewerage short-cut denitrification dephosphorization
Device, including：Raw water box (1), sbr reactor device (2), intermediate water tank (3), UASB reactors (4), Treatment of Sludge reactor (5),
Sludge fermentation tank (6)；Raw water box (1) is supplied water by raw water intake pump (1.1) to sbr reactor device (2), and sbr reactor device (2) is equipped with
First temperature control device (2.1), the first agitating device (2.2), the first pH analyzers (2.6), DO analyzers (2.7), by being equipped with
Gas flowmeter (2.3), air valve (2.4), air compressor (2.5), aeration head (2.9) aerator be oxygenated, lead to
It crosses drain valve (2.8) water outlet and enters intermediate water tank (3), be discharged to excess sludge by mud valve I (2.10), sludge pump (2.11)
Treatment of Sludge reactor (5)；Intermediate water tank (3) is anti-by nitrification liquid intake pump (3.1) and nitrification liquid inlet valve (3.2) and UASB
Device (4) is answered to be connected；UASB reactors (4) are provided with gas collecting apparatus (4.1), outlet pipe (4.2), three phase separator (4.3), add
Tropical device (4.4), water-distributing device (4.5), internal circulation pump (4.6), interior circulating valve (4.7)；Treatment of Sludge reactor (5) is set
There are chemical feed pipe (5.1), the second agitating device (5.2), pass through mud valve II (5.3) and mud valve III (5.4) and sludge fermentation tank
(6) it is connected, by returned sludge valve (5.5) and return sludge pump (5.6) by processed sludge reflux to sbr reactor device
(2)；Sludge fermentation tank (6) is provided with the second temperature control device (6.1), third agitating device (6.2), the 2nd pH analyzers (6.3),
By the way that fermented sludge is pumped into UASB reactors (4) into dredge pump (6.4) and Mud-intake valve (6.5).
Present invention simultaneously provides a kind of FNA reinforcement sludges fermentation and realize sewerage short-cut denitrification dephosphorization method, including with
Lower step：
Device start-up operation is as follows：
The startup of sbr reactor device：It is anti-that SBR is injected using the complete nitrification sludge of actual cities sewage treatment plant as seed sludge
Device (2) is answered, control sludge concentration is 2500-4000mg/L, and hydraulic detention time 6-8h, draining ratio is 40%~60%, control
Dissolved oxygen processed is 0.8~1.5mg/L, is 15~20d by discharging excess sludge to control sludge age, excess sludge enters at sludge
Manage reactor (5), the inhibition of nitrite oxidizing bacteria is much larger than using free nitrous acid (FNA) to the inhibition of ammonia oxidation bacteria come
Realize short distance nitration, when being discharged nitrite accumulation rate more than 95% and persistently maintaining 15 days or more, SBR short distance nitrations are able to
It realizes.According to pH change curves, stop aeration before ammonia nitrogen has reacted completely, realize part short distance nitration, make water outlet nitrous/
Between 1.3~1.5, part short distance nitration is stablized to be realized ammonia nitrogen concentration ratio.
The startup of sludge fermentation tank：Sludge fermentation tank (6) is semi batch reacor, and seed sludge is municipal sewage plant
Sludge from final clarifier, for sludge retention time SRT at 10~20 days, control pH was pre- through FNA in 9~10, Treatment of Sludge reactor (5)
The excess sludge of processing is discharged into sludge fermentation tank (6), according to SRT by fermented sludge by into dredge pump (6.4) and Mud-intake valve (6.5)
It is pumped into UASB reactors (4).
The startup of UASB reactors：Seed sludge is mixed for municipal sewage anaerobic ammonia oxidation reactor sludge with sludge from final clarifier
Close object, volume ratio 5:1~10:1, to ensure the superiority of anaerobic ammonia oxidizing bacteria.Hydraulic detention time 3-5h, sludge stop
Time 10-20d is stayed, water inlet is using NH4 +-N/NO2 -- N concentration ratios are 1：1.3 artificial distribution, a concentration of 20mg/L of starting TN are simultaneously
Nitrogen load is incrementally increased until 60mg/L with the gradient of 20mg/L, the time point for increasing nitrogen load every time is that autotrophic denitrification rate is more than
95% and persistently maintain 15 days or more, finally complete to Anammox acclimation；Water inlet is using NH4 +-N/NO2 -- N concentration
Than being 1：1.3 and TN is the artificial distribution of 60mg/L, while adds sodium acetate and make a concentration of 100- of SCOD as denitrifying carbon source
150mg/L, when TN removal rates higher than 90% and persistently maintain 15 days or more when, Anammox and it is denitrifying couple successfully reality
It is existing；SCOD concentration is made to be continuously maintained at 100-150mg/L using sludge fermentation mixture substituted acetic acid sodium as denitrifying carbon source,
When TN removal rates are higher than 90% and persistently maintain 15 days or more, realize that Anammox is coupled with denitrifying.
Operation is as follows during runing adjustment：
Sanitary sewage enters sbr reactor device (2) together with the excess sludge handled through FNA, and sbr reactor device (2) first carries out
1~1.5h of anoxia stirring restarts air compressor (2.10), adjusts air valve (2.9) and gas flow meter (2.8) and is exposed
Gas, control dissolved oxygen are 0.8~1.5mg/L, and sbr reactor device (2) carries out part short distance nitration reaction, and part mineralized nitrogen is Asia
Nitrate nitrogen determines aeration time according to real-time control pH change curves, makes water outlet ammonia nitrogen in 8~12mg/L, nitrous 10~
15mg/L.The water outlet of sbr reactor device enters intermediate water tank (3), arranges excess sludge to Treatment of Sludge reactor (5), by dirt
Mud treatment reactor (5) adds sodium nitrite, makes its interior nitrite concentration for 300~1000mg/L, and by add acid or
Alkali controls pH as 5.5~6.0, the Treatment of Sludge time for 12~for 24 hours.The sludge 30~40% handled flows back into sbr reactor
Device (2), 60~70% enter sludge fermentation tank (6).Sludge fermentation mixture is together with nitrified effluent from UASB reactors (4) bottom
Portion is pumped into, and UASB temperature of reactor is controlled at 28~32 DEG C, 3~5h of hydraulic detention time, is discharged after processing and is passed through outlet pipe row
Go out.
The technical principle of the present invention is as follows：
Free nitrous acid (FNA) is inhibited nitrite oxidizing bacteria to realize short distance nitration and as dirt by novelty of the invention
Mud fermentation pre-treatment step promotes both hydrolysis acidifications to be combined, and strengthens while short distance nitration biological carbon and phosphorous removal is realized dirty
Mud internal carbon source is developed.Short distance nitration reactor spoil disposal is returned through FNA processing rear portions, and another part enters sludge fermentation tank.
Sbr reactor device elder generation anoxic denitrification removal extra nitrous of upper period, then anaerobic phosphorus release, the concurrent first portion short distance nitre of aerobic phosphorus absorption
Change, be discharged same sludge fermentation liquid and enter UASB reactors together, part ammonia nitrogen and nitrous by anaerobic ammonia oxidizing bacteria autotrophic denitrification,
Organic matter denitrification removes in remaining nitrous and the Nitrate-N Use sludge fermentation liquid generated, so as to fulfill the depth of sanitary sewage
Denitrogenation dephosphorizing.
Compared with prior art, the present invention has the following advantages：
Excess sludge is subjected to free nitrous acid (FNA) processing, not only realizes short distance nitration, but also as sludge fermentation
Pre-treatment step promotes sludge cracking to strengthen internal carbon source exploitation.
The present invention can realize the advanced nitrogen dephosphorization of sanitary sewage, Anammox on the basis of outer carbon source is not added
Product nitrate nitrogen can be removed by denitrification, and the two cooperates, and device Bacterial community is complicated, and impact resistance ability is strong.
Excess sludge is carried out fermentation process as denitrifying carbon source by the present invention, is reduced sludge yield, is reduced sewage
Treatment plant's sludge treatment expense saves operating cost.
Description of the drawings
Fig. 1 is the structure chart of apparatus of the present invention
Primary symbols are described as follows：1- raw water boxs；2-SBR reactors；3- intermediate water tanks；4-UASB reactors；5- sludge
Treatment reactor；6- sludge fermentation tanks；1.1- raw water intake pumps；The first temperature control devices of 2.1-；The first agitating devices of 2.2-；2.3-
Gas flowmeter；2.4- air valve；2.5- air compressor；The first pH analyzers of 2.6-；2.7-DO analyzer；2.8- draining
Valve；2.9- aeration head；2.10- mud valve I；2.11- sludge pump；3.1- nitrification liquid intake pumps；3.2- nitrification liquid inlet valves；4.1-
Gas collecting apparatus；4.2- outlet pipe；4.3- three phase separator；4.4- heating tapes device；4.5- water-distributing device；4.6- internal circulation pump；
Circulating valve in 4.7-；5.1- chemical feed pipe；The second agitating devices of 5.2-；5.3- mud valves II；5.4- mud valves III；5.5- reflux is dirty
Slurry valve；5.6- return sludge pump；The second temperature control devices of 6.1-；6.2- third agitating devices；The 2nd pH analyzers of 6.3-；6.4- into
Dredge pump；6.5- Mud-intake valve.
Specific embodiment
The present invention is described in further detail in conjunction with the accompanying drawings and embodiments.
As shown in Figure 1, the device of the fermentation of FNA reinforcement sludges and realization sewerage short-cut denitrification dephosphorization, including：Raw water box (1),
Sbr reactor device (2), intermediate water tank (3), UASB reactors (4), Treatment of Sludge reactor (5), sludge fermentation tank (6)；Raw water box
(1) it is supplied water by raw water intake pump (1.1) to sbr reactor device (2), sbr reactor device (2) is equipped with the first temperature control device (2.1), the
One agitating device (2.2), the first pH analyzers (2.6), DO analyzers (2.7), by being equipped with gas flowmeter (2.3), air
Valve (2.4), air compressor (2.5), aeration head (2.9) aerator be oxygenated, pass through drain valve (2.8) water outlet enter
Excess sludge is discharged to Treatment of Sludge reactor (5) by intermediate water tank (3) by mud valve I (2.10), sludge pump (2.11)；In
Between water tank (3) be connected by nitrification liquid intake pump (3.1) and nitrification liquid inlet valve (3.2) with UASB reactors (4)；UASB is anti-
Device (4) is answered to be provided with gas collecting apparatus (4.1), outlet pipe (4.2), three phase separator (4.3), heating tape device (4.4), water distribution dress
Put (4.5), internal circulation pump (4.6), interior circulating valve (4.7)；Treatment of Sludge reactor (5) is provided with chemical feed pipe (5.1), second stirs
Device (5.2) is mixed, is connected by mud valve II (5.3) with mud valve III (5.4) with sludge fermentation tank (6), it is dirty by flowing back
Slurry valve (5.5) and return sludge pump (5.6) are by processed sludge reflux to sbr reactor device (2)；Sludge fermentation tank (6) is set
Have the second temperature control device (6.1), third agitating device (6.2), the 2nd pH analyzers (6.3), by into dredge pump (6.4) with into mud
Fermented sludge is pumped into UASB reactors (4) by valve (6.5).
Test water of the present invention is using the sanitary sewage of Beijing University of Technology's dependents' district discharge, specific water quality：PH is 7.1-
7.9, COD a concentration of 130-180mg/L, NH4 +- N a concentration of 50-70mg/L, NO2 -- N and NO3 -- N detection limit hereinafter,
COD/N ratios are 2~3.Seed sludge is tested respectively from the complete nitrification sludge of municipal sewage plant, city domestic sewage
Try anaerobic ammonium oxidation apparatus.Sbr reactor device dischargeable capacity used be 10L, draining ratio be 0.5, sludge retention time 15d, daily
4 periods are run, each period includes water inlet (0.25h), stirs (0.5h), is aerated (3.5h), precipitates (1h), draining
(0.25h) leaves unused (0.5h)；UASB reactors dischargeable capacity be 5L, hydraulic detention time 4.5h, inner circulating reflux ratio
100%.Carrying out practically process is as follows：
Device start-up operation is as follows：
The startup of sbr reactor device：It is anti-that SBR is injected using the complete nitrification sludge of actual cities sewage treatment plant as seed sludge
Device (2) is answered, control sludge concentration is 2500-4000mg/L, and hydraulic detention time 6-8h, draining ratio is 40%~60%, control
Dissolved oxygen processed is 0.8~1.5mg/L, is 15~20d by discharging excess sludge to control sludge age, excess sludge enters at sludge
Manage reactor (5), the inhibition of nitrite oxidizing bacteria is much larger than using free nitrous acid (FNA) to the inhibition of ammonia oxidation bacteria come
Realize short distance nitration, when being discharged nitrite accumulation rate more than 95% and persistently maintaining 15 days or more, SBR short distance nitrations are able to
It realizes.According to pH change curves, stop aeration before ammonia nitrogen has reacted completely, realize part short distance nitration, make water outlet nitrous/
Between 1.3~1.5, part short distance nitration is stablized to be realized ammonia nitrogen concentration ratio.
The startup of sludge fermentation tank：Sludge fermentation tank (6) is semi batch reacor, and seed sludge is municipal sewage plant
Sludge from final clarifier, for sludge retention time SRT at 10~20 days, control pH was pre- through FNA in 9~10, Treatment of Sludge reactor (5)
The excess sludge of processing is discharged into sludge fermentation tank (6), according to SRT by fermented sludge by into dredge pump (6.4) and Mud-intake valve (6.5)
It is pumped into UASB reactors (4).
The startup of UASB reactors：Seed sludge is mixed for municipal sewage anaerobic ammonia oxidation reactor sludge with sludge from final clarifier
Close object, volume ratio 5:1~10:1, to ensure the superiority of anaerobic ammonia oxidizing bacteria.Hydraulic detention time 3-5h, sludge retention
Time 10-20d, water inlet is using NH4 +-N/NO2 -- N concentration ratios are 1：1.3 artificial distribution, a concentration of 20mg/L of starting TN and with
The gradient of 20mg/L incrementally increases nitrogen load until 60mg/L, and the time point for increasing nitrogen load every time is that autotrophic denitrification rate is more than
95% and persistently maintain 15 days or more, finally complete to Anammox acclimation；Water inlet is using NH4 +-N/NO2 -- N concentration
Than being 1：1.3 and TN is the artificial distribution of 60mg/L, while adds sodium acetate and make a concentration of 100- of SCOD as denitrifying carbon source
150mg/L, when TN removal rates higher than 90% and persistently maintain 15 days or more when, Anammox and it is denitrifying couple successfully reality
It is existing；SCOD concentration is made to be continuously maintained at 100-150mg/L using sludge fermentation mixture substituted acetic acid sodium as denitrifying carbon source,
When TN removal rates are higher than 90% and persistently maintain 15 days or more, realize that Anammox is coupled with denitrifying.
Operation is as follows during runing adjustment：
Sanitary sewage enters sbr reactor device (2) together with the excess sludge handled through FNA, and sbr reactor device (2) first carries out
1~1.5h of anoxia stirring restarts air compressor (2.10), adjusts air valve (2.9) and gas flow meter (2.8) and is exposed
Gas, control dissolved oxygen are 0.8~1.5mg/L, and sbr reactor device (2) carries out part short distance nitration reaction, and part mineralized nitrogen is Asia
Nitrate nitrogen determines aeration time according to real-time control pH change curves, makes water outlet ammonia nitrogen in 8~12mg/L, nitrous 10~
15mg/L.The water outlet of sbr reactor device enters intermediate water tank (3), arranges excess sludge to Treatment of Sludge reactor (5), by dirt
Mud treatment reactor (5) adds sodium nitrite, makes its interior nitrite concentration for 300~1000mg/L, and by add acid or
Alkali controls pH as 5.5~6.0, the Treatment of Sludge time for 12~for 24 hours.The sludge 30~40% handled flows back into sbr reactor
Device (2), 60~70% enter sludge fermentation tank (6).Sludge fermentation mixture is together with nitrified effluent from UASB reactors (4) bottom
Portion is pumped into, and UASB temperature of reactor is controlled at 28~32 DEG C, 3~5h of hydraulic detention time, is discharged after processing and is passed through outlet pipe row
Go out.
Result of the test shows：After stable, in the case where not adding outer carbon source, device effluent COD concentration is 40-
60mg/L, NH4 +- N is a concentration of<3mg/L, NO2 --N<1mg/L, NO3 --N<3mg/L, TN<10mg/L reaches《Urban wastewater treatment
Factory's pollutant emission standard》(GB18918-2002) level-one A standards.
Claims (2)
1.FNA reinforcement sludges ferment and the device of realization sewerage short-cut denitrification dephosphorization, it is characterised in that：Equipped with raw water box (1),
Sbr reactor device (2), intermediate water tank (3), UASB reactors (4), Treatment of Sludge reactor (5), sludge fermentation tank (6)；Raw water box
(1) it is supplied water by raw water intake pump (1.1) to sbr reactor device (2), sbr reactor device (2) is equipped with the first temperature control device (2.1), the
One agitating device (2.2), the first pH analyzers (2.6), DO analyzers (2.7), by being equipped with gas flowmeter (2.3), air
Valve (2.4), air compressor (2.5), aeration head (2.9) aerator be oxygenated, pass through drain valve (2.8) water outlet enter
Excess sludge is discharged to Treatment of Sludge reactor (5) by intermediate water tank (3) by mud valve I (2.10), sludge pump (2.11)；In
Between water tank (3) be connected by nitrification liquid intake pump (3.1) and nitrification liquid inlet valve (3.2) with UASB reactors (4)；UASB is anti-
Device (4) is answered to be provided with gas collecting apparatus (4.1), outlet pipe (4.2), three phase separator (4.3), heating tape device (4.4), water distribution dress
Put (4.5), internal circulation pump (4.6), interior circulating valve (4.7)；Treatment of Sludge reactor (5) is provided with chemical feed pipe (5.1), second stirs
Device (5.2) is mixed, is connected by mud valve II (5.3) with mud valve III (5.4) with sludge fermentation tank (6), it is dirty by flowing back
Slurry valve (5.5) and return sludge pump (5.6) are by processed sludge reflux to sbr reactor device (2)；Sludge fermentation tank (6) is set
Have the second temperature control device (6.1), third agitating device (6.2), the 2nd pH analyzers (6.3), by into dredge pump (6.4) with into mud
Fermented sludge is pumped into UASB reactors (4) by valve (6.5).
2. application claim 1 described device carries out the fermentation of FNA reinforcement sludges and the method for realizing sewerage short-cut denitrification dephosphorization,
It is characterized in that, includes the following steps：
1) device start-up operation is as follows：
1.1) startup of sbr reactor device：It is anti-that SBR is injected using the complete nitrification sludge of actual cities sewage treatment plant as seed sludge
Device (2) is answered, control sludge concentration is 2500-4000mg/L, and hydraulic detention time 6-8h, draining ratio is 40%~60%, control
Dissolved oxygen processed is 0.8~1.5mg/L, is 15~20d by discharging excess sludge to control sludge age, excess sludge enters at sludge
Manage reactor (5), the inhibition of nitrite oxidizing bacteria is much larger than using free nitrous acid (FNA) to the inhibition of ammonia oxidation bacteria come
Realize short distance nitration, when being discharged nitrite accumulation rate more than 95% and persistently maintaining 15 days or more, SBR short distance nitrations are able to
It realizes；According to pH change curves, stop aeration before ammonia nitrogen has reacted completely, realize part short distance nitration, make water outlet nitrous/
Between 1.3~1.5, part short distance nitration is stablized to be realized ammonia nitrogen；
1.2) startup of sludge fermentation tank：Sludge fermentation tank (6) is semi batch reacor, and seed sludge is municipal sewage plant
Sludge from final clarifier, for sludge retention time SRT at 10~20 days, control pH was pre- through FNA in 9~10, Treatment of Sludge reactor (5)
The excess sludge of processing is discharged into sludge fermentation tank (6), according to SRT by fermented sludge by into dredge pump (6.4) and Mud-intake valve (6.5)
It is pumped into UASB reactors (4)；
1.3) startup of UASB reactors：Seed sludge is mixed for municipal sewage anaerobic ammonia oxidation reactor sludge with sludge from final clarifier
Close object, volume ratio 5:1~10:1, to ensure the superiority of anaerobic ammonia oxidizing bacteria；Hydraulic detention time 3-5h, sludge retention
Time 10-20d, water inlet is using NH4 +-N/NO2 -- N concentration ratios are 1：1.3 artificial distribution, a concentration of 20mg/L of starting TN and with
The gradient of 20mg/L incrementally increases nitrogen load until 60mg/L, and the time point for increasing nitrogen load every time is that autotrophic denitrification rate is more than
95% and persistently maintain 15 days or more, finally complete to Anammox acclimation；Water inlet is using NH4 +-N/NO2 -- N quality
Concentration ratio is 1：1.3 and TN is the artificial distribution of 60mg/L, while add sodium acetate makes SCOD a concentration of as denitrifying carbon source
100-150mg/L when TN removal rates are higher than 90% and when persistently maintaining 15 days or more, Anammox and denitrifying is coupled into
Work(is realized；SCOD concentration is made to be continuously maintained at 100- using sludge fermentation mixture substituted acetic acid sodium as denitrifying carbon source
150mg/L when TN removal rates are higher than 90% and persistently maintain 15 days or more, realizes that Anammox is coupled with denitrifying；
2) operation is as follows during runing adjustment：Sanitary sewage enters sbr reactor device (2) together with the excess sludge handled through FNA,
Sbr reactor device (2) first carries out 1~1.5h of anoxia stirring, restarts air compressor (2.10), and it is gentle to adjust air valve (2.9)
Flowmeter body (2.8) is aerated, and control dissolved oxygen is 0.8~1.5mg/L, and it is anti-that sbr reactor device (2) carries out part short distance nitration
Should, part mineralized nitrogen is nitrite nitrogen, and aeration time is determined according to real-time control pH change curves, make water outlet ammonia nitrogen 8~
12mg/L, nitrous is in 10~15mg/L；The water outlet of sbr reactor device enters intermediate water tank (3), and it is anti-to Treatment of Sludge to arrange excess sludge
Device (5) is answered, by adding sodium nitrite to Treatment of Sludge reactor (5), it is 300~1000mg/ to make its interior nitrite concentration
L, and pH is controlled as 5.5~6.0 by adding acid or alkali, the Treatment of Sludge time for 12~for 24 hours；The sludge 30 handled~
40% flows back into sbr reactor device (2), and 60~70% enter sludge fermentation tank (6)；Sludge fermentation mixture is together with nitrified effluent
It is pumped into from UASB reactors (4) bottom, the control of UASB temperature of reactor is at 28~32 DEG C, 3~5h of hydraulic detention time, after processing
Water outlet is discharged by outlet pipe.
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