CN108658230A - Strengthen the apparatus and method of AAO+BAF technique denitrogenation dephosphorizings in postposition anoxic filter tank based on DEAMOX - Google Patents
Strengthen the apparatus and method of AAO+BAF technique denitrogenation dephosphorizings in postposition anoxic filter tank based on DEAMOX Download PDFInfo
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- CN108658230A CN108658230A CN201810236775.7A CN201810236775A CN108658230A CN 108658230 A CN108658230 A CN 108658230A CN 201810236775 A CN201810236775 A CN 201810236775A CN 108658230 A CN108658230 A CN 108658230A
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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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- 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
- C02F2101/163—Nitrates
Abstract
The apparatus and method that AAO+BAF technique denitrogenation dephosphorizings are strengthened in postposition anoxic filter tank based on DEAMOX belong to activated sludge process sewage treatment field.Its device is mainly made of AAO, secondary settling tank, biological aerated filter BAF and postposition anoxic filter tank.This method realizes synchronous denitrifying phosphorus removal by controlling the mean hydraulic residence time of anoxic zone under the conditions of low C/N ratios between 3 8h；Efficient nitrification is realized by BAF；Postposition anoxic filter tank is set, by the ammonia nitrogen (NH in secondary clarifier effluent4 +N) and BAF water outlet in nitrate nitrogen (NO3 ‑N it) mixes, adds carbon source, form the DEAMOX reactions of short-cut denitrification+Anammox in postposition anoxic filter tank, the disadvantage for overcoming AAO+BAF Process for Effluent to contain nitrate nitrogen further removes municipal wastewater total nitrogen.Under the conditions of the present invention is suitable for low C/N than municipal wastewater, the construction of municipal sewage plant carries and marks transformation etc., can reach guarantee water outlet total nitrogen, the requirement of stable effluent quality.
Description
Technical field
The present invention relates to a kind of apparatus and method of advanced nitrogen dephosphorization, belong to Wastewater Treated by Activated Sludge Process technical field, fit
For low C/N than municipal wastewater processing, advanced treating, carry mark transformation etc. technical field of sewage.
Background technology
With the continuous continuous improvement promoted with our people's living standard of urbanization, urban wastewater discharge substantially carries
The discharge of height, nitrogen, phosphorus in sewage can cause the eutrophication of water body, sewage treatment plant more next for the removal of nitrogen and phosphorus element
It is more crucial.Currently, the water outlet TN (total nitrogen is remembered with N) of many water factories is extremely difficult to《Urban wastewater treatment firm pollutant emission mark
It is accurate》(GB18918-2002) level-one emission standard A (water outlet TN≤15mg/L).And currently, more and more cities have been formulated more
The terrestrial reference (such as A standards require TN≤10mg/L in Beijing provincial standard DB11/890-2012) of high request, for being discharged TN
Requirement it is higher and higher.
AAO-BAF techniques exactly occur in such requirements of the times, and what it solved conventional sewage plants two asks greatly
Topic：Under the conditions of the contradiction and low C/N ratios of nitrifier sludge age and heterotroph sludge age how synchronous denitrification dephosphorizing.
Anammox (Anammox) effect utilizes nitrite (NO by anaerobic ammonia oxidizing bacteria under anoxic conditions2 --
N it is) electron acceptor, by ammonia nitrogen (NH4 +- N) it is oxidized to the bioprocesses of nitrogen.The discovery of Anammox, can be very big
Save sewage in carbon source, have higher nitric efficiency compared to traditional activated sludge process.
DEAMOX (Denitrifying Ammonium Oxidation) technique is that Dutch Delft universities are being detested for 2006
A kind of new denitrification process for combining heterotrophic denitrification to propose on the basis of anaerobic ammonium oxidation technique, for containing ammonia nitrogen (NH4 +-N)
With nitrate nitrogen (NO3 -- N) waste water have good removal ability.Wherein one of Anammox reaction substrate nitrite comes
From in the intermediate product nitrite (NO of denitrification process3 --N→ NO2 -- N), this technique overcomes short-cut denitrification difficulty and stops
The difficult point stayed, in effective solution Anammox substrate the problem of nitrous source.
Invention content
The object of the present invention is to provide it is a kind of for low C/N than municipal wastewater advanced nitrogen dephosphorization apparatus and method.
AAO+BAF techniques for low C/N than sewage disposal there is preferable treatment effect, technological advantage to be：1. by rationally increasing
Add the HRT of anoxic zone to provide facility for the growth of denitrifying phosphorus removing bacteria DPAOs, anti-nitre has been given birth to using carbon source is counter simultaneously in anoxic zone
Change and two processes of dephosphorization, have achieved the purpose that " carbon is dual-purpose ", have saved the carbon source in raw water；2. customer service nitrifier and different
The contradiction of two kinds of microorganism difference sludge ages of bacteria is generated contained in process with double sludges separation nitrifying process, denitrification process
Ammonia nitrogen NH4 +The secondary clarifier effluent and NO containing nitrate nitrogen of-N3 -The BAF of-N is discharged.The water outlet of former technique has basically reached《Cities and towns
Wastewater Treatment discharge standard》(GB18918-2002) level-one emission standard A, but current China is for town sewage plant
Processing capacity has higher requirement, wherein《Beijing's sewage drainage standard》(DB11/890-2012) to sewage discharge mark
Accurate indices have tightened up control, wherein TN (total nitrogen, in terms of N) requirement≤10mg/L.The present invention utilizes AAO-BAF
What is generated in technical process contains ammonia nitrogen NH4 +- N and nitrate nitrogen NO3 -The water conservancy of-N is combined with DEAMOX techniques, after utilization
It sets anoxic filter tank and provides better growing conditions for heterotrophic microorganism and anaerobic ammonia oxidizing bacteria, it is real in the case where carbon source is added
The further removal of existing TN.
Strengthen the device of AAO+BAF technique denitrogenation dephosphorizings in postposition anoxic filter tank based on DEAMOX, it is characterised in that：By into
Water pump (1) enters AAO reactors (2), connects secondary settling tank (8) later, connects biological aerated filter BAF (12), Zhi Houlian later
Postposition anoxic filter tank (24) is connect, is finally discharged for final process by the water outlet (28) on postposition anoxic filter tank (24)；AAO is anti-
Device (2) is answered to be linked in sequence successively including anaerobic zone (3), anoxic zone (4), aerobic zone (5)；Aerobic tank (5) is through overflow port (7) and two
Heavy pond (8) connection；Secondary settling tank (8) water outlet flows into intermediate water tank (9), is entered by BAF intake pumps (11) by intermediate water tank (9)
Biological aerated filter BAF (12)；There are aerobic filler (13), water outlet to pass through BAF water outlets in biological aerated filter BAF (12)
(14) enter whole water tank (10)；The water stored in whole water tank (10) returns to anoxic zone (4) by nitrification liquid reflux pump (15)；Two is heavy
Pond (8) bottom muddy water mixed solution enters anaerobic zone (3) by sludge reflux pump (16)；Ammonia nitrogen water outlet is arranged in intermediate water tank (9)
(20), enter postposition anoxic filter tank (24) by ammonia nitrogen intake pump (21)；Whole water tank (10) setting nitrate nitrogen water outlet (22), passes through
Nitrate nitrogen intake pump (23) enters postposition anoxic filter tank (24)；It is the water containing carbon source in carbon source water tank (26), is pumped by carbon source
(27) enter postposition anoxic filter tank (24)；There is anoxic filler (25) in postposition anoxic filter tank (24).
Strengthen the device of AAO+BAF technique denitrogenation dephosphorizings in postposition anoxic filter tank based on DEAMOX, which is characterized in that anaerobism
There are agitating device (6) in area (3), anoxic zone (4)；There is wind turbine (17) to be connected to aerobic zone aerator (18) to aerobic zone (5)
It is aerated；Wind turbine (17) while the BAF aerators (19) that are connected in biological aerated filter BAF (12) filter aeration and biological
Pond BAF (12) is aerated.
The method that AAO+BAF technique denitrogenation dephosphorizings are strengthened in postposition anoxic filter tank based on DEAMOX, which is characterized in that including
Following steps：
(1) municipal wastewater enters AAO reactors (2) by intake pump (1), and anaerobic phosphorus release, anti-nitre are carried out in anaerobic zone (3)
Change dephosphorization bacterial DPAOs and synthesize internal carbon source PHAs using the COD in raw water, while discharging phosphorus, anaerobic zone (3) hydraulic detention time
HRT controls are 1-2h；
(2) mixed liquor enters anoxic zone (4) by anaerobic zone (3), while by nitrification liquid reflux pump (15) from whole water tank
(10) water outlet from biological aerated filter BAF (12) accumulated in enters anoxic zone (4), and DPAOs is supplied by electronics of PHAs
Body, with nitrate nitrogen NO3 -- N is that electron acceptor carries out denitrifying phosphorus uptake, and the HRT controls of anoxic zone (4) are 3-8h；
(3) mixed liquor enters aerobic zone (5) by anoxic zone (4), this stage, and remaining COD is degraded in mixed liquor, remains
Remaining phosphorus is absorbed, and the HRT controls of aerobic zone (5) are 0.5-1h；
(4) mixed liquor enters secondary settling tank (8) by the overflow port (7) of aerobic zone (5), realizes mud-water separation, is absorbed into micro-
The phosphorus of biology is discharged in spoil disposal, and contains ammonia nitrogen NH4 +The water of-N then flows into intermediate water tank (9), and return sludge ratio is set as
0.75:1-1.5:1；
(5) contain ammonia nitrogen NH4 +The water of-N is accumulated in intermediate water tank (9), reach after full pond state through by BAF intake pumps into
Enter biological aerated filter BAF (12), there is a large amount of aerobic fillers (13), aerobic filler (13) material inside biological aerated filter BAF
Material is polypropylene hollow ring, packing ratio 35%-75%, specific surface area 200m2/m3-800m2/m3, density be 0.96~
1.00g/cm3, the nitrifier for having aerobic autotrophic is grown thereon, nitrification occurs in aeration, water outlet enters whole water tank
(10)；
(6) whole water tank (10) interior water contains nitrate nitrogen NO3 -- N is back to anoxic zone (4) via nitrification liquid reflux pump (15)
Electron acceptor is provided for DPAOs, mixed liquid recycle ratio is set as 2:1-4:1；
(7) contain ammonia nitrogen NH4 +Water in the intermediate water tank (20) of-N is filtered via ammonia nitrogen intake pump (21) into postposition anoxic
Pond (24), contains nitrate nitrogen NO3 -Water in the whole water tank (10) of-N enters postposition anoxic filter tank via nitrate nitrogen intake pump (23)
(24), the HRT of postposition anoxic filter tank (24) is set as 0.5-3h, ammonia nitrogen NH4 +- N and nitrate nitrogen NO3 -Mass concentration after-N water inlets
Ratio setting is 1:1.1-1:1.6, interior carbon source water tank (26) is the water containing carbon source, is lacked into postposition via carbon source pump (27)
Oxygen filter tank (24), the COD and nitrate nitrogen NO after water inlet3 -The mass concentration ratio of-N is set as 1.2:1-2:1；
(8) it is polyurethane foam, packing ratio to have anoxic filler (25), anoxic filler (25) in postposition anoxic filter tank (24)
For 50%-80%, porosity 92-94%, density 0.22-0.25g/cm3, grow has denitrifying bacterium and Anammox thereon
DEAMOX reactions occur under anoxic conditions for bacterium, further remove TN, and water outlet (28) water outlet in postposition anoxic filter tank (24) is
Final outflow water；
(9) think that its obstruction needs to backwash when the water discharge speed in postposition anoxic filter tank (24) reduces 30%, increase at this time
Big ammonia nitrogen intake pump (21) and nitrate nitrogen intake pump (23) flow, back washing strength are set as 12-15L/ (sm2), water outlet row
Go out；
The apparatus and method of AAO+BAF technique denitrogenation dephosphorizings are strengthened in postposition anoxic filter tank based on DEAMOX, and feature exists
In the HRT by increasing anoxic zone (4) provides growth vigor for denitrifying phosphorus removing bacteria, reaches denitrogenation dephosphorizing " carbon is dual-purpose "；It is logical
It crosses to isolate and ensures that nitrification is complete on nitrifier to the filler of (12) biological aerated filter BAF；By adding the filter of postposition anoxic
Pond (24) introduces and contains ammonia nitrogen NH4 +The secondary settling tank (8) of-N is discharged and contains nitrate nitrogen NO3 -The biological aerated filter BAF of-N
(12) it is discharged, DEAMOX reactions is completed in the case where adding carbon source, achieve the purpose that further to remove TN.
Obviously, examples detailed above is only intended to clearly illustrate done citing, and does not limit the embodiments.For
For technical staff in fields, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation or change thus amplified out
It moves within still in protection scope of the present invention.
The apparatus and method of AAO+BAF technique denitrogenation dephosphorizings are strengthened in postposition anoxic filter tank based on DEAMOX, and traditional
Continuous flow activated sludge process, which is compared, has advantage：
1. saving carbon source
2. advanced nitrogen reduces water outlet TN (total nitrogen, in terms of N), meet higher water outlet requirement
3. saving aeration quantity
Description of the drawings
Fig. 1 is the installation drawing that AAO+BAF technique denitrogenation dephosphorizings are strengthened in the postposition anoxic filter tank based on DEAMOX.Wherein：1-
Intake pump, 2-AAO reactors, the anaerobic zones 3-, the anoxic zones 4-, the aerobic zones 5-, 6- agitating devices, 7- overflow ports, 8- secondary settling tanks, 9-
Intermediate water tank, 10- end water tanks, 11-BAF intake pumps, the aerobic fillers of 12- biological aerated filter BAF, 13-, 14-BAF water outlets,
15- nitrification liquid reflux pumps, 16- sludge reflux pumps, 17- wind turbines, the aerobic zones 18- aerator, 19-BAF aerators, 20- ammonia
Nitrogen water outlet, 21- ammonia nitrogen intake pumps, 22- nitrate nitrogen water outlets, 23- nitrate nitrogen intake pumps, 24- postposition anoxics filter tank, 25- anoxics are filled out
Material, 26- carbon source water tanks, 27- carbon sources pump, 28- water outlets.
Specific implementation mode
Strengthen the device of AAO+BAF technique denitrogenation dephosphorizings in postposition anoxic filter tank based on DEAMOX, it is characterised in that：By into
Water pump (1) enters AAO reactors (2), connects secondary settling tank (8) later, connects biological aerated filter BAF (12), Zhi Houlian later
Postposition anoxic filter tank (24) is connect, is finally discharged for final process by the water outlet (28) on postposition anoxic filter tank (24)；AAO reacts
Device (2) is linked in sequence including anaerobic zone (3), anoxic zone (4), aerobic zone (5) successively；Aerobic tank (5) is heavy with two through overflow port (7)
Pond (8) connects；Secondary settling tank (8) water outlet flows into intermediate water tank (9), is entered by BAF intake pumps (11) by intermediate water tank (9) and is exposed
Gas biofilter BAF (12)；There are aerobic filler (13), water outlet to pass through BAF water outlets (14) in biological aerated filter BAF (12)
Into whole water tank (10)；The water stored in whole water tank (10) returns to anoxic zone (4) by nitrification liquid reflux pump (15)；Secondary settling tank
(8) bottom muddy water mixed solution enters anaerobic zone (3) by sludge reflux pump (16)；Ammonia nitrogen water outlet is arranged in intermediate water tank (9)
(20), enter postposition anoxic filter tank (24) by ammonia nitrogen intake pump (21)；Whole water tank (10) setting nitrate nitrogen water outlet (22), passes through
Nitrate nitrogen intake pump (23) enters postposition anoxic filter tank (24)；It is the water containing carbon source in carbon source water tank (26), is pumped by carbon source
(27) enter postposition anoxic filter tank (24)；There is anoxic filler (25) in postposition anoxic filter tank (24).
Strengthen the device of AAO+BAF technique denitrogenation dephosphorizings in postposition anoxic filter tank based on DEAMOX, which is characterized in that anaerobism
There are agitating device (6) in area (3), anoxic zone (4)；There is wind turbine (17) to be connected to aerobic zone aerator (18) to aerobic zone (5)
It is aerated；Wind turbine (17) while the BAF aerators (19) that are connected in biological aerated filter BAF (12) filter aeration and biological
Pond BAF (12) is aerated.
The method that AAO+BAF technique denitrogenation dephosphorizings are strengthened in postposition anoxic filter tank based on DEAMOX, which is characterized in that including
Following steps：
(1) municipal wastewater enters AAO reactors (2) by intake pump (1), and anaerobic phosphorus release, anti-nitre are carried out in anaerobic zone (3)
Change dephosphorization bacterial DPAOs and synthesize internal carbon source PHAs using the COD in raw water, while discharging phosphorus, anaerobic zone (3) hydraulic detention time
HRT controls are 1-2h；
(2) mixed liquor enters anoxic zone (4) by anaerobic zone (3), while by nitrification liquid reflux pump (15) from whole water tank
(10) water outlet from biological aerated filter BAF (12) accumulated in enters anoxic zone (4), and DPAOs is supplied by electronics of PHAs
Body, with nitrate nitrogen NO3 -- N is that electron acceptor carries out denitrifying phosphorus uptake, and the HRT controls of anoxic zone (4) are 3-8h；
(3) mixed liquor enters aerobic zone (5) by anoxic zone (4), this stage, and remaining COD is degraded in mixed liquor, remains
Remaining phosphorus is absorbed, and the HRT controls of aerobic zone (5) are 0.5-1h；
(4) mixed liquor enters secondary settling tank (8) by the overflow port (7) of aerobic zone (5), realizes mud-water separation, is absorbed into micro-
The phosphorus of biology is discharged in spoil disposal, and contains ammonia nitrogen NH4 +The water of-N then flows into intermediate water tank (9), and return sludge ratio is set as
0.75:1-1.5:1；
(5) contain ammonia nitrogen NH4 +The water of-N is accumulated in intermediate water tank (9), reach after full pond state through by BAF intake pumps into
Enter biological aerated filter BAF (12), there is a large amount of aerobic fillers (13), aerobic filler (13) material inside biological aerated filter BAF
Material is polypropylene hollow ring, packing ratio 35%-75%, specific surface area 200m2/m3-800m2/m3, density 0.96-
1.00g/cm3, the nitrifier for having aerobic autotrophic is grown thereon, nitrification occurs in aeration, water outlet enters whole water tank
(10)；
(6) whole water tank (10) interior water contains nitrate nitrogen NO3 -- N is back to anoxic zone (4) via nitrification liquid reflux pump (15)
Electron acceptor is provided for DPAOs, mixed liquid recycle ratio is set as 2:1-4:1；
(7) contain ammonia nitrogen NH4 +Water in the intermediate water tank (20) of-N is filtered via ammonia nitrogen intake pump (21) into postposition anoxic
Pond (24), contains nitrate nitrogen NO3 -Water in the whole water tank (10) of-N enters postposition anoxic filter tank via nitrate nitrogen intake pump (23)
(24), the HRT of postposition anoxic filter tank (24) is set as 0.5-3h, ammonia nitrogen NH4 +- N and nitrate nitrogen NO3 -Mass concentration after-N water inlets
Ratio setting is 1:1.1-1:1.6, interior carbon source water tank (26) is the water containing carbon source, is lacked into postposition via carbon source pump (27)
Oxygen filter tank (24), the COD and nitrate nitrogen NO after water inlet3 -The mass concentration ratio of-N is set as 1.2:1-2:1；
(8) it is polyurethane foam, packing ratio to have anoxic filler (25), anoxic filler (25) in postposition anoxic filter tank (24)
For 50-80%, porosity 92-94%, density 0.22-0.25g/cm3, grow has denitrifying bacterium and Anammox thereon
DEAMOX reactions occur under anoxic conditions for bacterium, further remove TN, water outlet (28) water outlet in postposition anoxic filter tank (24)
For final outflow water；
(9) think that its obstruction needs to backwash when the water discharge speed in postposition anoxic filter tank (24) reduces 30%, increase at this time
Big ammonia nitrogen intake pump (21) and nitrate nitrogen intake pump (23) flow, back washing strength are set as 12-15L/ (sm2), water outlet row
Go out.
Claims (2)
1. the device of AAO+BAF technique denitrogenation dephosphorizings is strengthened in the postposition anoxic filter tank based on DEAMOX, it is characterised in that：By intaking
(1) connection AAO reactors (2) are pumped, connect secondary settling tank (8) later, biological aerated filter BAF (12) is connected later, connects later
Postposition anoxic filter tank (24) is finally discharged by the water outlet (28) on postposition anoxic filter tank (24) for final process；AAO reactors
(2) it is linked in sequence successively including anaerobic zone (3), anoxic zone (4), aerobic zone (5)；Aerobic tank (5) is through overflow port (7) and secondary settling tank
(8) it connects；Secondary settling tank (8) water outlet flows into intermediate water tank (9), and entering aeration by BAF intake pumps (11) by intermediate water tank (9) gives birth to
Object filter tank BAF (12)；There are aerobic filler (13), water outlet to enter by BAF water outlets (14) in biological aerated filter BAF (12)
Whole water tank (10)；The water stored in whole water tank (10) returns to anoxic zone (4) by nitrification liquid reflux pump (15)；Secondary settling tank (8) bottom
Portion's muddy water mixed solution enters anaerobic zone (3) by sludge reflux pump (16)；Ammonia nitrogen water outlet (20), warp is arranged in intermediate water tank (9)
Cross ammonia nitrogen intake pump (21) connection postposition anoxic filter tank (24)；Whole water tank (10) setting nitrate nitrogen water outlet (22), by nitrate nitrogen into
Water pump (23) connects postposition anoxic filter tank (24)；It is the water containing carbon source in carbon source water tank (26), is entered by carbon source pump (27)
Postposition anoxic filter tank (24)；There is anoxic filler (25) in postposition anoxic filter tank (24)；
There are agitating device (6) in anaerobic zone (3), anoxic zone (4)；There is wind turbine (17) to be connected to aerobic zone aerator (18) to good
Oxygen area (5) is aerated；Wind turbine (17) while the BAF aerators (19) that are connected in biological aerated filter BAF (12) are to exposing
Gas biofilter BAF (12) is aerated.
2. the method for application device as described in claim 1, which is characterized in that include the following steps：
(1) municipal wastewater enters AAO reactors (2) by intake pump (1), and anaerobic phosphorus release is carried out in anaerobic zone (3), and denitrification removes
Phosphorus bacterium DPAOs utilizes the COD in raw water to synthesize internal carbon source PHAs, while discharging phosphorus, anaerobic zone (3) hydraulic detention time HRT controls
It is made as 1-2h；
(2) mixed liquor enters anoxic zone (4) by anaerobic zone (3), while by nitrification liquid reflux pump (15) out of whole water tank (10)
The water outlet from biological aerated filter BAF (12) of accumulation enters anoxic zone (4), and DPAOs is using PHAs electron donor, with nitre state
Nitrogen NO3 -- N is that electron acceptor carries out denitrifying phosphorus uptake, and the HRT controls of anoxic zone (4) are 3-8h；
(3) mixed liquor enters aerobic zone (5) by anoxic zone (4), this stage, and remaining COD is degraded in mixed liquor, remaining phosphorus
It is absorbed, the HRT controls of aerobic zone (5) are 0.5-1h；
(4) mixed liquor enters secondary settling tank (8) by the overflow port (7) of aerobic zone (5), realizes mud-water separation, is absorbed into microorganism
Phosphorus be discharged in spoil disposal, and contain ammonia nitrogen NH4 +The water of-N then flows into intermediate water tank (9), and return sludge ratio is set as 0.75:
1-1.5:1；
(5) contain ammonia nitrogen NH4 +The water of-N is accumulated in intermediate water tank (9), is reached after full pond state through entering aeration by BAF intake pumps
Biofilter BAF (12), it is polypropylene to have aerobic filler (13), aerobic filler (13) material inside biological aerated filter BAF
Cavity ring, packing ratio 35%-75%, specific surface area 200m2/m3-800m2/m3, density 0.96-1.00g/cm3,
It is upper to grow the nitrifier for having aerobic autotrophic, nitrification occurs in aeration, water outlet enters whole water tank (10)；
(6) whole water tank (10) interior water contains nitrate nitrogen NO3 -- N, being back to anoxic zone (4) via nitrification liquid reflux pump (15) is
DPAOs provides electron acceptor, and mixed liquid recycle ratio is set as 2:1-4:1；
(7) contain ammonia nitrogen NH4 +Water in the intermediate water tank (20) of-N enters postposition anoxic filter tank via ammonia nitrogen intake pump (21)
(24), containing nitrate nitrogen NO3 -Water in the whole water tank (10) of-N enters postposition anoxic filter tank via nitrate nitrogen intake pump (23)
(24), the HRT of postposition anoxic filter tank (24) is set as 0.5-3h, ammonia nitrogen NH4 +- N and nitrate nitrogen NO3 -Mass concentration after-N water inlets
Ratio setting is 1:1.1-1:1.6, interior carbon source water tank (26) is the water containing carbon source, enters postposition anoxic via carbon source pump (27)
Filter tank (24), the COD and nitrate nitrogen NO after water inlet3 -The mass concentration ratio of-N is set as 1.2:1-2:1；
(8) it is polyurethane foam to have anoxic filler (25), anoxic filler (25) in postposition anoxic filter tank (24), and packing ratio is
50%-80%, porosity 92-94%, density 0.22-0.25g/cm3, grow has denitrifying bacterium and Anammox thereon
DEAMOX reactions occur under anoxic conditions for bacterium, further remove TN, and water outlet (28) water outlet in postposition anoxic filter tank (24) is
Final outflow water；
(9) think that its obstruction needs to backwash when the water discharge speed in postposition anoxic filter tank (24) reduces 30%, increase ammonia at this time
Nitrogen intake pump (21) and nitrate nitrogen intake pump (23) flow, back washing strength are set as 12-15L/ (sm2), water outlet discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810236775.7A CN108658230B (en) | 2018-03-21 | 2018-03-21 | Device and method for strengthening denitrification and dephosphorization by AAO + BAF (anaerobic anoxic/oxic + BAF) process based on DEAMOX (anoxic/oxic) filter tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810236775.7A CN108658230B (en) | 2018-03-21 | 2018-03-21 | Device and method for strengthening denitrification and dephosphorization by AAO + BAF (anaerobic anoxic/oxic + BAF) process based on DEAMOX (anoxic/oxic) filter tank |
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| Publication Number | Publication Date |
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| CN108658230A true CN108658230A (en) | 2018-10-16 |
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| CN201810236775.7A Active CN108658230B (en) | 2018-03-21 | 2018-03-21 | Device and method for strengthening denitrification and dephosphorization by AAO + BAF (anaerobic anoxic/oxic + BAF) process based on DEAMOX (anoxic/oxic) filter tank |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510738A (en) * | 2019-08-12 | 2019-11-29 | 欧基（上海）环保科技有限公司 | A kind of aerobic denitrogenation dephosphorizing enhanced sewage processing system and method |
| CN111908735A (en) * | 2020-08-28 | 2020-11-10 | 桂林理工大学 | AAO process transformation method for urban sewage treatment plant based on anaerobic ammonia oxidation |
| CN112830627A (en) * | 2020-12-31 | 2021-05-25 | 深圳市澳洁源环保科技有限公司 | Domestic sewage treatment method and integrated treatment equipment |
| CN115893644A (en) * | 2022-11-05 | 2023-04-04 | 北京工业大学 | Device and method for strengthening sewage nitrogen and phosphorus removal by combining SRT (reduced surface temperature) and HRT (high resolution transformation) with denitrification phosphorus removal coupled anaerobic ammonia oxidation |
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| CN110510738A (en) * | 2019-08-12 | 2019-11-29 | 欧基（上海）环保科技有限公司 | A kind of aerobic denitrogenation dephosphorizing enhanced sewage processing system and method |
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| CN112830627A (en) * | 2020-12-31 | 2021-05-25 | 深圳市澳洁源环保科技有限公司 | Domestic sewage treatment method and integrated treatment equipment |
| CN112830627B (en) * | 2020-12-31 | 2022-03-11 | 深圳市澳洁源环保科技有限公司 | Domestic sewage treatment method and integrated treatment equipment |
| CN115893644A (en) * | 2022-11-05 | 2023-04-04 | 北京工业大学 | Device and method for strengthening sewage nitrogen and phosphorus removal by combining SRT (reduced surface temperature) and HRT (high resolution transformation) with denitrification phosphorus removal coupled anaerobic ammonia oxidation |
| CN115893644B (en) * | 2022-11-05 | 2024-04-19 | 北京工业大学 | Device and method for constructing denitrification dephosphorization coupled anaerobic ammonia oxidation enhanced sewage denitrification dephosphorization by SRT and HRT combined regulation and control |
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