CN104528933B - The method that mud realizes flowing municipal sewage autotrophic denitrification continuously is processed based on FNA - Google Patents
The method that mud realizes flowing municipal sewage autotrophic denitrification continuously is processed based on FNA Download PDFInfo
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- CN104528933B CN104528933B CN201410713794.6A CN201410713794A CN104528933B CN 104528933 B CN104528933 B CN 104528933B CN 201410713794 A CN201410713794 A CN 201410713794A CN 104528933 B CN104528933 B CN 104528933B
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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
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
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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
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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- Biodiversity & Conservation Biology (AREA)
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Abstract
The invention discloses a kind of method processing mud realization stream municipal sewage autotrophic denitrification continuously based on FNA.Municipal sewage initially enters except organic reactor, removes the Organic substance in sewage by sludge absorption effect, and then its water outlet enters self-supported denitrification reactor, it is achieved synchronize short distance nitration Anammox autotrophic denitrification；Sludge age is controlled by periodic exhaustion excess sludge every day；Periodically use free nitrous acid to process activated sludge, control the growth of activated sludge nitrite oxidation bacteria, maintain system stability short distance nitration；Final realization stream municipal sewage autotrophic denitrification continuously, thus reduce sewage disposal energy consumption.
Description
Technical field
The present invention relates to a kind of side processing mud realization stream municipal sewage autotrophic denitrification continuously based on FNA
Method, belongs to technical field of biological sewage treatment.
Background technology
The discovery of anaerobic ammonia oxidizing bacteria changes people can only could be oxidized under conditions of aerobic to ammonia
Understanding.Anammox reaction makes sewage autotrophic denitrification be possibly realized, and is the most become
Merit is applied to the digested sludge dehydration high-ammonia-nitrogen sewage denitrogenation processing such as liquid, percolate.With tradition nitrification
Denitrification denitrogenation technology is compared, and Anammox autotrophic denitrification oxygen demand is low so that system energy consumption is relatively low；
Without organic carbon source, so that the Organic substance in sewage can farthest be used for methane phase, improve
The recovery utilization rate of energy in sewage.It is dehydrated compared with the high-ammonia-nitrogen sewages such as liquid with digested sludge, municipal sewage
Amount bigger, if Anammox technology can be applied to municipal sewage denitrogenation, then be expected to city is greatly reduced
City's Sewage Plant energy consumption, improves Sewage Plant methane production simultaneously, and then improves methane generated energy.
The bottleneck that restriction Anammox technology is applied in municipal sewage plant at present is that Anammox is anti-
The substrate nitrite answered can not obtain stable supply.It is now recognized that the main path obtaining nitrite is
By ammonia oxidation bacteria, ammonia nitrogen in sewage is oxidized to nitrite, avoids nitrite the most sub-simultaneously
Nitrate oxidation bacteria is oxidized to nitrate, i.e. realizes short distance nitration.It is current that continuous flow sewage processes technique
One of most widely used technique of municipal wastewater treatment plant.Therefore control in stream urban sewage treatment process continuously
The control of NOB, and then realize municipal sewage short distance nitration Anammox autotrophic denitrification
Technology and method, has great importance for municipal sewage plant's energy-saving and emission-reduction.
Summary of the invention
The purpose of the present invention is aiming at realizing the bottleneck problem of municipal sewage Anammox autotrophic denitrification,
Propose a kind of method processing mud realization stream municipal sewage autotrophic denitrification continuously based on FNA, the method
First Organic substance in municipal sewage is removed in except organic reactor, then at self-supported denitrification reactor
Realizing synchronizing short distance nitration Anammox is nitrogen by the mineralized nitrogen in sewage, reaches sewage water denitrification
Purpose；This method realizes the nitrite (FNA) it is crucial that employing dissociates of autotrophic denitrification and processes part
Returned sludge, the NOB in selective inhibitory activity mud, thus control nitrite oxygen
Change the growth metabolism of bacterium, it is achieved the accumulation of Nitrite In Polluted Water nitrate, i.e. avoid the oxidized nitric acid of nitrite
Salt, is finally reached the purpose stabilizing to anaerobic ammonia oxidizing bacteria offer substrate nitrite.
It is an object of the invention to be solved by solution below: floc sludge is real with granule sludge symbiosis
Existing municipal sewage autotrophic denitrification device is provided with municipal sewage raw water box 1, except organic reactor 2, middle heavy
Pond, shallow lake 3, self-supported denitrification reactor 4, second pond 5, Treatment of Sludge reactor 6；Municipal sewage raw water box 1
It is provided with overflow pipe 1.1 and blow-down pipe 1.2；Municipal sewage raw water box 1 is by intake pump 2.1 and except Organic substance
Reactor 2 water inlet pipe is connected；Except organic reactor 2 is divided into several compartment, according in water (flow) direction
Under the flowing hole that is crisscross arranged connect each compartment, be provided with aeration head 2.3, air compressor machine 2.7, gas flowmeter
2.6 with air volume regulating valve 2.5；Except organic reactor 2 is sunk with centre by intermediate sedimentation pond connecting tube 2.4
Pond, shallow lake 3 connects；Intermediate sedimentation pond 3 is by sludge reflux pump 2.2 and except the water inlet pipe of organic reactor 2
It is connected；Intermediate sedimentation pond outlet pipe 3.3 is connected with self-supported denitrification reactor water inlet pipe 4.1；Autotrophic denitrification
Reactor 4 is divided into 7 compartments, and anoxic zone 4.3 is alternately arranged with aerobic zone 4.4, according in water (flow) direction
Under the flowing hole that is crisscross arranged connect each compartment, anoxic zone is provided with agitator 4.6, and adds floating stuffing；
Aerobic zone aerating system；Self-supported denitrification reactor 4 is connected with second pond 5 by second pond connecting tube 4.7；
Second pond 5 is connected with self-supported denitrification reactor 4 first compartment by sludge reflux pump 4.5；Sludge reflux
Pump 4.5 enters mud pipe 6.5 with Treatment of Sludge reactor and is connected；Treatment of Sludge reactor 6 is a uncovered cell body,
Be provided with blow-down pipe 6.1, mud adds pump 6.2, chemical feed pipe 6.3, agitator 6.4 with enter mud pipe 6.5；Mud
Treatment reactor 6 adds pump 6.2 by mud and is connected with self-supported denitrification reactor 4 first compartment.
Municipal sewage handling process in this device is: municipal sewage and intermediate sedimentation pond returned sludge one
Rise and enter except organic reactor, by the adsorption of activated sludge by the Adsorption of Organic in water to dirty
In mud；Then enter self-supported denitrification reactor except organic reactor water outlet, utilize first anoxic zone
In water, remaining a small amount of Organic substance carries out anti-nitration reaction, and follow-up aerobic zone finds ammoxidation, will
Mineralized nitrogen is nitrite, Anammox effect occurs, by ammonia nitrogen and nitrite nitrogen in anoxic zone
It is converted into nitrogen, the most again repeats above effect；It is finally reached the purpose removed from sewage by nitrogen.
Floc sludge and granule sludge symbiosis realize municipal sewage autotrophic denitrification device and realize the side of autotrophic denitrification
Method, it is characterised in that comprise herein below:
1) system is started: inoculation traditional wastewater treatment plant activated sludge adds to except organic reactor (2),
Making sludge concentration is 2000-3000mg/L；Inoculation has the activated sludge of nitrification activity and adds to autotrophic denitrification
Reactor (4) so that it is concentration reaches 1500-3000mg/L；Throw to the anoxic zone of self-supported denitrification reactor
Adding biological suspended packing, packing volume is than for 20-50%.
2) when running, regulation operation is as follows:
2.1) control as 2-6 days except the sludge age of organic reactor (2), aerobic zone dissolved oxygen concentration control
Being made as 0.5-1.5mg/L, return sludge ratio is 50-100%, and hydraulic detention time is 30-60min；
2.2) self-supported denitrification reactor (4) aerobic zone dissolved oxygen concentration is 0.3-0.8mg/L, surplus by discharge
It is 15-20 days that remaining mud controls sludge age；
2.3) self-supported denitrification reactor (4) sludge back flow quantity is 0.5-1.5 times of this reactor inflow, its
The 5-10% of middle sludge reflux amount is delivered to Treatment of Sludge reactor (6)；
2.4) by adding sodium nitrite to Treatment of Sludge reactor (6), nitrite nitrogen in reactor is made
Concentration is 300-2000mg/L, and by pH in adding acid or alkali control Treatment of Sludge reactor is
5.0-6.0, sludge retention time is 12-24h.
The present invention processes, based on FNA, the method that mud realizes flowing municipal sewage autotrophic denitrification continuously, with tradition
Nitration denitrification denitrogenation technique is compared and is had the advantage that
1) autotrophic denitrification can first be adsorbed in activated sludge without Organic substance, the Organic substance in municipal sewage,
Then it is used further to anaerobic fermentation methane phase, thus improves sewage treatment plant's production capacity.
2) achieving the separation of ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria, it is dirty that ammonia oxidation bacteria is mainly enriched in activity
In mud, anaerobic ammonia oxidizing bacteria is mainly enriched on floating stuffing, it is achieved thereby that the list of ammonia oxidation bacteria
Stay alone reason.
3) short distance nitration Anammox denitrogenation technology oxygen demand is low, and sewage disposal energy consumption is low.
Accompanying drawing explanation
Fig. 1 is that the structure that the present invention processes mud realization stream municipal sewage autotrophic denitrification device continuously based on FNA is shown
It is intended to.
Figure 1 is municipal sewage raw water box, 2 for except organic reactor, 3 be intermediate sedimentation pond, 4 be
Self-supported denitrification reactor, 5 be second pond, 6 for Treatment of Sludge reactor；1.1 is overflow pipe, and 1.2 for putting
Blank pipe；2.1 be intake pump, 2.2 for sludge reflux pump, 2.3 for aeration head, 2.4 for intermediate sedimentation pond company
Adapter, 2.5 be air volume regulating valve, 2.6 for gas flowmeter, 2.7 be air compressor machine；3.1 is intermediate sedimentation
Pond returned sludge tube valve, 3.2 is spoil disposal pipe valve, and 3.3 is intermediate sedimentation pond outlet pipe；4.1 take off for autotrophy
Analysis water inlet pipe, 4.2 be reflux sludge tube, 4.3 for anoxic zone, 4.4 for aerobic zone, 4.5 for dirt
Mud reflux pump, 4.6 being agitator, 4.7 is second pond connecting tube；6.1 be Treatment of Sludge reactor blow-down pipe,
6.2 for mud add pump, 6.3 be chemical feed pipe, 6.4 be agitator, 6.5 for entering mud pipe.
Detailed description of the invention
The present invention will be further described with embodiment below in conjunction with the accompanying drawings: as it is shown in figure 1, floc sludge with
Granule sludge symbiosis realizes municipal sewage autotrophic denitrification device and is provided with municipal sewage raw water box (1), except organic
Thing reactor (2), intermediate sedimentation pond (3), self-supported denitrification reactor (4), second pond (5),
Treatment of Sludge reactor (6)；Municipal sewage raw water box (1) is provided with overflow pipe (1.1) and blow-down pipe (1.2)；
Municipal sewage raw water box (1) is connected with except organic reactor (2) water inlet pipe by intake pump (2.1)
Connect；Except organic reactor (2) is divided into several compartment, be crisscross arranged up and down flowing hole according to water (flow) direction
Connect each compartment, be provided with aeration head (2.3), air compressor machine (2.7), gas flowmeter (2.6) and gas
Adjustable valve (2.5)；Except organic reactor (2) by intermediate sedimentation pond connecting tube (2.4) with in
Between sedimentation tank (3) connect；Intermediate sedimentation pond (3) by sludge reflux pump (2.2) with except Organic substance anti-
The water inlet pipe answering device (2) is connected；Intermediate sedimentation pond outlet pipe (3.3) intakes with self-supported denitrification reactor
Pipe (4.1) connects；Self-supported denitrification reactor (4) is divided into 7 compartments, and anoxic zone (4.3) are with aerobic
District (4.4) is alternately arranged, and the flowing hole that is crisscross arranged up and down according to water (flow) direction connects each compartment, anoxia
District is provided with agitator (4.6), and adds floating stuffing；Aerobic zone aerating system；Self-supported denitrification reactor
(4) it is connected with second pond (5) by second pond connecting tube (4.7)；Second pond (5) is returned by mud
Stream pump (4.5) is connected with self-supported denitrification reactor (4) first compartment；Sludge reflux pump (4.5) with
Treatment of Sludge reactor enters mud pipe (6.5) and is connected；Treatment of Sludge reactor (6) is a uncovered cell body, if
Blow-down pipe (6.1), mud is had to add pump (6.2), chemical feed pipe (6.3), agitator (6.4) and enter
Mud pipe (6.5)；Treatment of Sludge reactor (6) adds pump (6.2) by mud and reacts with autotrophic denitrification
Device (4) first compartment is connected.
Test uses certain community life sewage as former water, and concrete water quality is as follows: COD concentration is
150-320mg/L；Concentration is 52-80mg/L,
Pilot system is as it is shown in figure 1, each reactor all uses lucite to make, except organic reactor is effective
Volume is 16L, is divided into 2 compartments；Self-supported denitrification reactor dischargeable capacity is 10L；Treatment of Sludge is anti-
Answering device effective volume is 4L.
Carrying out practically operation is as follows:
1) system is started: inoculation traditional wastewater treatment plant activated sludge adds to except organic reactor (2),
Making sludge concentration is 2000mg/L；Inoculation has the activated sludge of nitrification activity and adds to autotrophic denitrification reaction
Device (4) so that it is concentration reaches 3000mg/L；Add biological outstanding to the anoxic zone of self-supported denitrification reactor
Floating filler, packing volume ratio is 30%.
2) when running, regulation operation is as follows:
2.1) control to be 3 days except the sludge age of organic reactor (2), aerobic zone Dissolved Oxygen concentration Control
For 0.5-1.0mg/L, return sludge ratio is 50%, and hydraulic detention time is 60min；
2.2) self-supported denitrification reactor (4) aerobic zone dissolved oxygen concentration is 0.3-0.8mg/L, surplus by discharge
It is 15 days that remaining mud controls sludge age；
2.3) self-supported denitrification reactor (4) sludge back flow quantity is 0.5 times of this reactor inflow, wherein
The 5% of sludge reflux amount is delivered to Treatment of Sludge reactor (6)；
2.4) by adding sodium nitrite to Treatment of Sludge reactor (6), nitrite nitrogen in reactor is made
Concentration is 300mg/L, and is 5.5-6.0 by add acid or alkali controlling pH in Treatment of Sludge reactor, dirty
The mud time of staying is 20h.
Result of the test shows: after stable, except organic reactor effluent COD concentration is 60-90mg/L,Concentration 50-75mg/L,Concentration is 0-2.5mg/L,Concentration 0-1.0mg/L；From
Supporting denitrification reactor effluent COD concentration is 35-60mg/L,Concentration 0-8mg/L,Concentration
For 0-1.5mg/L,Concentration 4.0-9.0mg/L.
Claims (1)
1. processing, based on FNA, the method that mud realizes flowing municipal sewage autotrophic denitrification continuously, its feature exists
In, apply following device: be provided with municipal sewage raw water box (1), except organic reactor (2), intermediate sedimentation
Pond (3), self-supported denitrification reactor (4), second pond (5), Treatment of Sludge reactor (6)；Municipal sewage is former
Water tank (1) is provided with overflow pipe (1.1) and blow-down pipe (1.2)；Municipal sewage raw water box (1) passes through intake pump
(2.1) it is connected with except organic reactor (2) water inlet pipe；Except organic reactor (2) is divided into several
Compartment, the flowing hole that is crisscross arranged up and down according to water (flow) direction connects each compartment, is provided with aeration head (2.3), sky
Press (2.7), gas flowmeter (2.6) and air volume regulating valve (2.5)；Except organic reactor (2) leads to
Cross intermediate sedimentation pond connecting tube (2.4) to be connected with intermediate sedimentation pond (3)；Intermediate sedimentation pond (3) is by dirt
Mud reflux pump (2.2) is connected with except the water inlet pipe of organic reactor (2)；Intermediate sedimentation pond outlet pipe (3.3)
It is connected with self-supported denitrification reactor water inlet pipe (4.1)；Self-supported denitrification reactor (4) is divided into 7 compartments, lacks
Oxygen district (4.3) is alternately arranged with aerobic zone (4.4), and the flowing hole that is crisscross arranged up and down according to water (flow) direction connects
Each compartment, anoxic zone is provided with agitator (4.6), and adds floating stuffing；Aerobic zone is provided with aerating system；
Self-supported denitrification reactor (4) is connected with second pond (5) by second pond connecting tube (4.7)；Second pond (5)
It is connected with self-supported denitrification reactor (4) first compartment by sludge reflux pump (4.5)；Sludge reflux pump (4.5)
Enter mud pipe (6.5) to be connected with Treatment of Sludge reactor；Treatment of Sludge reactor (6) is a uncovered cell body, if
Blow-down pipe (6.1), mud is had to add pump (6.2), chemical feed pipe (6.3), agitator (6.4) and enter mud pipe (6.5)；
Treatment of Sludge reactor (6) adds pump (6.2) and self-supported denitrification reactor (4) first compartment by mud
It is connected；
The step of method is:
1) system is started: inoculation traditional wastewater treatment plant activated sludge adds to except organic reactor (2),
Making sludge concentration is 2000-3000mg/L；Inoculation has the activated sludge of nitrification activity and adds to autotrophic denitrification anti-
Answer device (4) so that it is concentration reaches 1500-3000mg/L；Biology is added to the anoxic zone of self-supported denitrification reactor
Floating stuffing, packing volume is than for 20-50%；
2) when running, regulation operation is as follows:
2.1) control as 2-6 days except the sludge age of organic reactor (2), aerobic zone Dissolved Oxygen concentration Control
For 0.5-1.5mg/L, return sludge ratio is 50-100%, and hydraulic detention time is 30-60min；
2.2) self-supported denitrification reactor (4) aerobic zone dissolved oxygen concentration is 0.3-0.8mg/L, is remained by discharge
It is 15-20 days that mud controls sludge age；
2.3) self-supported denitrification reactor (4) sludge back flow quantity is 0.5-1.5 times of this reactor inflow, wherein
The 5-10% of sludge reflux amount is delivered to Treatment of Sludge reactor (6)；
2.4) by adding sodium nitrite to Treatment of Sludge reactor (6), in making reactor, nitrite nitrogen is dense
Degree for 300-2000mg/L, and by add acid or alkali to control pH in Treatment of Sludge reactor be 5.0-6.0, dirty
The mud time of staying is 12-24h.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986923B (en) * | 2015-07-27 | 2017-06-06 | 北京工业大学 | A kind of apparatus and method of the multistage A/O biological denitrificaions based on municipal sewage short distance nitration Anammox |
| CN105254129B (en) * | 2015-11-04 | 2017-07-14 | 北京城市排水集团有限责任公司 | A kind of regeneration of urban sewage processing unit and its processing method |
| CN105800776B (en) * | 2016-04-14 | 2019-05-21 | 湖南大学 | One kind reducing N in sewage disposal process2The FNA effluent technique of O discharge |
| CN106830573B (en) * | 2017-04-07 | 2020-03-13 | 北京工业大学 | Low-energy-consumption urban sewage denitrification method based on enhanced carbon capture and anaerobic ammonia oxidation |
| CN108409033B (en) * | 2018-03-13 | 2021-02-02 | 北京工业大学 | Device and method for advanced nitrogen and phosphorus removal of segmented water inlet UCT by FNA (nitrogen rich aeration) enhanced short-cut nitrification |
| CN108217950B (en) * | 2018-03-13 | 2021-08-13 | 北京工业大学 | Device and method for FNA (FNA) enhanced sludge fermentation and short-range nitrogen and phosphorus removal of sewage |
| CN111924962B (en) * | 2020-08-24 | 2022-04-12 | 北京工业大学 | Method for rapidly realizing short-cut nitrification treatment of urban sewage based on FNA pretreatment biomembrane |
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| CN201220931Y (en) * | 2008-04-02 | 2009-04-15 | 北京城市排水集团有限责任公司 | Apparatus for realizing sludge shortcut nitrification by using FA and FNA control |
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