CN108439596A - A kind of method of one-part form semi-hitrosation-Anammox-denitrification coupling technique processing town domestic sewage - Google Patents
A kind of method of one-part form semi-hitrosation-Anammox-denitrification coupling technique processing town domestic sewage Download PDFInfo
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- CN108439596A CN108439596A CN201810306228.1A CN201810306228A CN108439596A CN 108439596 A CN108439596 A CN 108439596A CN 201810306228 A CN201810306228 A CN 201810306228A CN 108439596 A CN108439596 A CN 108439596A
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- anammox
- aeration
- hitrosation
- oxidation ditch
- sludge
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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
Abstract
The invention discloses the methods that one-part form semi-hitrosation Anammox denitrification coupling technique handles town domestic sewage.Ready semi-hitrosation sludge and anaerobic ammonium oxidation sludge are added in oxidation ditch, the non-aeration region in oxidation ditch is hung with the gimp formula filler of Anammox biomembrane simultaneously, oxidation ditch is run using continuous stream mode, setting bottom plug-flow pushes flow in gallery, using high load capacity, low DO concentration, while becoming the integrated control strategy operation domestication of tolerance aeration control aeration intensity at times.Initial operating stage is using artificial distribution's mode, oxidation ditch stable operation and total nitrogen removal efficiency up to after 45%, and nitrogen removal rate is maintained at 80% or more after operation 70 days.The method of the present invention, solves that existing processing town domestic sewage total nitrogen removal effect is low, and effluent quality is difficult to stably reach urban wastewater treatment firm pollutant emission standard level-one A standards and the high problem of operating cost.
Description
Technical field
The invention belongs to technical field of biological treatment of wastewater, and in particular to the one-part form semi-hitrosation-anti-nitre of Anammox-
Change the method for coupling technique processing town domestic sewage.
Background technology
Urban wastewater treatment firm is faced with increasingly serious bid raising transformation requirements, many urban wastewater treatment firm water outlets at present
Water quality requirement is increased to A standards by urban wastewater treatment firm pollutant emission standard level-one B standard, but existing traditional biological
Denitrification process is poor for nitrogen removal rate, and capital construction, operating cost are higher, therefore develops new and effective sanitary sewage disposal
Technology, reduction investment operating cost are imperative.
Oxidation ditch process using very extensive, belongs to a kind of modification of activated sludge process in town domestic sewage treatment plant
Pattern is gained the name because its structures is closed gallery shape.For oxidation ditch by aeration and mixing plant, it is in certain to make mixed liquor
Plug-flow advances speed forward, and the gallery not being aerated forms anoxic zone, and oxidation ditch is real using different distributions of the dissolved oxygen in ditch
The removal of existing organic matter and nitrogen.Oxidation ditch process flow is simple, convenient operation and management, stable effluent quality, but sanitary sewage
Discharge standard by《Urban wastewater treatment firm pollutant emission standard》（GB18918-2002）Level-one B is promoted to after level-one A standards,
The technique is up to standard more difficult and operating cost dramatically increases, and limits it and further applies.
One-part form semi-hitrosation-Anammox-denitrification coupling technique is using between Nitrosomas, anaerobic ammonia oxidizing bacteria
Synergistic effect, ammonia nitrogen is converted into nitrite, nitrogen is generated using ammonia nitrogen and nitrite, realizes the removing of nitrogen, together
When nitrogen removal rate further increased by denitrifying bacterium, it is ensured that stable water outlet is up to standard.The coupling technique is by all biochemical reactions
It concentrates in a reactor, simplifies technological process, reduce floor space and capital cost, ammonia nitrogen is only partially converted into Asia
Nitrate nitrogen reduces aeration quantity, reduces operation energy consumption, and sludge treatment expense also greatly reduces.The coupling is realized in oxidation ditch
Technique is closed, while efficiently promoting oxidation ditch process total nitrogen treatment effect, further decreases operating cost, there is significant society
Meeting, economy and environmental benefit.
But Core Feature strain Nitrosomas, the anaerobic ammonia oxidizing bacteria of the technique are autotrophic bacterium, process operation time
Long, the anaerobic ammonia oxidation reactor of pilot-scale, which often starts, just needs several months, and Practical Project uses required startup
Time is then more long.In addition, autotrophic bacterium, to temperature, pH sensitive, sludge settling property is poor, sludge loss is serious, and process adjustment
It is more difficult, seriously constrain further applying for technique.The present invention proposes one-part form semi-hitrosation-anti-nitre of Anammox-
The method for changing coupling technique processing town domestic sewage, strong technical support is provided for the engineering of the technique.
Invention content
The purpose of the present invention is to provide one-part form semi-hitrosation-Anammox-denitrification coupling techniques to handle cities and towns
The method of sanitary sewage, solve existing oxidation ditch process processing town domestic sewage total nitrogen poor removal effect, operating cost compared with
High and semi-hitrosation-anaerobic ammonia oxidation process starts problem slow, that operation regulation and control are difficult, sludge loss is serious.
To achieve the above object, the present invention adopts the following technical scheme that：
The method that one-part form semi-hitrosation-Anammox-denitrification coupling technique handles town domestic sewage, according to following step
It is rapid to carry out：
Step 1：Prepare oxidation ditch, the successful semi-hitrosation sludge of domestication, anaerobic ammonium oxidation sludge, hang with Anammox biology
The gimp formula filler of film；
Step 2：In mass ratio 1 in oxidation ditch:2 are added ready semi-hitrosation sludge and anaerobic ammonium oxidation sludge, make oxygen
Change a concentration of 3300 ~ 3400 mg/L of suspended sludge in ditch, while the non-aeration region in oxidation ditch is hung with Anammox
The gimp formula filler of biomembrane increases Anammox bacteria biomass in oxidation ditch；
Step 3：Oxidation ditch is run using continuous stream mode, and setting bottom plug-flow pushes flow, hydraulic detention time 20 in gallery
Hour；Using high load capacity, low DO concentration, while becoming the integrated control strategy fortune of tolerance aeration control aeration intensity at times
Row domestication；110 ~ 130mg/L of influent ammonium concentration, gradually reduces influent load；Gallery is divided to become tolerance aeration, aeration zone at times
Domain Dissolved Oxygen concentration Control is controlled in 0.2mg/L, non-aeration region soluble oxygen concentration in 0.1mg/L or less；Maintain pH be 7.8 ~
8.3,26 ~ 30 DEG C of temperature；Initial operating stage using artificial distribution's mode, oxidation ditch stable operation and total nitrogen removal efficiency up to after 45%,
The practical town sewage of processing.Nitrogen removal rate is maintained at 80% or more after operation 70 days, and water outlet reaches urban wastewater treatment firm pollution
Object discharge standard level-one A standards.
Submersible agitator is set in each gallery bottom of oxidation ditch and pushes flow, hydraulic detention time 20 hours.
A concentration of 3300 ~ 3400 mg/L of suspended sludge, semi-hitrosation sludge and anaerobic ammonium oxidation sludge are in mass ratio
1:2 add.
Anammox biomembrane is attached on the gimp formula filler, gimp formula filler is placed on the non-exposure in oxidation ditch
Gas region, to increase Anammox bacteria biomass in oxidation ditch.
Described point of gallery becomes tolerance aeration at times, and oxidation ditch gallery is divided into aerated space and non-aeration region, exposes
In gas region according to 4 hours be a period, preceding 2 hours aeration quantity be 1 m3/ h, rear 2 hours aeration quantity are 2 m3/ h, alternately into
Row, aerated space Dissolved Oxygen concentration Control is in 0.2mg/L, and the control of non-aeration region soluble oxygen concentration is in 0.1mg/L hereinafter, aeration
Alternately variation is conducive to promote short distance nitration effect intensity.
At 26 ~ 30 DEG C, pH is 7.8 ~ 8.3 for the temperature control of the oxidation ditch.
The practical town sewage of process, nitrogen removal rate are maintained at 80% or more, and water outlet reaches urban wastewater treatment
Factory's pollutant emission standard level-one A standards.
In the training period, the indexs such as COD, ammonia nitrogen, nitrite nitrogen, nitrate nitrogen in Inlet and outlet water can be monitored, with
Grasp the process that technique starts.
Non-aeration region of the present invention in oxidation ditch is hung with the gimp formula filler of Anammox biomembrane, increases oxygen
Change Anammox bacteria biomass in ditch, while anaerobic ammonia oxidizing bacteria being retained on gimp formula filler, efficiently solves anaerobism
The sludge loss problem of ammonia oxidation bacteria is conducive to the quick startup and stable operation of technique.
The present invention is in the stage of reaction, using high load capacity, low DO concentration, while becoming tolerance aeration control aeration at times
Oxidation ditch gallery is divided into aerated space and non-aeration region by the integrated control strategy operation domestication of intensity, is divided in aerated space
Period becomes tolerance aeration control, and alternately variation is conducive to promote semi-hitrosation effect aeration intensity.
The beneficial effects of the present invention are：
（1）The present invention is hung with the gimp formula filler of Anammox biomembrane by the non-aeration region in oxidation ditch, increases
Add Anammox bacteria biomass in oxidation ditch, while anaerobic ammonia oxidizing bacteria being retained on gimp formula filler, efficiently solves
The sludge loss problem of anaerobic ammonia oxidizing bacteria accelerates the startup time of technique, it is only necessary to stable operation can be realized within 70 days.
（2）The present invention is in the stage of reaction, using high load capacity, low DO concentration, while becoming tolerance aeration control at times
Oxidation ditch gallery is divided into aerated space and non-aeration region, aerated space by the integrated control strategy operation domestication of aeration intensity
Inside become tolerance aeration control at times, realizes the flexible control of aeration quantity, alternately variation is conducive to promote half nitrous aeration intensity
Change effect.
Description of the drawings
Fig. 1 is 1-51 days ammonia nitrogens of Carrousel oxidation ditches, nitrite and nitrate removal effect statistical chart；
Fig. 2 is 1-51 days total nitrogen removal effect statistical charts of Carrousel oxidation ditches；
Fig. 3 is 52-80 days ammonia nitrogens of Carrousel oxidation ditches, nitrite and nitrate removal effect statistical chart；
Fig. 4 is 52-80 days total nitrogen removal effect statistical charts of Carrousel oxidation ditches.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention will be further described, but the present invention is not limited only to these embodiments.
Embodiment 1
Oxidation ditch is made of stainless steel, high 1.8m, 6 m of total measurement (volume)3.Ditch body is made of 4 gallerys, is respectively designated as gallery 1, corridor
Road 2, gallery 3 and gallery 4, install bottom plug flow device in gallery 1 and gallery 3, and plug-flow speed regulates and controls online.In 2 He of gallery
Microporous aeration device, real-time control aeration are laid in gallery 4.Entire reactor is run at ambient temperature.It is pressed in oxidation ditch
Mass ratio 1:2 are added ready semi-hitrosation sludge and anaerobic ammonium oxidation sludge, keep suspended sludge in oxidation ditch a concentration of
3300 mg/L, while the non-aeration region in oxidation ditch is hung with the gimp formula filler of Anammox biomembrane, increases oxygen
Change Anammox bacteria biomass in ditch.Initial start stage uses artificial distribution, total nitrogen removal efficiency to be used up to 45% or more laggard water
Certain sewage treatment plant's setting pot water outlet.Using high load capacity, low DO concentration, while it is strong to become tolerance aeration control aeration at times
The integrated control strategy operation domestication of degree；Water inlet is nitrogenous effluent, and ammonia nitrogen is intake initial concentration as 110-130 mg/L, gradually dropped
Low influent load, while addition trace element of intaking；Gallery is divided to become tolerance aeration at times, aeration control is in 1-2 m3/ h,
Aerated space Dissolved Oxygen concentration Control is controlled in 0.2mg/L or so, non-aeration region soluble oxygen concentration in 0.1mg/L or less；Into
Water pH is between 7.8 ~ 8.3,26 ~ 30 DEG C of temperature, hydraulic detention time 20 hours.Nitrogen removal rate is maintained at after operation 70 days
80% or more, water outlet reaches urban wastewater treatment firm pollutant emission standard level-one A standards.
Reactor of the present invention is Carrousel oxidation ditches, but is equally applicable to other kinds of oxidation ditch reaction
Device.The present invention handles practical town domestic sewage in oxidation ditch, by operation in 70 days, successfully realizes half nitrous of one-part form
The startup of change-Anammox-denitrification coupling technique, effectively shortens semi-hitrosation-Anammox-denitrification coupling technique
The startup time.This method is aerated by rational state modulator, especially time-division transfer, while non-aeration region is hung with
The gimp formula filler of Anammox biomembrane increases Anammox bacteria biomass in oxidation ditch, effectively catching anaerobism ammonia oxygen
Change bacterium, accelerates the screening enrichment of functional flora in reactor, make fast start up of reactor success.
Wherein Fig. 1, Fig. 2 illustrate that Carrousel oxidation ditches run 1-51 days every pollutant removals, by gradual
Reduce water inlet NH4 +- N concentration makes system gradually adapt to low NH4 +- N city domestic sewages.Later stage operation phase, system NH4 +-N
Removal amount is still maintained at 35mg/L or so, is discharged NO2 -- N concentration maintains 5mg/L hereinafter, NO3 -- N concentration maintain 2mg/L with
Under, TN removal amounts are maintained at 30mg/L, and TN removal rates are 45%.
Fig. 3, Fig. 4 illustrate that Carrousel oxidation ditches run 52-80 days items pollutant removals the since 72d,
NH4 +- N aqueous concentrations maintain 2mg/L hereinafter, NO2 -- N and NO3 -- N concentration is kept in 1mg/L, and water outlet TN is maintained at
For 4mg/L hereinafter, TN removal rates are maintained at 80% or more, water outlet reaches urban wastewater treatment firm pollutant emission standard level-one A marks
It is accurate.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification should all belong to the covering scope of the present invention.
Claims (7)
1. a kind of method of one-part form semi-hitrosation-Anammox-denitrification coupling technique processing town domestic sewage, special
Sign is：It follows the steps below：
Step 1：Prepare oxidation ditch, the successful semi-hitrosation sludge of domestication, anaerobic ammonium oxidation sludge, hang with Anammox biology
The gimp formula filler of film；
Step 2：Ready semi-hitrosation sludge and anaerobic ammonium oxidation sludge are added in oxidation ditch, makes to suspend in oxidation ditch dirty
A concentration of 3300 ~ 3400 mg/L of mud, while the non-aeration region in oxidation ditch is hung with gimp formula filler；
Step 3：Oxidation ditch is run using continuous stream mode, using high load capacity, low DO concentration, while being become tolerance at times and being exposed
The integrated control strategy operation domestication of gas control aeration intensity；Initial operating stage uses artificial distribution's mode, oxidation ditch stable operation
And total nitrogen removal efficiency handles practical town sewage up to after 45%；Nitrogen removal rate is maintained at 80% or more after operation 70 days, water outlet
Reach urban wastewater treatment firm pollutant emission standard level-one A standards.
2. one-part form semi-hitrosation-Anammox-denitrification coupling technique according to claim 1 handles urban life
The method of sewage, it is characterised in that：It is described to use high load capacity, low DO concentration, while becoming tolerance aeration control at times and exposing
The integrated control strategy operation domestication of gas intensity, specially：110 ~ 130mg/L of influent ammonium concentration, gradually reduces influent load；
Gallery is divided to become tolerance aeration at times, for aerated space Dissolved Oxygen concentration Control in 0.2mg/L or so, non-aeration region soluble oxygen is dense
Degree control is in 0.1mg/L or less.
3. one-part form semi-hitrosation-Anammox-denitrification coupling technique according to claim 1 handles urban life
The method of sewage, it is characterised in that：Submersible agitator is set in each gallery bottom of oxidation ditch and pushes flow, hydraulic retention
20 hours time.
4. one-part form semi-hitrosation-Anammox-denitrification coupling technique according to claim 1 handles urban life
The method of sewage, it is characterised in that：The semi-hitrosation sludge and anaerobic ammonium oxidation sludge in mass ratio 1:2 add.
5. one-part form semi-hitrosation-Anammox-denitrification coupling technique according to claim 1 handles urban life
The method of sewage, it is characterised in that：Anammox biomembrane is attached on the gimp formula filler, gimp formula filler is placed on
Non-aeration region in oxidation ditch, to increase Anammox bacteria biomass in oxidation ditch.
6. one-part form semi-hitrosation-Anammox-denitrification coupling technique according to claim 1 handles urban life
The method of sewage, it is characterised in that：It is 7.8 ~ 8.3 that oxidation ditch, which maintains pH, in step 3, and temperature control is 26 ~ 30 DEG C.
7. one-part form semi-hitrosation-Anammox-denitrification coupling technique according to claim 1 handles urban life
The method of sewage, it is characterised in that：Described point of gallery become at times tolerance aeration, by oxidation ditch gallery be divided into aerated space and
Non-aeration region according to 4 hours was a period in aerated space, and preceding 2 hours aeration quantity are 1 m3/ h, rear 2 hours aeration quantity are 2
m3/ h, alternately, aerated space Dissolved Oxygen concentration Control exist in 0.2mg/L, the control of non-aeration region soluble oxygen concentration
0.1mg/L is conducive to promotion short distance nitration effect hereinafter, aeration intensity alternately changes.
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| CN201810306228.1A CN108439596B (en) | 2018-04-08 | 2018-04-08 | Method for treating urban domestic sewage by one-stage type semi-nitrosation-anaerobic ammonia oxidation-denitrification coupling process |
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| CN201810306228.1A CN108439596B (en) | 2018-04-08 | 2018-04-08 | Method for treating urban domestic sewage by one-stage type semi-nitrosation-anaerobic ammonia oxidation-denitrification coupling process |
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| CN111908605A (en) * | 2020-08-28 | 2020-11-10 | 桂林理工大学 | Method for treating domestic sewage by anaerobic ammonia oxidation-oxidation ditch coupling |
| CN115231696A (en) * | 2022-07-22 | 2022-10-25 | 知和环保科技有限公司 | Method for quickly starting shortcut nitrification |
| CN115536214A (en) * | 2022-10-11 | 2022-12-30 | 中国恩菲工程技术有限公司 | Method for treating leachate of waste incineration plant |
| CN115557607A (en) * | 2022-08-31 | 2023-01-03 | 达斯玛环境科技（北京）有限公司 | Integrated biological reaction tank system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115536214A (en) * | 2022-10-11 | 2022-12-30 | 中国恩菲工程技术有限公司 | Method for treating leachate of waste incineration plant |
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