CN110342634A - The micro- oxygen sludge bed process of membrane aeration biomembrane and its wastewater treatment method - Google Patents
The micro- oxygen sludge bed process of membrane aeration biomembrane and its wastewater treatment method Download PDFInfo
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- CN110342634A CN110342634A CN201910605521.2A CN201910605521A CN110342634A CN 110342634 A CN110342634 A CN 110342634A CN 201910605521 A CN201910605521 A CN 201910605521A CN 110342634 A CN110342634 A CN 110342634A
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- Prior art keywords
- oxygen
- sludge bed
- micro
- biomembrane
- sludge
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Classifications
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The micro- oxygen sludge bed process of membrane aeration biomembrane disclosed by the invention and its wastewater treatment method, belong to sewage water denitrification process field.It is formed using the micro- oxygen Sludge Bed of biomembrane, Sludge Bed water inlet pipe, Sludge Bed outlet pipe, sludge pipe, biofilm aeration component, air pump, circulating pump, peristaltic pump, air flow meter and pressure gauge.Processing method: under micro- oxygen environment, the mutualism of aerobic bacteria, anaerobic bacteria and facultative anaerobic bacteria, cometabolism are realized；It is aerated the efficient oxygen transfer efficiency of component using film simultaneously, waste water flows the reversed diffusion to form oxygen and pollutant in the outer surface of biomembrane, and effectively removing for pollutant in bioreactor may be implemented.The present invention is suitable for the denitrogenation processing of municipal sewage and industrial wastewater, has many advantages, such as that treatment effeciency is high, energy utilization rate is high, outlet effect is stable, starting speed is fast.
Description
Technical field
The present invention relates to the micro- oxygen sludge bed process of membrane aeration biomembrane and its wastewater treatment methods, belong to sewage water denitrification processing
Field.
Background technique
In recent years, in order to meet increasing sewage treatment discharge standard, need to consume more energy has to meet
The removal of machine object and nitrogen pollutant.Traditional activated sludge process, generally existing aeration energy consumption is high, nitric efficiency is low, denitrification carbon
The problems such as source is insufficient, and surplus sludge volume is big, has been difficult to meet the sustainable development demand of low-carbon energy-saving.
Membrane aeration biomembrane component is a kind of novel water treatment aeration mode, belongs to micro- oxygen technology, it mainly passes through
Hydrophobic gas separates hollow-fibre membrane, is coupled using the characteristics of its gas-liquid separation with traditional biofilm reactor.Point
Not only play a part of oxygen transmitting in the reactor from film and provide oxygen for microorganism in liquid phase, while the still load of microorganism
Body.Membrane aeration biomembrane component has coefficient of oxygen utilization high, and energy consumption reduces by 50% than traditional aeration mode.
Currently, existing the several of micro- oxygen technology represent technique, mainly there are OLAND technique, CANON technique etc., above-mentioned work
The disadvantages of skill still uses traditional micro-pore aeration mode, and that there are energy utilization rates is low, aeration is uneven.
Summary of the invention
Exist than waste water and low C/N than waste water for prior art C/N general for processing and takes up an area big, high energy consumption, dirt
The drawbacks such as sludge treatment technology is complicated and capital expenditure is big, the object of the present invention is to provide the micro- oxygen sludge bed process of membrane aeration biomembrane
And its wastewater treatment method.
The micro- oxygen sludge bed process of membrane aeration biomembrane of the present invention adopts the following technical solutions realization: film aeration
The micro- oxygen sludge bed process of biomembrane, including the micro- oxygen Sludge Bed of biomembrane, Sludge Bed water inlet pipe and setting are in the micro- oxygen sludge of biomembrane
Sludge Bed outlet pipe on the side wall of bed；The side wall of the micro- oxygen Sludge Bed of biomembrane is additionally provided with sludge pipe close to the position of bottom；It is raw
The biofilm aeration component being positioned partially or entirely in the sludge blanket of Sludge Bed lower part is placed in the micro- oxygen Sludge Bed of object film；Sludge Bed
Circulating pump/peristaltic pump is serially connected on water inlet pipe with draw outside sludge；The biofilm aeration component is made of hollow-fibre membrane,
Biofilm aeration component one end is located at the air pump outside the micro- oxygen Sludge Bed of biomembrane by air inlet pipeline connection, on air inlet pipeline
It is serially connected with the first air flow meter and first pressure gauge, so that air or purity oxygen is passed through doughnut film transfer by swabbing action
To the micro- oxygen Sludge Bed of biomembrane and partly or entirely it is immersed in the sludge blanket of Sludge Bed lower part；The other end of biofilm aeration component
Biomembrane is discharged via the second air flow meter and second pressure gauge being serially connected on gas exhaust piping in air by gas exhaust piping
Micro- oxygen Sludge Bed.
The working principle of the micro- oxygen sludge bed process of membrane aeration biomembrane of the present invention: required processing waste water passes through sludge
Bed water inlet pipe enters micro- oxygen Sludge Bed, and the sludge blanket and biofilm aeration assembly surface of Sludge Bed bottom are formed by biomembrane pair
Suspended matter in required processing waste water is retained；Oxygen transfer, which supplies institute, to be realized to micro- oxygen Sludge Bed by biofilm aeration component
Aerobic gas, and control dissolved oxygen concentration 0.1mg/L ~ 1mg/L；By handling waste water under the action of micro- oxygen Sludge Bed microorganism.?
Under such micro- oxygen environment, aerobic bacteria, anaerobic bacteria and amphimicrobe mutualism realize that short-cut nitrification and denitrification, Simultaneous Nitrification are anti-
NH is realized in nitrification, oxidative degradation etc.4 +The efficient removal of the pollutants such as-N and organic matter.
Wastewater treatment method of the present invention using the micro- oxygen sludge bed process of membrane aeration biomembrane is achieved in that
It is more useless than waste water and low C/N ratio for handling general C/N using the wastewater treatment method of the micro- oxygen sludge bed process of membrane aeration biomembrane
Water the described method comprises the following steps:
Waste water is entered by Sludge Bed water inlet pipe from biomembrane micro- oxygen Sludge Bed bottom through circulating pump/peristaltic pump, by biofilm aeration
Pollutant in the microorganism and Sludge Bed flora processing waste water of the outer apposition growth of component, provides technique by biofilm aeration component
Required oxygen makes sludge by the air flow meter and pressure gauge control amount of oxygen on Sludge Bed water inlet pipe and Sludge Bed outlet pipe
Middle dissolved oxygen concentration is maintained at 0.1mg/L ~ 1mg/L；Waste water after treatment, is discharged by Sludge Bed outlet pipe overflow, is closed
Lattice water outlet.
The present invention uses the micro- oxygen sludge bed process of membrane aeration biomembrane, adjusts reactor by control aeration pressure and flow
Dissolved oxygen concentration improves oxygen transfer efficiency, achievees the effect that energy consumption is effectively reduced.This technique is handled in reality stain disease is solved
In application have important realistic meaning.
Beneficial effects of the present invention:
1. aeration mode of the present invention is that the film under micro-oxygen conditions is aerated component, there is higher oxygen transfer efficiency and lower exposure
Atmospheric pressure, operation energy consumption are low.
2. service condition of the present invention is low C/N ratio and general C/N ratio, it is not necessarily to additional carbon, operating cost is low.
3. the present invention is jointly processed by waste water by micro- oxygen Sludge Bed base sludge layer and film aeration component biomembrane, energy is handled
Power is high and stable, and state modulator is simple, is suitble to large-scale production.
Detailed description of the invention
The flow diagram of the micro- oxygen sludge bed process of Fig. 1 membrane aeration biomembrane of the present invention.
The micro- oxygen Sludge Bed of 1- biomembrane, 2- Sludge Bed water inlet pipe, 3- Sludge Bed outlet pipe, 4- sludge pipe, 5- biomembrane expose
Pneumatic module, 6- air pump, 7- circulating pump/peristaltic pump, the first air flow meter of 8-, 9- first pressure gauge, the second air mass flow of 10-
Meter, 11- second pressure gauge.
Specific embodiment
Technical solution of the present invention is not limited to specific embodiment set forth below:
Biofilm aeration component 5 unit volume effective film area control in 0.001-1 ㎡/L.
Biofilm aeration component 5 is fully immersed in reactor bottom sludge blanket.Biofilm aeration component is Hangzhou sky day
The production of film Science and Technology Ltd., name of product are polypropylene hydrophobic hollow-fibre membrane.
The total volume that sludge volume accounts for the micro- oxygen Sludge Bed 1 of biomembrane is controlled in 1-100%.
The micro- oxygen sludge bed process of membrane aeration biomembrane of the present invention adopts the following technical solutions realization: film aeration
The micro- oxygen sludge bed process of biomembrane includes the micro- oxygen Sludge Bed of biomembrane, Sludge Bed water inlet pipe, Sludge Bed outlet pipe, sludge pipe, life
Object film is aerated component, air pump, circulating pump/peristaltic pump, the first air flow meter, first pressure gauge, the second air flow meter, the
Two pressure gauges.The micro- oxygen Sludge Bed of biomembrane, Sludge Bed water inlet pipe, Sludge Bed outlet pipe, sludge pipe, film are aerated component, sky
Air pump, circulating pump/peristaltic pump, the first air flow meter, first pressure gauge, the second air flow meter, second pressure gauge constitute one
A processing unit；The biofilm aeration component, is made of hollow-fibre membrane, and the external air pump of film aeration component is simultaneously immersed in dirt
In the sludge blanket of mud bed lower part, air or purity oxygen is set to be transferred to the micro- oxygen sludge of biomembrane by hollow-fibre membrane by swabbing action
Bed.
The working principle of the micro- oxygen sludge bed process of membrane aeration biomembrane of the present invention: required processing waste water passes through sludge
Bed water inlet pipe enters micro- oxygen Sludge Bed, and the sludge blanket and biofilm aeration assembly surface of Sludge Bed bottom are formed by biomembrane pair
Suspended matter in required processing waste water is retained；Oxygen transfer, which supplies institute, to be realized to micro- oxygen Sludge Bed by biofilm aeration component
Aerobic gas, and control dissolved oxygen concentration 0.1mg/L ~ 1mg/L；By handling waste water under the action of micro- oxygen Sludge Bed microorganism.?
Under such micro- oxygen environment, aerobic bacteria, anaerobic bacteria and amphimicrobe mutualism realize that short-cut nitrification and denitrification, Simultaneous Nitrification are anti-
NH is realized in nitrification, oxidative degradation etc.4 +The efficient removal of the pollutants such as-N and organic matter.
Operation method one: using described in specific embodiment processing C/N than for 0.8 low C/N it is more specific than the method for waste water
It is to sequentially include the following steps:
Waste water is entered by Sludge Bed water inlet pipe 2 from micro- 1 bottom of oxygen Sludge Bed of biomembrane through peristaltic pump, by biofilm aeration component 5
Pollutant in the microorganism of outer apposition growth and Sludge Bed flora processing waste water, provides technique institute by biofilm aeration component 5
Aerobic gas, by the first air flow meter 8 and first pressure gauge 9 and second on Sludge Bed water inlet pipe 2 and Sludge Bed outlet pipe 3
Air flow meter 10 and first pressure gauge 11 control amount of oxygen, control dissolved oxygen concentration 0.3mg/L ~ 0.5mg/L；Waste water is at
After reason, it is discharged by 3 overflow of Sludge Bed outlet pipe, obtains qualified water outlet.
Operation method two: have than the general C/N for 4.8 than the method for waste water using processing C/N described in specific embodiment
Body is to click step progress:
Waste water is entered by Sludge Bed water inlet pipe 2 from micro- 1 bottom of oxygen Sludge Bed of biomembrane through peristaltic pump, by biofilm aeration component 5
Pollutant in the microorganism of outer apposition growth and Sludge Bed flora processing waste water, provides technique institute by biofilm aeration component 5
Aerobic gas, by the first air flow meter 8 and first pressure gauge 9 and second on Sludge Bed water inlet pipe 2 and Sludge Bed outlet pipe 3
Air flow meter 10 and first pressure gauge 11 control amount of oxygen, control dissolved oxygen concentration 0.6mg/L ~ 0.9mg/L；Waste water is at
After reason, it is discharged by 3 overflow of outlet pipe, obtains qualified water outlet.
Using following embodiment verifying the invention has the advantages that:
Embodiment one: being illustrated with reference to Fig. 1 the present embodiment, and the present embodiment compares waste water using the low C/N of processing described in specific embodiment
The specific method is as follows:
Waste water is entered by Sludge Bed water inlet pipe 2 from micro- 1 bottom of oxygen Sludge Bed of biomembrane through peristaltic pump, by biofilm aeration component 5
Pollutant in the microorganism of outer apposition growth and Sludge Bed flora processing waste water, provides technique institute by biofilm aeration component 5
Aerobic gas, by the first air flow meter 8 and first pressure gauge 9 and second on Sludge Bed water inlet pipe 2 and Sludge Bed outlet pipe 3
Air flow meter 10 and first pressure gauge 11 control amount of oxygen, control dissolved oxygen concentration 0.3mg/L ~ 0.5mg/L；Waste water is at
After reason, it is discharged by 3 overflow of Sludge Bed outlet pipe, obtains qualified water outlet.
Sludge used in the sludge blanket of micro- 1 bottom of oxygen Sludge Bed of biomembrane described in above scheme be Jinzhong City, Shanxi Province just
Positive sewage plant secondary settling tank sludge.
Water quality indicator of the low C/N than waste water described in above scheme are as follows: COD 130mg/L, NH4 +-N 140mg/L, TN
160mg/L。
Treatment effect are as follows: COD removal rate >=85%, NH4 +- N >=90%, TN removal rate >=79%.
Embodiment two: being illustrated with reference to Fig. 1 the present embodiment, and the present embodiment utilizes the general C/N of processing described in specific embodiment
Than waste water, the specific method is as follows:
Waste water is entered by Sludge Bed water inlet pipe 2 from micro- 1 bottom of oxygen Sludge Bed of biomembrane through peristaltic pump, by biofilm aeration component 5
Pollutant in the microorganism of outer apposition growth and Sludge Bed flora processing waste water, provides technique institute by biofilm aeration component 5
Aerobic gas, by the first air flow meter 8 and first pressure gauge 9 and second on Sludge Bed water inlet pipe 2 and Sludge Bed outlet pipe 3
Air flow meter 10 and first pressure gauge 11 control amount of oxygen, control dissolved oxygen concentration 0.6mg/L ~ 0.9mg/L；Waste water is at
After reason, it is discharged by 3 overflow of outlet pipe, obtains qualified water outlet.
Sludge used in the sludge blanket of micro- 1 bottom of oxygen Sludge Bed of biomembrane described in above scheme be Jinzhong City, Shanxi Province just
Positive sewage plant secondary settling tank sludge.
Water quality indicator of the general C/N than waste water described in above scheme are as follows: COD 270mg/L, NH4 +-N 40mg/L, TN
56mg/L。
Treatment effect are as follows: COD removal rate >=89%, NH4 +- N >=92%, TN removal rate >=77%.
Claims (7)
1. the micro- oxygen sludge bed process of membrane aeration biomembrane, it is characterised in that: including the micro- oxygen Sludge Bed (1) of biomembrane, Sludge Bed into
Water pipe (2) and the Sludge Bed outlet pipe (3) being arranged on the side wall of the micro- oxygen Sludge Bed (1) of biomembrane；The micro- oxygen Sludge Bed of biomembrane
(1) side wall is additionally provided with sludge pipe (4) close to the position of bottom；It is placed in the micro- oxygen Sludge Bed (1) of biomembrane partly or entirely
Biofilm aeration component (5) in the sludge blanket of Sludge Bed lower part；Sludge Bed water inlet pipe is serially connected with circulating pump/wriggling on (2)
(7) are pumped with draw outside sludge；The biofilm aeration component (5) is made of hollow-fibre membrane, biofilm aeration component (5) one
End is located at the external air pump (6) of the micro- oxygen Sludge Bed (1) of biomembrane by air inlet pipeline connection, is serially connected with first on air inlet pipeline
Air flow meter (8) and first pressure gauge (9), make air or purity oxygen be transferred to life by hollow-fibre membrane by swabbing action
The micro- oxygen Sludge Bed (1) of object film is simultaneously partly or entirely immersed in the sludge blanket of Sludge Bed lower part；Biofilm aeration component (5) it is another
End is by gas exhaust piping by air via the second air flow meter (10) and second pressure gauge (11) being serially connected on gas exhaust piping
The micro- oxygen Sludge Bed (1) of biomembrane is discharged.
2. the micro- oxygen sludge bed process of membrane aeration biomembrane according to claim 1, it is characterised in that by the way that circulating pump pair is arranged
Reactor carries out Hydraulic Circulation, accelerates Biofilm Colonization speed；Peristaltic pump makes sewage flow into the micro- oxygen of biomembrane by swabbing action
Sludge Bed (1).
3. the micro- oxygen sludge bed process of membrane aeration biomembrane according to claim 1, it is characterised in that the first air mass flow of setting
(8), first pressure gauge (9) and the second air flow meter (10), second pressure gauge (11) are counted, by adjusting air pressure and sky
Throughput controls micro- oxygen Sludge Bed dissolved oxygen concentration in turn, wherein control aeration pressure is in 0-0.1Mpa.
4. the micro- oxygen sludge bed process of membrane aeration biomembrane according to claim 1, it is characterised in that biofilm aeration component (5)
Unit volume effective film area control in 0.001-1 ㎡/L.
5. the micro- oxygen sludge bed process of membrane aeration biomembrane according to claim 1, it is characterised in that biofilm aeration component (5)
It is fully immersed in reactor bottom sludge blanket.
6. the micro- oxygen sludge bed process of membrane aeration biomembrane according to claim 1, it is characterised in that sludge volume accounts for biomembrane
The total volume of micro- oxygen Sludge Bed (1) is controlled in 1-100%.
7. the wastewater treatment method of the micro- oxygen sludge bed process of membrane aeration biomembrane, using the described in any item works of claim 1 ~ 6
Skill is realized, which comprises the steps of: waste water is through circulating pump/peristaltic pump (7) by Sludge Bed water inlet pipe (2) from life
Micro- oxygen Sludge Bed (1) bottom of object film enters, microorganism and Sludge Bed flora by biofilm aeration component (5) outer apposition growth
The pollutant in waste water is managed, oxygen needed for providing technique as biofilm aeration component (5), by Sludge Bed water inlet pipe (2) and sludge
Air flow meter and pressure gauge on bed outlet pipe (3) control amount of oxygen, make in sludge dissolved oxygen concentration be maintained at 0.1mg/L ~
1mg/L；Waste water after treatment, is discharged by (3) overflow of Sludge Bed outlet pipe, obtains qualified water outlet.
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| CN201910605521.2A CN110342634A (en) | 2019-07-05 | 2019-07-05 | The micro- oxygen sludge bed process of membrane aeration biomembrane and its wastewater treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113003864A (en) * | 2021-02-26 | 2021-06-22 | 北京首禾环保科技有限公司 | Improved sewage treatment device and method by nitrogen and phosphorus removal biomembrane method |
| CN114162968A (en) * | 2021-11-17 | 2022-03-11 | 西安理工大学 | Micro-aerobic fluidized bed biofilm device and method for hydrolytic acidification of printing and dyeing wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113003864A (en) * | 2021-02-26 | 2021-06-22 | 北京首禾环保科技有限公司 | Improved sewage treatment device and method by nitrogen and phosphorus removal biomembrane method |
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Application publication date: 20191018 |