CN107032556A - A kind of modified form ABFT techniques - Google Patents
A kind of modified form ABFT techniques Download PDFInfo
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- CN107032556A CN107032556A CN201611124308.2A CN201611124308A CN107032556A CN 107032556 A CN107032556 A CN 107032556A CN 201611124308 A CN201611124308 A CN 201611124308A CN 107032556 A CN107032556 A CN 107032556A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of modified form ABFT techniques, including front end physical treatment technology：Grid canal, horizontal flow type grit chamber, regulating reservoir；Middle biochemical treatment main process：Anaerobic technique section, anoxic process section, aerobic process section, depositing technology section, sand filtration process section；Follow-up disinfection of effluent handling process section；Biochemical treatment main process is built by integration apparatus, and each process section is separated by dividing plate, effluent weir, mozzle connection, anaerobic technique section water inlet, sand filtration process section water outlet.The present invention is based on ABFT techniques, by MBBR filler fluidized states, each section of reflux technique of UCT, A2/O main process section is combined and improved, rear end precipitation water outlet is changed to precipitate sand filtration water outlet, traditional handicraft sludge bulking, filler loss, the higher intrinsic shortcomings of water outlet SS are solved, effluent quality is further enhanced.
Description
Technical field
The invention belongs to sanitary sewage disposal field, and in particular to a kind of modified form ABFT techniques.
Background technology
The economy of China has obtained quick development in recent years, but certain dirt is at the same time also caused to environment
Dye, in order to preserve the ecological environment, China actively advocate energy-saving and emission-reduction, and give in the processing of pollutant enough weights
Depending on.Under the water resource increasingly situation in short supply in the whole world, the processing for sewage is just particularly important.At present, China's fresh water
Resource extremely shortage, freshwater resources amount is only the 1/3 of world average per capita.In national more than 660 city, there is more than 400
Urban water shortage, wherein 108 are city of severe water shortage.
Sanitary sewage conventional processes have oxidation ditch, A2/O, CASS etc..Process above can for town domestic sewage
Focus on, but in rural area, sewage more disperses, collect difficult, floor space is big, physical features addressing, build more difficult, it is another
Aspect is for the intrinsic shortcoming of traditional handicraft, and Nitrogen/Phosphorus Removal is undesirable, more difficult controls of water outlet SS etc., in continuous research improvement
During there are the novel process such as ABFT, MBBR, UCT, it is further to wastewater treatment efficiency improve.
ABFT reactors are actually double bioreactors of comprehensive traditional activated sludge process and biomembrance process advantage, are passed through
Added into ABFT reactors account for aeration tank dischargeable capacity 40% -50% high-effective microorganism carrier, special efficacy microorganism is a large amount of
Attachment and be fixed thereon, in ABFT reactors, by cultivating different special efficacy strains, improve the degraded effect of target contaminant
Really, the biomass that surfaces of carrier materials is grown usually 18-25g/L, up to 40g/L, are the 1.5 of common biomembrance process
~2.0 times, be 10~20 times of traditional activated sludge process, and microorganism is firmly combined with carrier, difficult for drop-off, is difficult stream
Lose, the biomass of high capacity ensure that ABFT reactors remove the efficient of pollutant and stably；Carrier inside is deposited in running
In good anaerobic zone microenvironment, it is set to be internally formed countless miniature denitrification reactors, so cause same
Occur ammoxidation, nitrification and denitrification synergy, the strong efficient removal that ensure that ammonia nitrogen among reactor simultaneously；Pass through
The operational factor of ABFT reactors at different levels is controlled, aerobic and anaerobic environment the presence of macroscopic view is caused, be conducive to polyP bacteria releases phosphorus
With excessively take the photograph phosphorus, it is ensured that the removal of phosphorus.
The present invention is based on ABFT techniques, by MBBR filler fluidized states, each section of reflux technique of UCT, A2/O main process section
With reference to and improved, rear end precipitation water outlet be changed to precipitate sand filtration water outlet, solve traditional handicraft sludge bulking, filler be lost in,
The higher intrinsic shortcomings of water outlet SS, effluent quality is further enhanced.
The content of the invention
The technical problems to be solved by the invention are by MBBR filler fluidized states, each section of reflux technique of UCT, A2/O main bodys
Process section combination provides a kind of efficient integrated sewage handling process.
Technical scheme：1st, pretreatment section, grid canal-horizontal flow type grit chamber-regulating reservoir, 2, efficiently integrated place
Section is managed, anaerobic technique section-anoxic process section-aerobic process section-depositing technology section-sand filtration process section water outlet is specific as follows：
1st, grid canal installs thickness grid：After sanitary sewage is intercepted scum silica frost larger in water inlet by thickness grid filtration
Into setting pot；
2nd, horizontal flow type grit chamber：Based on Gravity Separation, by larger inorganic particle in sewage (particle diameter is more than 0.2mm) point
From with facilities such as protective conduit, valves from wearing and tearing and blocking；
3rd, regulating reservoir：Residence time is set to 4h, carries out runoff investigation, and hair accumulator is installed in front end, to hair and compared with
Small particle is separated；Elevator pump is installed in rear end, and sanitary sewage is pumped into anaerobic zone；
4th, anaerobic technique section：Residence time is set to 2h, and the sanitary sewage in regulating reservoir is pumped into anaerobic technique section, top
Provided with water-distributing device, bottom, which is provided with above water distributor, water distributor, installs suspended type elastic condiment, and water-distributing device is pulse water distribution
Device, installs suspended type elastic condiment, water outlet is by top downflow weir mozzle even into anoxic section above water distributor；
5th, anoxic process section：Residence time is set to place floating filler in 3h, process section, is the growth of anoxic microorganism
There is provided place, filler uses ring packing, bottom sets aeration oxygenator, oxygenate apparatus top steel wire by filler every
Open, prevent the sludge that filler is fallen into dead angle, anoxic process section from carrying out sludge reflux, sludge reflux to anaerobism work by impeller
Skill section, return sludge ratio is 1:1, water outlet, even into anoxic section, is sealed at overflow by top downflow weir mozzle with steel wire,
Filler is prevented to be lost in；
6th, aerobic process section：Residence time is set to place floating filler in 3h, process section, is growth of aerobic microorganisms
Place is provided, filler uses ring packing, and aerobic zone bottom sets oxygenate apparatus, and gas-water ratio is 12:1 oxygenate apparatus top steel
Silk screen separates filler, prevents filler from falling into dead angle, and water outlet is entered at precipitating phase, overflow by top downflow weir mozzle uses steel wire
Net is sealed, and prevents filler to be lost in；
7th, depositing technology section：Sedimentation time is set to 2.5h, and sewage enters depositing technology section through mozzle, and it is just heavy to carry out,
Supernatant enters sand filtration section by top downflow weir mozzle；Excess sludge in the bucket of bottom is pumped into front end by sludge pump,
Most of sludge is pumped into front end anoxic section, and a small amount of sludge is pumped into the regulating reservoir of front end, periodically cleared up；
8th, sand filtration process section：Residence time is set to 40min, and supernatant enters sand filtration process section through downflow weir mozzle,
Current through filter layer water outlet, further remove SS from top to bottom；Back washing device is provided with water outlet, backwash liquor passes through top downflow weir
It is discharged into regulating reservoir；Sand filtration lower floor bed course uses cobblestone, and upper strata uses quartz sand；
9th, water outlet：Sanitary sewage after being handled in sand filtration process section drains into chlorination equipment by gravity flow, and carry out disinfection place
Reason, sterilization uses chlorine dioxide adding device, and the residence time is 20min；Water outlet COD clearances reach 95%, ammonia nitrogen after sterilization
Clearance reaches that 94%, TN clearances reach 81%；
Preferably, before step 1, processing before sanitary sewage must be carried out in septic tank.
Preferably, in step 5, sludge reflux passage time Control impeller run time.
Preferably, in step 7, sludge reflux by the valve regulated sludge reflux that is installed on mud return line when
Spoil disposal.
The invention has the advantages that：
1st, front end anaerobism section sludge stirring, pulse water distribution is changed to by traditional impeller, and unregulated power consumption, energy consumption subtracts significantly
Few, water distribution agitation is uniform.
2nd, backflow uses plug-flow form between anaerobism section and anoxic section, can not only play plug-flow effect, and capacity of returns is big, can
Run time is saved, so as to reduce energy resource consumption.
3rd, suspended type elastic filler, the biological appendix area of increase are provided with anaerobism section, so that increase biomass, elastic filler
On biomass be covered with whole anaerobism section, improve anaerobism section biochemical treatment ability.
4th, ring packing is provided with anoxic section and aerobic section, its density ratio is 0.9-0.95, is slightly less than water, microorganism appendix
After above, the density of its density and water almost, can be suspended in water；Filler is stirred in pond body with micro-pore aeration, is existed
A certain degree of air dissection, air is sheared, and makes the contact between solid-liquid-gas three-phase more abundant, while annular
When biomass appendix on filler is excessive, the shear action of air can make it come off to regrow；On the other hand, each annular
Filler is all a small reactor, and microorganism is in appendix growth period, and each ring packing can be formed from inside to outside to be detested
Oxygen-anoxic-aerobic microresponse device, so as to substantially increase sewage treating efficiency.
5th, increase precipitation-sand filtration replaces traditional precipitation water outlet, and water outlet passes through sand filtration by precipitation, further reduces water again
Middle SS, and water outlet will not be influenceed by the sludge bulking in sedimentation basin.
6th, whole biochemical system water outlet adds liquid layer liquid in the form water outlet of mozzle, maintenance uniformly to overflow using effluent weir
Go out, mozzle, which is uniformly distributed, slows down flow rate of liquid, liquid is uniformly flowed out, it is ensured that each reaction zone microorganism contact is uniform, carries
High reaction efficiency.
Brief description of the drawings
Fig. 1 is front end pretreating process flow simple diagram, wherein：1st, grid canal；2nd, thickness grid；3rd, horizontal-flow grit chamber；
4th, hair accumulator；5th, regulating reservoir；6th, elevator pump.
Fig. 2 is main process flow simple diagram, wherein：7th, Impulsive tank；8th, anaerobism section；9th, anoxic section；10th, aerobic section；11、
Effluent weir；12nd, sand filtration area；13rd, settling zone；14th, suspended type elastic filler；15th, mozzle；16th, porous annular filler；17th, cloth
Water pipe；18th, impeller；19th, microporous aeration device；20th, steel wire is intercepted；21st, sludge reflux pump；22nd, backflow and discharge pipeline.
Fig. 3 is that main process flow overlooks simple diagram, wherein：8th, anaerobism section；9th, anoxic section；10th, aerobic section；12nd, sand filtration
Area；13rd, settling zone；18th, impeller；21st, sludge reflux pump；22nd, backflow and discharge pipeline.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
A kind of modified form ABFT techniques, as shown in Figure 1, Figure 2, Figure 3 shows, tell that process section includes grid canal, thickness grid is put down
Stream setting pot, hair accumulator, regulating reservoir, elevator pump, Impulsive tank, anaerobism section, anoxic section, aerobic section, effluent weir, sand filtration area,
Settling zone, suspended type elastic filler, mozzle, porous annular filler, water distributor, impeller, microporous aeration device intercepts steel wire
Net, sludge reflux pump, backflow and discharge pipeline.Concrete facts step is as follows：
Step 1: grid canal installs thickness grid：Sanitary sewage is by thickness grid filtration by scum silica frost larger in water inlet
Enter setting pot after interception；
Step 2: horizontal flow type grit chamber：Based on Gravity Separation, by larger inorganic particle in sewage, (particle diameter is more than
0.2mm) separate, with facilities such as protective conduit, valves from wearing and tearing and blocking；
Step 3: regulating reservoir：Residence time is set to 4h, carries out runoff investigation, hair accumulator is installed in front end, to hair
Separated with smaller particle thing；Elevator pump is installed in rear end, and sanitary sewage is pumped into anaerobic zone；
Step 4: anaerobic technique section：Residence time is set to 2h, and the sanitary sewage in regulating reservoir is pumped into anaerobic technique
Section, top is provided with water-distributing device, and bottom, which is provided with above water distributor, water distributor, installs suspended type elastic condiment, and water-distributing device is arteries and veins
Water-locator is rushed, suspended type elastic condiment is installed above water distributor, water outlet is by top downflow weir mozzle even into anoxic section；
Step 5: anoxic process section：Residence time is set to place floating filler in 3h, process section, is the micro- life of anoxic
Thing growth provides place, and filler uses ring packing, and bottom sets aeration oxygenator, and oxygenate apparatus top steel wire will be filled out
Material is separated, and prevents that filler from falling into dead angle, and the sludge in anoxic process section carries out sludge reflux by impeller, and sludge reflux is to detesting
Oxygen process section, return sludge ratio is 1:1, water outlet, even into anoxic section, uses steel wire at overflow by top downflow weir mozzle
Seal, prevent filler to be lost in；
Step 6: aerobic process section：Residence time is set to place floating filler in 3h, process section, is aerobic micro- life
Thing growth provides place, and filler uses ring packing, and aerobic zone bottom sets oxygenate apparatus, and gas-water ratio is 12:On 1 oxygenate apparatus
Side is separated filler with steel wire, prevents filler from falling into dead angle, water outlet is entered at precipitating phase, overflow by top downflow weir mozzle
Sealed with steel wire, prevent filler to be lost in；
Step 7: depositing technology section：Sedimentation time is set to 2.5h, and sewage enters depositing technology section through mozzle, carried out
Just heavy, supernatant enters sand filtration section by top downflow weir mozzle；Excess sludge in the bucket of bottom is pumped into by sludge pump
Front end, most of sludge is pumped into front end anoxic section, and a small amount of sludge is pumped into the regulating reservoir of front end, periodically cleared up；
Step 8: sand filtration process section：Residence time is set to 40min, and supernatant enters sand filtration work through downflow weir mozzle
Skill section, current through filter layer water outlet, further remove SS from top to bottom；Back washing device is provided with water outlet, backwash liquor passes through top
Downflow weir is discharged into regulating reservoir；Sand filtration lower floor bed course uses cobblestone, and upper strata uses quartz sand；
Step 9: water outlet：Sanitary sewage after being handled in sand filtration process section drains into chlorination equipment by gravity flow, is disappeared
Poison processing, sterilization uses chlorine dioxide adding device, and the residence time is 20min；Water outlet COD clearances reach 95% after sterilization,
Ammonia nitrogen removal frank reaches that 94%, TN clearances reach 81%；
Before step one, processing before sanitary sewage must be carried out in septic tank.
In step 5, sludge reflux passage time Control impeller run time.
In step 7, sludge reflux passes through the valve regulated sludge reflux that is installed on mud return line when spoil disposal.
Embodiment
Certain sanitary sewage disposal point, treatment scale is 300m3COD is that 320.8mg/L, SS are 206.5mg/ in/d, raw water
L, ammonia nitrogen are that 28.5mg/L, TN are that 51.6mg/L, pH are 6~9.The maintenance anaerobic zone residence time is 2.0h, fluid bed anoxic zone
Residence time is 3h, and the fluid bed aerobic zone residence time is 6h, and the settling zone residence time is 3h, and the sand filtration area residence time is
30min, pH maintain 7.42, and temperature maintains 18.6 DEG C, and return sludge ratio is 1:1, the burst length of pulse water distributing device is
8min, disinfecting time is 20min.Water outlet reaches after processing《Urban wastewater treatment firm pollutant emission standard》(GB18918-
2002) one-level A is marked.
Result
Claims (9)
1. a kind of modified form ABFT techniques, including front end physical treatment technology：Grid canal, horizontal flow type grit chamber, regulating reservoir；
Middle biochemical treatment main process：Anaerobic technique section, anoxic process section, aerobic process section, depositing technology section, sand filtration process section；
Follow-up disinfection of effluent handling process section；Biochemical treatment main process is built by integration apparatus, and each process section is separated by dividing plate, is gone out
Mill weir, mozzle connection, anaerobic technique section water inlet, sand filtration process section water outlet.
2. telling process section according to claim 1, grid canal mainly lays grid, and sanitary sewage will be entered by thickness grid filtration
Enter setting pot after larger scum silica frost is intercepted in water.
3. telling process section according to claim 1, horizontal flow type grit chamber mainly removes inorganic particulate matter larger in sanitary sewage,
Its principle is mainly based on Gravity Separation, by larger inorganic particle in sewage (particle diameter is more than 0.2mm) separation, with protection pipe
The facilities such as road, valve are from wearing and tearing and blocking
4. telling process section according to claim 1, the main regulating pondage of regulating reservoir, the residence time calculated by 4 hours, and hair is installed in front end
Collector is sent out, hair and smaller particle thing are separated, elevator pump is installed in rear end, and sanitary sewage is pumped into anaerobic zone.
5. process section is told according to claim 1, it is characterised in that tell that ABFT techniques include：Water inlet is entered by water-distributing device
Anaerobic technique section carries out bottom water distribution, crosses mill weir through dividing plate upper end and collects, then flows into anoxic process section bottom, anoxic through mozzle
Process section sewage is crossed mill weir through dividing plate upper end and collected, then flows into aerobic process section bottom, aerobic process section sewage warp through mozzle
Mill weir collection is crossed in dividing plate upper end, then flows into depositing technology section bottom through mozzle, and water outlet is collected by top effluent weir and flows into sand filtration
Process section, finally by bottom water outlet.
6. technique is told according to claim 5, it is characterised in that water-distributing device is siphon pulse water distribution, is positioned over anaerobic technique
Duan Shangfang, bottom water distribution system are " rich " type water distributor.
7. telling technique according to claim 5, it is characterised in that it is 2h to tell the anaerobic technique section residence time, inside is installed outstanding
Hanging elastic filler, anoxic process section, aerobic process section residence time are respectively 3h, 3h, and inside is placed with floated fluidisation and filled out
Material；Told anoxic process section, aerobic process section bottom are equipped with microporous aeration device, increase the utilization rate of oxygen.
8. technique is told according to claim 5, it is characterised in that tell that anoxic process section bottom is provided with plug flow device, by anoxic
Section sludge reflux is a part of to anaerobism section；Sand filtration process section bottom is provided with reflux, a part of sludge reflux to anoxic section, one
Partial sludge is drained.
9. technique is told according to claim 6-8, it is characterised in that anaerobism section pulse water distribution in technique is told, in order to stir dirt
Mud, increases contact area, and reaction is abundant, and suspended type elastic filler provides growth platform for anaerobe, increases microbial biomass,
Floated fluidisation ring packing in told anoxic process section, aerobic process section, its density is slightly less than water, under aeration condition, filled out
Material is in fluidized state, further increases the contact area with sewage, improves wastewater treatment efficiency.
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| CN201611124308.2A CN107032556A (en) | 2016-12-08 | 2016-12-08 | A kind of modified form ABFT techniques |
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| CN201611124308.2A CN107032556A (en) | 2016-12-08 | 2016-12-08 | A kind of modified form ABFT techniques |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052804A (en) * | 2018-07-16 | 2018-12-21 | 湖北开元化工科技股份有限公司 | A kind of ABFT technique |
| CN109502880A (en) * | 2018-10-12 | 2019-03-22 | 海南美润环境工程有限公司 | A kind of MBBR integrated sewage treating apparatus and method |
| CN111908715A (en) * | 2020-08-04 | 2020-11-10 | 安庆泽远化工有限公司 | High-efficient clean system of papermaking sewage |
| CN113105080A (en) * | 2021-05-20 | 2021-07-13 | 深圳顺天环保实业有限公司 | Reverse-push type efficient denitrification and aerobic MBR (membrane bioreactor) process for treating dispersive sewage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109502880A (en) * | 2018-10-12 | 2019-03-22 | 海南美润环境工程有限公司 | A kind of MBBR integrated sewage treating apparatus and method |
| CN111908715A (en) * | 2020-08-04 | 2020-11-10 | 安庆泽远化工有限公司 | High-efficient clean system of papermaking sewage |
| CN113105080A (en) * | 2021-05-20 | 2021-07-13 | 深圳顺天环保实业有限公司 | Reverse-push type efficient denitrification and aerobic MBR (membrane bioreactor) process for treating dispersive sewage |
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Application publication date: 20170811 |