CN105152310B - In-situ excitation method of biological aerated filter aged biological film - Google Patents
In-situ excitation method of biological aerated filter aged biological film Download PDFInfo
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- CN105152310B CN105152310B CN201510609240.6A CN201510609240A CN105152310B CN 105152310 B CN105152310 B CN 105152310B CN 201510609240 A CN201510609240 A CN 201510609240A CN 105152310 B CN105152310 B CN 105152310B
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000005284 excitation Effects 0.000 title abstract 4
- 230000004913 activation Effects 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000032683 aging Effects 0.000 claims description 36
- 239000003480 eluent Substances 0.000 claims description 28
- 238000011001 backwashing Methods 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- FCBUKWWQSZQDDI-UHFFFAOYSA-N rhamnolipid Chemical compound CCCCCCCC(CC(O)=O)OC(=O)CC(CCCCCCC)OC1OC(C)C(O)C(O)C1OC1C(O)C(O)C(O)C(C)O1 FCBUKWWQSZQDDI-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims 1
- 229930182470 glycoside Natural products 0.000 claims 1
- 150000002338 glycosides Chemical class 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 10
- 239000004094 surface-active agent Substances 0.000 abstract description 8
- 239000006185 dispersion Substances 0.000 abstract description 7
- 239000010865 sewage Substances 0.000 abstract description 6
- 238000005063 solubilization Methods 0.000 abstract description 3
- 230000007928 solubilization Effects 0.000 abstract description 3
- 238000011010 flushing procedure Methods 0.000 abstract 8
- 238000005086 pumping Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 22
- 239000000945 filler Substances 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 7
- 238000006731 degradation reaction Methods 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 244000005700 microbiome Species 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000005273 aeration Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 235000011152 sodium sulphate Nutrition 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 150000002191 fatty alcohols Chemical class 0.000 description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
- 230000002779 inactivation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 239000003876 biosurfactant Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000002921 fermentation waste Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses an in-situ excitation method of a biological aerated filter aged biological film and belongs to the technical field of biofilm process sewage treatment. The method comprises the following steps: 1, stopping running of a biological aerated filter, opening a back-flushing air-inlet valve, starting a back-flushing draught fan, and conducting air back flushing; 2, preparing eluant I, starting a back-flushing water pump, and conducting eluant-air united back flushing; 3, powering off the back-flushing draught fan, closing the back-flushing air-inlet valve, preparing eluant II, and conducting rinsing; 4, pumping in clear water, conducting water rinsing, and completing in-situ excitation. According to the in-situ excitation method of the biological aerated filter aged biological film, solubilization and dispersion of the aged biological film are achieved through surfactant which is easy to biodegrade, the back flushing efficiency is improved, the difficult problem of in-situ updating and activation of a biological aerated filter aged biological film is effectively solved, the operation is simple and convenient, and the environment-friendliness is achieved.
Description
Technical field
The present invention relates to biomembrance process technical field of sewage, more particularly, it relates to a kind of BAF is old
Change biomembranous in-situ activation method.
Background technology
BAF is one kind of biomembrance process, with particulate filler in filter tank (such as haydite, zeolite, quartz sand, expansion
Alumino-silicate etc.) it is carrier, aeration is carried out inside filter tank, make filter material surface grow a large amount of biomembranes.When sewage is flowed through,
Appended biofilm microorganisms carry out absorption degradation or metabolic conversion to pollutant on filtrate, and cooperate with the Physical entrapment of filtrate to act on
And aerobic, anaerobic environment in filter tank, realize along water (flow) direction food chain classification predation and to dirty organic pollutants, nitrogen and
Remove while phosphorus, obtain in fields such as advanced treatment of wastewater, slightly-polluted raw water process, organic wastewater with difficult degradation thereby process and extensively should
With.
When BAF runs, As time goes on, there is aging, sewage treating efficiency in filter material surface biomembrane
Reduce, also result in filtering layer blocking, threaten system operation, need to clear up in time.It is general to remove filtrate table by the way of backwash
The aging biomembrane in face, but the aging biomembrane of conventional backwash removing filter material surface is applied, its frequency is higher, such as city is given birth to
Sewage living, general operation 24-48 hours are backwashed once, are made troubles to operational management, and development is efficiently and easily to operate
Demoulding activation method in situ, it appears very necessary.
Additionally, acid, alkali and oxidant are used as remover used in traditional handicraft, although cost is relatively low, effect is preferable, but its
Contaminant degradation related microorganisms in biomembrane can be produced inactivation, or even produce dissolving to filler in filter tank and be made by non-selectivity
With using less in Practical Project.Ferment treatment can optionally degradation characteristic composition (protein, polysaccharide etc.), the aging life of promotion
Thing film is peeled off, but it is compared with easy in inactivation and relatively costly by water quality impact (temperature, pH, toxicant etc.).
Jing is retrieved, Chinese Patent Application No. 201310404605.2, and the applying date is September in 2013 3, invention and created name
For：A kind of novel biological filter medium cleaning；This application case adopts surfactant sodium sulfate of polyethenoxy ether of fatty alcohol
With reagent oxalic acid as remover filter material for biological filter cleaning program, its technical process is：By the 8- of the volume of pool inner water
12% amount adds surfactant sodium sulfate of polyethenoxy ether of fatty alcohol and reagent oxalic acid, and filtrate in biofilter is carried out clearly
Wash, being passed through air carries out aeration agitation 20-40 minute, 18-30 hours are soaked after stopping the supple of gas or steam.Carry out atm number backwash aeration 1-3 little
When, stop aeration static 20-40 minutes, rapid pollution discharging 3-5 minutes, carrying out combined water and air backwash 1-3 hours, stop air purge,
Clear water backwash 20-40 minutes.Sewage in net pond is put, combined water and air backwash 1-3 hours, clear water backwash 20- are carried out again
40 minutes, until the content of surfactant sodium sulfate of polyethenoxy ether of fatty alcohol is less than 5mg/L in water.Above-mentioned surfactant
Can effective solubilization biomembrane, promote it from the stripping on filler surface, but its biological degradability is poor, easily remains in and produce in filter tank two
Secondary pollution；To avoid this situation from occurring, the program limits remaining surface by long-time combined water and air backwash and clear water backwash
Active agent content is less than 5mg/L, and power consumption is larger, relatively costly, and wants AEO in dynamic detection water outlet
The content of sodium sulphate, it is relatively complicated.
The content of the invention
1. the invention technical problem to be solved
It is of the invention that for BAF, routinely the aging biomembrane of backwash removing filter material surface is less efficient, run pipe
The present situation of reason inconvenience, and the secondary pollution that brought using chemical surfactant and cost are the problems such as raise, there is provided it is a kind of
The aging biomembranous in-situ activation method of BAF, the present invention is realized to aging life using new bio surfactant
The solubilising dispersion of thing film；For filter material surface activating agent residue problem after process, using safely and effectively type of elution, remaining trace
Amount surfactant can be biodegradable in filter tank, less to system disturbance.Meanwhile, the present invention can improve backwash efficiency, shorten
Aging biomembrane updates the time of activation, easy to operate, environmental friendliness, with wide application prospect.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of aging biomembranous in-situ activation method of BAF of the present invention, its step is：
Step one, BAF are out of service, open backwash air intake valve, start backwash blower fan, carry out sky
Gas is backwashed；
Step 2, preparation eluent I, start backwash pump, carry out eluent-air joint backwash；
Step 3, closing backwash blower fan and backwash air intake valve, pump into eluent II, are rinsed；
Step 4, clear water is pumped into, enter water-filling rinsing, complete in-situ activation.
Further improve as the present invention, air purge intensity is 10-15L/m in step one2S, the time is 3-5min, with
Filter material layer is loosened, filter material layer is expanded.
Further improve as the present invention, the eluent I in step 2 is mass percent concentration 0.1%-1.0%
Rhamnolipid or APG solution in one kind, the back washing strength of eluent I be 4-6L/m2S, the time is 5-10min, with
The aging biomembrane of solubilising dispersion simultaneously takes it out.
Further improve as the present invention, the eluent II in step 3 is the ethanol solution of volume fraction 30%,
The back washing strength of eluent II is 3-5L/m2S, the time is 5-10min, and back washing strength is not higher than, washing time is not less than
Eluent I, it is therefore an objective to elute the eluent I of filter material surface residual.Jing after this step process, filter material surface residue trace surface is lived
Property agent can produce certain COD (COD), after 1.5-2.5 days can in filter tank complete biodegradable, to system disturbance
It is less.
Further improve as the present invention, backwash washing intensity is 4-6L/m in step 42S, the time is 3-
5min, it is therefore an objective to clean eluent II, and further rinse the aging biomembrane of filter material surface and suspension.
3. beneficial effect
The technical scheme provided using the present invention, compared with existing known technology, with following remarkable result：
(1) a kind of aging biomembranous in-situ activation method of BAF of the invention, using biodegradable, ring
Border friendly biosurfactant, biomembrane is promoted from filler table by solubilization of the reinforcing to microorganism extracellular polymeric
Face is peeled off, and the loss of contaminant degradation related microorganisms in biomembrane is mitigated to greatest extent；And action time is shorter, backwash effect
Rate is higher；
(2) a kind of aging biomembranous in-situ activation method of BAF of the invention, easily biological-degradable surface is lived
Property agent application avoid secondary pollution, processing procedure micro- life related to contaminant degradation in biomembrane is alleviated to greatest extent
The impact of thing activity, shortens the time that biomembrane updates activation；Safety is carried out to the activating agent of filter material surface residual after process
Wash-out, remaining trace amount of surfactant can be biodegradable in filter tank, less to system disturbance；
(3) a kind of aging biomembranous in-situ activation method of BAF of the invention, be based on original backwash
System and its method for operation, reduce the cost of technological transformation, and in situ renewal of the aging biomembrane of effectively solving BAF is lived
Change a difficult problem, easy to operate, environmental friendliness extends the normal continuous operating time in filter tank, reduces operating cost.
Specific embodiment
To further appreciate that present disclosure, with reference to embodiment, the invention will be further described.
Embodiment 1
A kind of aging biomembranous in-situ activation method of BAF of the present embodiment, carries out processing urban life dirt
The aging biomembranous in-situ activation of water BAF.Filler is quartz sand in filter tank.Influent quality is：COD 330-
420mg/L, BOD5130-200mg/L, SS 210-290mg/L, NH3- N 20-40mg/L, TN 55-80mg/L, TP 3.2-
4.6mg/L, volumetric loading is 3kg BOD5/(m3·d).Aging biomembranous in-situ activation is concretely comprised the following steps：
Step one, BAF are out of service, open backwash air intake valve, start backwash blower fan, carry out sky
Gas is backwashed, and air purge intensity is 10L/m2S, the time is 4min, expands filter material layer.
Step 2, preparation eluent I：Use quality percent concentration is 0.1% rhamnolipid solution, starts backwash
Water pump, carries out eluent-air joint backwash, and eluent back washing strength is 5L/m2S, the time is 5min, with solubilising dispersion
Aging biomembrane simultaneously takes it out.
Step 3, closing backwash blower fan and backwash air intake valve, dose volume fraction is that 30% ethanol solution (is washed
De- liquid II), rinsed, back washing strength is 3L/m2S, the time is 8min, fully to elute the eluent of filter material surface residual
Ⅰ。
Step 4, backwashing water water pump suction pipe is switched to into clear water reserviors, enter water-filling rinsing, backwash washing intensity is 5L/
m2S, the time is 3min, it is therefore an objective to cleans eluent II, and further rinses the aging biomembrane of filter material surface and suspension, completes
In-situ activation.After normal water inlet 1 day, the clearance of Wastewater Pollutant with activate before be closer to, show that biomembrane is tentatively completed
Growth is updated, and after activation, the more conventional backwash of the normal continuous operating time in filter tank extends 3 times (4.5 days or so).
Inventor points out that filler surface biological film is mainly made up of microorganism and its extracellular polymeric in filter tank, with many
Mutually heterogeneous the characteristics of, and typical spatial distribution characteristic is presented.For aging biomembranous activation, biomembrane should be strengthened from filling out
Material surface stripping, while to greatest extent mitigate biomembrane in contaminant degradation related microorganisms loss or inactivation, with shorten
The follow-up time for updating activation.Based on this, the present embodiment is taken off based on original backwashing system and its method for operation using preferred
Film, realizes, to aging biomembranous solubilising dispersion, improve backwash efficiency, reduces the cost of technological transformation, defines
The aging biomembrane in-situ activation scheme of economical and efficient, convenient management.
Embodiment 2
A kind of aging biomembranous in-situ activation method of BAF of the present embodiment, carries out fermentation waste water depth
The aging biomembranous in-situ activation of reason BAF.Filler is haydite in filter tank.Influent quality is：COD 360-510mg/
L, BOD5120-210mg/L, SS 220-285mg/L, NH3- N 25-40mg/L, TN 60-85mg/L, TP 5.4-8.5mg/L,
Volumetric loading is 6kg BOD5/(m3·d).Aging biomembranous in-situ activation is concretely comprised the following steps：
Step one, BAF are out of service, open backwash air intake valve, start backwash blower fan, carry out sky
Gas is backwashed, and air purge intensity is 15L/m2S, the time is 5min, expands filter material layer.
Step 2, preparation eluent I：The APG solution of mass concentration 0.5%, starts backwash pump, is washed
De- liquid-air joint backwash, eluent back washing strength is 4L/m2S, the time is 8min, with the aging biomembrane of solubilising dispersion
And take it out.
Step 3, closing backwash blower fan and backwash air intake valve, the ethanol solution (wash-out of dose volume fraction 30%
Liquid II), rinsed, back washing strength is 5L/m2S, the time is 10min, fully to elute the eluent of filter material surface residual
Ⅰ。
Step 4, backwashing water water pump suction pipe is switched to into clear water reserviors, enter water-filling rinsing, backwash washing intensity is 4L/
m2S, the time is 4min, it is therefore an objective to cleans eluent II, and further rinses the aging biomembrane of filter material surface and suspension, completes
In-situ activation.After normal water inlet 2 days, the clearance of Wastewater Pollutant with activate before be closer to, show that biomembrane is tentatively completed
Growth is updated, and after activation, the more conventional backwash of the normal continuous operating time in filter tank extends 2.3 times (3.5 days or so).
Embodiment 3
A kind of aging biomembranous in-situ activation method of BAF of the present embodiment, carries out livestock breeding wastewater depth
Degree processes the aging biomembranous in-situ activation of BAF.Filler is zeolite in filter tank.Influent quality is：COD 460-
620mg/L, BOD5135-186mg/L, SS 270-315mg/L, NH3- N 45-65mg/L, TN 83-116mg/L, TP 8.2-
14.3mg/L, volumetric loading is 6kg BOD5/(m3·d).Aging biomembranous in-situ activation is concretely comprised the following steps：
Step one, BAF are out of service, open backwash air intake valve, start backwash blower fan, carry out sky
Gas is backwashed, and air purge intensity is 14L/m2S, the time is 3min, expands filter material layer.
Step 2, preparation eluent I：The rhamnolipid solution of mass concentration 1%, starts backwash pump, is eluted
Liquid-air joint backwash, eluent back washing strength is 6L/m2S, the time is 10min, with the aging biomembrane of solubilising dispersion simultaneously
Take it out.
Step 3, closing backwash blower fan and backwash air intake valve, the ethanol solution (wash-out of dose volume fraction 30%
Liquid II), rinsed, back washing strength is 4L/m2S, the time is 5min, fully to elute the eluent I of filter material surface residual.
Step 4, backwashing water water pump suction pipe is switched to into clear water reserviors, enter water-filling rinsing, backwash washing intensity is 6L/
m2S, the time is 5min, it is therefore an objective to cleans eluent II, and further rinses the aging biomembrane of filter material surface and suspension, completes
In-situ activation.After normal water inlet 2.5 days, the clearance of Wastewater Pollutant with activate before be closer to, show that biomembrane is tentatively complete
Grow into updating, and after activation, the more conventional backwash of the normal continuous operating time in filter tank extends 4 times (5 days or so).
What deserves to be explained is, to those skilled in the art, under present inventive concept and specific embodiment enlightenment, energy
Enough some deformations directly derived from the disclosure of invention and general knowledge or associate, it will be recognized by those of ordinary skill in the art that
May also be employed commonly using the replacement of known technology in additive method, or prior art, and the mutually different combination between feature etc.
Unsubstantiality change, equally can be employed, can realize the present invention description function and effect, no longer one by one citing launch
Describe in detail, belong to the scope of the present invention.
Claims (3)
1. a kind of aging biomembranous in-situ activation method of BAF, its step is：
Step one, BAF are out of service, open backwash air intake valve, start backwash blower fan, carry out air anti-
Rinse；
Step 2, preparation eluent I, eluent I is that mass percent concentration is sugared for the rhamnolipid or alkyl of 0.1%-1.0%
One kind in glycosides solution, starts backwash pump, carries out eluent-air joint backwash, and the back washing strength of eluent I is 4-
6L/m2S, the time is 5-10min；
Step 3, closing backwash blower fan and backwash air intake valve, pump into eluent II, and eluent II is for volume fraction
30% ethanol solution, is rinsed, and the back washing strength of eluent II is 3-5L/m2S, the time is 5-10min, and is backwashed strong
Degree is not higher than, washing time is not less than eluent I；
Step 4, clear water is pumped into, enter water-filling rinsing, complete in-situ activation.
2. the aging biomembranous in-situ activation method of a kind of BAF according to claim 1, it is characterised in that：
Air purge intensity is 10-15L/m in step one2S, the time is 3-5min.
3. the aging biomembranous in-situ activation method of a kind of BAF according to claim 2, it is characterised in that：
Backwash washing intensity is 4-6L/m in step 42S, the time is 3-5min.
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| CN113707353B (en) * | 2020-12-25 | 2023-08-29 | 核工业北京化工冶金研究院 | Method for activating and reusing sponge iron filter material |
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| CN105600921B (en) * | 2015-12-18 | 2018-10-30 | 南京大学 | A kind of in-situ activation method of filler aging biomembrane |
| CN105753142B (en) * | 2016-04-18 | 2019-03-26 | 南京大学 | A kind of the in-situ activation agent and in-situ activation method of aerating biological filter pool filler biomembrane |
| CN106554077B (en) * | 2016-10-12 | 2017-11-07 | 南京大学 | It is a kind of to alleviate device and its operation method that denitrification deep-bed filter top layer is blocked |
| CN107515287B (en) * | 2017-09-19 | 2021-10-26 | 南京大学 | Method for measuring biodegradable soluble organic nitrogen of sewage based on dynamic culture |
| CN109133379B (en) * | 2018-09-30 | 2021-08-24 | 中冶华天工程技术有限公司 | Method for promoting activation and regeneration of sewage treatment biological membrane |
| CN111099742A (en) * | 2018-10-26 | 2020-05-05 | 中国石油化工股份有限公司 | Composition for improving resistance of denitrification system and denitrification method thereof |
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