CN105923744A - Water treatment method capable of regulating and controlling rapid start of nitrification effect of biological membrane - Google Patents
Water treatment method capable of regulating and controlling rapid start of nitrification effect of biological membrane Download PDFInfo
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- CN105923744A CN105923744A CN201610457844.8A CN201610457844A CN105923744A CN 105923744 A CN105923744 A CN 105923744A CN 201610457844 A CN201610457844 A CN 201610457844A CN 105923744 A CN105923744 A CN 105923744A
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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
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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
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
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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
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- 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
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention provides a water treatment method capable of regulating and controlling rapid start of nitrification effect of a biological membrane, belongs to the technical field of feed water treatment and relates to a method for regulating and controlling rapid start of nitrification effect of a biological membrane by use of N-acyl homoserine lactone (AHLs) signal molecules. The invention aims at providing a method for regulating and controlling rapid start of nitrification effect of a biological membrane by use of N-acyl homoserine lactone (AHLs) signal molecules. During an operation process of a bioreactor, the hydraulic retention time is 0.5-2.5h, the dissolved oxygen concentration is higher than 2mg/L, the operation temperature of the bioreactor is 5-30 DEG C, a fluidized bed light suspended filler is utilized as a feed water treatment filler, the initial concentration of exogenous AHLs at the start-up initial stage of the bioreactor is 0.1 mu mol/L-1.0 mu mol/L, the pollutant ammonia concentration of inlet water is less than or equal to 5mg/L, and the total organic carbon concentration is less than or equal to 10mg/L. According to the method, through quickening formation of a biological membrane, the start period of the reactor is shortened, growth of nitrobacteria is regulated and controlled, nitrobacteria is promoted to become dominant microflora, and thus transfer of nitrogen in water is promoted.
Description
Technical field
The invention pertains to water-treatment technology field, relate to the regulation and control of N-acyl homoserine lactones (AHLs) class signaling molecule
The method that biomembrane nitrification quickly starts.
Background technology
Biomembrance process processes target contaminant and has many significant advantages, and, biofacies big including biomass enriches, clearance
Height, reactor are stable, thus are used widely in Water purification.But, relative in target pollutant concentration
In the case of relatively low, filling surface biomembrane is difficult to be formed at short notice, and reactor Operating ettectiveness is affected.It addition,
In Water purification, the nitrobacteria generation cycle is long, limits the process of nitrification, is unfavorable for the transfer of nitrogen in water.Therefore, as
What realizes biomembrane is quickly formed, and the rapidly and efficiently operation of water processing reactor, especially nitrator be one urgently
Hot issue to be solved.
Quorum sensing (Quorum sensing QS) is after bacterial density reaches certain threshold value, produces release chemical signal and divides
Son, regulates and controls bacterium behavior, such as, regulate and control biomembranous forming process, and then regulation and control bacterium adapts to surrounding environment change.At present
Known 3 class signaling molecules, including N-acyl homoserine lactones (AHLs) the class signaling molecule of Gram-negative bacteria, leather orchid
The small peptide signaling molecule of family name's positive bacteria, and autoinducer-2 (AI-2) signaling molecule, and nitrobacteria is blue for leather
Family name's negative bacterium, its QS signaling molecule mostly is AHLs.Reactor start-up initial stage external source in system supplements appropriate AHLs,
The regulation and control biomembranous quick formation of carrier surface and the physiological behavior of nitrobacteria, promote that reactor efficiency, especially nitrification are made
Quick realization.Utilizing the regulating and controlling effect of intervention school-based, the quickly realization removing target contaminant for biomembrance process carries
Supply a kind of new thinking.
Summary of the invention
The invention aims to provide one to utilize the regulation and control of N-acyl homoserine lactones (AHLs) class signaling molecule raw
The method that thing film nitrification quickly starts, a kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification.
A kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification:
In the running of bioreactor, hydraulic detention time is 0.5-2.5h, and dissolved oxygen concentration is higher than 2mg/L, biological anti-
Answering device running temperature to be 5-30 DEG C, Water purification filler is fluid bed light suspended filler, at the beginning of wherein bioreactor starts
The initial concentration of phase external source AHLs is 0.1 μm ol/L-1.0 μm ol/L, and the dosing method of described external source AHLs is for directly to add
Entering in bioreactor or external source AHLs loads to carrier surface adds in bioreactor by carrier the most again, water inlet
Middle pollutant ammonia nitrogen concentration≤5mg/L, organic carbon concentration≤10mg/L；
Described external source AHLs is N-bytyry homoserine lactone (C4-HSL), N-caproyl homoserine lactone
(C6-HSL), N-caprylyl homoserine lactone (C8-HSL), N-decanoyl homoserine lactone (C10-HSL), N-ten
Dialkanoyl homoserine lactone (C12-HSL) and N-tetradecane acyl homoserine lactones (C14-HSL) in one or several
The combination planted.
Described fluid bed light suspended filler carrier is vinyon filler or polypropylene plastics filler.
Described dissolved oxygen concentration is ＞ 2mg/L.
The dosing method of described external source AHLs is that the method for operating being directly added in bioreactor is as follows:
External source AHLs is dissolved in Tris-HCl buffer solution, then mixed solution will be prepared adds in bioreactor,
Described Tris-HCl pH of cushioning fluid is 7.0.
The described method that external source AHLs loads to carrier surface is as follows:
Under conditions of 30-90 DEG C of water-bath, being dissolved in dichloromethane by PLA, dissolution time is 1-10h, then cools down
To 20-25 DEG C, adding external source AHLs, obtain mixed solution, external source AHLs dosage is at the beginning of for starting at bioreactor
The initial concentration of phase is 0.1 μm ol/L-1.0 μm ol/L, is immersed in mixed solution by fluid bed light suspended filler carrier,
And under conditions of ventilating, remove dichloromethane, external source AHLs is deposited on fluid bed light suspended filler carrier with PLA
Surface.
In described mixed solution, the mass concentration of PLA is 0.01-0.1g/ml.
The method have the advantages that
The inventive method shortens the startup cycle of reactor by accelerating biomembranous formation, regulates and controls the growth of nitrobacteria,
Promote that it becomes dominant microflora, and then promote the transfer of nitrogen in water.
The inventive method adds function bacterium and composite bacteria agent without artificial enrichment strengthening or external source, and operating process is easy, to nitrous
Change bacterium and the growth of nitrobacteria and nitrification function all plays facilitation.This method is at normal temperature, the startup optimization of low temperature
Under the conditions of all play good facilitation.N-acyl homoserine lactones (AHLs) is utilized to regulate and control on reactor carrier
Biomembranous quick formation, by the intervention school-based of microbial population on regulation and control biomembrane, promotes that nitrobacteria becomes excellent
Gesture flora, improves the removal usefulness of ammonia nitrogen in reactor, shortens the startup cycle of nitrification.Can by strain idenfication result
Knowing, the experimental group that with the addition of AHLs adds Proteobacteria (Proteobacteria) and nitrification spirillum door (Nitrospirae)
Percentage, the percentage of experimental group Nitraspira (Nitrospira) is high compared with control group by 30.7%, and for nitrosation list
Born of the same parents Pseudomonas (Nitrosomonas), the percentage of experimental group is then 2.2 times of control group.Research shows, different types of AHLs
All bacterial population being created regulating and controlling effect, simultaneously facilitating nitrobacteria becomes dominant microflora, has reached regulation and control biomembrane quick
The purpose formed.
Accompanying drawing explanation
Fig. 1 is experiment one and contrast experiment's figure that affects on ammonia nitrogen removal frank, and in figure, △ adds external source N-in representing experiment one
Caproyl homoserine lactone (C6-HSL) figure that affects on ammonia nitrogen removal frank, ■ represents and does not adds external source N-in contrast experiment
Caproyl homoserine lactone (C6-HSL) ammonia nitrogen removal frank affected figure；
Fig. 2 is experiment one and contrast experiment's figure that affects on nitrobacteria, in figureRepresent in experiment one and add external source N-hexanoyl
Base homoserine lactone (C6-HSL) nitrobacteria affected figure,Represent in contrast experiment and do not add external source N-caproyl
Homoserine lactone (C6-HSL) nitrobacteria affected figure.
Detailed description of the invention
Technical solution of the present invention is not limited to act detailed description of the invention set forth below, and also include between each detailed description of the invention is any
Combination.
Detailed description of the invention one: in present embodiment a kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification:
In the running of bioreactor, hydraulic detention time is 0.5-2.5h, and dissolved oxygen concentration is higher than 2mg/L, biological anti-
Answering device running temperature to be 5-30 DEG C, Water purification filler is fluid bed light suspended filler, at the beginning of wherein bioreactor starts
The initial concentration of phase external source AHLs is 0.1 μm ol/L-1.0 μm ol/L, and the dosing method of described external source AHLs is for directly to add
Entering in bioreactor or external source AHLs loads to carrier surface adds in bioreactor by carrier the most again, water inlet
Middle pollutant ammonia nitrogen concentration≤5mg/L, organic carbon concentration≤10mg/L；
Described external source AHLs is N-bytyry homoserine lactone (C4-HSL), N-caproyl homoserine lactone
(C6-HSL), N-caprylyl homoserine lactone (C8-HSL), N-decanoyl homoserine lactone (C10-HSL), N-ten
Dialkanoyl homoserine lactone (C12-HSL) and N-tetradecane acyl homoserine lactones (C14-HSL) in one or several
The combination planted.
The when that external source AHLs described in present embodiment being composition, between individual composition be arbitrarily than.
Detailed description of the invention two: present embodiment described fluid bed light suspended filler unlike detailed description of the invention one carries
Body is vinyon filler or polypropylene plastics filler.Other is identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment described dissolved oxygen concentration unlike one of detailed description of the invention one or two is
5-7mg/L.Other is identical with one of detailed description of the invention one or two.
Detailed description of the invention four: present embodiment is described external source AHLs unlike one of detailed description of the invention one to three
Dosing method be that the method for operating being directly added in bioreactor is as follows:
External source AHLs is dissolved in Tris-HCl buffer solution, then mixed solution will be prepared adds in bioreactor,
Described Tris-HCl pH of cushioning fluid is 7.0.Other is identical with one of detailed description of the invention one to three.
Detailed description of the invention five: present embodiment is described by external source AHLs unlike one of detailed description of the invention one to four
The method loading to carrier surface is as follows:
Under conditions of 30-90 DEG C of water-bath, being dissolved in dichloromethane by PLA, dissolution time is 1-10h, then cools down
To 20-25 DEG C, adding external source AHLs, obtain mixed solution, external source AHLs dosage is at the beginning of for starting at bioreactor
The initial concentration of phase is 0.1 μm ol/L-1.0 μm ol/L, is immersed in mixed solution by fluid bed light suspended filler carrier,
And under conditions of ventilating, remove dichloromethane, external source AHLs is deposited on fluid bed light suspended filler carrier with PLA
Surface.Other is identical with one of detailed description of the invention one to four.
Detailed description of the invention six: in present embodiment described mixed solution unlike one of detailed description of the invention one to five
The mass concentration of PLA is 0.01-0.1g/ml.Other is identical with one of detailed description of the invention one to five.
Detailed description of the invention seven: present embodiment is described bioreactor unlike one of detailed description of the invention one to six
In running, hydraulic detention time is 0.5-2.5h.Other is identical with one of detailed description of the invention one to six.
Detailed description of the invention eight: present embodiment is described bioreactor fortune unlike one of detailed description of the invention one to seven
Trip temperature is 20-25 DEG C.Other is identical with one of detailed description of the invention one to seven.
Detailed description of the invention nine: present embodiment described bioreactor unlike one of detailed description of the invention one to eight opens
The initial concentration of dynamic initial stage external source AHLs is 0.2-0.9 μm ol/L.Other is identical with one of detailed description of the invention one to eight.
Detailed description of the invention ten:
Present embodiment is described bioreactor initial start stage external source unlike one of detailed description of the invention one to nine
The initial concentration of AHLs is 0.3-0.8 μm ol/L.Other is identical with one of detailed description of the invention one to nine.
Use following experimental verification effect of the present invention:
Experiment one:
This experiment a kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification follow these steps to realize:
One, Water purification filler load N-acyl homoserine lactones (AHLs):
The PLA (PLA) of 2% (w/v) is dissolved in 100ml dichloromethane, obtains the PLA that concentration is 2% (w/v)
(PLA) dichloromethane solution, then heats 5h to PLA in 60 DEG C of water-baths and is completely dissolved, then by PLA solution
It is cooled to 20-25 DEG C, in this solution, adds N-caproyl homoserine lactone (C6-HSL), its dosage is anti-at biology
The initial concentration answering device initial start stage is 0.5 μm ol/L.
The fluid bed light suspended filler filling bioreactor is placed in 1L beaker, then will be mixed with C6-HSL with
The dichloromethane solution of PLA is poured in beaker, and quick forced fluidized bed light suspended filler is to guarantee C6-HSL and PLA
It is carried on filling surface equably.Beaker is placed in ventilation 24h and is prone to the dichloromethane of volatilization in order to remove filling surface.
Two, the startup of Water purification reactor:
N-caproyl homoserine lactone (C will be loaded with6-HSL) fluid bed light suspended filler be filled in biological respinse
In device, air pump aeration ensures that dissolved oxygen concentration is 5-7mg/L, and water inlet pollutant levels are micro-polluted source water or contaminated
The general concentration range of source water, wherein ammonia nitrogen (NH3-N) concentration≤5mg/L, total organic carbon (TOC) concentration≤10
Mg/L, in reactor running, temperature range is 20-25 DEG C.
Contrast experiment:
Contrast experiment is with experiment one difference, own without external source N-in bioreactor startup and running
Acyl homoserine lactones (C6-HSL), only right as the blank adding AHLs at filling surface load PLA (PLA)
According to.
The present invention uses Na's reagent to measure NH in water3The concentration of-N, strain idenfication and microbial population analysis use
Illumina high-flux sequence method.
Bioreactor start-up course adds external source C6-HSL is on the impact of ammonia nitrogen removal effect as shown in Figure 1.Reactor
Start-up course adds external source C6-HSL accounts for the impact of total bacterium percentage as shown in Figure 2 to nitrobacteria.
As shown in Figure 1, external source C6Adding of-HSL improves the clearance of ammonia nitrogen in bioreactor start-up course, instead
Answer device to start the 1st, 6,10,11 days, experimental group ammonia nitrogen removal frank compare with control group exceed 14.29% respectively, 15.72%,
15.65%, 25%.Within 12nd day, reactor enters steady operation period, and experimental group keeps stable, efficient removal effect.By
Experimental result understands, external source C6The quick startup having added biomembrane nitrification of-HSL, improves in reactor
The removal effect of ammonia nitrogen, has reached to shorten the beneficial effect in startup cycle.
As shown in Figure 2, external source adds C6-HSL has regulating and controlling effect to Bacterial community on biomembrane, as nitrification
Function bacterium Nitraspira (Nitrospira) and Nitromonas (Nitrosomonas), C6-HSL all promotes that it is raw
Long, and then improve nitrobacteria and account for the percentage of total bacterium, wherein C6The experimental group Nitraspira of-HSL regulation and control
(Nitrospira) percentage is high compared with control group by 30.7%, and for Nitromonas (Nitrosomonas), experiment
The percentage of group is then 2.2 times of control group.From experimental result, external source C6-HSL adds for Gram-negative
The growth of bacterium nitrobacteria has facilitation, and what the method was described proposes quickly opening for biomembrance process removal target contaminant
Move and provide new approaches, shortening nitrification is started the cycle, promotes that in Water purification, the quick realization of nitrogen transfer has important
Meaning.
Claims (10)
1. one kind regulates and controls the method for treating water that biomembrane nitrification quickly starts, it is characterised in that processing method is as follows:
In the running of bioreactor, hydraulic detention time is 0.5-2.5h, and dissolved oxygen concentration is higher than 2mg/L, biological anti-
Answering device running temperature to be 5-30 DEG C, Water purification filler is fluid bed light suspended filler, wherein bioreactor initial start stage
The initial concentration of external source AHLs is 0.1 μm ol/L-1.0 μm ol/L, and the dosing method of described external source AHLs is for being directly added into life
In thing reactor or external source AHLs is loaded to carrier surface the most again carrier is added in bioreactor, dirty in water inlet
Dye thing ammonia nitrogen concentration≤5mg/L, organic carbon concentration≤10mg/L；
Described external source AHLs is N-bytyry homoserine lactone, N-caproyl homoserine lactone, N-caprylyl Kosé ammonia
In acid lactone, N-decanoyl homoserine lactone, N-dodecane acyl homoserine lactones and N-tetradecane acylhomoserine
The combination of one or more in ester.
A kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification, it is characterised in that
Described fluid bed light suspended filler carrier is vinyon filler or polypropylene plastics filler.
A kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification, it is characterised in that
Described dissolved oxygen concentration is 5-7mg/L.
A kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification, it is characterised in that
The dosing method of described external source AHLs is that the method for operating being directly added in bioreactor is as follows:
External source AHLs is dissolved in Tris-HCl buffer solution, then mixed solution will be prepared adds in bioreactor, institute
Stating Tris-HCl pH of cushioning fluid is 7.0.
A kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification, it is characterised in that
The described method that external source AHLs loads to carrier surface is as follows:
Under conditions of 30-90 DEG C of water-bath, being dissolved in dichloromethane by PLA, dissolution time is 1-10h, is subsequently cooled to
20-25 DEG C, adding external source AHLs, obtain mixed solution, external source AHLs dosage is in bioreactor initial start stage
Initial concentration is 0.1 μm ol/L-1.0 μm ol/L, is immersed in mixed solution by fluid bed light suspended filler carrier, and
Remove dichloromethane under conditions of ventilation, external source AHLs and PLA are deposited on the surface of fluid bed light suspended filler carrier.
A kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification, it is characterised in that
In described mixed solution, the mass concentration of PLA is 0.01-0.1g/ml.
A kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification, it is characterised in that
In the running of described bioreactor, hydraulic detention time is 0.5-2.5h.
A kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification, it is characterised in that
Described bioreactor running temperature is 20-25 DEG C.
A kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification, it is characterised in that
The initial concentration of described bioreactor initial start stage external source AHLs is 0.2-0.9 μm ol/L.
A kind of regulate and control the method for treating water that quickly starts of biomembrane nitrification, its feature exists
Initial concentration in described bioreactor initial start stage external source AHLs is 0.3-0.8 μm ol/L.
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| CN201610457844.8A CN105923744B (en) | 2016-06-22 | A kind of method for treating water of regulation biomembrane nitrification quick start |
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|---|---|---|---|
| CN201610457844.8A CN105923744B (en) | 2016-06-22 | A kind of method for treating water of regulation biomembrane nitrification quick start |
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| CN105923744A true CN105923744A (en) | 2016-09-07 |
| CN105923744B CN105923744B (en) | 2019-07-16 |
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| CN107158957A (en) * | 2017-03-22 | 2017-09-15 | 北京大学深圳研究生院 | The method that immobilization bacterial strain controls fouling membrane is quenched in a kind of utilization quorum sensing |
| CN107352647A (en) * | 2017-09-08 | 2017-11-17 | 南京大学 | A kind of method for improving anaerobic granulation efficiency |
| CN109608292A (en) * | 2018-12-27 | 2019-04-12 | 中国科学院生态环境研究中心 | A kind of nitrogen fertilizer composition and application thereof |
| CN110745966A (en) * | 2019-11-06 | 2020-02-04 | 南京大学 | Binary system of quorum sensing-aerobic denitrifying bacteria for enhancing biomembrane denitrification under low-temperature condition, construction method and application |
| CN112707517A (en) * | 2021-01-08 | 2021-04-27 | 南京源创境环保科技有限公司 | Biological anchoring agent and preparation method and application thereof |
| CN112811580A (en) * | 2021-01-18 | 2021-05-18 | 南京大学 | Method for regulating and controlling biofilm formation by quickly matching wastewater and signal molecules |
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| CN105084552A (en) * | 2015-07-31 | 2015-11-25 | 北京师范大学 | Method for enhancing aerobiotic ammonia oxidizing bacterium gathering through N-acylated homoserine lactones |
| CN105565481A (en) * | 2015-12-29 | 2016-05-11 | 广东石油化工学院 | Method for modifying biological filler with oyster shell powder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107158957A (en) * | 2017-03-22 | 2017-09-15 | 北京大学深圳研究生院 | The method that immobilization bacterial strain controls fouling membrane is quenched in a kind of utilization quorum sensing |
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| CN107352647B (en) * | 2017-09-08 | 2020-01-07 | 南京大学 | Method for improving anaerobic sludge granulation efficiency |
| CN109608292A (en) * | 2018-12-27 | 2019-04-12 | 中国科学院生态环境研究中心 | A kind of nitrogen fertilizer composition and application thereof |
| CN110745966A (en) * | 2019-11-06 | 2020-02-04 | 南京大学 | Binary system of quorum sensing-aerobic denitrifying bacteria for enhancing biomembrane denitrification under low-temperature condition, construction method and application |
| CN110745966B (en) * | 2019-11-06 | 2021-12-17 | 南京大学 | Binary system of quorum sensing-aerobic denitrifying bacteria for enhancing biomembrane denitrification under low-temperature condition, construction method and application |
| CN112707517A (en) * | 2021-01-08 | 2021-04-27 | 南京源创境环保科技有限公司 | Biological anchoring agent and preparation method and application thereof |
| CN112707517B (en) * | 2021-01-08 | 2022-08-02 | 南京源创境环保科技有限公司 | Biological anchoring agent and preparation method and application thereof |
| CN112811580A (en) * | 2021-01-18 | 2021-05-18 | 南京大学 | Method for regulating and controlling biofilm formation by quickly matching wastewater and signal molecules |
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