CN104150586B - A kind of MBBR and the method processing sewage thereof - Google Patents
A kind of MBBR and the method processing sewage thereof Download PDFInfo
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- CN104150586B CN104150586B CN201410407361.8A CN201410407361A CN104150586B CN 104150586 B CN104150586 B CN 104150586B CN 201410407361 A CN201410407361 A CN 201410407361A CN 104150586 B CN104150586 B CN 104150586B
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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
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- 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
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Abstract
The invention discloses a kind of MBBR and the method processing sewage thereof.Above-mentioned biofilm reactor includes tank body, water inlet bucket, peristaltic pump, aeration sand head and air aeration machine, filler it is filled with in tank body, filler is K3 type filler, a diameter of 2.5cm of K3 type filler, being highly 1.1cm, material is polypropylene, and filler filling rate in tank body is 40%, also include time controller, control peristaltic pump, air aeration machine and the switch of water outlet solenoid valve and the time of operation.The present invention has the advantage that compared to existing technology in same reactor, realize aerobic and anaerobic environment simultaneously, synchronous nitration and denitrification process can be realized in single-reactor, there is minimizing organic loading and aeration rate, reduce the advantage such as capital construction and operating cost, and good denitrification effect can be reached.
Description
Technical field
The present invention relates to sewage treatment area, a kind of MBBR and the method processing sewage thereof.
Background technology
Theoretical according to traditional biological denitrogenation, biological denitrification process includes assimilation, ammonification, nitrification and denitrification effect.First pass through
The organic nitrogens such as protein, urea, aminated compounds are converted into ammonia nitrogen by the ammoniation of heterotroph, then under aerobic condition,
Through aerobic autotrophic type nitrifier and the effect of nitrococcus, it is nitrite nitrogen or nitrate nitrogen by the ammonium oxidation in sewage,
After under anoxic conditions, nitrite and nitrate transformation are nitrogen by denitrifying bacteria, thus reach the purpose of denitrogenation.
Traditional biological denitrificaion theory thinks that, in the case of aerobic, denitrification process is difficult to, thus in single-reactor not
Synchronous nitration and denitrification can be reached.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of MBBR.
The present invention is achieved by the following technical solutions: a kind of MBBR, including tank body, water inlet bucket, compacted
Dynamic pump, aeration sand head and air aeration machine, tank wall top arranges sample tap, arranges delivery port, water outlet in the middle part of tank wall
Mouth arranges water outlet solenoid valve, and tank wall bottom arranges water inlet, and water inlet bucket is connected to water inlet by flexible pipe, and peristaltic pump sets
Putting on the flexible pipe between water inlet bucket and water inlet, aeration sand head is arranged on tank base, and aeration sand head is exposed with air by flexible pipe
Mechanism of qi is connected, it is characterised in that: being filled with filler in tank body, filler is K3 type filler.
As further improvement of these options, a diameter of 2.5cm of K3 type filler, height is 1.1cm, and material is poly-third
Alkene.
As further improvement of these options, also include time controller, time controller and peristaltic pump, air aeration machine
It is connected with water outlet solenoid valve.
As further improvement of these options, filler filling rate in tank body is 40%.
During use, reactor is provided to run required oxygen and make internal floating stuffing rotate by aeration, filler material selection poly-third
Alkene, its filling rate is 40%, and packing density is near with aqueous phase, therefore in the sewage of full bubble, it is possible to along with current and air-flow
Roll up and down, it is achieved the material in sewage is fully contacted with filler surfaces externally and internally.
Present invention also offers a kind of method that above-mentioned MBBR processes sewage, mainly comprise the steps that
1) by sewage storage in water inlet bucket；
2) start peristaltic pump, in tank body, carry sewage, and by time controller, control flooding time；
3) start air aeration machine, ventilated in tank body by aeration sand head, and by time controller, control aeration time；
4) stop aeration, stand a period of time；
5) process terminates, and starts water outlet solenoid valve, the sewage that discharge processed, and passes through time controller, when controlling draining
Between.
As the further improvements in methods to above-mentioned process sewage, the MBBR operation single cycle is 12h,
Wherein flooding time is 15min, and aeration time is 7.5h, and time of repose is 4h, and water discharge time is 15min.
As the further improvements in methods to above-mentioned process sewage, control the sewage DO concentration in water inlet bucket at 3～4mg L-1。
The present invention have the advantage that compared to existing technology MBBR on the basis of technology of biological membrane, with outstanding
On floating filling carrier, the biomembrane of apposition growth replaces activated sludge and a kind of combined film biology sewage treatment equipment of being formed, its
Biomembrane is as a kind of special germs collect form, and it has the advantage of uniqueness on mass transfer condition and various bacteria symbiosis,
Stable aerobic zone, anoxic zone/anaerobic zone can be formed on biomembrane, thus realize in biofilm surface nitrification, internal denitrification
Synchronous nitration and denitrification process.This programme can reduce Sewage Biological Treatment cost and can improve effluent quality.By building one
Individual efficient MBBR, makes filler rapid biofilm in reactor, and nitrifier and denitrifying bacterium are enriched with,
Realize synchronous nitration and denitrification (SND) in single-reactor, form the synchronous nitration of the MBBR of a kind of maturation
Denitrification method, can be applicable to existing city domestic sewage and processes the upgrading of technique.Use moving bed biological film reaction
Synchronous nitration and denitrification (SND) the denitrogenation technology of device (MBBR) is as a kind of novel bio-denitrification technology, it is possible to effectively
Process low C/N sewage, can be applied independently in biological denitrificaion, also can be combined with other technique, can be applicable to existing urban life
The upgrading of sewage treatment process, improves effluent quality, reduces the discharge of nitrogen nutrition, has a good application prospect.?
Single-reactor can realize synchronous nitration and denitrification process, there is minimizing organic loading and aeration rate, reduce capital construction and running cost
With etc. advantage, and good denitrification effect can be reached.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is biofilm development situation and scanning electron microscopic picture thereof: A/B, rise period on different times filler；C/D, the maturity period.
Fig. 3 is MBBR organics removal ability: single periodic duty situation (A), overall operation situation (B).
Fig. 4 MBBR single cycle denitrification ability: initial biofilm stage (A), the biofilm stage of ripeness (B).
Fig. 5 MBBR overall operation denitrification ability.
DGGE collection of illustrative plates (left) and band similitude schematic diagram (right) during Fig. 6 Biofilm Colonization.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention,
Give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
A kind of MBBR, including tank body 1, water inlet bucket 4, peristaltic pump 3, aeration sand head 2 and air aeration machine
5, tank body 1 side wall upper part arranges sample tap 6, arranges delivery port 7 in the middle part of tank body 1 sidewall, and delivery port 7 arranges delivery port electricity
Magnet valve 9, tank body 1 lower sidewall arranges water inlet 8, water inlet bucket 4 by being flexible coupling to water inlet 8, peristaltic pump 3 be arranged on into
On flexible pipe between bucket 4 and water inlet 8, aeration sand head 2 is arranged on bottom tank body 1, and aeration sand head 2 is by flexible pipe and sky
Gas aerator is mutually 5 even, it is characterised in that: being filled with filler in tank body, filler is K3 type filler, K3 type filler a diameter of
2.5cm, height be 1.1cm, and material is polypropylene, also includes time controller 10, time controller 10 and peristaltic pump 3,
Air aeration machine 5 is connected with water outlet solenoid valve 9, and filler filling rate in tank body is 40%.
During use, reactor is provided to run required oxygen and make internal floating stuffing rotate by air aeration machine and aeration sand head,
Filler material selection polypropylene, its filling rate is 40%, and packing density is near with aqueous phase, therefore in the sewage of full bubble, energy
Enough roll up and down along with current and air-flow, it is achieved the material in sewage is fully contacted with filler surfaces externally and internally.
Above-mentioned MBBR process sewage method, mainly comprise the steps that 1. by sewage storage in water inlet bucket
In 4, control water inlet bucket 4 in sewage DO concentration at 3～4mg L-1；2. start peristaltic pump 3, in tank body 1, carry sewage,
And by time controller 10, control flooding time；3. start air aeration machine 5, led in tank body 1 by aeration sand head 2
Gas, and by time controller 10, control aeration time；4. stop aeration, stand a period of time；5. process terminates, and starts
Water outlet solenoid valve 9, the sewage that discharge processed, and by time controller 10, control water discharge time.
As improvement, the MBBR operation single cycle is 12h, and wherein flooding time is 15min, aeration time
For 7.5h, time of repose is 4h, and water discharge time is 15min.
The selection of filler
Filler is K3 type, and its parameter is as shown in the table.K3 type filler, after biofilm, forms the aerobic zone of action at its outer surface,
Inside filler, because biomembranous growth makes inner space the narrowest and small, form anaerobic effect region, it is achieved thereby that single
Can reach in reactor to have simultaneously and support and anaerobic environment.In the aerobic zone of action of filling surface, aerobic autotrophic type nitrococcus,
Ammonium oxidation in sewage is nitrite nitrogen or nitrate nitrogen by nitrifier, and then in the internal anaerobic zone of filler, denitrification is thin
Nitrite and nitrate transformation are nitrogen by bacterium, thus reach the purpose of denitrogenation.
Seed sludge and test water
Seed sludge takes from Wang Tang sewage treatment plant of Hefei City oxidation ditch, and concentration is 3000mg L-1.Manual simulation's waste water is used to enter
Row cultivates biofilm, and Main Ingredients and Appearance is: COD (adding sucrose and the sodium acetate of 1:1) 200mg L-1, NH4 +-N, 40mg L-1,
KH2PO4, 30mg L-1, add trace element as shown in the table, and use NaHCO3Regulation inlet flow-patterm is to about 7.5.
Biomembranous growth
Reactor seed sludge after a few days, begins with the attachment of a small amount of microorganism inside filler, this stage is the laundering period of microorganism.
After reactor runs 20 days, filler have accumulated microorganism in internal most spaces, and on filler, biological membrane biological phase change is big, micro-life
Species is more, and this is biomembranous rise period (Fig. 2 A/B).When reactor runs to about 50 days, and biofilm surface fastens,
Bacillus on biomembrane, the quantity showed increased such as der Pilz, mutually it is wound bacterium glue between biomembrane more consolidation, and microorganism
Group, der Pilz, bacillus be enriched with in a large number, agglomerating cluster, and generate number of polymers and be wrapped in wherein, and stabilized structure is said
Bright now biomembrane reaches the stage of ripeness (Fig. 2 C/D).
During biomembranous cultivation domestication, biofilm thickness is continuously increased, and on filler, biofilm biomass is also constantly increasing.Instead
Single filler average organism film weight after answering device to run 20 days reaches 0.0053gSS filler-Isosorbide-5-Nitrae 0 day, 60 days and 80 days
After respectively reach 0.0168gSS filler-1,0.0266gSS filler-1 and 0.0335gSS filler-1.Biofilm thickness
Increase, beneficially system run the ability stabilizing and increasing its organics removal and denitrogenation.
The removal of COD
In the reactor whole service stage, inlet COD concentration is fixed as 200mg L-1, COD clearance is gradually increased (Fig. 3 B).
Removing of initial operating stage COD is mainly the metabolism of heterotroph in mud, poor to the waste water adaptability of low COD/N, COD
Clearance is between 70%～80%.Reactor runs the later stage and improves because microorganism adapts to ability to low COD/N waste water, and with life
The increase of thing film thickness, the enhancing of denitrification ability, COD clearance improves, and the clearance to later stage average COD is
86.68%.
The realization of synchronous nitration and denitrification effect
At initial biofilm stage (Fig. 4 A), owing to biomembrane contacts fully with waste water, dissolved oxygen in reactor, nitrosation, nitrification
Reaction is fully carried out, NH4 +-N concentration fall off rate is very fast, in 2h～3h, and NH4 +-N clearance is up to more than 87.5%.
Constantly carry out with nitrosation and nitration reaction, nitrite and the continuous accumulation of nitrate.At the stage of standing, nitrous in reactor
Hydrochlorate and nitrate content reduce, and show that the beneficially denitrification of this stage is carried out.
After biomembrane maturation (Fig. 4 B), microorganism is mainly enriched in inside filler inside reactor, so microorganism and pollution
Thing contact surface is limited, and rate of nitrification substantially slows down, but NH4 +-N removal effect is preferable.At whole periodic process nitrite
Substantially without accumulation, illustrating that nitration reaction process is abundant, and Nitrate accumulation is the slowest, display is under aerobic condition, raw
In thing film, denitrification process is the most constantly carried out, and during an end cycle, in reactor, Nitrate accumulation is less than 5mg L-1.Quiet
Putting the stage, nitrate concentration continues to reduce.
In the whole experimental stage, nitrosification is constantly in higher level (Fig. 5), NH4 +-N clearance 94.15%～
Between 98.05%；After biomembrane maturation, its average removal rate reaches 97.25%.TN clearance gradually carries with biomembranous maturation
High.In starting stage water outlet, TN concentration is higher, and TN clearance is about 50%, and this is mainly due to caused by Nitrite accumulation,
Water outlet nitrite concentration is up to 11.29mg L-1, show that in this stage reactors, nitrobacteria activity is the highest.With reactor
Operation, internal nitrifier is constantly enriched with filler, makes water outlet nitrite concentration in reactor be gradually lowered, and nitrification efficiency is obvious
Improve.
Though reactor stands the carrying out of stage beneficially denitrification process, but the biofilm thickness because growing on filler is less, biological
Film is difficult to reach anoxia condition at aeration phase, is difficult to realize denitrification process in the whole service cycle, so nitre during this
Hydrochlorate concentration is still continuously increased.After reactor runs 50 days, in reactor water outlet, nitrate concentration presents downward trend, explanation
Biofilm thickness be gradually increased to certain value, the anaerobic environment on biomembrane gradually forms, and denitrifying bacterium is building up, increasing
Grow and there is good activity.In this operation phase, reactor water outlet, nitrate content reduces amplitude relatively greatly, and aqueous concentration is low
In 4mg L-1, TN clearance is up to 90.6%.
In sum, with K3 type filler as carrier, heterotroph, nitrococcus, nitre are defined at MBBR
The system that change bacterium and denitrifying bacterium coexist, achieves organic degraded and synchronous nitration and denitrification in single-reactor.
Analysis of Microbial Diversity
Use the deformation gradient gel electrophoresis technology (DGGE) the moving-bed biofilm shape to having stable synchronous nitration and denitrification function
During one-tenth, the diversity of microorganism has carried out analyzing (Fig. 6).23 different bands are had altogether on DGGE electrophoresis pattern,
It is respectively labeled as 1,2 ..., 23.Show that 1 deforms Gammaproteobacteria for gamma through clonal analysis；2 is actinomyces；3 is Flavobacterium
Belong to, can be with dephosphorization；4 is mycetozoan, belongs to anaerobic denitrifying bacterium；5 is Xanthomonas campestris, aerobic heterotroph；6 is primary gram of Hall
Moral Bordetella；7 belong to for Nitrosospira；8 is bacteroid；9/11 Zoogloea；10 deform Gammaproteobacteria, tool for gamma
There are reduction nitrate or the ability of nitrite；12 deform Gammaproteobacteria for Alpha；13 Leuconostocs, can under aerobic condition
Utilize sucrose；14 deformation Gammaproteobacterias；15TM7 monoid；16 nitrification spirillums；17 Beijerinckias, azotobacter belongs to,
Obligate aerobic fixed nitrogen bacterium；18 Rhods, aerobic heterotroph；19 is Steroidobacter Pseudomonas；20 nitrosation lists
Born of the same parents Pseudomonas；21 Erythrobacilluses；22 green curved bacterium doors, facultative anaerobe；23 Acetobacters, obligate aerobic bacteria.
Note: 1 is primary sludge, 2-7 by being taken biomembrane during biological Membrance cuiture, be respectively the 15th sample time, 40,50,
60,70,80 days, the similitude system that in band similitude schematic diagram (right), bottom data is each swimming lane with No. 1 swimming lane as reference
Number, according to descending order arrangement.
Biomembrane, during cultivating domestication, has new band to occur, also has band to disappear, and this shows to be not suitable with the micro-of condition of culture
Biology is eliminated, and adaptable is the most gradually dominant.Some nitrococcus are then essentially present in each of reactor operation
Period, such as 20；And some nitrifiers and nitrococcus are grown into the cultivation of system, increase, such as 7,16；With biology
The growth of film, engenders the mycetozoan with denitrification, with biomembranous thicken and amount reproduction, such as band 4 and 10；
Occur in that azotobacter belongs to 17 in the later stage；Other there is also some aerobic heterotrophs, more during cultivating in the early stage,
Along with the continuation cultivated, play kind major part and be eliminated, such as 1,5,19 etc..
Analysis of Microbial Diversity result also confirms by the control to MBBR service condition, can be at list
The living things system that in one reactor, acquisition nitrite bacteria, nitrobacteria, denitrifying bacteria coexist, thus realize simultaneous nitrification and denitrification
Nitrification.
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all the spirit and principles in the present invention it
Interior made any amendment, equivalent and improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a MBBR, including tank body, water inlet bucket, peristaltic pump, aeration sand head and air aeration machine, institute
Stating tank wall top and arrange sample tap, arrange delivery port in the middle part of described tank wall, described delivery port arranges water outlet solenoid valve,
Described tank wall bottom arranges water inlet, and described water inlet bucket is connected to described water inlet by flexible pipe, and described peristaltic pump is arranged on
On flexible pipe between described water inlet bucket and described water inlet, described aeration sand head is arranged on described tank base, described aeration sand head
It is connected with air aeration machine by flexible pipe, it is characterised in that: being filled with filler in described tank body, described filler is K3 type filler.
2. as claimed in claim 1 a kind of MBBR, it is characterised in that: described K3 type filler a diameter of
2.5cm, height is 1.1cm.
3. a kind of MBBR, it is characterised in that: the material of described K3 type filler
For polypropylene.
4. a kind of MBBR, it is characterised in that: also include time controller,
Described time controller is connected with peristaltic pump, air aeration machine and water outlet solenoid valve.
5. a kind of MBBR, it is characterised in that: described filler is at described tank body
In filling rate be 40%.
6. the method that MBBR as claimed in claim 4 processes sewage, mainly comprises the steps that
1) by sewage storage in described water inlet bucket；
2) start described peristaltic pump, in described tank body, carry sewage, and by described time controller, control flooding time；
3) described air aeration machine is started, by described aeration sand head aeration in described tank body, and by described time controller,
Control aeration time；
4) stop aeration, stand a period of time；
5) process terminates, and starts described water outlet solenoid valve, the sewage that discharge processed, and by described time controller, control
Water discharge time processed.
7. the method that a MBBR as claimed in claim 6 processes sewage, it is characterised in that: described shifting
The movable bed biofilm reactor operation single cycle is 12h, and wherein said flooding time is 15min, and described aeration time is 7.5h,
Described time of repose is 4h, and described water discharge time is 15min.
8. the method that a MBBR as claimed in claim 6 processes sewage, it is characterised in that: control institute
State into the sewage DO concentration in water bucket at 3～4mg L-1。
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104803477A (en) * | 2015-04-03 | 2015-07-29 | 沈阳师范大学 | Moving bed biological film reaction unit and sewage treatment method |
| CN104817168A (en) * | 2015-04-13 | 2015-08-05 | 广东石油化工学院 | Biofilm culturing method of MBBR technology fillers |
| CN104843871B (en) * | 2015-05-04 | 2016-09-21 | 成都八八五生物科技发展有限公司 | A kind of method controlling Nitrite |
| CN109704455B (en) * | 2019-02-27 | 2020-11-27 | 同济大学 | Method for realizing rapid growth of biological membrane in nitrosation process |
| CN110304715A (en) * | 2019-06-21 | 2019-10-08 | 安吉国千环境科技有限公司 | A kind of MBBR biofilm method suitable for sanitary sewage |
| CN113772891B (en) * | 2021-09-24 | 2023-04-18 | 中国科学院沈阳应用生态研究所 | In-situ purification treatment method for rural water closet wastewater in cold region in winter |
| CN114772711B (en) * | 2022-04-13 | 2024-04-16 | 中国长江三峡集团有限公司中华鲟研究所 | Rapid film forming method of biological moving bed |
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Granted publication date: 20160817 Termination date: 20210818 |