CN109809557A - A kind of the modified ABR reaction unit and starting method of inhibition acidification phenomenon - Google Patents
A kind of the modified ABR reaction unit and starting method of inhibition acidification phenomenon Download PDFInfo
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Abstract
The present invention provides a kind of modified ABR reaction units for inhibiting acidification phenomenon, the ABR device is made of 4~6 compartments, each compartment include upward flow cell compartment and it is lower to stream cell compartment, upward flow cell compartment and lower the ratio between volume to stream cell compartment are 3:1~5:1, wherein, it is provided with floating stuffing in upward flow cell compartment, is stamped stationary grid in floating stuffing upper and lower.Head is equipped with agitating device into stream cell compartment every lower, and termination compartments are equipped with return pipe, and each upper compartment is equipped with gas-guide tube, and except head is in addition to, other cell bottoms are equipped with mud-removing bucket.Floating stuffing of the present invention uses tourmaline/polyurethane compounded mix, which has the acidification phenomenon inhibited during anaerobic reaction, effectively increase the anaerobic bacterias metabolic activity such as methanogen, shorten the reactor start-up time.For the device compared with traditional ABR reaction unit, water distribution is uniform, does not generate dead zone, can efficiently separate the influence that suspended matter is avoided into the suspended matter in water to sludge activity, runs efficient stable.The invention belongs to waste water treatment process technical fields.
Description
Technical field
The present invention relates to a kind of modified ABR reaction unit for inhibiting acidification phenomenon and starting methods, belong to wastewater treatment
Technology field.
Background technique
1979, for Bryant et al. on the basis of former works, further perfect anaerobic digestion was theoretical, proposed
Three-stage theory, it may be assumed that hydrolysed ferment stage, hydrogenesis and acetogenesis stage, methane phase stage.The theory thinks, complicated organic matter
Anaerobic digestion is hydrolyzed in the first stage and fermentation reaction；Second stage, under the action of hydrogen-producing acetogens, by the first rank
Tunning propionic acid, butyric acid, the ethyl alcohol etc. of section are converted into acetic acid, H2And CO2；Phase III, under the action of methanogen, second
Acid, H2And CO2It is further converted to CH4。
In the early 1980s, Stanford university, U.S. McCarty et al. has been put forward for the first time ABR reactor concept.Make
For a kind of novel anaerobic reactor, the unique construction of ABR reactor is that a series of foldings being disposed vertically are arranged in inside reactor
Baffle is flowed, making waste water, baffling moves above and below hydraulic barrier in reactor, passes sequentially through the Sludge Bed of each compartment until going out
Mouthful, the organic substance in waste water comes into full contact with anaerobic activated sludge and is removed in the process.As third generation anaerobism
Reactor, ABR structure of reactor is simple, on the whole closer to pulling flow type, does not need three phase separator, and the fortune of reactor
Row is more stable, flexibly effective.The unique format structure of ABR and pulling flow type fluidised form make to inoculate and culture out in each compartment
The adaptable microbiologic population with the sewage quality in the compartment, environmental condition, to make the production acid of anaerobic processes mutually and produce first
Alkane journey of handing down is separated, and is conducive to the activity for giving full play to anaerobism bacterium colony, is improved the treatment effect of system.
Since anaerobe metabolic rate is low, the generation cycle is long, sensitive to environmental change, therefore ABR reactor opens
The dynamic time is long, and the high concentrated organic wastewater processing starting time is generally 180~300d, becomes and restricts it in high concentration organic waste
One of principal element of application in water process.In heavy-duty service condition, ABR reactor is easy to appear oxidation-reduction potential
Rise, water outlet pH value decline, volatile organic acids (VFA) concentration increases, and VFA content and level of alkalinity ratio increase, and cause
Methane production decline, water outlet COD removal rate decline and occur peculiar smell, and reaction system does not have the ability that itself adjusts acidification, this
The acidification phenomenon that kind phenomenon is just known as.Acidification phenomenon is one of the critical issue of current ABR reactor fluctuation of service.
Currently, shortening ABR reactor by modes such as setting filler, adjusting influent load, optimization structure of reactor
Start the time, effect is not significant；Taking the measures solution such as reduces influent load, adds fresh sludge, adds lye, recycling effluent
Certainly acidification phenomenon.
Li Gangs in 2002 etc. in the paper " research of ambient temperature anaerobic baffled reactor operation characteristic " using from
A certain amount of fresh sludge supplement biomass is added into reactor for first cell compartment, while adding lye and adjusting the sides such as water inlet pH value
Formula solves the acidification phenomenon of the reactor, the debugging through 28d, ABR reactor COD comeback of removal rate to 86.9%.
Su Chengyuan in 2014 etc. is in article " ABR handles the characteristic of the excessive process of sugar production wastewater acid and restores regulation " using increasing
The combined regulating Fang Laifa for adding alkalinity of water and reduction load solves the reactor acidification phenomenon, and ABR reactor restores after 15d
Normally, the removal rate that water outlet pH value reaches 6.6~6.7, COD reaches 86.2%.This mode needs to increase fresh sludge and alkali
The operating costs such as liquid.
2007 Nian Liu little thunders etc. are in the paper " operational mode and effect of period anaerobic baffled reactor processing traditional Chinese medicine wastewater
Can " in change ABR reactor the method for operation avoid reactor acidification phenomenon.In processes when medicine waste water, by periodically cutting
The inlet valve control model for changing four compartment ABR reactors is up to 6.45kg COD/ (m in organic loading3When d),
COD removal rate is up to 92.51%.But the method for operation is more complex, and system automation degree is more demanding, therefore, cost of investment
It is larger, be not suitable for small-scale waste water processing.
2016 annuities build auspicious et al. patent of invention " grated plate type moving bed modified reactor and its starting method "
(CN105776534A) upward flow cell compartment is provided with floating stuffing, filler is adjusted by support rod.Grated plate type moving bed ABR reaction
Device can carry out the culture of sludge, domestication at times, substantially reduce the starting time, improve the biological treatment efficiency of device.Phase
Than traditional ABR reactor, the starting time shortens about 10d.But the invention does not have the function of preventing reactor to be acidified.
Summary of the invention
The present invention is quasi- to improve the internal structure of anaerobic baffled reactor, provides a kind of changing for inhibition acidification phenomenon
Into type ABR reaction unit.Blender, except head is in addition to, remaining compartment bottom are set to stream cell compartment bottom every lower in ABR reaction unit head
Sludge bucket is arranged in portion, solves the problems, such as that influent quality is uneven, suspended solid (SS) influence sludge activity in reactor；It is anti-in ABR
Answer in device filling tourmaline/polyurethane compounded mix, solve hydrolysis acidification section be easy to happen acidification phenomenon, methanogen by
The problems such as inhibition, anaerobe increases slowly, the anaerobism starting time is longer.
Technical scheme is as follows:
A kind of modified ABR reaction unit inhibiting acidification phenomenon, which is made of 4~6 compartments, each every
Room includes lower to stream cell compartment and upward flow cell compartment, upward flow cell compartment and it is lower to the ratio between volume of stream cell compartment be 3:1~5:1, wherein
It is provided with floating stuffing in upward flow cell compartment, is equipped with stationary grid in floating stuffing upper and lower；Head is equipped with every lower into stream cell compartment
Agitating device, termination compartments top are equipped with effluent recycling pipe；Each upper compartment is equipped with gas-guide tube, except head is in addition to, remaining compartment
Bottom is equipped with mud-removing bucket and mud return line.
Further, the screen is mesh, and stainless steel material is rectangle or square, is fixed on pool wall.
Further, filler is filled between two layers of screen, and the reserved filling hole in upper layer installs rear enclosed to filler.
Further, the cell size of the screen is less than the minimum dimension of floating stuffing.
Further, the floating stuffing is tourmaline/polyurethane foam compounded mix: tourmaline content be 100~
300kg/m3, density is 0.58~0.77g/cm3, filler is the square of 2~5cm of side length, and porosity is 50~70%, aperture
For 2~4mm.
Further, 100 parts of polyether polyol, three ethyl alcohol tourmaline/polyurethane foam compounded mix preparation method: 1) are taken
1.1 parts of amine, 1.2 parts of organosilicon foam stabilizer, 4.0 parts of distilled water, 13 parts of dibutyl tin dilaurate, 13.6 parts of tourmaline are (electrical
8%) stone mass fraction is.Above-mentioned drug is added sequentially to the beaker of 500ml, component A is formed, in 20 DEG C of constant temperature, 800rpm
Under the conditions of be vigorously stirred 3min, make to be uniformly mixed.2) 38 parts of toluene di-isocyanate(TDI)s are taken to be added in component A, mechanical stirring
1min is uniformly mixed it, pours into foam box rapidly, foam.3) it is opened after foaming 30min, takes out flexibel polyurethane
Foam obtains tourmaline/polyurethane compounded mix after curing 48h.
Further, the dosage of the floating stuffing accounts for the 50%~70% of upward flow cell compartment dischargeable capacity.
Further, first to be equipped with agitating device into stream cell compartment every lower.
Further, termination compartments are equipped with return pipe.
Further, each upper compartment is equipped with gas-guide tube, and except head is in addition to, remaining cell bottom is equipped with mud-removing bucket.
A kind of above-mentioned modified ABR reaction unit for inhibiting acidification phenomenon starts method, comprising the following steps:
Step 1, anaerobic sludge is taken, pumps supernatant after standing, obtains concentration as the thickened sludge of 30~45g/L, then
Glucose is put into thickened sludge, is stirred, and is stood, is obtained seed sludge；
Step 2, diluted high concentrated organic wastewater is pumped into full ABR reactor, stops water inlet.It is dirty by being inoculated with obtained by step 1
Mud is inoculated into modified ABR reactor, and water temperature is controlled at 20~30 DEG C.Sludge reflux pump is opened simultaneously, sewage backflow pump, is stirred
Device is mixed, 15~20g/L of concentration of mean sludge in its reactor is made；Sewage backflow is pumped 24 hours and is run, and hydraulic loading reaches
0.5m3/(m2H) it more than, runs on 15~20d (extension touches the phase) filler and biomembrane occurs, subsequently into domestication early period.Domestication
Early period using influent load is gradually increased and reduces the operation method progress sludge acclimatization of HRT, cultivates using 50~90d and tames and dociles
Change, biofilm biomass is stablized on filler, into the domestication later period；The domestication later period, which still uses, is gradually increased influent load and reduction HRT
Mode run, approximately pass through 60~90d operation, water inlet index reach raw water quality index, stable effluent quality, reactor opens
It moves successfully.
Further, biofilm phase, the sludge reflux pump cycle of operation are 5~8h, and flow back 5~10min of duration every time, and sludge returns
Start blender when stream.
Further, biofilm phase, sewage backflow pump are run for 24 hours, and hydraulic loading reaches 0.5m3/(m2·h)。
Further, the biofilm phase runs biomembrane on 15~20d filler and reaches 35~50g VSS/m2Filler.
Further, it tames early period, each influent load improves ratio and is maintained at 12~36h no more than 10%, HRT.
Further, early period is tamed, biomembrane on 50~90d filler is run and reaches 90~120g VSS/m2Filler.
Further, it tames the later period, each influent load improves ratio and is maintained at 12~36h no more than 20%, HRT.
Further, the later period is tamed, runs 60~90d, COD removal rate, volumetric loading respectively reach 80%, 10kg/
(m3·d1) more than.
Further, using tourmaline/polyurethane compounded mix, there is electric polarity and permanent spontaneous pole using tourmaline
Change effect, the pH value of spontaneous adjusting water environment inhibits anaerobic reactor acidification phenomenon, promotes methanogen growth；Tourmaline energy
Associated water molecules degree is enough reduced, water molecule cluster is reduced, conducive to the absorption and utilization of microorganism, to enhance the new old of microorganism
Metabolic capability, these properties are greatly improved the activity and quantity of anaerobe, and it is dirty effectively and rapidly to turn out degradation feature
The dominant microflora of object is contaminated, and then shortens the reactor start-up time.
Beneficial effect
(1) compared with traditional ABR reaction unit, in tourmaline of the present invention/polyurethane compounded mix, tourmaline has electrode
Property and permanent spontaneous polarization effect, can reduce associated water molecules degree, reduce water molecule cluster, be conducive to the absorption of microorganism
And utilization improves activity, makes its biofilm on filler rapidly, shorten device to enhance the metabolic capabilities of microorganism
The starting time, can generally shorten for 20% or so starting time.
(2) heavy bucket is set in compartment, is conducive to the separation of waste water SS in compartment, avoids SS to microbial activity
It influences, enhances the stability of reactor operation.
(3) acetylene has the function of spontaneous adjusting wastewater pH, make hydrolysis acidification section pH between 6.5~7.5, effectively
Inhibit the acidification phenomenon of Anaerobic Treatment process.In acid condition, the great amount of hydroxy group on tourmaline surface is easily by H in acid solution+Attract and neutralize, causes the rapid increase of pH；Under alkaline condition, OH-Presence, it is suppressed that tourmaline Surface hydroxyl release, silicon
The fracture of Si-O key and triangle B-O key in oxygen tetrahedron leads to the hydroxy combining in Si, the B and water on surface, causes pH's
Decline.Therefore, acetylene has the function of spontaneous adjusting wastewater pH, enhances the activity of microorganism, promotes methanogen growth, increases
Add the yield of methane.
Detailed description of the invention:
Fig. 1 is the modified ABR reaction unit structural schematic diagram that one of embodiment 1 inhibits acidification phenomenon
Wherein, 1- water inlet, 2- compartment, to stream cell compartment under 3-, 4- upward flow cell compartment, 5- screen, 6- blender,
7- effluent recycling pipe, 8- mud return line, 9- water outlet, 10- gas-guide tube, 11- filler, 12- mud-removing bucket.
The tourmaline that Fig. 2 present invention uses/polyurethane compounded mix photo
Fig. 3 uses tourmaline prepared by the present invention/polyurethane compounded mix SEM photograph
Fig. 4 is ABR reaction unit structural schematic diagram traditional in embodiment
Wherein, 1- water inlet, 2- compartment, to stream cell compartment, 4- upward flow cell compartment, 5- folded plate, 6- effluent recycling pump, 7- under 3-
Sludge blanket, 8- water outlet, 9- gas-guide tube.
Specific embodiment
Following embodiment further illustrates the contents of the present invention, but should not be construed as limiting the invention.Without departing substantially from
In the case where spirit of that invention and essence, to modification made by the method for the present invention, step or condition and replaces, belong to the present invention
Range.Unless otherwise specified, the conventional means that technological means used in embodiment is well known to those skilled in the art.
Embodiment 1
Certain food additives Co., Ltd sorbic acid decomposes the waste water generated in purifying technique using a kind of suppression of the invention
The modified ABR reaction unit of acidification phenomenon processed is handled.Water inlet index before processing is COD>60000mg/L, BOD<
Ratio<0.12 7000mg/L, B/C, pH value 2~3, SS>1000mg/L.After anaerobic biochemical treatment, effluent index meets aerobic work
Skill requirement, i.e. COD≤5000mg/L, BOD>1800mg/L, B/C ratio>0.35, SS<200mg/L, pH value 6.5~8.5.
As shown, a kind of modified ABR reaction unit for inhibiting acidification phenomenon, is made of, each compartment packet 4 compartments
Include upward flow cell compartment and lower to stream cell compartment, upward flow cell compartment and lower the ratio between volume to stream cell compartment are 4:1, wherein in upward flow
Cell compartment is provided with floating stuffing, is stamped stationary grid in floating stuffing upper and lower.Head is equipped with stirring dress into stream cell compartment every lower
It sets, termination compartments are equipped with return pipe, remaining upper compartment is equipped with gas-guide tube, and bottom is equipped with mud-removing bucket.
Screen is mesh, and stainless steel material is rectangle or square, is fixed on pool wall.Filler is filled in two layers
Between screen, the reserved filling hole in upper layer installs rear enclosed to filler.The cell size of the screen is less than the minimum of floating stuffing
Size.The floating stuffing is tourmaline/polyurethane compounded mix: tourmaline content is 200kg/m3, density 0.65g/
cm3, filler is the square of side length 2cm, and porosity is 50~70%, and aperture is 2~4mm.
A kind of starting method for the modified ABR reaction unit inhibiting acidification phenomenon:
Using the anaerobic sludge of waste water treatment plant, supernatant is pumped after standing, obtaining concentration is, the thickened sludge of 40g/L,
Glucose is put into thickened sludge, is stirred, is stood, and the seed sludge in black is obtained.
It is 5000mg/L or so that sorbic acid raw wastewater, which is diluted to COD concentration, and pH value is adjusted to 6.8 with sodium hydroxide solution
Between~7.5, temperature is controlled at 25 DEG C or so.Then pass through intake pump for waste water into full ABR device, stop water inlet.
Above-mentioned seed sludge is seeded in each compartment of ABR device, guarantees reactor mean sludge concentration in 15g/L
Left and right.In seeded process, sludge reflux pump, return of waste water pump, blender are opened, guarantees hydraulic loading in 0.6m3/(m2·h)
More than, guarantee that filler comes into full contact with seed sludge.After 17~20d, biomembrane reaches 35g VSS/m on filler2Filler with
On, complete biofilm.After biofilm success, into domestication early period, intake pump is opened, sludge reflux pump is closed and is discharged back
Stream pump, control hydraulic detention time are for 24 hours.Sludge is carried out using the operation method that influent load is gradually increased domestication early period to tame and docile
Change, the water quality indicators such as daily periodic detection each compartment COD, VFA, pH, after stable, improve influent load, intake every time
Load improves ratio and is no more than 10%.The extension modulus of filler in each compartment of periodic detection.In starting 57d, tail in compartment every filling out
Biomembrane reaches 100g VSS/m on material2More than filler, illustrate that biomembrane is mature.Hereafter, continue to improve influent load, every time
Influent load improves ratio and is no more than 20%.In 135d, inlet COD concentration reaches raw water index.In 142d, it is discharged COD
Concentration is stablized in 5000mg/L or so, and removal rate is 90% or more, and reactor volume load reaches 56kg/ (m at this time3D) with
On, illustrate reactor start-up success.
Comparative example 1
As shown, conventional polyurethanes filler ABR reaction unit, is made of 4 compartments, each compartment includes upward flow lattice
Room and lower to stream cell compartment, upward flow cell compartment and lower the ratio between volume to stream cell compartment are 4:1, wherein are provided in upward flow cell compartment
Conventional polyurethanes filler is stamped stationary grid in filler upper and lower.Head every it is lower to stream cell compartment in be equipped with agitating device, end every
Room is equipped with return pipe, and each upper compartment is equipped with gas-guide tube, and except head is in addition to, remaining cell bottom is equipped with mud-removing bucket.
Screen is mesh, and stainless steel material is rectangle or square, is fixed on pool wall.Filler is filled in two layers
Between screen, the reserved filling hole in upper layer installs rear enclosed to filler.The cell size of the screen is less than the minimum ruler of filler
It is very little.The floating stuffing is conventional polyurethanes filler: density 0.47g/cm3, filler is the square of side length 2cm, hole
Rate is 50~70%, and aperture is 2~4mm.
Using the anaerobic sludge of waste water treatment plant, supernatant is pumped after standing, obtains the thickened sludge that concentration is 40g/L,
Glucose is put into thickened sludge, is stirred, is stood, and the seed sludge in black is obtained.
It is 5000mg/L or so that sorbic acid raw wastewater, which is diluted to COD concentration, and pH value is adjusted to 6.8 with sodium hydroxide solution
Between~7.5, temperature is controlled at 25 DEG C or so.Then pass through intake pump for waste water into full ABR device, stop water inlet.
Above-mentioned seed sludge is seeded in each compartment of ABR device, guarantees reactor mean sludge concentration in 15g/L
Left and right.In seeded process, sludge reflux pump, return of waste water pump, blender are opened, guarantees hydraulic loading in 0.6m3/(m2·h)
More than, guarantee that filler comes into full contact with seed sludge.After 25~28d, biomembrane reaches 35g VSS/m on filler2Filler with
On, complete biofilm.After biofilm success, into domestication early period, intake pump is opened, sludge reflux pump is closed and is discharged back
Stream pump, control hydraulic detention time are for 24 hours.Sludge is carried out using the operation method that influent load is gradually increased domestication early period to tame and docile
Change, the water quality indicators such as daily periodic detection each compartment COD, VFA, pH, when VFA content is more than 500mg/L or pH value in reactor
Lower than 6.0, system need to add quantitative sodium carbonate.After stable, influent load is improved, each influent load improves ratio
No more than 10%.The extension modulus of filler in each compartment of periodic detection.In starting 95d, tail is every biomembrane reaches on filler in compartment
To 100g VSS/m2More than filler, illustrate that biomembrane is mature.Hereafter, continue to improve influent load, each influent load improves
Ratio is no more than 20%.In 163d, inlet COD concentration reaches raw water index.In 175d, effluent COD concentration is stablized
5000mg/L or so, removal rate is 90% or more, and reactor volume load reaches 56kg/ (m at this time3D) more than, illustrate to react
Device starts successfully.
Comparative example 2
As shown, tradition ABR reaction unit, is made of 4 compartments, each compartment includes upward flow cell compartment and lower to stream
Cell compartment, upward flow cell compartment and lower the ratio between volume to stream cell compartment are 4:1, and termination compartments are equipped with return pipe, and upper compartment is equipped with and leads
Tracheae.
Using the anaerobic sludge of waste water treatment plant, supernatant is pumped after standing, obtains the thickened sludge that concentration is 40g/L,
Glucose is put into thickened sludge, is stirred, is stood, and the seed sludge in black is obtained.
Above-mentioned seed sludge is seeded in each compartment of ABR device, dosage is each compartment dischargeable capacity
50%.It is 5000mg/L or so that sorbic acid raw wastewater, which is diluted to COD concentration, pH value is adjusted to 6.8 with sodium hydroxide solution~
Between 7.5, temperature is controlled at 25 DEG C or so.Intake pump is opened, by ABR device into full waste water, is then shut off intake pump, is opened useless
Water reflux pump controls hydraulic loading in 0.5m3/(m2H), sludgd deposition is prevented.In 35d, waste water COD drops to 2000mg/L
Hereinafter, opening intake pump, effluent recycling pump is closed, controls HRT for 24 hours.The water such as daily periodic detection each compartment COD, VFA, pH
Matter index carries out sludge acclimatization using the operation method that influent load is gradually increased, water inlet is negative every time after stable effluent quality
Lotus improves ratio and is no more than 10%.When VFA content is more than 500mg/L or pH value lower than 6.0 in reactor, system need to add quantitative
Sodium carbonate.In 175d, inlet COD concentration reaches raw water index.In 192d, effluent COD concentration is stablized in 7000mg/L
Left and right, removal rate is 90% or more, and reactor volume load reaches 56kg/ (m at this time3D) more than, illustrate reactor start-up at
Function.
Three kinds of different reactors start Contrast on effect table
Embodiment 2
The molasses alcohol waste water in certain sugar refinery using a kind of inhibition acidification phenomenon of the invention modified ABR reaction unit into
Row processing.Experimental water is the molasses alcohol waste water in Guangxi sugar refinery, and main water quality parameter see the table below.
Molasses alcohol waste water property list
As shown, a kind of modified ABR reaction unit for inhibiting acidification phenomenon, is made of, each compartment packet 4 compartments
Include upward flow cell compartment and lower to stream cell compartment, upward flow cell compartment and lower the ratio between volume to stream cell compartment are 4:1, wherein in upward flow
Cell compartment is provided with floating stuffing, is stamped stationary grid in floating stuffing upper and lower.Head is equipped with stirring dress into stream cell compartment every lower
It sets, termination compartments are equipped with return pipe, and each upper compartment is equipped with gas-guide tube, and except head is in addition to, remaining cell bottom is equipped with mud-removing bucket.
Screen is mesh, and stainless steel material is rectangle or square, is fixed on pool wall.Filler is filled in two layers
Between screen, the reserved filling hole in upper layer installs rear enclosed to filler.The cell size of the screen is less than the minimum of floating stuffing
Size.The floating stuffing is tourmaline/polyurethane compounded mix: tourmaline content is 200kg/m3, density 0.65g/
cm3, filler is the square of side length 2cm, and porosity is 50~70%, and aperture is 2~4mm.
A kind of starting method for the modified ABR reaction unit inhibiting acidification phenomenon:
Using the anaerobic sludge of waste water treatment plant, supernatant is pumped after standing, obtaining concentration is, the thickened sludge of 40g/L,
Glucose is put into thickened sludge, is stirred, is stood, and the seed sludge in black is obtained.
It is 5000mg/L or so that molasses-spirit raw wastewater, which is diluted to COD concentration, and pH value is adjusted to sodium hydroxide solution
Between 6.8~7.5, temperature is controlled at 25 DEG C or so.Then pass through intake pump for waste water into full ABR device, stop water inlet.
Above-mentioned seed sludge is seeded in each compartment of ABR device, guarantees reactor mean sludge concentration in 15g/L
Left and right.In seeded process, sludge reflux pump, return of waste water pump, blender are opened, guarantees hydraulic loading in 0.6m3/(m2·h)
More than, guarantee that filler comes into full contact with seed sludge.After 19d, biomembrane reaches 35g VSS/m on filler2It is more than filler, complete
At biofilm.After biofilm success, into domestication early period, intake pump is opened, closes sludge reflux pump and effluent recycling pump,
Control hydraulic detention time is 48h.Domestication early period carries out sludge acclimatization using the operation method that influent load is gradually increased, daily
The water quality indicators such as periodic detection each compartment COD, VFA, pH improve influent load after stable, and each influent load improves
Ratio is no more than 10%.The extension modulus of filler in each compartment of periodic detection.In starting 48d, tail every in compartment on filler it is biological
Film reaches 100g VSS/m2More than filler, illustrate that biomembrane is mature.Hereafter, continue to improve influent load, each influent load
Raising ratio is no more than 20%.In 155d, inlet COD concentration reaches raw water index.In 169d, effluent COD concentration is stablized
In 5000mg/L or so, removal rate is 90% or more, and reactor volume load reaches 38kg/ (m at this time3D) more than, illustrate anti-
Device is answered to start successfully.
Comparative example 1
As shown, conventional polyurethanes filler ABR reaction unit, is made of 4 compartments, each compartment includes upward flow lattice
Room and lower to stream cell compartment, upward flow cell compartment and lower the ratio between volume to stream cell compartment are 4:1, wherein are provided in upward flow cell compartment
Conventional polyurethanes filler is stamped stationary grid in filler upper and lower.Head every it is lower to stream cell compartment in be equipped with agitating device, end every
Room is equipped with return pipe, and each upper compartment is equipped with gas-guide tube, and except head is in addition to, remaining cell bottom is equipped with mud-removing bucket.
Screen is mesh, and stainless steel material is rectangle or square, is fixed on pool wall.Filler is filled in two layers
Between screen, the reserved filling hole in upper layer installs rear enclosed to filler.The cell size of the screen is less than the minimum ruler of filler
It is very little.The floating stuffing is conventional polyurethanes filler: density 0.47g/cm3, filler is the square of side length 2cm, hole
Rate is 50~70%, and aperture is 2~4mm.
Using the anaerobic sludge of waste water treatment plant, supernatant is pumped after standing, obtains the thickened sludge that concentration is 40g/L,
Glucose is put into thickened sludge, is stirred, is stood, and the seed sludge in black is obtained.
It is 5000mg/L or so that molasses-spirit raw wastewater, which is diluted to COD concentration, and pH value is adjusted to sodium hydroxide solution
Between 6.8~7.5, temperature is controlled at 25 DEG C or so.Then pass through intake pump for waste water into full ABR device, stop water inlet.
Above-mentioned seed sludge is seeded in each compartment of ABR device, guarantees reactor mean sludge concentration in 15g/L
Left and right.In seeded process, sludge reflux pump, return of waste water pump, blender are opened, guarantees hydraulic loading in 0.6m3/(m2·h)
More than, guarantee that filler comes into full contact with seed sludge.After 28d, biomembrane reaches 35g VSS/m on filler2It is more than filler, complete
At biofilm.After biofilm success, into domestication early period, intake pump is opened, closes sludge reflux pump and effluent recycling pump,
Control hydraulic detention time is 48h.Domestication early period carries out sludge acclimatization using the operation method that influent load is gradually increased, daily
The water quality indicators such as periodic detection each compartment COD, VFA, pH, when VFA content is more than 500mg/L or pH value lower than 6.0 in reactor,
System need to add quantitative sodium carbonate.After stable, influent load is improved, each influent load improves ratio and is no more than
10%.The extension modulus of filler in each compartment of periodic detection.In starting 63d, tail is every biomembrane reaches 100g on filler in compartment
VSS/m2More than filler, illustrate that biomembrane is mature.Hereafter, continue to improve influent load, each influent load improves ratio not
More than 20%.In 168d, inlet COD concentration reaches raw water index.In 182d, effluent COD concentration is stablized in 5000mg/L
Left and right, removal rate is 90% or more, and reactor volume load reaches 38kg/ (m at this time3D) more than, illustrate reactor start-up at
Function.
Comparative example 2
As shown, tradition ABR reaction unit, is made of 4 compartments, each compartment includes upward flow cell compartment and lower to stream
Cell compartment, upward flow cell compartment and lower the ratio between volume to stream cell compartment are 4:1, and termination compartments are equipped with return pipe, and upper compartment is equipped with and leads
Tracheae.
Using the anaerobic sludge of waste water treatment plant, supernatant is pumped after standing, obtains the thickened sludge that concentration is 40g/L,
Glucose is put into thickened sludge, is stirred, is stood, and the seed sludge in black is obtained.
Above-mentioned seed sludge is seeded in each compartment of ABR device, dosage is each compartment dischargeable capacity
50%.It is 5000mg/L or so that molasses-spirit raw wastewater, which is diluted to COD concentration, and pH value is adjusted to 6.8 with sodium hydroxide solution
Between~7.5, temperature is controlled at 25 DEG C or so.It opens intake pump and is then shut off intake pump by ABR device into full waste water, open
Return of waste water pump controls hydraulic loading in 0.5m3/(m2H), sludgd deposition is prevented.In 35d, waste water COD drops to 2000mg/
For L hereinafter, opening intake pump, closing effluent recycling pump controls HRT for 24 hours.The water such as daily periodic detection each compartment COD, VFA, pH
Matter index carries out sludge acclimatization using the operation method that influent load is gradually increased, water inlet is negative every time after stable effluent quality
Lotus improves ratio and is no more than 10%.When VFA content is more than 500mg/L or pH value lower than 6.0 in reactor, system need to add quantitative
Sodium carbonate.In 197d, inlet COD concentration reaches raw water index.In 214d, effluent COD concentration is stablized in 5000mg/L
Left and right, removal rate is 90% or more, and reactor volume load reaches 38kg/ (m at this time3D) more than, illustrate reactor start-up at
Function.
Three kinds of different reactors start Contrast on effect table
Claims (6)
1. a kind of modified ABR reaction unit for inhibiting acidification phenomenon, which is made of 4~6 compartments (2), each every
Room includes lower to stream cell compartment (3) and upward flow cell compartment (4), upward flow cell compartment and it is lower to the ratio between volume of stream cell compartment be 3~5:1,
Wherein, floating stuffing (11) are provided in upward flow cell compartment, are equipped with stationary grid (5) in floating stuffing upper and lower；Head every it is lower to
It flows in cell compartment and is equipped with agitating device (6), termination compartments top is equipped with effluent recycling pipe (7)；Each upper compartment is equipped with gas-guide tube
(10), except head is in addition to, other cell bottoms are equipped with mud-removing bucket (12) and mud return line (8).
2. a kind of modified ABR reaction unit for inhibiting acidification phenomenon according to claim 1, it is characterised in that: described
Floating stuffing (11) is tourmaline/polyurethane compounded mix: 1) tourmaline content is 100~300kg/m3；2) density is 0.58
~0.77g/cm3；3) filler is the square of 2~5cm of side length, and porosity is 50~70%, and aperture is 2~4mm.
3. a kind of modified ABR reaction unit for inhibiting acidification phenomenon according to claim 1, it is characterised in that: described outstanding
The dosage of floating filler (11) accounts for the 50~70% of upward flow cell compartment dischargeable capacity.
4. a kind of modified ABR reaction unit for inhibiting acidification phenomenon according to claim 1, it is characterised in that: head is under
Agitating device (6) are equipped with to flow chamber bottom, except head is in addition to, remaining cell bottom is equipped with mud-removing bucket (12) and mud return line (8).
5. a kind of modified ABR reaction unit for inhibiting acidification phenomenon according to claim 1, it is characterised in that: in end
Upward flow cell compartment top is equipped with effluent recycling pipe (7), flows back into device head every lower to stream cell compartment (3).
6. a kind of modified ABR reaction unit for inhibiting acidification phenomenon according to claim 2, it is characterised in that: described
Tourmaline partial size is 2~50 μm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111470625A (en) * | 2020-05-06 | 2020-07-31 | 北京工业大学 | Preparation and application of anaerobic hydrolysis acidification composite bacteria embedded bioactive filler |
| CN112062415A (en) * | 2020-09-16 | 2020-12-11 | 内蒙古鑫水源科技有限公司 | Domestic sewage treatment system and method for treating domestic sewage by using same |
| CN114804518A (en) * | 2022-04-18 | 2022-07-29 | 安徽华骐环保科技股份有限公司 | One-stop rural decentralized sewage treatment equipment and treatment method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205575757U (en) * | 2016-04-12 | 2016-09-14 | 哈尔滨商业大学 | Denitrogenation processing apparatus of high ammonia -nitrogen concentration waste water |
| CN208104026U (en) * | 2017-12-26 | 2018-11-16 | 中冶华天包头设计研究总院有限公司 | Anaerobic baffled reactor |
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2019
- 2019-01-26 CN CN201910076356.6A patent/CN109809557B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205575757U (en) * | 2016-04-12 | 2016-09-14 | 哈尔滨商业大学 | Denitrogenation processing apparatus of high ammonia -nitrogen concentration waste water |
| CN208104026U (en) * | 2017-12-26 | 2018-11-16 | 中冶华天包头设计研究总院有限公司 | Anaerobic baffled reactor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111470625A (en) * | 2020-05-06 | 2020-07-31 | 北京工业大学 | Preparation and application of anaerobic hydrolysis acidification composite bacteria embedded bioactive filler |
| CN111470625B (en) * | 2020-05-06 | 2022-03-29 | 北京工业大学 | Preparation and application of anaerobic hydrolysis acidification composite bacteria embedded bioactive filler |
| CN112062415A (en) * | 2020-09-16 | 2020-12-11 | 内蒙古鑫水源科技有限公司 | Domestic sewage treatment system and method for treating domestic sewage by using same |
| CN114804518A (en) * | 2022-04-18 | 2022-07-29 | 安徽华骐环保科技股份有限公司 | One-stop rural decentralized sewage treatment equipment and treatment method thereof |
| CN114804518B (en) * | 2022-04-18 | 2024-02-23 | 安徽华骐环保科技股份有限公司 | One-stop rural decentralized sewage treatment equipment and treatment method thereof |
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