CN207391103U - A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages - Google Patents
A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages Download PDFInfo
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- CN207391103U CN207391103U CN201721419238.3U CN201721419238U CN207391103U CN 207391103 U CN207391103 U CN 207391103U CN 201721419238 U CN201721419238 U CN 201721419238U CN 207391103 U CN207391103 U CN 207391103U
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- nitrogen ratio
- filter membrane
- low carbon
- carbon source
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- 238000000034 method Methods 0.000 title claims abstract description 78
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- 230000008569 process Effects 0.000 title claims abstract description 58
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- 239000010802 sludge Substances 0.000 claims abstract description 78
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- 238000011081 inoculation Methods 0.000 abstract description 24
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- 229910052698 phosphorus Inorganic materials 0.000 abstract description 19
- 239000011574 phosphorus Substances 0.000 abstract description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 16
- 239000000377 silicon dioxide Substances 0.000 abstract description 16
- 230000015572 biosynthetic process Effects 0.000 abstract description 13
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- 238000000926 separation method Methods 0.000 abstract description 3
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Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages, the device includes reactor, and the reactor is equipped with skimmer device, filter membrane is set on the inside of reactor, outside sets up aeration tube and sludge pipe separately in reactor bottom, and water pipe connection filter membrane is set out in reactor.When carrying out low carbon-nitrogen ratio sewage processing using the device, by removing phosphorus sludge, prepared by solid carbon source, solid carbon source adds carry out inoculation membrane formation, control relevant parameter progress sewage disposal and etc., and discharged after filter membrane carries out mud-water separation, skimmer device is used to remove scum silica frost.The device of the utility model improvement MBBR process low carbon-nitrogen ratio sewages can periodically exclude carbon source residue by skimmer device, by filter membrane carbon source residue and biomass can effectively be controlled to overflow, more using raising to low carbon-nitrogen ratio sewage denitrification ability, and Nitrogen/Phosphorus Removal, there is high application value.
Description
Technical field：
The utility model belongs to technical field of sewage, and in particular to a kind of improvement MBBR process low ratio of carbon to ammonium is dirty
The device of water.
Background technology：
With social development, the dietary structure and living-pattern preservation of people, the nitrogen into the sanitary sewage of sewage plant
Content constantly increase, and COD concentration constantly reduces, the sanitary sewage low ratio of carbon to ammonium trend getting worse in China.Raw water it is low
Carbon-nitrogen ratio causes nitrification and denitrification reaction in sewage disposal to be difficult to reach balance, influences total nitrogen removal effect, denitrogenation and dephosphorization
Process influences phosphor-removing effect there are carbon source competition.
Moving bed biofilm reactor (MBBR) is on the basis of technology of biological membrane, is given birth to adhering on floating stuffing carrier
A kind of combined film biological wastewater treatment device that long biomembrane replaces activated sludge and formed.Its biomembrane is as a kind of spy
Different germs collect form can form stable aerobic zone, anoxic zone/anaerobic zone, so as to fulfill in biology on biomembrane
Film surface nitrifies, internal denitrifying synchronous nitration and denitrification (SND) process.
Siolunda sewage treatment plants of Sweden using MBBR as anti-nitration reaction pond, and persistently add liquid carbon source ethyl alcohol and
Methanol, when water temperature is 16 DEG C, the denitrification rate of ethyl alcohol is about 2.5gN/m2D, the maximum Nitrification rate of methanol are about
2.0gN/m2D is (see document Water Science＆Technology, 1998,38 (1)：31-38).It can be seen that MBBR works
Skill need to add additional carbon for the processing of the sewage of low ratio of carbon to ammonium.
Additional carbon generally understands the liquid carbon source such as prioritizing selection ethyl alcohol, methanol, sodium acetate, glucose.However these liquid
Carbon source dosage in adding is difficult to control, and is easily influenced the water quality of water outlet, is caused secondary pollution (see document, Applied
Microbiology and Biotechnology.1996,46 (1)：92-97.).Solid carbon source both may be used compared with liquid carbon source
To provide carbon source, and can be as the carrier of biological attachment.It is long with service life, it is not required to repeatedly add, fast quick-release can be avoided
The advantage of secondary pollution caused by carbon.
At present there are mainly two types of the solid carbon sources of most study, biodegradable polymers material, such as PLA, PBS, PCL
(see document Polymer degradation and Stability.2002,76 (2)：321-327.) and natural fiber material
Material, such as straw, peanut shell, corncob etc. are (see document, China Environmental Science, 2011,31 (5)：748-754.).Li Xiu is gorgeous et al.
A kind of biodegradable sustained release carbon material of invention and preparation method thereof, is made in invention using biodegradable polymers (BDPs)
For additional solid carbon source, increase rate nitric efficiency (see patent CN2016101603753,2016.03.21).The human hairs such as Hao Ruixia
Bright one kind is using starch and polyvinyl alcohol (PVA) as the preparation method of the slow release carbon source filtrate of base material, for low ratio of carbon to ammonium
In sewage disposal, the denitrification denitrogenation effect of slow release carbon source filtrate is preferable, while water outlet COD can reach wanting for reclaimed water reuse
It asks (see patent CN1039644565A, 2014.8.6).Although biodegradable polymers material denitrification rate is higher,
Its use cost is higher, seriously limits its use scope in Practical Project.
Natural cellulosic materials have derives from a wealth of sources, easily obtain, cheap, easily biological-degradable, it is nontoxic the advantages that.Using
Native cellulose class material vinasse slowly discharge organic carbon work by cassava grain stillage as additional solid carbon source in sewage disposal
For the denitrifying carbon source of microorganism, not only realize efficient denitrification and also avoid the wasting of resources, alleviate the pollution to environment.
(see patent CN102826649,2012.07.24).Using reed as filler and bio-carrier, in biological fluidized bed or fixation
Treatment of Organic Wastewater is carried out in bed, due to its large specific surface area, for proportion close to water, the microbial biomass of surface attachment is big, makes
Total nitrogen in water outlet is obtained, total phosphorus, organic matter and ammonia-nitrogen content are satisfied by national grade one discharge standard.(see patent CN103214106A,
2013.7.24).Use the solid carbon being combined with rice husk powder, corncob powder, stalk powder, straw powder and rice bran
Source handles the sanitary sewage of low ratio of carbon to ammonium for additional carbon, and sewage only needs 2~5h from pre-denitration pond is flowed into outflow sedimentation basin, i.e.,
It can make total nitrogen content≤10mg/L of water outlet, total phosphorus content≤5mg/L.(see patent CN104003520A, 2014.8.27).It adopts
The complex solid carbon source prepared with Lychee Seed and natural polysaccharide substance Glucomannan handles breeding wastewater, nitrate nitrogen removal
Rate is i.e. up to 100%, and without nitrite accumulation (see patent CN105502650A, 2016.4.20).
More than invention makes up the defects of carbon source is insufficient in low ratio of carbon to ammonium water inlet by way of adding solid carbon source, so as to carry
High nitric efficiency.But influence of the solid carbon source residue to effluent quality in water treatment procedure is not considered, is not considered to phosphorus yet
Synchronous removal problem.
Utility model content：
The purpose of this utility model is to overcome the deficiencies of the prior art and provide a kind of improvement MBBR process low-carbon and nitrogens
Than the device of sewage.The device water outlet can effectively control carbon source residue using membrane filtration patterns such as plate membrane or hollow-fibre membranes
It is overflowed with biomass, and skimmer device is set to exclude the carbon source residue to float, culture domestication denitrification dephosphorization sludge seeding is in anti-
Device is answered, system can be made to obtain preferable denitrogenation dephosphorizing function, hanging in MBBR techniques is substituted using solid carbon source with reference to the device
Floating filler, has both two kinds of functions of carbon source and bio-carrier, reinforcement process is to the denitrification ability of low carbon-nitrogen ratio sewage.
To achieve the above object, the utility model uses following technical scheme：
A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages, the device include reactor, the reactor
Equipped with skimmer device, wherein：
Water inlet pipe is equipped with below the sidewall of reactor, sludge pipe is equipped on the outside of the reactor bottom, it is described
Aeration tube is equipped on the inside of reactor bottom；
One side is equipped with filter membrane in the reactor, and the skimmer device is arranged on above reactor；
Outlet pipe is equipped in the reactor, the outlet pipe connects filter membrane in reactor.
The skimmer device includes skimming plate and skimming plate slideway, and the skimming plate is arranged in skimming slideway.
The skimming plate slideway end is equipped with storage slag case.
The skimming plate can reciprocatingly slide in skimming plate slideway.
Shown filter membrane is plate membrane or hollow-fibre membrane.
The sludge pipe is equipped with valve.
Self priming pump and backwashing pump are respectively equipped on the outlet pipe.
The aeration tube is arranged side by side in reactor bottom.
The aeration tube is connected with air blower.
A kind of device using improvement MBBR process low carbon-nitrogen ratio sewages, the method for handling low carbon-nitrogen ratio sewage, bag
Include following steps：
(1) domestication and culture of denitrification dephosphorization sludge：
Culturing sludge is carried out using culture solution, by sludge concentration culture to more than 8000mg/L, water outlet TP stablizes 0.3~
0.7mg/L, and COD, TN, TP removal rate stabilization complete the domestication and culture of denitrification dephosphorization sludge 78~82%, are formed anti-
Nitrification and phosphorus removal sludge；
(2) preparation and pretreatment of solid carbon source：
Solid carbon source is taken, it is spare after being handled；
(3) inoculation membrane formation of solid carbon source：
In mass ratio, solid carbon source: solid carbon source is added to improvement by sewage=(1: 50)~(1: 100) in reactor
In the device of MBBR process low carbon-nitrogen ratio sewages, by volume, the denitrification of sewage volume 8~12% in reaction of inoculation device
Except phosphorus sludge carries out biofilm, the biofilm time is 10~15d；
(4) device is started and run：
The dissolved oxygen in the device of improvement MBBR process low carbon-nitrogen ratio sewages is controlled as 0.8~2mg/L, temperature 20
~30 DEG C, pH is 6.0~8.0, carries out sewage disposal, discharges, and periodically turn on after hollow-fibre membrane mud-water separation after processing
Skimmer device removes scum silica frost.
In the step (1), sludge is sewage plant secondary settling tank returned sludge.
In the step (1), the domestication incubation of denitrification dephosphorization sludge is：Take secondary settling tank returned sludge, bored exposure
After 3d, the domestication culture of denitrification dephosphorization sludge is completed, contains denitrifying phosphorus removing bacteria in the denitrification dephosphorization sludge,
In：
The training method is the alternate training method of anaerobic-aerobic；
COD, nitrogen, phosphorus are configured by glucose, sodium nitrate, potassium dihydrogen phosphate in the culture solution, wherein COD：60
~100mg/L, TN：15~25mg/L, TP：2.5~5mg/L, additive amount proportioning are COD: TN: TP=(4~5): 1: (0.2~
0.4)。
In the step (1), the time ratio of anaerobism and aerobic culture is 1: 2.
In the step (2), solid carbon source be biodegradable high molecular polymer or natural cellulosic materials,
In：
The Biodegradable high-molecular polymer is PLA, PBS or PCL；The natural cellulosic materials are corn
Core, rice straw or soybean peel；
In the step (2), the Biodegradable high-molecular polymer treatment mode is：
It is a diameter of 0.1~0.3cm by Biodegradable high-molecular polymer treatment, blocks the roundlet that length is 1~2cm
After cylindrical particle, it is not required to be pre-processed, is added directly in reactor；
The natural cellulosic materials processing mode is：
Natural cellulosic materials are broken into 1~2 centimetre of bulk, the floating ash of washing removal twice and impurity, is dried for standby, makes
With preceding mass fraction is used to be pre-processed for 1~3% 20~28h of NaOH immersions.
In the step (2), NaOH mass fractions are 1.5%.
In the step (3), in mass ratio, solid carbon source: sewage=1 in reactor: 80.
In the step (4), the dissolved oxygen in the device of MBBR process low carbon-nitrogen ratio sewages is improved as 1mg/L,
Temperature is 25 DEG C, PH 7.5.
In the step (4), in sewage disposal process, transmembrane pressure is monitored, filter membrane is backwashed or film
Cleaning, wherein：
When transmembrane pressure is more than 50kPa, filter membrane is backwashed, controls the fouling membrane of filter membrane, shown is anti-
Backwashing manner is washed for online air recoil or online clear water backwash；
When transmembrane pressure is more than 70kPa or runs more than 3 months, Membrane cleaning, shown Membrane cleaning are carried out to filter membrane
Mode is to carry out offline dipping cleaning using chemical agent.
The water outlet obtained after being handled by the way of described, TN removal rates are that more than 85%, TP removal rates are more than 83%,
COD removal rates are more than 70%.
Using the device of the utility model, with reference to above-mentioned sewage water treatment method, cellulose-degrading bacteria will be in solid carbon source
Cellulose, hemicellulose and lignin degradation are carbohydrate；Denitrifying bacteria utilizes the glucide that solid carbon source slowly discharges,
Under the action of relevant enzyme, it is respectively nitrogen by nitrate or nitrate reductase, achievees the purpose that denitrogenation；Denitrifying phosphorus removing bacteria with
Dissolved oxygen in water absorbs the phosphorus in sewage for electron acceptor, is stored in the cell in the form of polyphosphate, reaches dephosphorization
Purpose.
The beneficial effects of the utility model：
(1) the utility model improvement MBBR process low carbon-nitrogen ratio sewages device water outlet using plate membrane or in
Empty fiber membrane filters, and has good solid-liquid separation effect, and carbon source residue and biomass can effectively be controlled to overflow；
(2) skimmer device in the device of the improvement MBBR process low carbon-nitrogen ratio sewages of the utility model, scum board
The carbon source residue of floating can be excluded in sewage disposal process, and scum silica frost is collected by ash pit, it is easy to use；
(3) sewage disposal, energy are carried out using the device of the improvement MBBR process low carbon-nitrogen ratio sewages of the utility model
It is enough to improve denitrification effect simultaneously in the utilization of resources for realizing natural cellulosic materials (corncob, rice straw)；
(4) sewage disposal is carried out using the device of the improvement MBBR process low carbon-nitrogen ratio sewages of the utility model, carried
The additional solid carbon source that two classes are excellent is supplied, you can biological degradation polyalcohol and native cellulose class substance utilize this two classes object
Matter can not only be used as carbon source to discharge organic carbon as additional solid carbon source, but also can be used as bio-carrier, and this two classes substance
It releases that carbon performance is good, the release organic carbon of high-efficient and lasting can be kept, solve the problems, such as repeatedly to add additional carbon；In addition, through
It crosses it is demonstrated experimentally that microorganism releases carbon with ability of regulation and control to solid carbon source, secondary pollution will not be caused.
Description of the drawings：
Fig. 1 is the installation drawing front view that the utility model improves MBBR process low carbon-nitrogen ratio sewages；
Fig. 2 is the device top view that the utility model improves MBBR process low carbon-nitrogen ratio sewages, wherein：
1- water inlet pipes, 2- storage slag casees, 3- skimming plate slideways, 4- skimming plates, 5- outlet pipes, 6- self priming pumps, 7- filter membranes, 8-
Sludge pipe, 9- aeration tubes, 10- air blowers, 11- valves, 12- backwashing pumps, A- denitrification dephosphorization sludge, B- solid carbon sources.
Specific embodiment：
With reference to embodiment, the utility model is described in further detail.
In example 1 below~7：
The incubation of sewage plant secondary settling tank returned sludge is：
Anaerobic-aerobic alternate culture, anaerobism and aerobic culture carry out sewage plant secondary settling tank returned sludge using culture solution
Time ratio for 1: 2, after bored exposure 3d, by sewage plant secondary settling tank returned sludge concentration culture to more than 8000mg/L, water outlet TP is steady
Be scheduled on 0.3~0.7mg/L, and COD, TN, TP removal rate stabilization is 78~82%, complete the domestication of denitrification dephosphorization sludge A with
Culture；
COD, nitrogen, phosphorus are configured by glucose, sodium nitrate, potassium dihydrogen phosphate in the culture solution of use, wherein COD：60
~100mg/L, TN：15~25mg/L, TP：2.5~5mg/L, additive amount proportioning are COD: TN: TP=(4~5): 1: (0.2~
0.4)。
Embodiment 1
A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages, front view is as shown in Figure 1, top view such as Fig. 2
Shown, which includes reactor, and the reactor is equipped with skimmer device, wherein：
The skimmer device is arranged on skimming plate slideway 3 including the skimming plate 4 described in skimming plate 4 and skimming plate slideway 3
Interior, the skimming plate 4 can reciprocatingly slide in skimming plate slideway 3, and 3 end of skimming plate slideway is equipped with storage slag case 2；
The skimmer device is arranged on above reactor；
Water inlet pipe 1 is equipped with below the sidewall of reactor, sludge pipe 8 is equipped on the outside of the reactor bottom, it is described
Sludge pipe 8 be equipped with valve 11, aeration tube 9 is equipped on the inside of the reactor bottom, the aeration tube 9 is at reactor bottom
Portion is arranged side by side, and the aeration tube 9 is connected with air blower 10；
One side is equipped with filter membrane 7 in the reactor, which is plate membrane；
Outlet pipe 5 is equipped in the reactor, the outlet pipe 5 is connected on filter membrane 7, the outlet pipe 5
6 negative-pressure ward water outlet of self priming pump is equipped with, the outlet pipe 5 is equipped with backwashing pump 12 for carrying out online backwashing, institute
The backwashing pump 12 stated is air pump.
A kind of device using improvement MBBR process low carbon-nitrogen ratio sewages, the method for handling low carbon-nitrogen ratio sewage, bag
Include following steps：
In the present embodiment, sewage quality of intaking：90~120mg/L of COD, 25~35mg/L of TN, 2~4mg/L of TP；
(1) domestication and culture of denitrification dephosphorization sludge A：
Sewage plant secondary settling tank returned sludge is cultivated using culture solution, forms the denitrification of sludge concentration 8000mg/L
Except phosphorus sludge A；
(2) preparation and pretreatment of solid carbon source B：
Corncob is taken, corncob is broken into 1~2 centimetre of bulk, the floating ash of washing removal twice and impurity, is dried for standby,
Using it is preceding use mass fraction for 1.5% NaOH impregnate 20h after as solid carbon source B, it is spare；
(3) inoculation membrane formation of solid carbon source B：
In mass ratio, solid carbon source B: solid carbon source B is added to improvement MBBR techniques by sewage=(1: 50) in reactor
In the device for handling low carbon-nitrogen ratio sewage, by volume, the denitrification dephosphorization sludge A of sewage volume 12% in reaction of inoculation device,
The biofilm time is 12d；
(4) device is started and run：
Adjust water inlet C/N be 3, control improve MBBR process low carbon-nitrogen ratio sewages device in dissolved oxygen be
0.8mg/L, temperature are 20 DEG C, pH 6.0, carry out sewage disposal, the device fortune of improvement MBBR process low carbon-nitrogen ratio sewages
Water outlet and dross mixture are obtained after row 16d, water outlet is discharged by outlet pipe 5 after filter membrane 7, and periodically turns on skimming dress
It puts, slides on skimming plate slideway 3 to remove scum silica frost by skimming plate 4, and pass through and store slag case 2 and collect scum silica frost, and at sewage
During reason, monitor transmembrane pressure, when transmembrane pressure be more than 50kPa when, filter membrane 7 is carried out using air pump online air/
Clear water backwashes, and controls the fouling membrane of filter membrane；When device runs more than 3 months, filter membrane 7 is carried out using chemical agent
Offline dipping cleaning, tests water outlet, water outlet TN 3.88~4.8mg/L of concentration, and removal rate is 85~86%, COD concentration
27~30mg/L, removal rate are 70~75%, and water outlet TP 0.3~0.45mg/L of concentration, removal rate is 83~88%.Meet cities and towns
Sewage plant level-one emission standard A.
Comparative example 1
In the present embodiment, using same 1 same apparatus of embodiment, denitrification dephosphorization sludge is not inoculated with, inoculation active is dirty
Mud adds same solid carbon source, carries out sewage disposal, remaining parameter after the completion of sewage disposal, carries out water outlet with embodiment 1
Test, water outlet TN 6.2~7.5mg/L of concentration, removal rate are 75~78.5%, COD, 60~65mg/L of concentration, removal rate for 33~
46%, water outlet TP concentration are 1.5~2.2mg/L, and removal rate is 25%~33.3%.
Embodiment 2
A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages, front view is as shown in Figure 1, top view such as Fig. 2
Shown, which includes reactor, and the reactor is equipped with skimmer device, wherein：
The skimmer device includes skimming plate 4 and skimming plate slideway 3, and the skimming plate 4 is arranged on skimming plate slideway 3
Interior, the skimming plate 4 can reciprocatingly slide in skimming plate slideway 3, and 3 end of skimming plate slideway is equipped with storage slag case 2,
The skimmer device is arranged on above reactor；
Water inlet pipe 1 is equipped with below the sidewall of reactor, sludge pipe 8 is equipped on the outside of the reactor bottom, it is described
Sludge pipe 8 be equipped with valve 11, aeration tube 9 is equipped on the inside of the reactor bottom, the aeration tube 9 is at reactor bottom
Portion is arranged side by side, and the aeration tube 9 is connected with air blower 10；
One side is equipped with filter membrane 7 in the reactor, and the filter membrane 7 is plate membrane；
Outlet pipe 5 is equipped in the reactor, the outlet pipe 5 is connected on filter membrane 7, the outlet pipe 5
6 negative-pressure ward water outlet of self priming pump is equipped with, the outlet pipe 5 is equipped with backwashing pump 12 and carries out online backwashing, described
Backwashing pump 12 is air pump.
A kind of device using improvement MBBR process low carbon-nitrogen ratio sewages, the method for handling low carbon-nitrogen ratio sewage, bag
Include following steps：
In the present embodiment, sewage quality of intaking：90~120mg/L of COD, 2~4mg/L of TN 25~35mg/L, TP；
(1) domestication and culture of denitrification dephosphorization sludge A：
Sewage plant secondary settling tank returned sludge is cultivated using culture solution, forms the denitrification of sludge concentration 8000mg/L
Except phosphorus sludge A；
(2) preparation and pretreatment of solid carbon source B：
Corncob is taken, corncob is broken into 1~2 centimetre of bulk, the floating ash of washing removal twice and impurity, is dried for standby,
Using preceding mass fraction is used to be impregnated for 1.5% NaOH for 24 hours afterwards as solid carbon source B, it is spare；
(3) inoculation membrane formation of solid carbon source B：
In mass ratio, solid carbon source B: solid carbon source B is added to improvement MBBR techniques by sewage=(1: 80) in reactor
In the device for handling low carbon-nitrogen ratio sewage, by volume, the denitrification dephosphorization sludge A of sewage volume 10% in reaction of inoculation device,
The biofilm time is 10d；
(4) device is started and run：
It is 5 to adjust water inlet C/N, and it is 1mg/ to control the dissolved oxygen in the device of improvement MBBR process low carbon-nitrogen ratio sewages
L, temperature are 28 DEG C, pH 7, carry out sewage disposal, are obtained after the device operation 12d of improvement MBBR process low carbon-nitrogen ratio sewages
To water outlet and dross mixture, water outlet is discharged by outlet pipe 5 after filter membrane 7, and periodically turns on skimmer device, passes through skimming
Plate 4 slides to remove scum silica frost on skimming plate slideway 3, and passes through and store the collection scum silica frost of slag case 2, and in sewage disposal process, prison
Transmembrane pressure is surveyed, when transmembrane pressure is more than 50kPa, online air recoil is carried out to filter membrane 7 using air pump and is washed, was controlled
The fouling membrane of filter membrane；When transmembrane pressure is more than 70kPa, offline dipping cleaning is carried out using chemical agent to filter membrane 7, to going out
Water is tested, and water outlet TN concentration is 3.3~3.5mg/L, and removal rate is 86.5~90%, and effluent COD concentration is 23~25mg/
L, removal rate are 74.5~79.2%, and water outlet TP 0.35~0.5mg/L of concentration, removal rate is 83~88%.Meet town sewage
Factory's level-one emission standard A.
Comparative example 2
In the present embodiment, using same 1 same apparatus of embodiment, denitrification dephosphorization sludge is not inoculated with, inoculation active is dirty
Mud adds same solid carbon source, carries out sewage disposal, remaining parameter after the completion of sewage disposal, carries out water outlet with embodiment 2
Test, water outlet TN concentration be 5.8~6.3mg/L, removal rate be 68~76%, effluent COD concentration be 45~50mg/L, removal rate
For 50~58.3%, water outlet TP concentration is 0.85~1mg/L, and removal rate is 52.5~62.5%.
Embodiment 3
A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages, front view is as shown in Figure 1, top view such as Fig. 2
Shown, which includes reactor, and the reactor is equipped with skimmer device, wherein：
The skimmer device includes skimming plate 4 and skimming plate slideway 3, and the skimming plate 4 is arranged on skimming plate slideway 3
Interior, the skimming plate 4 can reciprocatingly slide in skimming plate slideway 3, and 3 end of skimming plate slideway is equipped with storage slag case 2,
The skimmer device is arranged on above reactor；
Water inlet pipe 1 is equipped with below the sidewall of reactor, sludge pipe 8 is equipped on the outside of the reactor bottom, it is described
Sludge pipe 8 be equipped with valve 11, aeration tube 9 is equipped on the inside of the reactor bottom, the aeration tube 9 is at reactor bottom
Portion is arranged side by side, and the aeration tube 9 is connected with air blower 10；
One side is equipped with filter membrane 7 in the reactor, and the filter membrane 7 is plate membrane；
Outlet pipe 5 is equipped in the reactor, the outlet pipe 5 is connected on filter membrane 7, the outlet pipe 5
6 negative-pressure ward water outlet of self priming pump is equipped with, the outlet pipe 5 is equipped with backwashing pump 12 and carries out online backwashing, described
Backwashing pump 12 is air pump.
A kind of device using improvement MBBR process low carbon-nitrogen ratio sewages, the method for handling low carbon-nitrogen ratio sewage, bag
Include following steps：
In the present embodiment, sewage quality of intaking：90~120mg/L of COD, 2~4mg/L of TN 25~35mg/L, TP；
(1) domestication and culture of denitrification dephosphorization sludge A：
Sewage plant secondary settling tank returned sludge is cultivated using culture solution, forms the denitrification of sludge concentration 8000mg/L
Except phosphorus sludge A；
(2) preparation and pretreatment of solid carbon source B：
Rice straw is taken, rice straw is broken into 1~2 centimetre of bulk, the floating ash of washing removal twice and impurity, is dried for standby, uses
It is preceding use mass fraction impregnate 26h for 1.5% NaOH after as solid carbon source B, it is spare；
(3) inoculation membrane formation of solid carbon source B：
In mass ratio, solid carbon source B: sewage=1 in reactor: 100, solid carbon source B is added to improvement MBBR techniques
In the device for handling low carbon-nitrogen ratio sewage, by volume, the denitrification dephosphorization sludge A of sewage volume 8% in reaction of inoculation device is hung
The film time is 10d；
(4) device is started and run：
Adjust water inlet C/N be 6.5, control improve MBBR process low carbon-nitrogen ratio sewages device in dissolved oxygen be
1.5mg/L, temperature are 30 DEG C, pH 7.5, carry out sewage disposal, the device fortune of improvement MBBR process low carbon-nitrogen ratio sewages
Water outlet and dross mixture are obtained after row 20d, water outlet is discharged by outlet pipe 5 after filter membrane 7, and periodically turns on skimming dress
It puts, slides on skimming plate slideway 3 to remove scum silica frost by skimming plate 4, and pass through and store slag case 2 and collect scum silica frost, and at sewage
During reason, transmembrane pressure is monitored, when transmembrane pressure is more than 50kPa, it is anti-that online air is carried out to filter membrane 7 using air pump
It rinses, controls the fouling membrane of filter membrane；When device runs more than 3 months, filter membrane 7 is soaked offline using chemical agent
Stain is cleaned, and water outlet is tested, and water outlet TN concentration is 3.5~3.8mg/L, and removal rate is 86~89%, and effluent COD concentration is
25~28mg/L, removal rate are 72~76.7%, and water outlet TP 0.35~0.5mg/L of concentration, removal rate is 83~87.5%.Meet
Town sewage plant level-one emission standard A.
Comparative example 3
In the present embodiment, using same 1 same apparatus of embodiment, denitrification dephosphorization sludge is not inoculated with, inoculation active is dirty
Mud adds same solid carbon source, carries out sewage disposal, remaining parameter after the completion of sewage disposal, carries out water outlet with embodiment 3
Test, water outlet TN concentration are 7.5~8.2mg/L, and removal rate is 70~76%, and effluent COD concentration is 35~45.5mg/L, is removed
Rate is 61.1~63%, and water outlet TP concentration is 1.37~1.62mg/L, and removal rate is 40.5%~60%.
Embodiment 4
A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages, front view is as shown in Figure 1, top view such as Fig. 2
Shown, which includes reactor, and the reactor is equipped with skimmer device, wherein：
The skimmer device includes skimming plate 4 and skimming plate slideway 3, and the skimming plate 4 is arranged on skimming plate slideway 3
Interior, the skimming plate 4 can reciprocatingly slide in skimming plate slideway 3, and 3 end of skimming plate slideway is equipped with storage slag case 2,
The skimmer device is arranged on above reactor；
Water inlet pipe 1 is equipped with below the sidewall of reactor, sludge pipe 8 is equipped on the outside of the reactor bottom, it is described
Sludge pipe 8 be equipped with valve 11, aeration tube 9 is equipped on the inside of the reactor bottom, the aeration tube 9 is at reactor bottom
Portion is arranged side by side, and the aeration tube 9 is connected with air blower 10；
One side is equipped with filter membrane 7 in the reactor, and the filter membrane 7 is hollow-fibre membrane；
Outlet pipe 5 is equipped in the reactor, the outlet pipe 5 is connected on filter membrane 7, the outlet pipe 5
6 negative-pressure ward water outlet of self priming pump is equipped with, the outlet pipe 5 is equipped with backwashing pump 12 and carries out online backwashing, described
Backwashing pump 12 is centrifugal pump.
A kind of device using improvement MBBR process low carbon-nitrogen ratio sewages, the method for handling low carbon-nitrogen ratio sewage, bag
Include following steps：
In the present embodiment, sewage quality of intaking：2~3mg/L of COD 120~150mg/L, TN 30~35mg/L, TP；
(1) domestication and culture of denitrification dephosphorization sludge A：
Sewage plant secondary settling tank returned sludge is cultivated using culture solution, forms the denitrification of sludge concentration 8000mg/L
Except phosphorus sludge A；
(2) preparation and pretreatment of solid carbon source B：
Soybean peel is taken, soybean peel is broken into 1~2 centimetre of bulk, the floating ash of washing removal twice and impurity, is dried for standby,
Using it is preceding use mass fraction for 1.5% NaOH impregnate 20h after as solid carbon source B, it is spare；
(3) inoculation membrane formation of solid carbon source B：
In mass ratio, solid carbon source B: sewage=1 in reactor: 80, solid carbon source B is added at improvement MBBR techniques
In the device for managing low carbon-nitrogen ratio sewage, by volume, the denitrification dephosphorization sludge A of sewage volume 12% is carried out in reaction of inoculation device
Inoculation membrane formation, biofilm time are 14d；
(4) device is started and run：
The dissolved oxygen in the device of improvement MBBR process low carbon-nitrogen ratio sewages is controlled as 1mg/L, temperature is 25 DEG C, pH
For 7.5, sewage disposal is carried out, after the device operation 15d of improvement MBBR process low carbon-nitrogen ratio sewages, filter membrane 7 is passed through in water outlet
It is discharged afterwards by outlet pipe 5, and periodically turns on skimmer device, slided by skimming plate 4 on skimming plate slideway 3 floating to remove
Slag, and pass through and store the collection scum silica frost of slag case 2, and in sewage disposal process, transmembrane pressure is monitored, when transmembrane pressure is more than 50kPa
When, online clear water backwash carries out filter membrane 7 using centrifugal pump, controls the fouling membrane of filter membrane；When transmembrane pressure is more than
During 70kPa, offline dipping cleaning is carried out using chemical agent to filter membrane 7, water outlet is tested, effluent COD concentration 33.6
~36mg/L, TN concentration 4.7~4.9mg/L, TP concentration 0.4~0.49mg/L, COD, TN, TP removal rate is respectively 72~
76%, 83~86.4%, 80~83.7%, meet town sewage plant level-one emission standard A.
Embodiment 5
A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages, front view is as shown in Figure 1, top view such as Fig. 2
Shown, which includes reactor, and the reactor is equipped with skimmer device, wherein：
The skimmer device includes skimming plate 4 and skimming plate slideway 3, and the skimming plate 4 is arranged on skimming plate slideway 3
Interior, the skimming plate 4 can reciprocatingly slide in skimming plate slideway 3, and 3 end of skimming plate slideway is equipped with storage slag case 2,
The skimmer device is arranged on above reactor；
Water inlet pipe 1 is equipped with below the sidewall of reactor, sludge pipe 8 is equipped on the outside of the reactor bottom, it is described
Sludge pipe 8 be equipped with valve 11, aeration tube 9 is equipped on the inside of the reactor bottom, the aeration tube 9 is at reactor bottom
Portion is arranged side by side, and the aeration tube 9 is connected with air blower 10；
One side is equipped with filter membrane 7 in the reactor, and the filter membrane 7 is hollow-fibre membrane；
Outlet pipe 5 is equipped in the reactor, the outlet pipe 5 is connected on filter membrane 7, the outlet pipe 5
6 negative-pressure ward water outlet of self priming pump is equipped with, the outlet pipe 5 is equipped with backwashing pump 12 and carries out online backwashing, described
Backwashing pump 12 is centrifugal pump.
A kind of device using improvement MBBR process low carbon-nitrogen ratio sewages, the method for handling low carbon-nitrogen ratio sewage, bag
Include following steps：
In the present embodiment, sewage quality of intaking：3.5~5mg/L of COD 115~125mg/L, TN 20~25mg/L, TP；
(1) domestication and culture of denitrification dephosphorization sludge A：
Sewage plant secondary settling tank returned sludge is cultivated using culture solution, forms the denitrification of sludge concentration 8000mg/L
Except phosphorus sludge A；
(2) preparation and pretreatment of solid carbon source B：
PLA is taken, is a diameter of 0.1~0.3cm by PLA processing, is made after blocking the roundlet cylindrical particle that length is 1~2cm
It is spare for solid carbon source B；
(3) inoculation membrane formation of solid carbon source B：
In mass ratio, solid carbon source B: sewage=1 in reactor: 80, solid carbon source B is added at improvement MBBR techniques
In the device for managing low carbon-nitrogen ratio sewage, by volume, the denitrification dephosphorization sludge A of sewage volume 10% in reaction of inoculation device, into
Row inoculation membrane formation, biofilm time are 15d；
(4) device is started and run：
It is 6 to adjust water inlet C/N, and it is 2mg/ to control the dissolved oxygen in the device of improvement MBBR process low carbon-nitrogen ratio sewages
L, temperature are 25 DEG C, pH 8.0, carry out sewage disposal, after the device operation 23d for improveing MBBR process low carbon-nitrogen ratio sewages
Water outlet is discharged after filter membrane 7 by outlet pipe 5, and periodically turns on skimmer device, by skimming plate 4 on skimming plate slideway 3
It slides to remove scum silica frost, and passes through and store the collection scum silica frost of slag case 2, and in sewage disposal process, monitor transmembrane pressure, work as transmembrane pressure
When difference is more than 50kPa, online clear water backwash carries out filter membrane 7 using centrifugal pump, controls the fouling membrane of filter membrane；Work as device
When running more than 3 months, offline dipping cleaning is carried out using chemical agent to filter membrane 7, periodically water outlet is tested, water outlet
COD concentration 31.25~32.2mg/L, TN concentration 3.0~4.55mg/L, TP concentration 0.4~0.5mg/L, COD, TN, TP removal rate
Respectively 72~75%, 85~87%, 85~90%, meet town sewage plant level-one emission standard A.
Embodiment 6
A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages, front view is as shown in Figure 1, top view such as Fig. 2
Shown, which includes reactor, and the reactor is equipped with skimmer device, wherein：
The skimmer device includes skimming plate 4 and skimming plate slideway 3, and the skimming plate 4 is arranged on skimming plate slideway 3
Interior, the skimming plate 4 can reciprocatingly slide in skimming plate slideway 3, and 3 end of skimming plate slideway is equipped with storage slag case 2,
The skimmer device is arranged on above reactor；
Water inlet pipe 1 is equipped with below the sidewall of reactor, sludge pipe 8 is equipped on the outside of the reactor bottom, it is described
Sludge pipe 8 be equipped with valve 11, aeration tube 9 is equipped on the inside of the reactor bottom, the aeration tube 9 is at reactor bottom
Portion is arranged side by side, and the aeration tube 9 is connected with air blower 10；
One side is equipped with filter membrane 7 in the reactor, and the filter membrane 7 is hollow-fibre membrane；
Outlet pipe 5 is equipped in the reactor, the outlet pipe 5 is connected on filter membrane 7, the outlet pipe 5
6 negative-pressure ward water outlet of self priming pump is equipped with, the outlet pipe 5 is equipped with backwashing pump 12 and carries out online backwashing, described
Backwashing pump 12 is centrifugal pump.
A kind of device using improvement MBBR process low carbon-nitrogen ratio sewages, the method for handling low carbon-nitrogen ratio sewage, bag
Include following steps：
In the present embodiment, sewage quality of intaking：COD 140~150mg/L, TN 15~20mg/L, TP3~4mg/L；
(1) domestication and culture of denitrification dephosphorization sludge A：
Sewage plant secondary settling tank returned sludge is cultivated using culture solution, forms the denitrification of sludge concentration 8000mg/L
Except phosphorus sludge A；
(2) preparation and pretreatment of solid carbon source B：
PBS is taken, is a diameter of 0.1~0.3cm by PBS processing, is made after blocking the roundlet cylindrical particle that length is 1~2cm
It is spare for solid carbon source B；
(3) inoculation membrane formation of solid carbon source B：
In mass ratio, solid carbon source B: sewage=1 in reactor: 80, solid carbon source B is added at improvement MBBR techniques
In the device for managing low carbon-nitrogen ratio sewage, by volume, the denitrification dephosphorization sludge A of sewage volume 10% in reaction of inoculation device, into
Row inoculation membrane formation, biofilm time are 12d；
(4) device is started and run：
Adjust water inlet C/N be 7.5, control improve MBBR process low carbon-nitrogen ratio sewages device in dissolved oxygen be
1.5mg/L, temperature are 25 DEG C, pH 7.5, carry out sewage disposal, the device fortune of improvement MBBR process low carbon-nitrogen ratio sewages
Water outlet is discharged after filter membrane 7 by outlet pipe 5 after row 20d, and periodically turns on skimmer device, by skimming plate 4 in skimming plate
It slides to remove scum silica frost on slideway 3, and passes through and store the collection scum silica frost of slag case 2, and in sewage disposal process, monitor transmembrane pressure,
When transmembrane pressure is more than 50kPa, online clear water backwash carries out filter membrane 7 using centrifugal pump, the film for controlling filter membrane is dirty
Dye；When device runs more than 3 months, offline dipping cleaning is carried out using chemical agent to filter membrane 7, periodically water outlet is carried out
Test, effluent COD concentration 30~36.4mg/L, TN concentration 2.25~2.4mg/L, TP concentration 0.48~0.5mg/L, COD, TN,
TP removal rates are respectively 74~80%, 85~88%, 84~87.5%, meet town sewage plant level-one emission standard A.
Embodiment 7
A kind of device for improveing MBBR process low carbon-nitrogen ratio sewages, front view is as shown in Figure 1, top view such as Fig. 2
Shown, which includes reactor, and the reactor is equipped with skimmer device, wherein：
The skimmer device includes skimming plate 4 and skimming plate slideway 3, and the skimming plate 4 is arranged on skimming plate slideway 3
Interior, the skimming plate 4 can reciprocatingly slide in skimming plate slideway 3, and 3 end of skimming plate slideway is equipped with storage slag case 2,
The skimmer device is arranged on above reactor；
Water inlet pipe 1 is equipped with below the sidewall of reactor, sludge pipe 8 is equipped on the outside of the reactor bottom, it is described
Sludge pipe 8 be equipped with valve 11, aeration tube 9 is equipped on the inside of the reactor bottom, the aeration tube 9 is at reactor bottom
Portion is arranged side by side, and the aeration tube 9 is connected with air blower 10；
One side is equipped with filter membrane 7 in the reactor, and the filter membrane 7 is hollow-fibre membrane；
Outlet pipe 5 is equipped in the reactor, the outlet pipe 5 is connected on filter membrane 7, the outlet pipe 5
6 negative-pressure ward water outlet of self priming pump is equipped with, the outlet pipe 5 is equipped with backwashing pump 12 and carries out online backwashing, described
Backwashing pump 12 is centrifugal pump.
A kind of device using improvement MBBR process low carbon-nitrogen ratio sewages, the method for handling low carbon-nitrogen ratio sewage, bag
Include following steps：
In the present embodiment, sewage quality of intaking：COD is 135~150mg/L, and ammonia nitrogen is 30~35mg/L, TP for 2~
4mg/L；
(1) domestication and culture of denitrification dephosphorization sludge A：
Sewage plant secondary settling tank returned sludge is cultivated using culture solution, forms the denitrification of sludge concentration 8000mg/L
Except phosphorus sludge A；
(2) preparation and pretreatment of solid carbon source B：
PCL is taken, is a diameter of 0.1~0.3cm by PCL processing, is made after blocking the roundlet cylindrical particle that length is 1~2cm
It is spare for solid carbon source B；
(3) inoculation membrane formation of solid carbon source B：
In mass ratio, solid carbon source B: sewage=1 in reactor: 100, solid carbon source B is added to improvement MBBR techniques
In the device for handling low carbon-nitrogen ratio sewage, by volume, the denitrification dephosphorization sludge A of sewage volume 10% in reaction of inoculation device,
Inoculation membrane formation is carried out, the biofilm time is 10d；
(4) device is started and run：
Adjust water inlet C/N be 4.5, control improve MBBR process low carbon-nitrogen ratio sewages device in dissolved oxygen be
1mg/L, temperature are 25 DEG C, pH 7.5, carry out sewage disposal, the device operation of improvement MBBR process low carbon-nitrogen ratio sewages
Water outlet water outlet after filter membrane 7 is discharged by outlet pipe 5 after 15d, and periodically turns on skimmer device, by skimming plate 4 in skimming
It slides to remove scum silica frost on plate slideway 3, and passes through and store the collection scum silica frost of slag case 2, and in sewage disposal process, monitor transmembrane pressure
Difference when transmembrane pressure is more than 50kPa, carries out filter membrane 7 online clear water backwash using centrifugal pump, controls the film of filter membrane
Pollution；When transmembrane pressure is more than 70kPa, offline dipping cleaning is carried out using chemical agent to filter membrane 7, and periodically to water outlet
It is tested, water outlet TN 4.0~5.0mg/L of concentration, removal rate 85.9~87%, effluent COD concentration is 35~40mg/L, is removed
Rate is 72~74%, and water outlet TP 0.38~0.5mg/L of concentration, removal rate is 83~87.5%, meets town sewage plant level-one A rows
Put standard.
Comparative example 7
In the present embodiment, using same 7 same apparatus of embodiment, ordinary activated sludge is inoculated with, adds same solid carbon source, into
Row sewage disposal, remaining parameter after the completion of sewage disposal, are tested water outlet with embodiment 7, and water outlet TN concentration 5.0~
5.8mg/L, removal rate 83~86%, effluent COD concentration are 53~62.5mg/L, and removal rate is 58.3~60.7%, water outlet TP
Concentration is 1.35~1.55mg/L, and removal rate is 52~61%.
The above is only the preferable specific embodiment of the utility model, but the embodiment of the utility model is not
It is limited by examples detailed above, protection domain is also not limited thereto, and any one skilled in the art is not originally departing from
In the case of the core of the utility model, technical solution and its utility model design according to the present utility model is done simple
The equivalent substitute mode such as deformation, modification, simplified, should be covered within the scope of the utility model.
Claims (3)
1. a kind of device for improveing MBBR process low carbon-nitrogen ratio sewages, which is characterized in that the device includes reactor, described
Reactor be equipped with skimmer device, wherein：
Water inlet pipe is equipped with below the sidewall of reactor, sludge pipe, the reaction are equipped on the outside of the reactor bottom
Device bottom inside is equipped with aeration tube；
One side is equipped with filter membrane in the reactor, and the skimmer device is arranged on above reactor；
Outlet pipe is equipped in the reactor, the outlet pipe connects filter membrane in reactor.
2. the device of improvement MBBR process low carbon-nitrogen ratio sewages according to claim 1, which is characterized in that described
Skimmer device includes skimming plate and skimming plate slideway, and the skimming plate is arranged in skimming slideway, the skimming plate slideway
End is equipped with storage slag case.
3. the device of improvement MBBR process low carbon-nitrogen ratio sewages according to claim 1, which is characterized in that shown
Filter membrane is plate membrane or hollow-fibre membrane.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109399807A (en) * | 2018-11-16 | 2019-03-01 | 浙江海洋大学 | A kind of eutrophication water biology in situ-ecology joint prosthetic device and its method |
| CN109485148A (en) * | 2018-11-06 | 2019-03-19 | 宁波水思清环境科技有限公司 | A kind of biomass solid carbon source and its preparation method and application |
-
2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109485148A (en) * | 2018-11-06 | 2019-03-19 | 宁波水思清环境科技有限公司 | A kind of biomass solid carbon source and its preparation method and application |
| CN109399807A (en) * | 2018-11-16 | 2019-03-01 | 浙江海洋大学 | A kind of eutrophication water biology in situ-ecology joint prosthetic device and its method |
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