CN108975616A - Handle the system and method for biomass pyrolytic water - Google Patents
Handle the system and method for biomass pyrolytic water Download PDFInfo
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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Abstract
The invention discloses a kind of system and methods for handling biomass pyrolytic water, comprising: pyrolysis reactor, condensing plant, oily water separating equipment, grid, conditioning tank, oil removal by air bubbling equipment, photocatalysis oxidation reaction equipment, anaerobic reactor, second level A/O reactor, MBR reactor, nanofiltration equipment and reverse osmosis equipment are formed by connecting.The system is able to achieve the advanced treating of pyrolysis water caused by pyrolysis biomass, other useless materials in treatment process are able to achieve harmless treatment.
Description
Technical field
The present invention relates to sewage treatment field more particularly to a kind of system and methods for handling biomass pyrolytic water
Background technique
A kind of major product when biomass pyrolytic water is the charing of the biomass pyrolytics such as bamboo class, timber, stalk, biomass exist
In pyrolytic process, charcoal, tar and gaseous product can be generated.Gaseous product is obtained with after condensation and gas-liquid separation
Oil water mixture, the mixture obtain the liquid of sepia after further water-oil separating, which is wood vinegar.Vinegar liquid
Chemical component extremely complex contain nearly 200 kinds of organic matters such as alcohols, acids, phenols, aldehydes, ketone, complicated components, content
It is unstable.The non-mass product of the liquid at present, still containing multiring aromatic hydrocarbons such as high activity carcinogenic substance BaPs in liquid
Carcinogen and very big influence can be caused to environment into environment containing the resolvability tar emission that is difficult to remove.
Due to Equipment and process conditions, contain a large amount of tar and impurity in major part biomass pyrolytic water at present,
Biomass pyrolytic aquatic productsization are more difficult.The producer of large scale preparation bamboo charcoal is biomass pyrolytic water as wastewater treatment at present.
Due to acid strong, very high containing a large amount of tar, COD, ammonia-nitrogen content in pyrolysis water, conventional treatment is difficult qualified discharge.
Chinese patent CN106590716A discloses a kind of processing method of the concentration tar removing of gasification of biomass liquid, application
6 techniqueflows are technological package route, wherein the 1st~4 techniqueflow, that is, neutralization reaction, for the first time distillation, acidification are instead
It should be the concentration tar removing method of wood vinegar with second of distillation, the 5th~6 techniqueflow washs filtering and third time is distilled
Method to separate wood tar.The program makes the organic acid content of wood vinegar be increased to 95% or more, tar content removal 95%
More than, cycles of concentration can achieve 1~95 times of any multiple.Only introduce place to go tar technique in the program, and water
In a large amount of soluble organics do not remove, if this direct discharging of waste water containing large amount of organic pollutes the environment.
Chinese patent CN104650933B proposes that a kind of refuse pyrolysis sewage disposal system, including raw material cabin, raw material are located in advance
Manage device, pyrolysis oven, oily-water seperating equipment, collecting-tank, pyrolytic carbon cooling device, sewage just purification device, integrated wastewater processing
System, pyrolytic carbon collection device；Raw material cabin connects the raw material preprocessing device, and raw material preprocessing device passes through piping connection heat
Solve furnace；Raw material cabin passes through piping connection collecting-tank；Pyrolysis oven is connect with oily-water seperating equipment, the outlet of sewer of oily-water seperating equipment
Connect collecting-tank；The pyrolysis oven connects pyrolytic carbon cooling device by discharge port；It is net at the beginning of the pyrolytic carbon outlet connection sewage
Makeup is set.The method that the invention proposes both had reduced sewage apparatus investment, and had simplified process flow, while having saved quenching again
Use water.Again the adsorption function for having excavated refuse pyrolysis charcoal is used to handle pyrolysis sewage, and does not cause secondary pollution, reaches
The purpose of " treatment of wastes with processes of wastes against one another " is a kind of effective ways of environmentally protective processing pyrolysis sewage.Special attention will be given to is used in the program
Refuse pyrolysis charcoal processing pyrolysis waste water, but the process matched therewith that can make discharged wastewater met the national standard is not disclosed, waste water can not be solved and reached
The problem of mark discharge.
Summary of the invention
Based on the problems of prior art, the object of the present invention is to provide a kind of systems for handling biomass pyrolytic water
And method, it is able to achieve that biomass pyrolytic water is efficient, free of contamination harmless treatment.
The purpose of the present invention is what is be achieved through the following technical solutions:
Embodiment of the present invention provides a kind of system for handling biomass pyrolytic water, comprising:
Pyrolysis reactor, condensing plant, oily water separating equipment, grid, conditioning tank, oil removal by air bubbling equipment, photochemical catalytic oxidation
Consersion unit, anaerobic reactor, second level A/O reactor, MBR reactor, nanofiltration equipment and reverse osmosis equipment；Wherein,
The pyrolysis reactor is equipped with biomass inlet, pyrolytic carbon outlet, concentrated water entrance, combustible gas entrance and gas and goes out
Mouthful, the gas vent and the condensing plant, the condensing plant are respectively equipped with pyrolysis gas outlet and oil water mixture outlet,
The oil water mixture outlet connects the oily water separating equipment, and the oily water separating equipment is respectively equipped with pyrolysis oil export and heat
Solve water out, the pyrolysis water out and the grid, conditioning tank, oil removal by air bubbling equipment, photocatalysis oxidation reaction equipment, anaerobism
Reactor, second level A/O reactor, MBR reactor, nanofiltration equipment and reverse osmosis equipment are sequentially connected with；
The anaerobic reactor is equipped with exhaust outlet, which connect with the combustible gas entrance of the pyrolysis reactor；
The nanofiltration equipment and the outlet of the concentrated water of reverse osmosis equipment are connect with the concentrated water entrance of the pyrolysis reactor；
The reverse osmosis equipment is equipped with water out up to standard.
Embodiment of the present invention also provides a kind of method for handling biomass pyrolytic water, using system of the invention, including
Following steps:
Biomass enters pyrolysis reactor, and the gas of generation enters condensing plant, generated respectively after condensing pyrolysis gas and
Oil water mixture, pyrolysis gas output utilize, and oil water mixture enters oily water separating equipment, isolate pyrolysis oil and pyrolysis water, heat
Solution oil output recycle, the pyrolysis water through grid enter conditioning tank, oil removal by air bubbling equipment, photocatalysis oxidation reaction equipment,
Anaerobic reactor, second level A/O reactor, MBR reactor, nanofiltration equipment, reverse osmosis equipment are successively handled, reverse osmosis equipment
Water outlet that treated is water up to standard；
The fuel gas that the anaerobic reactor generates enters pyrolytic reaction through the combustible gas entrance of the pyrolysis reactor
Device is as combustion gas；
The concentrated water of the nanofiltration equipment and the concentrated water of reverse osmosis equipment enter the pyrolysis reactor burning disposal.
As seen from the above technical solution provided by the invention, processing biomass pyrolytic water provided in an embodiment of the present invention
System and method, it has the advantage that:
By the way that pyrolysis reactor, condensing plant, oily water separating equipment, grid, conditioning tank, oil removal by air bubbling equipment, light are urged
Oxidation equipment, anaerobic reactor, second level A/O reactor, MBR reactor, nanofiltration equipment and the organic company of reverse osmosis equipment
It connects to form the system that one kind can be pyrolyzed biomass and pyrolysis water is effectively treated.In the system, by being arranged after conditioning tank
Air-float degreasing device eliminates suspended oil and oil emulsion in waste water, reduces the load of subsequent technique, while avoiding oils
Influence of the aggregation to subsequent technique；After waste water oil removing, the photocatalytic oxidation reactor into setting is handled, and that improves waste water can
Biochemical, and poisonous and harmful substance is removed, be conducive to subsequent biochemical processing；Removal biomass is reacted with second level A/O by anaerobism
The organic matter and ammonia nitrogen being pyrolyzed in sewage, cost is relatively low；It is raw by film by using MBR technique after second level A/O reactor
The separation of water and microorganism, particle is realized in the effect of object reactor；The depth of water is realized using nanofiltration plus reverse osmosis technique
Reason, technical maturity are stablized, and the concentrated water of generation all enters pyrolysis reactor in the form sprayed, realizes the innoxious place of concentrated water
Reason；The biogas that anaerobic reactor generates enters pyrolysis reactor as combustible gas, provides energy for pyrolytic reaction, realizes energy
Comprehensive utilization.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the system schematic of processing biomass pyrolytic water provided in an embodiment of the present invention；
Fig. 2 is the method flow diagram of processing biomass pyrolytic water provided in an embodiment of the present invention；
Figure label are as follows: 1- pyrolysis reactor；2- condensing plant；3- oily water separating equipment；4- grid；5- conditioning tank；6-
Oil removal by air bubbling equipment；7- photocatalytic oxidation reactor；8- anaerobic reactor；9- second level AO reactor；10-MBR reactor；11-
Nanofiltration equipment；12- reverse osmosis equipment；A- biomass inlet；The outlet of B- pyrolytic carbon；C- pyrolysis gas outlet；D- dissolves oil export；E-
Water out up to standard.
Specific embodiment
Below with reference to particular content of the invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
Belong to protection scope of the present invention.The content being not described in detail in the embodiment of the present invention belongs to professional and technical personnel in the field
The well known prior art.
As shown in Figure 1, the embodiment of the present invention provides a kind of system for handling biomass pyrolytic water, comprising:
Pyrolysis reactor, condensing plant, oily water separating equipment, grid, conditioning tank, oil removal by air bubbling equipment, photochemical catalytic oxidation
Consersion unit, anaerobic reactor, second level A/O reactor, MBR reactor, nanofiltration equipment and reverse osmosis equipment；Wherein,
Pyrolysis reactor is equipped with biomass inlet, pyrolytic carbon outlet, concentrated water entrance, combustible gas entrance and gas vent, gas
Body outlet and condensing plant, condensing plant are respectively equipped with pyrolysis gas outlet and oil water mixture outlet, and oil water mixture outlet connects
Oily water separating equipment is connect, oily water separating equipment is respectively equipped with pyrolysis oil export and pyrolysis water out, and pyrolysis water out and grid are adjusted
Save pond, oil removal by air bubbling equipment, photocatalysis oxidation reaction equipment, anaerobic reactor, second level A/O reactor, MBR reactor, nanofiltration
Equipment and reverse osmosis equipment are sequentially connected with；
Anaerobic reactor is equipped with exhaust outlet, the combustible gas entrance connection of the exhaust outlet and pyrolysis reactor；
Nanofiltration equipment and the outlet of the concentrated water of reverse osmosis equipment are connect with the concentrated water entrance of pyrolysis reactor；
Reverse osmosis equipment is equipped with water out up to standard.
In above system, oil removal by air bubbling equipment uses shallow-layer ion air bearing waste-oil scavenger.Further, add in treatment process
Add corresponding flocculant, demulsifier etc., further, as a preferred embodiment of the above technical solution, the flocculant that the present invention uses for
One or more of polyacrylamide, aluminium polychloride, bodied ferric sulfate, polymeric aluminum sulfate iron.
In above system, oil removal by air bubbling equipment is equipped with coagulant adding apparatus.
In above system, it is equipped with spraying mechanism in pyrolytic reaction equipment, is connect with concentrated water entrance, it can be by the dense of nanofiltration equipment
The concentrated water of water and reverse osmosis equipment, which sprays, enters pyrolysis reactor progress burning disposal.
The ultraviolet lamp that power is 1~60KW is equipped in above system, in photocatalysis oxidation reaction equipment.Further, light
Oxidant is one or more of hydrogen peroxide, sodium hypochlorite, chlorine dioxide in catalytic oxidation, and oxidant adds quality
It is the 0.1~10% of wastewater quality, light application time is 10~300mins.
In above system, anaerobic reactor uses UASB anaerobic reactor.Preferably, anaerobism uses anaeration in normal temperature, control
Temperature is at 35 ± 1 DEG C.
In above system, MBR reactor uses submerged hollow fiber membrane, and the material of hollow-fibre membrane is Kynoar
Film, trapped particles partial size are 0.02um.
Specifically, the composition of above system is as shown in Figure 1, comprising: pyrolysis reactor 1, condensing plant 2, water-oil separating are set
Standby 3, grid 4, conditioning tank 5, oil removal by air bubbling equipment 6, photocatalytic oxidation reactor 7, anaerobic reactor 8, second level A/O reactor 9,
MBR reactor 10, nanofiltration equipment 11 and reverse osmosis equipment 12；Biomass enters pyrolysis reactor 1, and the gas of generation enters condensation
Equipment 2, the oil water mixture of generation enter oily water separating equipment 3, isolate pyrolysis oil and pyrolysis water, and pyrolysis water enters grid；
Grid, conditioning tank, oil removal by air bubbling equipment, photocatalytic oxidation reactor, anaerobic reactor, second level A/O reactor, MBR reactor,
Nanofiltration equipment, reverse osmosis equipment are sequentially connected, and reverse osmosis water outlet is water up to standard.The outlet of nanofiltration concentrated water and reverse osmosis concentrated water go out
Mouth is connected with the feed inlet of pyrolysis reactor, the combustible gas entrance phase of the gas vent and pyrolysis reactor of anaerobic reactor
Even.
In above system, by adding oil removal by air bubbling equipment after conditioning tank, the suspended oil in waste water and emulsification are eliminated
Oil, reduces the load of subsequent technique, while avoiding influence of the aggregation to subsequent technique of oils.
In above system, after waste water oil removing, into photocatalytic oxidation reactor, waste water is improved by photochemical catalytic oxidation device
Biodegradability, and poisonous and harmful substance is removed, be conducive to subsequent biochemical processing.
In above system, by organic in anaerobic reactor+second level A/O reactor cooperation removal biomass pyrolytic sewage
Object and ammonia nitrogen, cost is relatively low.
In above system, MBR reactor is used after second level A/O reactor, passes through the membrane biological reaction of MBR reactor
The separation of water and microorganism, particle is realized in effect.
In above system, the advanced treating of water is realized using nanofiltration equipment+reverse osmosis equipment, technical maturity is stablized, and generates
Concentrated water all enter pyrolysis reactor in the form sprayed, realize the harmless treatment of concentrated water.
In above system, the biogas that anaerobic reactor generates enters pyrolysis reactor as combustible gas, mentions for pyrolytic reaction
For energy, the comprehensive utilization of energy is realized.
The embodiment of the present invention also provides a kind of method for handling biomass pyrolytic water, using above-mentioned system, including it is following
Step (referring to fig. 2):
Biomass enters pyrolysis reactor, and the gas of generation enters condensing plant, generated respectively after condensing pyrolysis gas and
Oil water mixture, pyrolysis gas output utilize, and oil water mixture enters oily water separating equipment, isolate pyrolysis oil and pyrolysis water, heat
Solution oil output recycles, and is pyrolyzed water through grid and enters conditioning tank, oil removal by air bubbling equipment, photocatalysis oxidation reaction equipment, anaerobism
Reactor, second level A/O reactor, MBR reactor, nanofiltration equipment, reverse osmosis equipment are successively handled, reverse osmosis equipment processing
Water outlet afterwards is water up to standard；
The fuel gas that anaerobic reactor generates enters pyrolysis reactor as combustion through the combustible gas entrance of pyrolysis reactor
Gas；
The concentrated water of nanofiltration equipment and the concentrated water of reverse osmosis equipment enter pyrolysis reactor burning disposal.
In the above method, flocculant is added to oil removal by air bubbling equipment, flocculant is polyacrylamide, aluminium polychloride, gathers
Close one or more of ferric sulfate, polymeric aluminum sulfate iron；
In the above method, the oxidant used in photocatalytic oxidation reactor is in hydrogen peroxide, sodium hypochlorite, chlorine dioxide
One or more, oxidant add quality be wastewater quality 0.1~10%, light application time be 10~300mins, the light
The power of ultraviolet lamp used is 1~60KW in catalyst oxidation reactor.
In the above method, the reaction temperature of anaerobic reactor is 35 ± 1 DEG C；
The concentrated water that nanofiltration equipment and reverse osmosis equipment generate all enters pyrolysis reactor in a manner of spraying.
Specifically, steps are as follows for the above method: biomass generates oil after entering the gas condensation generated in pyrolysis reactor
Aqueous mixtures isolate pyrolysis water after oily water separating equipment.Biomass pyrolytic water enters grid, grid slag and excess sludge one
And dispose, waste water enters conditioning tank, and conditioning tank elevator pump is promoted to air-float degreasing device, addition in air-floating apparatus after homogeneous average
Corresponding flocculant, demulsifier, by bubble micron-sized in air-floating apparatus, most suspended oil and emulsification in waste water
Oil is separated；After waste water oil removing, into photocatalysis oxidation reaction apparatus, the biochemical of waste water is can be improved in photocatalytic oxidation reactor
Property, and can remove poisonous and harmful substance, be conducive to subsequent biochemical processing.Photocatalytic oxidation reactor includes a neutralization reaction
Pond adjusts wastewater pH, is promoted to anaerobic reactor by middle water pump after waste water is clarified and carries out anaerobic biochemical reaction.By one
The anaerobic reaction fixed time, makes the sewage of high concentration obtain a degree of degradation, and larger molecular organics are decomposed into easy drop
The organic matter of solution is degradable, while the small molecules inorganic substances such as generate methane, water, mentions for subsequent aerobic biochemical process
For good flow condition.Anaerobic effluent enters two-stage A/O reactor.Using second level A/O technique, i.e., mixing is added to expose using anoxic
Gas pond removes biochemical organic matter and ammonia nitrogen, including denitrification reactor, nitrator, nitrator by nitrifier and
Acting under aerobic state for facultative aerobe, is oxidized to NO3- for NH4+, and remaining organic substance is degraded.Nitrification
Mixed liquor in pond flows back into denitrification pond, and under anaerobic condition, NO3- is converted nitrogen discharge by denitrifying bacterium.In second level A/
MBR technique is used after O reactor, microbial cells are divided from water outlet by efficient MBR film unit in MBR membrane bioreactor
From, it is ensured that it is safely trapped in system greater than 0.02 μm of particulate matter, microorganism and suspended matter relevant to CODCr, thus
Hydraulic detention time and sludge retention time is set to obtain separation truly, the excess sludge that MBR reactor generates is regular
Sludge concentration tank is discharged into be handled.For waste water after front-end process is handled, major pollutants ammonia nitrogen, total nitrogen, SS etc. are substantially complete
It is required at effluent quality, but pollutant COD needs further removal, tertiary treatment mainly to use nanofiltration equipment+reverse osmosis equipment
Technique, by the screening of the aperture of film and charge effect etc., pollutant is trapped within concentrated water side, and water outlet reaches GB18918-
The concentrated water spray of 2002 first grade discharging requirement, nanofiltration and reverse osmosis generation enters pyrolytic reaction device, is further pyrolyzed,
Realize the harmless treatment of concentrated water.
The method of the invention realizes the advanced treatings of biomass pyrolytic water, and process, cost is relatively low, and water outlet reaches
The first grade discharging requirement of GB18918-2002.The suspended oil and oil emulsion in waste water can be removed with air bearing mode；Photoactivation oxygen
Change mode goes poisonous and harmful substance in water removal, improves wastewater biochemical；Larger molecular organics and ammonia are removed with biochemical reactor again
Nitrogen, then to nanofiltration+reverse osmosis equipment progress water advanced treating, it is convenient for industrialization and expanding production；The film that the technique generates is dense
Water can be injected directly into pyrolysis installation and realize secondary pyrolysis, solve the problems, such as concentrated water；The biogas that the technique anaerobic oxidation generates can
To be directly entered the burning of pyrolytic reaction device, heat is provided to pyrolysis installation.
The embodiment of the present invention is specifically described in further detail below.
Embodiment 1
The present embodiment provides a kind of system and method for handling biomass pyrolytic water, which is constituted referring to Fig. 1, including suitable
Pyrolysis reactor, condensing plant and the oily water separating equipment of secondary connection constitute pyrolysis processing subsystem, using bamboo as biomass
Pyrolysis processing is carried out, obtained pyrolysis water carries out subsequent processing；The bamboo pyrolysis water of processing is H=4.8, COD content
193000mg/L, ammonia-nitrogen content 3120mg/L, SS content 320mg/L:
(1) conditioning tank: by conditioning tank, pH is adjusted to 7~8, COD content 176800mg/L, ammonia-nitrogen content 3105mg/L,
SS content 260mg/L；
(2) oil removal by air bubbling equipment: being added the bodied ferric sulfate of 2000mg/L, and the polyacrylamide of 10mg/L passes through flocculation
Precipitation, removes macromolecular organic pollutant and coloration, and oil removal by air bubbling equipment is the air bearing of shallow-layer ion, Air Bubble Size 1um
Left and right is discharged pH=7.6, COD content 106800mg/L, ammonia-nitrogen content 2865mg/L, SS content 80mg/ by oil removal by air bubbling
L；
(3) hydrogen peroxide 5%, ultraviolet lamp power 1kw, light application time 120min, photocatalysis photocatalytic oxidation reactor: is added
Oxidation reactor is discharged pH=7.1, COD content 28190mg/L, ammonia-nitrogen content 2100mg/L, SS content 68mg/L；
(4) anaerobic reactor: UASB anaerobic reactor is used, pretreatment water outlet enters UASB anaerobic reactor, by this
Stages, the organic matters such as hydrolysis, acidification, hydrogenesis and acetogenesis, methanation in reactor are degraded, and are discharged pH=7.4, COD content
8040mg/L, ammonia-nitrogen content 1647mg/L, SS content 867mg/L；
(5) second level AO reactor: the water outlet of anaerobic reactor enters second level AO reactor, by anaerobism, anoxic, aerobic
Reaction, organic matter, ammonia nitrogen concentration further decrease, be discharged pH=8.3, COD content 1019mg/L, ammonia-nitrogen content 15mg/L,
SS content 21751mg/L；
(6) MBR reactor: by biochemical reaction and film filtration in the MBR reactor, the suspended matter of water outlet, ammonia nitrogen,
COD reduces obvious, water outlet pH=7.3, COD content 750mg/L, ammonia-nitrogen content 10mg/L, SS content 5mg/L；
(7) nanofiltration equipment: nanofiltration equipment operation pressure is 6MPa, and the rate of recovery 85% is discharged pH=6.95, COD content
60.2mg/L, ammonia-nitrogen content 3.36mg/L, SS content 3.2mg/L.
(8) reverse osmosis equipment: reverse osmosis equipment operating pressure is 15MPa, and the rate of recovery 90% is discharged pH=6.5, COD
Content 5.5mg/L, ammonia-nitrogen content 0.86mg/L, SS content 0.2mg/L.
Embodiment 2
The present embodiment provides a kind of system and method for handling biomass pyrolytic water, which is constituted referring to Fig. 1, including suitable
Pyrolysis reactor, condensing plant and the oily water separating equipment of secondary connection constitute pyrolysis processing subsystem, using corn stover as life
Substance carries out pyrolysis processing, and obtained pyrolysis water carries out subsequent processing, and the corn stover pyrolysis water of processing is pH=5.8, COD
Content 164500mg/L, ammonia-nitrogen content 4120mg/L, SS content 450mg/L:
(1) conditioning tank: by conditioning tank, pH is adjusted to 7~8, COD content 125100mg/L, ammonia-nitrogen content 4021mg/L,
SS content 420mg/L；
(2) oil removal by air bubbling equipment: being added the bodied ferric sulfate of 1500mg/L, and the polyacrylamide of 10mg/L passes through flocculation
Precipitation, removes macromolecular organic pollutant and coloration, and oil removal by air bubbling equipment is the air bearing of shallow-layer ion, Air Bubble Size 1um
Left and right is discharged pH=7.6, COD content 96870mg/L, ammonia-nitrogen content 3765mg/L, SS content 120mg/ by oil removal by air bubbling
L；
(3) hydrogen peroxide 5%, ultraviolet lamp power 1kw, light application time 100min, photocatalysis photocatalytic oxidation reactor: is added
Oxidation reactor is discharged pH=6.8, COD content 28390mg/L, ammonia-nitrogen content 3600mg/L, SS content 118mg/L；
(4) anaerobic reactor: UASB anaerobic reactor is used, pretreatment water outlet enters UASB anaerobic reactor, by this
Stages, the organic matters such as hydrolysis, acidification, hydrogenesis and acetogenesis, methanation in anaerobic reactor are degraded, and are discharged pH=7.1, COD
Content 7040mg/L, ammonia-nitrogen content 2657mg/L, SS content 987mg/L；
(4) second level AO reactor: the water outlet of anaerobic reactor enters second level AO reactor, by anaerobism, anoxic, aerobic
Reaction, organic matter, ammonia nitrogen concentration further decrease, be discharged pH=8.3, COD content 989mg/L, ammonia-nitrogen content 22mg/L, SS
Content 22665mg/L；
(5) MBR reactor: by biochemical reaction and film filtration in the MBR reactor, the suspended matter of water outlet, ammonia nitrogen,
COD reduces obvious, water outlet pH=7.3, COD content 640mg/L, ammonia-nitrogen content 15mg/L, SS content 5mg/L；
(6) nanofiltration equipment: nanofiltration equipment operation pressure is 6MPa, and the rate of recovery 85% is discharged pH=6.9, COD content
50.2mg/L, ammonia-nitrogen content 5mg/L, SS content 3.2mg/L.
(7) reverse osmosis equipment: reverse osmosis equipment operating pressure is 15MPa, and the rate of recovery 90% is discharged pH=6.5, COD
Content 4.5mg/L, ammonia-nitrogen content 0.76mg/L, SS content 0.3mg/L.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. a kind of system for handling biomass pyrolytic water characterized by comprising
Pyrolysis reactor, condensing plant, oily water separating equipment, grid, conditioning tank, oil removal by air bubbling equipment, photocatalysis oxidation reaction
Equipment, anaerobic reactor, second level A/O reactor, MBR reactor, nanofiltration equipment and reverse osmosis equipment；Wherein, the pyrolysis is anti-
Device is answered to be equipped with biomass inlet, pyrolytic carbon outlet, concentrated water entrance, combustible gas entrance and gas vent, the gas vent and institute
Condensing plant is stated, the condensing plant is respectively equipped with pyrolysis gas outlet and oil water mixture outlet, the oil water mixture outlet
The oily water separating equipment is connected, the oily water separating equipment is respectively equipped with pyrolysis oil export and pyrolysis water out, the pyrolysis
Water out and the grid, conditioning tank, oil removal by air bubbling equipment, photocatalysis oxidation reaction equipment, anaerobic reactor, second level A/O are anti-
Device, MBR reactor, nanofiltration equipment and reverse osmosis equipment is answered to be sequentially connected with；
The anaerobic reactor is equipped with exhaust outlet, which connect with the combustible gas entrance of the pyrolysis reactor；
The nanofiltration equipment and the outlet of the concentrated water of reverse osmosis equipment are connect with the concentrated water entrance of the pyrolysis reactor；
The reverse osmosis equipment is equipped with water out up to standard.
2. the system of processing biomass pyrolytic water according to claim 1, which is characterized in that the oil removal by air bubbling equipment is adopted
With shallow-layer ion air bearing waste-oil scavenger.
3. the system of processing biomass pyrolytic water according to claim 1 or 2, which is characterized in that the oil removal by air bubbling is set
It is standby to be equipped with coagulant adding apparatus.
4. the system of processing biomass pyrolytic water according to claim 1 or 2, which is characterized in that the pyrolytic reaction is set
It is standby interior equipped with spraying mechanism, it is connect with the concentrated water entrance.
5. the system of processing biomass pyrolytic water according to claim 1 or 2, which is characterized in that the photochemical catalytic oxidation
The ultraviolet lamp that power is 1~60KW is equipped in consersion unit.
6. the system of processing biomass pyrolytic water according to claim 1 or 2, which is characterized in that described
The anaerobic reactor uses UASB anaerobic reactor.
7. the system of processing biomass pyrolytic water according to claim 1 or 2, which is characterized in that the MBR reactor is adopted
With submerged hollow fiber membrane, the material of hollow-fibre membrane is polyvinylidene fluoride film, and trapped particles partial size is 0.02um.
8. a kind of method for handling biomass pyrolytic water, which is characterized in that the described in any item systems of claim 1 to 7 are used,
The following steps are included:
Biomass enters pyrolysis reactor, and the gas of generation enters condensing plant, generates pyrolysis gas and grease respectively after condensing
Mixture, pyrolysis gas output utilize, and oil water mixture enters oily water separating equipment, isolate pyrolysis oil and pyrolysis water, pyrolysis oil
Output recycles, and the pyrolysis water enters conditioning tank, oil removal by air bubbling equipment, photocatalysis oxidation reaction equipment, anaerobism through grid
Reactor, second level A/O reactor, MBR reactor, nanofiltration equipment, reverse osmosis equipment are successively handled, reverse osmosis equipment processing
Water outlet afterwards is water up to standard；
The fuel gas that the anaerobic reactor generates enters pyrolysis reactor through the combustible gas entrance of the pyrolysis reactor and makees
For combustion gas；
The concentrated water of the nanofiltration equipment and the concentrated water of reverse osmosis equipment enter the pyrolysis reactor burning disposal.
9. the method for biomass pyrolytic water process according to claim 8, which is characterized in that in the method, to air bearing
Waste-oil scavenger adds flocculant, and the flocculant is polyacrylamide, aluminium polychloride, bodied ferric sulfate, polymeric aluminum sulfate iron
One or more of；
In the method, the oxidant used in the photocatalytic oxidation reactor is in hydrogen peroxide, sodium hypochlorite, chlorine dioxide
One or more, oxidant add quality be wastewater quality 0.1~10%, light application time be 10~300mins, the light
The power of ultraviolet lamp used is 1~60KW in catalyst oxidation reactor.
10. the method for biomass pyrolytic water process according to claim 8 or claim 9, which is characterized in that in the method, institute
The reaction temperature for stating anaerobic reactor is 35 ± 1 DEG C；
The concentrated water that the nanofiltration equipment and reverse osmosis equipment generate all enters the pyrolysis reactor in a manner of spraying.
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