CN102674546A - Two-stage anaerobic reactor and method suitable for blue-green algae fermentation - Google Patents
Two-stage anaerobic reactor and method suitable for blue-green algae fermentation Download PDFInfo
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- CN102674546A CN102674546A CN2012101725521A CN201210172552A CN102674546A CN 102674546 A CN102674546 A CN 102674546A CN 2012101725521 A CN2012101725521 A CN 2012101725521A CN 201210172552 A CN201210172552 A CN 201210172552A CN 102674546 A CN102674546 A CN 102674546A
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Abstract
The invention relates to a two-stage anaerobic reactor and method suitable for blue-green algae fermentation. The anaerobic reactor (2) is of a double-layer sleeve-type sealing structure, and comprises a first-stage reaction chamber (I) and a second-stage reaction chamber (II), wherein the first-stage reaction chamber (I) is arranged in the center of the anaerobic reactor (2) and is in a sealed cylindrical shape so as to form an inner chamber; the second-stage reaction chamber (II) is wound outside the first stage reaction chamber (I) and is in a sealed cylindrical shape so as to form an outer chamber; and the second-stage reaction chamber (II) is communicated with the first-stage reaction chamber (I) by virtue of a water outlet (21) arranged at the upper part of the first-stage reaction chamber (I). A solid-liquid separation component is arranged at the upper part of the first-stage reaction chamber, so that a sludge-water separation area is formed; the solid retention time is prolonged, the digestion effect is improved, and the enough sludge concentration in the reaction chambers can be guaranteed; the first-stage reaction chamber is internally provided with an intermittent stirring device; and the second-stage reaction chamber is provided with an elastic filler, so that microorganism enrichment is enhanced, and the specific surface area of reaction is increased.
Description
Technical field
The present invention is a kind of anaerobic reactor that is applicable to that the blue-green algae anaerobically fermenting is handled, and belongs to field of environment engineering technology.
Background technology
In recent years, Taihu Lake basin water body eutrophication is very serious, causes blue-green alga bloom frequently to break out, and water quality goes from bad to worse.At present, trying to explore effectively to remove the algae way, chemical algae removing only rests on the experimental study stage; Biological and ecological is repaired also topical application among a small circle only of algae control method; Therefore, break out to blue-green alga bloom in Taihu Lake, the main method that adopts machinery to salvage is removed algae from the lake; Reduce the amount of algae in the water, thus the harm that alleviates blue-green alga bloom.The blue-green algae of salvaging disembarkation concentrates back organic concentration and solids content height, adopts anaerobic technique that it is handled not only and can make its minimizing, and can reclaim biomass energy, effectively cuts down pollutent and prevents secondary pollution.Therefore, adopting Anaerobic Microbiological Treatment Technology that high organic concentration, highly filled concentrated blue-green algae are handled worldwide becomes research day by day and uses focus.But adopt the present high efficiency anaerobic reactor of developing; All can be applicable to the wastewater treatment of high organic concentration, low solid content like up-flow anaerobic sludge blanket (UASB), inner circulation reactor (IC), expanded granular bed (EGSB) etc., be inappropriate for the anaerobic treatment of the algae or the algae slurry of high solid content.The invention provides a kind of high efficiency anaerobic reactor blue algae fermentation, that can realize Anaerobic processes phase-splitting or segmentation control that is applicable to.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of two-part anaerobic reactor and method thereof of suitable blue algae fermentation, can the Anaerobic processes of blue-green algae be carried out the control of segmentation or phase-splitting, flexibly operation.
Technical scheme: the present invention is a kind of treatment technology that is applicable to the flexible and efficient operation of blue algae fermentation, and this anaerobic reactor is a double braid covering cartridge type sealed structure, comprises first order reaction chamber, second order reaction chamber; Wherein,
The first order reaction chamber is positioned at the central authorities of this anaerobic reactor, and is cylindrical for what seal, constitutes inner room; The second order reaction chamber is surrounded on the first order reaction outside; Be the annulus cylindricality of sealing, constitute the mistress, the second order reaction chamber is connected with the water outlet of first order reaction chamber through top, first order reaction chamber.
The indoor bottom of first order reaction is an intake zone, and the middle part is the anaerobic reaction district, and top is the mud-water separation district, and the top is the water outlet exhaust area; The first order reaction chamber interior is provided with the stirring rake axle,
First order reaction chamber bottom is provided with second shore pipe intermittently, second intermittently the shore pipe top be provided with the water inlet pipe that is connected with the water distributor of boring a hole; Top, first order reaction chamber is provided with top end cover, and top end cover is provided with the first gas collection mouth, and agitator motor also is equipped with at the top, and this agitator motor links to each other with the stirring rake axle; Be provided with guiding cone in mud-water separation district central authorities, this guiding cone central openings is enclosed within outside the stirring rake axle, and is fixed on the top end cover, and guiding cone top and bottom have the passage that is used for gas evolution, and the water outlet exhaust area at top is provided with overflow weir and water leg.
The second order reaction chamber is divided into five compartments that are connected in series successively through dividing plate along circumference, and the volume sum of first compartment and second compartment is more than or equal to 1/2 of second order reaction chamber cubic capacity; The volume of the 3rd compartment, the 4th compartment, the 5th compartment successively decreases by water (flow) direction successively;
In each compartment, behind dividing plate, establish flow deflector respectively by water (flow) direction, simultaneously in each compartment, install elastic filler additional, each compartment top is provided with the second gas collection mouth, and each cell bottom is provided with first shore pipe intermittently, and the 5th upper compartment sets out water pipe.
The reaction method of the two-part anaerobic reactor of suitable blue algae fermentation of the present invention comprises the steps:
Raw material gets into the first order reaction chamber by water inlet pipe perforated water distributor earlier; Anaerobic reaction district in middle and lower part, first order reaction chamber; Under the effect of stirring rake, fully contact and be evenly distributed with the anaerobic sludge of first order reaction chamber; Solid is rapid acidication in this zone, gets into the top of first order reaction chamber then with the form of upwelling, the mud-water separation district of top, first order reaction chamber for being made up of pool wall and guiding cone; Anaerobic sludge and solid continue reaction with water sepn after middle and lower part, first order reaction chamber is fallen back in action of gravity in this zone, guaranteed indoor enough sludge concentrations of first order reaction and solid retention time; The isolated liquid in mud-water separation district will be via overflow weir and water leg after water outlet gets into the second order reaction chamber; And passing through each first compartment, second compartment, the 3rd compartment, the 4th compartment and the 5th compartment respectively with the plug-flow mode successively, the rising pipe that in each compartment, behind microbial process, is provided with by the 5th upper compartment is discharged.
Its principle is: algae or algae slurry at first get into the first order reaction chamber through water inlet pipe and water distribution system; With the form of upwelling through being rich in the reaction chamber of anaerobion; Make solid form the voltaile fatty acid (VFAs) of short chain at this regional acidication; Degraded part high-enriched organics produces biogas.The indoor whipping appts that is provided with of first order reaction through intermittently stirring, has impelled anaerobic sludge fully to contact with blue-green algae, increases mass transfer; Solid proportion is bigger; Automatically fall back to middle and lower part, first order reaction chamber through the mud-water separation district on top and proceed reaction; Strengthened solid retention time, mud is got back to the continuation of first order reaction chamber through the mud-water separation district and is participated in reaction simultaneously, has guaranteed the required sludge concentration in first order reaction chamber; The bottom is through first order reaction chamber shore pipe spoil disposal at intermittence.Biogas is discharged from the biogas pipe through the collection chamber at top, and the waste water after the processing is discharged through water leg through the overflow weir on top and got into the second order reaction chamber.The second order reaction chamber is divided into five compartments, and the volume of first compartment, second compartment is bigger, and the volume of the 3rd compartment, the 4th compartment, the 5th compartment successively decreases successively, on water (flow) direction, forms the compartment that is one another in series.Upper and lower traverse baffle is set in each compartment; Material integral body travels forward with the plug-flow mode; Can make the anaerobion population realize producing the acid phase and produce separating of methane phase along the different compartments of water (flow) direction, set up elastic filler as microbe carrier, help microbial enrichment through the second order reaction chamber interior in the second order reaction chamber; Increase living weight in the reactor drum, increased the specific surface area of anaerobic reaction.Reactor monolith also will progressively form on water (flow) direction produces acid and product methane separating mutually.Each compartment top is provided with effuser, and the bottom is provided with intermittently shore pipe, and the waste water after the processing is discharged through the rising pipe that is arranged at last compartment.
Beneficial effect:
(1) this integrated form anaerobic reactor integrates multiple reactor drum; Special property to algae that concentrated or algae slurry itself; Set up the I and II reaction chamber; And increase intermittently whipping appts in the first order reaction chamber, and strengthen mass transfer, be suitable for handling high organic concentration, highly filled algae or algae slurry.
(2) this anaerobic reactor operation scheme is flexible, can carry out different operation scheme according to the different feeds situation.Reasonable volume ratio through first order reaction chamber, second order reaction chamber and each compartment of second order reaction chamber interior is provided with; Has the good characteristic that is separated; Realized being separated of product acid, aerogenesis in the anaerobic biological treatment process; So just can reactor drum be divided into a plurality of stages according to the difference of input concentration moves flexibly; Both can reaction process be controlled to be two-part is that the first order reaction chamber is cleared up and got into the second order reaction chamber behind the part material and continue to clear up, also can be in the first order reaction chamber or the fore portion compartment of first order reaction chamber and second order reaction chamber as the sour phase region of product.
(3) this anaerobic reactor has been set up the solid-liquid separation assembly in the first order reaction chamber; Make that muddy water obtains at top, first order reaction chamber separating; Both guaranteed the sludge concentration of the indoor needs of first order reaction; Make the macrobead solid retention time do not digested be much higher than hydraulic detention time again, make that solid has obtained abundant digestion in the waste water.
(4) this anaerobic reactor is through with difference in functionality district series connection, and sets up elastic filler in that second order reaction is indoor, as microbe carrier; Help biomagnification; Increase living weight in the reactor drum, increase the anaerobic reaction specific surface area, improved the digestive efficiency and the gas producing efficiency of reactor drum.
Description of drawings
Fig. 1 is the structural representation of anaerobic reactor;
Fig. 2 is the vertical view of anaerobic reactor;
Have among the figure: first order reaction chamber I; Second order reaction chamber II; The first gas collection mouth 1a; The second gas collection mouth 1b; Anaerobic reactor 2; Elastic filler 3; Water inlet pipe 4; Perforation water distributor 5; Stirring rake axle 6; Anaerobic reaction district 7; Overflow weir and water leg 8; Guiding cone 9; Mud-water separation district 10; First shore pipe 11 intermittently; Second shore pipe 12 intermittently; Rising pipe 13; Top end cover 14; Agitator motor 15; First compartment 16; Second compartment 17; The 3rd compartment 18; The 4th compartment 19; The 5th compartment 20; Water outlet 21; Through dividing plate 23; Flow deflector 24.
Embodiment
Below in conjunction with accompanying drawing the present invention is further specified.
The present invention is a kind of treatment technology that is applicable to the flexible and efficient operation of blue algae fermentation.Reactor body is divided into two parts, and the centre is the first order reaction chamber, and the outside is the second order reaction chamber, and first order reaction chamber and second order reaction chamber common sparing pool wall are first order reaction chamber pool wall, and with one heart.
This technology integrates multiple reactor drum, fully to the high organic concentration, the highly filled characteristics that concentrate the algae slurry, sets up the I and II reaction chamber, has higher organic loading and solid loading.The solid-liquid separation assembly is set up on top, first order reaction chamber, forms the mud-water separation district, has both improved solid retention time, strengthens the digestion effect, guarantees enough sludge concentrations in the reaction chamber simultaneously; Elastic filler is set up in the second order reaction chamber, strengthens microbial enrichment, increases the reaction specific surface area; During the actually operating operation, can I and II reaction chamber volume ratio and each compartment volume ratio of second order reaction chamber, flexible operation scheme rationally be set according to input concentration.
Bottom, first order reaction chamber is a right cylinder, is provided with water inlet pipe and water distribution system, and current flow with the form of upwelling; Top is the back taper bell mouth shape, in establish the taper guiding cone as the solid-liquid separation assembly, the perforate of cone top, as gas passage, first order reaction chamber top pool wall and guiding cone constitute the mud-water separation district jointly; The indoor intermittently stirring rake that is equipped with of first order reaction, buncher is fixed in the top seal lid; Reaction chamber bottom is provided with obconic sludge settling district and shore pipe intermittently; Edge, top, first order reaction chamber is provided with overflow weir and water leg, and center upper portion is a collection chamber, and the top is established sealing cover and is provided with the gas collection mouth.
The second order reaction chamber is positioned at the outside of reactor body, is divided into five compartments, and the volume of first compartment, second compartment is bigger, and the two volume sum is not less than 1/2 of second order reaction chamber cubic capacity; The volume of the 3rd compartment, the 4th compartment, the 5th compartment successively decreases by water (flow) direction successively, and three's volume sum is not more than 1/2 of second order reaction chamber cubic capacity; Each compartment interior all hangs elastic filler; The second order reaction chamber is one another in series five compartments through upper and lower traverse baffle is set in each compartment, and each compartment top is provided with effuser, and the bottom is provided with intermittently shore pipe, and the 5th upper compartment sets out water pipe.
Algae or algae slurry at first get into the first order reaction chamber through water inlet pipe and water distribution system; With the form of upwelling through being rich in the reaction chamber of anaerobion; Make the voltaile fatty acid (VFAs) of solid at this regional acidication formation short chain, degraded part high-enriched organics produces biogas.The indoor whipping appts that is provided with of first order reaction through intermittently stirring, has impelled anaerobic sludge fully to contact with blue-green algae, increases mass transfer; Solid proportion is bigger; Automatically fall back to middle and lower part, first order reaction chamber through the mud-water separation district on top and proceed reaction; Strengthened solid retention time, mud is got back to the continuation of first order reaction chamber through the mud-water separation district and is participated in reaction simultaneously, has guaranteed the required sludge concentration in first order reaction chamber; The bottom is through first order reaction chamber shore pipe spoil disposal at intermittence.Biogas is discharged from the biogas pipe through the collection chamber at top, and the waste water after the processing is discharged through water leg through the overflow weir on top and got into the second order reaction chamber.The second order reaction chamber is divided into five compartments, and the volume of first compartment, second compartment is bigger, and the volume of the 3rd compartment, the 4th compartment, the 5th compartment successively decreases successively, on water (flow) direction, forms the compartment that is one another in series.Upper and lower traverse baffle is set in each compartment; Material travels forward with the plug-flow mode; Can make the different compartments of anaerobion population length direction realize producing the acid phase and produce separating of methane phase, make out of phase envrionment conditions single-minded, help improving reaction efficiency along the second order reaction chamber.The second order reaction chamber interior sets up elastic filler as microbe carrier simultaneously, helps microbial enrichment, has increased the specific surface area in the anaerobic reactor, thereby increases living weight in the reactor drum, can improve reaction efficiency.Each compartment top is provided with effuser, and the bottom is provided with intermittently shore pipe, and the waste water after the processing is discharged through the rising pipe that is arranged at last compartment.
Referring to Fig. 1, shown in accompanying drawing, reactor body 2 is a cylindricality, is divided into first order reaction chamber I and second order reaction chamber II, is first order reaction chamber I in the middle of the body of pond, and outer shroud is second order reaction chamber II.I bottom, first order reaction chamber is provided with water inlet pipe 4 and water distribution system 5; The bottom is provided with sludge settling district and shore pipe 12 intermittently, and there is stirring rake axle 6 middle and lower part 7, and the edge, top is provided with overflow weir and water leg 8; Center upper portion is established guiding cone 9; Periphery forms mud-water separation district 10, and the top is established end cover 14 and is provided with the first gas collection mouth 1a, end cap top dress agitator motor 15.Second order reaction chamber II is divided into five compartments, and the volume of first compartment 16, second compartment 17 is bigger, and the volume of the 3rd compartment 19, the 4th compartment 20, the 5th compartment 21 successively decreases successively, on water (flow) direction, forms the compartment that is one another in series.Dividing plate 23 is set, flow deflector 24 in each compartment.Each compartment top is provided with the second gas collection mouth 1b, and the bottom is provided with intermittently shore pipe 11, and the waste water after the processing is discharged through the rising pipe 13 that is arranged at last compartment.
The volume of second order reaction chamber II first compartment 16, second compartment 17 is bigger, third and fourth, the volume of five compartments successively decreases successively, on water (flow) direction, forms the compartment that is one another in series.Dividing plate 23 and flow deflector 24 are set in each compartment; The different compartments of water (flow) direction realizes producing the acid phase and produces separating of methane phase along the second order reaction chamber; Than the further acidogenic fermentation of the compartment of front; Producing methane fermentation at the compartment of back, degradation of organic substances, integral reactor also will progressively form on water (flow) direction and produce acid and product methane separating mutually.Each compartment top is provided with gas collection mouth 1b, and the waste water after the processing is discharged through the rising pipe 13 that is arranged at last compartment.Mud is discharged through the shore pipe 11 that is arranged at each compartment.
The above is merely preferred embodiments of the present invention; Protection scope of the present invention is not exceeded with above-mentioned embodiment; As long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (4)
1. the two-part anaerobic reactor of a suitable blue algae fermentation, it is characterized in that: this anaerobic reactor (2) is a double braid covering cartridge type sealed structure, comprises first order reaction chamber (I), second order reaction chamber (II); Wherein,
First order reaction chamber (I) is positioned at the central authorities of this anaerobic reactor (2); Cylindrical for what seal; Constitute inner room, second order reaction chamber (II) is surrounded on outside, first order reaction chamber (I), is the annulus cylindricality of sealing; Constitute the mistress, second order reaction chamber (II) is connected through the water outlet (21) on top, first order reaction chamber (I) with first order reaction chamber (I).
2. the two-part anaerobic reactor of suitable blue algae fermentation according to claim 1 is characterized in that: the bottom in first order reaction chamber (I) is an intake zone, and the middle part is anaerobic reaction district (7), and top is mud-water separation district (10), and the top is the water outlet exhaust area; Inside, first order reaction chamber (I) is provided with stirring rake axle (6),
First order reaction chamber (I) bottom is provided with second shore pipe (12) intermittently, second intermittently shore pipe (12) top be provided with the water inlet pipe (4) that is connected with the water distributor of boring a hole (5); Top, first order reaction chamber (I) is provided with top end cover (14), and top end cover (14) is provided with the first gas collection mouth (1a), and agitator motor (15) also is equipped with at the top, and this agitator motor (15) links to each other with stirring rake axle (6); Central authorities are provided with guiding cone (9) in mud-water separation district (10); This guiding cone (9) central openings is enclosed within outside the stirring rake axle (6); And be fixed on the top end cover (14); Guiding cone (9) top and bottom have the passage that is used for gas evolution, and the water outlet exhaust area at top is provided with overflow weir and water leg (8).
3. the two-part anaerobic reactor of suitable blue algae fermentation according to claim 1; It is characterized in that: second order reaction chamber (II) is divided into five compartments that are connected in series successively through dividing plate (23) along circumference, and the volume sum of first compartment (16) and second compartment (17) is more than or equal to 1/2 of second order reaction chamber (II) cubic capacity; The volume of the 3rd compartment (18), the 4th compartment (19), the 5th compartment (20) successively decreases by water (flow) direction successively;
In each compartment, behind dividing plate, establish flow deflector (24) respectively by water (flow) direction; In each compartment, install simultaneously elastic filler (3) additional; Each compartment top is provided with the second gas collection mouth (1b); Each cell bottom is provided with first shore pipe (11) intermittently, and the 5th compartment (20) top sets out water pipe (13).
4. the reaction method of the two-part anaerobic reactor of a suitable blue algae fermentation as claimed in claim 1, it is characterized in that: this method comprises the steps:
Raw material gets into first order reaction chamber (I) by water inlet pipe (4) perforated water distributor (5) earlier; The anaerobic reaction district (7) of (I) middle and lower part in the first order reaction chamber; Under the effect of stirring rake (6), fully contact and be evenly distributed with the anaerobic sludge of first order reaction chamber (I); Solid is rapid acidication in this zone; Get into the top of first order reaction chamber (I) then with the form of upwelling; Top, first order reaction chamber is the mud-water separation district (10) that is made up of pool wall and guiding cone (9), and anaerobic sludge and solid continue reaction with water sepn after middle and lower part, first order reaction chamber (I) is fallen back in action of gravity in this zone, guaranteed enough sludge concentration and solid retention times in the first order reaction chamber (I); The isolated liquid in mud-water separation district will be via overflow weir and water leg (8) after water outlet (21) gets into second order reaction chamber (II); And passing through each first compartment (16), second compartment (17), the 3rd compartment (18), the 4th compartment (19) and the 5th compartment (20) respectively with the plug-flow mode successively, the rising pipe (13) that in each compartment, behind microbial process, is provided with by the 5th upper compartment is discharged.
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Cited By (2)
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| CN103408135A (en) * | 2013-08-30 | 2013-11-27 | 桂林旺隆达环保能源开发有限公司 | Anaerobic treatment septic tank for kitchen sewage and fecal sewage |
| CN103966080A (en) * | 2014-05-08 | 2014-08-06 | 同济大学 | Enrichment sampling device for microorganisms in water of water supply pipe network |
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| CN101386449A (en) * | 2008-08-20 | 2009-03-18 | 东南大学 | Anaerobic reactor for processing high organic concentration and high solid content waste water |
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| CN103966080B (en) * | 2014-05-08 | 2016-08-24 | 同济大学 | Microorganism enrichment sampler in a kind of water supply network pipe network water |
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