CN101098831B - Anaerobic treatment apparatus and method - Google Patents

Anaerobic treatment apparatus and method Download PDF

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Publication number
CN101098831B
CN101098831B CN200580046433XA CN200580046433A CN101098831B CN 101098831 B CN101098831 B CN 101098831B CN 200580046433X A CN200580046433X A CN 200580046433XA CN 200580046433 A CN200580046433 A CN 200580046433A CN 101098831 B CN101098831 B CN 101098831B
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CN
China
Prior art keywords
reaches
anaerobism
solid
waste water
mud
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Expired - Fee Related
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CN200580046433XA
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Chinese (zh)
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CN101098831A (en
Inventor
小滨文夫
加藤明德
则武繁
今林诚二
上地和男
铃木哲史
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ASAHI BREWERIES ENGINEERING Ltd
Asahi Breweries Ltd
Sumitomo Heavy Industries Ltd
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Priority to JP004180/2005 priority Critical
Priority to JP2005004180A priority patent/JP2006051490A/en
Application filed by ASAHI BREWERIES ENGINEERING Ltd, Asahi Breweries Ltd, Sumitomo Heavy Industries Ltd filed Critical ASAHI BREWERIES ENGINEERING Ltd
Priority to PCT/JP2005/012771 priority patent/WO2006075414A1/en
Publication of CN101098831A publication Critical patent/CN101098831A/en
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Publication of CN101098831B publication Critical patent/CN101098831B/en
Expired - Fee Related legal-status Critical Current
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • C02F3/2846Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M33/00Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

An anaerobic treatment apparatus comprising side walls partitioning a space for accommodating anaerobic sludge; an upflow zone provided to cause wastewater to flow upward through the anaerobic sludge to thereby effect anaerobic treatment thereof; a wastewater introduction part for introducing wastewater in the upflow zone; a solid/liquid separation zone for separating solid matter from a treated water having been treated in the upflow zone and having overflown an upper end of the upflow zone; and a fluid circulation path connecting the solid/liquid separation zone with the upflow zone so that any solid matter having been separated in the solid/liquid separation zone is guided downward.

Description

Anaerobism treatment unit and anaerobism treatment process
Technical field
The present invention relates to anaerobism treatment unit and anaerobism treatment process.
Background technology
As to containing the anaerobism treatment unit that organic waste water is handled, known have use granular anaerobism mud to decompose organic UASB (up-flow anaerobic sludge blanket) treatment unit and EGSB (expanded granular sludge bed) treatment unit (for example with reference to patent documentation 1) in the waste water.As the example of these devices, in Fig. 7, represented the anaerobism treatment unit that Fig. 3 put down in writing of patent documentation 1.The device that this anaerobism treatment unit 701 is filler particles mud among sludge-filled 703 of bottom in groove, utilize granule sludge the waste water that is imported by waste water introduction part 705 to be handled and discharged from treating water discharge portion 707.Anaerobism treatment unit 701 possesses by making the waste water mobile upper reaches portion 702 that makes progress behind the granule sludge, is provided with on the top of upper reaches portion 702 treating water, granule sludge and the gas that produced are carried out isolating three phase separation portion 715.The granule sludge that is attached with gas in the bottom of upper reaches portion 702 rises with the gas lift effect by upwards mobile.The granule sludge that rises collides in gas collision portion 709, by colliding separated from the gas and sedimentation once more.Gas separated is caught by gas entrapment portion 711, and discharges from gas outlet pipe 713.
On the other hand, treating water is discharged from treating water discharge portion 707 by between gas collision portion 709 and the gas entrapment portion 711.Like this, in anaerobism treatment unit 701, finish gas, granule sludge and treating water are carried out isolating three phase separation.
Patent documentation 1: Japanese kokai publication hei 11-128979 communique
In anaerobism treatment unit 701, in the topmost 702a of upper reaches portion 702 mobile way, three phase separation portion 715 is set at waste water, the granule sludge of rising is collided in gas collision portion 709, thereby separate.Part at gas collision portion 709 unsegregated granule sludges has arrived topmost 702a, and is blended into the treating water from treating water discharge portion 707 and is discharged from.Therefore, in anaerobism treatment unit 701,, then must make the length of vertical direction of upper reaches portion 702 fully long, thereby reduce the granule sludge that reaches topmost 702a if want to guarantee necessary separation performance.Therefore, the low level (Low-Profile) that is difficult to implement device according to anaerobism treatment unit 701.In addition, for the low level of groove, also considered in the separator tank that is provided with three-phase separating device in addition, to carry out (for example with reference to patent documentation 1 Fig. 1, Fig. 2), but must be used to be provided with the space of this separator tank, thereby be difficult to the miniaturization of implement device.
Summary of the invention
Therefore, one aspect of the invention is low level and the easy anaerobism treatment unit of miniaturization and the anaerobism treatment process of device.
Anaerobism treatment unit of the present invention is to use anaerobism mud to handle the anaerobism treatment unit of waste water, and it possesses: have the sidewall that the space of taking in anaerobism mud is divided and waste water is made progress by anaerobism mud and flow to carry out the upper reaches portion that anaerobism is handled; Waste water is directed into the waste water introduction part of upper reaches portion; With solid matter from processed in upper reaches portion and flow through isolating solid-liquid separation portion the treating water of upper end of upper reaches portion; With solid-liquid separation portion be connected with upper reaches portion, and will separated solids matter guides in solid-liquid separation portion below the liquid circulation path.
Above-mentioned anaerobism treatment unit possesses solid-liquid separation portion and does as a whole, therefore do not need to be provided with in addition solid-liquid separation tank, can dwindle the space is set. in addition, the solid-liquid separation portion of above-mentioned anaerobism treatment unit separates solid matter from the treating water that flows through upper reaches portion upper end. therefore, even if solid matter has arrived the upper end of upper reaches portion, but owing to can from treating water, separate afterwards, therefore also can irrespectively guarantee separation performance with the height of the vertical direction of upper reaches portion. therefore, according to above-mentioned anaerobism treatment unit, can reduce the height of the vertical direction of upper reaches portion, can be with whole device low level. in addition, among the present invention, the upper end of upper reaches portion is meant the end of the vertical direction of separating upper reaches portion spatial parts, be the end that is positioned at the extreme higher position. in addition, so-called here solid matter is meant suspended matter contained in the waste water that is fed to upper reaches portion (particulate that suspended solid material: 2mm is following), waste water is carried out the anaerobism mud that anaerobism is handled, in the mixture of perhaps above-mentioned suspended matter and above-mentioned anaerobism mud any.
In addition, in above-mentioned anaerobism treatment unit owing to be provided with the liquid circulation path, therefore at the isolating solid matter of solid-liquid separation portion with below the solid matter of rising is back in different paths.Even if contain anaerobism mud in the separated solids matter thus, the anaerobism mud in the solid matter in anaerobism mud in the solid matter downwards and the rising can not mix existence yet.In addition, according to above-mentioned anaerobism treatment unit, for example suspended matter etc. utilizes necessary solid matter also can be directed to the below by the liquid circulation path again.
In addition, the liquid circulation path of anaerobism treatment unit of the present invention can more be connected the ratio wastewater introduction part of solid-liquid separation portion and upper reaches portion by the position of below.
In this anaerobism treatment unit, be back to the position of ratio wastewater introduction part below more leaning at the isolating solid matter of solid-liquid separation portion.Then, the anaerobism mud that is accommodated in upper reaches portion is by replacing up and down, and it is even that the activity of anaerobism mud becomes.In addition, the liquid circulation path is the path different with upper reaches portion, owing to connecting the below of solid-liquid separation portion and waste water introduction part, therefore is subjected to the upper reaches influence of upper reaches portion, in the liquid circulation path katabatic drainage takes place.Thereby settled solid matter in the liquid circulation path is because gravity and katabatic drainage and below being directed to swimmingly.In addition, according to this anaerobism treatment unit, for example suspended matter etc. utilizes necessary solid matter also can be directed to the below by the liquid circulation path again.
In addition, the position above the liquid circulation path of anaerobism treatment unit of the present invention can also more be leaned on the anaerobism Sludge Bed that forms in the sedimentation of the bottom of upper reaches portion than anaerobism mud of solid-liquid separation portion and upper reaches portion is connected.
In this anaerobism treatment unit, solid matter below being back in the liquid circulation path can not be back to upper reaches portion swimmingly owing to can not be subjected to the big resistance of anaerobism Sludge Bed on the position above more leaning on than anaerobism Sludge Bed, therefore can suppress solid matter and be stuck in the liquid circulation path.In addition, according to this anaerobism treatment unit, for example suspended matter etc. utilizes necessary solid matter also can be directed to the below by the liquid circulation path again.
In addition, the feature of anaerobism treatment unit of the present invention can also be: the upper end of upper reaches portion comprises the upper end of sidewall, and solid-liquid separation portion is arranged on the peripheral part of upper reaches portion according to the mode of the upper end that surrounds upper reaches portion.
Like this, become bubble and on the liquid level of the topmost central part of upper reaches portion, from solid matter, separate attached to the gas on the mud.Like this, solid matter loss of buoyance and sedimentation once more, thus be back to the below of upper reaches portion.In addition, there is not sedimentation and the solid matter that flows through upper reaches portion end is easy to sedimentation owing to the influence of buoyant gas is very little, therefore yet sedimentation in the liquid circulation path swimmingly, thereby separate solid material and treating water efficiently at this.
In addition, the feature of anaerobism treatment unit of the present invention can also be, solid-liquid separation portion has directing plate, this directing plate is provided with according to the mode of separating with upper reaches portion and surround around the upper end of this upper reaches portion, and the solid matter that this directing plate will flow through upper reaches portion upper end is directed in the liquid circulation path.By directing plate so is set, the solids pledge is imported in the liquid circulation path efficiently, and guides to the below efficiently.
In addition, the feature of anaerobism treatment unit of the present invention can also be that the liquid circulation path comprises clearance portion, this clearance portion be by by the sidewall of upper reaches portion and according to surround sidewall around other sidewall institute double team of being arranged of mode branch form.
In addition, the feature of anaerobism treatment unit of the present invention can also be, the liquid circulation path comprises the hollow space of tubular part that extends to the below of waste water introduction part from solid-liquid separation portion.
Feature can also be further have cowling panel, and this cowling panel is arranged on the top of the waste water introduction part of upper reaches portion inside, and being flowing in of the waste water in the portion of upper reaches carried out rectification on the above-below direction.If cowling panel is set in this wise, then waste water etc. flows swimmingly in the portion of upper reaches.
In addition, the feature of anaerobism treatment unit of the present invention can also be further have the taking-up path that settled solid matter in the liquid circulation path is discharged to upper reaches portion outside.Like this, if having the taking-up path, then can prevent that these solid matters are accumulated in the portion of upper reaches with not utilizing necessary solid matter to be discharged to the outside of upper reaches portion again.
In addition, anaerobism treatment process of the present invention is to use anaerobism mud to handle the anaerobism treatment process of waste water, it is characterized in that, waste water is directed into the bottom of the upper reaches portion of taking in anaerobism mud from the waste water introduction part, upwards flow in the portion of upper reaches while the waste water that makes importing and to carry out the anaerobism processing, in the solid-liquid separation portion on the top that is arranged at upper reaches portion, the treating water that flows through the upper end of upper reaches portion after handling through anaerobism is separated with the anaerobism mud of sneaking in this treating water, make the sedimentation and being back in the portion of upper reaches in the path that is arranged with the upper reaches part of in solid-liquid separation portion isolating anaerobism mud.
In addition, in anaerobism treatment process of the present invention, can also make the sedimentation in the path that is arranged with the upper reaches part of in solid-liquid separation portion isolating anaerobism mud, and the ratio wastewater introduction part that is back to upper reaches portion is more by the position of below.
In addition, in anaerobism treatment process of the present invention, can also make the sedimentation in the path that is arranged with the upper reaches part of in solid-liquid separation portion isolating anaerobism mud, and the position of the anaerobism Sludge Bed that forms in the bottom of upper reaches portion precipitation than anaerobism mud that is back to upper reaches portion above more leaning on.
In addition, anaerobism treatment process of the present invention is to use anaerobism mud to handle the anaerobism treatment process of waste water, it is characterized in that, waste water is directed into the bottom of the upper reaches portion of taking in anaerobism mud from the waste water introduction part, upwards flow in the portion of upper reaches while the waste water that makes importing and to carry out the anaerobism processing, in the solid-liquid separation portion on the top that is arranged at upper reaches portion, the treating water that flows through the upper end of upper reaches portion after handling through anaerobism is separated with the suspended matter of sneaking in this treating water, make the sedimentation and be discharged to the outside of upper reaches portion in the path that is arranged with the upper reaches part of in solid-liquid separation portion isolating suspended matter.
Can further understand the present invention fully by following detailed description and accompanying drawing.These only are to be used for example, and non-limiting the present invention.
According to the present invention, low level that can generator and miniaturization are easy to anaerobism treatment unit and anaerobism treatment process.
Description of drawings
Fig. 1 is the sectional view of expression anaerobism treatment unit.
Fig. 2 is the stereographic map of the treatment trough of the state that blocks in vertical direction.
Fig. 3 is a sectional view of representing other anaerobism treatment unit.
Fig. 4 is a stereographic map of representing other anaerobism treatment unit.
Fig. 5 is a sectional view of representing other anaerobism treatment unit.
Fig. 6 is a sectional view of representing other anaerobism treatment unit.
Fig. 7 is the figure of expression anaerobism treatment unit in the past.
Nomenclature
1 anaerobism treatment unit 3,3B, 3C treatment trough
R2 space, R1 space (upper reaches portion) (liquid circulation path)
R3, R4, R5 stream 5 waste water introduction parts
9 outer side walls, 11 inner side-walls
11a upper end 13 midfeathers
15 slot parts, 17 water port
19 cowling panels, 23 solid-liquid separation portions
31,51 tubular part S mud
Rs Sludge Bed SS suspended matter
W waste water W1 treating water
Embodiment
Embodiments of the present invention below are described.In addition, same key element is used prosign, and the multiple explanation is omitted.
Fig. 1 is the sectional view of expression anaerobism treatment unit 1.This anaerobism treatment unit 1 is to use the anaerobism treatment unit of so-called UASB formula, EGSB formula processing mode.Anaerobism treatment unit 1 possesses treatment trough 3 and imports the waste water introduction parts 5 of the waste water W that becomes process object to treatment trough 3 inside.
Followingly treatment trough 3 is described with reference to Fig. 2.Fig. 2 is the stereographic map of the treatment trough 3 when blocking in vertical direction.In Fig. 2, omitted and be used to make waste water introduction part 5 insertion mouth that inserts and the insertion mouth that is used to gas outlet pipe 21 (aftermentioned) is inserted.Treatment trough 3 is the shape of cubic column, and has upper wall 4, diapire 7, outer side wall 9 and separate with the inboard of outer side wall 9 and the inner side-wall 11 that is provided with.Outer side wall 9 according to separate with inner side-wall 11 and surround inner side-wall 11 around mode be provided with, be provided with the gap between outer side wall 9 and the inner side-wall 11.The upper end 11a of inner side-wall 11 does not contact and opening with upper wall 4, and the lower end of inner side-wall 11 does not contact and opening with diapire 7.Outer side wall 9 extends upward setting from the edge part of diapire 7.The upper end of outer side wall 9 does not contact and opening with upper wall 4.In addition, the upper end of outer side wall 9 is in than on the high slightly position of the upper end 11a of inner side-wall 11.Below the inner space that will be surrounded by inner side-wall 11 will be by the clearance portion of outer side wall 9 and inner side-wall 11 double teams as space R2 as R1.
Midfeather 13 is extended downwards towards space R2 by upper wall 4 according to the mode that is clipped between inner side-wall 11 and the outer side wall 9.The lower end of midfeather 13 is in the lower position, upper end than the upper end 11a of inner side-wall 11 and outer side wall 9.The outer wall of outer side wall 9 is provided with slot part 15.The upper end of slot part 15 links to each other with the edge part of upper wall 4.Connect on the side of slot part 15 and be formed with water port 17.Be provided with cowling panel 19 among the R1 of space.Cowling panel 19 is made of a plurality of parts of the tubular with four-sided openings.Above-mentioned a plurality of parts are arranged according to the mode of each wall almost parallel of each side and inner side-wall 11.In addition, each parts with a vertical direction the axle as central shaft, arrange according to the mode that shape is similar.That is, above-mentioned each parts are co-axial tetragon in vertical view.
Referring again to Fig. 1.Waste water introduction part 5 is provided with according to the mode of inserting outer side wall 9 and inner side-wall 11 from the outside of treatment trough 3 in the bottom of treatment trough 3.Waste water introduction part 5 will be imported among the R1 of space by the waste water W that the outside is supplied with.Be provided with a plurality of water outlet 5a in the waste water introduction part 5, make waste water W spray upward from water outlet 5a.
Be filled with granule sludge S (following only be called " mud S ") on the bottom of space R1, exist methane to produce bacterium therein. the methane among the mud S produces bacterium the waste water W that imports from waste water introduction part 5 is carried out the anaerobism processing, decompose the organism among the waste water W, produce gases such as methane gas, carbon dioxide. in addition, the waste water after the processing (hereinafter referred to as " treating water ") W1 is discharged to treatment trough 3 outsides after by water port 17.
The bottom, side of space R2 is provided with conveying end (taking-up path) 24.Conveying end 24 is connected in cock 26, by opening cock 26, will be in the R2 of space settled mud S, suspended matter SS be discharged to the outside of treatment trough 3 by conveying end 24.
Action when below explanation anaerobism treatment unit 1 turns round.When 1 running of anaerobism treatment unit, waste water W imports to the R1 of space from waste water introduction part 5 always.Because waste water W imports constantly, so highly all has been full of waste water W (with treating water W1) until the upper end of outer side wall 9 in the treatment trough 3, thereby form liquid level H.
The waste water W that imports from waste water introduction part 5 sprays up from water outlet 5a, and S mixes with mud, and S is handled by anaerobism by mud.Handle the gas that produces by anaerobism and become bubble, in the R1 of space, rise.By from the ejection of water outlet 5a and the rising of above-mentioned bubble, in the R1 of space, produce the upper reaches, waste water W upwards flows.In addition, by cowling panel 19, waste water W's flows in vertical direction by rectification.Like this, space R1 constitutes upper reaches portion, and inner side-wall 11 constitutes the sidewall of the upper reaches R1 of portion.In addition, the upper end 11a of sidewall 11 constitutes the upper end of the upper reaches R1 of portion.Waste water W flows through space R1 on one side up, and on one side by mud S decomposing organic matter, along with approaching liquid level H, organic concentration reduces gradually.Thus, near the liquid major part the liquid level H becomes organic content treating water W1 seldom.
The bubble of the part of mud (solid matter) S by above-mentioned gas adheres to and is raised, and arrives liquid level H.Mud S float on the liquid level H during, the bubble of gas is separated from mud S.In addition, mud S float over liquid level H during mutually aggegation, particle becomes big and becomes particulate state.Gas separated is trapped in the space between liquid level H and the upper wall 4, by being discharged to the outside behind the gas outlet pipe 21 from mud S.Swimming is directed to midfeather 13 in liquid level H and the mud S that crosses inner side-wall 11 with treating water W1, with treating water W1 in the gap of midfeather 13 and 11 double teams of inner side-wall (hereinafter referred to as " stream R3 ") towards space R2 sedimentation.Like this, midfeather 13 is as directing plate performance function.
The mud S that in stream 3, descends become gas bubble separation state, therefore under this state because gravity and easily to space R2 sedimentation.In addition, flow to space R2, therefore settled mud S processed water W1 extruding in the R2 of space, sedimentation in the R2 of space swimmingly owing to cross the part of the treating water W1 of inner side-wall 11.Remaining treating water W1 is by the gap (hereinafter referred to as " stream R4 ") of midfeather 13 and 9 double teams of outer side wall, and the upper end of crossing outer side wall 9 spills among the space R5 that is surrounded by slot part 15.The treating water W1 to space R5 of overflowing is discharged to the outside of treatment trough 3 after by water port 17.After can also further removing organism, nitrogen component, phosphorus composition by biological treatment, physical chemistry processing etc. as required, the treating water W1 that discharges releases again.
Like this, be arranged on the solid-liquid separation portion 23 that stream R3, stream R4 on the peripheral part of upper end 11a and midfeather 13 constitute separated sludge S and treating water W1.
Settled mud S arrives diapire 7 in the R2 of space, is back to the position of more leaning on the below than the waste water introduction part 5 of space R1 behind the gap 25 by diapire 7 and inner side-wall 11.The mud S that is back to space R1 passes through upper reaches once more, while rise the waste water W that imports from waste water introduction part 5 is carried out the anaerobism processing.Like this, the space R2 that is arranged on the peripheral part of space R1 constitutes the liquid circulation path that mud S is guided to the below.
From carrying out the isolating viewpoint the solid-liquid separation portion 23 well, the lift velocity of the waste water W among the R1 of space etc. preferably sets at 1~10m/h, more preferably be set in 2~6m/h.
In this anaerobism treatment unit 1, because having solid-liquid separation portion 23 on the part of treatment trough 3 does as a whole, therefore do not need to be provided with in addition solid-liquid separation tank. can reduce to be provided with the space. in addition, separated sludge S. therefore the treating water of the 11a on flowing through space R1 of the solid-liquid separation portion 23 of anaerobism treatment unit 1, even if mud S arrives the topmost of space (upper reaches portion) R1, owing to will from treating water, separate afterwards, therefore can irrespectively guarantee separation performance with the height of the vertical direction of the R1 of upper reaches portion. thereby, according to above-mentioned anaerobism treatment unit, can reduce the vertical direction height of the R1 of upper reaches portion, can be with whole device low level. in addition, above-mentioned anaerobism treatment unit 1 is owing to the space R2 that is provided with as the liquid circulation path, therefore the mud S that is back to the below is back to the position of ratio wastewater introduction part 5 below more leaning in the path different with rising mud S. and isolating thus mud S can not mix existence with mud S in the rising, the mud S that is accommodated among the R1 of space replaces up and down always, makes the activity of mud S even.
In addition, in space R2, be subjected to the upper reaches influence that the gas lift effect of the gas that produces is brought in the R1 of space, in the R2 of space, produce katabatic drainage as the liquid circulation path.Thus, settled mud S in the R2 of space is because gravity and katabatic drainage and below being directed to swimmingly, therefore do not need for example to be used for the pump of loopback mud S etc., and also can not occur in becomes the problem that granular mud S is pulverized by pump etc. on the liquid level H.
In addition, the solid-liquid separation portion 23 of above-mentioned anaerobism treatment unit 1 is arranged on the peripheral part of upper end of space R1.Therefore, becoming bubble leaves from mud S on the liquid level H of the center upper portion portion of space R1 attached to the gas on the mud S.Thus, the sedimentation once more of mud S loss of buoyance is back to the below.In addition, not sedimentation and cross the mud S of end 11a here, therefore sedimentation in the R2 of space swimmingly, thereby separated sludge S and treating water W1 efficiently owing to be subjected to that the influence of buoyant gas is very little also to be easy to sedimentation.
In addition, anaerobism treatment unit 1 imports to mud S among the R2 of space efficiently by midfeather 13 is set, and guides to the below efficiently.In addition, anaerobism treatment unit 1 is owing to have cowling panel 19, and therefore waste water W etc. flows swimmingly in the R1 of space.
Then, illustrate that especially waste water W is the lower concentration (working order during CODCr≤1500ppm) for example.In addition, for omitting its explanation with above-mentioned explanation multiple aspect.
When in anaerobism treatment unit 1, importing the waste water W of lower concentration, because the gas that is produced by the anaerobism processing among the R1 of space seldom, therefore the mud S that adheres to the bubble of gas and rise also seldom, thereby, mud S also is distributed in the position of more leaning on the below than the center of space R1 in the running, and the mud S of arrival liquid level H seldom.Owing to turn round under above-mentioned state, the mud S that therefore arrives liquid level H is few, nearly all is suspended matter SS contained among the waste water W in the separated solid matter in solid-liquid separation portion 23.
23 isolating suspended matter SS are fed to space R2 in solid-liquid separation portion, and rest near the below of space R2.Suspended matter SS is supplied in the treatment trough 3 owing to containing in waste water W, so near the suspended matter SS the space R2 below slowly increases increase in density.Therefore, open cock 26, will rest near the suspended matter SS in space R2 below is discharged to treatment trough 3 from conveying end 24 outside every specific time.
Contained suspended matter SS is unsuitable for the anaerobism processing among the waste water W, and is supplied with continuously, therefore is accumulated in the treatment trough 3.According to anaerobism treatment unit 1, owing to have conveying end 24, therefore the solid matter of accumulating can be discharged to the outside, can prevent that suspended matter SS excessively is accumulated in the treatment trough 3.
In addition, as mentioned above, when the organic concentration of the waste water W of process object is low, the gas that is produced tails off, but in anaerobism treatment unit 1, from the gas outlet pipe 21 that is arranged on upper wall 4, the gas that is produced is discharged, beyond liquid level H, can not remove gas.Thus, according to anaerobism treatment unit 1 owing in the way of space R1, can not remove gas, even if thereby the gas that is produced seldom the time, also can form the upper reaches that is produced by the gas lift effect.Thereby anaerobism treatment unit 1 also preferably is suitable for for the processing of the low waste water of the organic concentration of for example CODCr≤1500ppm.
Below, the embodiment of the anaerobism treatment unit 1 of above-mentioned embodiment is described. use waste water W. that anaerobism treatment unit 1 handles lower concentration (CODCr=1000ppm) to be 0.5m having diameter in the present embodiment, the groove virtual height is 7m, useful volume is in the anaerobism treatment unit 1 of treatment trough 3 of 1m3, supplying with CODCr with the speed of 800kg per hour from waste water introduction part 5 is the organic waste water of 1000ppm, making the upper reaches flow velocity is 4.0m/h, carrying out anaerobism handles. and the COD volumetric loading of treatment trough 3 is set at 18~20kg/m3/d, granule sludge is distributed in than the central authorities of space R1 more by the position of below. when carrying out 1 month continuous operation under these conditions, the granule sludge of not discharging almost from water port 17, granule sludge concentration in the groove keeps necessarily can turning round well substantially.
Below, the anaerobism treatment unit 1B of other embodiment of the present invention is described.Fig. 3 is the sectional view of expression anaerobism treatment unit 1B.But Fig. 3 has represented mud S and waste water W and has not been fed to the sectional view of the state in the device.In addition, Fig. 4 represents the stereographic map of the outward appearance of anaerobism treatment unit 1B.
The treatment trough 3B that anaerobism treatment unit 1B is possessed and the difference of treatment trough 3 are the formation as the space R2 of liquid circulation path.The space R2 of treatment trough 3B is made of the hollow space of the inboard of tubular part 31.Tubular part 31 extends to the bottom of inner side-wall 11 from the lower end of solid-liquid separation portion 23, and is exposed to the outside of inner side-wall 11.The end of space R2 is situated between and by the tube inlet 33 of the lower end that is arranged on solid-liquid separation portion 23 stream R3 is connected with stream R4.The other end of space R2 is situated between and is connected with the bottom of space R1 by the pipe outlet 35 of the bottom that is arranged on inner side-wall 11.Pipe outlet 35 is arranged on the position that ratio wastewater introduction part 5 is more leaned on the below.
When anaerobism treatment unit 1B turned round, the mud S that crosses the upper end 11a of inner side-wall 11 was guided by midfeather 13 and enters tube inlet 33, sedimentation in the hollow space (space R2) of tubular part 31 after the sedimentation.Settled mud S turns back to the bottom of space R1 once more from pipe outlet 35 in the R2 of space.
As above-mentioned anaerobism treatment unit 1B,, also can obtain effect and the effect identical with anaerobism treatment unit 1 even if the hollow space by tubular part constitutes the liquid circulation path.
Below, the anaerobism treatment unit 1D of another embodiment of the present invention is described.Fig. 5 is the sectional view of expression anaerobism treatment unit 1D.The difference of this anaerobism treatment unit 1D and above-mentioned anaerobism treatment unit 1B is: the position that the pipe outlet 65 of connection space (upper reaches portion) R1 and space (liquid circulation path) R2 is provided with, pipe outlet 65 is arranged on the position that ratio wastewater introduction part 5 is more leaned on the top.Except this difference, anaerobism treatment unit 1D has identical formation with anaerobism treatment unit 1B, and identical or equal factor has same-sign.
In the bottom of the space R1 of anaerobism treatment unit 1D, the mud S that is filled is because self gravitation and sedimentation has formed Sludge Bed (anaerobism Sludge Bed) Rs by sedimentary this mud S has formed the few Rt of supernatant portion of solid matter above Sludge Bed Rs.Above aforementioned tube outlet 65 is arranged in the R1 of space and more leans on than this Sludge Bed Rs, be on the position of the Rt of supernatant portion, settled solid matter turns back among the R of space in the Rt of supernatant portion in the R2 of space.Thus, settled solid matter can not be subjected to the resistance of the mud S among the Sludge Bed Rs in the R2 of space, turns back to the Rt of supernatant portion swimmingly, is stuck among the R2 of space thereby can suppress solid matter.And, in the solid matter that turns back to the Rt of supernatant portion, be easy to settled mud S owing to self gravitation descends, turn back on the Sludge Bed Rs.In addition, the solid matter (for example suspended matter) beyond the mud S circulates between space R1 and space R2 owing to rise once more in the upper reaches of the Rt of supernatant portion, finally is discharged to the outside by conveying end 24 simultaneously.For example, when the height that makes anaerobism treatment unit 1D is about 8m, fill mud S apart from the mode of the thickness about the 3~4m of below, pipe outlet 65 is set on the position of about 5m below the distance according to Sludge Bed Rs formation.By this anaerobism treatment unit 1D, also can irrespectively guarantee separation performance with the vertical direction height of the R1 of upper reaches portion, therefore can reduce the height of the vertical direction of the R1 of upper reaches portion, can be with whole device low level.
In addition, though the above-mentioned tubular part 31 of anaerobism treatment unit 1B is exposed to the outside and is provided with, but also can for example in space R1, tubular part be set as upper reaches portion. as this embodiment anaerobism treatment unit 1C. Fig. 6 being arranged is the sectional view of anaerobism treatment unit 1C. and tubular part 51 extends from the lower end of solid-liquid separation portion 23, extends to the bottom of space R1 behind the inside by the space R1 that surrounded by framework 61. and the hollow space of tubular part 51 constitutes a end as R2. space, the space R2 of liquid circulation path and is situated between and by the tube inlet 53 of the lower end that is arranged on solid-liquid separation portion 23 stream R3 is connected with stream R4. and the other end of space R2 is situated between by being connected with the lower end of space R1 with respect to the pipe outlet 55 of space R1 opening. and pipe exports 55 and is arranged on the position that ratio wastewater introduction part 5 is more leaned on the below.
Therefore anaerobism treatment unit 1C surrounds the framework 61 of space R1 and is arranged to expand on the face identical with the outer wall of slot part 15 because tubular part 51 is arranged in the R1 of space.Therefore, among the R1 of space, form upper reaches smoothly in the space under space under solid-liquid separation portion 23 and the slot part 15.Therefore, in anaerobism treatment unit 1C, the bottom 57 of inner side-wall 11 has the lateral shape of the tack quadrangular pyramid of downward expansion, makes that the topmost of sidewall 11 is mobile smoothly at the upper reaches inwardly.Therefore at this moment, the space under space under the solid-liquid separation portion 23 and the slot part 15 becomes dead space, can also be provided for improving the supporting beam 59 of the intensity of treatment trough 3C in this space.As this anaerobism treatment unit 1C,, also can obtain effect and the effect same with anaerobism treatment unit 1B even if in the R1 of upper reaches portion, tubular part is set.
In addition, similarly, in anaerobism treatment unit 1C, can also will manage outlet 55 by shortening tubular part 51 and be arranged on than Sludge Bed more by on the position of top.Like this, can obtain effect and the effect same with anaerobism treatment unit 1D.
In addition, the above each formation is not so long as break away from purport of the present invention, combination mutually.

Claims (10)

1. anaerobism treatment unit, it handles the anaerobism treatment unit of waste water for using anaerobism mud, and it possesses:
Have the sidewall of the space that to take in described anaerobism mud dividing and described waste water is made progress by described anaerobism mud and flow to carry out the upper reaches portion that anaerobism is handled;
Described waste water is directed into the waste water introduction part of described upper reaches portion;
With solid matter from processed in described upper reaches portion and flow through isolating solid-liquid separation portion the treating water of upper end of described upper reaches portion;
With described solid-liquid separation portion be connected with described upper reaches portion, and will isolating described solid matter guides in described solid-liquid separation portion below the liquid circulation path;
The described upper end of described upper reaches portion comprises the upper end of described sidewall,
Described solid-liquid separation portion is arranged on the peripheral part of described upper reaches portion according to the mode of the upper end that surrounds described upper reaches portion; And described solid-liquid separation portion has directing plate, this directing plate according to separate with described upper reaches portion and surround described upper reaches portion the upper end around mode be provided with, and the described solid matter that described directing plate will flow through the upper end of described upper reaches portion is directed in the described liquid circulation path;
Described solid-liquid separation portion is by being formed by the outer side wall double team of the upper end of described sidewall, described directing plate and described anaerobism treatment unit, and wherein said directing plate is clipped between described sidewall and the outer side wall;
Described liquid circulation path comprises clearance portion, this clearance portion be by by the described sidewall of described upper reaches portion and according to surround described sidewall around other sidewall double team of being arranged of mode branch form.
2. the described anaerobism treatment unit of claim 1 is characterized in that, described liquid circulation path more is connected described solid-liquid separation portion with the described waste water introduction part of ratio of described upper reaches portion by the position of below.
3. the described anaerobism treatment unit of claim 1, it is characterized in that the position above described liquid circulation path forms the described anaerobism mud of ratio of described solid-liquid separation portion and described upper reaches portion in the bottom precipitation of described upper reaches portion anaerobism Sludge Bed is more leaned on is connected.
4. each described anaerobism treatment unit of claim 1~3 is characterized in that, the clearance portion of described liquid circulation path is meant the hollow space of inboard of tubular part that extends to the below of described waste water introduction part from described solid-liquid separation portion.
5. each described anaerobism treatment unit of claim 1~3, it is characterized in that, it further has cowling panel, and this cowling panel is arranged on the described waste water introduction part top of described upper reaches portion inside, and being flowing in of described waste water in the portion of described upper reaches carried out rectification on the above-below direction.
6. each described anaerobism treatment unit of claim 1~3 is characterized in that, it further has the taking-up path that settled solid matter in described liquid circulation path is discharged to the outside of described upper reaches portion.
7. utilize the anaerobism treatment process of the described anaerobism treatment unit of claim 1, it handles the anaerobism treatment process of waste water for using anaerobism mud, it is characterized in that, waste water is directed into the bottom of the upper reaches portion of taking in described anaerobism mud from the waste water introduction part, upwards flow in the portion of described upper reaches while the described waste water that makes importing and to carry out the anaerobism processing, in the solid-liquid separation portion on the top that is arranged at described upper reaches portion, treating water to the upper end of flowing through described upper reaches portion after handling through anaerobism separates with the described anaerobism mud of sneaking in this treating water, make the sedimentation in the path that is arranged with described upper reaches part of in described solid-liquid separation portion isolating described anaerobism mud, and turn back in the portion of described upper reaches.
8. the described anaerobism treatment process of claim 7, it is characterized in that, make the sedimentation in the path that is arranged with described upper reaches part of in described solid-liquid separation portion isolating described anaerobism mud, and the described waste water introduction part of ratio that turns back to described upper reaches portion is more by the position of below.
9. the described anaerobism treatment process of claim 7, it is characterized in that, make the sedimentation in the path that is arranged with described upper reaches part of in described solid-liquid separation portion isolating described anaerobism mud, and the position of the anaerobism Sludge Bed that forms in the bottom precipitation of described upper reaches portion of the described anaerobism mud of ratio that turns back to described upper reaches portion above more leaning on.
10. utilize the anaerobism treatment process of the described anaerobism treatment unit of claim 1, it handles the anaerobism treatment process of waste water for using anaerobism mud, it is characterized in that, waste water is directed into the bottom of the upper reaches portion of taking in described anaerobism mud from the waste water introduction part, upwards flow in the portion of described upper reaches while the described waste water that makes importing and to carry out the anaerobism processing, in the solid-liquid separation portion on the top that is arranged on described upper reaches portion, the treating water that flows through described upper reaches portion upper end after handling through anaerobism is separated with the suspended matter of sneaking in this treating water, make the sedimentation in the path that is arranged with described upper reaches part of in described solid-liquid separation portion isolating described suspended matter, and be discharged to the outside of described upper reaches portion.
CN200580046433XA 2004-01-15 2005-07-11 Anaerobic treatment apparatus and method Expired - Fee Related CN101098831B (en)

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JP5209686B2 (en) * 2010-10-08 2013-06-12 水ing株式会社 Organic waste water treatment apparatus and treatment method
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