CN104150593A - Two-phase one-piece sludge concentrating and digesting reactor - Google Patents
Two-phase one-piece sludge concentrating and digesting reactor Download PDFInfo
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- CN104150593A CN104150593A CN201410450979.2A CN201410450979A CN104150593A CN 104150593 A CN104150593 A CN 104150593A CN 201410450979 A CN201410450979 A CN 201410450979A CN 104150593 A CN104150593 A CN 104150593A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses a two-phase one-piece sludge concentrating and digesting reactor. The bottom of an inner barrel is tucked to form a funnel, and a sludge discharging pipe is provided; the bottom end of an outer barrel is tucked towards the center in an inclined way and is connected with the inner barrel in a closed way; a communicating hole for communicating an inner reaction chamber and an outer reaction chamber is formed in the inner barrel; a sludge feeding pipe is arranged in the outer barrel; a supernatant reflowing pipe is arranged at the upper end of the outer reaction chamber; a three-phase separator is arranged inside the outer barrel and at the upper end of the inner barrel; a gas-liquid separator is arranged above the three-phase separator; a cover plate for closing the outer reaction chamber is arranged between the upper end of the outer barrel and the gas-liquid separator; a vent hole for communicating the outer reaction chamber and the gas-liquid separator is formed in the gas-liquid separator; a biogas collecting pipe is arranged at the upper end of the gas-liquid separator; the biogas collecting pipe is connected with a gas storage tank. The two-phase one-piece sludge concentrating and digesting reactor is more simplified and reasonable in structure and quicker in reaction startup, has greater microbial biomass, greatly improves the retention capacity, and is high in treatment efficiency and more stable and energy-saving in operation.
Description
Technical field
The present invention relates to wastewater treatment equipment, specifically refer to a kind of two-phase integrated mud concentrating and digesting reactor, belong to technical field of waste water processing.
Background technology
Anaerobic digestion techniques is the wastewater processing technology of widespread use all over the world, and anaerobic reactor is exactly the special reactor arranging for Anaerobic Methods in Treating.The development experience of anaerobic reactor following several stages.
First-generation reactor: from mid-term in 19 end of the centurys to 20th century, with traditional complete mixture slaking Chi Wei representative, belong to underload system.First-generation reactor successfully basic and key is that the residence time is long, has met the feature of growing anaerobion poor growth, generation time.But, it is exactly hydraulic detention time (HRT) and sludge retention time (SRT) cannot be separated that first-generation reactor also has a common feature, therefore can not provide better growing conditions for the methanobacteria of generation time long (6-8d), cause anaerobic digestion efficiency low, effluent quality is poor, can not process economically trade effluent.
S-generation reactor is high efficiency anaerobic reactor, has not only realized separating of SRT and HRT, is preventing also having done a large amount of characteristic research aspect sludge loss, as anaerobic biofilter (AF) by microorganic adhesion the surface at carrier, avoided loss; In up-flow anaerobic sludge blanket (UASB) reactor, form granule sludge, improved the settling property of mud, thereby effectively reduced the content of microorganism in water outlet or solids, also avoided microorganism to run off in a large number.But s-generation anaerobic reactor also has deficiency.Taking UASB as example, in the time that water inlet cannot adopt high hydraulic load and organic loading, will cause into the stirring action of water and aerogenesis and reduce, the mixture strength in Sludge Bed reduces, and occurs short stream effect, and the application of reactor is restricted.
Third generation reactor is improved on the basis of s-generation reactor, around uniformity of water distribution, avoid the phenomenons such as short stream and dead angle to carry out meticulous research and design, main by increasing the aspect ratio of reactor, reactor is carried out segmentation and increases the improvement means such as triphase separator at inside reactor, make into remaining contact well between water and mud, utilize tower reactor structure and effluent recycling to improve water inlet flow velocity and obtained good stirring intensity.From textural, third generation inside reactor structure is more complicated, and design and construction require high; Reactor aspect ratio is large, has increased the power consumption of intake pump, has improved working cost.The third generation reactor waterpower residence time is relatively short, and hydrolysis rate is slower, can cause reaction not thorough, increases the weight of the burden of subsequent disposal.And it is still immature under third generation reactor waterpower condition, to cultivate at present granule sludge technology active and that settling property is good, need further study.
Summary of the invention
For prior art above shortcomings, the object of this invention is to provide a kind of structure and more simplify rationally, reaction starts faster, and microbial biomass is larger, interception capacity strengthens greatly, and processing efficiency is high and move the more two-phase integrated mud concentrating and digesting reactor of stabilizing energy-saving.
Technical scheme of the present invention is achieved in that
Two-phase integrated mud concentrating and digesting reactor, comprises concentric inner core and urceolus, and inner core bottom is drawn in and formed funnel-form, is provided with shore pipe at funnel bottommost; Oblique center, urceolus bottom is drawn in and is connected with inner tank theca sealing; The outer reaction chamber of region formation between inner core and urceolus, reaction chamber in inner core interior region forms is provided with some by the communicating aperture of outer reaction chamber and the connection of interior reaction chamber on inner core near outer reaction chamber bottom; Be provided with supernatant liquor relief outlet in urceolus upper end; On urceolus, be provided with into mud pipe near lower position, enter mud pipe higher than communicating aperture height, outer reaction chamber upper end is provided with supernatant liquor return line, supernatant liquor return line with enter mud pipe and be connected to realize supernatant liquor and enter mixing of mud; In urceolus, be positioned at inner core upper end and be provided with triphase separator, triphase separator is both ends open and uncovered downward horn cover structure, and horn cover lower end extends in outer reaction chamber; On triphase separator, be provided with the gas-liquid separator of tubular and upper end closed, gas-liquid separator lower end forms closes up and closes up and dock with triphase separator upper end, between urceolus upper end and gas-liquid separator, be provided with the cover plate of outer reaction chamber sealing, gas-liquid separator is provided with ventilating pit so that outer reaction chamber and gas-liquid separator are communicated with; Be provided with collecting methane pipe in gas-liquid separator upper end, collecting methane pipe is connected with gas tank.
In interior reaction chamber, be provided with the inner circulating tube concentric with inner core, inner circulating tube bottom is hydraucone, and inner circulating tube middle part is provided with some by the inner inner circulating tube water hole being communicated with interior reaction chamber; Described gas tank connects biogas return line by air pump, and the biogas return line the other end enters inner circulating tube lower end also straight up.
On outer tube inner wall, be provided with a circle floor, floor is positioned under triphase separator horn cover lower end, makes outer reaction chamber between floor and horn cover lower end, form one and is folded to flow channels to stop mud to pass through.
On triphase separator horn cover, be provided with the vapor pipe that two upper ends flush, wherein a vapor pipe lower end communicates with outer reaction chamber, and another vapor pipe lower end communicates with interior reaction chamber.
Compared to existing technology, the present invention has following beneficial effect:
1, this reactor adopts two reaction chambers, and the concentrated mud of outer reaction chamber enters interior reaction chamber, can ensure that interior reaction chamber has accumulated enough a large amount of microorganisms, thereby has realized separating of sludge retention time and hydraulic detention time; And for reinforcing mass transfer effect, introduce circulation tube at interior reaction chamber, the circulation of reaction chamber in realizing under backflow biogas drives, ensures the abundant contact between waste water and anaerobic sludge.
2, the circular body of this reactor and conical lower portion design can solve the phenomenons such as dead angle, channel, short stream preferably, improve reactor waterpower condition, and are beneficial to deposition and the discharge of mud.
3, the present invention adopts a kind of design of special inner circulating tube, middle reserved water hole, and in realizing, the upper and lower two portions of reactor circulate respectively, make reaction chamber anaerobic sludge in " fluidized state ", have improved processing rate.
4, the present invention adopts biogas recirculation to substitute mechanical cycles, the more convenient stirring effect improving in reactor energy-conservationly.Test-results shows, reactor fluidised form is between complete mixing flow and pulling flow type, and along with the increasing of reflux gas amount, the degree of complete mixing flow of leveling off to is just larger.Complete mixing flow is conducive to contacting of anaerobic bacteria flora and excess sludge matrix, has strengthened mass transfer process, can improve the treatment efficiency of reactor.
5, the present invention adopts a kind of independent triphase separator design, can ensure that mud, water, biogas separate, and are realized and being separated by the difference of control hydraulic detention time, the metabolic capacity of performance acid-producing bacteria and methanogen floras.
Brief description of the drawings
Fig. 1-structural representation of the present invention.
Fig. 2-thief hatch distribution schematic diagram of the present invention.
Wherein, 1-gas tank; 2-air pump; 3-ventilating pit; 4-supernatant liquor relief outlet; 5-gas-liquid separator; 6-triphase separator; 7-biogas return line; 8-inner circulating tube; The outer reaction chamber of 9-; Reaction chamber in 10-; 11-collecting methane pipe; 12-settling region; 13-supernatant liquor return line; 14-enters mud pipe; 15-mud compression zone; 16-shore pipe.
Embodiment
For the weak point of existing anaerobic sludge digestion reactor, the present invention has carried out following improvement: the form that adopts inside and outside two reactor combinations in 1 structure, realize separating of sludge retention time and hydraulic detention time, improve microbe population in anaerobic reactor.The circulation system design of 2 uniquenesses, can make to contact with anaerobion into mud better, improves processing efficiency.3 further purify water outlet by triphase separator.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Referring to Fig. 1 and Fig. 2, from scheming, can find out, the two-phase integrated mud concentrating and digesting reactor of the present invention, comprises concentric circular inner tube 17 and urceolus 18, the lower end of urceolus and upper end are higher than the lower end of inner core and upper end respectively.Inner core 17 bottoms are drawn in and are formed funnel-form, and inner core bottom and funnel area form mud compression zone 15, are provided with shore pipe 16 at funnel bottommost.Oblique center, urceolus bottom is drawn in and is connected with inner tank theca sealing, is beneficial to sludgd deposition.Region between inner core and urceolus forms outer reaction chamber 9, and reaction chamber 10 in inner core interior region forms is provided with some by the communicating aperture 19 of outer reaction chamber and the connection of interior reaction chamber on inner core 17 near outer reaction chamber 9 bottoms.On urceolus 18, be provided with into mud pipe 14 near lower position, this enters mud pipe and is the general import of this reactor, enter mud pipe 14 higher than communicating aperture 19 height, outer reaction chamber 9 upper ends are provided with supernatant liquor return line 13 simultaneously, supernatant liquor return line 13 with enter mud pipe 14 and be connected to realize supernatant liquor and enter mixing of mud.When actually operating, outer reaction chamber supernatant liquor quantity of reflux is 1:4 with the ratio control of entering mud amount.Be provided with supernatant liquor relief outlet 4 in urceolus 18 upper ends, supernatant liquor relief outlet 4 positions are a little more than supernatant liquor return line 13 height, and treated water up to standard can discharge by this outlet.
In urceolus 18, be positioned at inner core upper end and be provided with triphase separator 6, triphase separator 6 is both ends open and uncovered downward horn cover structure, and horn cover lower end extends in outer reaction chamber.On triphase separator 6, be provided with the gas-liquid separator 5 of tubular and upper end closed, gas-liquid separator 5 lower ends form to close up and close up to dock with triphase separator 6 upper ends and communicate.Between urceolus 18 upper ends and gas-liquid separator 5, be provided with the cover plate 20 of outer reaction chamber sealing, gas-liquid separator 5 is provided with ventilating pit 3 so that outer reaction chamber 9 and gas-liquid separator 5 are communicated with.Be provided with collecting methane pipe 11 in gas-liquid separator 5 upper ends, collecting methane pipe 11 is connected with gas tank 1.The biogas that outer like this reaction chamber 9 produces just can enter in gas-liquid separator 5 by ventilating pit 3, and then enters gas tank 1 by collecting methane pipe 11 and store.Formation settling region, region 12 between urceolus 18 upper ends and triphase separator 6, gas-liquid separator 5, because mud can precipitate in this region and deposit downwards by the horn cover of triphase separator.
The present invention is provided with the inner circulating tube concentric with inner core 8 in interior reaction chamber 10, and inner circulating tube 8 bottoms are hydraucone, and inner circulating tube 8 middle parts are provided with some by the inner inner circulating tube water hole 21 being communicated with interior reaction chamber.Described gas tank 1 connects biogas return line 7 by air pump 2, and biogas return line 7 the other ends enter inner circulating tube 8 lower ends also straight up.The present invention establishes sludge gas collecting device, so just a part of biogas can be passed into inner circulating tube, utilizes biogas backflow inner circulating tube to replace traditional mechanical agitation, and realizes upper and lower segmentation circulation.
In order to be more conducive to the deposition of mud, the present invention is provided with a circle floor 22 on urceolus 18 inwalls, between floor and inner core, there is passage, floor 22 is positioned under triphase separator 6 horn cover lower ends and partially overlaps in horizontal projection, make outer reaction chamber between floor and horn cover lower end, form one and be folded to flow channels to stop mud to pass through, can turn back downwards because encounter floor and horn cover in mud uphill process, therefore floor and horn cover have the effect that stops mud.
In order to be more conducive to overflowing of biogas, the present invention is provided with the vapor pipe 23 that two upper ends flush on triphase separator 6 horn covers, wherein a vapor pipe lower end communicates with outer reaction chamber, another vapor pipe lower end communicates with interior reaction chamber, is respectively used to the firedamp drainage of generation to enter in gas-liquid separator to supernatant liquor upper end.In order to facilitate the supporting and location of inner circulating tube, between inner circulating tube upper end and the closing in of triphase separator upper end, be provided with a plate, be that inner circulating tube is arranged on triphase separator by web plate, inner circulating tube lower end is unsettled, and the vapor pipe now communicating with interior reaction chamber is just arranged on web plate.
Referring to Fig. 2, on inside and outside reaction chamber, establish thief hatch, wherein thief hatch A, B, C, D, E lay respectively at top, middle and upper part, middle part, middle and lower part, the bottom of outer reaction chamber, thief hatch F, G, H, I, J lay respectively at top, middle and upper part, middle part, middle and lower part, the bottom of interior reaction chamber, and at the mud discharging mouth of reactor bottom, a thief hole are set equally.Thief hatch samples use during as scientific research and testing, according to every mud index such as fluid characteristics parameter, microbe species quantity and BOD, COD, VSS in the each region of data analysis inside reactor of sample acquisitions.
As a specific embodiment, outer reaction chamber useful volume 56L, flow area 0.07 ㎡; Interior reaction chamber useful volume 25L, flow area 0.03 ㎡; Mud compression zone 6L, flow area 0.03 ㎡; Settling region 20L, flow area 0.09 ㎡; Gas-liquid separator useful volume 3L.Overall useful volume 110L.
Principle of work of the present invention: the excess sludge from second pond bottom enters via the bottom of outer reaction chamber, reaction chamber completes preliminary concentrated and acidication reaction outside, supernatant liquor is discharged reactor, and a small amount of gas that outer reaction chamber produces enters gas-liquid separator (being equivalent to gas collection chamber) and discharges.The liquid on outer reaction chamber top discharges by 20% quantity of reflux, enters reactor together with fresh active sludge.Concentration higher mud in outer reaction chamber bottom is because gravity settling and liquid level differential pressure action enter interior reaction chamber, enter the Sludge Bed forming due to internal recycle at interior reaction chamber, with wherein a large amount of abundant contact reactss of anaerobion, degradable organism major part is converted into biogas.Inner circulating tube is divided into upper and lower two portions by middle part water hole, and under the drive of backflow biogas, circulation has been realized in inner circulating tube bottom first; Then together with the biogas that the biogas refluxing produces with interior reaction chamber, rise, the mixed solution of interior reaction chamber middle and upper part is promoted to gas-liquid separator through inner circulating tube simultaneously, separated biogas enters gas-liquid separator and drains, the muddy water mixed solution of separating will be got back to interior reaction chamber middle part along downtake (inner circulating tube), thereby realize again a circulation in interior reaction chamber middle and upper part.Under the effect of these two circulations, make interior reaction chamber anaerobic sludge in " fluidized state ", thereby ensured fully contacting between matrix and microorganism.The mud that settling property is good is eliminated and is entered mud compression zone by internal recycle, and the poor mud of settling property continues to enter internal recycle.The sludge settling property that inorganic content is high is in general better than the mud that inorganic content is low, and the mud that digestible degree is higher enters mud compression zone, and the lower mud of digestible degree is stayed continuation digestion degraded in the second reaction chamber.Therefore the mud that enters mud compression zone can ensure to have good settling property and higher digestible degree.
Reactor of the present invention is made up of interior reactor two portions of the outer reactor of cylinder type and right cylinder+conical lower portion, its China and foreign countries' reactor is mainly hydrolysis phase, interior reactor is mainly digestion phase, interior reactor is connected with cone barrel gas-liquid separator, triphase separator, column inner circulating tube from top to bottom in turn, and shore pipe is established in bottom.Adopt biogas recirculation system to play stirring action to inside reactor, make to react mud and be fluidized state, ensured biomass and biological effect in reactor.This structure of reactor advantages of simple, has good ydrodynamics characteristic, and unique triphase separator design has ensured mud, water, biogas three phase separation effect, and processing efficiency is high, processes load range large, energy-saving safe, and effluent characteristics is good.The invention solves in anaerobic reactor due to acidication bacterium and the required condition of methanogen inconsistent, both not high situations of anaerobic digestion efficiency that cause that coexist in same reactor, in reaction chamber, accumulate outside acidication bacterium, in interior reaction chamber, accumulate methanogen, the reactor design of its two-phase type can ensure that different anaerobe floras is all in best living environment, be conducive to the accumulation of biomass in reactor, improve anaerobic sludge digestion efficiency.
Finally it should be noted that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although applicant has been described in detail the present invention with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is modified or is equal to replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of claim scope of the present invention.
Claims (4)
1. two-phase integrated mud concentrating and digesting reactor, is characterized in that: comprise concentric inner core and urceolus, inner core bottom is drawn in and formed funnel-form, is provided with shore pipe at funnel bottommost; Oblique center, urceolus bottom is drawn in and is connected with inner tank theca sealing; The outer reaction chamber of region formation between inner core and urceolus, reaction chamber in inner core interior region forms is provided with some by the communicating aperture of outer reaction chamber and the connection of interior reaction chamber on inner core near outer reaction chamber bottom; Be provided with supernatant liquor relief outlet in urceolus upper end; On urceolus, be provided with into mud pipe near lower position, enter mud pipe higher than communicating aperture height, outer reaction chamber upper end is provided with supernatant liquor return line, supernatant liquor return line with enter mud pipe and be connected to realize supernatant liquor and enter mixing of mud; In urceolus, be positioned at inner core upper end and be provided with triphase separator, triphase separator is both ends open and uncovered downward horn cover structure, and horn cover lower end extends in outer reaction chamber; On triphase separator, be provided with the gas-liquid separator of tubular and upper end closed, gas-liquid separator lower end forms closes up and closes up and dock with triphase separator upper end, between urceolus upper end and gas-liquid separator, be provided with the cover plate of outer reaction chamber sealing, gas-liquid separator is provided with ventilating pit so that outer reaction chamber and gas-liquid separator are communicated with; Be provided with collecting methane pipe in gas-liquid separator upper end, collecting methane pipe is connected with gas tank.
2. two-phase integrated mud concentrating and digesting reactor according to claim 1, it is characterized in that: in interior reaction chamber, be provided with the inner circulating tube concentric with inner core, inner circulating tube bottom is hydraucone, and inner circulating tube middle part is provided with some by the inner inner circulating tube water hole being communicated with interior reaction chamber; Described gas tank connects biogas return line by air pump, and the biogas return line the other end enters inner circulating tube lower end also straight up.
3. two-phase integrated mud concentrating and digesting reactor according to claim 1, it is characterized in that: on outer tube inner wall, be provided with a circle floor, floor is positioned under triphase separator horn cover lower end, makes outer reaction chamber between floor and horn cover lower end, form one and is folded to flow channels to stop mud to pass through.
4. two-phase integrated mud concentrating and digesting reactor according to claim 1, it is characterized in that: on triphase separator horn cover, be provided with the vapor pipe that two upper ends flush, wherein a vapor pipe lower end communicates with outer reaction chamber, and another vapor pipe lower end communicates with interior reaction chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410450979.2A CN104150593B (en) | 2014-09-05 | 2014-09-05 | Two-phase integrated mud concentrating and digesting reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410450979.2A CN104150593B (en) | 2014-09-05 | 2014-09-05 | Two-phase integrated mud concentrating and digesting reactor |
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| CN104150593A true CN104150593A (en) | 2014-11-19 |
| CN104150593B CN104150593B (en) | 2016-01-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830597A (en) * | 2017-03-06 | 2017-06-13 | 浙江省柯桥中学 | A kind of printing and dyeing sludge separator |
| CN113620420A (en) * | 2020-05-06 | 2021-11-09 | 于清 | Pulse type fluidized bed excess sludge anaerobic digestion reactor and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2763265Y (en) * | 2005-01-28 | 2006-03-08 | 重庆大学 | Integrated reactor for intenral circulation and concentration digestion of mud in wastewater |
| US20080277328A1 (en) * | 2007-05-07 | 2008-11-13 | Zhao Joe R H | Up-flow Multi-stage Anaerobic Reactor (UMAR) |
| CN201424414Y (en) * | 2009-04-02 | 2010-03-17 | 中山大学 | Self-circulation anaerobic reactor and sewage disposal device employing same |
| CN101875528A (en) * | 2010-05-17 | 2010-11-03 | 重庆大学 | Equipment and method for integrally treating sludge and household garbage in town sewage treatment plant |
-
2014
- 2014-09-05 CN CN201410450979.2A patent/CN104150593B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2763265Y (en) * | 2005-01-28 | 2006-03-08 | 重庆大学 | Integrated reactor for intenral circulation and concentration digestion of mud in wastewater |
| US20080277328A1 (en) * | 2007-05-07 | 2008-11-13 | Zhao Joe R H | Up-flow Multi-stage Anaerobic Reactor (UMAR) |
| CN201424414Y (en) * | 2009-04-02 | 2010-03-17 | 中山大学 | Self-circulation anaerobic reactor and sewage disposal device employing same |
| CN101875528A (en) * | 2010-05-17 | 2010-11-03 | 重庆大学 | Equipment and method for integrally treating sludge and household garbage in town sewage treatment plant |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830597A (en) * | 2017-03-06 | 2017-06-13 | 浙江省柯桥中学 | A kind of printing and dyeing sludge separator |
| CN113620420A (en) * | 2020-05-06 | 2021-11-09 | 于清 | Pulse type fluidized bed excess sludge anaerobic digestion reactor and method thereof |
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| CN104150593B (en) | 2016-01-27 |
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