CN102153197A - Internal circulation anaerobic reactor - Google Patents
Internal circulation anaerobic reactor Download PDFInfo
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- CN102153197A CN102153197A CN2011100926694A CN201110092669A CN102153197A CN 102153197 A CN102153197 A CN 102153197A CN 2011100926694 A CN2011100926694 A CN 2011100926694A CN 201110092669 A CN201110092669 A CN 201110092669A CN 102153197 A CN102153197 A CN 102153197A
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- C12M—APPARATUS 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
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
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Abstract
The invention discloses an internal circulation anaerobic reactor. The anaerobic reactor comprises a tank body, a biogas collection pipe internally communicated with the tank body and a water-sealed tank and also comprises a water inlet pipe and an inclined plate setting tank, wherein the middle of the tank body is provided with an isolation wall; two inner opposite corners of the tank body are separately provided with submerged propellers which are used to push the mixed water body in the tank to flow along the isolation wall; the inclined plate setting tank is arranged on one side of the inside of the tank; and the lower end of the inclined plate setting tank is provided with an opening communicated with the inclined plate setting tank and the tank body. By adopting the structure, the internal circulation anaerobic reactor has the following advantages: 1) water circulation can be realized in the tank body, the flow rate is stable on each section which is perpendicular to the flowing direction in a steady state; 2) on each section of the reactor, the concentration of material can not change with time, the loss of sludge can be reduced; 3) fluid particles can not be mixed in the flowing direction of fluid, the backmixing phenomenon does not exist, all the fluid particles have the same residence time; 4) mud and water can be fully mixed; and 5) the impact resistance can be increased.
Description
Technical field
The present invention relates to water-treatment technology field, particularly a kind of internal-circulation anaerobic reactor.
Background technology
The assisted anaerobic reactor is mainly used in sewage disposal, is a kind of of anaerobic reactor.Respond district, gas-liquid-solid three-phase separator (comprising the settling region) and air chamber three parts of traditional rising flow anaerobic sludge bed (UASB) are formed.Retain a large amount of anaerobic sludges in the reaction zone of bottom, the mud with good sedimentation function and cohesion performance forms sludge blanket in the bottom.Sewage to be processed from anaerobic mud bed bottom flow into sludge blanket mud mix and contact, the organism in the microbiological degradation sewage in the mud is converted into biogas to it.Biogas is constantly emitted with the micro-bubble form, micro-bubble is in uphill process, constantly merge, form bigger bubble gradually, on Sludge Bed top because the stirring of biogas forms the thinner mud of sludge concentration and water rises together and enter triphase separator, when biogas is run into the reflector of separator bottom, be folded to reflector around, pass water layer then and enter air chamber, concentrate on air chamber biogas, derive with conduit, the solid-liquid mixed solution enters the settling region of triphase separator through reflection, mud in the sewage flocculates, and particle increases gradually, and sedimentation under action of gravity.Be precipitated to mud natural pond on the skew wall and skew wall and slide back in the anaerobic reaction district, make a large amount of mud of accumulation in the reaction zone, overflow from overflow weir top, settling region, discharge Sludge Bed then with the treat effluent after mud separates.
The basic point of departure of this technology is: 1, for the mud flocculation provides favourable physics---electrochemical conditions, make the anaerobic sludge acquisition and keep good sedimentation function; 2, good Sludge Bed often can form a kind of biophase of quite stable, can resist stronger disturbing force.Bigger flco has good sedimentation function, thus the sludge concentration in the raising equipment.
Fluidised form in traditional upflow anaerobic sludge blanket process is quite complicated, fluidised form and gas production rate and reaction zone height correlation in the reaction zone, in general, in the sludge blanket of reaction zone bottom, because the result of aerogenesis, the tolerance that the part section passes through is more, forms the air-flow of one rising, drives partially mixed liquid (referring to mud and water) and moves upward.Meanwhile, the medium around this strand gas, the current then moves downward, and causes backmixing, and this fluidised form causes the short stream of water.At the local dead angle that forms easily away from this burst rising gas, current.Also have certain gas production rate at these places, dead angle, form the slow and faint mixing of mud and water, form mixing zone in various degree thus in sludge blanket, the size of these mixing zones is relevant with short flow process degree.Mixed solution in the suspended layer rises at a relatively high speed and descends because the motion of gas drives liquid, forms stronger mixing.Under the less situation of gas production rate, sludge blanket and suspended layer have tangible boundary line sometimes, and under the more situation of gas production rate, this interface is not obvious.Relevant test shows that current are pulling flow type in the settling region, but the settling region still also has dead band and mixing zone.Therefore, there is following shortcoming in traditional anaerobic reactor:
Though 1, in traditional flow lifting type anaerobism mud bed gas-liquid-solid three-phase separator is arranged, mixed solution enters before the settling region gas delivery, because the mud in the settling region still has higher methanogenesis activity, and continuation aerogenesis in the settling region; Perhaps because impact load and water quality change suddenly, may make sludge bulking in the reaction zone, the settling region solid-liquid separation is not good as a result, sludge loss takes place and has influenced sludge concentration in water quality and the Sludge Bed.
2, traditional upflow anaerobic sludge blanket process is not owing to there is the settling region, and be subjected to the restriction of triphase separator that the suspended substance in the water is had strict requirement, if the water inlet pre-treatment is improper, thereby too high suspended substance can make a large amount of suspended substances pile up in reactor influences water outlet, give vent to anger, and further can make the total system paralysis.Therefore, traditional up flow anaerobic sludge blanket reactor requires only to use coarse rack not enough than higher to the water inlet pre-treatment, and fine fack or preliminary sedimentation tank less than 1mm also should be arranged.
3, the fluidised form in the traditional up flow anaerobic sludge blanket reactor is quite complicated, is easy to occur short flow phenomenon in the Sludge Bed, and the direct result that this phenomenon is brought is exactly the decline of processing power.Will influence aerogenesis if can not in time handle, cause systemic breakdown really at last.
4, traditional up flow anaerobic sludge blanket reactor changes relatively sensitivity suddenly to water quality and load, and impact resistance is poor slightly.
Summary of the invention
Technical problem to be solved by this invention is, at the deficiencies in the prior art, provides a kind of and reduces sludge loss, makes the well-mixed internal-circulation anaerobic reactor of muddy water of participating in reaction simultaneously.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of internal-circulation anaerobic reactor, comprise the pond body, with the pond body in the collecting methane pipeline, the water-sealed tank that are connected, described internal-circulation anaerobic reactor also comprises water inlet pipe, inclined-plate clarifying basin, the middle part of described pond body is provided with divider wall, intravital two diagonal angles, described pond are respectively equipped with and promote in the pond mixed water body around divider wall mobile underwater scooter, described inclined-plate clarifying basin is arranged on the intravital side in pond, and the lower end of described inclined-plate clarifying basin is provided with the opening that is communicated with inclined-plate clarifying basin and pond body.
Described water inlet pipe is arranged on the pool wall of pond body, and described water inlet pipe is arranged on the opposition side of inclined-plate clarifying basin open side.
Described collecting methane pipe connection is in the upper end of pond body and be communicated with in the body of pond, and the external water-sealed tank in described collecting methane pipeline and pond is connected.
The lower end of described inclined-plate clarifying basin is provided with the spoil disposal pipeline, and one jiao of described pond body is provided with another spoil disposal pipeline, and described spoil disposal pipeline is connected with the anaerobic sludge pump respectively.
Described inclined-plate clarifying basin upper end is provided with overflow weir and water outlet.
Described two underwater scooters are symmetrical arranged with respect to divider wall, described divider wall towards direction parallel with the direction of propulsion of underwater scooter.
Described pond body is provided with manhole, and described manhole and inclined-plate clarifying basin are oppositely arranged.
Described underwater scooter adopts anchor to be fixed on body bottom, pond.
Be provided with swash plate in the described inclined-plate clarifying basin, swash plate adopts glass reinforced plastic to make, and described overflow weir adopts the PVC plate to make or carbon steel is made, and scribbles antifouling paste on the interior pool wall of described inclined-plate clarifying basin.
Body top, described pond is provided with inspection window.
The present invention adopts said structure, has the following advantages: 1, realized the intravital water cycle in pond, under the steady state, with the vertical cross section of flow direction on flow speed stability; 2, on each cross section of reactor, the concentration of material does not change in time, has reduced sludge loss; 3, there is not the mixing of fluid particle on the fluid flow direction, no air-teturning mixed phenomenon.All fluid particles have the identical residence time; 4, make the muddy water thorough mixing; 5, improve impact resistance.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments;
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an A-A sectional structure chart of the present invention;
Fig. 3 is a B-B sectional structure chart of the present invention;
In Fig. 1～Fig. 3,1, water inlet pipe; 2, underwater scooter; 3, divider wall; 4, inclined-plate clarifying basin; 5, collecting methane pipeline; 6, water-sealed tank; 7, spoil disposal pipeline; 8, overflow weir; 9, pond body; 10, manhole; 11, opening; 12, water outlet; 13, inspection window.
Embodiment
As Fig. 1～a kind of internal-circulation anaerobic reactor shown in Figure 3, comprise pond body 9, with pond body 9 in the collecting methane pipeline 5, the water-sealed tank 6 that are connected, internal-circulation anaerobic reactor also comprises water inlet pipe 1, inclined-plate clarifying basin 4, the middle part of pond body 9 is provided with divider wall 3, two diagonal angles in the pond body 9 are respectively equipped with and promote in the pond mixed water body around divider wall 3 mobile underwater scooters 2, inclined-plate clarifying basin 4 is arranged on the side in the pond body 9, and the lower end of inclined-plate clarifying basin 4 is provided with the opening 11 that is communicated with inclined-plate clarifying basin 4 and pond body 9.Inclined-plate clarifying basin 4 is a closed, only leaves opening 11.Underwater scooter 2 pushes opening 11 with muddy water blended mixed water body, makes it enter inclined-plate clarifying basin 4.Water inlet pipe 1 is arranged on the pool wall of pond body 9, and water inlet pipe 1 is arranged on the opposition side of inclined-plate clarifying basin 4 open side.Collecting methane pipeline 5 is connected the upper end of pond body 9 and is communicated with in the pond body 9, and collecting methane pipeline 5 is connected with pond body 9 water-sealed tank 6 outward.Sewage and mud form mixed water body, mix in pond body 9 and reaction, produce biogas, and collecting methane pipeline 5 is sent to water-sealed tank 6 with biogas.The outlet of water-sealed tank 6 is connected to the biogas utilization place, maybe the biogas torch burning of discharging is fallen.Inclined-plate clarifying basin 4 bottoms are provided with the inclination angle, the lower end of inclined-plate clarifying basin 4 is provided with spoil disposal pipeline 7 simultaneously, and one jiao of pond body 9 is provided with another spoil disposal pipeline 7, and spoil disposal pipeline 7 is connected with the anaerobic sludge pump respectively, the anaerobic sludge pump makes mud be back in the Sludge Bed, reduces sludge loss.Inclined-plate clarifying basin 4 upper ends are provided with overflow weir 8 and water outlet 12, discharge from overflow weir 8 and water outlet 12 with the water after the processing after mud separates.
Two underwater scooters 2 are symmetrical arranged with respect to divider wall 3, divider wall 3 towards direction parallel with the direction of propulsion of underwater scooter 2.Pond body 9 is provided with manhole 10, and manhole 10 is oppositely arranged with inclined-plate clarifying basin 4.Underwater scooter 2 adopts anchor to be fixed on pond body 9 bottoms.Be provided with swash plate in the inclined-plate clarifying basin 4, swash plate adopts glass reinforced plastic to make, and overflow weir 8 adopts the PVC plate to make or carbon steel is made, and scribbles antifouling paste on the interior pool wall of described inclined-plate clarifying basin.Body 9 tops in pond are provided with inspection window 13.
The pond body 9 of reactor should adopt Steel Concrete to build, and the inboard should be coated with antifouling paste, and divider wall 3 can adopt discipline concrete placement, and its integral body also will be coated with antifouling paste.
The present invention for reduce water outlet with suspended substance enter mixed water body, can make the mud that precipitates in the pond be back in the Sludge Bed by inclined-plate clarifying basin 4.The benefit of inclined-plate clarifying basin 4 is: the accumulation of accelerate sludge but mud refluxes, shorten start-up period; Remove suspended substance, improve effluent quality; When taking place to float mud in a large number once in a while, improved visibility, can in time reclaim the stability that mud keeps technology; Returned sluge can be done further decomposition, can reduce surplus sludge volume.
The muddy water mixing of tradition anaerobic reactor utilizes the methane aeration to realize that its plant factor is low, power consumption is big; Also there is the problem of micro-pore aeration maintenance of equipment in it simultaneously.The present invention has then adopted the mode of plug-flow under water, underwater scooter 2 is installed, promptly the impellent that underwater scooter 2 impellers are produced directly acts on mixed water body, makes mixed water body circulate around divider wall 3, can effectively prevent the settled effect of mud when playing the plug-flow effect again.Thereby, adopt underwater scooter 2 both to reduce power consumption, make muddy water obtain mixing fully again.Pusher also can circulate the effect of actively promoting of playing to the mixed solution of pond body bottom low regime by being provided with under water in the body of pond, and the anaerobic reactor bottom velocity is low, the problem of sludgd deposition thereby solve.Pusher is set under water is specifically designed to and promotes mixed solution and can make the operation scheme of reactor more flexible, this for save energy, raise the efficiency and have crucial meaning.The shell that the present invention will open wide relatively makes into fully sealed, has stopped the water in the anaerobic pond and has contacted with the direct of air, increases thruster, makes mud and water thorough mixing, increases contact area.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted technical scheme of the present invention to carry out, or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (10)
1. internal-circulation anaerobic reactor, comprise pond body (9), with the collecting methane pipeline (5) that is connected in the pond body (9), water-sealed tank (6), it is characterized in that: described internal-circulation anaerobic reactor also comprises water inlet pipe (1), inclined-plate clarifying basin (4), the middle part of described pond body (9) is provided with divider wall (3), two diagonal angles in the described pond body (9) are respectively equipped with and promote in the pond mixed water body around divider wall (3) mobile underwater scooter (2), described inclined-plate clarifying basin (4) is arranged on the side in the pond body (9), and the lower end of described inclined-plate clarifying basin (4) is provided with the opening (11) that is communicated with inclined-plate clarifying basin (4) and pond body (9).
2. a kind of internal-circulation anaerobic reactor according to claim 1 is characterized in that: described water inlet pipe (1) is arranged on the pool wall of pond body (9), and described water inlet pipe (1) is arranged on the opposition side of inclined-plate clarifying basin (4) open side.
3. a kind of internal-circulation anaerobic reactor according to claim 1, it is characterized in that: described collecting methane pipeline (5) is connected the upper end of pond body (9) and is communicated with in the pond body (9), and described collecting methane pipeline (5) is connected with pond body (9) water-sealed tank (6) outward.
4. a kind of internal-circulation anaerobic reactor according to claim 1, it is characterized in that: the lower end of described inclined-plate clarifying basin (4) is provided with spoil disposal pipeline (7), one jiao of described pond body (9) is provided with another spoil disposal pipeline (7), and described spoil disposal pipeline (7) is connected with the anaerobic sludge pump respectively.
5. according to claim 1 or 4 described a kind of internal-circulation anaerobic reactors, it is characterized in that: described inclined-plate clarifying basin (4) upper end is provided with overflow weir (8) and water outlet (12).
6. a kind of internal-circulation anaerobic reactor according to claim 1, it is characterized in that: described two underwater scooters (2) are symmetrical arranged with respect to divider wall (3), described divider wall (3) towards direction parallel with the direction of propulsion of underwater scooter (2).
7. according to claim 1 or 2 or 3 described a kind of internal-circulation anaerobic reactors, it is characterized in that: described pond body (9) is provided with manhole (10), and described manhole (10) is oppositely arranged with inclined-plate clarifying basin (4).
8. according to claim 1 or 6 described a kind of internal-circulation anaerobic reactors, it is characterized in that: described underwater scooter (2) adopts anchor to be fixed on pond body (9) bottom.
9. according to claim 1 or 4 described a kind of internal-circulation anaerobic reactors, it is characterized in that: described inclined-plate clarifying basin is provided with swash plate in (4), swash plate adopts glass reinforced plastic to make, described overflow weir (8) adopts the PVC plate to make or carbon steel is made, and scribbles antifouling paste on the interior pool wall of described inclined-plate clarifying basin.
10. a kind of internal-circulation anaerobic reactor according to claim 1 is characterized in that: described pond body (9) top is provided with inspection window (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100926694A CN102153197B (en) | 2011-04-13 | 2011-04-13 | Internal circulation anaerobic reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100926694A CN102153197B (en) | 2011-04-13 | 2011-04-13 | Internal circulation anaerobic reactor |
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| CN102153197A true CN102153197A (en) | 2011-08-17 |
| CN102153197B CN102153197B (en) | 2012-08-22 |
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| CN2011100926694A Expired - Fee Related CN102153197B (en) | 2011-04-13 | 2011-04-13 | Internal circulation anaerobic reactor |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09220591A (en) * | 1996-02-16 | 1997-08-26 | Toshiba Corp | Waste water treatment apparatus |
| US20080277328A1 (en) * | 2007-05-07 | 2008-11-13 | Zhao Joe R H | Up-flow Multi-stage Anaerobic Reactor (UMAR) |
| CN101372659A (en) * | 2008-10-23 | 2009-02-25 | 南京工业大学 | Horizontal type anaerobic reactor |
-
2011
- 2011-04-13 CN CN2011100926694A patent/CN102153197B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09220591A (en) * | 1996-02-16 | 1997-08-26 | Toshiba Corp | Waste water treatment apparatus |
| US20080277328A1 (en) * | 2007-05-07 | 2008-11-13 | Zhao Joe R H | Up-flow Multi-stage Anaerobic Reactor (UMAR) |
| CN101372659A (en) * | 2008-10-23 | 2009-02-25 | 南京工业大学 | Horizontal type anaerobic reactor |
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| CN102153197B (en) | 2012-08-22 |
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