CN102815790A - Simulation device and method for oxidation ditch technique - Google Patents
Simulation device and method for oxidation ditch technique Download PDFInfo
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- CN102815790A CN102815790A CN2012103486402A CN201210348640A CN102815790A CN 102815790 A CN102815790 A CN 102815790A CN 2012103486402 A CN2012103486402 A CN 2012103486402A CN 201210348640 A CN201210348640 A CN 201210348640A CN 102815790 A CN102815790 A CN 102815790A
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Abstract
The invention relates to a simulation device and method for an oxidation ditch technique. The device comprises an anaerobic reactor and a simulated reactor, wherein a water inlet of the anaerobic reactor is connected with a water inlet pipe through a sewage pump; a water outlet of the anaerobic reactor is connected with a water inlet of the simulated reactor; a water outlet of the simulated reactor is connected with a drain pipe through a first valve; a return sludge outlet of the simulated reactor is connected with a return sludge inlet of the anaerobic reactor through a sludge pump; a surplus sludge outlet of the simulated reactor is connected with a sludge discharge pipe through a second valve; an aerator of the simulated reactor is connected with a gas pump through a gas pipe; the anaerobic reactor is provided with a first stirrer; and the simulated reactor is provided with a second stirrer. The operation method adopts a multicycle form of the simulated oxidation ditch; and in view of the long-time operation effect, the operation effects of the oxidation ditch are equivalent. The invention can well reflect the operation characteristics and biological reaction conditions of the oxidation ditch.
Description
Technical field
The present invention relates to simulator and method that water pollutes process field, particularly a kind of oxidation ditch process.
Background technology
Oxidation ditch is a kind of modification of activated sludge process.Oxidation ditch is the annular irrigation canals and ditches of a sealing, and muddy water mixed solution circulates repeatedly in irrigation canals and ditches and makes pollutent obtain degraded, has pulling flow type and complete hybrid-type characteristics.Oxidation ditch has the unrivaled advantages of other Sludge System such as system is simple, easy to operate, excess sludge is few, current consumption is low as one of effective ways of biological sewage treatment, at home and abroad is used widely in the WWT.
Oxidation ditch generally adopts surperficial mechanical aeration, and aerator disperses fixed point to arrange, dissolved oxygen concentration raises when mixed solution is flowed through the aeration zone; When leaving the aeration zone because the dissolved oxygen of mikrobe oxygen consumption effect mixed solution progressively descends, so that be in anoxic condition, tangible dissolved oxygen concentration gradient appears; Repeat said process when experiencing the aeration zone again; Thereby in oxidation ditch, formed the aerobic alternation environment of good anoxic, created good envrionment conditions, helped the removal of nitrogen for biological denitrificaion; So oxidation ditch has the denitrogenation ability, just can reach the denitrogenation dephosphorizing effect if before oxidation ditch, set up anaerobic pond again.
Present to oxidation ditch denitrogenation and treatment effect research, the research means that adopts usually has two kinds: the one, and the oxidation ditch of employing actual motion, the 2nd, adopt the Oxidation Ditch Model simulation.Oxidation ditch scale by actual motion is big; Operational conditions changes difficulty, can not realize the purpose of experimental study well, and the Oxidation Ditch Model volume is less; A round-robin hydraulic detention time is very short, can not reflect the operation characteristic and the reaction condition of oxidation ditch well.Particularly be difficult to carry out or reach research effect to the research of the biological denitrificaion of oxidation ditch and multiple spot aeration research and utilization Oxidation Ditch Model.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of simulator and method of oxidation ditch process, can reflect the operation characteristic and the reaction condition of oxidation ditch well.
In order to achieve the above object, the technical scheme of the present invention's employing is:
A kind of simulator of oxidation ditch process; Comprise anaerobic reactor 1 and analogue reactor 2; The water-in of anaerobic reactor 1 is connected with water inlet pipe through sump pump A; The water outlet of anaerobic reactor 1 is connected with the water-in of analogue reactor 2, and the water outlet of analogue reactor 2 is connected with water shoot through the first valve C, and the returned sluge outlet of analogue reactor 2 is connected through the returned sluge inlet of sludge pump B and anaerobic reactor 1; The excess sludge outlet of analogue reactor 2 is connected with shore pipe through the second valve D; The aerator of analogue reactor 2 is connected with air pump E through tracheae, and anaerobic reactor 1 is equipped with the first whisking appliance F, and analogue reactor 2 is equipped with the second whisking appliance G.
Described sump pump A, sludge pump B, air pump E, the first valve C, the second valve D, the first whisking appliance F and the second whisking appliance G carry out full automatic control by the ASIC micro computer automatic control system.
Described anaerobic reactor 1 is an anaerobic reation pool.
Described analogue reactor 2 is the simulation reaction pond.
A kind of analogy method of oxidation ditch process may further comprise the steps:
The first step, sump pump A, sludge pump B, the first whisking appliance F and the second whisking appliance G open simultaneously, and water inlet and mud reflux and begin; Muddy water mixed solution in the anaerobic reactor 1 is from flowing in the analogue reactor 2; Behind 0.5-2min, sump pump A, sludge pump B stop, and water inlet and mud reflux and finishes;
In second step, anaerobic reactor 1 carries out hybrid reaction with analogue reactor 2 behind the water inlet end, and air pump E opens behind the 1-15min; Analogue reactor 2 carries out oxygenic aeration; Close air pump E behind the aeration 0.5-15min, open air pump E again behind the reaction 1-15min, carry out oxygenic aeration; Aeration 0.5-15min closes air pump E again; The intermittently starting of an interior air pump E of circulation and operation simulation realize the different aeration modes of oxidation ditch, and the time between twice water inlet is called a circulation, and be equivalent to simulate a cycling time of oxidation ditch a cycling time;
In the 3rd step, one of oxidation ditch is opened sump pump A again cycling time simultaneously after the end and sludge pump B advances water and mud refluxes when simulating, and carries out new circulation; After 3-6 circulation of operation, close the second whisking appliance G, the muddy water mixed solution in the analogue reactor 2 is staticly settled; Carry out mud-water separation; Behind the deposition 30min, open the first valve C and carry out draining, water displacement is the water yield that the front several cycles is advanced;
The 4th step began new circulation again after draining finishes, and after 3-6 circulation of operation, carried out sedimentation and drawing, move so repeatedly, and be equivalent from the last effect of long-time running effect and oxidation ditch, promptly realized the oxidation ditch process simulation.
In whole dry run; The first whisking appliance F opens always; The second whisking appliance G just closes when analogue reactor 2 depositions; Open At All Other Times, water inlet and the returned sluge that gets in the anaerobic reactor 1 carry out synchronously, and excess sludge discharges from analogue reactor 2 according to mud requirement in age unlatching second valve D before muddy water mixed solution begins to precipitate.
Advantage of the present invention is:
(1) this analogy method is the basis with the Circulation Ratio of Oxidation Ditch, and oxidation ditch biological respinse is spatially become temporal biological respinse, can reflect the fluidised form characteristic and the service performance of oxidation ditch preferably.
(2) analogy method that the present invention adopted can make the simulation test device volume little, not limited by the region to the experimental study of oxidation ditch, and analogy method more can suit the actual operating state of oxidation ditch, and simulation test is convenient reliable.
(3) the present invention can realize different aeration modes of oxidation ditch and denitrogenation dephosphorizing are carried out simulation test research, moves convenient and reliable.
Description of drawings
Accompanying drawing is the structural representation of simulator of the present invention.
Embodiment
To combine accompanying drawing that the present invention is further described below.
Referring to accompanying drawing; A kind of simulator of oxidation ditch process; Comprise anaerobic reactor 1 and analogue reactor 2, the water-in of anaerobic reactor 1 is connected with water inlet pipe through sump pump A, and the water outlet of anaerobic reactor 1 is connected with the water-in of analogue reactor 2; The water outlet of analogue reactor 2 is connected with water shoot through the first valve C; The returned sluge outlet of analogue reactor 2 is connected through the returned sluge inlet of sludge pump B and anaerobic reactor 1, and the excess sludge outlet of analogue reactor 2 is connected with shore pipe through the second valve D, and the aerator of analogue reactor 2 is connected with air pump E through tracheae; Anaerobic reactor 1 is equipped with the first whisking appliance F, and analogue reactor 2 is equipped with the second whisking appliance G.
Described sump pump A, sludge pump B, air pump E, the first valve C, the second valve D, the first whisking appliance F and the second whisking appliance G carry out full automatic control by the ASIC micro computer automatic control system.
Described anaerobic reactor 1 is an anaerobic reation pool.
Described analogue reactor 2 is the simulation reaction pond.
A kind of analogy method of oxidation ditch process may further comprise the steps:
The first step, sump pump A, sludge pump B, the first whisking appliance F and the second whisking appliance G open simultaneously, and water inlet and mud reflux and begin; Muddy water mixed solution in the anaerobic reactor 1 is from flowing in the analogue reactor 2; Behind 0.5-2min, sump pump A, sludge pump B stop, and water inlet and mud reflux and finishes;
In second step, anaerobic reactor 1 carries out hybrid reaction with analogue reactor 2 behind the water inlet end, and air pump E opens behind the 1-15min; Analogue reactor 2 carries out oxygenic aeration; Close air pump E behind the aeration 0.5-15min, open air pump E again behind the reaction 1-15min, carry out oxygenic aeration; Aeration 0.5-15min closes air pump E again; The intermittently starting of an interior air pump E of circulation and operation simulation realize the different aeration modes of oxidation ditch, and the time between twice water inlet is called a circulation, and be equivalent to simulate a cycling time of oxidation ditch a cycling time;
In the 3rd step, one of oxidation ditch is opened sump pump A again cycling time simultaneously after the end and sludge pump B advances water and mud refluxes when simulating, and carries out new circulation; After 3-6 circulation of operation, close the second whisking appliance G, the muddy water mixed solution in the analogue reactor 2 is staticly settled; Carry out mud-water separation; Behind the deposition 30min, open the first valve C and carry out draining, water displacement is the water yield that the front several cycles is advanced;
The 4th step began new circulation again after draining finishes, and after 3-6 circulation of operation, carried out sedimentation and drawing, move so repeatedly, and be equivalent from the last effect of long-time running effect and oxidation ditch, promptly realized the oxidation ditch process simulation.
In whole dry run; The first whisking appliance F opens always; The second whisking appliance G just closes when analogue reactor 2 depositions; Open At All Other Times, water inlet and the returned sluge that gets in the anaerobic reactor 1 carry out synchronously, and excess sludge discharges from analogue reactor 2 according to mud requirement in age unlatching second valve D before muddy water mixed solution begins to precipitate.
According to the oxidation ditch operation characteristic analysis can know that the most basic characteristics of oxidation ditch are: the one, the sealing annular irrigation canals and ditches; The 2nd, the waterpower internal reflux that tool is bigger.Oxidation ditch belongs to a kind of form of loop reactor, has the fluidised form characteristic similar with loop reactor, promptly in one or several circulation, shows as the plug-flow characteristic, and repeatedly circulation shows as complete mixed characteristic.
The pulling flow type reaction has similar residence time distribution with rhythmic reaction, thereby the two has similar fluidised form.Therefore, the plug-flow reaction of oxidation ditch in a circulation can be reacted with batch reactor plug-flow in time and simulated, and the storage effect spatially of repeatedly circulating of batch reactor just shows as the repeatedly cycle specificity of oxidation ditch.I.e. circulation pitch time of batch reactor water inlet, a cycling time of reflection oxidation ditch; The flooding quantity of intermittent water inflow is confirmed according to Circulation Ratio of Oxidation Ditch.Though batch reactor is an intermittent water inflow; Promptly once circulation is the pulling flow type at intermittence; But repeatedly circulation is promptly hybrid for fully for whole residence time operation, that is to say that the oxidation ditch of dry run at intermittence from the long-time running effect and the oxidation ditch of operation continuously are equivalent.
Pump in the simulation process, valve and whisking appliance are carried out full automatic control by the ASIC micro computer automatic control system.Simulator and analogy method are simple, convenient, reliable.The Oxidation Ditch Model that can solve this simulator can not truly reflect the problem that each round-robin actual operating state of oxidation ditch and material change, for the experimental study of oxidation ditch provides a kind of new approach.The present invention has considered the influence of anaerobic reaction to the oxidation ditch effect; Both can be used for the research of oxidation ditch denitrogenation dephosphorizing; Can anaerobic pond be used as hydrolysis acidification pool again; Thereby make this method also be used for the research of other trade effluent, the anaerobic reactor 1 among the present invention simultaneously also can save, and water inlet directly gets in the analogue reactor 2.
Claims (6)
1. the simulator of an oxidation ditch process; Comprise anaerobic reactor (1) and analogue reactor (2); It is characterized in that: the water-in of anaerobic reactor (1) is connected with water inlet pipe through sump pump (A); The water outlet of anaerobic reactor (1) is connected with the water-in of analogue reactor (2), and the water outlet of analogue reactor (2) is connected with water shoot through first valve (C), and the returned sluge outlet of analogue reactor (2) is connected through the returned sluge inlet of sludge pump (B) and anaerobic reactor (1); The excess sludge outlet of analogue reactor (2) is connected with shore pipe through second valve (D); The aerator of analogue reactor (2) is through the gentle pipe coupling of air pump (E), and anaerobic reactor (1) is equipped with first whisking appliance (F), and analogue reactor (2) is equipped with second whisking appliance (G).
2. the simulator of a kind of oxidation ditch process according to claim 1 is characterized in that: described sump pump (A), sludge pump (B), air pump (E), first valve (C), second valve (D), first whisking appliance (F) and second whisking appliance (G) are carried out full automatic control by the ASIC micro computer automatic control system.
3. the simulator of a kind of oxidation ditch process according to claim 1, it is characterized in that: described anaerobic reactor (1) is an anaerobic reation pool.
4. the simulator of a kind of oxidation ditch process according to claim 1 is characterized in that: described analogue reactor (2) is the simulation reaction pond.
5. the dry run method of an oxidation ditch process is characterized in that, may further comprise the steps:
The first step; Sump pump (A), sludge pump (B), first whisking appliance (F) and second whisking appliance (G) are opened simultaneously; Water inlet and mud reflux and begin, and the muddy water mixed solution in the anaerobic reactor (1) is from flowing in the analogue reactor (2), behind 0.5-2min; Sump pump (A), sludge pump (B) stop, and water inlet and mud reflux and finishes;
In second step, anaerobic reactor behind the water inlet end (1) and analogue reactor (2) carry out hybrid reaction, and air pump behind the 1-15min (E) is opened; Analogue reactor (2) carries out oxygenic aeration; Close air pump (E) behind the aeration 0.5-15min, open air pump (E) again behind the reaction 1-15min, carry out oxygenic aeration; Aeration 0.5-15min closes air pump (E) again; The intermittently starting of an interior air pump (E) of circulation and operation simulation realize the different aeration modes of oxidation ditch, and the time between twice water inlet is called a circulation, and be equivalent to simulate a cycling time of oxidation ditch a cycling time;
In the 3rd step, one of oxidation ditch is opened sump pump (A) again cycling time simultaneously after the end and sludge pump (B) advances water and mud refluxes when simulating, and carries out new circulation; After 3-6 circulation of operation, close second whisking appliance (G), the muddy water mixed solution in the analogue reactor (2) is staticly settled; Carry out mud-water separation; Behind the deposition 30min, open first valve (C) and carry out draining, water displacement is the water yield that the front several cycles is advanced;
The 4th step began new circulation again after draining finishes, and after 3-6 circulation of operation, carried out sedimentation and drawing, move so repeatedly, and be equivalent from the last effect of long-time running effect and oxidation ditch, promptly realized the oxidation ditch process simulation.
6. the dry run method of a kind of oxidation ditch process according to claim 5; It is characterized in that: in whole dry run; First whisking appliance (F) is opened always, and second whisking appliance (G) just cuts out when analogue reactor (2) precipitates, and opens At All Other Times; Water inlet and the returned sluge that gets in the anaerobic reactor (1) carry out synchronously, and excess sludge discharges from analogue reactor (2) according to mud requirement in age unlatching second valve (D) before muddy water mixed solution begins to precipitate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210348640 CN102815790B (en) | 2012-09-19 | 2012-09-19 | Simulation device and method for oxidation ditch technique |
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| CN 201210348640 CN102815790B (en) | 2012-09-19 | 2012-09-19 | Simulation device and method for oxidation ditch technique |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4537679A (en) * | 1977-11-04 | 1985-08-27 | Reid John H | Conservation of momentum in a barrier oxidation ditch |
| JP2001334286A (en) * | 2000-05-29 | 2001-12-04 | Hitachi Ltd | Simulation apparatus of oxidation ditch method |
| CN1341569A (en) * | 2001-09-21 | 2002-03-27 | 重庆康达环保股份有限公司 | Improved oxidation channel city sewage treamtent process |
| CN2605252Y (en) * | 2002-12-13 | 2004-03-03 | 聂原 | Efficient dephosphorizing-denitrificating improved oxydation channel |
| CN200953208Y (en) * | 2006-09-29 | 2007-09-26 | 北京工业大学 | A/O oxidation groove technology educational testing device |
| CN101659491A (en) * | 2008-08-27 | 2010-03-03 | 王强 | System and method for treating urban sewage |
-
2012
- 2012-09-19 CN CN 201210348640 patent/CN102815790B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4537679A (en) * | 1977-11-04 | 1985-08-27 | Reid John H | Conservation of momentum in a barrier oxidation ditch |
| JP2001334286A (en) * | 2000-05-29 | 2001-12-04 | Hitachi Ltd | Simulation apparatus of oxidation ditch method |
| CN1341569A (en) * | 2001-09-21 | 2002-03-27 | 重庆康达环保股份有限公司 | Improved oxidation channel city sewage treamtent process |
| CN2605252Y (en) * | 2002-12-13 | 2004-03-03 | 聂原 | Efficient dephosphorizing-denitrificating improved oxydation channel |
| CN200953208Y (en) * | 2006-09-29 | 2007-09-26 | 北京工业大学 | A/O oxidation groove technology educational testing device |
| CN101659491A (en) * | 2008-08-27 | 2010-03-03 | 王强 | System and method for treating urban sewage |
Non-Patent Citations (1)
| Title |
|---|
| 郭昌梓 等: "氧化沟不同A/O分区对脱氮效果影响的模拟实验研究", 《环境科学学报》 * |
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Granted publication date: 20130911 Termination date: 20210919 |