CN201777962U - Oxidation ditch system for processing sewage - Google Patents
Oxidation ditch system for processing sewage Download PDFInfo
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- CN201777962U CN201777962U CN2010202968743U CN201020296874U CN201777962U CN 201777962 U CN201777962 U CN 201777962U CN 2010202968743 U CN2010202968743 U CN 2010202968743U CN 201020296874 U CN201020296874 U CN 201020296874U CN 201777962 U CN201777962 U CN 201777962U
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- oxidation ditch
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- flotation
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Abstract
The utility model provides an oxidation ditch system for processing sewage, comprising an oxidation ditch pool body, wherein two flow guidance walls, two aerating apparatuses and two diving flow pushing devices are arranged in the pool body. A floating system is mounted in the oxidation ditch pool body along a longitudinal central line thereof; the floating system is arranged between the two aerating apparatuses; the oxidation ditch pool body is communicated with a water inlet pipe; a connection pipe is communicated between the oxidation ditch pool body and the floating system; and the floating system is communicated with a water outlet pipe. In the utility model, the oxidation ditch system is combined with the floating system, thus the oxidation ditch system is small in occupancy area, low in construction cost and low in investment cost; simultaneously, the floating system can remove mud through floating of the mud under aerobic conditions; anoxia corruption or phosphorus releasing cannot be generated, which improves separation effect, ensures the phosphorus to reach the standard, and has excellent processing effect. Furthermore, the moisture content of the mud processed by the floating system is low; the dehydration can be performed without concentration, thereby saving the operation cost.
Description
Technical field
The utility model relates to a kind of oxidation ditch system that is used for sewage disposal.
Background technology
In the sanitary sewage disposal field, the relative physics of biochemical process, chemical method are able to widespread use because of its lower working cost.As shown in Figure 1, be applied to a kind of oxidation ditch system of biochemical process, comprise by what two relative flat sidewall circular arc end wall relative with two formed and be similar to orthogonal oxidation ditch pond body 1, longitudinal center's line position is provided with partition wall 20 in this oxidation ditch pond body 1, be respectively equipped with arc training wall 30 between the two ends of partition wall 20 and two circular arc end walls, the both sides of oxidation ditch pond body 1 internal partition wall 20 are provided with the diving impeller 11 of a pair of rotary aeration disc that is staggeredly arranged 40 and a pair of positioned opposite.Oxidation ditch pond body 1 is communicated with back with water inlet line 42 and rising pipe 21, and the other end of rising pipe 21 is communicated with a settling tank (not shown).
The working process of oxidation ditch system is: sewage is entered in the oxidation ditch pond body 1 by back with water inlet line 42, sewage relies on the thrust of diving impeller 11 to flow at oxidation ditch pond body 1 internal recycle, during rotary aeration disc 40 work can for the sewage oxygenation in the pond body 1 with microbial consumption in supplying water, when rotary aeration disc 40 quits work, sewage in the pond body 1 just is in anoxic condition, sewage in the pond body 1 is under the plug-flow effect of diving impeller 11, form aerobic-anoxic and circulate, can remove organism effectively; Pass through nitration denitrification denitrogenation simultaneously, and remove phosphorus; Last treated sewage enters settling tank through rising pipe 21, finishes mud-water separation in settling tank.
In the conventional oxidation trench system, because oxidation ditch pond body 1 and settling tank are two independently pond bodies, so floor space is big, and investment is high.
Simultaneously, conventional oxidation trench system dephosphorization denitrogenation limited in one's ability, along with improving constantly of emission standard, traditional oxidation ditch system more and more is difficult to adapt to new standard-required.
In addition, in traditional oxidation ditch system, realize aeration aerating with rotary aeration disc (aeration rotary brush) 40, oxygen-transfer efficiency is low, the energy consumption height, and also dissolved oxygen concentration is wayward, lowest speed easy-regulating not forms sludgd deposition easily, thereby influences treatment effect in sewage oxygenation and the pond.
Also have, in traditional oxidation ditch system, settling tank utilizes the natural subsidence principle to carry out mud-water separation and handles, if sludge settling property is bad, directly causes the effluent quality can not be up to standard; In addition, in the settling tank water retention time control unfavorable, cause anaerobic environment easily, cause the mud come-up and release phosphorus, thereby water outlet chemical oxygen demand COD, ss suspended solid especially phosphorus concentration raise.And settling tank moisture percentage in sewage sludge height, cause returned sluge partial reflux amount big, energy consumption height, excess sludge partly need be done thickening and handle, and also cause certain energy consumption.The time of settling tank natural subsidence is long, causes the oxidation ditch system overall treatment efficiency low.
The utility model content
It is big that the utility model will solve the existing oxidation ditch system floor space that is used for sewage disposal, capital construction cost height, and processing efficiency is low, the technical problem of weak effect.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The oxidation ditch system that is used for sewage disposal of the present utility model, comprise the oxidation ditch pond body of forming by two relative flat sidewall circular arc end wall relative with two, both ends are provided with the circular-arc training wall of one side respectively in the body of described oxidation ditch pond, are provided with two aerating apparatuss and two diving impellers in the body of described oxidation ditch pond.Wherein, in the body of described oxidation ditch pond, air-flotation system is installed along its longitudinal center's line position, described air-flotation system is located between two described aerating apparatuss, described oxidation ditch pond body is communicated with water inlet pipe, be communicated with pipe connecting between described oxidation ditch pond body and the described air-flotation system, described air-flotation system is communicated with rising pipe.
Described air-flotation system comprises air flotation pool and the pressure air-dissolving equipment that shape and described oxidation ditch pond shape match, be divided into coagulation district, air flotation zone, sludge sump and clean water basin in the described air flotation pool successively, described coagulation is equipped with stirrer in the district, be provided with reliever and mud scraper in the described air flotation zone, be communicated with suction line between described pressure air-dissolving equipment and the described clean water basin, and be communicated with the Gas dissolving pipe road between the described reliever; Be communicated with many headers between the described clean water basin of described air flotation zone, an outlet valve is installed on the every described header, in the described sludge sump sludge pump is installed, and is communicated with mud return line and the outer comb of mud, described rising pipe is communicated in the clean water basin of described air-flotation system; Pipe connecting between described oxidation ditch pond body and the described air-flotation system is communicated in the coagulation district of described air-flotation system, has communicating aperture between described coagulation district and the air flotation zone.
Described oxidation ditch system comprises that also being arranged on the intravital biology in described oxidation ditch pond selects the pond, and described water inlet pipe and described mud return line all are communicated in the described biological pond of selecting, and the sewage of selecting the pond to handle through described biology enters described oxidation ditch pond body.
The described biological pond of selecting is arranged in the described air flotation pool.
Described oxidation ditch system also comprises and is arranged on the intravital anaerobic pond in described oxidation ditch pond, in the described anaerobic pond submersible agitator is installed, and described water inlet pipe is communicated in described anaerobic pond, is communicated with pipe connecting between described anaerobic pond and the described oxidation ditch pond body.
Described anaerobic pond is arranged in the described air flotation pool.
Described oxidation ditch system also comprises and is arranged on the intravital anaerobic pond in described oxidation ditch pond, in the described anaerobic pond submersible agitator is installed, and described anaerobic pond and described biological the selection are communicated with pipe connecting between the pond.
Described anaerobic pond and the described biological pond of selecting all are arranged in the described air flotation pool.
Described aerating apparatus comprises frequency conversion fan and the aeration plate that links to each other with this frequency conversion fan by pipeline, has a plurality of solarization air caps on the described aeration plate, and the density of these solarization air caps is successively decreased to dredging by close along water (flow) direction.
Described outlet valve is a sleeve valve.
As shown from the above technical solution, advantage and the positively effect that is used for the oxidation ditch system of sewage disposal of the present utility model is: the utility model, air-flotation system are built body middle part, oxidation ditch pond in, the mode that promptly adopts oxidation ditch system and air-flotation system to build jointly, floor space is little, and capital cost is few, invests low, and irrigation canals and ditches are darker, can utilize the aeration plate oxygenation, the coefficient of oxygen utilization height, energy consumption is low, help saving the overall operation cost of oxidation ditch system, and can increase substantially processing efficiency; Simultaneously, it is to remove mud by the come-up of mud flco under aerobic condition that air-flotation system is handled, and therefore can not cause the anoxic corruption or release phosphorus, has improved separating effect, and can guarantee that phosphorus is up to standard, so treatment effect is good.In addition, the moisture percentage in sewage sludge that air-flotation system is handled is low, does not need to concentrate and can carry out processed, has also further saved running cost.
With reference to the accompanying drawing description of a preferred embodiment, above-mentioned and other purpose of the present utility model, feature and advantage will be more obvious by following.
Description of drawings
Fig. 1 is the structural representation of the traditional oxidation ditch system that is used for sewage disposal;
Fig. 2 is the structural representation that is used for the oxidation ditch system of sewage disposal of the present utility model.
Embodiment
Describe specific embodiment of the utility model in detail below in conjunction with accompanying drawing.Should be noted that the embodiments described herein only is used to illustrate, be not limited to the utility model.
As shown in Figure 2, oxidation ditch system of the present utility model comprises by what two relative flat sidewall circular arc end wall relative with two formed being similar to orthogonal oxidation ditch pond body 1 that both ends are provided with the circular-arc training wall 30 of one side respectively in this oxidation ditch pond body 1.Longitudinal center's line position at oxidation ditch pond body 1 is equipped with air-flotation system.Air-flotation system comprises air flotation pool 5, the pressure air-dissolving equipment 6 that shape and oxidation ditch pond body 1 shape match.Be divided into coagulation district 51, air flotation zone 54, sludge sump 8 and clean water basin 2 in the air flotation pool 5 again.Stirrer 52 is installed in the coagulation district 51, reliever 63 and mud scraper 55 are installed in the air flotation zone 54, be communicated with suction line 61 between pressure air-dissolving equipment 6 and the clean water basin 2, and be communicated with Gas dissolving pipe road 62 between the reliever 63.Being communicated with many headers 71 between air flotation zone 54 and the clean water basin 2, a water outlet sleeve valve 7 is installed on the every header 71, can certainly be the outlet valve of other types.Sludge pump 81 is installed in the sludge sump 8.The leading portion in coagulation district 51 is provided with biological pond 4 and the anaerobic pond 3 selected successively in air flotation pool 5.Submersible agitator 32 is installed in the anaerobic pond 3.Two aeration plates 12 and two diving impellers 11 are installed in the oxidation ditch between air flotation pool 5 and oxidation ditch pond body 1.The biological pond 4 of selecting is communicated with sewage water inlet pipe 42, the biological selection is communicated with pipe connecting 41 between pond 4 and the anaerobic pond 3, be communicated with pipe connecting 31 between anaerobic pond 3 and the oxidation ditch, be communicated with pipe connecting 13 between oxidation ditch and the air flotation pool 5, coagulation district 51 is provided with some communicating apertures with air flotation zone 54, as square hole 53, sludge sump 8 is communicated with mud return line 83 and the outer comb 82 of mud, and clean water basin 2 are communicated with rising pipe 21.
In the utility model, biological selection pond 4 also can only be set or anaerobic pond 3 only is set, perhaps the two all is not provided with.The biological selection under pond 4 and anaerobic pond 3 situations be not set, pending sewage is directly entered in the oxidation ditch pond body 1 by water inlet pipe 42, the sewage of handling through oxidation ditch enters the coagulation district 51 of air-flotation system through pipe connecting 13, and mud return line 83 is communicated to the coagulation district 51 of air-flotation system; The biological selection under 4 situations of pond only is being set, and pending sewage enters biological the selection in the pond 4 by water inlet pipe 42, and the sewage of selecting pond 4 to handle through biology enters oxidation ditch pond body 1 through pipe connecting 41, and mud return line 83 is communicated to the biological pond 4 of selecting; Only be provided with under anaerobic pond 3 situations, pending sewage enters anaerobic pond 3 by water inlet pipe 42, and the sewage of handling through anaerobic pond 3 enters oxidation ditch pond body 1 through pipe connecting 31, and mud return line 83 is communicated in the coagulation district 51 of air-flotation system.
The working process of oxidation ditch system of the present utility model is: the pretreated sewage of process enters the biological pond 4 of selecting by water inlet pipe 42 to be mixed with returned sluge, finishes biological the selection, and the nitric nitrogen that while denitrification returned sluge is brought into generates nitrogen and discharges; Mixed solution enters anaerobic pond 3 by pipe connecting 41 gravity flows, be in the excessive phosphorus bioprocesses of releasing of finishing polyP bacteria under the anoxybiotic environment at anaerobic pond 3, degradation of organic substances is provided with submersible agitator 32 in the anaerobic pond 3 simultaneously, mixes in order to prevent the sedimentary mixed solution that makes simultaneously; Sewage enters oxidation ditch main body 1 from anaerobic pond 3 by pipe connecting 31, straight line channel initial point position in oxidation ditch main body 1 is equipped with diving impeller 11, sewage relies on the power cycle of diving impeller 11 to flow in oxidation ditch main body 1, and lowest speed prevents sludgd deposition greater than 0.3m/s.At the downstream of underwater scooter 11 bottom of trench aeration plate 12 is installed, have a plurality of solarization air caps on the aeration plate 12, the density of these solarization air caps is successively decreased to dredging by close along water (flow) direction, the dissolved oxygen numerical value of regulating mixed solution by online dissolved oxygen meter control of conversion gas blower (not shown) successively decreases from 2mg/l to 0.2mg/l, and mixed solution is finished nitrated/denitrification denitrogenation in aerobic-anoxic alternate cycles process;
Mixed solution enters the coagulation district 51 of air flotation pool 5 front ends by pipe connecting 13 at the aerobic section end of oxidation ditch main body 1, at these coagulation district 51 dosing coagulants, stirrer 52 is set in the coagulation district 51 coagulating agent and mixed solution are stirred, mixed solution forms clear water and the mud flco enters air flotation zone 54 by the some square holes 53 between coagulation district 51 and the air flotation zone 54; The air flotation pool 5 supporting pressure air-dissolving equipment 6 that are equipped with, pressure air-dissolving equipment 6 carries out molten gas within it by the clear water in the pipeline 61 suction clean water basin 2 and forms dissolved air water, dissolved air water discharges by pipeline 62 to reliever 63, produce diameter 30-50um micro-bubble, micro-bubble is attached to the mud flco, make to float on liquid level on the mud, clear water is then collected after sleeve valve 7 enters clean water basin 2 by header at the bottom of the pond 71.
The mud flco that floats on liquid level strikes off sludge sump 8 by mud scraper 55, under the effect of the sludge pump 81 of returned sluge in being arranged at sludge sump 8, be pumped to through mud return line 83 and biological select pond 4 to mix with raw waste water to finish biology selection and denitrification, excess sludge comb 82 outside mud effluxes; Drain into the clear water of clean water basin 2 through water outlet sleeve valve 7, in clean water basin 2, after the sterilization, efflux or reuse by rising pipe 21.
Select to utilize the high organic loading strain screening in the pond 4 at biology, suppress hyphomycetic growth, improve the clearance of each pollutent, thoroughly consume the dissolved oxygen in the mixed solution under anoxic condition, the nitric nitrogen that while denitrification returned sluge is brought into is created anoxic condition.
In anaerobic pond, polyP bacteria absorbs the very easily biodegradable organic substances such as acetate, formic acid, propionic acid and ethanol in the sewage, stores in vivo as nutrition source, simultaneously the poly-phosphate that stores in the body is decomposed, with P0
4 3The form of-P is discharged into environment, so that the acquisition energy, it is required to keep its existence for polyP bacteria in adverse environment, and the interior polyphosphoric acid salt of polyP bacteria thalline this moment just fades away, and be discharged in the external environment with the form of solubility monophosphate, for the excessive suction phosphorus of aerobic section is prepared.
In oxidation ditch main body 1, sewage relies on the power of underwater scooter 11 to flow at oxidation ditch main body 1 internal recycle, rely on the frequency conversion gas blower by 12 oxygenations of micro-pore aeration dish, by the density of micropore distribution and the dissolved oxygen concentration that takes mixed solution in the accurate controlled oxidation ditch main body 1 by the frequency conversion gas blower of online dissolved oxygen meter control, in the aerobic-anoxic alternate environment of guaranteeing that the mixed solution that circulates is in the oxidation irrigation canals and ditches, finish the nitrification and denitrification reaction, remove ammonia nitrogen.
The treatment stage of air-flotation system, dissolved air water possesses oxygenation simultaneously, makes mixed solution be in oxygen condition, does not have the release of phosphorus.Because the moisture percentage in sewage sludge after air-flotation system is handled is lower than settling tank mud, so reduced returned sluge flow and excess sludge treatment scheme and expense.
Clear water after air-flotation system is handled enters clean water basin 2 by the water outlet sleeve valve 7 of air flotation pool 5 ends, the sterilization reuse.Water outlet sleeve valve 7 can be adjusted the water level elevation of control air flotation pool by the height of regulating sleeve.
Though described the utility model with reference to several exemplary embodiments, should be appreciated that used term is explanation and exemplary and nonrestrictive term.The spirit or the essence that do not break away from utility model because the utility model can specifically be implemented in a variety of forms, so be to be understood that, the foregoing description is not limited to any aforesaid details, and should be in the spirit and scope that claim limited of enclosing explain widely, therefore fall into whole variations in claim or its equivalent scope and remodeling and all should be the claim of enclosing and contain.
Claims (10)
1. oxidation ditch system that is used for sewage disposal, comprise the oxidation ditch pond body of forming by two relative flat sidewall circular arc end wall relative (1) with two, the interior both ends of described oxidation ditch pond body (1) are provided with one side circular-arc training wall (30) respectively, are provided with two aerating apparatuss and two diving impellers (11) in the described oxidation ditch pond body (1); It is characterized in that: in described oxidation ditch pond body (1), air-flotation system is installed along its longitudinal center's line position, described air-flotation system is located between two described aerating apparatuss, described oxidation ditch pond body (1) is communicated with water inlet pipe (42), be communicated with pipe connecting (13) between described oxidation ditch pond body (1) and the described air-flotation system, described air-flotation system is communicated with rising pipe (21).
2. the oxidation ditch system that is used for sewage disposal as claimed in claim 1, it is characterized in that: described air-flotation system comprises air flotation pool (5) and the pressure air-dissolving equipment (6) that shape and described oxidation ditch pond body (1) shape match, be divided into coagulation district (51) in the described air flotation pool (5) successively, air flotation zone (54), sludge sump (8) and clean water basin (2), stirrer (52) is installed in the described coagulation district (51), be provided with reliever (63) and mud scraper (55) in the described air flotation zone (54), be communicated with suction line (61) between described pressure air-dissolving equipment (6) and the described clean water basin (2), and be communicated with Gas dissolving pipe road (62) between the described reliever (63); Be communicated with many headers (71) between described air flotation zone (54) and the described clean water basin (2), every described header (71) is gone up an outlet valve is installed, sludge pump (81) is installed in the described sludge sump (8), and being communicated with mud return line (83) and the outer comb (82) of mud, described rising pipe (21) is communicated in the clean water basin (2) of described air-flotation system; Pipe connecting (13) between described oxidation ditch pond body (1) and the described air-flotation system is communicated in the coagulation district (51) of described air-flotation system, has communicating aperture between described coagulation district (51) and the air flotation zone (54).
3. the oxidation ditch system that is used for sewage disposal as claimed in claim 2, it is characterized in that: described oxidation ditch system also comprises the biology selection pond (4) that is arranged in the described oxidation ditch pond body (1), described water inlet pipe (42) and described mud return line (83) all are communicated in the described biological pond (4) of selecting, and enter described oxidation ditch pond body (1) through the described biological sewage of selecting pond (4) to handle.
4. the oxidation ditch system that is used for sewage disposal as claimed in claim 3 is characterized in that: the described biological pond (4) of selecting is arranged in the described air flotation pool (5).
5. the oxidation ditch system that is used for sewage disposal as claimed in claim 2, it is characterized in that: described oxidation ditch system also comprises the anaerobic pond (3) that is arranged in the described oxidation ditch pond body (1), submersible agitator (32) is installed in the described anaerobic pond (3), described water inlet pipe (42) is communicated in described anaerobic pond (3), is communicated with pipe connecting (31) between described anaerobic pond (3) and the described oxidation ditch pond body (1).
6. the oxidation ditch system that is used for sewage disposal as claimed in claim 5 is characterized in that: described anaerobic pond (3) is arranged in the described air flotation pool (5).
7. the oxidation ditch system that is used for sewage disposal as claimed in claim 3, it is characterized in that: described oxidation ditch system also comprises the anaerobic pond (3) that is arranged in the described oxidation ditch pond body (1), submersible agitator (32) is installed in the described anaerobic pond (3), and described anaerobic pond (3) and described biological the selection are communicated with pipe connecting (41) between the pond (4).
8. the oxidation ditch system that is used for sewage disposal as claimed in claim 7 is characterized in that: described anaerobic pond (3) and the described biological pond (4) of selecting all are arranged in the described air flotation pool (5).
9. as the arbitrary described oxidation ditch system that is used for sewage disposal of claim 1-8, it is characterized in that: described aerating apparatus comprises frequency conversion fan and the aeration plate (12) that links to each other with this frequency conversion fan by pipeline, described aeration plate has a plurality of solarization air caps on (12), and the density of these solarization air caps is successively decreased to dredging by close along water (flow) direction.
10. the oxidation ditch system that is used for sewage disposal as claimed in claim 9 is characterized in that: described outlet valve is sleeve valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202968743U CN201777962U (en) | 2010-08-19 | 2010-08-19 | Oxidation ditch system for processing sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202968743U CN201777962U (en) | 2010-08-19 | 2010-08-19 | Oxidation ditch system for processing sewage |
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| Publication Number | Publication Date |
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| CN201777962U true CN201777962U (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202968743U Expired - Lifetime CN201777962U (en) | 2010-08-19 | 2010-08-19 | Oxidation ditch system for processing sewage |
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| CN (1) | CN201777962U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036467A (en) * | 2015-07-21 | 2015-11-11 | 深圳市碧园环保技术有限公司 | Artificial wetland waste water pretreatment method for small-town waste water treatment |
| CN106630498A (en) * | 2017-02-21 | 2017-05-10 | 云南水务投资股份有限公司 | Integral rural sewage treatment equipment |
| CN108503152A (en) * | 2018-06-21 | 2018-09-07 | 绍兴水处理发展有限公司 | A kind of stain disease denitrification process |
| CN108585187A (en) * | 2018-07-12 | 2018-09-28 | 重庆交通大学 | Rural area family sewage-treatment plant and method |
-
2010
- 2010-08-19 CN CN2010202968743U patent/CN201777962U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036467A (en) * | 2015-07-21 | 2015-11-11 | 深圳市碧园环保技术有限公司 | Artificial wetland waste water pretreatment method for small-town waste water treatment |
| CN105036467B (en) * | 2015-07-21 | 2018-03-16 | 深圳市碧园环保技术有限公司 | A kind of method of artificial swamp sewage disinfection treatment for Small Town Wastewater processing |
| CN106630498A (en) * | 2017-02-21 | 2017-05-10 | 云南水务投资股份有限公司 | Integral rural sewage treatment equipment |
| CN106630498B (en) * | 2017-02-21 | 2023-07-25 | 云南水务投资股份有限公司 | Integrated village and town sewage treatment equipment |
| CN108503152A (en) * | 2018-06-21 | 2018-09-07 | 绍兴水处理发展有限公司 | A kind of stain disease denitrification process |
| CN108585187A (en) * | 2018-07-12 | 2018-09-28 | 重庆交通大学 | Rural area family sewage-treatment plant and method |
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Granted publication date: 20110330 |