CN102134124B - Integrated oxidation ditch - Google Patents
Integrated oxidation ditch Download PDFInfo
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- CN102134124B CN102134124B CN2011101023524A CN201110102352A CN102134124B CN 102134124 B CN102134124 B CN 102134124B CN 2011101023524 A CN2011101023524 A CN 2011101023524A CN 201110102352 A CN201110102352 A CN 201110102352A CN 102134124 B CN102134124 B CN 102134124B
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- oxidation ditch
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- precipitation zone
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to an improved integrated oxidation ditch, which comprises an oxidation ditch body, an aeration device at the bottom or the lower middle part and a built-in partition precipitation zone at the tail end of a treatment flow. The integrated oxidation ditch is characterized in that: a suspended filler is filled in the oxidation ditch body, a filler intercepting net is arranged at the water inlet of at least the precipitation zone, and a transverse herringbone folded plate or a bent pipe mud-water separation filler is arranged in the precipitation zone. The quantity of microbes in the oxidation ditch is increased, the treatment volume load is improved, the increased biomass is mainly centralized on the suspended filler, the actual suspended sludge concentration in the water of the oxidation ditch is not increased or reduced and can be controlled to be less than 3,000mg/l, the built-in partition precipitation zone can be designed according to the high load, the biomass is increased, the area of the precipitation zone is not increased or properly reduced, the occupation area of the oxidation ditch is actually and effectively saved, the occupation is saved by 1/3 to 1/5 compared with a common deep oxidation ditch and by 10 to 20 percent compared with a deep oxidation ditch with a precipitation zone, the suspended biological filler can save the running energy consumption and the running energy consumption can be reduced by 20 to 30 percent.
Description
Technical field
The present invention is the improvement to integrated oxidation ditch, and it is high to relate in particular to a kind of oxidation ditch biomass, and suspended sludge is few in the water, and built-in settling region area is little, and end aeration rises the integrated oxidation ditch of deep channel type.
Background technology
Oxidation ditch process is as the innovation of activated sludge process, compare with traditional activated sludge process, have the characteristics such as technical process is simple, operational management convenient, treatment effect is stable, effluent quality is good, be to use more a kind of ripe water technology in sewage disposal, in water treatment, occupy quite high application percentage.Oxidation ditch usually all be show to expose to the sun device such as rotating disk, turn brush, surface aerating machine etc., realize simultaneously oxygen supply and plug-flow circulation in the water, yet because only abutment surface plug-flow drive of mixed soil water cycle, therefore ditch depth is more shallow usually generally is no more than 4.5 meters, the downstream installs flow deflector additional also just suitably increases the degree of depth, perhaps improves the bottom fluidised form and reduces sludge settling.Show to expose to the sun the plug-flow oxygen supply, not only reduced the utilization ratio of oxygenation, and sludge concentration is restricted and can not improves, usually oxidation ditch design sludge concentration≤3500mg/l causes sludge loading little, and the processing residence time is long, cause occupation of land relatively large, thereby the oxidation ditch occupation of land is large, and sludge concentration is low, becomes the significant obstacle that the conventional oxidation ditch is promoted.
Chinese patent CN1693235A air lifting deep water type oxidizing tank, adopting the interval that bottom aeration substitution list is set exposes to the sun, utilizing the aeration gas lift to drive on the whole current direction flows, thereby become the propulsion source of whole oxidation ditch operation, thereby make ditch depth obtain strengthening, sludge concentration and coefficient of oxygen utilization are improved simultaneously, sludge concentration can design to 4000mg/l, improved oxidation ditch and processed load, reduced the residence time, reduced so that take up an area.Bottom aeration air lift type deep channel type oxidation channel, although overcome the shortcoming of surface aeration oxidation ditch, but still the mud-water separation second pond need to be set outside oxidation ditch, and reflux, because processing requirement second pond area is usually near oxidation ditch, thereby the actual effect that saves land is still limited; Secondly, the material alterations reflux operation is not complicated, and saves backflow energy consumption and corresponding refluxing unit.
Chinese patent CN101269879 Zanjon type gas-lift stream-pull tridimensional circulation type inversion A
2The O integral co-construction oxidation ditch on gas lift plug-flow basis, is divided into upper and lower two-layer raceway groove (top-layer channel is aerobic zone, and lower floor's raceway groove is the oxygen-starved area) with tap drain, and front end arranges solid-liquid displacement zone, and the rear end is anaerobic zone.External settling region is moved in the oxidation ditch, reach and save the settling tank area, save whole technique and take up an area.
Chinese patent CN101269880 Zanjon type gas-lift stream-pull tridimensional circulation type integral co-construction oxidation ditch, formed by anaerobic zone, oxygen-starved area, micro-hole aerator group aerobic zone and solid-liquid displacement zone, the tap drain front end is anaerobic zone, tap drain is divided into the upper strata aerobic zone between anaerobic zone and tap drain end, lower floor oxygen-starved area, solid-liquid displacement zone arrange between anaerobic zone and the n level aerobic reactor zone.
Although above-mentioned two patents proposition moves to the settling region in the oxidation ditch and arranges, establish in addition the settling tank floor space to reach minimizing, and can omit sludge reflux operation and power consumption, excess sludge can easyly be discharged, also save settling tank and scrape mud equipment, make operation become simple.In engineering of water treatment settling tank area design, when sludge concentration for example relatively low≤during 3500mg/l, the load value is larger, the settling tank load can be according to 1.0-3.0m
3/ m
2.h design; When sludge concentration relatively for example high 〉=during 3500mg/l, the load value is lower, the settling tank load can only be according to 0.5-1.5m
3/ m
2.h design.Yet because deep channel type oxidation channel adopts the bottom aeration can keep higher sludge concentration (volumetric loading), shorten the residence time.But high sludge concentration must add major groove inner suspension shape sludge concentration, and the interior higher suspension shape sludge concentration of ditch is so that mud-water separation can only be by low surface load design, cause thus the settling region area occupied larger, thereby strengthened the oxidation ditch occupation of land, and may be so that the area that adopts deep channel type to save, in the settling region area increases, be cancelled, thereby the actual area that saves land is limited.Secondly, the popular mud proportion through flocculating in the sewage is generally greater than 1, and suspended sludge Enrichment in the water is so that for realizing the oxidation ditch Hydraulic Circulation, needing increases operation energy consumption, so high sludge concentration brings the increase of operation energy consumption.
Above-mentioned deficiency still has is worth improved place.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provides a kind of oxidation ditch biomass high, and suspended sludge is few in the water, the little integrated oxidation ditch of built-in settling region area.
The object of the invention realizes, the main improvement is to add floating stuffing in the deep channel type oxidation channel of bottom aeration, barrier is set around in the settling region, and in the settling region, use horizontal herring-bone flap or broken pipe mud-water separation filler instead, reach and both improve biomass in the oxidation ditch, improve oxidation ditch processing volume load, again so that the biomass that increases mainly concentrates on the floating stuffing, and suspended sludge concentration does not increase or reduces in addition in the water, can keep the low suspended sludge concentration of common oxidation ditch even be lower than common oxidation ditch suspended sludge concentration, thereby the settling region can be designed by high loading, and reaching the raising biomass does not increase the settling region area or also has suitably minimizing; And filler proportion is not higher than sewage proportion after the filler suspension biofilm, is suspended in the water, thereby is not required to be settlement prevention and increases operation energy consumption (not needing to increase in addition flow velocity); Horizontal herring-bone flap or broken pipe filler, not only can avoid suddenly increase of sludge concentration or minimizing to cause the mud rising phenomenon, and the oblique flow deflector buffering of lower floor is conducive to form the dynamic suspension layer, can utilize its well flocculation and adsorption, make tiny the material that enters the settling region be adsorbed increasing, be conducive to improve the clearance of this partial suspended particle.Thereby overcome the deficiencies in the prior art, realized the object of the invention.Specifically, integrated oxidation ditch of the present invention, comprise oxidation ditch pond body, the aerating apparatus of the end or middle and lower part, the built-in separation for the treatment of scheme end settling region, it is characterized in that in the body of oxidation ditch pond the suspension type filler being arranged, the settling region water-in has the filler barrier at least, the built-in horizontal herring-bone flap in settling region or broken pipe mud-water separation filler.
Among the present invention.
Oxidation ditch can be the ditch type of various forms oxidation ditch in the prior art, and by the difference setting of aeration zone, bottom, the change of oxygen reaction zone length can form respectively A/O technique, A
2/ O technique, and by a plurality of water-ins are set, can also be multipoint water feeding A/O or A
2/ O technique.
The end or middle and lower part aerating apparatus, it acts on same prior art, and form is not limit, and can adopt various bottoms aerating apparatus in the existing water treatment.The setting of aerating apparatus can arrange at the bottom of the ditch pond such as Chinese patent CN1693235A, also can will partly separate levels such as Chinese patent CN101269879, CN101269880, in the bottom, upper strata (Chi Shen middle and lower part) is set, and lower floor forms anaerobic zone.
Add the suspension type filler, mainly be from both improving biomass in the oxidation ditch, improve and process load, again so that large number of biological be attached on the filler, do not increase as far as possible or reduce and add suspended sludge concentration consideration in the water, the suspended sludge that also can make reasonable in design slightly descends, make the high-biomass oxidation ditch, suspended sludge can remain on the low sludge quantity of common oxidation ditch in the actual water, with this built-in settling region can be designed by high loading, reaching the increase biomass does not increase or reduces the settling region area and save operation energy consumption, and this processes the different of employing floating stuffing for add floating stuffing in oxidation ditch of the present invention from ortho-water.Said suspension type filler can be the suspension type filler (proportion still can keep suspended state to select with prior art after with settled organism) of each form of using in the water treatment.Wherein a kind of better is to select all relative large floating stuffings of volume and specific surface area, hollow colyliform short tube floating stuffing for example, large volume is conducive to the interception of settling region water inlet barrier, in addition hollow colyliform short-tube filling, specific surface area is large, and having inside and outside two different microenvironments, microbial population is abundant.Filler adds the 15-30% that volume accounts for oxidation ditch, specifically looks in the water suspended sludge concentration and determines.
The settling region is to press in water treatment process to determine in oxidation ditch treatment scheme end, enters at last the settling region through the previous process processing and carries out mud-water separation.The layout of settling region can have various ways, but better is to consider to leave the moving passage for the treatment of solution circulation, and circulating of filler is conducive to enrich microbial population.
At least the settling region water-in has the filler barrier, and major function is the interception floating stuffing, and not making it enter the settling region affects mud-water separation, and runs off with water outlet.
The built-in horizontal herring-bone flap in settling region or broken pipe mud-water separation filler, swash plate (pipe) by two opposite directions forms, upper strata swash plate (pipe) plays the mud-water separation function with swash plate in the sedimentation pond for water treatment (pipe) filler, the reverse swash plate of lower floor, can play the flow velocity buffering reaches bottom water inlet uniformly distributing, and also help and form the dynamic suspension sludge blanket, can give full play to the strong flocculation of this suspended layer mud and adsorption, tiny the material that enters the settling region is adsorbed builds up to increase, thereby strengthened not effective clearance of free settling mud of this part.The up and down flap of two opposite directions or broken pipe, a kind of better is that lower floor's flap or broken pipe length are the 1/3-1/5 on upper strata, upper strata flap length is conducive to improve separation efficiency.
Integrated oxidation ditch of the present invention, with respect to prior art, owing in end aeration lift-type deep channel type oxidation channel, add floating stuffing (not selecting hanging filler), reach and both strengthen microbial biomass in the oxidation ditch, high-biomass can reach 8000mg/l, the processing volume load is improved, again so that the biomass that increases mainly concentrates on the floating stuffing, so that actual suspended sludge concentration does not increase or reduces in addition in the oxidation ditch-water, can be controlled at below the 3000mg/l, can keep the low suspended sludge concentration of common oxidation ditch even be lower than common oxidation ditch suspended sludge concentration, thereby built-in separation settling region can be designed by high loading, reaching the increase biomass does not increase the settling region area or also has suitably minimizing, reality has effectively been saved the oxidation ditch floor space, take up an area more common deep channel type oxidation channel and save 1/3-1/5, save 10-20% with the deep channel type oxidation channel of settling region.If the deep channel type oxidation channel of retainer belt settling region takes up an area, because the treatment time prolongation can also improve outlet effect.Secondly, the whole proportion of filler still is not higher than sewage proportion after the suspension biologic filler biofilm, can be suspended in the water, thereby do not need such as prior art for preventing that high sludge settling from improving flow velocity and increasing operation energy consumption (if single the employing improved sludge quantity, then afore-mentioned can appear), experiment relatively operation energy consumption can reduce 20-30%.Horizontal herring-bone flap or broken pipe mud-water separation filler in the settling region, not only accelerated mud-water separation, and the reverse flap of lower floor or broken pipe, can play the flow velocity buffering reaches the water inlet uniformly distributing, and be conducive to form the dynamic suspension sludge blanket, can give full play to the strong flocculation of this suspended layer mud and adsorption, tiny the material that enters the settling region is adsorbed build up to increase, thereby strengthened not effective clearance of free settling mud of this part; In addition, horizontal herring-bone flap or broken pipe filler also help and avoid suddenly increase of sludge concentration or minimizing to cause the mud rising phenomenon.
Optimize specific embodiment below in conjunction with three; essence of the present invention is further understood in exemplary illustration and help; but the embodiment detail only is for the present invention is described; do not represent the present invention and conceive lower whole technical scheme; therefore should not be construed as the total technical scheme of the present invention is limited; some are In the view of the technician; the unsubstantiality that does not depart from the present invention's design increases and/or change; for example simple the change or replacement of technical characterictic to have same or similar technique effect all belongs to protection domain of the present invention.
Description of drawings
Fig. 1 is a kind of embodiment structural representation.
Fig. 2 is Figure 1A-A sectional structure synoptic diagram.
Fig. 3 is another kind of embodiment structural representation.
Fig. 4 is Fig. 3 A-A sectional structure synoptic diagram.
Fig. 5 is another embodiment sectional structure synoptic diagram.
Embodiment
Embodiment 1: referring to Fig. 1,2, integrated oxidation ditch of the present invention is separated symmetric double ditch arranged side by side by partition wall 14, and there is semicircle the connection at two ends, form the circulation oxidation ditch.Have alternate some groups in single ditch, every Group has alternate up and down staggered dividing plate 17.1,17.2 and 17.3 to be separated to form up-flow district 3 and to fall stream district 4, with and subsequent biochemical zone 16, form oxidation ditch A
2/ O technique adds the commercial hollow colyliform short tube floating stuffing 2 that accounts for ditch volume ratio 20% in the oxidation ditch.3 bottoms, up-flow district are equipped with type micro-pore aerator 8, the built-in settling region 12 of being separated by partition wall 6 of oxidation ditch treatment scheme end, the settling region width accounts for oxidation furrow width 2/3, reserve and be circulated throughout circulation road 18, asymmetric horizontal herring-bone flap mud-water separation filler 13 is arranged in the settling region, it is about 1/3 that filler lower part height accounts for upper part, and settling region herring-bone flap mud-water separation filler below side wall water-in has filler to stop grid 9, stops floating stuffing to enter the settling region.
Dispose of sewage and enter oxidation ditch by water-in 1, form upwelling by bottom, up-flow district aerator 8 aerations, form the circulation impellent, then turn to and fall stream district 4, and the biochemical zone 16 of rear end, through alternate some groups of up-flows, stream, biochemical formation fall, promote in the ditch muddy water and floating stuffing and flow along the direction of arrow and form circulation A
2/ O technique, to the oxidation ditch end, a part enters settling region 12 by falling 4 belows, stream district by the side, and 2 of floating stuffings are stopped not enter the settling region and suspend and rise that a part of cycling stream passage 18 through between settling region and oxidation ditch continues the circulation circulation by block lattice 9.Enter settling region sewage through horizontal herring-bone flap mud-water separation filler 13 reverse flow mud-water separation, clear liquid is collected through top, settling region effluent weir 11, discharges oxidation ditch by water port 7.The mud that settling region 12 produces, a part are back to adjacent up-flow district 3 by mud return line 15 and continue circulation, another part with the excess sludge form by valve control shore pipe 10 discharge gutters outer (by the technology controlling and process spoil disposal).During arts demand, can also be by valve control drain 5 with oxidation ditch emptying.
Embodiment 2: referring to Fig. 3,4, and such as embodiment 1, wherein settling region 12 and the wide setting of oxidation ditch, the bottom, settling region is unsettled, and reserve between bottom of trench and be circulated throughout circulation road 19, precipitate and separate mud can be crossed bottom web plate 20 and discharge in company with the cycling stream backflow, and valve control shore pipe 10 is arranged on the bottom, settling region.Precipitate and separate sludge reflux amount and sludge volume are distributed by the control of mud discharging mouth 10 valves according to processing requirement.
Embodiment 3: referring to Fig. 5, such as embodiment 2 (also can be such as example 1), the up-flow district, stream district falls, biochemical zone below (oxidation ditch middle and lower part) has dividing plate 21 to be separated into up and down two floor, aerating apparatus 8 is arranged on the bottom, upper strata, dividing plate 21 belows 22 are the oxygen-starved area, the mobile rear 23 for the treatment of solution is anaerobic zone, and 24 is the aerobic biochemical district.
To those skilled in the art, under this patent design and specific embodiment enlightenment, some distortion that can directly derive or associate from this patent disclosure and general knowledge, those of ordinary skills will recognize also can adopt additive method, or the substituting of known technology commonly used in the prior art, and the equivalence of feature changes or modification, mutual various combination between feature, for example change aeration up-flow zone position, biochemical reaction section length, can form A/O technique, increase the A that water-in can form multipoint water feeding
2/ O, A/O technique; the change of aerating apparatus in floating stuffing form, the water; oxidation ditch is pressed treatment process, sewage length changes; oxidation ditch shape changes; etc. unsubstantiality change, can be employed equally, can both realize this patent representation function and effect; launch for example no longer one by one to describe in detail, all belong to this patent protection domain.
Claims (5)
1. integrated oxidation ditch, comprise oxidation ditch pond body, the aerating apparatus of the end or middle and lower part, the built-in separation for the treatment of scheme end settling region, it is characterized in that in the body of oxidation ditch pond the suspension type filler being arranged, at least separating the settling region water-in has the filler barrier, separates the built-in horizontal herring-bone flap in settling region or broken pipe mud-water separation filler, and described horizontal herring-bone flap or broken pipe mud-water separation filler lower floor's flap or broken pipe length are the 1/3-1/5 on upper strata.
2. described integrated oxidation ditch according to claim 1 is characterized in that the suspension type filler adds the 15-30% that volume accounts for oxidation ditch.
3. described integrated oxidation ditch according to claim 1 is characterized in that between built-in separation settling region and oxidation ditch circulation channel being arranged.
4. described integrated oxidation ditch according to claim 1 is characterized in that the oxidation ditch middle and lower part has baffle for separating to become two layers up and down, and aerating apparatus is arranged on the bottom, upper strata.
5. according to claim 1,2,3 or 4 described integrated oxidation ditchs, it is characterized in that the suspension type filler is hollow colyliform short tube floating stuffing.
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| CN2011101023524A CN102134124B (en) | 2011-04-24 | 2011-04-24 | Integrated oxidation ditch |
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|---|---|---|---|
| CN2011101023524A CN102134124B (en) | 2011-04-24 | 2011-04-24 | Integrated oxidation ditch |
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| CN102134124A CN102134124A (en) | 2011-07-27 |
| CN102134124B true CN102134124B (en) | 2013-05-01 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583734B (en) * | 2012-01-16 | 2013-08-14 | 北京中环嘉诚环境工程有限公司 | Ecological combined pond |
| CN102583740B (en) * | 2012-02-27 | 2014-03-19 | 广东新大禹环境工程有限公司 | Tidal river surge water treatment device |
| CN102583892B (en) * | 2012-02-28 | 2013-07-03 | 居文钟 | Symmetrical opposite three-dimensional circular-flow integration oxidation ditch |
| CN103922474B (en) * | 2014-04-25 | 2015-11-11 | 环境保护部南京环境科学研究所 | A kind of folded plate type oxidation ditch and sewage water treatment method thereof |
| CN105293834B (en) * | 2015-11-25 | 2017-12-12 | 成都泰之源环保科技有限公司 | Integral type IODS reactors |
| CN108609807B (en) * | 2018-05-24 | 2022-01-04 | 中国市政工程华北设计研究总院有限公司 | Urban sewage treatment process taking anaerobic technology as core |
| CN108862559B (en) * | 2018-07-24 | 2021-03-23 | 哈尔滨工业大学 | Moving bed biofilm reaction device in micro-aerobic environment and method for treating coal gas wastewater by using moving bed biofilm reaction device |
| CN112875995A (en) * | 2021-01-28 | 2021-06-01 | 广州鹏锦环保科技有限公司 | Endogenous circulation ditch for treating wastewater based on activated sludge process |
| CN116022921A (en) * | 2022-12-29 | 2023-04-28 | 重庆大学 | Anaerobic reactor |
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