CN1219571C - Incorporated double settling zone tridimensional circulating oxidation ditch facility and method of operating thereof - Google Patents
Incorporated double settling zone tridimensional circulating oxidation ditch facility and method of operating thereof Download PDFInfo
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- CN1219571C CN1219571C CNB021208255A CN02120825A CN1219571C CN 1219571 C CN1219571 C CN 1219571C CN B021208255 A CNB021208255 A CN B021208255A CN 02120825 A CN02120825 A CN 02120825A CN 1219571 C CN1219571 C CN 1219571C
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- solid
- oxidation ditch
- liquid
- mixed solution
- liquid precipitate
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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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- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Activated Sludge Processes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention belongs to equipment using a biochemical technology for treating sewage, particularly relates to an integrated stereo circular oxidation channel sewage treating equipment with double settling zones. Two solid and liquid depositing separators are respectively arranged in a stereo circular oxidation channel which is partitioned into two parts by a partition plate, the upper part is used as an aerobic zone, and the lower part is used as an anoxic zone; the solid and liquid depositing separators are non-rectangular containers, a bottom mixed liquid inlet of each solid and liquid depositing separator is a diagonal opening, the upper part of one side wall is provided with an overflow weir and a water outlet, and the other side wall is provided with a return sludge flow opening; the two solid and liquid depositing separators are respectively arranged at the side walls of both ends of the stereo circular oxidation channel. The equipment of the present invention has the advantages of compact structure and simple configuration. As the base layer of the stereo circular oxidation channel is isolated with air, an air reoxygenation phenomenon of an anoxic section of the existing oxidation channel does not exist, which is favorable for forming an anoxic condition, and the denitrification efficiency is high. Compared with the existing oxidation ditch, the present invention reduces the occupation area by about 50%.
Description
Technical field
The invention belongs to the equipment that utilizes biochemical technology to dispose of sewage, particularly a kind of incorporated double settling zone tridimensional circulating oxidation ditch facility and working method thereof.
Background technology
Known a kind of oxidation ditch sewage disposal technology is the twentieth century exploitation fifties at present, mainly is made up of oxidation ditch, second pond and mud return-flow system, and it is a kind of form of activated sludge treatment method.The device that utilizes the oxidation ditch treatment technology at first is Paasche Wei Er (Pasveer) oxidation ditch device, see accompanying drawing 3, after this develop various multi-form oxidation ditch devices again, as Caro plug (Carrousel) oxidation ditch device, see accompanying drawing 4, and opel (Orbal) oxidation ditch device etc., see accompanying drawing 5.
The common feature of these oxidation ditch devices is: oxidation ditch is the plane enclosed irrigation canals and ditches that circulate, and uses a kind of aeration and agitator with direction control to promote mixed solution (sewage and active sludge are formed) along continuous straight runs and circulate continuously in the closed type channel; The residence time of sewage and microorganism is long, and the load of organic pollutant is low; Oxidation ditch can stably reach effective removal of organism and total suspended solid by the operation and maintenance of low limit.Settling tank and oxidation ditch branch are built, and by sludge pump precipitating sludge are back in the oxidation ditch.Its main drawback is that the depth of water is 1-3 rice usually because the ability of aerator is limit, and the degree of depth of oxidation ditch is more shallow, and floor space is big.Therefore, be restricted in land resources country use in short supply.
Later 1980s, the U.S. has developed another kind of known oxidation ditch sewage treatment---integrated oxidation ditch (Integral oxidation Ditch is called for short I.O.D), see accompanying drawing 6.It is that a kind of sewage aeration with conventional oxidation ditch device purifies and the precipitation of mixed solution/separates merge into a single whole (settling tank is set directly in the oxidation ditch raceway groove), flows with the no blowback of realization mud.The used method of this method and conventional oxidation ditch device is compared, and has saved the mud return-flow system.Its shortcoming is: second pond is built in the recirculation channel, has increased flow resistance, to the requirement raising of aerator.The operation adjusting function is poor.Because still circulation continuously in horizontal direction of mixed solution is subjected to the restriction of aeration ability in the reaction tank, the depth of water generally is no more than 3 meters, therefore, still has the excessive problem of floor space.
Summary of the invention
The object of the present invention is to provide on a kind of fluidised form mode completely newly, more save floor occupying area, further save integrated pair of settling region tridimensional circulating oxidation ditch sewage disposal device of energy consumption.
Another object of the present invention provides the working method of the two settling regions of a kind of application continuum tridimensional circulating oxidation ditch sewage disposal device.
Equipment of the present invention comprises oxidation ditch and solid-liquid precipitate and separate device, has water-in on oxidation ditch top, in the place ahead of water-in aeration rotary brush is installed, and it is characterized in that:
Described oxidation ditch is the tridimensional circulation type oxidation ditch, and it is by dividing plate oxidation ditch to be divided into two portions up and down, and top is aerobic zone, and the bottom is the oxygen-starved area;
Described solid-liquid precipitate and separate device is non-rectangular vessel, its bottom mixed solution admission port is diagonal cut joint, be provided with overflow weir and water outlet on the top of a sidewall, on another sidewall, and the certain altitude place has the mud refluxing opening in the middle part of approximately being positioned at tridimensional circulating oxidation ditch;
In the tridimensional circulation type oxidation ditch, be separately installed with two solid-liquid precipitate and separate devices;
Described two solid-liquid precipitate and separate devices are to be installed in respectively on the two ends sidewall of tridimensional circulating oxidation ditch, and the water outlet of solid-liquid precipitate and separate device is on the top of tridimensional circulating oxidation ditch, and the mud refluxing opening approximately is positioned at certain altitude place, tridimensional circulating oxidation ditch middle part.
Described solid-liquid precipitate and separate device is installed in the two ends of tridimensional circulating oxidation ditch respectively, is meant on the relative rear and front end sidewall of the aeration rotary brush of tridimensional circulating oxidation ditch.
Described dividing plate is mounted between the inner side-wall of two solid-liquid precipitate and separate devices, and the two ends of dividing plate respectively and leave between the inner side-wall of two solid-liquid precipitate and separate devices and make the unimpeded round-robin raceway groove of water, or dividing plate respectively with airtight connection of inner side-wall of two solid-liquid precipitate and separate devices, have at the dividing plate two ends and to make the unimpeded round-robin of water hole.
The mud refluxing opening of described solid-liquid precipitate and separate device is provided in a side of on the sidewall on overflow weir and water outlet opposite, and the mud refluxing opening of one of them solid-liquid precipitate and separate device is opened below dividing plate and is no more than 1 meter; The mud refluxing opening of another solid-liquid precipitate and separate device is opened more than dividing plate and is no more than 1 meter.
Two solid-liquid precipitate and separate devices of the present invention suitably highly locate to have the mud refluxing opening in the middle part of being positioned at tridimensional circulating oxidation ditch, by mixed solution in the oxidation ditch to hydrodynamic characteristic dirty or that produce when circulating, make mud be back in the oxidation ditch automatically, mud reflux type uniqueness, mud-water separation is effective, realizes the non-power consumption that mud refluxes.Two solid-liquid separators have corresponding different installation site according to mud backflow different modes as follows: one of solid-liquid separator, be installed on rear one end with aeration rotary brush, the mixed solution import is positioned at three-dimensional oxidation ditch bottom, mixed solution only enters separator from here, after finishing mud-water separation, mud is positioned at the structure that tridimensional circulating oxidation ditch middle part has the mud refluxing opening from sidewall and upwards is back to oxidation ditch automatically; Two of solid-liquid separator, be installed on the place ahead one end with aeration rotary brush, the mixed solution import is positioned at three-dimensional oxidation ditch bottom, mixed solution only enters separator from here, after finishing mud-water separation, mud is positioned at the structure that the tridimensional circulating oxidation ditch bottom has the mud refluxing opening from sidewall and is back to oxidation ditch downwards automatically.
Two solid-liquid precipitate and separate devices of the present invention all are bevelled non-rectangle containers, can make full use of the dead-space volume in the three-dimensional oxidation ditch, thereby further improve the hydraulic load of mud-water separation effect and system.
The working method of integrated pair of settling region of the present invention tridimensional circulating oxidation ditch sewage disposal device is: city domestic sewage or some trade effluent at first enter the tridimensional circulating oxidation ditch that microbial population (active sludge) is housed by water-in, make sewage and the microbial population thorough mixing that is stirred by the aeration rotary brush device, top at tridimensional circulating oxidation ditch, mixed solution has been oxygen condition, effectively degradation of organic substances and ammonia nitrogen is oxidized to nitric nitrogen (nitrate nitrogen and nitrite nitrogen); Then, the bottom that raceway groove or the hole of mixed solution by side flows into tridimensional circulating oxidation ditch downwards, in this district, mixed solution is anoxic condition, under the effect of denitrifying bacteria is nitrogen and removing from water with nitrate-nitrogen reduction; Denitrification is a carbon source with the organism, as COD, therefore can simultaneously partial organic substances be removed.
Partially mixed liquid enters the solid-liquid precipitate and separate device from the mixed solution admission port of two solid-liquid precipitate and separate device bottoms respectively; The settling region (zone between mixed solution admission port and the mud refluxing opening) of flowing through carries out solid-liquid separation.
Mixed solution is discharged by the water outlet of both sides equal altitudes through overflow weir with the supernatant liquor of water inlet equivalent after solid-liquid separation, and mud is back in the stereoscopic circulation integrated oxidation ditch by the mud refluxing opening then by hydromechanical effect.Mixed solution is in the process that kinetic energy and potential energy are changed mutually, and the top that upwards flows into stereoscopic circulation integrated oxidation ditch, raceway groove or the hole by another side is solid like this and circulates between the upper and lower of stereoscopic circulation integrated oxidation ditch again.So move in circles, sewage is purified.
Equipment of the present invention and working method thereof have following advantage:
1. the system architecture compactness is constructed succinctly, and operation is very simple with maintenance, and manual request is few, easily is automated control.
2. mixed solution circulates up and down in the tridimensional circulation type oxidation ditch, thereby can effectively improve the oxidation ditch depth of water, compares floor space with existing oxidation ditch and can reduce about 50%.
3. the tridimensional circulation type oxidation ditch can be finished organic removal and biological denitrificaion synchronously.On top, mixed solution has been an oxygen condition, effectively degradation of organic substances and ammonia nitrogen is oxidized to nitric nitrogen (nitrate nitrogen and nitrite nitrogen).Being anoxic condition at bottom, under the effect of denitrifying bacteria is nitrogen and removing from water with nitrate-nitrogen reduction.Denitrification is carbon source with the organism, therefore can simultaneously partial organic substances be removed.Because bottom of this tridimensional circulating oxidation ditch and air are isolated, there is not the air reoxygenation phenomenon of existing oxidation ditch anoxic section, help forming anoxic condition, denitrification efficient height.Compare with existing oxidation ditch, useful volume can reduce about 30%.
4. solid-liquid precipitate and separate device is installed in the two ends of ditch among the present invention, and the mixed solution of ditch internal recycle is flowed without any influence.The mud refluxing opening suitably highly is being set separately, make mud be back in the oxidation ditch automatically by the hydrodynamic characteristic that when flowing or circulating, produces under the mixed solution in the oxidation ditch, mud reflux type uniqueness, mud-water separation is effective, realizes the non-power consumption that mud refluxes.
Description of drawings
Fig. 1. the synoptic diagram of the integrated tridimensional circulating oxidation ditch equipment of the present invention;
Fig. 2. solid-liquid precipitate and separate device structural representation of the present invention.
A. floor map; B. schematic perspective view.
Fig. 3. Paasche Wei Er (Pasveer) ditch synoptic diagram.
Fig. 4. Caro plug (Carrousel) oxidation ditch synoptic diagram.
Fig. 5. opel (Orbal) oxidation ditch synoptic diagram.
Fig. 6. existing integrated oxidation ditch (Integral oxidation Ditch is called for short I.O.D) synoptic diagram.
Reference numeral:
1. water-in 2. aeration rotary brushs 4. overflow weirs
5. water outlet 6. solid-liquid precipitate and separate devices 7. mud refluxing openings
8. mixed solution admission port 9. dividing plates 10. raceway grooves
11. second pond 12. partition walls 13. headers 14. suspended sludge layers
15. tridimensional circulating oxidation ditch 16. oxidation ditch upper strata aerobic zones
17. oxidation ditch bottom oxygen-starved area 18. mixed solutions, 19. returned sluges
20. oxidation ditch 21. mixture exports
Embodiment
Embodiment 1:
One stereoscopic circulation integrated oxidation ditch is divided into up and down two portions by dividing plate with oxidation ditch, and both sides leave raceway groove, and top is aerobic zone, and the bottom is the oxygen-starved area; On a sidewall on tridimensional circulating oxidation ditch top, have water-in, the aeration rotary brush of driven by motor is installed in the place ahead of water-in; On the sidewall of the two ends of tridimensional circulating oxidation ditch, be separately installed with solid-liquid precipitate and separate device, by a swash plate mixed solution admission port of solid-liquid precipitate and separate device is blocked into the opening of inclination, sidewall at an upper portion thereof is provided with overflow weir and water outlet, on another sidewall, and be positioned at tridimensional circulating oxidation ditch bottom place and have the mud refluxing opening.
To contain COD is 110～440mg/l, ammonia nitrogen is 55mg/l, SS is that the sewage of 130～500mg/l is pumped into by water-in the tridimensional circulation type oxidation ditch of taking from municipal sewage plant's returned sluge is housed, in the whole service process, the interior activated sludge concentration of stereoscopic circulation integrated oxidation ditch that maintenance has two settling tanks is 2000～4000mg/l, water temperature is 5～30 ℃, and pH is 6～9.
Make sewage and microbial population (active sludge) thorough mixing that is stirred by the aeration rotary brush device, in this district, mixed solution has been oxygen condition, organism is degraded effectively, nitration reaction takes place and is converted into nitric nitrogen in ammonia nitrogen in the raceway groove of top, change into nitrogen and from water, overflow at the bottom nitric nitrogen, finished biological denitrification process.Partially mixed liquid enters the solid-liquid precipitate and separate device from the mixed solution admission port of two solid-liquid precipitate and separate device bottoms respectively; Mixed solution carries out solid-liquid separation through the mixed solution admission port of solid-liquid precipitate and separate device and the settling region between the mud refluxing opening;
Mixed solution is discharged by water outlet through overflow weir with the supernatant liquor of water inlet equivalent after solid-liquid separation, and mud is back in the stereoscopic circulation integrated oxidation ditch by the mud refluxing opening then by hydromechanical effect.Mixed solution upwards flows into the top of stereoscopic circulation integrated oxidation ditch again by the raceway groove of another side in the process that kinetic energy and potential energy are changed mutually, be solid like this between the upper and lower of stereoscopic circulation integrated oxidation ditch and circulate.So move in circles, sewage is purified.
COD is 30～50mg/l in the water outlet, and ammonia nitrogen is 0～2mg/l, and SS is 13～50mg/l, has reached national miscellaneous domestic water quality standard.
Claims (5)
1. an incorporated double settling zone tridimensional circulating oxidation ditch facility comprises oxidation ditch and solid-liquid precipitate and separate device, has water-in on oxidation ditch top, in the place ahead of water-in aeration rotary brush is installed, and it is characterized in that:
Described oxidation ditch is the tridimensional circulation type oxidation ditch, and it is by dividing plate oxidation ditch to be divided into two portions up and down, and top is aerobic zone, and the bottom is the oxygen-starved area, and in the aerobic zone of oxidation ditch microbial population is housed;
Described dividing plate is mounted between the inner side-wall of two solid-liquid precipitate and separate devices, and the two ends of dividing plate respectively and leave between the inner side-wall of two solid-liquid precipitate and separate devices and make the unimpeded round-robin raceway groove of water, or dividing plate respectively with airtight connection of inner side-wall of two solid-liquid precipitate and separate devices, have at the dividing plate two ends and to make the unimpeded round-robin of water hole;
Described solid-liquid precipitate and separate device is non-rectangular vessel, and its bottom mixed solution admission port is diagonal cut joint, is provided with overflow weir and water outlet on the top of a sidewall, has the mud refluxing opening on another sidewall;
In the tridimensional circulation type oxidation ditch, be separately installed with two solid-liquid precipitate and separate devices;
Described two solid-liquid precipitate and separate devices are to be installed in respectively on the two ends sidewall of tridimensional circulating oxidation ditch;
Described settling region is in solid-liquid separator and be zone between mixed solution admission port and the mud refluxing opening.
2. equipment as claimed in claim 1 is characterized in that: described solid-liquid precipitate and separate device is installed in respectively on the two ends sidewall of tridimensional circulating oxidation ditch, is meant on the relative rear and front end sidewall of the aeration rotary brush of tridimensional circulating oxidation ditch.
3. equipment as claimed in claim 1 is characterized in that: the mud refluxing opening of described solid-liquid precipitate and separate device is provided in a side of on the sidewall on overflow weir and water outlet opposite.
4. as claim 1 or 3 described equipment, it is characterized in that: the mud refluxing opening of described solid-liquid precipitate and separate device, the mud refluxing opening of one of them solid-liquid precipitate and separate device are opened below dividing plate and are no more than 1 meter; The mud refluxing opening of another solid-liquid precipitate and separate device is opened more than dividing plate and is no more than 1 meter.
5. working method as any described equipment of claim 1-4, it is characterized in that: sewage is entered the stereoscopic circulation integrated oxidation ditch top with two settling regions that microbial population is housed by water-in, make sewage and the microbial population thorough mixing that is stirred by the aeration rotary brush device, make mixed solution be oxygen condition; Then, the bottom that raceway groove or the hole of mixed solution by side flows into stereoscopic circulation integrated oxidation ditch downwards makes mixed solution be anoxic condition, under the effect of denitrifying bacteria is nitrogen and removing from water with nitrate-nitrogen reduction; Denitrification is carbon source with the organism;
Partially mixed liquid enters the solid-liquid precipitate and separate device from the mixed solution admission port of two solid-liquid precipitate and separate device bottoms respectively; Carry out solid-liquid separation through the settling region;
Mixed solution is after solid-liquid separation, discharge by water outlet through overflow weir with the supernatant liquor of water inlet equivalent, mud then is back in the tridimensional circulating oxidation ditch by the mud refluxing opening, mixed solution is the top that upwards flows into tridimensional circulating oxidation ditch, raceway groove or the hole by another side again, is solid like this between the upper and lower of tridimensional circulating oxidation ditch and circulates;
Described settling region is in solid-liquid separator and be zone between mixed solution admission port and the mud refluxing opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021208255A CN1219571C (en) | 2002-06-04 | 2002-06-04 | Incorporated double settling zone tridimensional circulating oxidation ditch facility and method of operating thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021208255A CN1219571C (en) | 2002-06-04 | 2002-06-04 | Incorporated double settling zone tridimensional circulating oxidation ditch facility and method of operating thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1463933A CN1463933A (en) | 2003-12-31 |
| CN1219571C true CN1219571C (en) | 2005-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021208255A Expired - Fee Related CN1219571C (en) | 2002-06-04 | 2002-06-04 | Incorporated double settling zone tridimensional circulating oxidation ditch facility and method of operating thereof |
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| CN (1) | CN1219571C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100594594B1 (en) * | 2004-06-02 | 2006-06-30 | 한상배 | Packaged Water Treatment Equipments with using Intraclarifier Reactor |
| CN1303009C (en) * | 2004-09-30 | 2007-03-07 | 中国科学院生态环境研究中心 | Cleaning type integrated effluent disposal system and operation method |
| CN101423288B (en) * | 2007-10-29 | 2010-07-21 | 中国科学院生态环境研究中心 | Lateral precipitation and stereoscopic circulation integrated oxidation ditch equipment and operation method |
| CN101531439B (en) * | 2009-04-27 | 2012-07-11 | 江苏金山环保工程集团有限公司 | Integrative three-bent tridimensional cyclic oxidation ditch |
| CN102491519B (en) * | 2011-12-26 | 2013-06-19 | 重庆大学 | Water pollution control method for landscape |
| CN110204046A (en) * | 2019-07-06 | 2019-09-06 | 凌志环保股份有限公司 | The upper vertical ring type tubular type oxidation ditch tank that flows down |
| CN110541454A (en) * | 2019-09-20 | 2019-12-06 | 常州通用自来水有限公司 | secondary water supply tank easy to disinfect and guarantee water quality and control method thereof |
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2002
- 2002-06-04 CN CNB021208255A patent/CN1219571C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1463933A (en) | 2003-12-31 |
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