CN103979670B - Tower biological sewage treatment device - Google Patents
Tower biological sewage treatment device Download PDFInfo
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- CN103979670B CN103979670B CN201310049813.5A CN201310049813A CN103979670B CN 103979670 B CN103979670 B CN 103979670B CN 201310049813 A CN201310049813 A CN 201310049813A CN 103979670 B CN103979670 B CN 103979670B
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- 239000010865 sewage Substances 0.000 title claims abstract description 76
- 239000011259 mixed solution Substances 0.000 claims abstract description 137
- 239000007788 liquid Substances 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 239000006228 supernatant Substances 0.000 claims abstract description 26
- 238000010170 biological method Methods 0.000 claims abstract description 12
- 239000002351 wastewater Substances 0.000 claims abstract description 12
- 239000010802 sludge Substances 0.000 claims description 46
- 238000000926 separation method Methods 0.000 claims description 33
- 239000000284 extract Substances 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 29
- 239000012530 fluid Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000007667 floating Methods 0.000 abstract description 20
- 239000007789 gas Substances 0.000 description 112
- 238000005273 aeration Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000005276 aerator Methods 0.000 description 11
- 238000010992 reflux Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 230000029087 digestion Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Activated Sludge Processes (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention relates to the biological method for treating waste water of a kind of tower biological sewage treatment device and this device of application.Described tower biological sewage treatment device comprises settling chamber and uses the mixture of airstream and strength liquid lift technique of concentrated mixed solution in settling chamber described in gas lift.Tower biological sewage treatment device of the present invention and method fast and effeciently can control the interface location in settling chamber between supernatant liquor and concentrated mixed solution, prevent or eliminate the Mud up-floating in settling chamber.
Description
Technical field
The present invention relates to a kind of tower biological sewage treatment device, particularly a kind of tower waste disposal plant comprising settling chamber and use the mixture of airstream and strength liquid lift technique concentrating mixed solution in settling chamber described in gas lift.
Background technology
Usually in biological sewage treatment device, mixed solution after the aerobic treatment such as such as Air Exposure needs in settling chamber, carry out mud-water separation and obtains supernatant liquor (or being called " water outlet ") and concentrated mixed solution (or being called " mud "), and at least part of needs backflow of described concentrated mixed solution returns solarization air cell's (or being called " sludge reflux ") and mixes with sewage charging (or being called " water inlet ").Sludge reflux utilizes sludge reflux pump (being generally impeller pump) usually.But sludge reflux pump needs to consume extra energy, and need often to safeguard.In addition, also insulation processing is needed in case danger of hazardous electrical discharges with electrically driven (operated) sludge reflux pump.Therefore, sludge reflux pump is arranged on specific position usually, limits the handiness of processing set-up, and often needs a large amount of connecting pipeline, adds facility investment, the reliability of the whole device of reduction.These problems are particularly outstanding in the tower biological sewage treatment device that occupation of land is less and highly larger.
Chinese patent application CN102372379A discloses a kind of tower biological sewage treatment device, comprise flow lifting type sludge bed reactor, aerobic reactor above flow lifting type sludge bed reactor and the separator on aerobic reactor top, described separator has gas-liquid separation cylinder and solid-liquid displacement zone, aerating gas from aerobic reactor enters gas-liquid separation cylinder together with aeration mixed solution, then the mixed solution be separated enters solid-liquid displacement zone and is separated into supernatant liquor and concentrated mixed solution, concentrated mixed solution return aerobic reactor mix with sewage charging after aeration form aeration mixed solution.
But at separation aerating gas with during mixed solution or when being separated mixed solution and forming supernatant liquor and concentrated mixed solution, in prior art, tripping device and method are often difficult to the separating effect obtaining expecting.Particularly in the tower biological sewage treatment device of volume and limited height, in settling chamber water outlet and mud be separated especially difficulty, when being separated insufficient, even may there is Mud up-floating phenomenon, process is interrupted.
In addition, in biological sewage treatment, the energy consumption equipment that Aeration fan is normally main, but aerating gas is usually directly discharged in air after completing Air Exposure, therefore the energy in aerating gas is also underutilized, and the energy consumption of biological sewage treatment device is higher.
Therefore, new, less energy-consumption, high reliability and high efficiency tower biological sewage treatment device and method is still needed.
Summary of the invention
An object of the present invention is to provide a kind of tower biological sewage treatment device to solve technical problem of the prior art.For this reason, one aspect of the present invention provides a kind of tower biological sewage treatment device, comprises settling chamber and uses the mixture of airstream and strength liquid lift technique concentrating mixed solution in settling chamber described in gas lift.
According to certain embodiments of the present invention, described settling chamber can be that any Air Exposure mixed solution that can make is separated the device forming supernatant liquor and concentrated mixed solution.Usually, settling chamber can be settling bath or settling tank, wherein can arrange swash plate or inclined tube to strengthen separating effect.Concentrated mixed solution is formed at the bottom of settling bath or settling tank usually under precipitating action, wherein can be provided with mud-collecting slot to strengthen the effect of settling of concentrated mixed solution.In some cases, overflow groove is provided with on the top of settling chamber to discharge supernatant liquor as water outlet.
According to certain embodiments of the present invention, in described tower biological sewage treatment device, described the mixture of airstream and strength liquid lift technique be any appropriate can utilize gas as power to promote the equipment of mixed solution, the mixture of airstream and strength liquid lift technique that preferred permission gas contacts with mixed solution, such as air-powered pump or the mixture of airstream and strength liquid riser tube.In some cases, the mixture of airstream and strength liquid riser tube comprise substantially vertical for drawing the extract pipe of described concentrated mixed solution and the airway for described gas being imported described extract pipe with described extract fluid communication.
According to certain embodiments of the present invention, in described tower biological sewage treatment device, described extract pipe has for drawing the entrance of described concentrated mixed solution and the outlet for discharging described gas and concentrated mixed solution, and described airway is connected to middle part or the bottom of described extract pipe.When described gas enters extract Guan Zhonghou through airway, the concentrated mixed solution that described gas enters with the entrance from extract pipe bottom mixes, under the pressure and Float upward function of gas, gas and concentrated mixed solution form gas-liquid mixture in the catheter and upwards flow, discharge from the outlet at extract pipe top, thus utilize and air conveyingly improve concentrated mixed solution.In some cases, by utilizing the concentrated mixed solution in gas lift settling chamber to achieve sludge circulation in whole waste disposal plant.
In some embodiments, described airway with suitable gas fluid communication, and can enter the gas flow of airway with control by flowrate control valve, thus controls the flow promoting concentrated mixed solution.In other embodiments, the upstream of described extract tube inlet arranges flowrate control valve to control to enter the flow of the concentrated mixed solution of conduit.
In some cases, described gas can from any available gas source, and such as described gas can come from the storage tank of the gas such as air compressor, blower fan, such as air, oxygen, nitrogen, rare gas element.The pressure of preferred described gas is more than or equal to normal atmosphere.Preferred described gas is oxygen-containing gas.In some cases, at least part of described gas is from aerating gas.Aerating gas can collect any position of the aerating apparatus from such as solarization air cell.Preferably, aerating gas is the aerating gas of overflowing from mixed solution collected above aerating apparatus.Oxygen in usual aerating gas can not all consume in Air Exposure, and the aerating gas therefore after Air Exposure is still containing aerobic.In some cases, extra sludge reflux pump also can be set to promote the concentrated mixed solution in settling chamber.In some cases, described gas also can be utilized to drive extra sludge reflux pump.
According to certain embodiments of the present invention, in described tower biological sewage treatment device, the bottom of described settling chamber is provided with mud-collecting slot, and the entrance of described extract pipe stretches into described mud-collecting slot.
In some cases, one or more the mixture of airstream and strength liquid riser tube can be set in described settling chamber.In some cases, the extract tube inlet of multiple the mixture of airstream and strength liquid riser tube can stretch into one or more mud-collecting slot.Multiple the mixture of airstream and strength liquid riser tube is set and can strengthens the air conveying effect of gas to concentrated mixed solution, improve the efficiency promoting concentrated mixed solution, also can strengthen the contact between gas and concentrated mixed solution simultaneously.
According to certain embodiments of the present invention, also comprise for separating of from the described concentrated mixed solution of the mixture of airstream and strength liquid lifting gear and the gas-liquid separation groove of gas at described tower biological sewage treatment device.
According to certain embodiments of the present invention, in described tower biological sewage treatment device, described gas-liquid separation groove is communicated with the outlet fluid of described extract pipe.
According to certain embodiments of the present invention, also comprise solarization air cell at described tower biological sewage treatment device, described solarization air cell has the gas skirt for collecting aerating gas in solarization air cell, and at least part of described gas is the aerating gas from described gas skirt.According to certain embodiments of the present invention, solarization air cell can be any device that can carry out mixed solution Air Exposure, such as aeration tank or aerator tank.Can arrange aerator in solarization air cell with enhanced aeration process, described aerator can be such as spiral aerator, micro-hole aerator, board-like aerator, revolve mixed aerator, tube aerator, jetting type aerator etc.
In some cases, at least part of in solarization air cell, preferably all aerating gas introduces described concentrated mixed-liquor return equipment after collecting.In some cases, gas-liquid separation device is set in solarization air cell to be separated with Air Exposure mixed solution by aerating gas.Described gas-liquid separation device can be any device that can realize aerating gas and be separated with Air Exposure mixed solution.Air Exposure mixed solution after separation can introduce settling chamber, and prevents aerating gas from entering settling chamber.Such as, described gas-liquid separation device can be one or more container or one or more snippets pipe, its top is provided with the one or more openings allowing Air Exposure mixed solution to enter described container or pipe, and is provided with the pipeline be communicated with settling chamber's fluid bottom it and enters settling chamber to allow the Air Exposure mixed solution in described container or pipe.In some cases, the described opening of described container or pipe submerge solarization air cell mixed solution in receive Air Exposure mixed solution and to prevent aerating gas from entering settling chamber.
In some embodiments, gas extractor is set in solarization air cell to collect aerating gas.Described airway is communicated with gas extractor fluid.Described gas extractor can comprise the gas skirt be arranged on above aerating apparatus.According to certain embodiments of the present invention, described gas skirt and described air guide fluid communication.Such as, be provided with airway at the top of gas skirt and enter the mixture of airstream and strength liquid lifting gear with the gas from gas entrance allowing gas skirt and collect.In some embodiments, described airway is provided with flowrate control valve to control to enter the flow of the gas of described conduit, thus controls the flow of concentrated mixed solution.In some cases, gas skirt can also be provided with blow-down pipe with at least part of discharge of the gas collected by gas skirt.Described blow-down pipe can also arrange control valve with the flow of control discharge gas or ratio, and then control enters the flow of the gas of described conduit to control the flow of concentrated mixed solution.
In some cases, gas skirt can be arranged on middle part or the top of solarization air cell.The part of gas skirt upwards can extend the top wall of protrusion solarization air cell to form gas collection bag.The wall of at least part of gas skirt can be the wall limiting solarization air cell.In some cases, gas skirt can be the independently umbrella hood being positioned at solarization air cell inside.In other cases, gas skirt is limited by the top of solarization air cell and the optional sidewall connected with top.
According to certain embodiments of the present invention, in described tower biological sewage treatment device, described solarization air cell also has the intercepting basin for collecting mixed solution in solarization air cell, described settling chamber and described liquid collecting fluid communication, and concentrated mixed solution at least part of described settling chamber is from the mixed solution of described intercepting basin.
According to certain embodiments of the present invention, described tower biological sewage treatment device also comprises the dividing plate be arranged between described solarization air cell and described settling chamber.Described dividing plate can be dull and stereotyped or conical plate or back taper plate or flap or any other suitable sketch plate.The drift angle of conical plate or back taper plate can be about 60 degree to about 179 degree, such as about 70 to about 150 degree, about 80 to about 120 degree, about 85 to about 105 degree or about 90 degree.Adopt less drift angle can increase the height of settling chamber, be conducive to mixed solution and be separated formation supernatant liquor and concentrated mixed solution; And larger drift angle is conducive to layout and the installation of each equipment in solarization air cell and settling chamber.In some cases, described drift angle is about 60 degree, about 70 degree, about 80 degree, about 90 degree, about 100 degree, about 120 degree etc.
According to some embodiments of tower biological sewage treatment device of the present invention, described gas skirt is one or more gas skirts that one or more parts of described dividing plate project upwards formation.According to some embodiments of tower biological sewage treatment device of the present invention, described gas skirt be positioned at described separator edge project upwards by one or more parts of described dividing plate the one or more gas skirts formed, or the ring groove limited by described back taper separator edge part and described solarization air cell inwall.
According to some embodiments of tower biological sewage treatment device of the present invention, described intercepting basin is positioned at the middle part of described dividing plate.In some cases, the opening upwards of described intercepting basin also and between the lower surface of described dividing plate leaves the gap allowing mixed solution to enter intercepting basin.Be furnished with like this and be beneficial to being separated of aerating gas and mixed solution.
According to certain embodiments of the present invention, in described tower biological sewage treatment device, the top of described intercepting basin is limited by the described dividing plate of part, and this part of described dividing plate is provided with the through hole allowing mixed solution to be entered settling chamber by intercepting basin.In some cases, described through hole is through arranging to prevent aerating gas from entering settling chamber by this through hole.Such as, described through hole is blocked in case aerating gas enters settling chamber by this through hole with described intercepting basin.
According to some embodiments of tower biological sewage treatment device of the present invention, the groove bottom the described settling chamber of outstanding formation downwards, middle part of described dividing plate is as mud-collecting slot.Like this, the concentrated mixed solution being separated formation in settling chamber will be concentrated to described groove under gravity.The entrance of preferred described extract pipe stretches into described groove.
According to some embodiments of tower biological sewage treatment device of the present invention, the bottom of described settling chamber is also provided with mixed solution sparger the mixed solution from described intercepting basin to be evenly distributed on the bottom of described settling chamber.According to some embodiments of tower biological sewage treatment device of the present invention, described mixed solution sparger is the ring pipe that the basic horizontal with multiple opening is placed, or the ring groove that the shirt rim extended obliquely be connected with described gas-liquid separation groove outer wall and described gas-liquid separation groove outer wall limit.Mixed solution from intercepting basin can be evenly distributed in settling chamber by such mixed solution sparger does not affect the process that mixed solution is separated formation supernatant liquor and concentrated mixed solution substantially.
According to some embodiments of tower biological sewage treatment device of the present invention, described gas-liquid separation groove limited by described extract pipe with the outer sleeve of described extract pipe essentially concentric.In some cases, the described bottom of gas-liquid separation groove is communicated with the lower flow of solarization air cell to make the concentrated mixed-liquor return in groove enter the bottom of solarization air cell.In other embodiments, described gas-liquid separation groove is independently groove or pipe, its top is communicated with the concentrated mixed solution that allows to leave described extract pipe with the upward flow of described extract pipe and aerating gas enters, and its underpart is communicated with the lower flow of solarization air cell to make the concentrated mixed-liquor return in groove enter the bottom of solarization air cell.
According to certain embodiments of the present invention, in described tower biological sewage treatment device, between described gas-liquid separation groove and described solarization air cell, be provided with the concentrated mixed-liquor return pipe allowing the concentrated mixed solution of described gas-liquid separation groove to enter described solarization air cell.
According to certain embodiments of the present invention, the anaerobic reaction room be arranged on below described solarization air cell is also comprised at described tower biological sewage treatment device.
In the present invention, described anaerobic reaction room can be any device that concentrated mixed solution and the rear mixed solution formed of sewage charging mixing can be made to stand anaerobic treatment.According to certain embodiments of the present invention, described anaerobic reaction room can be any device that sewage charging can be made to stand anaerobic treatment.In some cases, anaerobic treatment can by making the mode of mixed solution sluggish flow realize when not having aeration.Suitable anaerobic reaction room can be the pond or groove that allow mixed solution to flow in modes such as flat flow, vertical-flow or radial-flows.Such as, described anaerobic reaction room can be upflow anaerobic sludge blanket process (upflowanaerobicsludgeblanket, UASB) reactor, comprise in the mixing zone of bottom, at top for collecting the plenum zone of methane bubble and the anaerobic reaction district between mixing zone and plenum zone.
According to some embodiments of tower biological sewage treatment device of the present invention, the bottom of described settling chamber is also provided with the second concentrated mixed-liquor return pipe so that the concentrated at least partly mixed solution in settling chamber is discharged settling chamber and solarization air cell.In some cases, available pump forces to discharge the concentrated mixed solution in settling chamber.In some cases, the concentrated mixed solution of discharging is introduced in the anaerobic reaction room be arranged on below solarization air cell, the bottom of preferred anaerobic reaction room.Supernatant liquor in settling chamber and the interface location between concentrated mixed solution higher time or be about to or form sludge bulking generation Mud up-floating time, partly or entirely will concentrate mixed solution to discharge and fast and effeciently can reduce interface location, and prevent from or eliminate sludge bulking being formed and Mud up-floating.
According to some embodiments of tower biological sewage treatment device of the present invention, in described settling chamber, be also provided with sludge bulking shredder assembly.Described sludge bulking shredder assembly is the device that the sludge bulking in settling chamber can be broken into the mud granule being easy to sedimentation of any appropriate.In some cases, described sludge bulking shredder assembly is the device utilizing the broken sludge bulking of mechanical force, such as strength sludge bulking shredder assembly, the aerator of such as any appropriate, or the gas distribution tube with upward opening.In some cases, described sludge bulking shredder assembly is connected to described settling chamber actively, can enter and leave described settling chamber as required.In the During Process of Long-term Operation of biological sewage treatment device, the a small amount of mud entering settling chamber may suspend always and fail to be settled down to the bottom of settling chamber, these mud may be reunited formation sludge bulking, easy floating may be become gradually under the anaerobic environment of settling chamber, thus may discharge with water outlet and destroy effluent quality.According to some embodiments of tower biological sewage treatment device of the present invention, described strength sludge bulking shredder assembly can be the aerating apparatus being arranged on any suitable location in described settling chamber, is preferably arranged on the middle part of described settling chamber.Intermittent Air Exposure is carried out to these sludge bulkings, can broken sludge bulking, improve its settling property, avoid it to the destruction of effluent quality.
According to certain embodiments of the present invention, also comprise power house and interchanger at described tower biological sewage treatment device, the heat that wherein said interchanger utilizes power house medium power equipment to discharge heats the mixed solution in described biological sewage treatment device.It is indoor that described power house and interchanger are preferably arranged on described solarization air cell and/or described anaerobic reaction, and the heat that wherein said interchanger utilizes power house medium power equipment discharge heats the mixed solution in anaerobic reaction room or solarization air cell or settling chamber.Described interchanger is the interchanger of any appropriate, such as, can be selected from coil heat exchanger, straight pipe heat exchanger or its combination.Described power-equipment can be any power-equipment for tower biological sewage treatment device, the vacuum pump of such as blower fan, sewage fresh feed pump or vacuum water drawing device and related control device etc.The benefit of such setting is at least to reduce noise, is convenient to arrange and install, and the place that is populous, narrow space such as to be beneficial in community and to dispose.
According to some embodiments of biological sewage treatment device of the present invention, described settling chamber and solarization air cell and/or anaerobic reaction room can be arranged in the same cylindrical shell in tower layout.Described cylindrical shell can be circular cylinder body or Polygonal barrel (preferably four, five, six, seven, eight or more limit cylindrical shell).
In this article, " downwards " refers to and gravity direction direction substantially in the same way, includes but not limited to the direction overlapped with gravity direction; " upwards " refer to and the opposite direction of gravity direction direction substantially in the same way, include but not limited to and the direction that the opposite direction of gravity direction overlaps.
In this article, " substantially " or " substantially " refers to and can be changed in the proper range determined for benchmark with the central value of this term by its term modified, and such as this scope can by central value ± 20%, preferably ± 10%, more preferably ± 5%, the determined scope such as more preferably ± 1%.
Another aspect of the present invention provides a kind of biological method for treating waste water, comprises the concentrated mixed solution used in gas lift settling chamber.According to biological method for treating waste water of the present invention, wherein at least part of described gas is from aerating gas.
According to biological method for treating waste water of the present invention, further comprising the steps of: to collect the mixed solution in solarization air cell and aerating gas respectively, mixed solution is carried out in described settling chamber precipitation process to obtain supernatant liquor and concentrated mixed solution, in the mixture of airstream and strength liquid lift technique, mixed solution will be concentrated with aerating gas promote.
According to biological method for treating waste water of the present invention, be also included in gas-liquid separation groove and the aerating gas from the mixture of airstream and strength liquid lift technique is separated with concentrated mixed solution, and the concentrated mixed solution be separated at least partly is sent into solarization air cell.
According to biological method for treating waste water of the present invention, also comprise: regularly or when being about to or form sludge bulking in supernatant liquor in settling chamber Air Exposure is carried out to the supernatant liquor in settling chamber.Carry out opportunity of this Air Exposure and time length to determine arbitrarily, as long as can avoid or eliminate sludge bulking to avoid Mud up-floating according to the formational situation of sludge bulking or broken situation or Mud up-floating situation.Usually, when carrying out this Air Exposure, sewage charging should be stopped to enter water outlet to avoid mud.
According to biological method for treating waste water of the present invention, also comprise and the concentrated mixed solution at least part of settling chamber is discharged and do not sent into solarization air cell, such as, this concentrated mixed solution can be sent into anaerobic reaction room.Described concentrated mixed solution can be discharged before or after by gas lift.Operation partial concentration mixed solution in settling chamber being sent into anaerobic reaction room can intermittently or be carried out continuously.Opportunity and the time length of carrying out this operation can be determined arbitrarily according to the particular case of the interface location between supernatant liquor and concentrated mixed solution and/or Mud up-floating, as long as the position this interface control can expected.Such as, when this interface location is higher, the partial concentration mixed solution in settling chamber can be sent into anaerobic reaction room to reduce the position at this interface, guarantee effluent quality; And being about to or when there is Mud up-floating, the part or all of of the part or all of even supernatant liquor of the concentrated mixed solution in settling chamber can being discharged, preferably send into anaerobic reaction room, thus reduce described interface and avoid or eliminate Mud up-floating.
Not by any theory constraint, think and occur that the major cause of Mud up-floating is in settling chamber: cause anaerobic digestion due to anoxic, produce methane and carbon dioxide, sludge absorption gas and floating.Therefore, regularly carry out Air Exposure with intermittent mode, can anaerobic digestion be suppressed, pulverize mud agglomerate, thus improve the settling property of mud, effectively avoid the generation of Mud up-floating.In addition, utilize aerating gas can realize larger concentrated mixed-liquor return amount by the mixture of airstream and strength liquid riser tube, decrease the residence time of mud in settling chamber, the anaerobic digestion being conducive to avoiding anoxic to cause and corresponding sewage float.
Tower biological sewage treatment device of the present invention introduces settling chamber after being separated with mixed solution by aerating gas in solarization air cell respectively, aerating gas promotes the concentrated mixed solution of bottom, settling chamber by means of only the mixture of airstream and strength liquid lift technique, substantially avoided aerating gas is separated the process forming supernatant liquor and concentrated mixed solution disturbance to mixed solution in settling chamber, utilize aerating gas to be also conducive to reducing the position at the interface between supernatant liquor in settling chamber and concentrated mixed solution with the concentrated mixed solution that large quantity of reflux constantly extracts bottom, settling chamber out simultaneously, reduce the residence time of mud in settling chamber, be conducive to preventing or eliminating Mud up-floating.
In addition, the concentrated mixed solution extracted out by the mixture of airstream and strength liquid riser tube no longer enters settling chamber by directly returning solarization air cell after gas-liquid separation groove, therefore it also avoid interference mixed solution being separated to the process forming supernatant liquor and concentrated mixed solution.
Moreover, be arranged on aeration tube in settling chamber can to the supernatant liquor in settling chamber regular aeration, or when being about to or having been formed sludge bulking or Mud up-floating occurs to supernatant liquor aeration, add the dissolved oxygen of sludge bulking surrounding environment, improve the settling property of mud, the formation of sludge bulking can be suppressed, broken established sludge bulking, thus avoid Mud up-floating and ensure that the separating effect of settling chamber, settling chamber can be worked steadily in the long term.
In addition, by in the anaerobic reaction room below at least part of feeding solarization air cell of the concentrated mixed solution in settling chamber, can by the supernatant liquor in this settling chamber and the interface control between concentrated mixed solution in the position expected to guarantee effluent quality, and can avoid in time or eliminate Mud up-floating when needed.
Further, the present inventor is surprised to find that, when adopting aerating gas to promote concentrated mixed solution, the denitrification effect of sewage disposal and/or the effect of removal COD obtain beyond thought raising.Be not bound by any theory, mix with sewage charging again after the concentrated mixed solution can thinking from settling chamber contacts with oxygen-containing gas (preferred aerating gas), enhance denitrification, thus achieve better denitrogenation and remove the effect of COD.
Tower sludge organism treatment unit of the present invention utilizes aerating gas to realize sludge reflux, sludge reflux pump can not be re-used, because this reducing energy consumption and facility investment, make the layout of device and technique more flexible, and because the moving parts decreasing device is connected with pipeline, improve the reliability of device.In addition, biological sewage treatment device compact construction of the present invention, reduces volume and the floor space of whole device.
Tower biological sewage treatment device floor space of the present invention is little, stable and reliable operation, basic Maintenance free, is suitable for inserting in buildings or at least partly and imbeds underground, or be arranged on moveable platform, and be particularly suitable for the needs of small-scale community sewage treatment in situ.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the tower biological sewage treatment device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, some embodiments of the present invention are further introduced, but be not intended to limit protection scope of the present invention.
Fig. 1 is the structural representation of an embodiment according to tower biological sewage treatment device of the present invention, wherein said tower biological sewage treatment device comprises anaerobic reaction room (1), be arranged on the solarization air cell (25) of top, anaerobic reaction room (1), be arranged on the settling chamber (21) above solarization air cell, and the dividing plate (12) be arranged between solarization air cell (25) and settling chamber (21), the gas skirt (11) for collecting aerating gas and the intercepting basin (9) for collecting mixed solution is provided with in solarization air cell (25), the mixture of airstream and strength liquid riser tube (16) and gas-liquid separator tank (15) is provided with in settling chamber (21).These unit are all arranged in single cylindrical tower (or polygon tower) (tower that such as 10-30 rice is high).
Sewage charging from water inlet pipe (6) enters anaerobic reaction room (1) after sewage feed valve (5) and pump (4).Sewage charging can form laminar flow upwards in anaerobic reaction room (1), mud in anaerobic reaction room (1) is stably suspended thus formation mud bed in the balance of flowing and sedimentation, and at this moment anaerobic reaction room (1) just becomes flow lifting type sludge bed reactor.Continue the clear liquid that upwards flows through mud bed and enter solarization air cell (25) by opening (2) on dividing plate (27) (preferably have unidirectional pass through device).Optionally, gas collector (such as US6,063, the gas skirt described in 273) (not shown) can be set in dividing plate (27) below to collect the gases such as the methane of anaerobic reaction generation.
Clear liquid from anaerobic reaction room (1) mixes with aerobic mixed solution in solarization air cell (25).Aerating gas enters solarization air cell (25) through inlet pipe (26) and carries out Air Exposure to mixed solution wherein.Solarization air cell also can arrange aerator (not shown) in (25).After aeration, aerating gas accumulates in the annular gas skirt (11) on solarization air cell (25) top, and aeration mixed solution then enters intercepting basin (9), thus makes being separated of aerating gas and aeration mixed solution.
Mixed solution via through holes in intercepting basin (9) or pipeline (10) enter the bottom of settling chamber (21), and are separated the formation supernatant liquor on top and the concentrated mixed solution of bottom in settling chamber (21).Supernatant liquor is discharged as water outlet (17) from overflow groove (18).Concentrated mixed solution sinks to entering mud-collecting slot (24), and enters extract pipe (16) from the lower entrances of extract pipe (16).Aerating gas in gas skirt (11) enters extract pipe (16) through airway (22), will be promoted by air conveying from the concentrated mixed solution of mud-collecting slot (24) in extract pipe (16).Then the gas in extract pipe (16) flows out from the top exit of extract pipe (16) together with mixed solution, and enters in gas-liquid separation groove (15) and carry out gas-liquid separation, and the gas of separation is discharged, and the concentrated mixed solution of separation is stayed in gas-liquid separation groove (15).The concentrated mixed solution of at least part of separation can return to the bottom of solarization air cell (25) through the first concentrated mixed-liquor return pipe (23).
When needed, such as water sludge interface is too high when affecting effluent quality, the concentrated mixed solution in mud-collecting slot (24) can escape and enter anaerobic reaction room (1) through the second concentrated mixed-liquor return pipe (8), valve (7) and pump (4) at least partly.Can effectively control and regulate the height of water sludge interface in settling chamber (21) by valve (7), guarantee effluent quality.
When needed, aerating gas from inlet pipe (19 and 14) also can through entering middle part or the top of settling chamber (21) as the gas distribution tube (20 and 13) of sludge bulking shredder assembly, make wherein the sludge bulking of not free settling carry out fragmentation to improve its settleability by the stirring of aerating gas, prevent Mud up-floating.Aerating gas from inlet pipe (19 and 14) can regularly or off and on enter settling chamber (21), can pass through shut-off valve (5) during this period to stop the charging of supply sewage, prevent mud from discharging with water outlet (17).After sludge bulking fragmentation completes, the aerating gas of inlet pipe (19 and 14) stops entering settling chamber (21), broken sludge bulking sinks to entering mud-collecting slot (24) gradually, then solarization air cell (25) is entered through extract pipe (16), gas-liquid separation groove (15) and the first concentrated mixed-liquor return pipe (23), thus eliminate the sludge bulking on middle part, settling chamber (21) or top, prevent Mud up-floating.
Tower biological sewage treatment device of the present invention and method fast and effeciently can control the interface location in settling chamber between supernatant liquor and concentrated mixed solution, prevent or eliminate the Mud up-floating in settling chamber, thus making tower biological sewage treatment device can Effec-tive Function steadily in the long term.
Below the mode illustrated by way of example describes the present invention.But, should be appreciated that the present invention is not limited only to absolutely these embodiments.Those of ordinary skill can carry out various amendment or variation to the present invention, and these amendments and variation all belong to protection scope of the present invention.
Claims (17)
1. a tower biological sewage treatment device, comprise settling chamber and use the mixture of airstream and strength liquid lift technique concentrating mixed solution in settling chamber described in gas lift, also comprise solarization air cell, described solarization air cell has the gas skirt for collecting aerating gas in solarization air cell, and at least part of described gas is the aerating gas from described gas skirt, wherein said solarization air cell also has the intercepting basin for collecting mixed solution in solarization air cell, described settling chamber and described liquid collecting fluid communication, and concentrated mixed solution at least part of described settling chamber is from the mixed solution of described intercepting basin.
2. tower biological sewage treatment device according to claim 1, wherein said the mixture of airstream and strength liquid lift technique is the mixture of airstream and strength liquid riser tube, it is vertical for drawing the extract pipe of described concentrated mixed solution and the airway for described gas being imported described extract pipe with described extract fluid communication to comprise, described extract pipe has for drawing the entrance of described concentrated mixed solution and the outlet for discharging described gas and concentrated mixed solution, and described airway is connected to middle part or the bottom of described extract pipe.
3. tower biological sewage treatment device according to claim 2, the bottom of wherein said settling chamber is provided with mud-collecting slot, and the entrance of described extract pipe stretches into described mud-collecting slot.
4. tower biological sewage treatment device as claimed in one of claims 1-3, also comprises for separating of from the described concentrated mixed solution of the mixture of airstream and strength liquid lift technique and the gas-liquid separation groove of gas.
5. tower biological sewage treatment device according to claim 4, described gas-liquid separation groove is communicated with the outlet fluid of described extract pipe.
6. tower biological sewage treatment device according to claim 2, wherein said gas skirt and described air guide fluid communication.
7. tower biological sewage treatment device according to claim 1, also comprises the dividing plate be arranged between described solarization air cell and described settling chamber.
8. tower biological sewage treatment device according to claim 7, the top of described intercepting basin is limited by the described dividing plate of part, and this part of described dividing plate is provided with the through hole or the pipeline that are entered settling chamber for mixed solution by intercepting basin.
9. tower biological sewage treatment device according to claim 4, is provided with the first concentrated mixed-liquor return pipe for the concentrated mixed solution of described gas-liquid separation groove being sent into described solarization air cell between wherein said gas-liquid separation groove and described solarization air cell.
10. tower biological sewage treatment device according to claim 4, also comprise the anaerobic reaction room be arranged on below described solarization air cell, and between described gas-liquid separation groove and described anaerobic reaction room, be provided with the second concentrated mixed-liquor return pipe for the concentrated mixed solution of described gas-liquid separation groove being sent into described anaerobic reaction room.
11. tower biological sewage treatment devices as claimed in one of claims 1-3, also comprise power house and interchanger, and the heat that wherein said interchanger utilizes power house medium power equipment to discharge heats the mixed solution in described biological sewage treatment device.
12. tower biological sewage treatment devices as claimed in one of claims 1-3, also comprise the sludge bulking shredder assembly be arranged in described settling chamber.
13. 1 kinds of biological method for treating waste water, comprise the concentrated mixed solution used in gas lift settling chamber, wherein at least part of described gas is from aerating gas, also comprise the mixed solution in the solarization air cell of collection respectively and aerating gas, mixed solution is carried out in described settling chamber precipitation process to obtain supernatant liquor and concentrated mixed solution, in the mixture of airstream and strength liquid lift technique, mixed solution will be concentrated with aerating gas promote.
14. biological method for treating waste water according to claim 13, are also included in gas-liquid separation groove and are separated with concentrated mixed solution by the aerating gas from the mixture of airstream and strength liquid lift technique, and the concentrated mixed solution be separated at least partly is sent into solarization air cell.
15. biological method for treating waste water according to claim 13, also comprise: regularly or be about in settling chamber's supernatant liquor or carry out Air Exposure to the supernatant liquor in settling chamber when there is sludge bulking.
16. biological method for treating waste water according to claim 13, also comprise and the concentrated mixed solution at least part of settling chamber are sent into anaerobic reaction room.
17. biological method for treating waste water according to claim 13, also comprise the step of the heat heating mixed solution utilizing power-equipment to discharge.
Priority Applications (25)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310049813.5A CN103979670B (en) | 2013-02-07 | 2013-02-07 | Tower biological sewage treatment device |
| TW102123982A TWI472488B (en) | 2012-07-06 | 2013-07-04 | Apparatus and method for biological sewage treatment |
| MX2015000022A MX350052B (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment. |
| AP2014008142A AP2014008142A0 (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| PE2015000005A PE20150188A1 (en) | 2012-07-06 | 2013-07-05 | APPARATUS AND METHOD FOR THE BIOLOGICAL TREATMENT OF WASTEWATER |
| US14/413,179 US9771286B2 (en) | 2012-07-06 | 2013-07-05 | Apparatus for biological sewage treatment |
| IN10907DEN2014 IN2014DN10907A (en) | 2012-07-06 | 2013-07-05 | |
| PCT/CN2013/078850 WO2014005540A1 (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| EP13812723.8A EP2870112B1 (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| SG11201408737TA SG11201408737TA (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| KR1020157001177A KR101997192B1 (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| CA2876906A CA2876906C (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| PL13812723T PL2870112T3 (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| EA201590029A EA028145B1 (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| JP2015518826A JP5961756B2 (en) | 2012-07-06 | 2013-07-05 | Biological sewage treatment apparatus and method |
| PT138127238T PT2870112T (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| AU2013286401A AU2013286401B2 (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| BR112015000189A BR112015000189A2 (en) | 2012-07-06 | 2013-07-05 | apparatus and method for biological sewage treatment |
| ARP130102395A AR092345A1 (en) | 2012-07-06 | 2013-07-05 | APPARATUS AND METHOD FOR THE BIOLOGICAL TREATMENT OF WASTEWATER |
| ES13812723.8T ES2626500T3 (en) | 2012-07-06 | 2013-07-05 | Apparatus and procedure for biological wastewater treatment |
| NZ702990A NZ702990A (en) | 2012-07-06 | 2013-07-05 | Apparatus and method for biological sewage treatment |
| IL236145A IL236145A0 (en) | 2012-07-06 | 2014-12-09 | Apparatus and method for biological sewage treatment |
| PH12014502878A PH12014502878A1 (en) | 2012-07-06 | 2014-12-23 | Apparatus and method for biological sewage treatment |
| CL2014003524A CL2014003524A1 (en) | 2012-07-06 | 2014-12-24 | Apparatus and method for biological wastewater treatment |
| CO15008213A CO7180203A2 (en) | 2012-07-06 | 2015-01-16 | Apparatus and method for the biological treatment of wastewater |
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| CN201310049813.5A CN103979670B (en) | 2013-02-07 | 2013-02-07 | Tower biological sewage treatment device |
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| CN103979670A CN103979670A (en) | 2014-08-13 |
| CN103979670B true CN103979670B (en) | 2016-04-06 |
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| CN106957105B (en) * | 2016-01-11 | 2020-07-03 | 中国石油化工股份有限公司 | Secondary sedimentation tank with improved structure and method for inhibiting growth of filamentous fungi by using secondary sedimentation tank |
| CN108033632B (en) * | 2017-12-11 | 2023-10-17 | 金锣水务有限公司 | Pneumatic lifting device for sewage biological treatment equipment |
| CN111573899B (en) * | 2020-05-28 | 2022-04-29 | 日照悦兴化工有限公司 | Industrial sewage treatment equipment |
| CN113697941A (en) * | 2021-09-18 | 2021-11-26 | 镇江同源胜环境科技有限公司 | Device for reducing floating sludge of up-flow anaerobic ammonia oxidation reactor |
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| CN203238086U (en) * | 2013-02-07 | 2013-10-16 | 李进民 | Tower type wastewater bio-treatment device |
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| US6984323B2 (en) * | 2001-11-05 | 2006-01-10 | Khudenko Boris M | Biological treatment process |
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| CN200949077Y (en) * | 2006-07-28 | 2007-09-19 | 重庆大学 | Active sludge-biological film combined type integral sewage treatment equipment |
| CN201883000U (en) * | 2010-08-06 | 2011-06-29 | 李进民 | Biological sewage treatment device |
| CN202170280U (en) * | 2011-07-26 | 2012-03-21 | 武汉沃特工程技术有限公司 | Buried integrated sewage treatment machine |
| CN203238086U (en) * | 2013-02-07 | 2013-10-16 | 李进民 | Tower type wastewater bio-treatment device |
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Application publication date: 20140813 Assignee: Gongs Water Company Limited Assignor: Li Jinmin|Zhou Liankui|Li Dayong Contract record no.: 2017990000219 Denomination of invention: Tower type wastewater bio-treatment device Granted publication date: 20160406 License type: Exclusive License Record date: 20170608 |
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Effective date of registration: 20190422 Address after: 276036 Station of Bancheng Town, Lanshan District, Linyi City, Shandong Province Patentee after: Gongs Water Company Limited Address before: 2736 Jinluo Science Park, Bancheng Town, Lanshan District, Linyi City, Shandong Province Co-patentee before: Zhou Liankui Patentee before: Li Jinmin Co-patentee before: Li Dayong |