CN201046930Y - Reentrant flow inner loop aeration biological filter tank - Google Patents
Reentrant flow inner loop aeration biological filter tank Download PDFInfo
- Publication number
- CN201046930Y CN201046930Y CNU2006200772347U CN200620077234U CN201046930Y CN 201046930 Y CN201046930 Y CN 201046930Y CN U2006200772347 U CNU2006200772347 U CN U2006200772347U CN 200620077234 U CN200620077234 U CN 200620077234U CN 201046930 Y CN201046930 Y CN 201046930Y
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- filter
- water
- tank
- flow process
- turning back
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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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- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model relates to an improvement on reentry flow aeration organism filter chamber and is characterized in that a filter chamber or a precoat interval in a filter cartridge is provided with a vertical spacing board or a sleeve, with being arranged in suspension or arranged not suspended but at least having a transverse through hole at bottom to lead treated water to form an intrinsic cycle fluid state in the precoat of the organism aeration filter chamber. By adopting the structure, the utility model prolongs the flow and time that the treated water passes through the precoat and improves the medium transfer between the treated water and an organism compared with an aeration filter chamber with the same section. Compared with the original aeration organism filter chamber, the utility model has the advantages of high capacities of resistance to impact and virussafe of microorganism, stable water yielding, low suspended substance of water yielding, and high oxygen operating factor, thereby improving the water treatment capacity and also saving backwash water.
Description
Technical field
Utility model relates to a kind of waste water aerobic biological treatment device, especially about to having the improvement of the flow process inner circulating aerating biological filtering tank of turning back.
Background technology
BAF is easily cultivated because of having microbial film, and microbial profile is reasonable, and the residence time is short, and processing power is strong, energy consumption is low, the nitrification efficiency height, and sludge yield is few, the treating processes free from extraneous odour produces, and water outlet does not need to be provided with separately characteristics such as two settling tanks, thereby is much accounted of in sewage disposal.
Yet BAF is by the treating water filter material layer of flowing through, and carries out mass transfer with microorganism and is purified, and limited by equipment volume, and the biological filter can not be done very highly, thereby BAF usually conduct flow process is shorter.The deficiency of short flow process: coefficient of oxygen utilization is low relatively; Shock resistance, toxin immunity ability; The mass transfer amount is little between water and filtrate; Back flushing easily causes microbial film to run off, and reduces biomass; For some complicated hard-degraded substances, still to fail to degrade fully and promptly discharge with water outlet, degradation capability is poor; Easily produce short stream or channel; These all can influence treatment effect and effluent quality, occur the instability that exceeds standard easily.And the total cross section back flushing water yield is big, needs auxiliary facility big, and water loss is many, the energy consumption height.Therefore existing BAF treatment scheme is short, is the main deficiency of this process unit.
Chinese patent 200510110444.1 disclosed single-stage inner circulating aerating biological filtering tanks are at the filter tank pool center guide shell to be set, and the guide shell outside is the biofilter material district, and the guide shell bottom is provided with aerating apparatus.Because lifeless matter carrier filtrate in the guide shell only plays the aeration aerating Circulation, thereby do not have the biological filter function, do not reach prolongation biological filter flow process effect.
The disclosed biological reactor with internal circulating double filtering of Chinese patent 200510043436.X is provided with selected quantity cyclic aeration tube in the body of pond.Do not have biofilter material in the same cyclic aeration tube, it only is to be the increase inner circulating aerating that inner core is set, and sewage circulates between cyclic aeration tube, filter material layer, and is described as application documents, is a kind of activated sludge process and biomembrance process combined process.Technical scheme essence is identical with above-mentioned patent, has above-mentioned deficiency equally.
Chinese patent 200420033672.4 disclosed water conservancy diversion BAF adopt U type bipyramid water conservancy diversion aerating filter, and inner cone is provided with filtrate becomes convection current contact bio-oxidation filtrating area, and outer cone is provided with filler becomes the biofiltration district, and the bottom is water conservancy diversion sedimentation recirculating zone.Though filtrate also is set in this inner draft tube, said as its specification sheets is a kind of bio-oxidation, biofiltration and sedimentation backflow combination water treatment unit, the function that rises not is to prolong the filter tank treatment scheme, and effective efficiency district in biological filter is little, so can only be used for secondary or tertiary treatment; And the water conservancy diversion sedimentation recirculating zone that the bottom is bigger, both wasted the device space, the bottom is provided with water conservancy diversion sedimentation recirculating zone simultaneously, can easily bring bottom mud into filter material layer during filter back washing, influence the backwash effect in filter tank on the contrary, and then influence effluent quality, and required backwashing time is long, and water consumption is big; Secondly, oxygen supply is not the filter tank total cross section, only is the convection current contact bio-oxidation district of inner cone, and outer cone just becomes and is mainly filtering function, can not make full use of the biological filter function; Besides, this device only is simple backflow, does not form the mixed cycle for the treatment of water and water inlet, can not improve impact resistance, and is also poor to the hard-degraded substance degradation effect.
This shows,, all not relate to that prolong the biological filter treatment scheme, therefore still having is worth improved place by the aerating filter bio-carrier is separated out though people propose the internal recycle tube is set in BAF.
The utility model content
The purpose of utility model is to overcome the deficiency of above-mentioned prior art, provides a kind of and can prolong aeration and biological filtrate treatment scheme, and treatment effect is good, stable water outlet, and the back flushing water yield is little, the flow process inner circulating aerating biological filtering tank of turning back that coefficient of oxygen utilization is high.
A purpose again of utility model is to provide a kind of and can improves impact resistance and/or poison resistance, guarantees the flow process inner circulating aerating biological filtering tank of turning back of stable water outlet.
Utility model first purpose realizes that main the improvement is in BAF carrier filtrate district, by the partition form is set, treating water is complied with cut off the cycling stream of turning back and cross the biofilter material layer, prolong the biological filter treatment scheme thereby reach, strengthen the mass transfer ability, realize the utility model purpose.Specifically, the utility model flow process inner circulating aerating biological filtering tank of turning back, comprise filter tank or filter cylinder body, built-in biological carrier filtrate, filtrate below apparatus of oxygen supply, it is characterized in that the intravital filter material layer of filter tank or filter cylinder be provided with unsettled setting or not unsettled but at least the bottom the vertical space bar or the sleeve of cross through hole are arranged, make treating water form circulating fluidized at the biological aerated filter filter material layer.
Cut off unsettled setting in the utility model filter material layer, then treating water can form the stream of turning back according to both ends of the surface, is provided with if connect the end, and treating water then forms the stream of turning back by the cross through hole of end regions.
The below aeration oxygen supply of said filtrate, identical with former BAF, be the oxygen supply of filtrate total cross section.
Said formation is turned back to flow and is cut off, and a kind of being preferably adopted vertical space bar form, and it can be arranged several in parallel according to cross section, biological filter and treating water situation, and formation is repeatedly turned back circulating fluidized, further increases treatment scheme.
In addition, utility model can also be provided with water mixer (for example jet mixer) below inhalant region, carrier filter material layer, by the mixing tank special construction, mix by gas, water or water, water drainage, the partially disposed water that promptly carries the filter material layer of having flowed through mixes, dilutes with water inlet, improves anti-shock loading and/or poison resistance, and can make hard-degraded substance by continuous circular treatment, and thoroughly degraded, thereby guaranteed the stability of water outlet.
Utility model is passed through traditional BAF texture improvement, in BAF filter material layer interval, the vertical space bar or the sleeve that can form the cycling stream of turning back are set, make treating water form the cycling stream of turning back at the biological filter filter material layer, the flow process and the duration of contact for the treatment of water and filter material layer have been prolonged than the same cross-sectional aerating filter, thereby strengthened biomembranous gas-liquid mass transfer effect on treating water and the carrier filtrate, improved processing power.Handle the circulation of waste water at the BAF filter material layer, also make BAF have the characteristics of complete mixing reactor, can make and enter in the aerating filter waste water and mix with treating water in the aerating filter and obtain dilution, improved the antitoxin and impact resistance of aerating filter, guarantee the stable of treat effluent, and the load influence that is not hit; The internal recycle fluidised form has also improved treating water flow velocity in BAF, has also strengthened the mass transfer effect between treating water and the organism, is favourable to improving processing efficiency.The long treatment scheme of circulation repeatedly also makes underwater bubble repeatedly, pass in filter material layer for a long time, causes the utilization ratio of overall oxygen to improve greatly; Repeatedly the long treatment scheme of circulation can also effectively overcome the bias current that might occur, the de-stabilising effect that channel brings treat effluent; Repeatedly the long treatment scheme of circulation make filtrate biofiltration ability strengthen, thereby it is low to go out water suspension; The treatment scheme of repeatedly circulation length, especially the mixed cycle once more of partially disposed water and water inlet, make the material that some difficult degradations are fully degraded again, prolonged the degradation time for the treatment of water in the filter tank, thereby can effectively, thoroughly degrade and remove, also help guaranteeing effluent quality, and reduced to need follow-up desalination to handle the pollution of using film, prolonged the work-ing life of film.Separate the series connection back flushing, the backwash water yield is little, helps saving the backwash water.
Below in conjunction with three embodiments, further specify utility model, but embodiment should not be construed as the concrete qualification to the utility model structure.
Description of drawings
Fig. 1 is utility model the 1st an embodiment BAF structural representation.
Fig. 2 is utility model the 2nd an embodiment BAF structural representation.
Fig. 3 is utility model the 3rd an embodiment BAF structural representation.
Embodiment
Embodiment 1: referring to Fig. 1, the utility model flow process inner circulating aerating biological filtering tank of turning back is by filter tank (also can filter cylinder) 1, built-in biological carrier filtrate 4, and carrier filtrate bottom apparatus of oxygen supply 5 compositions, penetrating filter material layer has vertical unsettled setting (bottom does not link to each other) inner core 3.Treating water 6 is entered by inner core top, passes inner core carrier filtrate, flow out through unsettled inner core bottom and upwards turn back, once more by inner core outside carrier filter material layer, forms circulating fluidized, at last by 2 discharges of top water outlet.
Embodiment 2: referring to Fig. 2, and another flow process inner circulating aerating biological filtering tank of turning back, by filter cylinder (also can filter tank) 1, built-in biological carrier filtrate 4, and carrier bottom apparatus of oxygen supply 5 forms, penetrating filter material layer has vertically unsettled some alternate vertical clapboards 7 that are provided with.Treating water 6 is entered by a lattice filtrate bottom of dividing plate lattice by aerating filter, by this lattice carrier filtrate, is turned back by another lattice carrier filtrate bed by top, and the formation of repeatedly turning back is circulating fluidized, is discharged by top water outlet 2 at last.
Embodiment 3: referring to Fig. 3, as embodiment 2, another flow process inner circulating aerating biological filtering tank of turning back, be provided with jet mixer 8 at feed-water end, can help part is mixed with water inlet by carrier filtrate treating water, increase treatment scheme and the time for the treatment of water in the filter tank, can improve shock resistance and/or poison resistance, and the abundant degraded of hard-degraded substance.
In addition, dividing plate or inner core can also connect at the bottom of the pond and be provided with, and at dividing plate or the inner core petiolarea of going to the bottom the cross through hole that can flow over are arranged at least; In addition, dividing plate also can suitably be obliquely installed; The dividing plate number is decided according to the aerating filter cross section; Jet mixer is used other mixing tanks that similar functions is arranged instead; And respectively separate the unit, filter tank and adopt different performance filtrate (helping improving the treatment effect of some specific pollutants) or the like, these unsubstantialities change, and all truely use novel protected scope.
Following in utility model is said is to be different to adopt external pump around circuit pipe, and treating water is returned the outer circulation of processing again by return line, and outer circulation still is a single process with respect to a treating processes.
Adopt utility model BAF and the common BAF of not having the cycling stream of turning back, handle with once preliminary treatment to CODcr142mg/l, oily 12.5mg/l, NH
3The Rubber Industrial Wastewater of-N53.2mg/l, gas-water ratio 1: 3-5, PH8.2 basicity 200mg/l, microorganism active 〉=10
11Individual/gram.The BAF result of two kinds of structures: adopt no cyclic aeration biological filter to handle water outlet average CODcr 95.8mg/l, oily 5.2mg/l, NH
3-N5.38mg/l, clearance are respectively 32.5,58.4,89.9; Adopt embodiment 2 inner circulating aerating biological filtering tanks to handle water outlet average CODcr 60mg/l, oily 0.85mg/l, NH
3-N0.1mg/l, clearance are respectively 57.8,93.2,99.8.
Claims (7)
1. the flow process of turning back inner circulating aerating biological filtering tank, comprise filter tank or filter cylinder body, built-in biological carrier filtrate, filtrate below apparatus of oxygen supply, it is characterized in that the intravital filter material layer of filter tank or filter cylinder be provided with unsettled or not unsettled but at least the bottom the vertical space bar or the sleeve of cross through hole are arranged, make treating water form circulating fluidized at the biological aerated filter filter material layer.
2. according to the described flow process inner circulating aerating biological filtering tank of turning back of claim 1, it is characterized in that vertical space bar or sleeve penetrate the setting of carrier filter material layer.
3. according to claim 1 or the 2 described flow process inner circulating aerating biological filtering tanks of turning back, it is characterized in that forming circulating fluidized partition is vertical space bar.
4. according to the described flow process inner circulating aerating biological filtering tank of turning back of claim 3, it is characterized in that the filter tank water-in is arranged on by a lattice filtrate bottom of dividing plate lattice.
5. according to the described flow process inner circulating aerating biological filtering tank of turning back of claim 4, it is characterized in that there is mixing tank inhalant region filtrate below.
6. according to claim 1,2, the 4 or 5 described flow process inner circulating aerating biological filtering tanks of turning back, it is characterized in that respectively separating unit, filter tank filtrate difference.
7. according to the described flow process inner circulating aerating biological filtering tank of turning back of claim 3, it is characterized in that respectively separating unit, filter tank filtrate difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200772347U CN201046930Y (en) | 2006-09-21 | 2006-09-21 | Reentrant flow inner loop aeration biological filter tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200772347U CN201046930Y (en) | 2006-09-21 | 2006-09-21 | Reentrant flow inner loop aeration biological filter tank |
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| Publication Number | Publication Date |
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| CN201046930Y true CN201046930Y (en) | 2008-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2006200772347U Expired - Lifetime CN201046930Y (en) | 2006-09-21 | 2006-09-21 | Reentrant flow inner loop aeration biological filter tank |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774686A (en) * | 2010-04-02 | 2010-07-14 | 孟翔麟 | Biological contact oxidation pond for recirculating aquaculture system |
| CN101973641A (en) * | 2010-10-09 | 2011-02-16 | 江苏博大环保股份有限公司 | Hyposmosis/super-hyposmosis oil extraction sewage reinjection method in oil field |
| CN103112944A (en) * | 2013-02-18 | 2013-05-22 | 中冶华天南京工程技术有限公司 | Internal circulating nitrification filtering tank |
| CN104925948A (en) * | 2015-06-30 | 2015-09-23 | 重庆云图工程技术有限公司 | Immersed circulating biofilter reactor and sewage treatment method |
| CN111943352A (en) * | 2020-07-23 | 2020-11-17 | 浙江建投环保工程有限公司 | Biological filter for wastewater treatment |
| CN113875680A (en) * | 2021-11-03 | 2022-01-04 | 广东海洋大学 | Simple economic experimental circulating water culture system and culture process thereof |
-
2006
- 2006-09-21 CN CNU2006200772347U patent/CN201046930Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774686A (en) * | 2010-04-02 | 2010-07-14 | 孟翔麟 | Biological contact oxidation pond for recirculating aquaculture system |
| CN101973641A (en) * | 2010-10-09 | 2011-02-16 | 江苏博大环保股份有限公司 | Hyposmosis/super-hyposmosis oil extraction sewage reinjection method in oil field |
| CN101973641B (en) * | 2010-10-09 | 2012-12-05 | 江苏博大环保股份有限公司 | Hyposmosis/super-hyposmosis oil extraction sewage reinjection method in oil field |
| CN103112944A (en) * | 2013-02-18 | 2013-05-22 | 中冶华天南京工程技术有限公司 | Internal circulating nitrification filtering tank |
| CN103112944B (en) * | 2013-02-18 | 2015-06-03 | 中冶华天南京工程技术有限公司 | Internal circulating nitrification filtering tank |
| CN104925948A (en) * | 2015-06-30 | 2015-09-23 | 重庆云图工程技术有限公司 | Immersed circulating biofilter reactor and sewage treatment method |
| CN111943352A (en) * | 2020-07-23 | 2020-11-17 | 浙江建投环保工程有限公司 | Biological filter for wastewater treatment |
| CN113875680A (en) * | 2021-11-03 | 2022-01-04 | 广东海洋大学 | Simple economic experimental circulating water culture system and culture process thereof |
| CN113875680B (en) * | 2021-11-03 | 2023-12-15 | 广东海洋大学 | Simple economic experiment type circulating water culture system and culture process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080416 |
|
| EXPY | Termination of patent right or utility model |