CN102001751B - Continuous backwashing aeration biofilter - Google Patents
Continuous backwashing aeration biofilter Download PDFInfo
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- CN102001751B CN102001751B CN2010106005797A CN201010600579A CN102001751B CN 102001751 B CN102001751 B CN 102001751B CN 2010106005797 A CN2010106005797 A CN 2010106005797A CN 201010600579 A CN201010600579 A CN 201010600579A CN 102001751 B CN102001751 B CN 102001751B
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Abstract
This invention discloses a continuous backwashing aeration biofilter, comprising a cylinder, a feed water distribution system inserted into the cylinder and used for feeding raw water, an aeration system inserted to the cylinder and used for feeding air, a clear water drainage system arranged on the cylinder and used for draining treated clear water, a filter material box arranged at the bottom of the cylinder and communicated with an inner chamber of the cylinder, a filter material cleaning device arranged at the top of the cylinder and communicated with the inner chamber of the cylinder and used for cleaning the filter material, and a filter material lifter used for lifting the filter material. The filter material box contains the filter material used for retaining suspended solids and facilitating the growth of a biofilm. The filter material box, the filter material lifter and the filter material cleaning device are connected in turn through a filter material lifting pipe. This continuous backwashing aeration biofilter realizes continuous backwashing of the filter material without shut-down, is capable of continuously running, convenient for operation, energy-saving and high in processing efficiency.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of biological aerated filter device.
Background technology
" BAF " is a kind of of " biomembrance process " sewage disposal technology; Its technological principle is for being filled with the granule filter material of high-specific surface area in the filter tank; So that the carrier of microbial film growth to be provided, the bottom, filter tank is equipped with aerator, and air contacts with sewage in the same way; Make the biomembrane generation biochemical reaction of organic matter and filter material surface in the sewage be able to degraded and remove, filtrate plays the filtration interception simultaneously.The maximum characteristics of BAF are to integrate biological oxidation and hold back suspended solid, have saved follow-up secondary sedimentation tank, and its maximum advantage is to reduce BOD
5, functions such as nitrification and denitrification are carried out in a reactor.
There is the filtrate pickup in domestic traditional BAF, and easy blocking needs the frequent shutdown backwash, just can guarantee work; And owing to reasons such as biological mud viscositys, also there is the problem of backwash difficulty, needs a large amount of air and water associating backwash; Above-mentioned shortcoming causes complicated operation, energy waste, inefficiency, has also limited its application.
Summary of the invention
In view of this, the invention provides a kind of continuous backwash biological aerated filter device, this biofilter can move continuously, need not to shut down the backwash of carrying out filtrate, and is easy to operate, saves energy consumption, and treatment effeciency is high.
Continuous backwash biological aerated filter device of the present invention; Comprise cylindrical shell, stretch into the water inlet water distribution system that is used to feed former water in the cylindrical shell, stretch into the aerating system that is used for bubbling air in the cylindrical shell, be arranged at be used to discharge the clear water exhaust system of handling the back clear water on the cylindrical shell, be arranged at filtrate case that the cylindrical shell bottom is communicated with cylinder lumen, filtrate lifter that being used to of being arranged at that the cylindrical shell top is communicated with cylinder lumen cleans the filtering material cleaning device of filtrate and be used to promote filtrate; The filtrate that is used to hold back suspended solid and confession biofilm development is housed in the said filtrate case, and said filtrate case, filtrate lifter and filtering material cleaning device are communicated with through the filtrate riser successively.
Further, said filtering material cleaning device is upper coarse and lower fine conically shaped, and its upper end is communicated with muddy water delivery pipe and said filtrate riser respectively, and the bottom has the mouth that supplies filtrate to flow out, and said filtrate riser and said conically shaped are tangent;
Further, have the sieve aperture of aperture on the said conically shaped sidewall less than particle diameter of filter medium;
Further, said filtrate lifter is for using the lifting device of compressed air as power source;
Further, said filtrate riser is transparent plastic conduit, and its part is positioned at the cylindrical shell outside;
Further, be communicated with the filtrate demoulding device of inner chamber buckle toothing between said filtrate lifter and the said filtering material cleaning device;
Further, said cylindrical shell top is cylinder, and the bottom is a reverse taper, is provided with the periodically vibration air bag that is used to compress filtrate of breathing in the said reverse taper;
Further, said water inlet water distribution system comprise the distribution main and be communicated with the distribution main at cylinder internal diameter to the range pipe that distributes, said range pipe is positioned at the cylindrical shell bottom, its tube wall has apopore downwards, said clear water exhaust system is positioned at the cylindrical shell top;
Further, said distribution main also is communicated with wash tub pipe, and the termination of said range pipe is stretched out cylindrical shell and flushing valve is installed;
Further; Said aerating system comprise the aeration house steward and be communicated with the aeration house steward at cylinder internal diameter to the aeration arm that distributes; Said aeration arm is positioned at the cylindrical shell middle part; Its tube wall upwards has solarization air cap, and said biofilter comprises that also the nitrification liquid with cylindrical shell top is back to return-flow system in the nitrification liquid of cylindrical shell bottom.
Beneficial effect of the present invention is: the present invention changes the mounting means of filtrate in traditional BAF filtrate technology: traditional BAF filtrate is installed as " fixed bed " formula and installs; The present invention utilizes " generalized flow figureization theory " to instruct design and has developed " fluidized bed-mobile bed "; Filter bed bottom filtrate; The filtrate case of landing to cylindrical shell bottom; In the filtrate case filtrate through the filtrate lifter be promoted to carry out in the filtering material cleaning device that filtrate cleans and Separation of Solid and Liquid after, clean filtrate falls into filter bed top to the cylindrical shell again, constitutes the continuous wash cycles of filtrate thus; Therefore the present invention has realized the continuous backwash of filtrate, need not to shut down to carry out backwash, and this biofilter can move continuously, and is easy to operate, saves energy consumption, and treatment effeciency is high; In addition, the present invention can realize removing ss suspended solid, remove BOD, ammonia nitrogen and biological denitrificaion function in the advantage of one, and effluent quality is excellent.
Description of drawings
In order to make the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is made further detailed description below, wherein:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation in cross section, filtering material cleaning device upper end;
Fig. 3 is the structural representation of water inlet water distribution system;
Fig. 4 is the structural representation of aerating system.
The specific embodiment
Below will carry out detailed description to the preferred embodiments of the present invention with reference to accompanying drawing.
Fig. 1 is a structural representation of the present invention; As shown in the figure; Continuous backwash biological aerated filter device of the present invention; Comprise cylindrical shell 1, stretch into the water inlet water distribution system 2 that is used to feed former water in the cylindrical shell 1, stretch into the aerating system 3 that is used for bubbling air in the cylindrical shell 1, be arranged at be used to discharge the clear water exhaust system 4 of handling the back clear water on the cylindrical shell 1, be arranged at filtrate case 5 that cylindrical shell 1 bottom is communicated with cylindrical shell 1 inner chamber, filtrate lifter 7 that being used to of being arranged at that cylindrical shell 1 top is communicated with cylindrical shell 1 inner chamber cleans the filtering material cleaning device 6 of filtrate and be used to promote filtrate; Be equipped with in the said filtrate case 5 and be used to hold back suspended solid and the filtrate that supplies biofilm development, said filtrate case 5, filtrate lifter 7 and filtering material cleaning device 6 are communicated with through filtrate riser 8 successively; Said cylindrical shell 1 also is provided with support 9 and supports.Said filtrate is selected ceramic grain filter for use, utilizes in the sewage organic pollution as food, and microorganism can form biomembrane in ceramic grain filter superficial growth and breeding, and the required oxygen of biomembrane normal growth provides (among the figure shown in the arrow) by aerating system 3; After former water got into cylindrical shell 1 through water inlet water distribution system 2, the comprehensive function of stopping through microbial degradation and media filtration purified water, and the clear water after the whole apparatus processes is discharged through clear water exhaust system 4; Filter bed bottom filtrate; The filtrate case 5 of landing to cylindrical shell 1 bottom; In the filtrate case 5 filtrates through filtrate lifter 7 be promoted to carry out in the filtering material cleaning device 6 that filtrate cleans and Separation of Solid and Liquid after, clean filtrate falls into filter bed top to the cylindrical shell 1 again, constitutes the continuous wash cycles of filtrate thus.
As further improvement of the present invention; Said filtering material cleaning device 6 is upper coarse and lower fine conically shaped, and its upper end is communicated with muddy water delivery pipe 10 and said filtrate riser 8 respectively, and the bottom has the mouth that supplies filtrate to flow out; Said filtrate riser 8 is tangent, as shown in Figure 2 with said conically shaped; The detailed process that said filtering material cleaning device 6 carries out filtrate cleaning and Separation of Solid and Liquid is: filtrate lifter 7 is with the filtrate in the filtrate case 5 and the mixed liquor gas lifting of sewage; Form eddy flow after in the filtering material cleaning device 6 at inflow cylindrical shell top, filtrate riser 8 tangentials; Under action of centrifugal force; Big, the stressed big filtering material particle of density is thrown to the conically shaped sidewall, and under tail water promotion and gravity effect, glides along the conically shaped sidewall, is back to the filter bed upper strata at the awl end; The awl bottom water flow forms the secondary eddy current under the acting in opposition of awl wall, after overflow pipe 6a gets into overflow cylinder 6b, discharge from muddy water delivery pipe 10.
As above-mentioned improved further improvement again, have the sieve aperture (in figure do not draw) of aperture on the said conically shaped sidewall less than particle diameter of filter medium; The purpose that sieve aperture is set is to introduce clear water, strengthen cleaning action, and screen-aperture can stop effectively filtrate to run off less than particle diameter of filter medium.
As another kind of improvement the of the present invention, said filtrate lifter 7 is for using the lifting device of compressed air (among the figure shown in the arrow) as power source; Certainly, also can adopt other power source.
As another kind of improvement the of the present invention, said filtrate riser 8 is transparent plastic conduit, and its part is positioned at the cylindrical shell outside; Can realize that the Real Time Observation filtrate promotes situation, filtrate lifting capacity and filtrate hoisting velocity can change through the compressed-air actuated tolerance of injecting regulates.
As another kind of improvement the of the present invention, be communicated with the filtrate demoulding device 11 of inner chamber buckle toothing between said filtrate lifter 7 and the said filtering material cleaning device 6; Turbulent flow in the filtrate riser 8 has unloaded some aging biomembranes from filtrate, and these aging biomembranes are detained by the hook of filtrate demoulding device 11 thorn structure at the filtrate wash phase and separate, and flow out through muddy water delivery pipe 10.
As another kind of improvement the of the present invention, said cylindrical shell 1 top is cylinder, and the bottom is a reverse taper, is provided with the periodically vibration air bag 12 that is used to compress filtrate of breathing in the said reverse taper; Filtrate need pass through the filtrate case 5 of passage landing to cylindrical shell 1 bottom of the inclined plane formation of vibrating air bag 12 and reverse taper; Therefore; Through injecting and discharge compressed air (shown in the figure arrow) fast to vibration air bag 12; Realize vibration air bag 12 periodic compression and expansion, make filtrate periodically be in compression and swelling state, thereby can prevent effectively that filtrate from hardening.
As another kind of improvement the of the present invention; Said water inlet water distribution system 2 comprises distribution main 2a and the radially-arranged range pipe 2b (as shown in Figure 3) in cylindrical shell 1 that is communicated with distribution main 2a; Said range pipe 2b is positioned at cylindrical shell 1 bottom; Its tube wall has apopore downwards, and said clear water exhaust system 4 is positioned at the cylindrical shell top; Said apopore is preferably the downward miter angle in tube wall both sides and offers; After former water flows out from apopore; To pass filter material layer to up flow type; In the process at upper reaches, effects such as the physical absorption of the polluter in the middle of the former water through the ceramic grain filter filtering layer, biodegradation are purified, and through clear water exhaust system 4 discharges at cylindrical shell 1 top; Realized upwards flowing the purpose of uniform water distribution.
As above-mentioned improved further improvement again, said distribution main 2a also is communicated with wash tub pipe 2c, and the termination of said range pipe 2b is stretched out cylindrical shell 1 and flushing valve 2d is installed; Under the situation that sparge pipe takes place to stop up, can close the valve on the distribution main 2a, open valve and flushing valve 2d on the wash tub pipe 2c, sparge pipe is cleaned.
As another kind of improvement the of the present invention; The radially-arranged aeration arm 3b (as shown in Figure 4) in cylindrical shell 1 that said aerating system 3 comprises aeration house steward 3a and is communicated with aeration house steward 3a; Said aeration arm 3b is positioned at cylindrical shell 1 middle part; Its tube wall upwards has solarization air cap, and said biofilter comprises that also the nitrification liquid with cylindrical shell 1 top is back to return-flow system 13 in the nitrification liquid of cylindrical shell 1 bottom; Said solarization air cap is preferably the tube wall both sides miter angle that makes progress and offers, and the height of aeration arm 3b is preferably adjustable, with the various working conditions of flexible adaptation; The aeration arm 3b that upwards has solarization air cap is set at cylindrical shell 1 middle part; Thereby make cylindrical shell 1 top form aerobic environment; Anaerobic environment is formed at the bottom, through return-flow system in the nitrification liquid 13 nitrification liquid on top is back to cylindrical shell 1 bottom again, can realize the purpose of biological denitrificaion; Therefore, when the present invention can realize removing SS, pollutants such as the BOD in the waste water, ammonia nitrogen are transformed removal, thereby further purify water.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although through invention has been described with reference to the preferred embodiments of the present invention; But those of ordinary skill in the art should be appreciated that and can make various changes to it in form with on the details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (7)
1. continuous backwash biological aerated filter device; It is characterized in that: comprise cylindrical shell (1), stretch into the water inlet water distribution system (2) that is used to feed former water in the cylindrical shell (1), stretch into the aerating system (3) that is used for bubbling air in the cylindrical shell (1), be arranged at and be used to discharge the clear water exhaust system (4) of handling the back clear water on the cylindrical shell (1), be arranged at filtrate case (5) that cylindrical shell (1) bottom is communicated with cylindrical shell (1) inner chamber, be arranged at filtering material cleaning device that is used to clean filtrate (6) that cylindrical shell (1) top is communicated with cylindrical shell (1) inner chamber and the filtrate lifter (7) that is used to promote filtrate; The filtrate that is used to hold back suspended solid and confession biofilm development is housed in the said filtrate case (5), and said filtrate case (5), filtrate lifter (7) and filtering material cleaning device (6) are communicated with through filtrate riser (8) successively; Be communicated with the filtrate demoulding device (11) of inner chamber buckle toothing between said filtrate lifter (7) and the said filtering material cleaning device (6);
Said filtering material cleaning device (6) is upper coarse and lower fine conically shaped, and its upper end is communicated with muddy water delivery pipe (10) and said filtrate riser (8) respectively, and the bottom has the mouth that supplies filtrate to flow out, and said filtrate riser (8) is tangent with said conically shaped;
The radially-arranged range pipe (2b) in cylindrical shell (1) that said water inlet water distribution system (2) comprises distribution main (2a) and is communicated with distribution main (2a); Said range pipe (2b) is positioned at cylindrical shell (1) bottom; Its tube wall has apopore downwards, and said clear water exhaust system (4) is positioned at cylindrical shell (1) top;
The radially-arranged aeration arm (3b) in cylindrical shell (1) that said aerating system (3) comprises aeration house steward (3a) and is communicated with aeration house steward (3a), said aeration arm (3b) are positioned at cylindrical shell (1) middle part, and its tube wall upwards has solarization air cap.
2. continuous backwash biological aerated filter device according to claim 1 is characterized in that: have the sieve aperture of aperture less than particle diameter of filter medium on the said conically shaped sidewall.
3. continuous backwash biological aerated filter device according to claim 1 is characterized in that: said filtrate lifter (7) is for using the lifting device of compressed air as power source.
4. continuous backwash biological aerated filter device according to claim 1, it is characterized in that: said filtrate riser (8) is transparent plastic conduit, and its part is positioned at cylindrical shell (1) outside.
5. continuous backwash biological aerated filter device according to claim 1 is characterized in that: said cylindrical shell (1) top is cylinder, and the bottom is a reverse taper, is provided with the periodically vibration air bag (12) that is used to compress filtrate of breathing in the said reverse taper.
6. continuous backwash biological aerated filter device according to claim 1, it is characterized in that: said distribution main (2a) also is communicated with wash tub pipe (2c), and the termination of said range pipe (2b) is stretched out cylindrical shell (1) and flushing valve (2d) is installed.
7. continuous backwash biological aerated filter device according to claim 1 is characterized in that: said biofilter comprises that also the nitrification liquid with cylindrical shell (1) top is back to the interior return-flow system (13) of nitrification liquid of cylindrical shell (1) bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106005797A CN102001751B (en) | 2010-12-22 | 2010-12-22 | Continuous backwashing aeration biofilter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106005797A CN102001751B (en) | 2010-12-22 | 2010-12-22 | Continuous backwashing aeration biofilter |
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| CN102001751A CN102001751A (en) | 2011-04-06 |
| CN102001751B true CN102001751B (en) | 2012-07-25 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583626B (en) * | 2012-02-24 | 2014-02-26 | 重庆康达环保产业（集团）有限公司 | Large-scale industry advanced treatment method of difficult biodegradation industrial waste water and system thereof |
| CN104129843B (en) * | 2014-07-30 | 2016-03-09 | 山东豪通环保科技有限公司 | A kind of waste disposal plant and operating procedure thereof adopting continous way biomembrance process |
| CN105016462B (en) * | 2015-07-07 | 2017-05-03 | 中国石油天然气集团公司 | Biological aerated filter for automatically and continuously cleaning filter materials |
| CN106517655A (en) * | 2016-11-21 | 2017-03-22 | 安徽清普环保装备有限公司 | Continuous running type reverse flow biological aerated filter sewage treatment system |
| CN106396081A (en) * | 2016-11-21 | 2017-02-15 | 安徽清普环保装备有限公司 | Continuous operation type reverse flow biological aerated filter |
| CN107711683A (en) * | 2017-11-13 | 2018-02-23 | 山东中天羲和新能源技术股份有限公司 | A kind of aquaculture carbon dioxide removal device |
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Family Cites Families (2)
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| JPH10337585A (en) * | 1997-06-05 | 1998-12-22 | Nippon Steel Corp | Method for back wash of surfacing filter medium |
| JP4892393B2 (en) * | 2006-04-21 | 2012-03-07 | 前澤工業株式会社 | Filtration device |
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|---|---|---|---|---|
| CN2843575Y (en) * | 2004-07-20 | 2006-12-06 | 王克春 | Back-flushing blow-down device of radial-flow filter net and filter material for filter |
| CN201211446Y (en) * | 2008-03-28 | 2009-03-25 | 河北永益生态环境工程有限公司 | Water treatment device with continuous filtration and continuous backflushing |
| CN101708387A (en) * | 2009-12-25 | 2010-05-19 | 南京中电联环保工程有限公司 | Method for dynamically backwashing dirt separator by using continuous flow |
Non-Patent Citations (2)
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| JP特开2007-307549A 2007.11.29 |
| JP特开平10-337585A 1998.12.22 |
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