CN202440367U - Gas stripping continuous type sewage treatment device for biological aerated filter - Google Patents

Gas stripping continuous type sewage treatment device for biological aerated filter Download PDF

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Publication number
CN202440367U
CN202440367U CN2011205428760U CN201120542876U CN202440367U CN 202440367 U CN202440367 U CN 202440367U CN 2011205428760 U CN2011205428760 U CN 2011205428760U CN 201120542876 U CN201120542876 U CN 201120542876U CN 202440367 U CN202440367 U CN 202440367U
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China
Prior art keywords
biological filter
sewage
packing material
gas
biologic packing
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Expired - Fee Related
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CN2011205428760U
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Chinese (zh)
Inventor
陈卫国
张玉霞
周德鸿
陈超举
湛永航
朱锡海
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Sun Yat Sen University
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Sun Yat Sen University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

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Abstract

The utility model discloses a gas stripping continuous type sewage treatment device for a biological aerated filter, comprising a biological filter. A plurality of biological filler particles and a biological filler particle cleaning device are arranged in the biological filter, the biological filter is divided into a reaction zone and a cleaning zone; and the biological filler particle cleaning device is also provided with a recycle unit, and the biological filler particles circularly flow between the reaction zone and the cleaning zone of the biological filter by the recycle unit. The biological filler particle cleaning device is also provided with a foam extinguishing device which is used for eliminating foam generated in the biological filler particle cleaning process. The gas stripping continuous type sewage treatment device realizes the purpose of continuous sewage treatment of the biological filter by material stripping technology, material washing technology, uniform water and gas distribution technology and foam extinguishing technology of the biological filter.

Description

Gas is carried the continous way BAF device of disposing of sewage
Technical field
The utility model relates to sewage treatment area, is specifically related to the device that a kind of BAF method is disposed of sewage.
Background technology
The BAF technology is a kind of three-in-one novel sewage disposal technology of filtration, absorption and bio-oxidation that collects that grows up the America and Europe end of the eighties.It can play the effect of common aeration tank, second pond and sand filter simultaneously, has multiple functions such as removing SS, BOD, nitrated denitrogenation, and it is a kind of high-effect, low-cost and take up an area of little sewage disposal technology that this technology has been proved to be, and it has a extensive future.
Yet because BAF does not have the function of on-line cleaning filler grain, the filler grain very easily occurs and stop up, the open defect that sewage treating efficiency descends significantly finally occurs.Therefore, the device made from this principle of work must regularly carry out back flushing to BAF when disposing of sewage, make filler obtain cleaning, and recovers its dirty removal capacities, and this is that to keep the BAF function vital.If back flushing is insufficient, the filter tank cycle of operation will shorten; If back flushing is excessive, the microbe quantity quantity not sufficient, biochemical treatment usefulness descends, and effluent quality can variation.But owing to backwash mode, flushing cycle change because of sewage is different with backwash rate; Difficult control and grasp; How to make the filler grain in the device operational process, remain high biological activity; Become a great problem that this technical field is faced with, this has restricted applying of BAF technology.The contriver is on the original patent of invention of Zhongshan University " particle electrode catalyst filling of a kind of three-diemsnional electrode and preparation method thereof " basis (ZL200410077704.5); Developed novel biologic packing material grain; And through to (ZL200920263896.7) the technological bridge joint transformation on the basis of the original patent of invention of Zhongshan University " a kind of wastewater treatment equipment of on-line cleaning catalysis grain ", the new device that is applicable to that BAF is disposed of sewage has continuously been made in research.
The utility model content
The purpose of the utility model is the problem that overcomes above-mentioned BAF, provide a kind of have on-line cleaning filler grain function, can realize that gas that BAF is disposed of sewage continuously carries the continous way BAF device (BACR) of disposing of sewage.
The gas that the utility model provides is carried the continous way BAF device of disposing of sewage; Comprise the biological filter; There are a plurality of biologic packing material grains and biologic packing material grain washing unit in inside, biological filter, and biologic packing material grain washing unit is divided into the biological filter between biochemical reaction interval and cleaning area; Described biologic packing material grain washing unit also is provided with recycle unit; The biologic packing material grain is through the driving of recycle unit; Between between the biochemical reaction interval of biological filter and cleaning area, circulate; Described biologic packing material grain washing unit also is provided with foam and goes out except that cover, to eliminate the foam that in the process of cleaning the biologic packing material grain, produces.The consumption of biologic packing material grain and the mass ratio between the sewage are 1:2.
Biologic packing material grain washing unit comprises the diffuser that is positioned at the biological filter inner upper end, is provided with dividing plate in the diffuser, cleaning zone of enclosing in diffuser inside is divided into and peripheral blowdown zone.Cleaning the zone is the zone that the biologic packing material grain stops and is cleaned, and blanking port is arranged at its bottom, has made the reaction interval that can fall into the biological filter through the biologic packing material grain of cleaning again; The blowdown zone is the zone of arranging warp through the biodeterioration mud that cleaning spins off from the biologic packing material grain, and sewage draining exit is arranged at its bottom, and biodeterioration mud discharge biological filter is outside.
Biologic packing material grain washing unit also includes extraction pipe, and extraction pipe extends to the inner cleaning zone of said diffuser always from the bottom, biological filter.Extraction pipe also is connected with gas and carries device.The ejector nozzle that pressurized air is carried device through gas is injected extraction pipe; The dirty biologic packing material grain of bottom, catalysis pond is risen to the extraction pipe top exit; Material grain and water intense mixing in extraction pipe; The biologic packing material grain is once cleaned, and falls into diffuser then, and the biologic packing material grain that gets in the diffuser also can carry out the secondary cleaning process.The foam that in the process of cleaning the biologic packing material grain, produces is gone out except that covering the bubble that goes out by foam.The effect of bubble of going out is to go out effectively and removes the foam that produces because of aeration, makes it to come back in the water body, and from preventing that foam from overflowing outside the main equipment.
The gas that connects extraction pipe carry blanking port in device, extraction pipe, diffuser and the diffuser formed jointly in the biological filter recycle unit, make the biologic packing material grain between between reaction interval and cleaning area, circulate.
Because the density of biologic packing material grain is high, the density of biological sludge is lower, in order to make the separating of clean biologic packing material grain and mud; And effective discharge of mud; Dividing plate height in the diffuser is lower than the height of the peripheral board of diffuser, and after cleaning, the biologic packing material grain is sunken to the bottom of cleaning the zone; And then under action of gravity, come back in the body of pond from blanking port, biological sludge then floats on the water surface and gets into the blowdown zone.
In order to make the dirt in the blowdown zone to discharge effectively, the level attitude of sewage draining exit should be lower than the water level of reaction interval water body in the biological filter.Therefore, the upper end, biological filter is provided with water outlet, and this water outlet should be positioned on the level height that is higher than said diffuser sewage draining exit.Under the effect of waterhead, part cleaning water after treatment ejects the cleaning zone of diffuser with the wash-down water in the extraction pipe and suspended substance, gets into the blowdown zone, and then discharges from sewage draining exit.
The lower end, biological filter is provided with water-in, and waste water also has the aeration import through in the biological filter that enters here near it, be positioned at the water-in lower end.The bottom, biological filter is taper, and is provided with slag-drip opening.
The extraction pipe lower outside has the blanking baffle plate, extends to the below of water-in.The biologic packing material grain falls into Chi Tishi again from diffuser, receive the effect of blanking baffle plate and get back to the biologic packing material district equably, has also avoided biologic packing material because of in the cleaning process simultaneously, with water flows can the dense pool of access arrangement or exhalant region maybe.
In the process of disposing of sewage; Sewage is under the thrust of pump; Water-in by blanking baffle plate top gets into the biological filter; And mobile with the mode of upwelling to the water outlet direction, through the aeration inlet pipe bubbling air of blanking baffle plate top, make the organic pollutant in the sewage under microbial process, accomplish degradation process simultaneously.At last, after treatment sewage is discharged outside the biological filter through water outlet continuously.
Compared with prior art, the utlity model has following beneficial effect:
1. the utility model adopts gas to put forward mode, has both guaranteed the efficient stable property that BAF is disposed of sewage, and has realized on-line auto-cleaning filler grain and blowdown operation again, has guaranteed that device work is unimpeded continuously.
2. the utility model is simple in structure, and in addition technological bridge joint improves on the basis of original bacteria filter device, just can realize the dirt-removing functions of high-efficiency and continuous.
3. the utility model is put forward the material technology, is washed the purpose that material is technological, the water distribution uniformity gas distribution is technological and the ingenious design realization BAF method of the foam technology that goes out is disposed of sewage continuously through the biological filter.Overcome in the degradation process of biological filter, the biologic packing material grain is difficult to cause the not high defective of water treatment efficiency with the backwash mode removal because of the aged biological sludge.
Description of drawings
Fig. 1 carries the dispose of sewage structural representation of device of continous way BAF for gas;
Fig. 2 uses the on-the-spot dynamic test results of old biologic packing material Phenol-Containing Wastewater Treatment for old biological filter;
Fig. 3 uses old biologic packing material for the biological filter of the utility model and handles the on-the-spot dynamic test results that contains the phenol pollutent;
Fig. 4 handles the on-the-spot dynamic test results that contains the phenol pollutent for the biologic packing material that the utility model is used in the biological filter of the utility model;
The method synoptic diagram that Fig. 5 uses in the middle water reuse of industrial discharge water outlet for the biological filter of the utility model.
Embodiment
Embodiment 1
The structure of equipment and operation.
As shown in Figure 1; Biological filter 11 is supported by support 6; 11 bottoms, biological filter are slag-drip opening 7, and body inside, pond is covered with biologic packing material grain 3, and the biological filter inner upper end is provided with diffuser 13; Wherein being provided with cleaning zone and peripheral blowdown zone that dividing plate encloses in diffuser 13 inside are divided into, goes out with foam again and removes cover 1 and link to each other in the dividing plate upper end; Cleaning the bottom, zone has blanking port 2, and sewage draining exit 12 is arranged at bottom, blowdown zone.Extraction pipe 4 extends to the cleaning zone of said diffuser 13 inside always from the bottom, biological filter, extraction pipe 4 also is connected with gas and carries device 8.Extraction pipe 4 lower outside have blanking baffle plate 5.
The lower end, biological filter is provided with water-in 10, and water-in 10 lower ends are provided with aeration import 9.
The upper end, biological filter is provided with water outlet 14, and water outlet 14 is positioned on the level height of the sewage draining exit 12 that is higher than said diffuser 13.
During work; The ejector nozzle that pressurized air is carried device 8 through gas is injected extraction pipe 4; Dirty material at the bottom of 11 awls of biological filter is risen to extraction pipe 4 top exits, and biologic packing material grain 3 and water intense mixing are once cleaned in extraction pipe 4; Fall into diffuser 13 then, the biologic packing material grain 3 that gets in the diffuser 13 also can carry out the secondary cleaning process.The foam that in the process of cleaning biologic packing material grain 3, produces is gone out by foam and to remove cover 1 bubble that goes out.Under the effect of water outlet water level and the waterhead of carrying grain pipe 4 water outlet water levels, part cleaning water after treatment ejects diffuser 13 with wash-down water in the extraction pipe 4 and suspended substance, gets into to wash material sewage draining exit 12 discharge biological filters 11 in diffuser 13; The biologic packing material grain 3 that cleans up then comes back under action of gravity in the body of pond through the blanking port 2 of diffuser 13, the automatic unimpeded purpose of clean cycle of material grain when reaching work.In the process of disposing of sewage; Sewage is under the thrust of pump; Water-in 10 entering pond bodies 11 by blanking baffle plate 5 tops; And mobile with the mode of upwelling to the water outlet direction, through aeration inlet pipe 9 bubbling airs of blanking baffle plate 5 tops, make the organic pollutant in the sewage under microbial process, accomplish degradation process simultaneously.At last, after treatment sewage is by continuously through outside the water outlet 14 discharge pond bodies 11.
Embodiment 2
Counting by weight percentage, is matrix with 70% gac, with 16% red stone; With 14% calcium lignin sulphonate is that sticker adds water and mixes; Push pelletizing then, natural air drying again, at last 470 ℃ with the anoxybiotic condition under; Heating charing, activation 3 hours, processing particle diameter is the BACR special bio filler grain of 4 ~ 6mm.
Adopt the device of embodiment 1.Wherein the mass ratio relation between the sewage in biologic packing material grain and the device is 1:2.
Be the contrast experiment with the effect of old biologic packing material, old biological filter.Old biologic packing material is traditional active carbon filler, its biological filter also adopt traditional old biological filter (see Zhu Lei for details, Pei Yujiao. water technology; " 2 grades of bamboo charcoal BAF Research on Treatment of Domestic Wastewater "; 2011, Vol.37 No.6, PP76-76).In biological filter of the utility model and the old biological filter; Adopting under the biologic packing material grain and old biologic packing material of the utility model, the application result that removes the on-the-spot dynamic testing that contains the phenol pollutent (COD concentration between 75.0-88.0 mg/L, treatment capacity 200L/h) is shown in Fig. 2-4; The result shows; In the air water volume ratio is 5:1, and temperature is 25.0~36.0 ℃, and hydraulic load is 1.2m 3M -2H -1Condition under, when adopting old biologic packing material, it is higher that processing efficiency is compared than traditional biological filter in the BACR biological filter of the utility model; And in service at BACR, the biologic packing material grain of employing the utility model, its treatment effect further improves, and is higher by about 30% than the clearance of conventional apparatus.
Embodiment 3
Adopt as the device of embodiment 1 and as the biologic packing material grain of embodiment 2, wherein the biologic packing material grain with install in sewage between mass ratio concern to be 1:2.
The utility model is being handled on-the-spot (the former water COD120-160mg/L of sewage; Treatment capacity 200L/hr, steady running is about 1 year) application result shows the device (BACR) that adopts three grades of BAFs to dispose of sewage continuously; When being respectively 5:1,2:1,1:1 in one-level, secondary, three grades of air water volume ratios; Temperature is 15.0~36.0 ℃, and hydraulic detention time 3 hours, hydraulic load are 1.2m 3m -2h -1Condition under, the final clearance of water outlet COD, turbidity, ammonia nitrogen and TN is respectively and is higher than 85.0%, 90.0%, 80.0% and 40.0%, water outlet COD, turbidity and ammonia-nitrogen content all satisfy the first grade discharging B standard-required of GB/T18918-2002 regulation.
Embodiment 4
Adopt as the device of embodiment 1 and as the biologic packing material grain of embodiment 2, the method for employing Fig. 5 is carried out middle water Treatment for Reuse.The waste water station water outlet pumps into OFR earlier and carries out deep oxidation processing removal portion C OD, and water outlet is to get into the BACR biological filter from stream mode behind OFR, and the water outlet after the twice cell processes is handled gets into ultrafiltration (UF)+r-o-(RO) film system subsequently again.Can reach middle water reuse standard through the water outlet after the film system, be back to the workshop.
After the special-purpose electrocatalysis material grain of synthetic and biologic packing material grain be respectively charged into OFR and BACR, OFR was at voltage 45V, reaction times 30min; BACR is at air water volume ratio 1:1, and temperature is 25.0~36.0 ℃, and hydraulic load is 1.2m 3m -2h -1Condition under, (concentration of wastewater COD is 80-90mg/L, handles water yield 1.0m at the scene at unsaturated polyester resin factory waste water station final outflow water mouth place 3/ hr, steady running about March) application result shows that this Technology makes up common COD Wu Ranwuquchushuai>60%, handle waste water running cost per ton and have only one of power consumption, be generally 2000-3000W, replaced the method that the high multistage acticarbon of the big working cost of labour intensity is handled with the method for green economy, for middle water reuse provides reliable guidance.

Claims (9)

1. a gas is carried the continous way BAF device of disposing of sewage; It is characterized in that comprising biological filter (11); There are biologic packing material grain (3) and biologic packing material grain washing unit in inside, biological filter (11), and biologic packing material grain washing unit is divided into the biological filter between biochemical reaction interval and cleaning area; Described biologic packing material grain washing unit also is provided with recycle unit, and the biologic packing material grain is through the driving of recycle unit, between between the biochemical reaction interval of biological filter and cleaning area, circulates; Described biologic packing material grain washing unit also is provided with foam and goes out except that cover (1), to eliminate the foam that in the process of cleaning the biologic packing material grain, produces.
2. gas as claimed in claim 1 is carried the continous way BAF device of disposing of sewage; It is characterized in that described biologic packing material grain washing unit comprises the diffuser (13) that is positioned at biological filter (11) inner upper end; Be provided with cleaning zone and peripheral blowdown zone that dividing plate encloses in diffuser (13) inside is divided in the diffuser (13); Cleaning the bottom, zone has blanking port (2), and sewage draining exit (12) is arranged at bottom, blowdown zone.
3. gas as claimed in claim 1 is carried the continous way BAF device of disposing of sewage, and it is characterized in that the blanking port (2) that recycle unit is carried in device (8), extraction pipe (4), diffuser (13) and the diffuser (13) by the gas that connects extraction pipe (4) forms.
4. gas as claimed in claim 3 is carried the continous way BAF device of disposing of sewage, and it is characterized in that extraction pipe (4) extends to the inner cleaning zone of diffuser (13) always from the bottom, biological filter.
5. gas as claimed in claim 2 is carried the continous way BAF device of disposing of sewage, and it is characterized in that the lower end, biological filter is provided with water-in (10), and the upper end, biological filter is provided with water outlet (14); Water outlet (14) is positioned on the level height of the sewage draining exit (12) that is higher than diffuser (13).
6. gas as claimed in claim 5 is carried the continous way BAF device of disposing of sewage, and it is characterized in that extraction pipe (4) lower outside has blanking baffle plate (5), extends to the below of water-in (10).
7. gas as claimed in claim 5 is carried the continous way BAF device of disposing of sewage, and it is characterized in that inside, biological filter (11) also is provided with aeration import (9), is positioned at the lower end of water-in (10).
8. gas as claimed in claim 1 carries the continous way BAF device of disposing of sewage, and the bottom that it is characterized in that said biological filter (11) is taper, and is provided with slag-drip opening (7).
9. gas as claimed in claim 2 is carried the continous way BAF device of disposing of sewage, and it is characterized in that operational conditions is set to: the air water volume ratio is 5:1,2:1 or 1:1,15.0~36.0 ℃ of temperature, and hydraulic load is 1.2m 3m -2h -1
CN2011205428760U 2011-12-22 2011-12-22 Gas stripping continuous type sewage treatment device for biological aerated filter Expired - Fee Related CN202440367U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103265108A (en) * 2013-05-30 2013-08-28 浙江海洋学院 Factory breeding wastewater bio-pollution removal device
CN103613188A (en) * 2013-12-02 2014-03-05 上海理工大学 Outside cycle continuous biological aerated filter for composite fillers
CN105016462A (en) * 2015-07-07 2015-11-04 中国石油天然气集团公司 Biological aerated filter for automatically and continuously cleaning filter materials
CN106745657A (en) * 2017-01-20 2017-05-31 苏州新能环境技术股份有限公司 A kind of method and device of continuous moving bed catalytic oxidation treatment wastewater from chemical industry
CN107253770A (en) * 2017-08-22 2017-10-17 彭从文 Self-defoaming type sewage aeration pond
CN109160692A (en) * 2018-10-16 2019-01-08 中国水产科学研究院渔业机械仪器研究所 A kind of gas stripping type physicochemical processing unit for aquaculture
CN110127954A (en) * 2019-06-05 2019-08-16 哈尔滨工业大学 A kind of air pump driving sewage reactor and processing method based on process control

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103265108A (en) * 2013-05-30 2013-08-28 浙江海洋学院 Factory breeding wastewater bio-pollution removal device
CN103613188A (en) * 2013-12-02 2014-03-05 上海理工大学 Outside cycle continuous biological aerated filter for composite fillers
CN105016462A (en) * 2015-07-07 2015-11-04 中国石油天然气集团公司 Biological aerated filter for automatically and continuously cleaning filter materials
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
CN106745657A (en) * 2017-01-20 2017-05-31 苏州新能环境技术股份有限公司 A kind of method and device of continuous moving bed catalytic oxidation treatment wastewater from chemical industry
CN107253770A (en) * 2017-08-22 2017-10-17 彭从文 Self-defoaming type sewage aeration pond
CN109160692A (en) * 2018-10-16 2019-01-08 中国水产科学研究院渔业机械仪器研究所 A kind of gas stripping type physicochemical processing unit for aquaculture
CN109160692B (en) * 2018-10-16 2021-06-04 中国水产科学研究院渔业机械仪器研究所 Air-lift type physical and chemical treatment device for aquaculture
CN110127954A (en) * 2019-06-05 2019-08-16 哈尔滨工业大学 A kind of air pump driving sewage reactor and processing method based on process control

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Granted publication date: 20120919

Termination date: 20131222