CN104229980A - Combined biologic bed and sewage treatment method - Google Patents
Combined biologic bed and sewage treatment method Download PDFInfo
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- CN104229980A CN104229980A CN201410491674.6A CN201410491674A CN104229980A CN 104229980 A CN104229980 A CN 104229980A CN 201410491674 A CN201410491674 A CN 201410491674A CN 104229980 A CN104229980 A CN 104229980A
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- bed
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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
Abstract
The invention provides a combined biologic bed and a sewage treatment method. The biologic bed comprises a fluidized bed and a fixed bed, wherein the fluidized bed comprises a draft tube, a gas-liquid mixer and a suspended filler; a fixed filler is arranged inside the fixed bed; the fixed bed is arranged above the fluidized bed. Through a reasonable biologic bed structure and a reasonable treatment method, the filler in the fluidized bed is sufficiently and directionally fluidized and circulated along with a gas-liquid mixture, so that shedding of a biofilm due to fierce filler collision can be prevented; without leaving dead corners, pollutants in sewage are in full contact with the filler and are fully adsorbed and degraded by the biofilm on the filler; the sewage treated by the fluidized bed is then treated by the fixed bed, so that the sewage treatment efficiency is improved.
Description
Technical field
The present invention relates to technical field of sewage, be specifically related to a kind of combined biological bed and sewage water treatment method.
Background technology
Organic sewage bioremediation is different according to the state that microorganism is residing in water, can be divided into activated sludge process and biomembrance process.Wherein biomembrance process water treatment device is according to the filler kinestate added in system, can be roughly divided into three classes: fixed bed, expanded bed, fluidized-bed.
Fixed bed: in reaction unit in gas, liquid, solid three-phase, gas-liquid two-phase is kept in motion, and solid phase (bio-carrier) is that geo-stationary is motionless, typical reaction unit is as contact-oxidation pool; But due to filler transfixion, microbial film upgrades slow, and biological activity is poor, not resistance to overload shock, can only process comparatively underload organic waste water.
Expanded bed: in reaction unit in gas, liquid, solid three-phase, gas-liquid two-phase is kept in motion, and bio-carrier is in the stagnation point of fluidized state under current, air-flow acting in conjunction, remain relative static conditions, but gap becomes large between carrier, bed is in fluffy state, the current few application to the utmost of this device.
Fluidized-bed: be with gas-liquid or mechanical stirring for power, make a kind of reaction formation that the carrier filler in reaction unit is kept in motion all the time.Owing to will make the abundant fluidisation of carrier, do not stay dead angle, therefore will provide enough large power, this power causing the method to consume compared with contact oxidation method is large; In addition because the factors such as collision fierceness between sluicing, carrier easily make biofilm detachment, biomass reduces, and effluent quality is poor, affects treatment effect.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of combined biological bed and sewage water treatment method, by rational biological bed structure and treatment process, make the filler in fluidized-bed with the abundant directed fluidized circulation of gas-liquid mixture, prevent fierce collision between filler from making biofilm detachment; Do not stay dead angle, the pollutent in sewage fully contacted with filler, and filled on microorganism fully adsorb and degrade; Simultaneously the sewage crossed of fluidized bed processing is again through fixed bed process, improves the efficiency of sewage disposal.
The structure of combined biological bed of the present invention comprises fluidized-bed and fixed bed, and described fluidized-bed is located at below described fixed bed; Described fluidized-bed comprises outer cylinder body and is placed in the guide shell in outer cylinder body, the upper and lower both ends open of described guide shell, and sidewall is provided with multiple through hole, and fluidized-bed bottom surface is fixed on by support in lower end; Be provided with gas-water mixer below described guide shell, described gas-water mixer comprises one and is fixed on the cylindrical part of fluidized-bed bottom surface and is fixed on the first sieve plate of cylindrical part upper end; Described fluidized-bed interior lower end is provided with inlet pipe and water inlet pipe, the outlet side of described inlet pipe and the water side of water inlet pipe upwards bend be placed in described gas-water mixer cylindrical part in, the inlet mouth that the other end is arranged with outer cylinder body lower end respectively and water-in are connected; The floating stuffing through microorganism colonization process is provided with in described fluidized-bed; Described fixed bed is the columnar structured of upper and lower opening, and bottom is separated by the second sieve plate and fluidized-bed, and described fixed bed inside is provided with the fixing filler through microorganism colonization process, and sidewall upper is provided with water outlet.
As preferably, the floating stuffing base material in described fluidized-bed is mixed by polypropylene high molecular polymer, hydrophilic substance, biocompatible material, magnetic and is made, and can flow with liquid; The base material of the fixing filler in described fixed bed is volcanics or coke, not with liquid-flow in fixed bed.
As preferably, between described guide shell upper end and described second sieve plate, be provided with gap.
As preferably, the outlet side of described inlet pipe is higher than the water side of water inlet pipe.
As preferably, described fluidized-bed sidewall is also provided with multiple manhole and vision slit.
Sewage water treatment method step of the present invention is:
(1) in described fluidized-bed and fixed bed, respectively microorganism culturing, domestication and impact test are carried out to floating stuffing and fixing filler;
(2) open water inlet pipe, close inlet pipe, pending sewage is injected combined biological bed, make fixing filler in fixed bed by sewage submergence;
(3) inlet pipe is opened, gas and liquid are mixed in gas liquid mixer, due to the effect of pressure, gas-liquid mixture is gone out from the first sieve plate, sewage in guide shell and filler are flowed out from guide shell lateral through aperture and top end opening, bottom guide shell, form negative pressure simultaneously, thus make the mixture of a part of sewage and filler from guide shell external reflux to guide shell bottom, in flow process, the pollutent in sewage contacts with the microorganism on filler and is degraded by microorganisms; Another part enters fixed bed and by the gap between fixing filler, makes the microbiological deterioration that the pollutent left in sewage is fixed on filler further;
(4) sewage bottom guide shell is back to and filler is again sucked guide shell by from bottom under the effect of guide shell negative pressure, and upwards promote, thus directed circulation is formed inside and outside guide shell, make dirty pollutant in water in working cycle, be fluidized microbiological deterioration on an inner suspension filler, the microbiological deterioration that the part entering fixed bed is then fixed on filler;
(5) water body after fixed bed degradation treatment is flowed out by the water outlet on fixed bed.
Beneficial effect of the present invention is:
1, fluidized bed processing ability is strong, efficiency is high to adopt the combined biological bed of aforesaid way improvement not only to possess, the feature of resistance to overload shock, has also had that contact oxidation method effluent quality is good concurrently, an advantage of high-concentration biological amount in dam loss microorganism, keeping system;
2, by adopting guide cylinder type fluidized-bed (Internal Circulating Fluidized Bed) design, the object that the three-phase medium not only reaching fluidized-bed fully mixes, contact, it also avoid simultaneously and to collide the too fierce biofilm detachment that makes between carrier and cause the drawback that microorganism is run off and power consumption is large;
3, this kind of combined biological bed and sewage water treatment method can not only improve biological treatment efficiency, reduce hydraulic detention time, and decrease device volume and occupation of land, thus reach the efficient object of reducing investment outlay again of process.
Accompanying drawing explanation
Fig. 1 is internal structure schematic diagram of the present invention.
Fig. 2 is the schematic diagram that gas-liquid mixture and microbe stuffing flow in fluidized-bed.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, described combined biological bed comprises fluidized-bed 4 and fixed bed 6, and fluidized-bed 4 is located at below fixed bed 6; Fluidized-bed 4 comprises outer cylinder body and is placed in the guide shell 5 in outer cylinder body, guide shell about 5 both ends open, and sidewall is provided with multiple through hole 10, and fluidized-bed 4 bottom surface is fixed on by support 18 in lower end; Be provided with gas-water mixer below guide shell 5, gas-water mixer comprises one and is fixed on the cylindrical part 14 of fluidized-bed 4 bottom surface and is fixed on the first sieve plate 17 of cylindrical part upper end; Fluidized-bed 4 interior lower end is provided with inlet pipe 13 and water inlet pipe 19, the outlet side 15 of inlet pipe 13 and the water side 16 of water inlet pipe 19 upwards bend and are placed in the cylindrical part 14 of gas-water mixer, and the inlet mouth 12 that the other end is arranged with outer cylinder body lower end respectively and water-in 1 are connected; The floating stuffing 3 through microorganism colonization process is provided with in fluidized-bed 4; Fixed bed 6 is the columnar structured of upper and lower opening, and bottom is separated with fluidized-bed 4 by the second sieve plate 9, and fixed bed 6 inside is provided with the fixing filler 8 through microorganism colonization process, and fixed bed 6 sidewall upper is provided with water outlet 7.
In the present embodiment, the floating stuffing base material in fluidized-bed 4 is mixed by polypropylene high molecular polymer, hydrophilic substance, biocompatible material, magnetic and is made, and can flow with liquid; The base material of the fixing filler in fixed bed 6 is volcanics or coke, remains static in fixed bed 6.
In the present embodiment, gap is provided with between guide shell 5 upper end and the second sieve plate 9.The outlet side 15 of inlet pipe 13 is higher than the water side 16 of water inlet pipe 19.Fluidized-bed 4 sidewall is also provided with multiple manhole 2 and vision slit 11.
The method steps adopting above-mentioned combined biological bed to carry out sewage disposal is described in detail below in conjunction with Fig. 2:
(1) in described fluidized-bed and fixed bed, respectively microorganism culturing, domestication and impact test are carried out to floating stuffing and fixing filler;
(2) open water inlet pipe, close inlet pipe, pending sewage is injected combined biological bed, make fixing filler in fixed bed by sewage submergence;
(3) inlet pipe is opened, gas and liquid are mixed in gas liquid mixer, due to the effect of pressure, gas-liquid mixture is gone out from the first sieve plate, sewage in guide shell and filler are flowed out from guide shell lateral through aperture and top end opening, bottom guide shell, form negative pressure simultaneously, thus make the mixture of a part of sewage and filler from guide shell external reflux to guide shell bottom, in flow process, the pollutent in sewage contacts with the microorganism on filler and is degraded by microorganisms; Another part enters fixed bed and by the gap between fixing filler, makes the microbiological deterioration that the pollutent left in sewage is fixed on filler further;
(4) sewage bottom guide shell is back to and filler is again sucked guide shell by from bottom under the effect of guide shell negative pressure, and upwards promote, thus directed circulation is formed inside and outside guide shell, make dirty pollutant in water in working cycle, be fluidized microbiological deterioration on an inner suspension filler, the microbiological deterioration that the part entering fixed bed is then fixed on filler;
(5) water body after fixed bed degradation treatment is flowed out by the water outlet on fixed bed.
In the present embodiment, the filler in fluidized-bed is floating stuffing, can flow with liquid circulation; Inner guide shell and gas liquid mixer is located at owing to adding on the basis of conventional fluidization bed, enable the liquid in fluidized-bed and filler according to specific stream as shown in Figure 2 to circulating, liquid and filler is made to do random mixed flow compared to adopting stirring-type power in conventional fluidization bed, this directed circulation had both effectively reduced the hybrid power in fluidized-bed, avoid simultaneously and collide too fierceness between carrier and cause microorganism to be run off, therefore also just effectively improve the efficiency of microbiological deterioration pollutent.
In the present embodiment, the multiple-stage treatment mode adopting part fixed bed being located at the water body above fluidized-bed, fluidized bed processing being crossed to enter fixed bed continuation process effectively improves the effect of sewage disposal, compared to by fluidized-bed with fixed bed is separated has saved floor space and space, reduce use cost.
Claims (6)
1. a combined biological bed, is characterized in that: comprise fluidized-bed and fixed bed, and described fluidized-bed is located at below described fixed bed; Described fluidized-bed comprises outer cylinder body and is placed in the guide shell in outer cylinder body, the upper and lower both ends open of described guide shell, and sidewall is provided with multiple through hole, and fluidized-bed bottom surface is fixed on by support in lower end; Be provided with gas-water mixer below described guide shell, described gas-water mixer comprises one and is fixed on the cylindrical part of fluidized-bed bottom surface and is fixed on the first sieve plate of cylindrical part upper end; Described fluidized-bed interior lower end is provided with inlet pipe and water inlet pipe, the outlet side of described inlet pipe and the water side of water inlet pipe upwards bend be placed in described gas-water mixer cylindrical part in, the inlet mouth that the other end is arranged with outer cylinder body lower end respectively and water-in are connected; The floating stuffing through microorganism colonization process is provided with in described fluidized-bed; Described fixed bed is the columnar structured of upper and lower opening, and bottom is separated by the second sieve plate and fluidized-bed, and described fixed bed inside is provided with the fixing filler through microorganism colonization process, and sidewall upper is provided with water outlet.
2. a kind of combined biological bed according to claim 1, is characterized in that: the floating stuffing base material in described fluidized-bed is mixed by polypropylene high molecular polymer, hydrophilic substance, biocompatible material, magnetic and made, and can flow with liquid; The base material of the fixing filler in described fixed bed is volcanics or coke, not with liquid-flow in fixed bed.
3. a kind of combined biological bed according to claim 1, is characterized in that: be provided with gap between described guide shell upper end and described second sieve plate.
4. a kind of combined biological bed according to claim 1, is characterized in that: the outlet side of described inlet pipe is higher than the water side of water inlet pipe.
5. a kind of combined biological bed according to claim 1, is characterized in that: described fluidized-bed sidewall is also provided with multiple manhole and vision slit.
6. application rights requires that the combined biological bed in 1 to 5 described in any one carries out a method for sewage disposal, it is characterized in that: described sewage water treatment method comprises the steps:
(1) in described fluidized-bed and fixed bed, respectively microorganism culturing, domestication and impact test are carried out to floating stuffing and fixing filler;
(2) open water inlet pipe, close inlet pipe, pending sewage is injected combined biological bed, make fixing filler in fixed bed by sewage submergence;
(3) inlet pipe is opened, gas and liquid are mixed in gas liquid mixer, due to the effect of pressure, gas-liquid mixture is gone out from the first sieve plate, sewage in guide shell and filler are flowed out from guide shell lateral through aperture and top end opening, bottom guide shell, form negative pressure simultaneously, thus make the mixture of a part of sewage and filler from guide shell external reflux to guide shell bottom, in flow process, the pollutent in sewage contacts with the microorganism on filler and is degraded by microorganisms; Another part enters fixed bed and by the gap between fixing filler, makes the microbiological deterioration that the pollutent left in sewage is fixed on filler further;
(4) sewage bottom guide shell is back to and filler is again sucked guide shell by from bottom under the effect of guide shell negative pressure, and upwards promote, thus directed circulation is formed inside and outside guide shell, make dirty pollutant in water in working cycle, be fluidized microbiological deterioration on an inner suspension filler, the microbiological deterioration that the part entering fixed bed is then fixed on filler;
(5) water body after fixed bed degradation treatment is flowed out by the water outlet on fixed bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410491674.6A CN104229980B (en) | 2014-09-23 | 2014-09-23 | A kind of sewage water treatment method using combined biological bed |
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| CN201410491674.6A CN104229980B (en) | 2014-09-23 | 2014-09-23 | A kind of sewage water treatment method using combined biological bed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430836A (en) * | 2016-11-08 | 2017-02-22 | 中国水产科学研究院渔业机械仪器研究所 | Integrated sewage purifying system for aquaculture and purifying method |
| CN114162957A (en) * | 2021-11-17 | 2022-03-11 | 江苏裕隆环保有限公司 | Novel water interception system is crossed to MBBR technology |
| CN114230009A (en) * | 2021-12-17 | 2022-03-25 | 中煤科工集团杭州研究院有限公司 | Domestic sewage composite denitrification device and method |
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| CN114162957A (en) * | 2021-11-17 | 2022-03-11 | 江苏裕隆环保有限公司 | Novel water interception system is crossed to MBBR technology |
| CN114230009A (en) * | 2021-12-17 | 2022-03-25 | 中煤科工集团杭州研究院有限公司 | Domestic sewage composite denitrification device and method |
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| CN104229980B (en) | 2015-11-25 |
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Effective date of registration: 20180607 Address after: 473400 the southern section of Wenfeng Road, Tanghe industrial agglomeration area, Nanyang, Henan Patentee after: Nanyang Hui Yuan Environmental Protection Technology Co., Ltd. Address before: 430000 No. 204, 2 Warm court, Wuchang District, Wuhan, Hubei. Patentee before: Wang Wei |
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Address after: 473400 the southern section of Wenfeng Road, Tanghe industrial agglomeration area, Nanyang, Henan Patentee after: Henan Huisiyuan Environmental Protection Technology Co., Ltd. Address before: 473400 the southern section of Wenfeng Road, Tanghe industrial agglomeration area, Nanyang, Henan Patentee before: Nanyang Hui Yuan Environmental Protection Technology Co., Ltd. |
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