CN108128886B - Membrane filtration and aeration integrated device - Google Patents
Membrane filtration and aeration integrated device Download PDFInfo
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- CN108128886B CN108128886B CN201810028212.9A CN201810028212A CN108128886B CN 108128886 B CN108128886 B CN 108128886B CN 201810028212 A CN201810028212 A CN 201810028212A CN 108128886 B CN108128886 B CN 108128886B
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- membrane
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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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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- Engineering & Computer Science (AREA)
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- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a membrane filtration and aeration integrated device, which comprises an upper cavity, a lower cavity and a cylindrical filter membrane hermetically connected between the upper cavity and the lower cavity; a support rod is connected between the center of the upper cavity and the center of the lower cavity, a plurality of water channel division plates are distributed around the support rod, one side of each water channel division plate is connected with the support rod, the other side of each water channel division plate is connected with two air channel division plates, and the two air channel division plates are contacted with the filter membrane to form an air inlet channel of the sector; any two adjacent water channel partition plates, two air inlet channels and the filter membrane between the two air inlet channels form a drainage channel together; the upper cavity is connected with a water outlet pipe, and the lower cavity is connected with an air inlet pipe; the invention integrates aeration and filtration, realizes the scouring of scale pollutants on the surface of the outer membrane while degrading water pollutants, and keeps the stable and efficient oxygen transfer efficiency of the flux of the water outlet membrane.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a membrane filtration and aeration integrated device.
Background
Along with the gradual perfection of municipal drainage pipe networks, the sewage treatment rate is continuously improved, and simultaneously, the effluent standard after sewage treatment is also continuously strict, and the membrane filtration process is rapidly developed and widely used due to the high-quality effluent quality under the situation. Compared with the conventional activated sludge process, the membrane filtration process has the integrated functions of filtration and biochemistry, so that a precipitation section required in the conventional process is omitted, and the occupied area is reduced. In addition, the membrane process has a filtering function, and high-quality effluent quality is realized.
However, in the actual operation process, the process mainly utilizes the self micro-pore structure to play a filtering function, the blockage problem caused by membrane pollution is gradually obvious along with the continuous operation of the operation time, particularly the biological scaling problem, and the cleaning is difficult, the scaling problem not only influences the water treatment amount, but also gradually increases the energy consumption of the system, and certain influence is caused on the normal operation of the system and the stable standard reaching of the outlet water.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an integrated device integrating membrane filtration and aeration, which is based on a membrane filtration technology, integrates aeration and filtration into a whole and can fully utilize the special performance of a membrane to realize high-efficiency oxygen mass transfer and high-quality effluent quality.
Therefore, the invention adopts the following scheme:
a membrane filtration and aeration integrated device comprises an upper cavity, a lower cavity and a cylindrical filter membrane hermetically connected between the upper cavity and the lower cavity; a support rod is connected between the center of the upper cavity and the center of the lower cavity, a plurality of water channel division plates are distributed around the support rod, one side of each water channel division plate is connected with the support rod, the other side of each water channel division plate is connected with two air passage division plates, and the two air passage division plates are contacted with the filter membrane to form an air inlet channel of the sector; any two adjacent water channel partition plates, two air inlet channels and the filter membrane between the two air inlet channels form a drainage channel together; the upper cavity is connected with a water outlet pipe, the lower cavity is connected with an air inlet pipe, the upper end of the air inlet channel is connected and sealed with the upper cavity, and the lower end of the air inlet channel is communicated with the interior of the lower cavity; the upper end of the drainage channel is communicated with the interior of the upper cavity, and the lower end of the drainage channel is connected and sealed with the lower cavity.
Furthermore, the upper cavity and the lower cavity are of disc structures, and two ends of the filter membrane are respectively connected around the circumferences of the upper cavity and the lower cavity in a sealing manner.
Furthermore, six water channel division plates are distributed around the support rod, and the included angle between any two adjacent water channel division plates is 60 degrees.
Further, the filter membrane is a microfiltration membrane or an ultrafiltration membrane.
The invention has the following advantages: the invention is based on the membrane filtration technology, integrates aeration and filtration, gas enters the gas inlet channel from the lower cavity and diffuses from the inner side to the outer side of the membrane, and the disturbance of the gas on the membrane filter layer realizes the washing of scaling pollutants on the surface of the outer membrane while degrading water pollutants, thereby maintaining the stable and efficient oxygen transfer efficiency of the water outlet membrane flux; the sewage can be sucked by a suction pump connected with a water outlet pipe and flows from the outer side to the inner side of the membrane, so that the outlet water is strictly filtered. When in actual use, a plurality of devices can be simultaneously placed in the sewage treatment biochemical pool in parallel, and the upper cavity and the lower cavity of each device are respectively connected with the drainage system and the air supply system, so that the modularized combination is realized, and the optimal matching of energy consumption is realized.
In conclusion, the invention fully utilizes the structural characteristics of the membrane to realize high-efficiency oxygen mass transfer efficiency and high-quality effluent quality, and simultaneously adopts the unique design of integrating aeration and filtration to flush the scale pollution on the surface of the membrane in real time, thereby maintaining the stability of high effluent flux and oxygen transfer efficiency.
Drawings
The invention will be further described with reference to specific embodiments thereof, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along plane A-A of FIG. 1;
FIG. 3 is a schematic view of the combined use of the present invention;
wherein: 11-a suction pump; 12-a main water outlet pipe; 13-water outlet pipe; 2-a filter membrane; 21-a drainage channel; 22-an intake passage; 23-an oxygen diffusion film layer; 24-a membrane filtration layer; 25-a water channel partition plate; 26 an air passage partition plate; 27-an upper cavity; 28-lower chamber; 29-a support bar; 31-an aeration fan; 32-a main gas inlet pipe; 33-an air inlet pipe; 4-biochemical pool.
Detailed Description
Referring to fig. 1-2, the membrane filtration and aeration integrated apparatus includes an upper chamber 27, a lower chamber 28, and a cylindrical filter membrane 2 hermetically connected between the upper chamber 27 and the lower chamber 28. The upper cavity 27 and the lower cavity 28 are of disc structures, the filter membrane 2 is a microfiltration membrane or an ultrafiltration membrane, and two ends of the filter membrane 2 are respectively connected around the circumferences of the upper cavity 27 and the lower cavity 28 in a sealing manner.
A support rod 29 is connected between the center of the upper cavity 27 and the center of the lower cavity 28, six water channel separation plates 25 are distributed around the support rod 29, one side of each water channel separation plate 25 is connected with the support rod 29, the other side of each water channel separation plate 25 is connected with two air passage separation plates 26, and the included angle between any two adjacent water channel separation plates 25 is 60 degrees (the number of the water channel separation plates 25 can be adjusted according to the water quality requirement of a water body to be treated, and the number of the corresponding air inlet channels 22 can be changed accordingly). The two air passage partition plates 26 are contacted with the filter membrane 2 to form a fan-shaped air inlet channel 22, and the surface of the filter membrane 2 of the air inlet channel 22 is the oxygen supply diffusion membrane layer 23 for gas to pass through.
The two water channel partition plates 25, the two air inlet channels 22 and the filter membrane 2 between the two air inlet channels 22 which are adjacent form a drainage channel 21; the surface of the filter membrane 2 of the drainage channel 21 is the membrane filtration layer 24 for passing water.
Because the membrane filtering layer 24, the oxygen diffusion membrane layer 23 and the air passage partition plate 26 are in a non-fixed structure (only play a role of contact support and are not connected), the flushing of scaling pollutants on the outer layer of the membrane filtering can be realized through gas disturbance.
The upper cavity 27 is connected with the water outlet pipe 13, the lower cavity 28 is connected with the air inlet pipe 33, the upper end of the air inlet channel 22 is connected and sealed with the upper cavity 27, and the lower end of the air inlet channel 22 is communicated with the interior of the lower cavity 28; the upper end of the drainage channel 21 is communicated with the interior of the upper cavity 27, and the lower end of the drainage channel 21 is connected and sealed with the lower cavity 28.
The using method of the invention is as follows:
taking a certain sewage treatment biochemical pool 4 as an example, six devices are arranged in the sewage treatment biochemical pool 4 in parallel, an aeration fan 31 with corresponding power is configured to supply air to the devices, the air is uniformly distributed into the devices through an air inlet main pipe 32 and an air inlet pipe 33, the air enters from a lower cavity 27 and then enters into each air inlet channel 22, the air is aerated into the water body through the oxygen diffusion membrane layer 23 transversely in the fan-shaped air inlet channel 22 formed by the air passage partition plate 26 and the oxygen diffusion membrane layer 23, and the specific surface area of the air entering into the water body under the action of the membrane is increased because the air continuously passes through the oxygen diffusion membrane layer 23, so that the oxygen transfer efficiency is effectively improved, and the degradation of organic matters in the sewage is accelerated.
Meanwhile, the gas generates weak vibration when passing through the oxygen diffusion membrane layer 23, and the air passage partition plate 26 is only contacted with the filter membrane 22 but not fixed, so that the biological scales of the membrane filter layers 24 of the adjacent drainage channels 21 are washed and fall off.
Meanwhile, the water purified by aeration in the sewage forms negative pressure in the drainage channel 29 under the action of the suction pump 11, the water body enters the drainage channel 21 through the membrane filter layer 24, the purified sewage is well separated from activated sludge after passing through the filter membrane 2, and the collected sewage is collected to the main water outlet pipe 12 by the water outlet pipes 13 and is discharged out of the system along with the suction pump 11, so that high-quality discharged water is obtained.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention is subject to the protection scope of the claims.
Claims (4)
1. The utility model provides a membrane filtration and aeration integral type device which characterized in that: comprises an upper cavity, a lower cavity and a cylindrical filter membrane hermetically connected between the upper cavity and the lower cavity; a support rod is connected between the center of the upper cavity and the center of the lower cavity, a plurality of water channel division plates are distributed around the support rod, one side of each water channel division plate is connected with the support rod, the other side of each water channel division plate is connected with two air passage division plates, and the two air passage division plates are contacted with the filter membrane to form an air inlet channel of the sector; any two adjacent water channel partition plates, two air inlet channels and the filter membrane between the two air inlet channels form a drainage channel together; the upper cavity is connected with a water outlet pipe, the lower cavity is connected with an air inlet pipe, the upper end of the air inlet channel is connected and sealed with the upper cavity, and the lower end of the air inlet channel is communicated with the interior of the lower cavity; the upper end of the drainage channel is communicated with the interior of the upper cavity, and the lower end of the drainage channel is connected and sealed with the lower cavity.
2. An integrated membrane filtration and aeration apparatus according to claim 1, wherein: the upper cavity and the lower cavity are of disc structures, and two ends of the filter membrane are respectively connected around the circumferences of the upper cavity and the lower cavity in a sealing mode.
3. An integrated membrane filtration and aeration apparatus according to claim 1, wherein: six water channel division plates are distributed around the supporting rod, and the included angle between any two adjacent water channel division plates is 60 degrees.
4. An integrated membrane filtration and aeration apparatus according to claim 1, wherein: the filter membrane is a microfiltration membrane or an ultrafiltration membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810028212.9A CN108128886B (en) | 2018-01-11 | 2018-01-11 | Membrane filtration and aeration integrated device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810028212.9A CN108128886B (en) | 2018-01-11 | 2018-01-11 | Membrane filtration and aeration integrated device |
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| Publication Number | Publication Date |
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| CN108128886A CN108128886A (en) | 2018-06-08 |
| CN108128886B true CN108128886B (en) | 2021-02-05 |
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| CN201810028212.9A Active CN108128886B (en) | 2018-01-11 | 2018-01-11 | Membrane filtration and aeration integrated device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109179888B (en) * | 2018-09-30 | 2021-10-22 | 浙江工商大学 | Wastewater treatment device and process of integrated ozone coupling membrane bioreactor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040064875A (en) * | 2003-01-10 | 2004-07-21 | 권인자 | Woven tubular fiber membrane module for waste water treatment system |
| CN1569682A (en) * | 2004-05-13 | 2005-01-26 | 大连理工大学 | Membrane aeration and membrane separation coupled sewage treatment device and method |
| CN101036858A (en) * | 2007-01-26 | 2007-09-19 | 天津膜天膜科技有限公司 | External-pressing film assembly with holes |
| CN101516474A (en) * | 2006-08-01 | 2009-08-26 | Otv股份有限公司 | Membrane reactor for the treatment of liquid effluents, comprising a membrane for diffusion of an oxidizing gas and a selective membrane, defining a reaction space between said membranes |
| CN203750420U (en) * | 2014-04-14 | 2014-08-06 | 窦玉凤 | Immersed type hollow fiber membrane module with integrated function of distributing air and discharging water at two ends |
-
2018
- 2018-01-11 CN CN201810028212.9A patent/CN108128886B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040064875A (en) * | 2003-01-10 | 2004-07-21 | 권인자 | Woven tubular fiber membrane module for waste water treatment system |
| CN1569682A (en) * | 2004-05-13 | 2005-01-26 | 大连理工大学 | Membrane aeration and membrane separation coupled sewage treatment device and method |
| CN101516474A (en) * | 2006-08-01 | 2009-08-26 | Otv股份有限公司 | Membrane reactor for the treatment of liquid effluents, comprising a membrane for diffusion of an oxidizing gas and a selective membrane, defining a reaction space between said membranes |
| CN101036858A (en) * | 2007-01-26 | 2007-09-19 | 天津膜天膜科技有限公司 | External-pressing film assembly with holes |
| CN203750420U (en) * | 2014-04-14 | 2014-08-06 | 窦玉凤 | Immersed type hollow fiber membrane module with integrated function of distributing air and discharging water at two ends |
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| CN108128886A (en) | 2018-06-08 |
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Address after: 230088 Third Floor of Zheng Building, Zhongke Power, No. 767 Mechatronics Industrial Park, Hefei High-tech Zone, Anhui Province Applicant after: Anhui Pan Lake Ecological Polytron Technologies Inc Address before: 230088 Third Floor of Zheng Building, Zhongke Dada, No. 767 Mechatronic Industrial Park, Anhui High-tech Zone Applicant before: Anhui Pan Lake Ecological Polytron Technologies Inc |
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