CN113772816A - Membrane bioreaction experimental device for waste membrane aeration membrane - Google Patents
Membrane bioreaction experimental device for waste membrane aeration membrane Download PDFInfo
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- CN113772816A CN113772816A CN202111041055.3A CN202111041055A CN113772816A CN 113772816 A CN113772816 A CN 113772816A CN 202111041055 A CN202111041055 A CN 202111041055A CN 113772816 A CN113772816 A CN 113772816A
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- membrane
- waste
- aeration
- hollow fiber
- gas
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to the technical field of sewage and wastewater treatment by a biological method, and discloses a membrane biological reaction experimental device for waste membrane fiber aeration, which comprises an air supply system and a water inlet and outlet circulating system; the gas supply system consists of a vacuum pump and a gas flowmeter; the vacuum pump leads the gas of the microorganism growth matrix into the hollow fiber membrane inner core; the water inlet and outlet circulating system is composed of a circulating pump and a water storage device. The invention has high oxygen utilization efficiency, does not need an external carbon source, effectively saves energy and is suitable for industrial popularization.
Description
Technical Field
The invention belongs to the technical field of sewage and wastewater treatment by a biological method, and relates to a membrane biological reaction experimental device for waste membrane fiber aeration.
Background
With the wider application of the membrane filtration technology in the field of water treatment, the waste membrane filaments become a problem which needs to be solved urgently at the present stage. At present, the waste film yarn is used in a sewage pretreatment process, geotextiles in a garden, reprocessing creation, and the like. The waste membrane filament aeration membrane bioreactor is constructed by modifying waste membrane filaments, constructing a three-dimensional structure and the like
(MABR) and develops a bioreactor for treating sewage and wastewater, so that the resource recycling process is realized, the economic benefit is improved, and a solid foundation is provided for the future industrial development.
The invention combines the hollow fiber membrane aeration and the biomembrane method, utilizes the hollow fiber membrane to provide a growth surface for the biomembrane with the function of degrading pollutants, and simultaneously introduces gas as a microorganism growth substrate into the cavity of the hollow fiber membrane. The PVDF hollow fiber membrane is adopted, so that bubble-free aeration can be realized, and the system can support aerobic, anoxic and/or anaerobic zones. Compared with the traditional biological membrane, the MABR technology has unique advantages in wastewater treatment, the MABR provides a process for supporting synchronous nitrification and denitrification, and has the advantages of high oxygen utilization efficiency, no need of external carbon source, effective removal of COD/N and improved energy efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a waste membrane aeration membrane bioreaction experimental device.
One of the technical solutions proposed by the present invention to solve the technical problems proposed in the prior art is:
provides a waste membrane aeration membrane biological reaction experimental device, which comprises an air supply system and a water inlet and outlet circulating system;
the gas supply system consists of a vacuum pump and a gas flowmeter; introducing gas of the microorganism growth matrix into the inner core of the hollow fiber membrane through a vacuum pump to provide a gas environment for the microorganisms loaded on the outer surface of the hollow fiber membrane; controlling the flow rate of the gas through a gas flowmeter to create aerobic, anoxic and/or anaerobic zones for the biological membrane loaded on the outer surface;
the water inlet and outlet circulating system consists of a circulating pump and a water storage device; the sewage enters the membrane bioreactor through the circulating pump and then returns to the water storage device through the water outlet, so that the circulating treatment of the sewage is realized.
In one embodiment: the microorganism carrier is a waste PVDF hollow fiber membrane, the inner diameter is 1.1mm, the outer diameter is 2mm, the length is 300mm, and the effective membrane area is 1885.0mm2。
In one embodiment: 1 membrane filament is arranged in the membrane bioreactor, the effective water depth is 300mm, and the inner diameter is 8 mm.
Compared with the background technology, the technical scheme has the following advantages:
MABR is a new technology combining membrane technology and microbiological method. Different from the traditional biomembrane process, the technology has the advantages of bubble-free aeration, higher oxygen utilization rate, layered treatment function, convenient management and the like. Wherein, the membrane component plays a dual role in the membrane component, namely, the microorganism attaching carrier is used as an aeration mass transfer channel at the same time.
2. The aeration and load material adopts the hollow fiber membrane made of the waste PVDF material, on one hand, the waste PVDF is recycled, on the other hand, the hollow fiber membrane can realize bubble-free aeration, and a good gas environment is provided for the growth of microorganisms.
3. The invention realizes the synchronous nitrification and denitrification process of the biological membrane by controlling the membrane thickness and the aeration rate, the two processes can be combined in the biological membrane with enough thickness, simultaneously, the invention does not need to add an external carbon source, microorganisms directly utilize nutrient substances in the sewage, and simultaneously, the effect of purifying the sewage is achieved, the cost is low, and the efficiency is high.
Drawings
FIG. 1 is a schematic diagram of an experimental apparatus for waste membrane aeration membrane bioreaction according to the present invention.
Reference numerals: 1: a water storage device; 2: circulating pump: 3: PVDF hollow fiber membrane; 4: a membrane bioreactor; 5: an air outlet valve; 6: a pressure gauge; 7: a gas flow meter; 8: an intake valve; 9: a vacuum pump.
Detailed Description
The invention is further illustrated by the following specific examples and figures:
example 1
1. Mixing the sludge-water mixture (from A) with mixed liquor suspended solid concentration (MLSS) of 5000mg/L2Preparation of activated sludge and simulated municipal sewage in a secondary sedimentation tank in the O process) is poured into a water storage device;
2. opening a circulating pump and a vacuum pump, and adjusting the rotating speed of the circulating pump to 50rpm at the flow speed of 0.03 m/s; adjusting a vacuum pump to enable the membrane component to work under the pressure lower than the bubble point;
3. sealing the port of the reactor in order to facilitate the attachment and growth of microorganisms on the surface of the membrane, using the membrane material as the only air supply source, and discharging the muddy water mixture once the biofilm forms after 2 to 3 days;
4. introducing fresh simulated municipal sewage, continuously culturing and domesticating the biofilm, periodically sampling and monitoring the water quality removal effect in the MABR and evaluating the characteristic change of the biofilm loaded on the surface of the membrane;
and 5, after the MABR runs for 3-5 days after water is changed, the removal rates of COD and ammonia nitrogen reach more than 90%.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.
Claims (3)
1. A membrane bioreaction experimental device for waste membrane yarn aeration is characterized in that:
1) comprises an air supply system and a water inlet and outlet circulating system;
2) the gas supply system consists of a vacuum pump and a gas flowmeter; the vacuum pump leads the gas of the microorganism growth matrix into the hollow fiber membrane inner core;
3) the water inlet and outlet circulating system consists of a circulating pump and a water storage device;
4) the microorganism carrier is a waste PVDF hollow fiber membrane, is a waste hollow fiber membrane from ultrafiltration equipment and the like, and has the inner diameter of 1.1mm, the outer diameter of 2mm, the length of 300mm and the effective membrane area of 1885.0mm2；
5) The effective water depth of the membrane bioreactor is 300mm, and the inner diameter of the membrane bioreactor is 8 mm;
6) the rotating speed of the circulating pump is 50rpm, and the flow rate is 0.03 m/s; adjusting a vacuum pump to enable the membrane component to work under the pressure lower than the bubble point;
2. the membrane bioreaction experimental device for waste membrane silk aeration membrane according to claim 1, characterized in that: the formed biological membrane supports aerobic, anoxic and/or anaerobic zones, and realizes synchronous nitrification and denitrification reaction.
3. The membrane bioreaction experimental device for waste membrane silk aeration membrane according to claim 1, characterized in that: the aeration and load material adopts the waste PVDF hollow fiber membrane, on one hand, the waste PVDF is recycled, on the other hand, the hollow fiber membrane can realize bubble-free aeration, and a good gas environment is provided for the growth of microorganisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111041055.3A CN113772816A (en) | 2021-09-07 | 2021-09-07 | Membrane bioreaction experimental device for waste membrane aeration membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111041055.3A CN113772816A (en) | 2021-09-07 | 2021-09-07 | Membrane bioreaction experimental device for waste membrane aeration membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113772816A true CN113772816A (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111041055.3A Pending CN113772816A (en) | 2021-09-07 | 2021-09-07 | Membrane bioreaction experimental device for waste membrane aeration membrane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716004A (en) * | 2022-03-29 | 2022-07-08 | 南华大学 | Bubble-free aeration test device and method for uranium-containing wastewater treatment |
| CN116409877A (en) * | 2023-05-22 | 2023-07-11 | 重庆大学 | Novel sewage heat energy driven pressureless membrane type oxygen permeation aeration equipment and adjusting method thereof |
-
2021
- 2021-09-07 CN CN202111041055.3A patent/CN113772816A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716004A (en) * | 2022-03-29 | 2022-07-08 | 南华大学 | Bubble-free aeration test device and method for uranium-containing wastewater treatment |
| CN116409877A (en) * | 2023-05-22 | 2023-07-11 | 重庆大学 | Novel sewage heat energy driven pressureless membrane type oxygen permeation aeration equipment and adjusting method thereof |
| CN116409877B (en) * | 2023-05-22 | 2024-09-03 | 重庆大学 | Novel sewage heat energy driven pressureless membrane type oxygen permeation aeration equipment and adjusting method thereof |
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