CN212712911U - Black and odorous water body treatment device - Google Patents
Black and odorous water body treatment device Download PDFInfo
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- CN212712911U CN212712911U CN202021679831.3U CN202021679831U CN212712911U CN 212712911 U CN212712911 U CN 212712911U CN 202021679831 U CN202021679831 U CN 202021679831U CN 212712911 U CN212712911 U CN 212712911U
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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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Abstract
The utility model discloses a black and odorous water body administers device belongs to environmental ecology restoration and administers the field. The method comprises the following steps: one end of the fixed frame is a water flow inlet, and the other end of the fixed frame is a water flow outlet; a membrane oxygen-permeable biomembrane assembly is arranged inside one side of the fixed frame facing the water flow inlet, a fixed piece is arranged inside one side of the fixed frame facing the water flow outlet, and biological fillers are distributed on the fixed piece; the hollow ventilated membrane aeration device is arranged below the biological filler and is used for aerating the surface of the biological filler; the membrane oxygen permeation biomembrane component is provided with a hollow fiber membrane filament, and the hollow breathable membrane aeration device is simultaneously communicated with an internal channel of the hollow fiber membrane filament. The inner biomembrane of the MABR membrane component provides oxygen for nitration reaction to remove ammonia nitrogen, the outer biomembrane is in an anoxic environment for denitrification to remove total nitrogen, and an aerobic zone is formed in the filler area to promote microorganisms to degrade pollutants in black and odorous water.
Description
Technical Field
The utility model discloses a black and odorous water body administers device belongs to environmental ecology restoration and administers the field.
Background
With the rapid development of socioeconomic in China, the process of urbanization and industrialization is accelerated, and the water quality of rivers and lakes face pollution of different degrees from the aspects of agriculture, industry, life and the like. Polluted rivers and lakes can not be treated for a long time, so that eutrophication of water bodies becomes serious day by day, water quality is deteriorated continuously, algae are erupted in a large area, fishes and aquatic animals die, the water bodies are blacked and smelled, and the ecological balance of the water bodies is finally destroyed. The action plan for preventing and treating water pollution, published by the State administration in 2015, defines a route map for treating black and odorous water, and defines a time schedule, namely, the black and odorous water in built-up areas of the places and above in China is controlled within 10% by 2020; by 2030, black and odorous water in the built-up areas of the city is totally eliminated.
At present, the commonly used water quality treatment and purification technology for black and odorous water comprises the following steps: artificial aeration and oxygenation, plant purification, a biofilm method and the like. The artificial aeration can improve the dissolved oxygen in the river water body, but the removal effect of pollutants such as COD, ammonia nitrogen and the like in the black and odorous water body is poor. The plant purification technology mainly adopts the planting of water plants in the water body, and depends on the adsorption of the root system of the aquatic plants to remove some organic pollutants, but for the more serious black and odorous water body, the aquatic plants are difficult to grow, so the effect of treating the black and odorous water body is limited. The biomembrane method is to add microbial carrier filler to the black and odorous water body and carry on the aeration oxygenation at the same time, make filler load the microbial film, thus degrade the pollutant in the black and odorous water body high-efficiently, purify water quality, wherein the choice of the aeration equipment is the key point that influences the biomembrane method and controls the black and odorous water body effect. The existing large amount of perforated aeration pipes and aeration discs adopt macroporous aeration, and the aeration method has the advantages of large bubble particles, low oxygen utilization rate, large aeration quantity demand, high energy consumption and short service life of part of aeration head materials.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel biological lake purifies device. The novel biological lake purifier is characterized in that a biomembrane method is coupled with a hollow breathable film aeration device, the micro-nano aeration technology of the hollow breathable film is fully utilized, micro-nano bubbles can be generated in a water body, the oxygen mass transfer efficiency in the water body is effectively improved, the content of dissolved oxygen in the water body is increased, the black and odorous water body and river treatment effect are improved, and the energy consumption is reduced simultaneously. Meanwhile, the novel biological lake purifier enhances the removal of ammonia nitrogen and total nitrogen of the black and odorous water body by a coupled membrane oxygen transfer biofilm technology (MABR).
A black and odorous water body purifier, comprising:
one end of the fixed frame is a water flow inlet, and the other end of the fixed frame is a water flow outlet;
a membrane oxygen-permeable biomembrane assembly is arranged inside one side of the fixed frame facing the water flow inlet, a fixed piece is arranged inside one side of the fixed frame facing the water flow outlet, and biological fillers are distributed on the fixed piece;
the hollow ventilated membrane aeration device is arranged below the biological filler and is used for aerating the surface of the biological filler;
the membrane oxygen permeation biomembrane component is provided with a hollow fiber membrane filament, and the hollow breathable membrane aeration device is simultaneously communicated with an internal channel of the hollow fiber membrane filament.
In one embodiment, a connecting port is also arranged on the oxygen-permeable biomembrane component for connecting an aeration pipeline.
In one embodiment, the aerator further comprises a blower in communication with the aeration conduit for blowing air into the aeration conduit.
In one embodiment, the blower may be an air compressor, roots blower, or centrifugal blower.
In one embodiment, the hollow breathable film aeration device is provided with aeration film wires, the aperture of the aeration film wires is 0.1-1 μm, and the outer diameter is 2.0-2.5 mm.
In one embodiment, the hollow fiber membrane filaments and the hollow gas-permeable membrane aeration device 5 are connected through a pressure reducing valve.
In one embodiment, the fixture is at least one of a rope, a chain, a hose, a hard tube, a connecting rod, a net, a cage.
In one embodiment, the number of the fixing members is plural, and a plurality of hanging points are provided on each fixing member 3, the hanging points being distributed in a matrix; the hanging points are used for fixing biological fillers.
In one embodiment, the biofilm carrier has a specific surface area of greater than 500m2/m3。
A black and odorous water body treatment method comprises the following steps:
a plurality of black and odorous water body purifiers are arranged in the water body, and water flow inlets of the black and odorous water body purifiers face the inflow direction of the water body;
aerating the hollow ventilated membrane aeration device by an air blower to oxygenate the outer surface of the biological filler;
the hollow breathable membrane aeration device presses the residual gas into an internal channel of a hollow fiber membrane filament in the membrane oxygen-permeable biomembrane component, so that oxygen is discharged to the outer surface of the membrane filament from membrane pores of the membrane filament;
forming an aerobic treatment area on the inner layer of the outer surface of a hollow fiber membrane wire in the membrane oxygen permeation biomembrane component, and forming an anoxic treatment area on the outer layer to treat black and odorous water;
an aerobic treatment area is formed on the outer surface of the biological filler to treat the black and odorous water body.
In one embodiment, the gas pressure in the hollow fiber in the membrane oxygen-permeable biomembrane component is 10-20 kPa.
In one embodiment, the aeration pressure in the hollow air-permeable membrane aeration device is 30 to 40 kPa.
Advantageous effects
The utility model discloses an embodiment provides a novel biological lake clarifier can set up in the black and odorous water body in city or rural area, be the matrix arrangement in the water, the air or the oxygen that the fan provided disperse into minute microbubble through the cavity ventilated membrane, increase oxygen and water area of contact, reduce bubble rising speed, thereby reach reinforcing aeration effect, form the aerobic zone in the filler region, promote the pollutant in the black and odorous water body of microbial degradation, the biomembrane of the inlayer of MABR membrane module provides oxygen simultaneously and carries out nitration reaction and get rid of the ammonia nitrogen, outer biomembrane is in the oxygen deficiency environment, carry out the total nitrogen of denitrification desorption.
Drawings
FIG. 1 is a schematic view of a novel biological lake purifier
FIG. 2 is a layout of novel biological lake purifier in river
Wherein, 1, a connecting port; 2. a fixed frame; 3. a fixing member; 4. biological fillers; 5. a hollow gas-permeable membrane aeration device; 6. a membrane oxygen permeable biofilm assembly; 7. a blower; 8. an aeration pipeline.
Detailed Description
More specifically, the overall technical scheme is as follows:
fig. 1 shows a schematic structural diagram of a novel biological lake purifier according to an embodiment of the present invention. As shown in fig. 1, the utility model comprises at least one fixed frame 2, a connector 1, a fixed part 3, biological fillers 4 on the fixed part 3, a hollow ventilated membrane aeration device 5 of an aerobic zone connected with an aeration pipeline 8, a membrane oxygen permeation biomembrane component 6 of an anoxic zone and a blower 7; the novel biological lake purifier main body is a membrane oxygen-permeable biological membrane component (MABR) 6, a hollow ventilated membrane aeration device 5, a fixing part 3 and biological fillers 4 on the fixing part, the membrane oxygen-permeable biological membrane component 6 and the biological fillers 4 provide a large amount of attachment spaces for microorganisms, and the biological lake purifier main body is a main place for degrading pollutants in black and odorous water. As can be understood by those skilled in the art, the combined biological filler and the connecting device need to be combined for use, and can be replaced by fiber ball filter materials, soft fillers, hollow polyhedral ball fillers, active biological fillers, suspension ball fillers, pall rings and other fillers which can provide attachment spaces for microorganisms. The fixing piece 3 has a certain length, the length is determined according to the water depth and the specific requirement, the fixing piece can be extended to a deeper position below the water surface, the microorganism attached to the combined biological filler can degrade pollutants in a larger range, and the water quality purification effect is improved. The length of the fixing part 3 can be designed into different lengths according to the scene requirement. In one embodiment of the present invention, as shown in fig. 1, a hollow permeable membrane aeration device 5 is installed at the bottom of the novel biological lake purifier. The membrane pores of the aeration fibers arranged in the hollow breathable membrane aeration device 5 are preferably 0.1-1 μm in pore diameter, and compressed air escapes through the membrane pores, so that a large number of tiny and fine bubbles with small diameters can be formed, oxygen molecules can be dissolved in polluted water, and the content of dissolved oxygen in the water is effectively increased. Meanwhile, the dispersed micro bubbles form certain impact and disturbance to the water body around the biological filler 4, so that the water body to be purified is updated, and the efficiency of purifying the polluted water body is enhanced. The novel biological lake purifier also comprises an air blower 7 connected with the hollow ventilated membrane aeration device 5. Compressed air blown by the fan escapes in the form of micro bubbles through the hollow breathable film aeration device 5, so that the water body where the biological filler 4 above is located can be oxygenated, the content of dissolved oxygen in the polluted water body is increased, and the microbial degradation of pollutants in the biological filler 4 is promoted. The fan can be arranged on the water bank and is connected with the aeration pipeline 8 through a gas transmission pipeline. In an embodiment of the present invention, as shown in fig. 1, at least one fixing frame 2 comprises a plurality of fixing members 3, one fixing member 3 is provided with a plurality of hanging points, and the plurality of hanging points are used for fixing biological filler 4. In order to better exert the degradation effect of the biological filler 4, a plurality of fixing members 3 may be provided, and a plurality of hanging points may be provided on the fixing members 3, as shown in fig. 1. The biological filler 4 is fixed on the suspension points, and the biological filler 4 is formed by the plurality of suspension points and arranged in a set, so that the lake pollution purifier can better play a role in degradation and purification in the water area occupied by the lake pollution purifier. This black and odorous water body treatment technique and device are directly placed in black and odorous water body or river course, and the biomembrane inlayer of MABR biomembrane subassembly is the aerobic zone, and the outer anoxic zone that forms, the microorganism on the membrane silk carry out ammonia nitrogen and total nitrogen that the denitrification got rid of in the water in step, and cavity ventilated membrane aeration forms the aerobic zone, and the microorganism on the biofilm carrier carries out aerobic biodegradation COD to reach the effect that the black and odorous water body was administered in situ and kept quality of water.
The hollow breathable film aeration device is connected with an aeration pipeline, the aeration pipe is connected with a pressure reducing valve and then connected with an air blower, the aeration air pressure is controlled by controlling the pressure reducing valve, and the air pressure is controlled by the hollow breathable film aeration device to be 30-40 kPa. The air pipeline of the MABR biofilm assembly is connected with the pressure reducing valve, the pressure reducing valve is connected with the aeration pipeline, and the air pressure of the membrane aeration biofilm assembly is adjusted by adjusting and controlling the size of the pressure reducing valve, so that the bubble-free aeration oxygenation effect is achieved, and the aeration air pressure of the MABR biofilm assembly is controlled to be 10-20 kPa.
Application example 1:
the length of a river channel is about 3km, the width is about 10m, and the depth is about 3m, and the water quality of the river channel is COD: 40ppm, ammonia nitrogen: 10ppm, total nitrogen: 15, total phosphorus: 1.2ppm, severe black and odorous. Placing 400 groups of assembled novel biological lake purifiers in a water body and connecting the assembled novel biological lake purifiers with pipelines; turning on a fan, and placing the novel biological lake purifier for oxygenation and aeration; the aeration pressure and the oxygen supply amount are adjusted periodically. Through the utility model discloses a novel biological lake clarifier is handled after 20 days, the water transparency increases, and the smelly degree reduces, the COD in the water: 12ppm, ammonia nitrogen: 0.2ppm, total nitrogen: 9ppm, total phosphorus: 0.5ppm, and synchronously reduces the content of COD, ammonia nitrogen, total nitrogen and total phosphorus in the water body.
Application example 2:
the length of a river channel is about 2km, the width is about 20m, and the depth is about 5m, and the water quality of the river channel is COD: 30ppm, ammonia nitrogen: 8ppm, total nitrogen: 10, total phosphorus: 0.8 ppm, severe black and odorous. Placing 200 groups of assembled novel biological lake purifiers in a water body and connecting the assembled novel biological lake purifiers with pipelines; turning on a fan, and placing the novel biological lake purifier for oxygenation and aeration; the aeration pressure and the oxygen supply amount are adjusted periodically. Through the utility model discloses a novel biological lake clarifier is handled after 20 days, the water transparency increases, and the smelly degree reduces, the COD in the water: 9ppm, ammonia nitrogen: 0.01ppm, total nitrogen: 5ppm, total phosphorus: 0.3ppm of a nitrogen-containing gas,
selected embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (9)
1. The utility model provides a black smelly water body treatment device which characterized in that includes:
one end of the fixed frame (2) is a water inlet, and the other end of the fixed frame (2) is a water outlet;
a membrane oxygen-permeable biomembrane assembly (6) is arranged inside one side of the fixed frame (2) facing the water inlet, a fixing piece (3) is arranged inside one side of the fixed frame (2) facing the water outlet, and biological fillers (4) are distributed on the fixing piece (3);
the hollow ventilated membrane aeration device (5) is arranged below the biological filler and is used for aerating the surface of the biological filler (4);
the membrane oxygen permeation biomembrane component (6) is internally provided with a hollow fiber membrane wire, and the hollow breathable membrane aeration device (5) is simultaneously communicated with an internal channel of the hollow fiber membrane wire.
2. The black and odorous water treatment device according to claim 1, wherein a connector (1) is further provided on the membrane oxygen permeation biofilm assembly (6) for connecting an aeration pipeline (8).
3. The black odorous water body treatment device according to claim 2, further comprising a blower (7) communicating with the aeration conduit (8) for blowing air into the aeration conduit (8).
4. The black and odorous water body treatment device according to claim 3, wherein the blower (7) may be an air compressor, a Roots blower or a centrifugal blower.
5. The black and odorous water treatment device according to claim 1, wherein the hollow air permeable membrane aeration device (5) is provided with aeration membrane filaments, the aperture of the aeration membrane filaments is 0.1-1 μm, and the outer diameter is 2.0-2.5 mm.
6. The black and odorous water body treatment device according to claim 1, wherein the hollow fiber membrane wires and the hollow gas-permeable membrane aeration device (5) are connected through a pressure reducing valve.
7. The black and odorous water body treatment device according to claim 1, wherein the fixing member (3) is at least one of a rope, a chain, a hose, a hard pipe, a connecting rod, a net, and a cage.
8. The black and odorous water body treatment device according to claim 1, wherein the number of the fixing members (3) is plural, and a plurality of suspension points are provided on each fixing member (3), the suspension points being arranged in a matrix.
9. The black and odorous water body treatment device according to claim 8, wherein the suspension point is used for fixing a biological filler (4); the specific surface area of the biological filler (4) is more than 500m2/m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021679831.3U CN212712911U (en) | 2020-08-13 | 2020-08-13 | Black and odorous water body treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021679831.3U CN212712911U (en) | 2020-08-13 | 2020-08-13 | Black and odorous water body treatment device |
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| CN212712911U true CN212712911U (en) | 2021-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028263A (en) * | 2022-04-25 | 2022-09-09 | 中山大学 | Device for treating black and odorous water body by mixotrophic denitrification coupling micro-nano aeration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028263A (en) * | 2022-04-25 | 2022-09-09 | 中山大学 | Device for treating black and odorous water body by mixotrophic denitrification coupling micro-nano aeration |
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