CN110467254B - Modified potential energy reoxygenation biological rotating disc - Google Patents
Modified potential energy reoxygenation biological rotating disc Download PDFInfo
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- CN110467254B CN110467254B CN201910884988.5A CN201910884988A CN110467254B CN 110467254 B CN110467254 B CN 110467254B CN 201910884988 A CN201910884988 A CN 201910884988A CN 110467254 B CN110467254 B CN 110467254B
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- 238000005381 potential energy Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 239000000725 suspension Substances 0.000 claims abstract description 64
- 239000010865 sewage Substances 0.000 claims abstract description 62
- 238000007667 floating Methods 0.000 claims abstract description 56
- 230000005484 gravity Effects 0.000 claims abstract description 6
- 239000011148 porous material Substances 0.000 claims description 24
- 239000000945 filler Substances 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005265 energy consumption Methods 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 230000006798 recombination Effects 0.000 abstract 2
- 238000005215 recombination Methods 0.000 abstract 2
- 241000255925 Diptera Species 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- C02F3/08—Aerobic processes using moving contact bodies
- C02F3/082—Rotating biological contactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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)
- Health & Medical Sciences (AREA)
- Molecular Biology (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)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a modified potential energy reoxygenation biological turntable, which is formed by sequentially dividing an ecological bed body into a second reoxygenation tank, a third reoxygenation tank and a fifth reoxygenation tank which are communicated, wherein a floating box is arranged in the fifth reoxygenation tank and is enclosed by a housing which is covered at the bottom of the fifth reoxygenation tank, a second water inlet is formed in the top wall of the housing, a second floating body is arranged in the housing, and a first water outlet at the bottom of the floating box is closed or opened by the second floating body; a suspension pool for receiving effluent sewage is correspondingly arranged below the first water outlet, a third water outlet is also arranged at the bottom of the fifth reoxygenation pool, the third water outlet is plugged by a plugging head, a lever assembly is arranged between the plugging head and the suspension pool, and the two opposite gravity ends of the lever assembly are formed by the plugging head and the suspension pool so as to realize the opening or closing of the third water outlet through leverage; the invention utilizes the water head potential energy to intermittently carry out the oxygen recombination and the blowing-off of the sewage through the modified potential energy biological rotating disc, and has high oxygen recombination efficiency and low energy consumption.
Description
Technical Field
The invention belongs to the technical field of sewage treatment equipment, and particularly relates to a modified potential energy reoxygenation biological rotating disc.
Background
With the acceleration of urban and industrial speed in China, domestic sewage and industrial wastewater are more and more, and serious pollution is caused to the environment. At present, advanced biological treatment technology combining activated sludge and biological contact oxidation technology is mainly adopted for sewage at home and abroad, so that the treated water quality can reach the standard of reuse water, but the aeration method is mostly adopted in the aerobic process, so that the reoxygenation efficiency is low, the energy consumption is high and the running cost is high. The Chinese patent 20052056165. X utilizes the water potential energy to convert into kinetic energy through siphonage to perform atmospheric reoxygenation and stripping, and the energy consumption of aeration can be reduced, but the sewage has the defects of short residence time on each ecological bed, poor sewage treatment effect, higher energy consumption, easiness in breeding mosquitoes and flies around a biological rotating disc and the like. Therefore, the invention provides a modified potential energy biological rotating disc, which solves the problem of the sewage treatment plant.
Disclosure of Invention
In order to solve the technical problem in the current sewage treatment, the invention provides the modified potential energy reoxygenation biological rotating disc, which utilizes the potential energy of the water head to intermittently reoxygenate and blow off the sewage through the modified potential energy biological rotating disc, and has the advantages of high reoxygenation efficiency, low energy consumption, strong universality and good economic and environmental benefits.
The invention adopts the following technical scheme:
the modified potential energy reoxygenation biological turntable comprises an ecological bed body positioned at the bottom, wherein the ecological bed body extends along the left-right direction, the ecological bed body is internally divided into a second reoxygenation pond, a third reoxygenation pond and a fifth reoxygenation pond from left to right by a first baffle plate and a second baffle plate which extend along the front-back direction, sewage enters from the second reoxygenation pond, the bottoms of the second reoxygenation pond, the third reoxygenation pond and the fifth reoxygenation pond are communicated to convey sewage, pore fillers are arranged in the second reoxygenation pond and the third reoxygenation pond, a buoyancy tank is arranged at the rear part in the fifth reoxygenation pond, the buoyancy tank is positioned below the water flow height in the fifth reoxygenation pond, the buoyancy tank is enclosed by a cover arranged at the bottom of the fifth reoxygenation pond, the cover comprises a cover side wall and a cover top wall which are circumferentially arranged, a second water inlet is formed in the cover, a second cover capable of floating on the water surface is arranged in the cover, a second floating body capable of floating on the water outlet is formed by lifting the second floating body, and when the second floating body is lifted by the second floating body and the second floating body is opened, and the second floating body is opened; a suspension pool for receiving effluent sewage is correspondingly arranged below the first water outlet, a third water outlet is further arranged at the bottom of the fifth reoxygenation pool, the third water outlet is positioned in front of the buoyancy tank, the third water outlet is blocked by a blocking head, a lever assembly is arranged between the blocking head and the suspension pool, the blocking head and the suspension pool form two opposite gravity ends of the lever assembly to realize opening or closing of the third water outlet through leverage, the lever assembly comprises a first suspension rod and a second suspension rod which vertically extend and are correspondingly arranged front and back, the suspension pool is supported by the first suspension rod in a suspension manner, the first suspension rod sequentially slides from bottom to top to penetrate through a perforation, a second suspension body and the top wall of the housing, and the blocking head is supported by the second suspension rod in a suspension manner; the lever assembly has the working principle that: when the weight of water injected into the suspension pool is increased and gradually sunk, the first suspender sinks, and the second suspender drives the plugging head to move upwards through leverage, so that the third water outlet is opened for draining water; then when water in the suspension pool is gradually discharged, the weight of the suspension pool is reduced, at the moment, under the action of the gravity of the plugging head, the second suspender is pulled to sink until the plugging head plugs the third water outlet, and the first suspender drives the suspension pool to gradually move upwards through leverage; and so forth.
Preferably, a first floating body capable of floating on the water surface and a first water inlet are arranged at the lower part of the side wall of the housing adjacent to the plugging head, the first water inlet is positioned above the first floating body, the first floating body is in sliding connection with the outer side of the side wall of the housing, and the first floating body can slide upwards to just plug the first water inlet.
Preferably, a stand column extending to the bottom of the fifth reoxygenation pool is arranged on the inner side of the top wall of the housing, and the stand column is inserted in the second floating body in a sliding manner.
Preferably, the bottom wall of the suspension tank is provided with a drain hole, the bottom end of the first suspender extends out of the bottom wall of the suspension tank through the drain hole and is in sliding connection with the bottom wall of the suspension tank, the tail end of the first suspender is provided with a sealing plate, and a gap is reserved between the sealing plate and the bottom wall of the suspension tank so that the drain hole can drain sewage in the suspension tank.
Preferably, the lever assembly further comprises a pull rope, a first support shaft and a second support shaft which are arranged in a front-back corresponding mode, one end of the pull rope is connected with the top end of the first suspender, and the other end of the pull rope sequentially bypasses the first support shaft and the second support shaft and is connected with the top end of the second suspender.
Preferably, the second water inlet upper cover is provided with a filter piece, and the filter piece is positioned below the water flow height in the fifth reoxygenation tank.
Preferably, the filter element is polyhedral.
Preferably, the third reoxygenation pool is internally and sequentially paved with grid bars, a modified biological disc and a woven mesh from bottom to top, the modified biological disc is composed of second pore fillers, and the specific surface area of the second pore fillers is sequentially increased from left to right.
Preferably, the pore diameter of the woven mesh is in the micron order.
Preferably, the rear part in the second reoxygenation tank is filled with first pore filling materials, the specific surface area of the first pore filling materials increases gradually from front to back, and the front side wall of the second reoxygenation tank is communicated with a first reoxygenation tank for receiving sewage.
Preferably, an interface at the position where the first reoxygenation tank is communicated with the second reoxygenation tank is designed to be an equal-diameter port or a variable-diameter port.
The beneficial effects of the invention are as follows:
the sewage inlet tank for receiving the sewage outlet of the anaerobic equipment or the modified potential energy biological rotating disc intermittently carries out large oxygen reoxygenation and blowing off through the modified potential energy biological rotating disc by the water head potential energy, does not need chemical dosing or aeration, consumes energy again, and has low operation cost; no noise and foam, no blockage and no secondary pollution. The modified potential energy biological rotating disc can accurately control the reoxygenation period through leverage by means of water buoyancy, can accurately and rapidly adjust the reoxygenation period, and has the advantages of high denitrification and dephosphorization efficiency, strong impact load resistance, stable operation and the like. The modified potential energy biological rotating disc not only can be suitable for treating urban domestic sewage, but also is suitable for treating and recycling high-concentration sewage, has wide adaptability to sewage treatment and resource utilization, can be fully automatically controlled without special management, and has good economic benefit and environmental benefit.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a view in the direction C of FIG. 2;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 6 is a perspective view of the housing;
FIG. 7 is a top view of the housing;
in the figure: a first reoxygenation tank 1; an ecological bed body 2; a second reoxygenation tank 3; potential energy ecological bed body left side wall or right side wall 4: door plug 4-1; a first pore filler 5, a first baffle 6; third reoxygenation pond 7: a woven mesh 7-1, a modified bio-disc 7-2 and grid bars 7-3; a second baffle 8; a filter 9; a filter screen shaft 9-1, a filter screen 9-2; bracket assembly 10: the support plate 10-1, the first support shaft 10-2, the second support shaft 10-3, the strip-shaped groove 10-4, the cross beam 10-5 and the pull rope 10-6; buoyancy tank 11: the device comprises a housing 11-1, a column 11-2, a first floating body 11-3, a second floating body 11-4, a first water inlet 11-5, a first water outlet 11-6, a perforation 11-7 and a second water inlet 11-8; the second hook 12-1, the plugging head 12-2 and the third water outlet 12-3; a fifth reoxygenation tank 13; a suspension pond 14; a closing plate 15-1 and a first hook 15-2.
Detailed Description
The present invention is described in detail below by way of examples for better understanding of the present invention, and therefore the examples are not to be construed as limiting the present invention.
As shown in fig. 1-5, a modified potential energy reoxygenation biological rotating disc comprises an ecological bed body 2 positioned at the bottom, wherein the ecological bed body 2 extends along the left-right direction, the ecological bed body 2 is provided with side walls along the circumferential direction to form a space for accommodating sewage to flow, the left side wall and the right side wall of the ecological bed body 2 can be outwards rotated to be opened, maintenance and filler cleaning work are facilitated, the rotation and opening arrangement mode adopts a conventional technology, for example, the left side wall and the right side wall of the ecological bed body 2 are respectively hinged with the bottom of the ecological bed body 2, and door inserts 4-1 are arranged at the outer sides of the left side wall and the right side wall of the ecological bed body 2, so that the left side wall and the right side wall of the ecological bed body 2 can be opened to conveniently wash the filler inside; sealing strips can be additionally arranged on the left side wall and the right side wall of the ecological bed body 2 to avoid leakage during sewage circulation;
the ecological bed body 2 is internally divided into a second reoxygenation tank 3, a third reoxygenation tank 7 and a fifth reoxygenation tank 13 by a first baffle 6 and a second baffle 8 which extend along the front-back direction from left to right, sewage enters from the second reoxygenation tank 3, the bottoms of the second reoxygenation tank 3, the third reoxygenation tank 7 and the fifth reoxygenation tank 13 are communicated to convey sewage, and the specific arrangement mode that the bottoms are communicated at the position is as follows: gaps are reserved between the bottom ends of the first baffle plate 6 and the second baffle plate 8 and the bottom of the ecological bed body 2 respectively;
the rear part in the second reoxygenation tank 3 is filled with a first pore filler 5, the specific surface area of the first pore filler 5 increases gradually from front to back (i.e. along the sewage flowing direction), and the specific surface area is 500-6000m 2 The second pore filler is sponge filler, purchased from Yixing, and available from sponge products, inc.), the first pore filler 5 has the functions of filtering sewage and forming a membrane, the inside of the first pore filler 5 can be of a pore structure with any geometric shape, and the pore structure can increase the specific surface area of the pore filler, so that the area of a biological membrane is increased; the specific surface area of the first pore filling material 5 increases progressively along the sewage flow direction, so that the impurities are convenient to sink and the blockage of the pore filling material is reduced.
In this embodiment, the water inlet mode of the second reoxygenation tank 3 is: the front of the second reoxygenation tank 3 is provided with a first reoxygenation tank, the front of the top wall of the first reoxygenation tank is provided with a sewage bearing port, and the sewage bearing port is provided with a side wall extending outwards along the circumferential direction so as to be convenient for bearing sewage. The front end opening of the first reoxygenation tank is communicated with the front side wall of the second reoxygenation tank, and the front end opening of the first reoxygenation tank is a reducing port: the diameter-changing port is beneficial to improving the flow rate of sewage flowing into the second reoxygenation tank 3, improving the oxygen content of the sewage and further improving the reoxygenation effect of the sewage.
The third reoxygenation tank 7 is internally and sequentially paved with a grid 7-3, a modified biological disk 7-2 and a woven mesh 7-1 from bottom to top, the modified biological disk 7-2 is composed of a second pore filler, and the specific surface area of the second pore filler is from left to right (namely along the sewage flowing direction)Sequentially increasing, and the specific surface area is 500-6000m 2 /g (the second porous filler is a sponge filler available from Yixing, uyo sponge products Co., ltd.); the mesh size of the woven mesh 7-1 is in the order of micrometers, preferably 100-200 meshes. The woven mesh 7-1 is transparent, but does not contain mosquitoes and flies, so that the problem of breeding mosquitoes and flies around the biological disc is reduced; the modified biological disk 7-2 is internally provided with a plurality of holes for improving the specific surface area, and the holes can be used for aquatic plant cultivation, so that the denitrification and dephosphorization efficiency is high; the grid bars 7-3 are used for sinking trace sludge and aerobic bacterial carcasses in sewage.
The rear part in the fifth reoxygenation tank 13 is provided with a buoyancy tank 11, the buoyancy tank 11 is positioned below the water flow height in the fifth reoxygenation tank 13 so as to realize that the water in the fifth reoxygenation tank 13 flows into the buoyancy tank 11, the buoyancy tank 11 is formed by enclosing a housing 11-1 covered at the bottom of the fifth reoxygenation tank 13, the housing 11-1 comprises a housing 11-1 side wall and a housing 11-1 top wall which are arranged along the circumferential direction, the housing 11-1 top wall is provided with a second water inlet 11-8, the second water inlet 11-8 is covered with a cube-shaped filter element 9, the filter element 9 comprises a filter screen shaft which is positioned in the middle part and extends along the vertical direction and a polyhedral rigid filter screen which is arranged around the filter screen shaft, the filter screen shaft is detachably connected with the housing 11-1, on one hand, the housing 11-1 can be prevented from falling down when moving, and on the other hand, the filter element 9 is convenient to clean and maintain; the filter element 9 is positioned below the water flow height in the fifth reoxygenation tank 13 so as to facilitate the water in the fifth reoxygenation tank 13 to flow into the buoyancy tank 11 after being filtered, and the filter element 9 can effectively filter the sewage entering the second water inlet 11-8. A second floating body 11-4 capable of floating on the water surface is arranged in the housing 11-1, and is positioned at the bottom of a fifth reoxygenation tank 13 or a buoyancy tank 11 when no water buoyancy exists, the housing 11-1 can be jacked up and floated by the second floating body 11-4, a first water outlet 11-6 and a perforation 11-7 are arranged at the bottom of the fifth reoxygenation tank 13 covered by the second floating body 11-4, when the second floating body 11-4 is closed, and when the second floating body 11-4 floats upwards, the first water outlet 11-6 is opened; the lower part of the first water outlet 11-6 is correspondingly provided with a suspension pool 14 for receiving effluent sewage, the suspension pool 14 is suspended and supported by a first hook 15-2 (the hooks used in the embodiment are all provided with longer rod parts), the first hook 15-2 is sequentially and slidably arranged in the perforated hole 11-7, the second floating body 11-4 and the top wall of the housing 11-1 from bottom to top, the top end of the first hook 15-2 is provided with a pull rope 10-6, the pull rope 10-6 sequentially bypasses a first support shaft 10-2 and a second support shaft 10-3 which are symmetrically arranged from front to bottom, the tail end of the pull rope 10-6 is provided with a second hook 12-1 which is symmetrically arranged from front to bottom with the first hook 15-2, the bottom of the second hook 12-1 is provided with a sealing plug 12-2, the bottom of the fifth reoxygenation pool 13 is also provided with a third water outlet 12-3, the third water outlet 12-3 is positioned in front of the housing 11-1, and the sealing plug 12-2 is used for sealing the third water outlet 12-3.
In this embodiment, the first support shaft 10-2 and the second support shaft 10-3 are fixed on the fifth reoxygenation tank 13 by a bracket assembly 10, and the bracket assembly 10 is specifically as follows: the bracket assembly 10 comprises a transverse beam 10-5 extending leftwards and rightwards and a strip-shaped groove 10-4 extending forwards and backwards, the transverse beam 10-5 is fixedly arranged on the ecological bed body 2, the strip-shaped groove 10-4 is vertically fixed at the top end of the transverse beam 10-5, a left support plate 10-1 and a right support plate 10-1 are symmetrically arranged at the front end and the rear end of the strip-shaped groove 10-4 respectively, a first support shaft 10-2 or a second support shaft 10-3 is arranged between the left support plate 10-1 and the right support plate 10-1, a pull rope 10-6 is positioned above the strip-shaped groove 10-4 and supported by the first support shaft 10-2 and the second support shaft 10-3, one end of the pull rope 10-6 is connected with a suspension tank 14, the other end of the pull rope is connected with a blocking head 12-2, a fixed pulley is formed, and the opening or closing operation of the third water outlet 12-3 is performed by leverage.
The working principle of the water drainage in the fifth reoxygenation tank 13 is as follows: the sewage gathered in the suspension pond 14 is sunk to a certain extent, the suspension pond 14 drives the first hook 15-2 to sink synchronously, the first hook 15-2 pulls down the pull rope 10-6, the other end of the pull rope 10-6 pulls up the second hook 12-1 through leverage, the second hook 12-1 drives the blocking head 12-2 to move upwards, the third water outlet 12-3 is opened, and the sewage in the fifth reoxygenation pond 133 directly flows out in a large amount through the third water outlet 12-3 and enters the next link; meanwhile, the water in the suspension tank 14 gradually flows out, the weight of the suspension tank 14 is lightened, the blocking head 12-2 drives the second hook 12-1 to sink under the action of gravity, and the first hook 15-2 and the suspension tank 14 are driven to move upwards again through leverage until the water in the suspension tank 14 is completely discharged, and the blocking head 12-2 blocks the third water outlet 12-3 again.
In order to avoid the second floating body 11-4 from swaying left and right, an upright post 11-2 extending to the bottom of the fifth reoxygenation tank 13 is arranged at the inner side of the top wall of the housing 11-1, and the upright post 11-2 is slidably inserted into the second floating body 11-4 to limit the swaying of the second floating body 11-4.
In order to avoid the problem that the second floating body 11-4 is difficult to float when sewage in the fifth reoxygenation tank 13 enters the buoyancy tank 11 from the second water inlet 11-8, in this embodiment, a first floating body 11-3 capable of floating on the water surface and a first water inlet 11-5 are arranged at the lower part of the side wall of the housing 11-1 adjacent to the plugging head 12-2, the first water inlet 11-5 is positioned above the first floating body 11-3, the first floating body 11-3 is connected with the outer side of the side wall of the housing 11-1 in a sliding manner, and the first floating body 11-3 can slide upwards to just plug the first water inlet 11-5 (this can be achieved by adopting the conventional technology, for example, a stop is arranged at the upper part of the first water inlet 11-5 to stop the first floating body 11-3 from sliding upwards), and in the absence of water buoyancy, the first floating body 11-3 is positioned at the bottom of the fifth reoxygenation tank 13 or the buoyancy tank 11; the principle is that when sewage enters the fifth reoxygenation tank 13 from the bottom, the sewage naturally enters the lower part of the buoyancy tank 11 from the first water inlet 11-5 at the lower part of the buoyancy tank 11, when a small amount of sewage is accumulated, the second floating body 11-4 slowly floats, and at the same time, the first floating body 11-3 also floats upwards under the action of the sewage in the fifth reoxygenation tank 13, so that the first floating body 11-3 slides upwards along the side wall of the housing 11-1 until the first water inlet 11-5 is just blocked, the sewage in the fifth reoxygenation tank 13 rapidly increases, and the sewage enters the buoyancy tank 11 from the second water inlet 11-8.
In this embodiment, in order to facilitate the water in the suspension tank 14 to drain out to enter the next reoxygenation cycle, a drain hole is provided on the bottom wall of the suspension tank 14, the bottom end of the first hook 15-2 extends out of the bottom wall of the suspension tank 14 through the drain hole and is slidably connected with the bottom wall of the suspension tank 14, a sealing plate 15-1 is provided at the end of the first hook 15-2, and the sealing plate 15-1 is rugged, so that a gap is left between the sealing plate 15-1 and the bottom wall of the suspension tank 14 to facilitate the drain hole to drain out the sewage in the suspension tank 14, and the sealing plate 15-1 can control the flow rate of the sewage in the suspension tank 14.
The reoxygenation working principle of the invention is explained as follows:
generally, during reoxygenation operation, sewage flows into the second reoxygenation tank 3, the third reoxygenation tank 7 and the fifth reoxygenation tank 13 from the first reoxygenation tank sequentially along the bottom of the ecological bed body 2, sewage in the fifth reoxygenation tank 13 firstly enters the floating tank 11 through the first water inlet 11-5 positioned at the lower position, the second floating body 11-4 floats upwards along the upright post 11-2 under the buoyancy of water, so that the first water outlet 11-6 and the second water outlet are opened, and sewage in the floating tank 11 flows into the suspension tank 14 through the first water outlet 11-6 and the second water outlet under the action of gravity and the like; along with the continuous inflow of the sewage in the fifth reoxygenation tank 13, the first floating body 11-3 floats under the buoyancy of water and slides upwards to block the first water inlet 11-5, at this time, the sewage in the fifth reoxygenation tank 13 enters the buoyancy tank 11 from the second water inlet 11-8, and the second floating body 11-4 continuously floats upwards until the jacking shell 11-1 floats at the same time. When sewage continuously flows into the suspension pond 14 from the first water outlet 11-6, the suspension pond 14 gradually sinks to drive the first hook 15-2 to synchronously sink when the sewage in the suspension pond 14 is gathered to a certain degree, the first hook 15-2 pulls down the pull rope 10-6, the other end of the pull rope 10-6 pulls up the second hook 12-1 upwards, the second hook 12-1 drives the blocking head 12-2 to move upwards, and therefore the third water outlet 12-3 is opened, and the sewage in the fifth reoxygenation pond 13 directly flows out in a large quantity through the third water outlet 12-3 and enters the next link. While as sewage flows out through the third water outlet 12-3, the blocking head 12-2 and the second hook 12-1 sink, and meanwhile, the first hook 15-2 is driven to rise through the pull rope 10-6; simultaneously, the second floating body 11-4 and the housing 11-1 sink, the second floating body 11-4 moves downwards along the upright post 11-2 and gradually seals the first water outlet 11-6 and the second water outlet, the first floating body 11-3 also moves downwards gradually to open the first water inlet 11-5, the original state is restored, the next reoxygenation state is ready to be entered, and one reoxygenation period is completed, so that the device is circulated in sequence, special personnel management is not needed, the whole process can be automatically controlled, the energy consumption is reduced by using potential energy, and the efficiency is improved; according to the invention, the reoxygenation period can be regulated and controlled by regulating the diameter of the first water outlet 11-6, and in the embodiment, the diameter of the first water outlet 11-6 is phi 26mm, and the reoxygenation period is 5min.
Through detecting the water inlet and outlet quality of the modified potential energy reoxygenation biological rotating disc in the embodiment, the detection result is as follows:
TABLE 1 Inlet and outlet Water quality index
It can be seen that the removal rate of COD in the embodiment is about 7%, and the removal rate of COD can be higher by using the method through multi-layer superposition, so that the environmental protection requirement is met.
Finally, what should be said is: the above embodiments are only for illustrating the technical solution of the present invention, and any equivalent replacement of the present invention and modification or partial replacement without departing from the spirit and scope of the present invention should be covered in the scope of the claims of the present invention.
Claims (8)
1. The modified potential energy reoxygenation biological rotating disc comprises an ecological bed body positioned at the bottom, and is characterized in that: the ecological bed body extends along the left-right direction, the ecological bed body is divided into a second reoxygenation tank, a third reoxygenation tank and a fifth reoxygenation tank from left to right by a first baffle plate and a second baffle plate which extend along the front-back direction in sequence, sewage enters from the second reoxygenation tank, the bottoms of the second reoxygenation tank, the third reoxygenation tank and the fifth reoxygenation tank are communicated to convey sewage, pore fillers are arranged in the second reoxygenation tank and the third reoxygenation tank, a buoyancy tank is arranged at the rear part in the fifth reoxygenation tank, the buoyancy tank is positioned below the water flow height in the fifth reoxygenation tank, the buoyancy tank is formed by enclosing a cover arranged at the bottom of the fifth reoxygenation tank, the cover comprises a cover side wall and a cover top wall which are arranged along the circumferential direction, a second water inlet is arranged in the cover top wall, the cover is capable of floating on the second floater on the water surface, a second floater is capable of being lifted, a second water outlet is arranged on the cover top of the cover, the second floater is covered by the second floater, the second floater is provided with a second water outlet is opened, and the first floater is opened by the second floater is provided with a water outlet; a suspension pool for receiving effluent sewage is correspondingly arranged below the first water outlet, a third water outlet is further arranged at the bottom of the fifth reoxygenation pool, the third water outlet is positioned in front of the buoyancy tank, the third water outlet is blocked by a blocking head, a lever assembly is arranged between the blocking head and the suspension pool, the blocking head and the suspension pool form two opposite gravity ends of the lever assembly to realize opening or closing of the third water outlet through leverage, the lever assembly comprises a first suspension rod and a second suspension rod which vertically extend and are correspondingly arranged front and back, the suspension pool is supported by the first suspension rod in a suspension manner, the first suspension rod sequentially slides from bottom to top to penetrate through a perforation, a second suspension body and the top wall of the housing, and the blocking head is supported by the second suspension rod in a suspension manner; the lower part of the side wall of the housing adjacent to the plugging head is provided with a first floating body and a first water inlet, wherein the first floating body can float on the water surface, the first water inlet is positioned above the first floating body, the first floating body is in sliding connection with the outer side of the side wall of the housing, and the first floating body slides upwards to just plug the first water inlet; and a filter element is arranged on the upper cover of the second water inlet.
2. The modified potential energy reoxygenation biological rotating disk of claim 1, wherein: the inner side of the top wall of the housing is provided with an upright post extending to the bottom of the fifth reoxygenation pool, and the upright post is inserted in the second floating body in a sliding manner.
3. The modified potential energy reoxygenation biological rotating disk according to claim 1 or 2, wherein: the bottom wall of the suspension pond is provided with a drain hole, the bottom end of the first suspension rod extends out of the bottom wall of the suspension pond through the drain hole and is in sliding connection with the bottom wall of the suspension pond, the tail end of the first suspension rod is provided with a sealing plate, and a gap is reserved between the sealing plate and the bottom wall of the suspension pond so that the drain hole can drain sewage in the suspension pond.
4. The modified potential energy reoxygenation biological rotating disk of claim 3, wherein: the lever assembly further comprises a pull rope, a first support shaft and a second support shaft which are arranged in a front-back corresponding mode, one end of the pull rope is connected with the top end of the first suspender, and the other end of the pull rope sequentially bypasses the first support shaft and the second support shaft and is connected with the top end of the second suspender.
5. The modified potential energy reoxygenation biological rotating disk of claim 1, wherein: the grid bars, the modified biological disc and the woven mesh are sequentially paved in the third reoxygenation tank from bottom to top, the modified biological disc is composed of second pore fillers, and the specific surface area of the second pore fillers is sequentially increased from left to right.
6. The modified potential energy reoxygenation biological rotating disk of claim 5, wherein: the aperture of the woven mesh is micron-sized.
7. The modified potential energy reoxygenation biological rotating disk of claim 1, wherein: the back part in the second reoxygenation pond is filled with first pore filler, the specific surface area of the first pore filler increases gradually from front to back, and the front side wall of the second reoxygenation pond is communicated with a first reoxygenation box for receiving sewage.
8. The modified potential energy reoxygenation biological rotating disk of claim 7, wherein: the interface at the communication position of the first reoxygenation tank and the second reoxygenation tank is designed to be an equal-diameter port or a variable-diameter port.
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