CN106745706B - Activated sludge precipitation device placed in aeration tank - Google Patents
Activated sludge precipitation device placed in aeration tank Download PDFInfo
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- CN106745706B CN106745706B CN201611249932.5A CN201611249932A CN106745706B CN 106745706 B CN106745706 B CN 106745706B CN 201611249932 A CN201611249932 A CN 201611249932A CN 106745706 B CN106745706 B CN 106745706B
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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
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0069—Making of contact surfaces, structural details, materials therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2444—Discharge mechanisms for the classified liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention relates to the technical field of sludge treatment and discloses an activated sludge precipitation device arranged in an aeration tank, which comprises a precipitation cone cylinder and a sludge collecting cone cylinder, wherein the upper end and the lower end of the precipitation cone cylinder are both provided with openings, the precipitation cone cylinder and the sludge collecting cone cylinder are inverted, the precipitation cone cylinder is arranged above the sludge collecting cone cylinder, the lower port of the precipitation cone cylinder extends into the upper port of the sludge collecting cone cylinder, and a mixed liquid channel for aeration mixed liquid to pass through is formed between the precipitation cone cylinder and the sludge collecting cone cylinder; the sedimentation cone is internally provided with a sedimentation cone with two open ends, the inner wall surface of the sedimentation cone and the inner wall surface of the sedimentation cone jointly define an inner sedimentation area communicated with the lower port of the sedimentation cone, the outer wall surface of the sedimentation cone and the inner wall surface of the sedimentation cone jointly define an outer sedimentation area, and a separation liquid channel communicated with the inner sedimentation area and the outer sedimentation area is formed between the lower end of the sedimentation cone and the inner wall surface of the sedimentation cone. The invention does not need to build a secondary sedimentation tank, shortens sedimentation time, improves efficiency and reduces investment.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to an activated sludge precipitation device arranged in an aeration tank.
Background
The conventional sewage biochemical treatment mode in the prior art is a process of performing aeration treatment in an aeration tank and then performing precipitation separation in a secondary sedimentation tank. Microorganisms are suspended in water in an aeration tank to capture organic pollutants for degradation or adsorption, the aeration mixed solution treated by the aeration tank enters a subsequent secondary sedimentation tank for sedimentation, and a supernatant layer positioned at the upper part and a pollution layer positioned at the lower part are formed after sedimentation, wherein the supernatant layer becomes clean and sanitary, so that the effluent can reach the standard.
In the prior art, an aeration tank and a secondary sedimentation tank are respectively built, so that the investment is high, and the occupied area is large; the conventional secondary sedimentation tank is in a column type or a cylinder type, the tank capacity is large, and the required residence time is usually more than 2 hours; because the conventional secondary sedimentation tank has large tank capacity and long residence time, the equipment is difficult to form; the aeration mixed solution is precipitated in the secondary sedimentation tank and simultaneously finishes mud-water separation, and the separated gas floats upwards to influence the precipitation effect, so that the precipitation time is required to be prolonged; only one bottom surface in the internal sedimentation area is sedimented, so that the space utilization efficiency is low. In the prior art, the sedimentation time required by sedimentation by using a secondary sedimentation tank is long, the efficiency is low, the investment is large, and the equipment is difficult to form.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to provide an activated sludge precipitation device arranged in an aeration tank, which aims to solve the problems that in the prior art, a secondary sedimentation tank is needed to be built for sludge-water separation of mixed liquor of the aeration tank, the sedimentation time is long, the efficiency is low and the investment is high.
(II) technical scheme
In order to solve the technical problems, the invention provides an activated sludge precipitation device arranged in an aeration tank, which comprises a precipitation cone cylinder and a sludge collecting cone cylinder, wherein the upper end and the lower end of the precipitation cone cylinder are both provided with openings, the precipitation cone cylinder and the sludge collecting cone cylinder are both inverted, the precipitation cone cylinder is arranged above the sludge collecting cone cylinder, the lower port of the precipitation cone cylinder extends into the upper port of the sludge collecting cone cylinder, and a mixed liquid channel for an aeration mixed liquid to pass through is formed between the precipitation cone cylinder and the sludge collecting cone cylinder; the sedimentation cone is internally provided with an air-dredging cylinder with two open ends, an inner sedimentation area communicated with the lower port of the sedimentation cone is jointly defined by the inner wall surface of the air-dredging cylinder and the inner wall surface of the sedimentation cone, an outer sedimentation area is jointly defined by the outer wall surface of the air-dredging cylinder and the inner wall surface of the sedimentation cone, and a separation liquid channel communicated with the inner sedimentation area and the outer sedimentation area is formed between the lower end of the air-dredging cylinder and the inner wall surface of the sedimentation cone.
The device also comprises a water collecting tank and a water draining pipe, wherein the water collecting tank is arranged in the precipitation cone barrel and is positioned in an external precipitation area; the drain pipe is communicated with the water collecting tank.
The water collecting device further comprises a water diversion pipe, wherein the water drainage pipe is communicated with the water collecting tank through the water diversion pipe; the water guide pipe extends along the inner wall of the precipitation cone barrel, passes through the separation liquid channel and extends out of the lower port of the precipitation cone barrel to be connected with the drain pipe.
Wherein the water collecting tank is provided with a water collecting weir.
The water collecting tank is an annular groove and is arranged around the periphery of the air-repellent cylinder.
The plurality of water diversion pipes are uniformly arranged along the circumferential direction of the inner side wall of the precipitation cone barrel; the drain pipe is provided with an annular section which is respectively connected with a plurality of water diversion pipes.
Wherein, the upper port of the dredge cylinder is flush with the upper port of the sedimentation cone cylinder.
The device also comprises a mud discharging pipe, wherein the mud discharging pipe is connected with the lower port of the mud collecting cone.
Wherein, the air-repellent cylinder is also in a conical structure, and the air-repellent cylinder is positively arranged in the precipitation conical cylinder.
Wherein, the sedimentation cone cylinder, the dredge cylinder and the sludge collecting cone cylinder are cone cylinders.
(III) beneficial effects
The invention provides an activated sludge precipitation device arranged in an aeration tank, which comprises a precipitation cone cylinder and a sludge collecting cone cylinder, wherein the upper end and the lower end of the precipitation cone cylinder are both provided with openings, the precipitation cone cylinder and the sludge collecting cone cylinder are both inverted, the precipitation cone cylinder is arranged above the sludge collecting cone cylinder, the lower port of the precipitation cone cylinder extends into the upper port of the sludge collecting cone cylinder, and a mixed liquid channel for aeration mixed liquid to pass through is formed between the precipitation cone cylinder and the sludge collecting cone cylinder; the sedimentation cone is internally provided with a sedimentation cone with two open ends, the inner wall surface of the sedimentation cone and the inner wall surface of the sedimentation cone jointly define an inner sedimentation area communicated with the lower port of the sedimentation cone, the outer wall surface of the sedimentation cone and the inner wall surface of the sedimentation cone jointly define an outer sedimentation area, and a separation liquid channel passing through the inner sedimentation area and the outer sedimentation area is formed between the lower end of the sedimentation cone and the inner wall surface of the sedimentation cone. When the device is used, the device is placed in the aeration tank, the sludge-water separation is completed in the aeration tank, a secondary sedimentation tank is not required to be built, the sedimentation time is shortened, the efficiency is improved, and the investment is reduced.
Drawings
FIG. 1 is a top view of an embodiment of an activated sludge settling device disposed in an aeration tank in accordance with the present invention;
FIG. 2 is a left side view showing an embodiment of the activated sludge settling device placed in an aeration tank according to the present invention;
fig. 3 is a longitudinal sectional view (i.e., a sectional view along A-A in fig. 2) of an embodiment of the activated sludge settling device disposed in an aeration tank according to the present invention.
In the figure, 1: a precipitation cone; 2: a dredge cylinder; 3: a water collection tank; 4: a water conduit; 5: a drain pipe; 6: a mud collecting cone; 7: a mud pipe; 8: an internal sedimentation zone; 9: an external sedimentation zone; 31: a water collecting weir crest; 51: an annular segment.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 3, an embodiment of an activated sludge settling apparatus placed in an aeration tank according to the present invention is shown to include a settling cone 1 and a sludge collecting cone 6, both of which are opened at upper and lower ends. The sedimentation cone 1 and the mud collecting cone 6 are both inverted, namely the sedimentation cone 1 and the mud collecting cone 6 are both of which the diameter of the upper port is larger than that of the lower port. When the cone is a cone or a pyramid, the diameter should be an equivalent diameter such as a circumscribed circle or an inscribed circle. The sedimentation cone 1 is arranged above the mud collection cone 6, the lower port of the sedimentation cone 1 extends into the upper port of the mud collection cone 6, and a mixed liquid channel for the aeration mixed liquid to pass through is formed between the sedimentation cone 1 and the mud collection cone 6. Specifically, a gap is formed between the outer surface of the precipitation cone 1 and the upper port of the mud collection cone 6, and the gap forms a mixed liquid channel. Preferably, the ratio of the diameter of the lower port of the precipitation cone 1 to the diameter of the upper port of the mud collection cone 6 is 2/3-4/5. The sedimentation cone 1 is internally provided with a sedimentation cone 2 with two open ends, the inner wall surface of the sedimentation cone 2 and the inner wall surface of the sedimentation cone 1 jointly define an inner sedimentation area 8 communicated with the lower port of the sedimentation cone 1, the outer wall surface of the sedimentation cone 2 and the inner wall surface of the sedimentation cone 1 jointly define an outer sedimentation area 9, and a separation liquid channel communicated with the inner sedimentation area 8 and the outer sedimentation area 9 is formed between the lower end of the sedimentation cone 2 and the inner wall surface of the sedimentation cone 1. Preferably, the center lines of the sedimentation cone 1, the dredge cylinder 2 and the sludge collecting cone 6 are on the same straight line.
The sludge discharge pipe 7 is used for discharging sludge, and the sludge discharge pipe 7 is connected with the lower port of the sludge collection cone 6. Specifically, one end of the sludge discharge pipe 7 is connected with the lower port of the sludge collection cone 6, and the other end of the sludge discharge pipe 7 is connected with the outside of the aeration tank.
The whole device is directly arranged in the aeration tank, wherein the upper port of the sedimentation cone is higher than the liquid level of the aeration tank. The upper port of the sludge collection cone 7 is higher than the lower port of the sedimentation cone 1, so that the aeration mixed liquor enters the lower port of the sedimentation cone 1 from top to bottom through a mixed liquor channel between the sedimentation cone 1 and the sludge collection cone 6, in the process, a large amount of gas in the mixed liquor is separated due to light specific gravity and enters the aeration tank upwards, the rest small amount of air is downwards and then upwards deflected along with the aeration mixed liquor into an inner sedimentation area 8 at the lower part of the sedimentation cone 1, in the inner sedimentation area 8, most of gas in the aeration mixed liquor is separated from mud and rises, the mud is discharged into the air through the upper port of the sludge collection cone 2, the separated supernatant is then risen into an outer sedimentation area 9 through a separation liquor channel between the sedimentation cone 1 and the sludge collection cone 2, and the sludge is precipitated on the inner wall surface at the lower part of the sedimentation cone 1, slides out through the bottom port of the sedimentation cone 1, enters the sludge collection cone 6, is discharged from the lower port of the sludge collection cone 6, and is discharged into the sludge collection cone 6 when the sludge is required to be discharged to the outside of the sludge collection cone 6, and the sludge collection cone 6 is further opened when the sludge is discharged to the outside of the sludge collection cone 6. The supernatant may be discharged from the precipitation cone in a number of ways, for example by pumping with a water pump.
In one embodiment, the diameter of the upper opening of the precipitation cone is 2.4m, the height of the precipitation cone is 3m, and the volume inside the precipitation cone is about 6m 3 . Calculated by the residence time of 15min, the theoretical water treatment amount is 24m 3 /h，576m 3 /d; daily treatment of 1 ten thousand m 3 According to the specifications described in example 1, the sewage plant/d can theoretically meet the precipitation requirement by using 18 sets of equipment.
The sedimentation cone and the mud collecting cone adopt cone structures, so that the pool capacity and the residence time can be reduced by more than half under the condition of the same sedimentation area; when in use, the device is directly arranged in the aeration tank, and a secondary sedimentation tank is not needed to be additionally arranged, so that the capital investment is saved; the sedimentation cone is divided into an upper area and a lower area, the gas in the aeration mixed solution is separated in the lower internal sedimentation area 8 and is discharged by the air-repellent pump, the separated mixed solution floats to the external sedimentation area 9 through a separation liquid channel, the influence of gas separation is avoided when the external sedimentation area 9 is used for sedimentation, the sedimentation state is more stable, and the water outlet effect is better ensured; the mud collecting cone is arranged below the precipitation cone, the aeration mixed liquid enters the precipitation cone through a mixed liquid channel between the mud collecting cone and the precipitation cone, the mixed liquid is forced to move downwards before entering the internal precipitation area 8, so that air entering the internal precipitation area 8 in the mixed liquid is greatly reduced, the mud collecting cone is arranged below a lower port of the precipitation cone, the aeration mixed liquid is prevented from directly impacting the internal precipitation area 8 through the lower port of the precipitation cone, and the static precipitation effect in the precipitation area is ensured.
In this embodiment, the air-repellent cylinder 2 is also in a conical structure, and the air-repellent cylinder 2 is disposed in the precipitation cone 1 in a forward direction. The sedimentation cone 1 adopts the toper structure, forms the sedimentation inclined plane, and sedimentation cone 1 inside sets up dredge jar 2, and dredge jar 2 is the toper jar that forward set up, and dredge jar 2 surface also simultaneously as the sedimentation surface of outside sedimentation zone 9 to make the sedimentation area further increase, the sedimentation distance further shorten, thereby improved the sedimentation effect by a wide margin, and can shorten sedimentation time by a wide margin. Furthermore, the sedimentation cone 1, the dredge cylinder 2 and the sludge collecting cone 6 all adopt cone structures.
The device is directly arranged in the aeration tank, and the residence time of the mixed solution in the device is only about 15 minutes, and the volume of the aeration tank is not obviously influenced, so that the biological aerobic biochemical residence time can be ensured.
The mud-water separation is completed in the inner sedimentation area 8 of the sedimentation cone 1, so that the influence of gas on the separation effect of the outer sedimentation area 9 of the sedimentation cone 1 is avoided, and the water outlet quality is ensured.
Because the residence time is short, the volume of the equipment is greatly reduced, the equipment can be formed, the processing and the transportation are convenient, and the manufacturing precision of the equipment is improved.
The precipitation cone 1 and the mud collection cone 6 are both of conical structures, the walls of the cylinders are smooth surfaces and have no abnormal protruding structures, so that a plurality of devices are convenient to merge and transport (stack of the cylinders), the devices do not need to be cut or welded on the cylinders during field assembly, and the smoothness of the surfaces of the cylinders is ensured, so that the operation effect is ensured.
Further, in order to facilitate the discharge of supernatant, the activated sludge precipitation device placed in the aeration tank further comprises a water collection tank 3 and a drain pipe 5, wherein the water collection tank 3 is arranged in the precipitation cone 1, and the water collection tank 3 is positioned in an external precipitation area 9; the drain pipe 5 communicates with the water collection sump 3. The supernatant enters an external sedimentation area 9 through a supernatant channel, wherein a small amount of entrained sludge is continuously sedimented on the inner wall of the sedimentation cone and the outer wall of the air-repellent cylinder 2, and the sedimented sludge slides downwards to the lower half part of the sedimentation area from the supernatant channel between the sedimentation cone 1 and the air-repellent cylinder 2 and continuously slides downwards to the lower port of the sedimentation cone 1. The supernatant enters the water collection tank 3 and is discharged out of the precipitation cone 1 via a drain pipe 5 connected to the water collection tank 3 and further out of the aeration tank. For the convenience of water intake, the water collection sump 3 is provided with a water collection weir 31.
Further, the activated sludge precipitation device arranged in the aeration tank also comprises a water diversion pipe 4, and a drain pipe 5 is communicated with the water collecting tank 3 through the water diversion pipe 4; the water conduit 4 extends along the inner wall of the precipitation cone 1 through the separation liquid channel and extends out of the lower port of the precipitation cone 1 to be connected with the drain pipe 5. The water conduit 4 is led out from the lower port of the precipitation cone 1, a through hole is not required to be arranged on the precipitation cone 1, the manufacture and the transportation are convenient, and the safety performance is improved. Preferably, the water collecting tank 3 is an annular groove, and the water collecting tank 3 is arranged around the periphery of the air-repellent cylinder 2. The plurality of water conduits 4 are uniformly arranged along the circumferential direction of the inner side wall of the precipitation cone drum 1; the water discharge pipe 6 is provided with an annular section 51, the annular section 51 is respectively connected with the water guide pipes 4, a bypass pipe is not needed to be additionally arranged, the processing and the transportation are simpler, and as shown in the figure, in the embodiment, the water guide pipes 4 are preferably but not limited to 4 water guide pipes.
The sedimentation cone 1 is led out from the lower port of the sedimentation cone 1 by adopting hoses as the drain pipe 5 and the water diversion pipe 4, and the drain pipe forms an annular pipe structure outside the lower port of the sedimentation cone 1, so that the wall of the sedimentation cone 1 is not provided with barriers such as bypass branch pipes, so that the wall of the sedimentation cone is as smooth as possible, and the sedimentation cone is convenient for large-scale installation and transportation;
preferably, the upper port of the air-repellent cylinder 2 is not higher than the upper port of the precipitation cone cylinder 1.
In the construction process, a mud collecting cone 6 is firstly erected, a precipitation cone 1 is arranged on the mud collecting cone, and a dredge cylinder 2 and a water collecting tank 3 are sequentially arranged on the precipitation cone. During installation, the mud collecting cone 6 and the sedimentation cone 1 are respectively fixed by adopting towers, and the dredge cylinder 2 and the water collecting tank 3 are installed by adopting a steel frame arranged on the inner side wall of the sedimentation cone 1.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. An activated sludge precipitation device placed in an aeration tank, which is characterized in that: the device comprises a sedimentation cone cylinder and a mud collecting cone cylinder, wherein the upper end and the lower end of the sedimentation cone cylinder are both provided with openings, the sedimentation cone cylinder and the mud collecting cone cylinder are both inverted, the sedimentation cone cylinder is arranged above the mud collecting cone cylinder, the lower port of the sedimentation cone cylinder extends into the upper port of the mud collecting cone cylinder, and a mixed liquid channel for aeration mixed liquid to pass through is formed between the sedimentation cone cylinder and the mud collecting cone cylinder; the sedimentation cone is internally provided with a sedimentation cone with two open ends, the inner wall surface of the sedimentation cone and the inner wall surface of the sedimentation cone jointly define an inner sedimentation area communicated with the lower port of the sedimentation cone, the outer wall surface of the sedimentation cone and the inner wall surface of the sedimentation cone jointly define an outer sedimentation area, and a separation liquid channel communicated with the inner sedimentation area and the outer sedimentation area is formed between the lower end of the sedimentation cone and the inner wall surface of the sedimentation cone;
the ratio of the diameter of the lower port of the precipitation cone to the diameter of the upper port of the mud collection cone is 2/3-4/5;
the water collecting tank is arranged in the precipitation cone barrel and is positioned in an external precipitation area; the drain pipe is communicated with the water collecting tank.
2. An activated sludge settling device in an aeration tank as claimed in claim 1, wherein: the water collecting tank is communicated with the water collecting pipe through the water collecting pipe; the water guide pipe extends along the inner wall of the precipitation cone barrel, passes through the separation liquid channel and extends out of the lower port of the precipitation cone barrel to be connected with the drain pipe.
3. An activated sludge settling device in an aeration tank as claimed in claim 1, wherein: the water collecting tank is provided with a water collecting weir.
4. An activated sludge settling device in an aeration tank as claimed in claim 2, wherein: the water collecting tank is an annular groove and is arranged around the periphery of the air-repellent cylinder.
5. An activated sludge settling device in an aeration tank as claimed in claim 4, wherein: the plurality of water diversion pipes are uniformly arranged along the circumferential direction of the inner side wall of the precipitation cone barrel; the drain pipe is provided with an annular section which is respectively connected with a plurality of water diversion pipes.
6. An activated sludge settling device in an aeration tank as claimed in claim 1, wherein: the upper port of the air-repellent cylinder is flush with the upper port of the precipitation cone cylinder.
7. An activated sludge settling device in an aeration tank as claimed in claim 1, wherein: the device also comprises a mud discharging pipe, wherein the mud discharging pipe is connected with the lower port of the mud collecting cone.
8. An activated sludge settling device in an aeration tank as claimed in claim 1, wherein: the air-repellent cylinder is also in a conical structure, and the air-repellent cylinder is positively arranged in the precipitation conical cylinder.
9. An activated sludge settling device in an aeration tank as claimed in claim 8, wherein: the sedimentation cone cylinder, the dredge cylinder and the sludge collecting cone cylinder are cone cylinders.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611249932.5A CN106745706B (en) | 2016-12-29 | 2016-12-29 | Activated sludge precipitation device placed in aeration tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611249932.5A CN106745706B (en) | 2016-12-29 | 2016-12-29 | Activated sludge precipitation device placed in aeration tank |
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| CN106745706A CN106745706A (en) | 2017-05-31 |
| CN106745706B true CN106745706B (en) | 2023-06-27 |
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| CN107252575A (en) * | 2017-06-20 | 2017-10-17 | 浦华环保股份有限公司 | One kind folding umbrella-type activated sludge settling vessel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19622348C1 (en) * | 1996-06-04 | 1998-03-12 | Aquatec Wasseraufbereitung Pro | Water treatment assembly |
| CN201056519Y (en) * | 2007-04-28 | 2008-05-07 | 河北科技大学 | Three-phase separator of upflow type anaerobic reactor |
| CN101691256A (en) * | 2009-09-08 | 2010-04-07 | 南开大学 | Tri-phase separator of anaerobic reactor |
| CN103143193A (en) * | 2013-04-01 | 2013-06-12 | 哈尔滨工业大学 | Vertical-flow sedimentation tank with sloping plate assembly |
| CN204058093U (en) * | 2014-08-18 | 2014-12-31 | 青岛中清能生物能源有限公司 | Sludge settling tank |
-
2016
- 2016-12-29 CN CN201611249932.5A patent/CN106745706B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19622348C1 (en) * | 1996-06-04 | 1998-03-12 | Aquatec Wasseraufbereitung Pro | Water treatment assembly |
| CN201056519Y (en) * | 2007-04-28 | 2008-05-07 | 河北科技大学 | Three-phase separator of upflow type anaerobic reactor |
| CN101691256A (en) * | 2009-09-08 | 2010-04-07 | 南开大学 | Tri-phase separator of anaerobic reactor |
| CN103143193A (en) * | 2013-04-01 | 2013-06-12 | 哈尔滨工业大学 | Vertical-flow sedimentation tank with sloping plate assembly |
| CN204058093U (en) * | 2014-08-18 | 2014-12-31 | 青岛中清能生物能源有限公司 | Sludge settling tank |
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