CN108249573B - Biological purification tank for sewage treatment - Google Patents
Biological purification tank for sewage treatment Download PDFInfo
- Publication number
- CN108249573B CN108249573B CN201810343356.3A CN201810343356A CN108249573B CN 108249573 B CN108249573 B CN 108249573B CN 201810343356 A CN201810343356 A CN 201810343356A CN 108249573 B CN108249573 B CN 108249573B
- Authority
- CN
- China
- Prior art keywords
- tank body
- pipe
- zone
- tank
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 65
- 238000000746 purification Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000004062 sedimentation Methods 0.000 claims abstract description 34
- 238000005273 aeration Methods 0.000 claims abstract description 31
- 239000008213 purified water Substances 0.000 claims abstract description 6
- 230000014759 maintenance of location Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 244000005700 microbiome Species 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000003203 everyday effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- 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
-
- 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
- C02F2301/02—Fluid flow conditions
- C02F2301/028—Tortuous
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
The application provides a biological purification tank for sewage treatment, which comprises an inner tank body, a middle tank body, an outer tank body, a water inlet pipe, a water outlet pipe, a gas stripping return pipe, an aeration pipe and an air inlet pipe; in the application, sewage enters the biological purification tank from the bottom of the anaerobic zone, turns to upward flow, then enters the aerobic zone from the diversion hole, then downward flows, then enters the sedimentation zone, and upward flows, finally purified water flows out of the water outlet pipe, the sewage flows in the biological purification tank in a vertical baffling way, the stroke is long, the hydraulic retention time is long, the water flow direction in the aeration zone is opposite to the aeration air flow direction, the contact surface between the water phase and the gas phase is larger, and the aeration is more uniform; because the three tanks are concentrically nested together and are vertical tank bodies, the occupied area is smaller than that of other types of sewage equipment after the three tanks are buried underground; the small-sized distributed sewage treatment equipment is suitable for places with fewer sewage generated daily, small in occupied area, good in treatment effect, convenient to operate and low in power consumption.
Description
Technical Field
The invention relates to the technical field of sewage treatment equipment, in particular to a biological purification tank for sewage treatment.
Background
In most rural areas in China, farmers living in a scattered way, a sewage pipe network is not sound, and a large amount of village and town domestic sewage is directly discharged into surrounding water bodies without treatment, so that water body eutrophication is caused. Aiming at the sewage which is produced by rural single-family and multi-family type sewage, such as farms and families in tourist attractions, and the like, and has a small quantity of sewage produced every day, the market needs small-sized distributed sewage treatment equipment which occupies small area, has good treatment effect, is convenient to operate and consumes less power.
The current sewage treatment mode commonly used in China rural areas is as follows: (1) The septic tank only has the functions of precipitation and decomposition, and basically has no degradation effect on pollutants; (2) The constructed wetland can play a certain role in degradation in the early construction stage, is very easy to block after being used for a few years, and has poorer water outlet effect when plants wither or grow poorly in winter; (3) The sewage treatment equipment based on the traditional structure by the biological contact oxidation method is formed by connecting all reaction tanks in series, and has large occupied area, high energy consumption, complex system and difficult management; (4) Sewage treatment equipment based on MBR membranes has good treatment effect, but has high energy consumption, requires professional personnel to wash and replace membrane components, and is basically not suitable for rural sewage.
Therefore, how to provide a small-sized decentralized sewage treatment device which is suitable for places such as rural single-family and multi-family sewage and tourist attractions, which generate less sewage every day, and has the advantages of small occupied area, good treatment effect, convenient operation and low power consumption is a technical problem to be solved by the technicians in the field.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a biological purification tank for sewage treatment.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
A biological purification tank for sewage treatment comprises an inner tank body, a middle tank body, an outer tank body, a water inlet pipe, a water outlet pipe, a gas stripping return pipe, an aeration pipe and an air inlet pipe;
The inner layer tank body, the middle layer tank body and the outer layer tank body are vertical tank bodies and are sequentially arranged from inside to outside, the inner layer tank body is sleeved in the middle layer tank body, and the middle layer tank body is sleeved in the outer layer tank body;
The inner cavity of the inner tank body is filled with biological filler to form an anaerobic zone, and an aeration pipe for stirring sewage is arranged at the inner bottom of the inner tank body;
The cavity between the inner tank body and the middle tank body is filled with biological filler to form an aerobic zone, an aeration pipe for supplying oxygen to microorganisms is arranged at the inner bottom of the aerobic zone, and the aerobic zone is communicated with an anaerobic zone for sewage to flow into the aerobic zone from the anaerobic zone;
the cavity between the outer layer tank body and the middle layer tank body is a sedimentation zone, and the sedimentation zone is communicated with an aerobic zone for sewage to flow into the sedimentation zone from the aerobic zone;
The horizontal section of the water inlet pipe sequentially penetrates through the outer layer tank body, the middle layer tank body and the inner layer tank body from outside to inside along the horizontal direction, and the vertical section of the water inlet pipe downwards extends in the anaerobic zone along the vertical direction until reaching the inner lower part of the anaerobic zone;
one end of the water outlet pipe is communicated with the inner upper part of the sedimentation zone, and the other end of the water outlet pipe is opened on the outer surface of the tank wall of the outer tank body;
One end of the gas stripping return pipe is arranged at the lower part of the sedimentation zone, the other end of the gas stripping return pipe is communicated with the vertical section of the water inlet pipe, and the bottom of the gas stripping return pipe is communicated with the air inlet pipe through a branch air pipe so as to be used for providing power gas for returning sewage in the sedimentation zone to the anaerobic zone;
The air inlet of the aeration pipe is communicated with the air inlet pipe through a branch air pipe;
the air inlet of the air inlet pipe is opened on the outer surface of the tank wall of the outer tank body and is communicated with the air pump.
Preferably, the inner tank body, the middle tank body and the outer tank body are arranged in concentric circles;
a plurality of diversion holes for sewage to overflow from the anaerobic zone to enter the aerobic zone are formed in the tank wall at the upper part of the inner tank body;
The anaerobic zone is communicated with the aerobic zone only through the diversion holes, the aerobic zone is communicated with the sedimentation zone only at the bottom, so that water enters the biological purification tank from the bottom of the anaerobic zone and then turns to flow upwards, then enters the aerobic zone from the diversion holes and then flows downwards, then enters the sedimentation zone and then flows upwards, and finally flows out of the water outlet pipe.
Preferably, the upper part of the outer layer tank body is a cylindrical tank body and the lower part of the outer layer tank body is an inverted circular table tank body;
The sewage treatment device is characterized in that an inverted cone pipe is arranged on the peripheral outer tank wall surface of the bottom of the middle tank body, the cross section of the pipe wall of the inverted cone pipe is corrugated, the corrugated protruding portion of the inverted cone pipe is erected on the inner wall surface of the inverted cone tank body, and the corrugated recessed portion of the inverted cone pipe and the inner wall surface of the inverted cone tank body are provided with a plurality of diversion trenches for sewage to flow into the sedimentation zone from the aerobic zone.
Preferably, a water collecting pipe is arranged at the upper part in the sedimentation zone, and a plurality of water collecting holes are formed in the upper wall surface of the water collecting pipe so that surface purified water in the sedimentation zone enters the water collecting pipe through the water collecting holes and then flows to the water outlet pipe.
Preferably, the novel water tank further comprises a top cover, the top cover is connected with the top of the outer tank body through bolts, at least one access hole is formed in the top cover, and an access hole cover plate is arranged on the access hole.
Preferably, the position where the top cover is connected with the outer layer tank body is higher than the position of the water outlet pipe, so that the tank body below the water level line is an integral body, and no leakage point below the water level line is ensured.
Preferably, a plurality of transverse protrusions and a plurality of longitudinal protrusions which are distributed in a crossing manner are arranged on the outer surface of the tank wall of the outer tank body so as to ensure that the outer tank body has enough ring rigidity and compressive strength.
Preferably, the tank bottom of the inner tank body is placed on the inner tank bottom of the outer tank body, and the inner tank body and the outer tank body are independent and concentric.
Preferably, each branch air pipe is provided with a regulating valve for regulating the air inlet flow.
The application provides a biological purification tank for sewage treatment, which comprises an inner tank body, a middle tank body, an outer tank body, a water inlet pipe, a water outlet pipe, a gas stripping return pipe, an aeration pipe and an air inlet pipe; in the application, sewage enters the biological purification tank from the bottom of the anaerobic zone, turns to upward flow, then enters the aerobic zone from the diversion hole, then downward flows, then enters the sedimentation zone, and upward flows, finally purified water flows out of the water outlet pipe, the sewage flows in the biological purification tank in a vertical baffling way, the stroke is long, the hydraulic retention time is long, the water flow direction in the aeration zone is opposite to the aeration air flow direction, the contact surface between the water phase and the gas phase is larger, and the aeration is more uniform; because the three tanks are concentrically nested together and are vertical tank bodies, the occupied area is smaller than that of other types of sewage equipment after the three tanks are buried underground; the small-sized distributed sewage treatment equipment is suitable for places such as rural single-family and multi-family sewage, farmhouses in tourist attractions and the like which generate less sewage every day, and has the advantages of small occupied area, good treatment effect, convenient operation and low power consumption.
Drawings
FIG. 1 is a schematic top view of a biological purification tank for wastewater treatment according to an embodiment of the present invention (FIG. 1 is a schematic top view with a top cover removed);
FIG. 2 is a schematic view of the cross-sectional structure of the A-A direction of FIG. 1;
Fig. 3 is a schematic view of the B-B cross-sectional structure of fig. 1.
In the figure: 1 horizontal section, 2 outer jar body, 3 middle layer jar body, 4 inlayer jar body, 5 vertical section, 6 outlet pipe, 7 collector pipe, 8 intake pipe, 9 air stripping back flow, 11 branch trachea, 12 aeration pipe, 13 back taper pipe, 14 biofilm carrier, 15 water conservancy diversion hole, 16 access panel, 17 top cap.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "axial," "radial," "longitudinal," "transverse," "length," "width," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly.
In the present invention, unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is less level than the second feature.
Referring to fig. 1 and 2, fig. 1 is a schematic top view of a biological purification tank for sewage treatment according to an embodiment of the present invention (fig. 1 is a schematic top view with a top cover removed); FIG. 2 is a schematic view of the cross-sectional structure of the A-A direction of FIG. 1; fig. 3 is a schematic view of the B-B cross-sectional structure of fig. 1.
The application provides a biological purification tank for sewage treatment, which comprises an inner tank body 4, a middle tank body 3, an outer tank body 2, a water inlet pipe, a water outlet pipe 6, a gas stripping return pipe 9, an aeration pipe 12 and an air inlet pipe 8;
The inner layer tank body 4, the middle layer tank body 3 and the outer layer tank body 2 are vertical tank bodies and are sequentially arranged from inside to outside, the inner layer tank body 4 is sleeved in the middle layer tank body 3, and the middle layer tank body 3 is sleeved in the outer layer tank body 2;
The inner cavity of the inner tank body 4 is filled with biological filler 14 to form an anaerobic zone, and an aeration pipe 12 for stirring sewage is arranged at the inner bottom of the inner tank body 4;
The cavity between the inner tank body 4 and the middle tank body 3 is filled with biological filler 14 to form an aerobic zone, an aeration pipe 12 for supplying oxygen to microorganisms is arranged at the inner bottom of the aerobic zone, and the aerobic zone is communicated with an anaerobic zone for sewage to flow into the aerobic zone from the anaerobic zone;
the cavity between the outer layer tank body 2 and the middle layer tank body 3 is a sedimentation zone, and the sedimentation zone is communicated with the aerobic zone so as to be used for sewage to flow into the sedimentation zone from the aerobic zone;
The horizontal section 1 of the water inlet pipe sequentially penetrates through the outer layer tank body 2, the middle layer tank body 3 and the inner layer tank body 4 from outside to inside along the horizontal direction, and the vertical section 5 of the water inlet pipe extends downwards in the vertical direction in the anaerobic zone until reaching the inner lower part of the anaerobic zone;
one end of the water outlet pipe 6 is communicated with the inner upper part of the sedimentation zone, and the other end of the water outlet pipe 6 is opened on the outer surface of the tank wall of the outer tank body 2;
One end of the gas stripping return pipe 9 is arranged at the lower part of the sedimentation zone, the other end of the gas stripping return pipe 9 is communicated with the vertical section of the water inlet pipe, and the bottom of the gas stripping return pipe 9 is communicated with the air inlet pipe 8 through a branch air pipe 11 so as to be used for providing power gas for returning sewage in the sedimentation zone to the anaerobic zone;
the air inlet of the aeration pipe 12 is communicated with the air inlet pipe 8 through a branch air pipe 11;
the air inlet of the air inlet pipe 8 is opened on the outer surface of the tank wall of the outer tank body 2 and is used for communicating with an air pump.
In one embodiment of the application, the inner tank body 4, the middle tank body 3 and the outer tank body 2 are arranged in concentric circles;
a plurality of diversion holes 15 for sewage to overflow from the anaerobic zone to the aerobic zone are formed in the tank wall at the upper part of the inner tank body 4;
The anaerobic zone is communicated with the aerobic zone only through the diversion holes 15, the aerobic zone is communicated with the sedimentation zone only at the bottom, so that water enters the biological purification tank from the bottom of the anaerobic zone and then turns to flow upwards, then enters the aerobic zone from the diversion holes 15 and then flows downwards, then enters the sedimentation zone and then flows upwards, and finally flows out of the water outlet pipe 6.
In one embodiment of the application, the upper part of the outer layer tank body 2 is a cylindrical tank body and the lower part is an inverted circular table tank body;
The sewage treatment device is characterized in that an inverted cone pipe 13 is arranged on the peripheral outer tank wall surface of the bottom of the middle tank body 3, the cross section of the pipe wall of the inverted cone pipe 13 is corrugated, the corrugated protruding portion of the inverted cone pipe 13 is erected on the inner wall surface of the inverted cone tank body, and the corrugated recessed portion of the inverted cone pipe and the inner wall surface of the inverted cone tank body are provided with a plurality of diversion trenches for sewage to flow into a sedimentation zone from an aerobic zone.
In one embodiment of the application, the upper part in the sedimentation zone is provided with a water collecting pipe 7, and the upper wall surface of the water collecting pipe 7 is provided with a plurality of water collecting holes for surface purified water in the sedimentation zone to enter the water collecting pipe 7 through the water collecting holes and then flow to the water outlet pipe 6.
In one embodiment of the present application, the above biological purification tank further comprises a top cover 17, wherein the top cover 17 is connected with the top of the outer tank 2 through bolts, at least one access opening is arranged on the top cover 17, and an access opening cover plate 16 is arranged on the access opening.
In one embodiment of the present application, the top cover 17 is connected to the outer tank 2 at a position higher than the position of the water outlet pipe 6, so that the tank below the water level is an integral body and no leakage point below the water level is ensured.
In one embodiment of the present application, a plurality of transverse protrusions and a plurality of longitudinal protrusions are disposed on the outer surface of the tank wall of the outer tank 2, which are distributed to cross each other, so as to ensure that the outer tank 2 has sufficient ring stiffness and compressive strength.
In one embodiment of the application, the tank bottom of the inner tank body 4 is placed on the inner tank bottom of the outer tank body 2, and the inner tank body 4 and the outer tank body 2 are independent and concentric.
In one embodiment of the present application, each branch air pipe 11 is provided with a regulating valve for regulating the flow rate of the intake air.
The application provides a biological purification tank for sewage treatment, which comprises an inner tank body 4, a middle tank body 3, an outer tank body 2, a water inlet pipe, a water outlet pipe 6, a gas stripping return pipe 9, an aeration pipe 12 and an air inlet pipe 8; in the application, sewage enters the biological purification tank from the bottom of the anaerobic zone and turns to upward flow, then enters the aerobic zone from the diversion hole 15 and then downward flows, then enters the sedimentation zone and then upward flows, finally purified water flows out of the water outlet pipe 6, the sewage flows in the biological purification tank in a vertical baffling way, the travel is long, the hydraulic retention time is long, the water flow direction in the aeration zone is opposite to the aeration air flow direction, the contact surface between the water phase and the gas phase is larger, and the aeration is more uniform; because the three tanks are concentrically nested together and are vertical tank bodies, the occupied area is smaller than that of other types of sewage equipment after the three tanks are buried underground; the small-sized distributed sewage treatment equipment is suitable for places such as rural single-family and multi-family sewage, farmhouses in tourist attractions and the like which generate less sewage every day, and has the advantages of small occupied area, good treatment effect, convenient operation and low power consumption.
The method and the device which are not described in detail in the invention are all the prior art and are not described in detail.
The principles and embodiments of the present invention have been described herein with reference to specific examples, which are intended to be merely illustrative of the methods of the present invention and their core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (7)
1. The biological purification tank for sewage treatment is characterized by comprising an inner tank body, a middle tank body, an outer tank body, a water inlet pipe, a water outlet pipe, a gas stripping return pipe, an aeration pipe and an air inlet pipe;
The inner layer tank body, the middle layer tank body and the outer layer tank body are vertical tank bodies and are sequentially arranged from inside to outside, the inner layer tank body is sleeved in the middle layer tank body, and the middle layer tank body is sleeved in the outer layer tank body;
The inner cavity of the inner tank body is filled with biological filler to form an anaerobic zone, and an aeration pipe for stirring sewage is arranged at the inner bottom of the inner tank body;
The cavity between the inner tank body and the middle tank body is filled with biological filler to form an aerobic zone, an aeration pipe for supplying oxygen to microorganisms is arranged at the inner bottom of the aerobic zone, and the aerobic zone is communicated with an anaerobic zone for sewage to flow into the aerobic zone from the anaerobic zone;
the cavity between the outer layer tank body and the middle layer tank body is a sedimentation zone, and the sedimentation zone is communicated with an aerobic zone for sewage to flow into the sedimentation zone from the aerobic zone;
The horizontal section of the water inlet pipe sequentially penetrates through the outer layer tank body, the middle layer tank body and the inner layer tank body from outside to inside along the horizontal direction, and the vertical section of the water inlet pipe downwards extends in the anaerobic zone along the vertical direction until reaching the inner lower part of the anaerobic zone;
one end of the water outlet pipe is communicated with the inner upper part of the sedimentation zone, and the other end of the water outlet pipe is opened on the outer surface of the tank wall of the outer tank body;
One end of the gas stripping return pipe is arranged at the lower part of the sedimentation zone, the other end of the gas stripping return pipe is communicated with the vertical section of the water inlet pipe, and the bottom of the gas stripping return pipe is communicated with the air inlet pipe through a branch air pipe so as to be used for providing power gas for returning sewage in the sedimentation zone to the anaerobic zone;
The air inlet of the aeration pipe is communicated with the air inlet pipe through a branch air pipe;
an air inlet of the air inlet pipe is opened on the outer surface of the tank wall of the outer tank body and is communicated with the air pump;
The inner tank body, the middle tank body and the outer tank body are arranged in concentric circles;
a plurality of diversion holes for sewage to overflow from the anaerobic zone to enter the aerobic zone are formed in the tank wall at the upper part of the inner tank body;
The anaerobic zone and the aerobic zone are communicated only through the diversion holes, the aerobic zone and the sedimentation zone are communicated only at the bottom so that water enters the biological purification tank from the bottom of the anaerobic zone and turns to flow upwards, then enters the aerobic zone from the diversion holes and flows downwards, then enters the sedimentation zone and flows upwards, finally flows out of the water outlet pipe, sewage flows in the biological purification tank in a baffling way up and down, the travel is long, the hydraulic retention time is long, the water flow direction in the aeration zone is opposite to the aeration air flow direction, the contact surface between the water phase and the gas phase is larger, and the aeration is more uniform;
The tank bottom of the inner tank body is arranged on the inner tank bottom of the outer tank body, and the inner tank body and the outer tank body are independent and concentric;
The sewage advances in the biological purification tank in a vertical baffling way, the travel is long, the hydraulic retention time is long, the water flow direction in the aeration area is opposite to the aeration air flow direction, the contact surface between the water phase and the gas phase is larger, and the aeration is more uniform.
2. The biological purification tank of claim 1, wherein the upper portion of the outer tank is a cylindrical tank and the lower portion is an inverted cone tank;
The sewage treatment device is characterized in that an inverted cone pipe is arranged on the peripheral outer tank wall surface of the bottom of the middle tank body, the cross section of the pipe wall of the inverted cone pipe is corrugated, the corrugated protruding portion of the inverted cone pipe is erected on the inner wall surface of the inverted cone tank body, and the corrugated recessed portion of the inverted cone pipe and the inner wall surface of the inverted cone tank body are provided with a plurality of diversion trenches for sewage to flow into the sedimentation zone from the aerobic zone.
3. The biological purification tank of claim 1, wherein a water collecting pipe is provided at an upper portion of the settling zone, and a plurality of water collecting holes are provided on an upper wall surface of the water collecting pipe for surface purified water of the settling zone to enter the water collecting pipe through the water collecting holes and then flow to the water outlet pipe.
4. The biological purification tank of claim 1, further comprising a top cover bolted to the top of the outer tank, wherein the top cover is provided with at least one access opening, and wherein the access opening is provided with an access opening cover plate.
5. The biological purification tank of claim 4, wherein the top cover is connected to the outer tank at a position higher than the water outlet pipe so that the tank below the water line is an integral body and no leakage point below the water line is ensured.
6. The biological purification tank of claim 1, wherein the outer surface of the tank wall of the outer tank body is provided with a plurality of transverse protrusions and a plurality of longitudinal protrusions which are distributed in a mutually crossed manner so as to ensure that the outer tank body has sufficient ring rigidity and compressive strength.
7. The biological purification tank of claim 1, wherein each branch air pipe is provided with a regulating valve for regulating the flow of the intake air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343356.3A CN108249573B (en) | 2018-04-17 | 2018-04-17 | Biological purification tank for sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343356.3A CN108249573B (en) | 2018-04-17 | 2018-04-17 | Biological purification tank for sewage treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108249573A CN108249573A (en) | 2018-07-06 |
| CN108249573B true CN108249573B (en) | 2024-04-30 |
Family
ID=62748387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810343356.3A Active CN108249573B (en) | 2018-04-17 | 2018-04-17 | Biological purification tank for sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108249573B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179908B (en) * | 2018-10-29 | 2024-07-02 | 武汉千瑞泰环境科技有限公司 | Assembled A/O pond and assembled sewage treatment system |
| CN110922014A (en) * | 2019-12-30 | 2020-03-27 | 陕西新泓水艺环境科技有限公司 | Integrated treatment equipment for excrement |
| CN111362409A (en) * | 2020-04-02 | 2020-07-03 | 中原环保郑州设备工程科技有限公司 | Domestic sewage treatment purifying tank |
| CN112678953A (en) * | 2020-11-11 | 2021-04-20 | 云南岩语轩环境工程有限公司 | Energy-saving nitrogen and phosphorus removal integrated treatment biological purification tank |
| CN112811591A (en) * | 2020-12-30 | 2021-05-18 | 云南英诺威环境工程有限公司 | Efficient biological reaction purification tank and purification treatment method |
| CN112777743A (en) * | 2020-12-30 | 2021-05-11 | 云南英诺威环境工程有限公司 | Purifying tank for sewage treatment of villages and towns and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269881A (en) * | 2008-04-23 | 2008-09-24 | 浙江德安新技术发展有限公司 | Inner loop liquefaction biological reaction apparatus for wastewater treatment |
| CN101792215A (en) * | 2009-12-30 | 2010-08-04 | 中国科学院生态环境研究中心 | Multi-level two-layer returning water-spreading drop oxygenating method and device |
| CN104961232A (en) * | 2015-06-16 | 2015-10-07 | 徐州工程学院 | Vertical integral sewage treatment plant |
| CN208327523U (en) * | 2018-04-17 | 2019-01-04 | 青岛沃安环境科技有限公司 | A kind of biologic purifying pot for sewage treatment |
-
2018
- 2018-04-17 CN CN201810343356.3A patent/CN108249573B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269881A (en) * | 2008-04-23 | 2008-09-24 | 浙江德安新技术发展有限公司 | Inner loop liquefaction biological reaction apparatus for wastewater treatment |
| CN101792215A (en) * | 2009-12-30 | 2010-08-04 | 中国科学院生态环境研究中心 | Multi-level two-layer returning water-spreading drop oxygenating method and device |
| CN104961232A (en) * | 2015-06-16 | 2015-10-07 | 徐州工程学院 | Vertical integral sewage treatment plant |
| CN208327523U (en) * | 2018-04-17 | 2019-01-04 | 青岛沃安环境科技有限公司 | A kind of biologic purifying pot for sewage treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108249573A (en) | 2018-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108249573B (en) | Biological purification tank for sewage treatment | |
| CN203639289U (en) | Efficient nitrogen and phosphorus removal hybrid bioreactor | |
| CN103387312B (en) | Multi-stage biological contact oxidation reactor sewage disposal device | |
| CN103708627A (en) | Integrated domestic-sewage treatment device with biological rotating discs and treatment method thereof | |
| CN100540487C (en) | Integrated high concentration difficult degradable sewage processor | |
| CN203238141U (en) | Sewage biological treatment membrane filtration system | |
| CN112679040A (en) | Constructed wetland-biomembrane combined sewage treatment system and treatment process | |
| CN107162191A (en) | A kind of countryside sewage treatment equipment | |
| CN202046977U (en) | Anaerobic-aerobic integrated reactor | |
| CN209835885U (en) | Rural sewage treatment plant of little ecological integration of many units | |
| CN203904147U (en) | Efficient low-energy-consumption sewage treatment device | |
| CN106145356A (en) | Integral type sewage processing means and processing method | |
| CN202610070U (en) | Integration sanitary sewage treatment device | |
| CN101475263B (en) | High organic substance and high ammonia nitrogen waste water biological treatment apparatus | |
| CN201694898U (en) | Diffusion-type aerator | |
| CN209759234U (en) | Integrated sewage treatment device | |
| CN110092548B (en) | Tubular rural domestic sewage and wastewater treatment device | |
| CN210595459U (en) | Integrated sewage treatment equipment | |
| CN101462795A (en) | Low energy consumption and high efficiency complete set apparatuses for domestic sewage treatment and odor purification | |
| CN201330214Y (en) | Integrated high-organic matter and high-ammonia nitrogen waste water biological treatment device | |
| CN216236578U (en) | Batch water inlet integrated sewage treatment device | |
| CN204625285U (en) | Integration microkinetic oxygenation waste disposal plant | |
| CN110550811A (en) | A 2 O-MBBR sewage treatment plant with strengthen dephosphorization function | |
| CN220376484U (en) | Integrated sewage treatment device | |
| CN220300577U (en) | Function-differentiating integrated sewage treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |