CN107176768B - Method and device for treating domestic sewage by using vertical flow - Google Patents
Method and device for treating domestic sewage by using vertical flow Download PDFInfo
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- CN107176768B CN107176768B CN201710594162.6A CN201710594162A CN107176768B CN 107176768 B CN107176768 B CN 107176768B CN 201710594162 A CN201710594162 A CN 201710594162A CN 107176768 B CN107176768 B CN 107176768B
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- 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
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F3/08—Aerobic processes using moving contact bodies
- C02F3/085—Fluidized beds
- C02F3/087—Floating beds with contact bodies having a lower density than water
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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
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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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
- C02F3/28—Anaerobic digestion processes
- C02F3/2833—Anaerobic digestion processes using fluidized bed reactors
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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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
Abstract
The invention discloses a method and a device for treating domestic sewage by using vertical flow. The impeller flow guide device is arranged at the bottom of the anoxic reaction tank, and rotates under the impact of water inflow to drive sewage and filler to be mixed and form rotary and vertical upward flow, the anoxic suspended biological filler attached with a biological film circularly moves with the water flow, no dead angle exists in the anoxic reaction tank, the flow field distribution is ideal, the volume utilization rate of the reaction tank is high, a stirrer is not arranged in the reaction tank, no energy consumption exists, and the service life of the filler is long; through special aqueduct structure, make rivers form the whirl flow of horizontal direction and the ascending (or decline) flow of vertical direction in the good oxygen reaction tank, the good oxygen suspension biofilm carrier that has the biomembrane is with rivers circulation motion, does not have the dead angle in the good oxygen reaction tank, forms comparatively ideal flow field distribution, forms perpendicular mixed flow, can avoid reactor bottom mud to deposit completely, greatly improves reaction efficiency and reactor volume utilization ratio.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a method and a device for treating domestic sewage by using vertical flow.
Background
At present, the small-sized decentralized sewage treatment process is more, but the investment, the cost, the implementation, the water outlet stability, the operation management and the like have more problems in actual operation. The invention aims to provide the integrated equipment for the decentralized sewage treatment, which has the advantages of long service life, small investment, high efficiency, stable operation, low treatment cost and simple maintenance, and the treated water quality can meet the requirements of emission, recycling, agricultural irrigation and the like.
With the improvement of urban process and rural living standard, the average water consumption of residents is gradually increased, the discharge amount of domestic sewage is continuously increased, the pipe network investment and the engineering amount are large due to the fact that the urban sewage treatment plant is far away, and the domestic sewage in most areas is directly discharged into natural water bodies without treatment, so that the tendency of eutrophication of natural water bodies such as rivers, reservoirs and the like is gradually serious, blue algae burst in partial water areas and the water quality of the water bodies is seriously deteriorated.
Meanwhile, due to the development of traffic construction and tourism economy, a large number of places such as service areas, hotels, guesthouses, farms, tourist attractions and the like are arranged around roads and cities and are far away from municipal sewage collection pipe networks, so that effective collection and treatment are not realized, and pollution is caused to surrounding environments.
In summary, the relatively dispersed sewage is difficult to collect and treat in a large scale in municipal sewage system, so that serious pollution is caused to the surrounding environment, and the treatment of the dispersed sewage becomes an important direction for solving the non-point source environment pollution.
At present, the small-sized decentralized sewage treatment process is more, but the investment, the cost, the implementation, the water outlet stability, the operation management and the like have more problems in actual operation.
Disclosure of Invention
The purpose of the invention is that: the method and the device for treating the domestic sewage by utilizing the vertical flow have the advantages of small volume, long service life, small investment, high efficiency, stable operation, low treatment cost and simple maintenance, and can overcome the defects of the prior art.
The invention is realized in the following way: the method for treating domestic sewage by using vertical flow comprises the steps of pumping sewage into an anoxic reaction tank by using a water pump, driving a pulsator flow guiding device arranged in the anoxic reaction tank by using water flow pressure generated when the sewage is pumped, and enabling the pulsator flow guiding device to rotate, so as to drive anoxic reaction particle filler in the anoxic reaction tank to rotate, form upward flow, and fully mix the sewage with the anoxic reaction filler; after the sewage is reacted, the sewage enters an aerobic reaction tank A from the top in a rotational flow mode to form a rotational descending flow, then the sewage enters the bottom of an aerobic reaction tank B from the bottom of the aerobic reaction tank A in a rotational flow mode to form a rotational ascending flow in the aerobic reaction tank B, and the sewage is fully mixed with an aerobic reaction filler under the action of a flow field and drives the aerobic reaction filler to rotate; the bubbles generated by the aerobic reaction tank are cut by the rotating aerobic reaction filler in the rising process, the diameter is reduced, the dissolved oxygen efficiency is improved, part of bubbles are attached to the aerobic reaction filler, the density of the aerobic reaction filler is reduced, the density of the aerobic reaction filler is lower than that of water, the bubbles are lost in the rotating mixing process, the density of the bubbles is heavier than that of the water, and the bubbles naturally drop under the action of gravity, so that an aerobic suspension bed which is circularly and reciprocally mixed with sewage well is formed; and sequentially carrying out a sedimentation tank, a filter tank and a disinfection tank on the sewage after the aerobic reaction to finish subsequent treatment.
The vertical flow suspension bed integrated domestic sewage treatment device comprises an anoxic reaction tank, an aerobic reaction tank A and an aerobic reaction tank B, wherein anoxic reaction particle filler is arranged in the anoxic reaction tank, and a pulsator flow guiding device is arranged at the bottom in the anoxic reaction tank; the water inlet pipe enters the anoxic reaction tank from the upper part of the anoxic reaction tank, the water outlet of the water inlet pipe is positioned at the bottom in the anoxic reaction tank, and the water outlet direction is horizontally arranged corresponding to the flow guide wing plate of the impeller flow guide device; the upper part of the anoxic reaction tank is provided with a water outlet weir A, a water outlet hole of the water outlet weir A is communicated with a flow guide pipe A and a flow guide pipe B which are arranged at the upper part of the anoxic reaction tank A, the flow guide pipe A and the flow guide pipe B are arranged at the upper part of the anoxic reaction tank A in a clockwise direction or anticlockwise direction along the inner wall of the anoxic reaction tank A, the water outlet directions of the flow guide pipe A and the flow guide pipe B are mutually perpendicular, the aerobic reaction tank A is internally provided with aerobic reaction particle filling, the lower part of the anoxic reaction tank A is provided with a bottom water outlet hole, the bottom water outlet hole is connected with a flow guide pipe C and a flow guide pipe D, the flow guide pipe C and the flow guide pipe D are positioned at the bottom of the aerobic reaction tank B, the flow guide pipe C and the flow guide pipe D are arranged at the inner wall of the aerobic reaction tank B in a clockwise direction or anticlockwise direction, and the water outlet directions of the flow guide pipe C and the flow guide pipe D are mutually perpendicular; an effluent weir B is arranged at the upper part of the aerobic reaction tank B, and aeration devices are arranged at the bottoms of the aerobic reaction tank A and the aerobic reaction tank B; the upper part of the aerobic reaction tank B is communicated with the upper part of the sedimentation tank through a water outlet weir B, the upper part of the sedimentation tank is communicated with the upper part of the filter tank through a peripheral water outlet weir, and the lower part of the filter tank is communicated with the lower part of the disinfection tank through a pipeline.
A conical reflecting plate is arranged at the bottom of the central tube of the sedimentation tank. The water slowly rises while being diffused along the radial direction after being uniformly distributed along the center in the tank, and the water flow direction is opposite to the particle precipitation direction.
A perforated air pipe is arranged at the bottom of the sedimentation tank.
The top of the anoxic reaction tank, the aerobic reaction tank A, the aerobic reaction tank B, the sedimentation tank, the filter tank and the disinfection tank is provided with a top cover, and the top cover is provided with an overhaul port corresponding to each tank body.
Compared with the prior art, the invention has the advantages that the impeller flow guide device is arranged at the bottom of the anoxic reaction tank, the impeller flow guide device rotates under the impact of inflow water flow to drive sewage and filler to be mixed and form rotating and vertical ascending flow, the anoxic suspended biological filler attached with the biological film is circularly moved with the water flow, the sewage and the biological film filler are fully contacted and mixed, no dead angle exists in the anoxic reaction tank, the flow field distribution is ideal, the volume utilization rate of the reaction tank is high, the reaction tank is not provided with a stirrer, no energy consumption exists, and the service life of the filler is long; through special aqueduct structure, make rivers form the whirl of horizontal direction and the ascending (or decline) of vertical direction in the good oxygen reaction tank and flow circulation motion, the good oxygen suspension biofilm carrier of adhesion has no dead angle in the good oxygen reaction tank, form comparatively ideal flow field distribution, form perpendicular mixed flow, have good hydraulic condition and flow field distribution, can avoid reactor bottom mud to deposit completely, greatly improve reaction efficiency and reactor volume utilization, strengthen sewage and the contact and the mixing of microorganism item in the reactor, improve sewage treatment efficiency by a wide margin. The sewage is discharged or recycled after being treated by each mutually independent reaction tank in sequence, and the treatment process and the method have no specific requirements on the tank type (or shape) of the reactor, thereby being beneficial to the diversity of equipment manufacturing schemes. Under the action of the rotating vertical flow field, the sewage is interacted with a plurality of suspended bed biological film micro-reactors, and runs under the conditions of high volume rate, high biological phase and high dissolved oxygen efficiency, organic matters, ammonia nitrogen and other pollutants in the sewage are efficiently degraded and removed, and the reaction system has the advantages of low energy consumption, high efficiency and high impact load resistance. The invention has simple structure, low cost and good use effect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a flow chart of the use of the present invention;
FIG. 3 is a schematic structural view of the anoxic reaction tank of the present invention;
fig. 4 and 5 are schematic views of the rotational flow of the aerobic reaction tank according to the present invention.
Description of the embodiments
Embodiments of the invention: the method for treating domestic sewage by using vertical flow comprises the steps of pumping sewage into an anoxic reaction tank by using a water pump, driving a pulsator flow guiding device arranged in the anoxic reaction tank by using water flow pressure generated when the sewage is pumped, and enabling the pulsator flow guiding device to rotate, so as to drive anoxic reaction particle filler in the anoxic reaction tank to rotate, form upward flow, and fully mix the sewage with the anoxic reaction filler; after the sewage is reacted, the sewage enters an aerobic reaction tank A from the top in a rotational flow mode to form a rotational descending flow, then the sewage enters the bottom of an aerobic reaction tank B from the bottom of the aerobic reaction tank A in a rotational flow mode to form a rotational ascending flow in the aerobic reaction tank B, and the sewage is fully mixed with an aerobic reaction filler under the action of a flow field and drives the aerobic reaction filler to rotate; the bubbles generated by the aerobic reaction tank are cut by the rotating aerobic reaction filler in the rising process, the diameter is reduced, the dissolved oxygen efficiency is improved, part of bubbles are attached to the aerobic reaction filler, the density of the aerobic reaction filler is reduced, the density of the aerobic reaction filler is lower than that of water, the bubbles are lost in the rotating mixing process, the density of the bubbles is heavier than that of the water, and the bubbles naturally drop under the action of gravity, so that an aerobic suspension bed which is circularly and reciprocally mixed with sewage well is formed; and sequentially carrying out a sedimentation tank, a filter tank and a disinfection tank on the sewage after the aerobic reaction to finish subsequent treatment.
The vertical flow suspension bed integrated domestic sewage treatment device comprises an anoxic reaction tank 1, an aerobic reaction tank A2 and an aerobic reaction tank B3, wherein anoxic reaction filler 24 is arranged in the anoxic reaction tank 1, and a pulsator flow guiding device 8 is arranged at the bottom in the anoxic reaction tank 1; the water inlet pipe 7 enters the anoxic reaction tank 1 from the upper part of the anoxic reaction tank 1, the water outlet of the water inlet pipe 7 is positioned at the bottom in the anoxic reaction tank 1, and the water outlet direction is horizontally arranged corresponding to the flow guide wing plate of the impeller flow guide device 8; the upper part of the anoxic reaction tank 1 is provided with a water outlet weir A9, a water outlet hole of the water outlet weir A9 is communicated with a flow guide pipe A20 and a flow guide pipe B21 which are arranged at the upper part of the aerobic reaction tank A2, the flow guide pipe A20 and the flow guide pipe B21 are arranged at the upper part of the aerobic reaction tank A, the flow guide pipe A20 and the flow guide pipe B21 are arranged clockwise or anticlockwise along the inner wall of the aerobic reaction tank A2, the water outlet directions of the flow guide pipe A20 and the flow guide pipe B21 are mutually perpendicular, the aerobic reaction tank A2 is internally provided with an aerobic reaction filling 25, the lower part of the aerobic reaction tank A2 is provided with a bottom water outlet hole 11, the bottom water outlet hole 11 is connected with a flow guide pipe C22 and a flow guide pipe D23, the flow guide pipe C22 and the flow guide pipe D23 are arranged at the bottom of the aerobic reaction tank B3, the flow guide pipe C22 and the flow guide pipe D23 are arranged clockwise or anticlockwise along the inner wall of the aerobic reaction tank B3, and the water outlet directions of the flow guide pipe C22 and the flow guide pipe D23 are mutually perpendicular; an effluent weir B12 is arranged at the upper part of the aerobic reaction tank B3, and aeration devices 10 are arranged at the bottoms of the aerobic reaction tank A2 and the aerobic reaction tank B3; the upper part of the aerobic reaction tank B3 is communicated with the upper part of the sedimentation tank 4 through an effluent weir B12, the upper part of the sedimentation tank 4 is communicated with the upper part of the filter tank 5 through a peripheral effluent weir 16, and the lower part of the filter tank 5 is communicated with the lower part of the disinfection tank 6 through a pipeline; a conical reflecting plate 14 is arranged at the bottom of the central tube 13 of the sedimentation tank 4; a perforated air pipe 26 is arranged at the bottom of the sedimentation tank 4; the top of the anoxic reaction tank 1, the aerobic reaction tank A2, the aerobic reaction tank B3, the sedimentation tank 4, the filter tank 5 and the disinfection tank 6 is provided with a top cover 27, and the top cover is provided with an overhaul port 28 corresponding to each tank body.
The application flow of the invention is as follows:
1) The sewage self-adjusting pond is lifted to the anoxic reaction pond 1 through the water inlet pipe 7 under the action of a pump, water flow generated from the water outlet of the water inlet pipe 7 impacts the flow guide wing plate of the impeller flow guide device 8, so that the impeller flow guide device 8 rotates and drives sewage to be mixed and rotated with the attached anoxic reaction filler layer 24 to form a natural rising flow, a rotating vertical rising flow field shown in figure 3 is formed with the rotating flow, under the action of the mixing flow field, the sewage is fully mixed with filler particles of the anoxic reaction filler layer 24, the filler density of attached biological film is equivalent to that of water to form a biological film suspension bed, organic matters in the sewage are decomposed by the biological film on the filler particles, reactions such as denitrification and hydrolysis occur, and finally the organic matters flow out through the water outlet weir A9 at the top.
2) Sewage enters a guide pipe A20 and a guide pipe B21 through an effluent weir A9, the sewage entering the upper part of an aerobic reaction tank A2 through the guide pipe A20 and the guide pipe B21 forms a rotary flow, and the sewage forms a downward flow in the aerobic reaction tank A2; sewage enters the guide pipe C22 and the guide pipe D23 from the bottom water outlet hole 11 of the aerobic reaction tank A2, sewage flowing out of the guide pipe C22 and the guide pipe D23 enters from the bottom of the aerobic reaction tank B3 to form a rotary flow, a rotary descending (ascending) flow field is formed in the whole reactor under the combined action of two flows, and the sewage is fully mixed with the aerobic reaction filler layer 25 under the action of the flow field; the bottom of the two aerobic tanks are provided with the aeration device 10, the bubbles generated by the aeration device 10 are cut by the aerobic reaction filler layer 25 in the rising process, the diameter is reduced, the dissolved oxygen efficiency is improved, part of bubbles are attached to the aerobic reaction filler 25, the density of the aerobic reaction filler 25 is reduced, the density of the aerobic reaction filler 25 is slightly less than that of water, the bubbles are lost in the rotating mixing process, the density is slightly heavier than that of the water, and the gravity Zhong Yongxia naturally drops, so that the circulating aerobic suspension bed which is well mixed with sewage is formed. Organic matters in the sewage are decomposed by biological membranes on the filler particles, and a C removal reaction and a nitration reaction occur; as shown in fig. 4 and 5.
3) The sewage after the aerobic biochemical treatment enters a sedimentation tank 4 through an effluent weir B12, and the sewage in the sedimentation tank 4 enters the lower part of the sedimentation tank 4 from a central pipe 13 and is uniformly distributed into the sedimentation tank 4 through a conical reflecting plate 14; most suspended matters in the sewage sink into a mud bucket of the sedimentation tank in the radial diffusion and ascending movement process of the sewage, part of suspended matters are trapped by a inclined pipe 15 arranged in the sedimentation tank 4 and slide down into a sediment Chi Nidou, and the sedimented water enters the filter tank 5 from a peripheral water outlet weir 16.
4) Sludge in the sludge hopper of the sedimentation tank 4 is discharged through a sludge pipe 17 at the bottom of the hopper, part of the sludge enters the sludge tank, and part of the sludge returns to the anoxic reaction tank 1 for denitrification.
5) The water entering the filter tank 5 is uniformly distributed by the water distributor 17, filtered by the filter layer 18 and the filter plate 19, and enters the disinfection tank (clean water tank) from the bottom pipeline of the filter tank for treatment. The filter layer 18 can adopt filter materials such as quartz sand, active carbon and the like according to actual conditions; when the resistance increases after the filter layer 18 retains too much suspended matter, the filtration capacity decreases and the filter layer is backwashed. The bottom of the filter layer 18 is provided with a perforated air pipe 26, and during backwashing, the water pump obtains clear water from the disinfection tank 6 (clear water tank) to perform air-water mixed backwashing.
6) The effluent of the filter tank 5 enters a disinfection tank 6 (clean water tank) to be added with disinfectant and then is discharged or recycled after reaching the standard.
In this embodiment, each reaction tank may be made of carbon steel, stainless steel, polymer material, glass fiber reinforced plastic, etc.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Any modification, equivalent replacement or improvement made within the principle and scope of the present invention shall fall within the protection scope of the claims.
Claims (4)
1. A method for treating domestic sewage by using vertical flow is characterized in that: pumping sewage into the anoxic reaction tank through a water pump, and driving a pulsator flow guiding device arranged in the anoxic reaction tank by utilizing water flow pressure generated during sewage pumping to rotate the pulsator flow guiding device, so as to drive anoxic reaction particle fillers in the anoxic reaction tank to rotate, thereby forming an ascending flow and fully mixing the sewage with the anoxic reaction fillers; after the sewage is reacted, the sewage enters an aerobic reaction tank A from the top in a rotational flow mode to form a rotational descending flow, then the sewage enters the bottom of an aerobic reaction tank B from the bottom of the aerobic reaction tank A in a rotational flow mode to form a rotational ascending flow in the aerobic reaction tank B, and the sewage is fully mixed with an aerobic reaction filler under the action of a flow field and drives the aerobic reaction filler to rotate; the bubbles generated by the aerobic reaction tank are cut by the rotating aerobic reaction filler in the rising process, the diameter is reduced, the dissolved oxygen efficiency is improved, part of bubbles are attached to the aerobic reaction filler, the density of the aerobic reaction filler is reduced, the density of the aerobic reaction filler is lower than that of water, the bubbles are lost in the rotating mixing process, the density of the bubbles is heavier than that of the water, and the bubbles naturally drop under the action of gravity, so that an aerobic suspension bed which is circularly and reciprocally mixed with sewage well is formed; and sequentially carrying out a sedimentation tank, a filter tank and a disinfection tank on the sewage after the aerobic reaction to finish subsequent treatment.
2. An apparatus for realizing the method for treating domestic sewage according to claim 1, comprising an anoxic reaction tank (1), an aerobic reaction tank A (2) and an aerobic reaction tank B (3), wherein: an anoxic reaction particle filler (24) is arranged in the anoxic reaction tank (1), and a pulsator flow guiding device (8) is arranged at the bottom in the anoxic reaction tank (1); the water inlet pipe (7) enters the anoxic reaction tank (1) from the upper part of the anoxic reaction tank (1), the water outlet of the water inlet pipe (7) is positioned at the bottom in the anoxic reaction tank (1), and the water outlet direction is horizontally arranged corresponding to the flow guide wing plate of the impeller flow guide device (8); an effluent weir A (9) is arranged at the upper part of the anoxic reaction tank (1), the water outlet hole of the effluent weir A (9) is communicated with a flow guide pipe A (20) and a flow guide pipe B (21) which are arranged at the upper part of the aerobic reaction tank A, the flow guide pipe A (20) and the flow guide pipe B (21) are arranged clockwise or anticlockwise along the inner wall of the aerobic reaction tank A (2), the water outlet direction of the flow guide pipe A (20) and the flow guide pipe B (21) are mutually perpendicular, an aerobic reaction particle filler (25) is arranged in the aerobic reaction tank A (2), a bottom water outlet hole (11) is arranged at the lower part of the aerobic reaction tank A (2), the bottom water outlet hole (11) is connected with a flow guide pipe C (22) and a flow guide pipe D (23), the flow guide pipe C (22) and the flow guide pipe D (23) are arranged at the bottom of the aerobic reaction tank B (3), the flow guide pipe C (22) and the flow guide pipe D (23) are arranged clockwise or anticlockwise along the inner wall of the aerobic reaction tank B (3), and the water outlet direction of the flow guide pipe C (22) and the flow guide pipe D (23) are mutually perpendicular; an effluent weir B (12) is arranged at the upper part of the aerobic reaction tank B (3), and aeration devices (10) are arranged at the bottoms of the aerobic reaction tank A (2) and the aerobic reaction tank B (3); the upper part of the aerobic reaction tank B (3) is communicated with the upper part of the sedimentation tank (4) through a water outlet weir B (12), the upper part of the sedimentation tank (4) is communicated with the upper part of the filter tank (5) through a peripheral water outlet weir (16), and the lower part of the filter tank (5) is communicated with the lower part of the disinfection tank (6) through a pipeline.
3. The apparatus according to claim 2, wherein: a perforated air pipe (26) is arranged at the bottom of a filter plate (19) of the filter tank (5).
4. The apparatus according to claim 2, wherein: the top of the anoxic reaction tank (1), the aerobic reaction tank A (2), the aerobic reaction tank B (3), the sedimentation tank (4), the filter tank (5) and the disinfection tank (6) are provided with a top cover (27), and the top cover is provided with an overhaul port (28) corresponding to each tank body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710594162.6A CN107176768B (en) | 2017-07-20 | 2017-07-20 | Method and device for treating domestic sewage by using vertical flow |
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| CN201710594162.6A CN107176768B (en) | 2017-07-20 | 2017-07-20 | Method and device for treating domestic sewage by using vertical flow |
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| CN107176768B true CN107176768B (en) | 2023-07-04 |
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| CN108623107A (en) * | 2018-07-20 | 2018-10-09 | 上海泓济环保科技股份有限公司 | Integrated sewage treating apparatus and its processing method |
| CN109987701B (en) * | 2019-03-05 | 2023-10-27 | 大连宇都环境技术材料有限公司 | Water treatment biochemical tank and water treatment process |
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