CN109293159B - Pressure flow sewage uniform distribution treatment device for aerobic granular sludge system and application method thereof - Google Patents
Pressure flow sewage uniform distribution treatment device for aerobic granular sludge system and application method thereof Download PDFInfo
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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
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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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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to a pressure flow sewage uniformly-distributed treatment device for an aerobic granular sludge system and a use method thereof, wherein the pressure flow sewage uniformly-distributed treatment device comprises a reactor tank body, a water inlet device and a water outlet device, the water inlet device comprises a water inlet main pipe, a water inlet inner channel, a water inlet weir, a water inlet outer channel, a vertical water inlet branch pipe and a vertical bell mouth, the water inlet weir is positioned at the top of the water inlet inner channel, the water inlet outer channel is connected with the vertical water inlet branch pipe, and the vertical water inlet branch pipe is connected with the vertical bell mouth; the water outlet device comprises a water outlet main pipe, a water outlet channel, a water outlet weir, an outer baffle plate and an inner baffle plate; the water outlet channel is connected with the water outlet main pipe, the water outlet weir is positioned at the top of the water outlet channel, the outer baffle plate is a vertical baffle plate, the vertical baffle plate is connected with the reactor pool body, and the inner baffle plate is positioned at the bottom of the water outlet channel; the inner baffle plates are arranged in a mode of forming a certain included angle with the water outlet channel. The device has the advantages of reasonable structural design, convenient operation and use, low operation energy consumption and low later maintenance cost, and can realize the ideal effect of contacting organic matters with sludge.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a pressure flow sewage uniform distribution treatment device for an aerobic granular sludge system and a use method thereof.
Background
The Chinese water pollution problem is serious, and the traditional water distribution mode has the problems of high cost, high energy consumption, unsatisfactory contact of organic matters and sludge, and the like. In the common activated sludge engineering, the water distribution mode mostly adopts front-back plug flow, fresh sewage enters a biological pond to be mixed with raw water, the organic load of the fresh sewage is reduced, and the anaerobic phosphorus release and denitrification of the sludge are not facilitated. Therefore, the development of a new technology which has low running cost, low energy consumption and full contact between organic matters in sewage and sludge has important practical significance for overcoming the limitation of the traditional technology.
Disclosure of Invention
The invention aims at: the pressure flow sewage uniformly-distributed treatment device for the aerobic granular sludge system and the application method thereof have the advantages of reasonable structural design, convenient operation and use, low operation energy consumption, low later maintenance cost and high automation and intelligent degree, and can realize the ideal effect of contacting organic matters with sludge.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the pressure flow sewage uniform treatment device comprises a reactor tank body, a water inlet device and a water outlet device, wherein the water inlet device comprises a water inlet main pipe, a water inlet inner channel, a water inlet weir, a water inlet outer channel, a vertical water inlet branch pipe and a vertical horn mouth; the water inlet device is communicated with the bottom of the reactor tank body through a vertical horn mouth; the water outlet device comprises a water outlet main pipe, a water outlet channel, a water outlet weir, an outer baffle plate and an inner baffle plate; the water outlet channel is connected with the water outlet main pipe, the water outlet weir is positioned at the top of the water outlet channel and is connected with the water outlet channel, the outer flow baffle plate is a vertical flow baffle plate, the vertical flow baffle plate is connected with the reactor pool body, and the inner flow baffle plate is positioned at the bottom of the water outlet channel and is connected with the water outlet channel; the inner baffle plates are arranged in a mode of forming a certain included angle with the water outlet channel, the value of the included angle is 30-60 degrees, and the angle of the inner baffle plates is preferably 45 degrees.
As a further optimization of the above solution, the water outlet is communicated with the reactor Chi Tixiang through a water outlet main pipe.
As a further optimization of the scheme, the water inlets and the water outlets are distributed along the center of the tank body of the reactor in a central symmetry manner, the water inlets are distributed at equal intervals, the interval range is 1-3m, the interval is preferably 2m, the water outlets are distributed at equal intervals, the interval range is 1-3m, the interval is preferably 2m, and sewage on the left side and the right side of the tank body of the reactor is fed in and discharged out simultaneously.
As a further optimization of the above scheme, the main water inlet pipe comprises a first-stage diameter reduction, a second-stage diameter reduction, a third-stage diameter reduction and the like, wherein the first-stage diameter reduction is reduced by 50mm, the second-stage diameter reduction is reduced by 25mm, the third-stage diameter reduction is reduced by 15mm, for example, the pipe diameters are DN325, DN275, DN225, DN200, DN175 and DN125 respectively, and the main water outlet pipe is in the pipe diameter range of DN300-DN350, preferably DN325.
As a further optimization of the scheme, the water inlet weir is a right-angle triangular weir, the water inlet weir is positioned at the top of the water inlet inner channel and is connected with the water inlet inner channel, and the theoretical calculation formula for checking the load of a single water inlet weir is 1.27L/(m.s),
as a further optimization of the scheme, the bottom of the water inlet outer channel is connected with the vertical water inlet branch pipe, the water inlet inner channel, the water inlet outer channel, the vertical water inlet branch pipe and the vertical bell mouth are positioned on the same symmetry axis, and the elevation of the water outlet channel is 100-300mm lower than that of the water inlet inner channel, and the water outlet channel has no gradient.
As a further optimization of the scheme, the bottom of the water outlet channel is connected with an inner baffle plate, and the inner baffle plate is 45 degrees with the horizontal direction. The advantage of setting like this lies in interior baffle and outer baffle and outlet canal, forms an opening and upwards half closed district, and the static sedimentation zone of good oxygen granule mud promptly, and good oxygen granule mud of sediment slides along interior baffle to the reactor cell body in, and the sewage passes through the play weir and gets into the outlet canal, discharges through the play water owner pipe, realizes mud and sewage's separation.
As a further optimization of the scheme, the water outlet weir is a right-angle triangular weir, the water outlet weir is positioned at the top of the water outlet canal and is connected with the water outlet canal, the load of a single water outlet weir is checked to be 1.67L/(m.s), the theoretical calculation formula is that,
the application method of the pressure flow sewage uniformly-distributed treatment device for the aerobic granular sludge system comprises the following steps:
1) The pressure range is 0.1MPa-10MPa, preferably 1MPa, so that the water inlet main pipe is filled with sewage, the pipe diameter of the water inlet main pipe is changed step by step, the flow speed or flow rate of each vertical section of the water inlet main pipe is controlled to be consistent, the sewage is uniformly distributed by the water inlet device, and the sewage enters the water inlet inner channel;
2) The sewage collected by the water inlet inner channel falls to the water inlet outer channel through the water inlet weir, so that the primary diversion and distribution of the sewage are realized; sewage in the water inlet outer channel automatically flows to a vertical water inlet pipe and flows into the reaction tank through a vertical horn mouth, so that secondary diversion and distribution of the sewage are realized;
3) Due to the difference in elevation between the water inlet device and the water outlet device, sewage in the reaction tank enters the water outlet channel through the water outlet weir, and the sewage in the water outlet channel flows out of the reaction tank through the water outlet main pipe, so that continuous stability in the operation of the water distribution system is ensured.
The pressure flow sewage uniformly-distributed treatment device for the aerobic granular sludge system and the application method thereof have the following advantages that the pressure flow sewage uniformly-distributed treatment device for the aerobic granular sludge system is convenient to use, and the application method thereof is convenient
The beneficial effects are that:
(1) The invention utilizes the gradual diameter change of the main water inlet pipe to control the flow velocity or flow rate of each vertical section in the main water inlet pipe to be consistent, thereby ensuring the continuous stability of water flow in the water inlet process.
(2) The invention utilizes the selective diversion of sewage by the water inlet device to uniformly distribute the sewage in the reaction tank, the water inlet device is provided with the water inlet weir, the sewage can be redistributed after falling down through the water inlet weir, and meanwhile, the kinetic energy of the sewage in the water inlet inner channel is reduced.
(3) The invention utilizes the blocking effect of the inner and outer baffle plates to create a relatively stable area, and sewage can realize free sedimentation, thereby being beneficial to realizing the separation of sewage and sludge and reducing the concentration of suspended matters in effluent. The inner baffle plate and the outer baffle plate and the water outlet channel form a semi-closed area with an upward opening, namely an aerobic granular sludge static sedimentation area, the sedimented aerobic granular sludge slides into the reactor tank body along the inner baffle plate, sewage enters the water outlet channel through the water outlet weir, and is discharged through the main water outlet pipe, so that the separation of the sludge and the sewage is realized.
(4) The invention utilizes the water inlet and outlet devices to realize the function of water inlet and outlet, and the sludge and sewage organic matters are in gradient full contact, thereby creating a satiation-starvation environment, being beneficial to denitrification and anaerobic phosphorus release and realizing the granulation of the sludge.
(5) The method has the advantages of simple process, large treatment capacity and high efficiency, and plays an important role in realizing granulation in pilot scale and demonstration engineering of the existing granular sludge process.
Drawings
FIG. 1 is a schematic side view of a pressure flow sewage uniformly-distributing treatment device of the invention.
Fig. 2 is a schematic front view of the pressure flow sewage uniformly-distributing treatment device of the invention.
Fig. 3 is a right side view schematic diagram of the pressure flow sewage uniformly-distributing treatment device of the invention.
The meaning of the individual reference numerals in the figures is as follows:
1. a reactor tank body; 2. a water inlet device; 3. a water outlet device; 4. a water inlet main pipe; 5. an inner water inlet channel; 6. a water inlet weir; 7. an outer water inlet channel; 8. a vertical water inlet branch pipe; 9. a vertical flare; 10. a water outlet main pipe; 11. a water outlet channel; 12. a water outlet weir; 13. an outer baffle; 14. an inner baffle plate.
Detailed Description
The pressure flow sewage uniformly-distributed treatment device and the use method thereof are described in detail below with reference to figures 1-3.
The pressure flow sewage uniform treatment device for the aerobic granular sludge system comprises a reactor tank body 1, a water inlet device 2 and a water outlet device 3, wherein the water inlet device comprises a water inlet main pipe 4, a water inlet weir 6, a water inlet outer channel 7, a vertical water inlet branch pipe 8 and a vertical horn mouth 9, the water inlet main pipe 4 is connected with the water inlet inner channel 5, the water inlet weir 6 is positioned at the top of the water inlet inner channel 5 and is connected with the water inlet inner channel 5, the water inlet outer channel 7 is connected with the vertical water inlet branch pipe 8, and the vertical water inlet branch pipe 8 is connected with the vertical horn mouth 9; the water inlet device is communicated with the bottom of the reactor tank body through a vertical horn mouth; the water outlet device 3 comprises a water outlet main pipe 10, a water outlet channel 11, a water outlet weir 12, an outer baffle 13 and an inner baffle 14; the water outlet channel 11 is connected with the water outlet main pipe 10, the water outlet weir 12 is positioned at the top of the water outlet channel 11 and is connected with the water outlet channel 11, the outer baffle plate 13 is a vertical baffle plate, and the vertical baffle plate is connected with the reactor tank body 1; the inner baffle plate 14 is positioned at the bottom of the water outlet channel and is connected with the water outlet channel 11; the inner baffle plates 14 are arranged in a mode of forming a certain included angle with the water outlet channel, the value of the included angle is 30-60 degrees, and the angle of the inner baffle plates is preferably 45 degrees; the water outlet device 3 is communicated with the reactor tank body 1 through a water outlet main pipe 10.
The water inlets 2 and the water outlets 3 are symmetrically distributed along the center of the reactor tank body 1, the water inlets 2 are uniformly distributed at intervals, the intervals are 1-3m, the intervals are preferably 2m, the water outlets 3 are uniformly distributed at intervals, the intervals are 1-3m, the intervals are preferably 2m, and sewage on the left side and the right side of the reactor tank body 1 is fed in and discharged out simultaneously.
The water inlet main pipe 4 comprises a first-stage reducing part, a second-stage reducing part, a third-stage reducing part and the like, wherein the first-stage reducing part is reduced by 50mm, the second-stage reducing part is reduced by 25mm, the third-stage reducing part is reduced by 15mm, the pipe diameters are DN325, DN275, DN225, DN200, DN175 and DN125 respectively, and the pipe diameter range of the water outlet main pipe 10 is DN300-DN350, preferably DN325.
The water inlet weir 6 is a right-angle triangular weir, the water inlet weir 6 is positioned at the top of the water inlet inner channel and connected with the water inlet inner channel 5, the load of the single water inlet weir 6 is checked to be 1.27L/(m.s), the theoretical calculation formula is that,
the bottom of the water inlet outer channel 7 is connected with the vertical water inlet branch pipe 8, the water inlet inner channel 5, the water inlet outer channel 7, the vertical water inlet branch pipe 8 and the vertical bell mouth 9 are positioned on the same symmetry axis, and the elevation of the water outlet channel 11 is 100-300mm lower than that of the water inlet inner channel 5, and has no gradient.
The bottom of the water outlet channel 11 is connected with the inner baffle plate 14, the inner baffle plate 14 forms 45 degrees with the horizontal direction, and the advantage is that the inner baffle plate 14, the outer baffle plate 13 and the water outlet channel 11 form a semi-closed area with an upward opening, namely an aerobic granular sludge static sedimentation area, the settled aerobic granular sludge slides down into the reactor tank body 1 along the inner baffle plate 14, sewage enters the water outlet channel 11 through the water outlet weir 12 and is discharged through the water outlet main pipe 10, and the separation of sludge and sewage is realized.
The water outlet weir 12 is a right-angle triangular weir, the water outlet weir 12 is positioned at the top of the water outlet canal and is connected with the water outlet canal 11, the load of the single water outlet weir 12 is checked to be 1.67L/(m.s), the theoretical calculation formula is that,
the application method of the pressure flow sewage uniformly-distributed treatment device for the aerobic granular sludge system comprises the following steps:
1) The pressure range is 0.1MPa-10MPa, preferably 1MPa, so that the water inlet main pipe is filled with sewage, the pipe diameter of the water inlet main pipe is changed step by step, the flow speed or flow rate of each vertical section of the water inlet main pipe is controlled to be consistent, the sewage is uniformly distributed by the water inlet device, and the sewage enters the water inlet inner channel;
2) The sewage collected by the water inlet inner channel falls into the water inlet outer channel through the water inlet weir, so that the sewage in the water inlet outer channel flows automatically to the vertical water inlet pipe, flows into the reaction tank through the vertical bell mouth, and realizes the secondary flow distribution of the sewage;
3) Due to the difference in elevation between the water inlet device and the water outlet device, sewage in the reaction tank enters the water outlet channel through the water outlet weir, and the sewage in the water outlet channel flows out of the reaction tank through the water outlet main pipe, so that continuous stability in the operation of the water distribution system is ensured.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (7)
1. A pressure flow sewage equipartition processing apparatus for good oxygen granule mud system, its characterized in that: the pressure flow sewage uniformly-distributed treatment device comprises a reactor tank body (1), a water inlet device (2) and a water outlet device (3), wherein the water inlet device comprises a water inlet main pipe (4), a water inlet inner channel (5), a water inlet weir (6), a water inlet outer channel (7), a vertical water inlet branch pipe (8) and a vertical horn mouth (9); the water inlet main pipe is connected with the water inlet inner channel; the water inlet weir is positioned at the top of the water inlet inner channel and is connected with the water inlet inner channel; the water inlet outer channel is connected with a vertical water inlet branch pipe; the vertical water inlet branch pipe is connected with the vertical horn mouth; the water inlet device is communicated with the bottom of the reactor tank body through a vertical horn mouth; the water outlet device comprises a water outlet main pipe (10), a water outlet channel (11), a water outlet weir (12), an outer baffle plate (13) and an inner baffle plate (14); the water outlet channel is connected with a water outlet main pipe; the water outlet weir is positioned at the top of the water outlet channel and is connected with the water outlet channel; the outer baffle plate is a vertical baffle plate, and the vertical baffle plate is connected with the reactor tank body; the inner baffle plate is positioned at the bottom of the water outlet channel and is connected with the water outlet channel; the inner baffle plates are arranged in a mode of forming a certain included angle with the water outlet channel, and the value of the included angle is 30-60 degrees; the water outlet device is communicated with the reactor Chi Tixiang through a water outlet main pipe; the main water inlet pipe comprises a first-stage diameter change, a second-stage diameter change and a third-stage diameter change, wherein the first-stage diameter change is decreased by 50mm, the second-stage diameter change is decreased by 25mm, the third-stage diameter change is decreased by 15mm, and the main water outlet pipe has a pipe diameter range of DN300-DN350.
2. The pressure flow sewage uniformly-distributed treatment device for an aerobic granular sludge system according to claim 1, wherein the pressure flow sewage uniformly-distributed treatment device comprises the following components: the water inlets and the water outlets are symmetrically distributed along the center of the reactor tank body, the water inlets are distributed at equal intervals, the interval range is 1-3m, the water outlets are distributed at equal intervals, the interval range is 1-3m, and sewage on the left side and the right side of the reactor tank body is fed in and discharged out simultaneously.
3. The pressure flow sewage uniformly-distributed treatment device for an aerobic granular sludge system according to claim 1, wherein the pressure flow sewage uniformly-distributed treatment device comprises the following components: the water inlet weir is a right-angle triangular weir, the water inlet weir is positioned at the top of the water inlet inner channel and connected with the water inlet inner channel, the load of a single water inlet weir is checked to be 1.27L/(m.s), the theoretical calculation formula is that,
single triangular weir crest flow
Head loss over weir for single triangular weir
Checking the load of a single water inlet weir
4. The pressure flow sewage uniformly-distributed treatment device for an aerobic granular sludge system according to claim 1, wherein the pressure flow sewage uniformly-distributed treatment device comprises the following components: the bottom of the water inlet outer channel is connected with the vertical water inlet branch pipe, the water inlet inner channel, the water inlet outer channel, the vertical water inlet branch pipe and the vertical bell mouth are positioned on the same symmetrical axis, and the height of the water outlet channel is 100-300mm lower than that of the water inlet inner channel, and the water outlet channel has no gradient.
5. The pressure flow sewage uniformly-distributed treatment device for an aerobic granular sludge system according to claim 1, wherein the pressure flow sewage uniformly-distributed treatment device comprises the following components: the bottom of the water outlet channel is connected with an inner baffle plate, and the inner baffle plate forms 45 degrees with the horizontal direction.
6. The pressure flow sewage uniformly-distributed treatment device for an aerobic granular sludge system according to claim 1, wherein the pressure flow sewage uniformly-distributed treatment device comprises the following components: the water outlet weir is a right-angle triangular weir, the water outlet weir is positioned at the top of the water outlet canal and connected with the water outlet canal, the load of a single water outlet weir is checked to be 1.67L/(m.s), the theoretical calculation formula is that,
single triangular weir crest flow
Head loss over weir for single triangular weir
Checking the load of a single water outlet weir
7. A method of using a pressure flow sewage treatment apparatus for an aerobic granular sludge system according to any one of claims 1 to 6, comprising the steps of:
1) The pressure range is 0.1MPa-10MPa, so that the water inlet main pipe is filled with sewage, the diameters of the water inlet main pipe are changed step by step, the flow speed or the flow of each vertical section of the water inlet main pipe is controlled to be consistent, the sewage is uniformly distributed by the water inlet device, and the sewage enters the water inlet inner channel;
2) The sewage collected by the water inlet inner channel falls to the water inlet outer channel through the water inlet weir, so that the primary diversion and distribution of the sewage are realized;
sewage in the water inlet outer channel automatically flows to a vertical water inlet pipe and flows into the reaction tank through a vertical horn mouth, so that secondary diversion and distribution of the sewage are realized;
3) Due to the difference in elevation between the water inlet device and the water outlet device, sewage in the reaction tank enters the water outlet channel through the water outlet weir, and the sewage in the water outlet channel flows out of the reaction tank through the water outlet main pipe, so that continuous stability in the operation of the water distribution system is ensured.
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