CN110182951B - Horizontal integrated A/O oxidation ditch tank - Google Patents
Horizontal integrated A/O oxidation ditch tank Download PDFInfo
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- CN110182951B CN110182951B CN201910469649.0A CN201910469649A CN110182951B CN 110182951 B CN110182951 B CN 110182951B CN 201910469649 A CN201910469649 A CN 201910469649A CN 110182951 B CN110182951 B CN 110182951B
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- sealing chamber
- oxidation ditch
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- tank
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- 230000003647 oxidation Effects 0.000 title claims abstract description 47
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000945 filler Substances 0.000 claims abstract description 26
- 238000006213 oxygenation reaction Methods 0.000 claims abstract description 12
- 238000005276 aerator Methods 0.000 claims description 38
- 239000010865 sewage Substances 0.000 claims description 28
- 239000010802 sludge Substances 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims 4
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 15
- 238000005192 partition Methods 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000005273 aeration Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000000926 separation method 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
-
- 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
- C02F3/308—Biological phosphorus removal
-
- 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
-
- 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)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses a horizontal integrated A/O oxidation ditch tank, which comprises a horizontal cylindrical tank body, sealing heads at two ends of the tank body, and a water inlet and a water outlet arranged on the tank body, wherein a baffle assembly is arranged in the inner cavity of the tank body along the length direction of the tank body to divide the tank body into three chambers along the length direction, the head ends of two chambers are communicated, the head end of the other chamber forms a sealing chamber, the sealing chamber forms an anaerobic section flow channel, the head ends of the sealing chamber are provided with a water inlet, the tail ends of the three chambers are communicated with each other, so that the head ends and the tail ends of the two chambers except the sealing chamber are communicated to form a circulation oxidation ditch, at least one plug flow and/or oxygenation device is arranged in the circulation oxidation ditch, and the circulation oxidation ditch is filled with flowing filler.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to the field of label lifting and transformation of rural domestic sewage, urban domestic sewage and industrial sewage, and can also be applied to emergency treatment of river channels and emergency treatment, upgrading and transformation of pump stations.
Background
Firstly, the main treatment difficulty of rural domestic sewage is that the flow is unstable throughout the day, the water is discharged for 20 hours in the morning, in the middle and at night, the proportion of the sewage discharge occupied by the water reaches 50% -80%, the requirement on the shock resistance of equipment is high, in addition, an adjusting tank and a pump station are needed, and the civil engineering cost and the equipment cost are high.
Secondly, rural rain and sewage is not split, a primary sedimentation tank is generally needed, the occupied area is large, denitrification and dephosphorization are needed in the rural sewage treatment process, if an MBR technology is adopted, although good denitrification and dephosphorization can be realized, the membrane flux is relatively low, membrane pollution is easy to occur, cleaning and replacement are difficult to realize after the membrane pollution, the maintenance cost is high, moreover, rural sewage treatment projects are more, villages and towns are scattered, and most sewage treatment devices are buried underground to reduce the occupied area, so that equipment maintenance is difficult.
The technical problems of rural sewage can not be solved effectively.
Disclosure of Invention
The invention aims to provide the anaerobic section which has the advantages of small occupied area, low equipment cost, convenient transportation, capability of effectively solving the problem of short-time flow of rural sewage, realization of surface aeration by adopting an oxidation ditch technology, convenience in later maintenance, strong impact resistance, no need of additionally arranging an adjusting tank pump station and a primary sedimentation tank, simple structure, convenience in industrialization application and formation of an A/O oxidation ditch technology by arranging the partition plates.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the horizontal integrated A/O oxidation ditch tank comprises a horizontal cylindrical tank body, sealing heads at two ends of the tank body, and a water inlet and a water outlet arranged on the tank body, and is characterized in that a baffle assembly is arranged in the inner cavity of the tank body along the length direction of the tank body to divide the tank body into three chambers along the length direction, wherein the head ends of the two chambers are communicated, the head end of the other chamber forms a sealing chamber, the sealing chamber forms an anaerobic section flow channel, the head ends of the sealing chamber are provided with a water inlet, the tail ends of the three chambers are communicated with each other, so that the head ends and the tail ends of the two chambers except the sealing chamber are communicated to form a circulation oxidation channel, at least one plug flow and/or oxygenation device is arranged in the circulation oxidation channel, and flowing filler is filled in the circulation oxidation channel.
Preferably, the baffle assembly is three plate bodies which form different included angles with the horizontal plane around the central axis of the length direction of the tank body in the tank body, the inner sides of the three plate bodies share a long side, the long side at the outermost side of the three plate bodies is connected with the inner wall of the tank body, the head ends of any two adjacent three plate bodies are connected with the sealing head at the head end of the tank body, so that the head section of one chamber forms a sealing chamber, the sealing chamber forms an anaerobic section flow channel, the tail ends of the three plate bodies are arranged at intervals with the tail end of the tank body to form a circular flow port, and the tail ends of the three chambers are communicated with each other to form a circular flow oxidation channel except for the head-tail communication of the two chambers of the sealing chamber.
Preferably, the cross section of the three plate bodies forms a three-fork shape, a T shape or a Y shape.
Preferably, the baffle assembly is two plate bodies arranged along the length of the tank body, one plate body is a horizontal plate body, the other plate body is an inclined plate which is intersected with the surface of the horizontal plate body to form an included angle smaller than 180 degrees, and the outer side end parts of the two plate bodies are connected with the inner wall of the tank body to divide the tank body into three cavities.
Preferably, the cross sections of the two plate bodies are T-shaped.
Preferably, the plug flow and/or oxygenation device is one or a combination of a rotary dish surface aerator, an inverted umbrella surface aerator and a rotary brush surface aerator.
Preferably, the flowing filler is one or a combination of spherical filler, hollow sponge spherical filler and square filler.
Preferably, the flowing filler is divided into an upper layer, a middle layer and a lower layer, the first layer floats on the liquid surface, the density is less than 0.97 (t/m 3), the second layer floats in the middle of sewage and flows while rolling, the density is 0.97-1.1 (t/m 3), and the third layer sinks, the density is greater than 1.1 (t/m 3), and the sludge rolls.
Preferably, the can body is made of hollow winding PP.
Preferably, the rotary disc surface aerator comprises a rotary main shaft arranged on the tank body, a rotary disc sleeved on the rotary main shaft, a speed reducer and a driving motor capable of rotating positively and negatively, wherein two ends of the rotary main shaft extend out of the side wall of the tank body, a bearing seat is arranged on the outer side of the corresponding side wall of the tank body, the driving end of the rotary main shaft penetrates out of the bearing seat to be connected with the speed reducer, and the speed reducer is connected with the driving motor.
Still preferably, the rotating disc is provided with a plurality of pieces, and the diameter of each piece gradually reduces from the highest point to the lowest point of the circular arc of the section of the tank body.
The beneficial effects of the invention are as follows: the tank body of the invention adopts hollow winding PP, effectively ensures the service life and strength, the hollow structure also plays a certain role in heat preservation, the first key core is that the circulation of the oxidation ditch is realized in the tank body, the problem of large flow and large impact strength of rural sewage in a short time is effectively solved, an adjusting tank and a pump station are not needed to be added, the problem that the rain and sewage of the rural sewage are not shunted can be solved at one time through the oxidation ditch tank body of the invention, an initial sedimentation tank is not needed to be added, the civil construction and equipment cost is greatly reduced, an anaerobic section is added on the basis of the circulation channel of the oxidation ditch, and the arrangement mode of the baffle is adjusted without additionally increasing the occupied area, so that the tank body is simple in structure and convenient to implement.
The second key core is that the fluidized bed of MBBR is achieved by filling the flowing filler, and the invention can realize coexistence of an activated sludge process, a contact oxidation process and activated sludge and contact oxidation (filler surface film) by using the flowing filler, wherein the activated sludge process can be continuously operated or intermittently operated by SBR in the operation process, and sludge is discharged by a sludge suction pump.
The third key point is that firstly, an oxidation ditch is arranged in a tank body to form circulation, the mobility of the internal filler along the length direction of the oxidation ditch is increased, the circulation is formed in the up-down direction of the ditch body by controlling the density of the flowing filler, and then the continuous impact of a rotary disc surface aerator is combined, so that the strains on the filler are acclimatized into super strong strains with impact resistance, difficult stripping and strong film adhesion in a short time by combining the three materials, and the impact resistance is 1-4 times that of the common suspension filler. Especially in rural sewage, the short-time flow is extremely large due to the instability of water inflow, so that the activated sludge is easy to run off, and the shock-resistant flowing filler needs to be domesticated.
The fourth key point is that the water flow speed in the oxidation ditch channel close to the surface aerator is high, the floccule of the activated sludge is easy to break, but the water flow speed in the water area far away from the surface aerator is low, the floccule of the activated sludge is easy to agglomerate, is difficult to break, has good digestion reaction, forms good physical biochemical reaction, and improves the denitrification and dephosphorization effects.
Drawings
Fig. 1 is a front view of embodiment 1.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a front view of embodiment 2.
Fig. 5 is a left side view of fig. 4.
Fig. 6 is a top view of fig. 4.
Fig. 7 is a front view of embodiment 3.
Fig. 8 is a left side view of fig. 7.
Fig. 9 is a top view of fig. 7.
Fig. 10 is a front view of embodiment 4.
Fig. 11 is a left side view of fig. 10.
Fig. 12 is a top view of fig. 10.
Fig. 13 is a front view of embodiment 5.
Fig. 14 is a left side view of fig. 13.
Fig. 15 is a top view of fig. 13.
Fig. 16 is a front view of embodiment 6.
Fig. 17 is a left side view of fig. 16.
Fig. 18 is a top view of fig. 16.
FIG. 19 is a schematic view showing the installation of the rotary disk surface aerator.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Example 1: as shown in figures 1, 2 and 3, the horizontal integrated A/O oxidation ditch tank comprises a horizontal cylindrical tank body 1, sealing seal heads 2 at two ends of the tank body 1, water inlet pipes and water outlet pipes (3 and 4) arranged on the tank body 1, wherein the water outlet pipes 4 are connected with adjustable weir plates 5, the tank body 1 is made of hollow winding PP materials, three partition plates 6 are arranged in the inner cavity of the tank body 1 along the length direction of the tank body, the three partition plates 6 form an inverted Y shape, the tank body 1 is divided into a left cavity, a right cavity, a lower cavity (1.1, 1.2 and 1.3), the outer ends of the vertically arranged partition plates 6 are connected with the inner wall of the upper end of the tank body 1, the outer ends of the two symmetrically inclined partition plates 6a are in sealing connection with the inner wall of the corresponding tank body 1, the head ends of the two symmetrically inclined partition plates 6a are in sealing connection with the inner wall of the seal heads 2 of the head end of the tank body 1, the head end of the lower cavity 1.3 is sealed to form an anaerobic section,
the inlet tube 3 sets up in cavity 1.3 head end down, intercommunication anaerobism section, control cavity (1.1, 1.2) head end UNICOM, inlet tube 3 sets up in cavity 1.3 head end down, three division board 6 tail ends and jar head 2 interval setting of body 1 tail end, make the tail end intercommunication of three cavity (1.1, 1.2, 1.3) down about, thereby it constitutes oxidation ditch circulation passageway to make control cavity (1.1, 1.2), all be provided with rotary dish surface aerator 8 in cavity (1.1, 1.2) about the circulation oxidation ditch, the intussuseption of circulation oxidation ditch is filled with flowing filler 9. The flowing filler 9 is divided into an upper layer, a middle layer and a lower layer, wherein the first layer floats on the liquid surface, the density is less than 0.97 (t/m < 3 >) to effectively form anaerobic reaction, the second layer is suspended in the middle of sewage and flows while rolling, the density is 0.97-1.1 (t/m < 3 >), the third layer is sunk, and the density is greater than 1.1 (t/m < 3 >) along with the rolling of sludge. The height of the filler in the sewage is controlled by the density, so that the filler can increase the proportion of the return materials and the carbon components for facilitating film formation, and burr-shaped points are arranged on the surface of the filler, so that film formation is easier. Thereby better utilizing the MBBR technology and effectively removing total nitrogen.
The rotary disc surface aerator 8 comprises a rotary main shaft 8.1 arranged on the tank body 1, a rotary disc 8.2 sleeved on the rotary main shaft 8.1, a speed reducer 8.3 and a variable frequency driving motor 8.4 capable of rotating positively and negatively, wherein two ends of the rotary main shaft 8.1 extend out of the side wall of the tank body 1, a bearing seat 8.5 is arranged on the outer side of the corresponding side wall of the tank body 1, the driving end of the rotary main shaft 8.1 penetrates out of the bearing seat 8.5 to be connected with the speed reducer 8.3, and the speed reducer 8.3 is connected with the driving motor 8.4. The rotating discs 8.2 are provided with a plurality of groups, the rotating discs of the groups are sleeved on the rotating shaft 8.1 at intervals, and the outer diameter of each group of rotating discs 8.2 gradually reduces from inside to outside along with the height of the section of the tank body 1, so that stepped arrangement is formed. Each set of rotor disks may be 1200mm, 1000mm, 800mm, 600mm in diameter. The advantage of installing the rotating disc surface aerator 8 is that it can perform bidirectional rotation, generally the forward oxygenation capacity is 100%, the reverse oxygenation capacity is 70%, pushing is also reduced, when the inflow is less and the strong oxygenation capacity or sludge deposition is not needed, the rotating disc surface aerator can perform reverse rotation, energy consumption is saved, the sludge layer is changed, the sludge is not settled, and the inverted umbrella-shaped surface aerator and the rotating brush surface aerator cannot perform reverse rotation due to the limitation of the structure of the rotating disc surface aerator, and the reverse rotation can cause the failure of pushing and aeration and cause the burning of equipment.
Example 2: referring to embodiment 1, as shown in fig. 4, 5 and 6, the remaining features are unchanged, the rotary disc surface aerator 8 in the tank body 1 is removed, instead, two inverted umbrella surface aerators 10 are respectively arranged at the two end flow openings 7 in the tank body, the inverted umbrella surface aerators 10 are in the prior art, the inverted umbrella surface aerators comprise a main shaft, a motor, a speed reducer and an inverted umbrella on the main shaft, the main shaft extends into the tank body from the top end of the tank body, and the motor and the speed reducer are arranged outside the top end of the tank body, so that the sewage is prevented from being contacted.
Example 3: as shown in fig. 7, 8 and 9, reference is made to example 1: the other characteristics are unchanged, the rotating disc surface aerator 8 in the tank body is removed, a rotating brush surface aerator 11 is arranged in the left and right chambers (1.1 and 1.2) of the circulation oxidation channel instead, the rotating brush surface aerator 11 is also in the prior art, the rotating brush surface aerator generally consists of a motor, a speed reducer, a main shaft, aeration rotating brush blades, a support, a coupling, a lubrication sealing system and the like, the main shaft rotates at a certain speed under the drive of a transmission device, brush sheets made of carbon steel, stainless steel materials or nonmetallic materials are uniformly arranged on the main shaft, the brush sheets are contacted with water in the process of horizontally rotating along with the main shaft, oxygen in air is continuously introduced into the water, the water is thrown into the air, the air is fully contacted with the air, and the air is rapidly dissolved into the water, so that the oxygenation process is completed. Meanwhile, the aeration rotating brush can push water to ensure that the flow rate of 0.15-0.3 m/s exists at the bottom of the tank, so that the activated sludge is in a suspension migration state and is well mixed with the inlet water. The rotary brush aerator has the characteristics of high power efficiency, large oxygenation capacity, long service life, low power loss, low noise and stable and reliable operation.
Example 4: as shown in fig. 10, 11 and 12, the horizontal integrated a/O oxidation ditch tank comprises a horizontal cylindrical tank body 1, sealing heads 2 at two ends of the tank body 1, water inlet pipes and water outlet pipes (3 and 4) arranged on the tank body 1, the water outlet pipes 4 are connected with an adjustable weir plate 5, the tank body 1 is made of hollow winding PP material, two partition plates 6 are arranged in the inner cavity of the tank body 1 along the length direction of the tank body, the two partition plates 6 form an inverted T shape, the tank body 1 is divided into a left cavity and a right cavity (1.1, 1.2 and 1.3), the outer end of the vertically arranged partition plate 6a is connected with the inner wall of the upper end of the tank body, two ends of the horizontal partition plate 6b are in sealing connection with the inner wall of the corresponding tank body, the head end of the horizontal partition plate 6b is in sealing connection with the inner wall of the head end of the tank body 1, so that the head end of the lower cavity 1.3 is sealed to form an anaerobic section, the water inlet pipe 3 is arranged at the head end of the lower cavity 1.3, the anaerobic section is communicated, the head ends of the left cavity and the right cavity (1.1.1 and 1.2) are communicated, the head ends of the water inlet pipe 3 is arranged at the head end of the lower cavity 1.3, the tail end of the two end of the lower cavity (1.3) are communicated with the left cavity 1.1, the left cavity and the tail end of the two end of the partition plates 6 are communicated with the left cavity 1.1.1.2, and the left cavity 1.2 are communicated with the left cavity 1.2, and the left cavity 1.2 are filled with the left cavity and the left cavity 1. The flowing filler 9 is divided into an upper layer, a middle layer and a lower layer, wherein the first layer floats on the liquid surface, the density is less than 0.97 (t/m < 3 >) to effectively form anaerobic reaction, the second layer is suspended in the middle of sewage and flows while rolling, the density is 0.97-1.1 (t/m < 3 >), the third layer is sunk, and the density is greater than 1.1 (t/m < 3 >) along with the rolling of sludge. The height of the filler in the sewage is controlled by the density, so that the filler can increase the proportion of the return materials and the carbon components for facilitating film formation, and burr-shaped points are arranged on the surface of the filler, so that film formation is easier. Thereby better utilizing the MBBR technology and effectively removing total nitrogen.
Example 5: referring to embodiment 1, as shown in fig. 13, 14 and 15, the remaining features are unchanged, the rotary disc surface aerator 8 in the tank body is removed, instead, two inverted umbrella surface aerators 10 are respectively arranged at the two end flow openings 7 in the tank body, the inverted umbrella surface aerators 10 are in the prior art, the inverted umbrella surface aerators comprise a main shaft, a motor, a speed reducer and an inverted umbrella on the main shaft, the main shaft extends into the tank body from the top end of the tank body, and the motor and the speed reducer case are arranged outside the top end of the tank body, so that the inverted umbrella surface aerators are prevented from being contacted with sewage.
Example 6: as shown in fig. 16, 17 and 18, reference is made to example 1: the other characteristics are unchanged, the rotating disc surface aerator 8 in the tank body is removed, a rotating brush surface aerator 11 is arranged in the left and right chambers (1.1 and 1.2) of the circulation oxidation channel instead, the rotating brush surface aerator 11 is also in the prior art, the rotating brush surface aerator generally consists of a motor, a speed reducer, a main shaft, aeration rotating brush blades, a support, a coupling, a lubrication sealing system and the like, the main shaft rotates at a certain speed under the drive of a transmission device, brush sheets made of carbon steel, stainless steel materials or nonmetallic materials are uniformly arranged on the main shaft, the brush sheets are contacted with water in the process of horizontally rotating along with the main shaft, oxygen in air is continuously introduced into the water, the water is thrown into the air, the air is fully contacted with the air, and the air is rapidly dissolved into the water, so that the oxygenation process is completed. Meanwhile, the aeration rotating brush can push water to ensure that the flow rate of 0.15-0.3 m/s exists at the bottom of the tank, so that the activated sludge is in a suspension migration state and is well mixed with the inlet water. The rotary brush aerator has the characteristics of high power efficiency, large oxygenation capacity, long service life, low power loss, low noise and stable and reliable operation.
In embodiments 1 to 6, the material is not limited to hollow wound PP, and may be glass fiber reinforced plastic, stainless steel, or common PP, but the strength and impact resistance are relatively weak.
In addition, the section of the separation plate is provided with at least one group of symmetrical plate bodies with wave crests and wave troughs, which can be S-shaped, wavy, Z-shaped and the like. The simple deformation of the partition board is within the protection scope of the invention.
According to the special flow characteristics of rural sewage, the tank body is designed, so that the tank body is provided with the oxidation ditch circulation channel on the basis of small occupied area and low manufacturing cost, meanwhile, the tank body has the problems of adaptability to the short-time flow of the rural sewage and no diversion of rain and sewage, and the flowing filler is added on the basis, so that three processes can be realized in the tank body: 1. an activated sludge process; 2. a contact oxidation process; 3. the active sludge and the contact oxidation coexist; the three processes are mainly caused by different water qualities of inflow water of rural sewage, and even under the conditions of high COD, low BOD and no nutrition of inflow water, ammoniation reaction or nitration reaction can be realized, so that the method has a good total nitrogen removal effect, and particularly in the process of upgrading and reforming, the main difficulty is that the total nitrogen of outflow water cannot reach the standard, and nitrogen and phosphorus removal under the water quality of high COD and low BOD can be well realized by a mode of oxidation ditch.
In addition, under the condition that the occupied area of the tank body is not increased, the anaerobic section is increased by improving the baffle plate component in the tank body, the A/O oxidation ditch process is realized, and the denitrification and dephosphorization effects are greatly improved.
The described embodiments are only some, but not all, embodiments of the 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.
Claims (11)
1. The horizontal integrated A/O oxidation ditch tank comprises a horizontal cylindrical tank body, sealing end covers at two ends of the tank body, and a water inlet and a water outlet arranged on the tank body, and is characterized in that a baffle assembly is arranged in the inner cavity of the tank body along the length direction of the tank body to divide the tank body into three chambers along the length direction, wherein the head ends of two chambers are communicated, the head ends of the other chambers form a sealing chamber, the sealing chamber forms an anaerobic section runner, the head ends of the sealing chamber are provided with a water inlet, the tail ends of the three chambers are communicated with each other, so that the two chambers except the sealing chamber are communicated with each other to form a circulation oxidation ditch, at least one plug flow and/or oxygenation device is arranged in the circulation oxidation ditch, three plate bodies with different included angles are filled in the circulation oxidation ditch, the baffle assembly is three plate bodies which are formed around the central axis of the length direction of the tank body and the horizontal plane in the tank body, the inner sides of the three plate bodies share one long side, the outermost long sides of the three plate bodies are connected with the inner wall of the tank body, the head ends of any adjacent two blocks of the three plate bodies are connected with the sealing head ends of the tank body in a sealing way, one of the chamber is formed into the sealing chamber, the sealing chamber is communicated with the tail ends of the sealing chamber, the sealing chamber forms a sealing chamber, the sealing chamber is formed with the tail ends of the sealing chamber, the sealing chamber is/the sealing chamber is filled with the tail end ends of the sealing chamber, and the sealing chamber is filled with the sealing chamber is communicated with the sealing chamber, and the sealing chamber is formed with the sealing chamber is outside the sealing chamber.
2. The horizontal integrated a/O oxidation ditch according to claim 1, wherein the three plates are tri-fork shaped.
3. The horizontal integrated a/O oxidation ditch according to claim 1, wherein the baffle assembly is two plates arranged along the length of the tank, one is a horizontal plate, the other is an inclined plate intersecting the surface of the horizontal plate to form an included angle smaller than 180 degrees, and the outer ends of the two plates are connected with the inner wall of the tank to divide the tank into three cavities.
4. The horizontal integrated a/O oxidation ditch according to claim 3, wherein the cross section of the two plates is T-shaped.
5. The horizontal integrated a/O oxidation ditch according to claim 1, wherein the flow pushing and/or oxygenation device is one or a combination of a rotary dish surface aerator, an inverted umbrella surface aerator, a rotary brush surface aerator.
6. The horizontal integrated a/O oxidation ditch according to claim 1, wherein the flowing packing is one or a combination of spherical packing, hollow sponge spherical packing, and square packing.
7. The horizontal integrated A/O oxidation ditch according to claim 6, wherein the flowing filler is divided into upper, middle and lower layers, the first layer floats on the liquid surface, and the density is less than 0.97 (t/m) 3 ) The second layer is suspended in the middle of sewage and flows while rolling, and has a density of 0.97-1.1 (t/m 3 ) The third layer is a bottom with a density of more than 1.1 (t/m 3 ) As the sludge rolls.
8. The horizontal integrated a/O oxidation ditch according to claim 1, wherein the tank body is hollow wound PP.
9. The horizontal integrated A/O oxidation ditch tank according to claim 5, wherein the rotary disc surface aerator comprises a rotary main shaft arranged on the tank body, a rotary disc sleeved on the rotary main shaft, a speed reducer and a driving motor capable of rotating positively and negatively, two ends of the rotary main shaft extend out of the side wall of the tank body, a bearing seat is arranged on the outer side of the corresponding side wall of the tank body, the driving end of the rotary main shaft penetrates out of the bearing seat to be connected with the speed reducer, and the speed reducer is connected with the driving motor.
10. The horizontal integrated a/O oxidation ditch according to claim 9, wherein the rotating discs are provided with a plurality of groups, the rotating discs of the plurality of groups are sleeved on the rotating shaft at intervals, and the outer diameter of each group of rotating discs is gradually reduced from inside to outside along with the height of the section of the tank body, so that the rotating discs form a stepped arrangement.
11. The horizontal integrated a/O oxidation ditch according to claim 1, wherein the water outlet is provided with an adjustable weir plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469649.0A CN110182951B (en) | 2019-05-31 | 2019-05-31 | Horizontal integrated A/O oxidation ditch tank |
| NL2025280A NL2025280B1 (en) | 2019-05-31 | 2020-04-06 | Horizontal integrated Anoxicleic (AIO) oxidation ditch tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469649.0A CN110182951B (en) | 2019-05-31 | 2019-05-31 | Horizontal integrated A/O oxidation ditch tank |
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| Publication Number | Publication Date |
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| CN110182951A CN110182951A (en) | 2019-08-30 |
| CN110182951B true CN110182951B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910469649.0A Active CN110182951B (en) | 2019-05-31 | 2019-05-31 | Horizontal integrated A/O oxidation ditch tank |
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| CN (1) | CN110182951B (en) |
| NL (1) | NL2025280B1 (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU55749A1 (en) * | 1968-03-22 | 1968-06-10 | ||
| US4443338A (en) * | 1977-11-04 | 1984-04-17 | Reid John H | Conversion of plug flow and complete mix aeration basins to barrier oxidation ditches |
| CN2415029Y (en) * | 2000-04-13 | 2001-01-17 | 广东省环境工程装备总公司 | Sewage treating device |
| JP2007275895A (en) * | 2007-07-30 | 2007-10-25 | Hitachi Plant Technologies Ltd | Method for removing nitrogen in membrane separation type oxidation ditch and device therefor |
| CN101531439A (en) * | 2009-04-27 | 2009-09-16 | 江苏金山环保工程集团有限公司 | Integrative three-bent tridimensional cyclic oxidation ditch |
| CN201325908Y (en) * | 2008-12-17 | 2009-10-14 | 北京桑德环境工程有限公司 | Improved sewage treatment system for oxidation ditch |
| CN101786727A (en) * | 2010-02-04 | 2010-07-28 | 浙江大学 | Moving-bed biofilm oxidation ditch |
| CN201793459U (en) * | 2010-07-07 | 2011-04-13 | 湖南国祯环保科技有限责任公司 | Oxidation ditch used for sewage treatment |
| CN106830329A (en) * | 2017-03-30 | 2017-06-13 | 居文钟 | Double-decker three-dimensional circular-flow integration oxidation ditch |
| CN210656354U (en) * | 2019-05-31 | 2020-06-02 | 凌志环保股份有限公司 | Horizontal integrated A/O oxidation ditch tank |
-
2019
- 2019-05-31 CN CN201910469649.0A patent/CN110182951B/en active Active
-
2020
- 2020-04-06 NL NL2025280A patent/NL2025280B1/en active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU55749A1 (en) * | 1968-03-22 | 1968-06-10 | ||
| US4443338A (en) * | 1977-11-04 | 1984-04-17 | Reid John H | Conversion of plug flow and complete mix aeration basins to barrier oxidation ditches |
| CN2415029Y (en) * | 2000-04-13 | 2001-01-17 | 广东省环境工程装备总公司 | Sewage treating device |
| JP2007275895A (en) * | 2007-07-30 | 2007-10-25 | Hitachi Plant Technologies Ltd | Method for removing nitrogen in membrane separation type oxidation ditch and device therefor |
| CN201325908Y (en) * | 2008-12-17 | 2009-10-14 | 北京桑德环境工程有限公司 | Improved sewage treatment system for oxidation ditch |
| CN101531439A (en) * | 2009-04-27 | 2009-09-16 | 江苏金山环保工程集团有限公司 | Integrative three-bent tridimensional cyclic oxidation ditch |
| CN101786727A (en) * | 2010-02-04 | 2010-07-28 | 浙江大学 | Moving-bed biofilm oxidation ditch |
| CN201793459U (en) * | 2010-07-07 | 2011-04-13 | 湖南国祯环保科技有限责任公司 | Oxidation ditch used for sewage treatment |
| CN106830329A (en) * | 2017-03-30 | 2017-06-13 | 居文钟 | Double-decker three-dimensional circular-flow integration oxidation ditch |
| CN210656354U (en) * | 2019-05-31 | 2020-06-02 | 凌志环保股份有限公司 | Horizontal integrated A/O oxidation ditch tank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110182951A (en) | 2019-08-30 |
| NL2025280B1 (en) | 2022-02-21 |
| NL2025280A (en) | 2020-12-03 |
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