CN110759471A - Three-dimensional circuitous biological purification pool - Google Patents
Three-dimensional circuitous biological purification pool Download PDFInfo
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- CN110759471A CN110759471A CN201910982888.6A CN201910982888A CN110759471A CN 110759471 A CN110759471 A CN 110759471A CN 201910982888 A CN201910982888 A CN 201910982888A CN 110759471 A CN110759471 A CN 110759471A
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- 238000000746 purification Methods 0.000 title claims abstract description 109
- 239000010865 sewage Substances 0.000 claims abstract description 100
- 239000000945 filler Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000005273 aeration Methods 0.000 claims description 22
- 239000002893 slag Substances 0.000 claims description 21
- 238000007790 scraping Methods 0.000 claims description 20
- 239000003814 drug Substances 0.000 claims description 15
- 239000002351 wastewater Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 239000012535 impurity Substances 0.000 description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
Abstract
The invention relates to a three-dimensional circuitous biological purification tank, which comprises: a tank body which is provided with a sewage inlet and a sewage outlet; the laminated plates are arranged in the tank body at intervals along the longitudinal direction, a tank cavity of the tank body is divided into at least three purification compartments, water passing holes are formed between the laminated plates and the tank wall of the tank body at intervals, the water passing holes and the purification compartments are alternately arranged one by one along the sewage flow direction and are sequentially communicated to form an S-shaped purification channel, and the sewage inlet and the sewage outlet are respectively communicated with the upstream end and the downstream end of the S-shaped purification channel; and a plurality of biological fillers distributed in each purification compartment. Sewage flows through each purification compartment in proper order, can all take place a biological purification reaction with the biofilm carrier in every purification compartment, and sewage and biofilm carrier contact time are long, guarantee that sewage purification handles thoroughly, have strengthened purification tank to the purification treatment and the efficiency of sewage greatly.
Description
Technical Field
The invention relates to the technical field of sewage purification treatment, in particular to a three-dimensional roundabout biological purification tank.
Background
With the continuous progress of sewage treatment technology and the continuous enhancement of environmental protection consciousness of people, national and local governments correspondingly put forward higher requirements on sewage discharge standards and strictly control the discharge amount of nitrogen and phosphorus in town sewage. However, the existing sewage treatment tank and the treatment process thereof are difficult to meet the standard-upgrading requirement due to the problems of early construction, backward treatment process, unreasonable tank capacity distribution and the like of most of domestic sewage treatment plants at present.
In view of this, a new sewage treatment process, MBBR process (Moving bedbidifi 1m Reactor, Moving bed biofilm Reactor), has gradually appeared in recent years. Simply speaking, a certain amount of suspended biological fillers with certain density are added into a traditional sewage treatment tank, and after a biological film is formed on the biological fillers, the biological film and activated sludge can form a combined process, so that the biomass in the tank is greatly improved, the secondary biological treatment of sewage is enhanced, and the purpose of efficient and deep nitrogen and phosphorus removal is achieved. However, since the shape and capacity of the sewage treatment tank are fixed after construction and in order to increase the sewage treatment capacity, the sewage is discharged from the tank after entering the tank and flows for a short distance according to a straight line or arc line path, the contact and reaction time between the sewage and the biological filler is too short, the biological filler directly causes that the biological filler does not perform sufficient biological purification treatment on the sewage, the sewage is discharged, and the sewage purification effect and efficiency are poor.
Disclosure of Invention
Based on the above, there is a need to provide a three-dimensional circuitous biological purification tank, which aims to solve the problems of short contact reaction time between sewage and biological filler and poor biological purification effect of sewage in the prior art
The technical scheme is as follows:
a three-dimensional circuitous biological purification tank, comprising:
a tank body which is provided with a sewage inlet and a sewage outlet;
the laminated plates are arranged in the tank body at intervals along the longitudinal direction, a tank cavity of the tank body is divided into at least three purification compartments, water passing holes are formed between the laminated plates and the tank wall of the tank body at intervals, the water passing holes and the purification compartments are alternately arranged one by one along the sewage flow direction and are sequentially communicated to form an S-shaped purification channel, and the sewage inlet and the sewage outlet are respectively communicated with the upstream end and the downstream end of the S-shaped purification channel; and
a plurality of biological fillers distributed in each purification compartment.
In the three-dimensional circuitous biological purification tank of the proposal, sewage to be purified flows into the tank body from the sewage inlet and finally flows out from the sewage outlet, compared with the traditional sewage treatment tank, the purification tank is different in that the tank cavity of the tank body is partitioned into at least three purification compartments by at least two laminates arranged at intervals in the longitudinal direction, and the purification compartments arranged longitudinally are communicated with each other through water passing holes between the laminates and the tank wall, so that in the sewage flow direction, a scheme that the water passing holes and the purification compartments are alternately communicated one by one is formed and an S-shaped purification channel is formed, as can be seen in the figure, the S-shaped purification channel is of a circuitous structure, the S-shaped purification channel of the circuitous structure can greatly prolong the contact time of unit amount of sewage with biological filler in a unit treatment period, and a plurality of biological fillers are added into each purification compartment, when sewage flows through each purification compartment in proper order, can all take place a biological purification reaction with the biofilm carrier in every purification compartment, realize that sewage takes place biological purification reaction many times when the cell body flows through promptly, sewage purification handles thoroughly, has strengthened purification tank to the purification treatment and the efficiency of sewage greatly.
The technical solution of the present application is further described below:
in one embodiment, each of the laminates is arranged along the sewage flow direction and is inclined towards the bottom of the tank body.
In one embodiment, the three-dimensional roundabout biological purification tank further comprises a first separation net, and the first separation net is arranged in the water passing hole.
In one embodiment, the three-dimensional circuitous biological purification tank further comprises a second separation net which is obliquely arranged on the tank wall of the tank body and is positioned at the downstream of the first separation net, and the first separation net is enclosed by the second separation net.
In one embodiment, the three-dimensional circuitous biological purification tank further comprises an air source, an air supply pipe communicated with the air source, and an aeration pipe arranged on the laminate, wherein the aeration pipe is provided with at least two aeration holes arranged at intervals.
In one embodiment, the number of the aeration pipes is at least two, and the aeration pipes are uniformly distributed on the laminated plate.
In one embodiment, the three-dimensional roundabout biological purification tank further comprises a flow pusher, and the flow pusher is arranged in each purification compartment and is located at an upstream position in the sewage flowing direction.
In one embodiment, the three-dimensional roundabout biological purification tank further comprises a dosing device, and the dosing device is arranged at the tank opening of the tank body; the medicine feeding device comprises a medicine feeding box, a medicine feeding pipe communicated with the medicine feeding box and at least two medicine feeding spray heads arranged on the medicine feeding pipe at intervals.
In one embodiment, the three-dimensional circuitous biological purification tank further comprises a slag scraping device arranged in each purification compartment, wherein the slag scraping device comprises a linear driving piece, a rotary driving piece connected with the linear driving piece, a slag scraping plate in driving connection with the rotary driving piece, and at least two flexible slag scraping hooks arranged on the slag scraping plate at intervals.
In one embodiment, a one-way valve is arranged in the sewage outlet.
Drawings
Fig. 1 is a schematic structural view of a three-dimensional circuitous biological purification tank according to an embodiment of the present invention.
Description of reference numerals:
10. a tank body; 11. a sewage inlet; 12. a sewage outlet; 13. purifying the separated bin; 20. laminating the board; 30. water passing holes; 40. biological fillers; 50. a first screen; 60. a second screen; 70. an aeration pipe; 80. a flow impeller; 90. a medicine adding device; 91. a dosing box; 92. a medicine feeding pipe; 93. a dosing nozzle; 100. a one-way valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to," "disposed on" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the specific manner of fixedly connecting one element to another element can be implemented by the prior art, and will not be described herein, and preferably, a screw-threaded connection is used.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
As shown in fig. 1, the three-dimensional roundabout biological purification tank shown in an embodiment of the present application is operated by using an MBBR process, and can fully combine two process technologies, namely a biofilm and activated sludge, to achieve deep and efficient purification of sewage, and effectively remove nitrogen and phosphorus impurities in the sewage, so that the discharged sewage reaches the discharge standard after national standards are raised.
In this scheme, three-dimensional circuitous type biological purification pond includes: a pool body 10, a laminate 20 and a plurality of biological fillers 40. It can be understood that the tank body 10 is identical to a conventional sewage treatment tank, and serves as a structure for accommodating sewage to facilitate a concentrated purification treatment of the sewage. A sewage inlet 11 and a sewage outlet 12 are formed on the wall of the tank body 10 to realize the inflow and outflow of sewage into and out of the tank body 10. The shape of the pool body 10 can be selected according to actual needs, such as round, square, etc.; the construction material of the tank body 10 can also be selected according to the actual requirement, such as brick-concrete material, stainless steel plate, etc. A plurality of said biological fillers 40 are distributed in each of said purification compartments 13 and suspended in the sewage.
However, the difference between the pool body 10 of the present scheme and the conventional sewage treatment pool is that the pool wall of the pool body 10 is additionally provided with at least two laminates 20, at least two laminates 20 are longitudinally arranged in the pool body 10 at intervals, and the pool cavity of the pool body 10 is divided into at least three purification compartments 13. Therefore, a traditional complete pool cavity can be formed into a three-dimensional layered structure, namely, the height space of the pool cavity is fully utilized. And water through holes 30 are formed between the laminate 20 and the wall of the tank body 10 at intervals, the water through holes 30 and the purification compartments 13 are alternately arranged one by one along the sewage flow direction and are sequentially communicated to form an S-shaped purification channel, and the sewage inlet 11 and the sewage outlet 12 are respectively communicated with the upstream end and the downstream end of the S-shaped purification channel. In this way, the sewage can flow from top to bottom layer by layer according to the S-shaped flow channels, and can be fully contacted with the biological filler 40 in each layer of the purification compartment 13.
In summary, the implementation of the above scheme has the following beneficial effects: when sewage to be purified flows into the tank body 10 from the sewage inlet 11 and finally flows out from the sewage outlet 12, compared with the conventional sewage treatment tank, the purifying tank is different in that the tank cavity of the tank body 10 is partitioned into at least three purifying compartments 13 by at least two laminates 20 arranged at intervals in the longitudinal direction, and the longitudinally arranged purifying compartments 13 are communicated with each other through water passing holes 30 between the laminates 20 and the tank wall, so that a scheme of alternately communicating the water passing holes 30 and the purifying compartments 13 one by one is formed in the sewage flow direction, and an S-shaped purifying channel is formed, as can be seen in the figure, the S-shaped purifying channel has a circuitous structure, and can greatly prolong the contact time between unit amount of sewage and biological fillers 40 in a unit treatment period, and a plurality of biological fillers 40 are added into each purifying compartment 13, when sewage flows through each purification compartment 13 in proper order, can all take place a biological purification reaction with the biofilm carrier 40 in every purification compartment 13, realize that sewage takes place many times biological purification reaction when cell body 10 flows through promptly, sewage purification handles thoroughly, has strengthened purification tank to the purification treatment and the efficiency of sewage greatly.
It should be noted that the biological filler 40 mentioned in the present application is a purification product having biological purification ability. It is made of light materials, such as light plastics; and it is a hollow spatial structure specifically, is put into the purifying tank directly and can suspend in sewage when normal work. The sewage suspension device is suspended in the sewage, and can conveniently flow around along with the sewage, so that the sewage can be more fully contacted. The biological filler 40 can grow into a biological film in the hollow cavity, and the biological film can provide a place for inhabitation and propagation of anaerobic bacteria, so that the anaerobic bacteria can remove nitrogen-containing substances in sewage through denitrification, and the aim of purifying water is fulfilled.
It is understood that the biological filler 40 can be any one of the well-known biological filler 40 products in the prior art, and can be selected according to actual needs, and is not limited in particular.
It should be noted that, taking the length direction as an example, the length of the laminate 20 is slightly shorter than the length of the tank 10 so as to form the water through holes 30, so that the sewage can flow in the purification compartments 13 of different layers. The laminate 20 may be made of any dense material, such as wood, stainless steel, plastic, etc., and three sides of the laminate 20 are connected to the walls of the tank body 10 and ensure sealing. The connection of the layer plate 20 to the pool wall can be, but is not limited to, welding, or bonding.
In addition, in an embodiment, each of the laminates 20 is disposed along the sewage flow direction and inclined toward the bottom of the tank body 10. The laminate 20 is arranged downwards in the inclined direction of sewage, so that the sewage can smoothly flow only by virtue of the gravity of the laminate, the structure is simple, the sewage flows smoothly and efficiently in a three-dimensional space, and the sewage purification treatment efficiency is guaranteed.
It should be noted that the specific inclination angle of the layer plate 20 can be set according to actual needs, for example, the inclination angle is several degrees to ten degrees, and is not limited in detail herein.
Referring to fig. 1, in an embodiment, the three-dimensional bypassing biological purification tank further includes an air source, an air supply pipe connected to the air source, and an aeration pipe 70 disposed on the laminate 20, wherein the aeration pipe 70 is provided with at least two aeration holes disposed at intervals. So, the oxygen of air supply output carries aeration pipe 70 through the air supply pipe, can follow the aeration hole blowout finally and get into in the sewage, for sufficient oxygen of sewage supply for the biomembrane on the biofilm carrier 40 acquires sufficient oxygen, has created favourable environment for going on when digestion reaction and denitrification reaction, has strengthened the nitrogen and phosphorus removal effect of biofilm carrier 40 to sewage.
It should be noted that the basic principle of the biofilm process is applied to the MBBR process, and the technical key point is that the adopted biological filler 40 has an effective large surface area, is suitable for microbial adsorption growth, has a specific gravity close to that of water, and can freely move along with the water under slight stirring. Under aerobic conditions, the water flow and the biological filler 40 generate a large amount of air bubbles under the action of aeration and oxygenation, the rising buoyancy of the air bubbles pushes the biological filler 40 and the surrounding water body to flow, and when the air flow passes through the gap between the water flow and the biological filler 40, the air flow is blocked by the biological filler 40 and is divided into tiny bubbles. In such a process, the biofilm carrier 40 is sufficiently agitated and mixed with the water stream, and the air stream is sufficiently broken down into fine bubbles, increasing the biofilm contact with oxygen and oxygen transfer efficiency.
Further preferably, the number of the aeration pipes 70 is at least two, and the aeration pipes are uniformly distributed on the laminate 20. Thus, the at least two aeration pipes 70 aerate and oxygenate the sewage at the same time, and the biological purification efficiency can be enhanced more effectively.
In order to prevent the biological filler 40 in the current-layer purification compartment 13 from flowing into the adjacent purification compartment 13 from the water passing hole 30 and affecting the biological purification capability of the current-layer purification compartment 13, the three-dimensional circuitous biological purification tank further comprises a first separation net 50, and the first separation net 50 is arranged in the water passing hole 30. In this way, the first screen 50 provides a barrier to the bio-filler 40, thereby avoiding the above-mentioned problems.
In addition, as shown in fig. 1, the aeration pipe 70 needs to be arranged as close to the middle of the laminate 20 as possible due to the arrangement of the overflowing holes, so that the overflowing hole area is easy to cause that the biological fillers 40 are easy to be accumulated on the first separation net 50 and can not effectively participate in the work due to the lack of air flow disturbance. Based on this, in a further embodiment, the three-dimensional circuitous type biological purification tank further comprises a second separation net 60, the second separation net 60 is disposed on the tank wall of the tank body 10 and located downstream of the first separation net 50, and the second separation net 60 encloses the first separation net 50. The second screen 60 is close to the aeration pipe 70 and is installed in an inclined manner, so that the biological filler 40 can be blocked by the second screen 60 and cannot fall into the area above the air passing holes lacking air flow disturbance, and the biological filler continuously and circularly flows in the middle area with sufficient air bubbles all the time, thereby fully participating in the biological purification work and being beneficial to enhancing the sewage treatment capacity of the purification tank.
Further, the three-dimensional roundabout biological purification tank further comprises a flow impeller 80, wherein the flow impeller 80 is arranged in each purification compartment 13 and is located at an upstream position in the sewage flowing direction. The flow pusher 80 is used for driving water flow in the purification compartment 13 to flow more effectively, so that the biological filler 40 is more fully and uniformly contacted with sewage, and the nitrogen and phosphorus removal effect is further enhanced. Specifically, the flow pusher 80 is a gas jet device or a water jet device.
With reference to fig. 1, the three-dimensional bypassing biological purification tank further includes a chemical feeding device 90, and the chemical feeding device 90 is disposed at the tank opening of the tank body 10; the feeding and dosing device 90 comprises a dosing box 91, a dosing pipe 92 communicated with the dosing box 91, and at least two dosing nozzles 93 arranged on the dosing pipe 92 at intervals. Therefore, purifying medicines can be conveniently added into the tank, and the purifying treatment capacity and treatment effect of the purifying tank on sewage can be further enhanced.
Considering that in actual work, impurities of various types and sizes, such as weeds, plastic bags, leaves and the like, are mixed in the sewage, and if more impurities are accumulated on the second partition net 60, the impurities will inevitably cause blockage, so that the sewage cannot flow into the adjacent purification partition cabins 13 from the retaining wall purification partition cabins 13, and the purification tank cannot normally work, and at the moment, slag removal operation needs to be carried out on the second partition net 60. In one embodiment, the stereoscopic roundabout biological purification tank further comprises a slag scraping device disposed in each purification compartment 13, and the slag scraping device comprises a linear driving member, a rotary driving member connected to the linear driving member, a slag scraping plate drivingly connected to the rotary driving member, and at least two flexible slag scraping hooks disposed on the slag scraping plate at intervals. It will be appreciated that the linear drive may be, but is not limited to, a pneumatic cylinder; the rotary drive may be, but is not limited to, an electric motor. When slag removal operation is carried out, firstly, the cylinder drives the piston rod to retract, the slag scraping plate is driven to move from the lowest end to the highest end of the second separation net 60, and the flexible slag scraping hook can scrape and collect impurities accumulated on the surface of the second separation net 60; then the motor acts to drive the slag scraping plate to rotate, so that the impurities can be finally completely carried away from the second separation net 60, and the problem of unsmooth water flow caused by impurity blockage is solved.
It should be noted that the flexible slag scraping hook is made of a plastic material, has good toughness and deformation capability, and can avoid the second separation net 60 from being scraped due to the rigid action with the second separation net 60 while scraping away impurities.
Referring to fig. 1, in addition, a check valve 100 is disposed in the waste water outlet 12. It will be readily appreciated that the one-way valve 100 only allows relatively clean waste water in the bottommost decontamination compartment 13 to be discharged out of the tank 10, while preventing loss of the discharged bio-filler 40.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A three-dimensional circuitous biological purification tank is characterized by comprising:
a tank body which is provided with a sewage inlet and a sewage outlet;
the laminated plates are arranged in the tank body at intervals along the longitudinal direction, a tank cavity of the tank body is divided into at least three purification compartments, water passing holes are formed between the laminated plates and the tank wall of the tank body at intervals, the water passing holes and the purification compartments are alternately arranged one by one along the sewage flow direction and are sequentially communicated to form an S-shaped purification channel, and the sewage inlet and the sewage outlet are respectively communicated with the upstream end and the downstream end of the S-shaped purification channel; and
a plurality of biological fillers distributed in each purification compartment.
2. The stereoscopic circuitous biological purification tank of claim 1, wherein each of the laminae is disposed along the sewage flow direction and inclined toward the bottom of the tank body.
3. The stereoscopic circuitous biological purification tank of claim 1, further comprising a first screen disposed within the water passing holes.
4. The tridimensional circuitous biological purification tank according to claim 3, further comprising a second screen obliquely disposed on the tank wall of the tank body and downstream of the first screen, the second screen enclosing the first screen.
5. The stereoscopic circuitous biological purification tank of claim 1, further comprising an air source, an air supply pipe communicated with the air source, and an aeration pipe disposed on the laminate, wherein the aeration pipe is provided with at least two aeration holes disposed at intervals.
6. The stereoscopic circuitous biological purification tank of claim 5, wherein the number of the aeration pipes is at least two and the aeration pipes are uniformly distributed on the laminate.
7. The tridimensional detour type biological purification tank according to claim 1, further comprising a flow impeller disposed in each of the purification compartments at an upstream position in the flow direction of the wastewater.
8. The stereoscopic circuitous biological purification tank of any one of claims 1 to 7, wherein the stereoscopic circuitous biological purification tank further comprises a dosing device disposed at a tank opening of the tank body; the medicine feeding device comprises a medicine feeding box, a medicine feeding pipe communicated with the medicine feeding box and at least two medicine feeding spray heads arranged on the medicine feeding pipe at intervals.
9. The stereoscopic roundabout biological purification tank as claimed in any one of claims 4 to 7, further comprising a slag scraping device disposed in each purification compartment, wherein the slag scraping device comprises a linear driving member, a rotary driving member connected to the linear driving member, a slag scraping plate drivingly connected to the rotary driving member, and at least two flexible slag scraping hooks disposed on the slag scraping plate at intervals.
10. The stereoscopic circuitous biological purification tank of claim 1, wherein a one-way valve is disposed in the wastewater outlet.
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CN113044956A (en) * | 2020-10-16 | 2021-06-29 | 同济大学 | Stacked biological purification device for high-salinity wastewater and purification method thereof |
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