CN113087309A - Multistage water body remediation system - Google Patents
Multistage water body remediation system Download PDFInfo
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- CN113087309A CN113087309A CN202110448283.6A CN202110448283A CN113087309A CN 113087309 A CN113087309 A CN 113087309A CN 202110448283 A CN202110448283 A CN 202110448283A CN 113087309 A CN113087309 A CN 113087309A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000005067 remediation Methods 0.000 title claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 47
- 238000001914 filtration Methods 0.000 claims abstract description 46
- 239000010802 sludge Substances 0.000 claims abstract description 42
- 238000005273 aeration Methods 0.000 claims abstract description 35
- 238000004062 sedimentation Methods 0.000 claims abstract description 35
- 239000010865 sewage Substances 0.000 claims abstract description 31
- 230000003647 oxidation Effects 0.000 claims abstract description 18
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 18
- 230000003068 static effect Effects 0.000 claims abstract description 16
- 239000006228 supernatant Substances 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 238000007667 floating Methods 0.000 claims description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 10
- 239000004917 carbon fiber Substances 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 230000008719 thickening Effects 0.000 claims 2
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000003337 fertilizer Substances 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 229910052698 phosphorus Inorganic materials 0.000 description 7
- 239000011574 phosphorus Substances 0.000 description 7
- 239000004912 1,5-cyclooctadiene Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000005276 aerator Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002101 nanobubble Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- 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
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Biological Treatment Of Waste Water (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention belongs to the technical field of sewage treatment, and particularly discloses a multistage water body remediation system which comprises a contact oxidation tank, a stirring tank, a sedimentation tank, a sludge concentration tank and a sludge dewatering tank, wherein an aeration device is arranged at the bottom of the contact oxidation tank, the aeration device is connected with a nano aeration machine through a pipeline, a drain outlet is formed in the bottom of the sedimentation tank, the drain outlet is sequentially communicated with the sludge concentration tank and the sludge dewatering tank through a drain pipeline, a sludge dewatering machine is arranged in the dewatering tank, a sludge cake conveying belt is arranged on the outflow side of the dewatering tank, a dynamic filtering system is arranged on the outflow side of supernatant in the sedimentation tank, and a static filtering system is arranged on the outflow side of the dynamic filtering system. The system provided by the invention is matched with each other, so that the purposes of dephosphorization, denitrification and COD reduction of sewage can be realized, sludge discharged from the sedimentation tank can be concentrated and dehydrated to prepare mud cakes or fertilizers, and the waste utilization is realized.
Description
Technical Field
The application belongs to the technical field of sewage treatment, in particular to a multistage water body remediation system.
Background
With the wide development of agricultural production activities, the sources of rural domestic sewage are more and more extensive, mainly including rural resident domestic drainage, rural folk-custom travel drainage, rural livestock and poultry breeding drainage, rural aquaculture drainage and rural peripheral hotel drainage, and the like, and the components of pollutants in the discharged sewage are complex and various, and mainly include pollutants such as total nitrogen, total phosphorus, COD, BOD and the like.
In the prior art, the treatment of sewage only stays at the stages of physical precipitation and impurity removal by a flocculating agent, and the sewage cannot be purified really.
Therefore, providing a new sewage purification system of a multi-stage water body remediation system is a technical problem that needs to be solved urgently by technicians in the field.
Disclosure of Invention
The invention aims to overcome the defect of incomplete water body restoration in the prior art and provides a multistage water body restoration system.
The invention provides a multistage water body remediation system, which comprises a contact oxidation tank 2, a stirring tank, a sedimentation tank 6, a sludge concentration tank 9 and a sludge dewatering tank 10, wherein an aeration device 27 is arranged at the bottom of the contact oxidation tank 2, the aeration device 27 is connected with a nano aerator 11 through a pipeline, the stirring tank comprises a first stirring tank 3, a second stirring tank 4 and a third stirring tank 5, the first stirring tank 3, the second stirring tank 4 and the third stirring tank 5 are communicated through pipelines, the third stirring tank 5 is communicated with the sedimentation tank 6 through a pipeline, a sewage discharge port is formed at the bottom of the sedimentation tank 6, the sewage discharge port is sequentially communicated with the sludge tank 9 and the sludge dewatering tank 10 through a sewage discharge pipeline 16, a sludge dewatering machine is arranged in the dewatering tank 10, a sludge cake conveyer belt 17 is arranged at the outflow side of the dewatering tank 10, and a dynamic filtering system 7 is arranged on the supernatant outflow side of the sedimentation tank 6, and a static filtering system 8 is arranged on the outflow side of the dynamic filtering system 7.
A further scheme does, dynamic filtration system 7 includes filter plate 20, unsteady board 24 and aeration equipment 27, it has particle filtration thing 21 to pile up on the filter plate 20, the mounting groove has been seted up to dynamic filtration system 7 inner chamber both sides, be provided with pillar 22 in the mounting groove, the cover is equipped with spring 23 on the pillar 22, the both ends of unsteady board 24 with spring 23 fixed connection, a plurality of vertically erect hole 26 have been seted up to unsteady board 24, the top of erecting hole 26 is provided with water distribution gas distribution device 25, aeration equipment 27 has connected gradually aeration fan 28 and air cleaner 29 through the pipeline.
In a further aspect, the static filter system 8 comprises a porous ceramic filter 14 detachably disposed side by side inside.
The further scheme is that a foamed aluminum frame 30 is arranged at the center inside the porous ceramic filter 14, a carbon fiber film 31 covers the outer layer of the foamed aluminum frame 30, a silicon dioxide film 32 is sputtered on the outer layer of the carbon fiber film 31, and a biological film 33 is further arranged on the inner wall of the porous ceramic filter 14.
Further, a PAC mixer 12 is disposed on the first stirring tank 3, and is used for injecting PAC into the first stirring tank 3.
Further, a PAM mixer 13 is disposed on the first agitation tank 4, and is used for injecting PAM into the second agitation tank 4.
The further scheme is that the bottom of the sedimentation tank 6 is conical, a check valve 18 is arranged at the water inlet, and a filter screen 19 is arranged in the inner cavity of the sedimentation tank.
The further proposal is that a sludge pump is arranged between the sludge concentration tank 9 and the sludge dewatering tank 10, and the sludge pump is a screw pump.
The further scheme is that a water inlet pipeline 1 is arranged on one side of the contact oxidation pond 2, a booster water pump is arranged on the water inlet pipeline 1, and a water outlet pipeline 15 is arranged on the outflow side of the static filtering system 8.
Compared with the prior art, the invention has the beneficial effects that:
(1) COD and total phosphorus can be removed through the contact oxidation tank, and the nano aeration technology is adopted, so that the retention time of nano bubbles in water is prolonged, the dissolved oxygen is effectively increased, the aeration amount can be reduced, and the energy consumption is saved.
(2) The system provided by the invention is matched with each other, so that the purposes of dephosphorization, denitrification and COD reduction of sewage can be realized, sludge discharged from the sedimentation tank can be concentrated and dehydrated to prepare mud cakes or fertilizers, and the waste utilization is realized.
(3) The dynamic filtering system can increase the contact time and the contact area of sewage and particle filtering matters to the maximum extent, improves the filtering efficiency, and realizes dynamic balance and improves the stability of the dynamic filtering system by matching the floating plate with the water and gas distribution device.
(4) The multi-stage stirring tank and the sedimentation tank are arranged, so that large-particle impurities in sewage can be thoroughly removed, and convenience is provided for subsequent chemical impurity removal.
(5) The static filtering system is provided with the carbon fiber film, the silicon dioxide film and the biological film, and can further remove phosphorus, nitrogen and COD in sewage.
Drawings
The invention is illustrated and described only by way of example and not by way of limitation in the scope of the accompanying drawings, in which:
FIG. 1: (ii) a The invention is a schematic diagram of a connection structure;
FIG. 2: the internal structure of the sedimentation tank is shown schematically;
FIG. 3: the internal structure schematic diagram of the dynamic filtering system;
FIG. 4: the internal structure of the porous ceramic filter is shown schematically;
FIG. 5: a schematic view of a cleaning state of the dynamic filtration system;
in the figure: 1 water inlet pipeline, 2 contact oxidation pond, 3 first stirring pond, 4 second stirring pond, 5 third stirring pond, 6 sedimentation tank, 7 dynamic filtration system, 8 static filtration system, 9 sludge concentration pond, 10 sludge dewatering pond, 11 nanometer aeration machine, 12PAC mixer, 13PAM mixer, 14 porous ceramic filter, 15 water outlet pipeline, 16 sludge pipeline, 17 mud cake conveyer belt, 18 check valve, 19 filter screen, 20 filter plate, 21 particle filter, 22 pillar, 23 spring, 24 floating plate, 25 water and gas distribution device, 26 vertical hole, 27 aeration device, 28 aeration fan, 29 air filter, 30 foamed aluminum frame, 31 carbon fiber film, 32 silicon dioxide film, 33 biological film.
Detailed Description
In order to make the objects, technical solutions, design methods, and advantages of the present invention more apparent, the present invention will be further described in detail by specific embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in figure 1, the invention provides a multistage water body remediation system, which comprises a contact oxidation tank 2, a stirring tank, a sedimentation tank 6, a sludge concentration tank 9 and a sludge dewatering tank 10, wherein an aeration device 27 is arranged at the bottom of the contact oxidation tank 2, the aeration device 27 is connected with a nano aerator 11 through a pipeline, the stirring tank comprises a first stirring tank 3, a second stirring tank 4 and a third stirring tank 5, the first stirring tank 3, the second stirring tank 4 and the third stirring tank 5 are communicated through pipelines, the third stirring tank 5 is communicated with the sedimentation tank 6 through a pipeline, a sewage discharge outlet is arranged at the bottom of the sedimentation tank 6 and is sequentially communicated with the sludge concentration tank 9 and the sludge dewatering tank 10 through a sewage discharge pipeline 16, a sludge dewatering machine is arranged in the dewatering tank 10, a sludge cake conveyer belt 17 is arranged at the outflow side of the dewatering tank 10, a dynamic filtering system 7 is arranged on the supernatant fluid outflow side of the sedimentation tank 6, a static filtering system 8 is arranged on the outflow side of the dynamic filtering system 7, as shown in fig. 3, the dynamic filtration system 7 includes a filter plate 20, a floating plate 24 and an aeration device 27, particle filtering materials 21 are accumulated on the filter plate 20, mounting grooves are arranged on two sides of the inner cavity of the dynamic filtering system 7, supporting columns 22 are arranged in the mounting grooves, springs 23 are sleeved on the supporting columns 22, two ends of the floating plate 24 are fixedly connected with the spring 23, the floating plate 24 is provided with a plurality of vertical holes 26, the nozzle of the vertical hole 26 is provided with a water and gas distribution device 25, the aeration device 27 is sequentially connected with an aeration fan 28 and an air filter 29 through pipelines, the static filtration system 8 comprises a porous ceramic filter 14 removably arranged side by side inside.
As shown in fig. 4, a foamed aluminum frame 30 is disposed at the center inside the porous ceramic filter 14, a carbon fiber film 31 covers an outer layer of the foamed aluminum frame 30, a silica film 32 is sputtered on an outer layer of the carbon fiber film 31, and a biological film 33 is further disposed on an inner wall of the porous ceramic filter 14, so that phosphorus, nitrogen and COD in sewage can be further removed.
Optionally, be provided with PAC blender 12 on the first stirring pond 3 for pour into PAC in the first stirring pond 3, be provided with PAM blender 13 on the second stirring pond 4 for pour into PAM in the second stirring pond 4, form the wadding, play preliminary precipitation impurity's effect.
As shown in figure 2, 6 bottoms of sedimentation tank are the toper, and water inlet department is provided with check valve 18, the inner chamber of sedimentation tank is provided with filter screen 19, and when conical design can guarantee that sewage gets into sedimentation tank 6, form the vortex, the sediment of the silt of being convenient for. And with the entering of sewage, the supernatant in the sedimentation tank 6 can overflow the filter screen 19, so that the water impurities flowing into the dynamic filtering system 7 from the sedimentation tank 6 are ensured to be as less as possible.
Optionally, a sludge pump is arranged between the sludge concentration tank 9 and the sludge dewatering tank 10, and the sludge pump is a screw pump, so that the sludge in the sludge concentration tank 9 can smoothly enter the sludge dewatering tank for dewatering.
Optionally, one side of the contact oxidation pond 2 is provided with a water inlet pipe 1, the water inlet pipe 1 is provided with a booster water pump, and the outflow side of the static filtration system 8 is provided with a water outlet pipe 15.
When the device is used, sewage is sent into the contact oxidation tank 2 through the water inlet pipeline 1 by the pressure water pump, the nano aerator 11 is started, the oxygenation efficiency of a water body can be effectively improved, PAC and PAM are respectively added into the first stirring tank 3 and the second stirring tank 4 to form floccules, and phosphorus can be precipitated. Then the sewage in the second stirring tank 4 is sent into a third stirring tank 5, the stirring is continued, the phosphorus is further removed, the stirred sewage is sent into a sedimentation tank 6 by the third stirring tank 5, and the conical design can ensure that a vortex is formed when the sewage enters the sedimentation tank 6, so that the sediment of silt is facilitated. And with the entering of the sewage, the supernatant in the sedimentation tank 6 can overflow the filter screen 19, so that the water impurities flowing into the dynamic filtering system 7 from the sedimentation tank 6 are ensured to be as less as possible. Large particle impurities such as silt that sedimentation tank 6 depositd can get into sludge concentration tank 9, carries out preliminary concentration to mud, and silt after will concentrating is pumped to mud dewatering tank 10 by the screw pump, and after further dewatering by the dehydrator, transports the mud cake to transport means such as cars to appointed fixed point by mud cake conveyer belt 17, realizes waste utilization.
After the supernatant in the sedimentation tank 6 flows into the dynamic filtering system 7, the aeration fan 28 is turned on, air is blown vertically upwards from the aeration device 27, the air passes through the vertical holes 26 and is blown to the filter plate 20 by the water and air distribution device 25, and the air passes through the filter plate 20 because the filter plate is porous, so that the particle filter 21 arranged on the filter plate 20 is in a dynamic state, on one hand, the particle filter 21 can be prevented from blocking the filter plate 20, on the other hand, the contact area of the water and the particle filter 21 is increased, and the filtering effect is enhanced. Moreover, when the air flow of the aeration device 27 is too large, the floating plate 24 floats upward, and when the air flow of the aeration device 27 is small, the floating plate 24 descends, and dynamic balance is realized.
Water in the dynamic filtration system 7 is filtered layer upon layer and then enters the static filtration system 8, a plurality of porous ceramic filters 14 are arranged in the static filtration system 8 side by side or longitudinally, the inside of each porous ceramic filter 14 is hollow, the center of each porous ceramic filter is provided with an aluminum foam frame 30, the outer layer of each aluminum foam frame 30 is covered with a carbon fiber film 31, the outer layer of each carbon fiber film 31 is sputtered with a silica film 32, the inner wall of each porous ceramic filter 14 is also provided with a biological film 33, and phosphorus, nitrogen and COD in sewage can be further removed.
As shown in fig. 5, after the present invention is used for a period of time, since the particulate filter 21, the vertical holes 26 and the porous ceramic filter 14 are contaminated by impurities in the sewage and even blocked, the dynamic filter system 7 and the static filter system 8 need to be cleaned, a water inlet pipe 34 is disposed at one side of the dynamic filter system 7, after clean water flows into the dynamic filter system 7, an aeration fan 28 is turned on to blow air vertically upwards from the aeration device 27, the air passes through the vertical holes 26 and is blown to the filter plate 20 by the water distribution and air distribution device 25, and since the filter plate is porous, the air passes through the filter plate 20, so that the particulate filter 21 disposed on the filter plate 20 is in a dynamic state, and the aeration device 27 continuously rolls the clean water in the dynamic filter system 7 to clean the dynamic filter system 7. Because a plurality of porous ceramic filters 14 are detachably arranged in the static filtering system 8, the porous ceramic filters 14 can be directly detached and cleaned by using a high-pressure water gun, and the high-pressure water gun can be used for replacing the porous ceramic filters 14. The invention not only can further improve the sewage treatment quality, but also has simple cleaning work, improves the working efficiency, realizes the recycling of the filtering device and has great popularization value.
It is emphasized that the above water and gas distribution device has the same structure as that described in the published patent documents, for example, the publication numbers are: "CN 203291614U", and publication numbers: "CN 203281115U", while in the present invention, the water and gas distributing device is installed at the nozzle of the vertical hole, in order to ensure the uniformity of the blowback gas flow, and will not be described herein. Moreover, the aeration devices are arranged in the contact oxidation tank and the dynamic filtering system, but the two aeration devices have different beneficial effects, and the aeration devices in the contact oxidation tank aim to provide oxygen for the contact oxidation tank, ensure that the oxygen is fully contacted with sewage, and enhance the oxidation effect; the aeration devices arranged in the dynamic filtering system provide back-flushing airflow for the floating plate besides providing oxygen for sewage, so that the floating plate realizes relative dynamic balance, and the uniform airflow entering the filter plate is ensured.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. The utility model provides a multistage water body repair system, includes contact oxidation pond (2), stirring pond, sedimentation tank (6), sludge thickening tank (9) and mud dewatering tank (10), a serial communication port, contact oxidation pond (2) bottom is provided with aeration equipment (27), aeration equipment (27) have nanometer aeration machine (11) through the pipe connection, the stirring pond includes first stirring pond (3), second stirring pond (4) and third stirring pond (5), first stirring pond (3) and second stirring pond (4), second stirring pond (4) and third stirring pond (5) all communicate through the pipeline, third stirring pond (5) with sedimentation tank (6) communicate through the pipeline, the drain has been seted up to sedimentation tank (6) bottom, the drain pass through sewage pipes (16) in proper order with sludge thickening tank (9), Mud dewatering pool (10) intercommunication, be provided with the sludge dewaterer in dewatering pool (10), the outflow side in dewatering pool (10) is provided with mud cake conveyer belt (17), sedimentation tank (6) supernatant outflow side is provided with dynamic filtration system (7), dynamic filtration system (7) outflow side is provided with static filtration system (8).
2. The multistage water body restoration system according to claim 1, wherein the dynamic filtering system (7) comprises a filter plate (20), a floating plate (24) and an aeration device (27), particle filtering materials (21) are accumulated on the filter plate (20), mounting grooves are formed in two sides of an inner cavity of the dynamic filtering system (7), pillars (22) are arranged in the mounting grooves, springs (23) are sleeved on the pillars (22), two ends of the floating plate (24) are fixedly connected with the springs (23), a plurality of vertical holes (26) are formed in the floating plate (24), a water and air distribution device (25) is arranged at the top ends of the vertical holes (26), and the aeration device (27) is sequentially connected with an aeration fan (28) and an air filter (29) through pipelines.
3. A multi-stage water remediation system according to claim 2 wherein the static filtration system (8) comprises a porous ceramic filter (14) removably arranged side by side within it.
4. The multi-stage water body restoration system according to claim 3, wherein an aluminum foam frame (30) is arranged at the center of the inside of the porous ceramic filter (14), a carbon fiber film (31) is covered on the outer layer of the aluminum foam frame (30), a silicon dioxide film (32) is sputtered on the outer layer of the carbon fiber film (31), and a biological film (33) is further arranged on the inner wall of the porous ceramic filter (14).
5. The multistage water remediation system of claim 4 wherein the first stirred tank (3) is provided with a PAC mixer (12) for injecting PAC into the first stirred tank (3).
6. The multi-stage water restoration system according to claim 5, wherein a PAM mixer (13) is arranged on the first stirring tank (4) for injecting PAM into the second stirring tank (4).
7. The multi-stage water body restoration system according to claim 6, wherein the bottom of the sedimentation tank (6) is conical, a check valve (18) is arranged at the water inlet, and a filter screen (19) is arranged in the inner cavity of the sedimentation tank.
8. The multi-stage water body remediation system of claim 7, wherein a sludge pump is arranged between the sludge concentration tank (9) and the sludge dewatering tank (10), and the sludge pump is a screw pump.
9. The multi-stage water body restoration system according to any one of claims 1-8, wherein a water inlet pipeline (1) is arranged on one side of the contact oxidation pond (2), a booster water pump is arranged on the water inlet pipeline (1), and a water outlet pipeline (15) is arranged on the outflow side of the static filtering system (8).
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| CN202110448283.6A CN113087309A (en) | 2021-04-25 | 2021-04-25 | Multistage water body remediation system |
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| CN202110448283.6A CN113087309A (en) | 2021-04-25 | 2021-04-25 | Multistage water body remediation system |
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Application publication date: 20210709 |