CN114538703A - Artificial wetland sewage advanced treatment device with biological filter - Google Patents
Artificial wetland sewage advanced treatment device with biological filter Download PDFInfo
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- CN114538703A CN114538703A CN202210146689.3A CN202210146689A CN114538703A CN 114538703 A CN114538703 A CN 114538703A CN 202210146689 A CN202210146689 A CN 202210146689A CN 114538703 A CN114538703 A CN 114538703A
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- biological filter
- fixed
- filter
- aeration
- partition plate
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- 239000010865 sewage Substances 0.000 title claims abstract description 69
- 238000005192 partition Methods 0.000 claims abstract description 64
- 238000005273 aeration Methods 0.000 claims abstract description 61
- 239000000945 filler Substances 0.000 claims abstract description 43
- 239000002131 composite material Substances 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 239000004677 Nylon Substances 0.000 claims abstract description 12
- 229920001778 nylon Polymers 0.000 claims abstract description 12
- 239000000725 suspension Substances 0.000 claims abstract description 12
- 238000012856 packing Methods 0.000 claims abstract description 11
- 238000004332 deodorization Methods 0.000 claims abstract description 6
- 241000272814 Anser sp. Species 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 109
- 239000004576 sand Substances 0.000 claims description 32
- 238000001914 filtration Methods 0.000 claims description 18
- 239000004575 stone Substances 0.000 claims description 16
- 229910021536 Zeolite Inorganic materials 0.000 claims description 14
- 239000010457 zeolite Substances 0.000 claims description 14
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 10
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- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
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- 239000002781 deodorant agent Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
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- 230000000694 effects Effects 0.000 abstract description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 7
- 239000011574 phosphorus Substances 0.000 abstract description 7
- 238000000746 purification Methods 0.000 abstract description 6
- 244000005700 microbiome Species 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 241000196324 Embryophyta Species 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
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- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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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
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
-
- 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
-
- 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
- C02F2101/105—Phosphorus compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- 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)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to an artificial wetland sewage advanced treatment device with a biological filter, which comprises a filter tank, a composite biological filter and an artificial wetland tank which are sequentially communicated, wherein the composite biological filter comprises a first tank body, a partition plate is fixed in the first tank body, an overflow hole is formed in the upper part of the partition plate, the partition plate partitions the first tank body into a primary biological filter and a secondary biological filter, a deodorization mechanism is arranged at the top of the primary biological filter, and a fir bark layer, a suspension ball filler, a goose pebble layer and an aeration mechanism are sequentially arranged in the primary biological filter from top to bottom; the top of the inside of second grade biological filter rotates and is connected with the live-rollers, and the periphery equipartition of live-rollers has the filler wire, and the inside filter screen that can dismantle of second grade biological filter that is located the live-rollers below is connected with, and the filter screen bottom is fixed with many nylon ropes, is fixed with a plurality of drilled packing rings on the nylon rope. Solves the technical problems of low purification efficiency and poor nitrogen and phosphorus removal effect of the existing artificial wetland sewage treatment device.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to an artificial wetland sewage advanced treatment device with a biofilter.
Background
The artificial wetland is a technology for treating sewage and sludge by using the physical, chemical and biological triple synergistic action of soil, artificial medium, plants and microorganisms in the process of flowing along a certain direction by using sewage and sludge which are controllably dosed to the artificially constructed wetland from the artificially constructed and controlled-operation ground similar to the marshland. The purification principle of the artificial wetland comprises adsorption, detention, filtration, oxidation reduction, precipitation, microbial decomposition, transformation, plant shielding, residue accumulation, transpiration moisture and nutrient absorption and the effects of various animals.
When the artificial wetland sewage treatment device in the prior art is used, sewage is usually directly introduced into the artificial wetland from one end of the wetland through the water distribution pipe for purification treatment. However, due to the complex pollutant components in the sewage, in the process of long-term operation of the artificial wetland, some macromolecular organic matters and suspended matters which are difficult to degrade are accumulated in the artificial wetland in large quantity, so that the water passing capacity of the artificial wetland is reduced, the purification efficiency is reduced, the normal growth of plants and microorganisms is adversely affected, and the nitrogen and phosphorus removal effect of the artificial wetland is reduced.
Disclosure of Invention
The invention aims to provide an artificial wetland sewage advanced treatment device with a biofilter, which is used for solving the technical problems of low purification efficiency and poor denitrification and dephosphorization effects of the artificial wetland sewage treatment device in the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the artificial wetland sewage advanced treatment device with the biofilter comprises a filter tank, a composite biofilter and an artificial wetland tank which are sequentially arranged at intervals, wherein the top of the filter tank is communicated with a water inlet pipe, a first connecting pipe is communicated between the upper part of the filter tank and the lower part of the composite biofilter, a second connecting pipe is communicated between the lower part of the composite biofilter and the top of the artificial wetland tank, water pumps are respectively arranged on the first connecting pipe and the second connecting pipe, and the lower part of the artificial wetland tank is communicated with a water outlet pipe; the composite biological filter comprises a first filter body with an open top end, a partition board vertically and upwards arranged is fixed in the first filter body, an overflow hole is formed in the upper part of the partition board, the partition board divides the interior of the first filter body into two independent chambers which are respectively a first-stage biological filter and a second-stage biological filter, a deodorization mechanism is arranged at the top of the first-stage biological filter, a first transverse partition board, a second transverse partition board and a water distribution board which are horizontally arranged are sequentially fixed in the first-stage biological filter from top to bottom, water inlet holes are formed in the first transverse partition board and the second transverse partition board, the two water inlet holes are vertically staggered, a plurality of water distribution holes which are uniformly spaced are formed in the water distribution board, an aeration mechanism is arranged in the first-stage biological filter below the water distribution board, a goose pebble layer is filled between the water distribution board and the second transverse partition board, and a suspension ball filler is filled between the second transverse partition board and the first transverse partition board, the top of the first transverse partition plate is paved with a fir bark layer, and the overflow holes are communicated with the inner part of the fir bark layer; the inside top of second grade biological filter rotates and is connected with the live-rollers that the level set up, and the periphery equipartition of live-rollers has the filler wire, and the filter screen that the level set up is connected with can be dismantled to the inside second grade biological filter that is located the live-rollers below, and the bottom of filter screen is fixed with the nylon rope that many even intervals set up, is fixed with the filler ring that a plurality of even intervals set up along its length direction on the nylon rope.
Preferably, the suspension ball filler comprises a spherical shell, the surface of the spherical shell is hollowed, a round fiber bundle is arranged inside the spherical shell, the spherical shell is made of polyethylene plastics, and the filler yarns are made of polyamide fibers.
Preferably, the packing ring comprises an outer ring and an inner ring which are concentrically arranged, a plurality of connecting rods which are uniformly arranged at intervals are fixed between the outer ring and the inner ring, a plurality of obliquely arranged branch rods are fixed on two sides of each connecting rod along the length direction of the connecting rod, and the outer ring, the inner ring, the connecting rods and the branch rods are all made of polypropylene plastics.
Preferably, deodorant mechanism includes that the level sets up the fixed disk in one-level biological filter top, be fixed with the bracing piece that a plurality of even intervals set up between the edge of fixed disk bottom and the edge at one-level biological filter top, the bracing piece slope sets up, can dismantle between the bottom of fixed disk and the top of one-level biological filter and be connected with the anticorrosion membrane that is used for covering one-level biological filter open-top, the material of anticorrosion membrane is the fluorocarbon fiber, form a toper chamber between the top of anticorrosion membrane and one-level biological filter, the intermediate position of fixed disk is fixed with the exhaust tube that runs through the fixed disk, the one end of exhaust tube extends to the toper intracavity portion.
Preferably, aeration mechanism is including setting up the aeration fan in first cell body outside, aeration fan's output intercommunication has the air-supply line, the air-supply line extends to the inside and the intercommunication of one-level biological filter has the aeration dish that the level set up, the periphery of aeration dish sets up with the inner wall interval of one-level biological filter, the top of aeration dish is fixed with the aeration pipe that a plurality of even intervals set up, the aeration pipe is the cylindric structure of inside hollow setting, the aeration hole that a plurality of even intervals set up is all seted up to the circumference wall of aeration pipe and the top of aeration pipe, the aeration dish is inside to be seted up the aeration passageway that is linked together with the aeration pipe, the bottom and the air-supply line of aeration passageway are linked together.
Preferably, the constructed wetland pool comprises a second pool body with an open top, a third transverse partition plate horizontally arranged is fixed above the inside of the second pool body, a soil layer is arranged at the top of the third transverse partition plate, wetland plants are planted on the soil layer, first vertical partition plates and second vertical partition plates which are arranged at intervals are fixed between the bottom of the third transverse partition plate and the bottom of the inside of the second pool body, water permeable holes are formed in the lower portion of the first vertical partition plate and the upper portion of the second vertical partition plate on the third transverse partition plate, the water permeable holes formed in the third transverse partition plate are located at one end, close to the composite biofilter, of the third transverse partition plate, the first vertical partition plate and the second vertical partition plate, three independent chambers are formed among the third transverse partition plate, the first filter chamber, the second filter chamber and the third filter chamber, the inside of the first filter chamber, the inside of the second filter chamber, the third filter chamber, The zeolite layer, the medical stone layer and the ceramsite sand layer which are laid in the first filter chamber are sequentially arranged from top to bottom, the zeolite layer, the medical stone layer and the ceramsite sand layer which are laid in the second filter chamber are sequentially arranged from bottom to top, and the water outlet pipe is communicated with the ceramsite sand layer at the bottom of the third filter chamber.
Preferably, one end of the second connecting pipe, which is far away from the composite biofilter, is communicated with a rotary water distribution mechanism, the rotary water distribution mechanism comprises a mounting frame fixed at the top of the second tank body, a mounting disc horizontally arranged is fixed at the top of the mounting frame, a water distribution pipe vertically and downwardly arranged is rotatably connected to the mounting disc through a bearing, the top end of the water distribution pipe extends to the top of the mounting disc and is communicated with the second connecting pipe through a rotary joint, the bottom end of the water distribution pipe downwardly extends to the inside of the second tank body and is fixed with the water distribution disc, the water distribution disc is located above wetland plants, a first driving motor is fixed at the top of the mounting disc, an output shaft of the first driving motor penetrates through the mounting disc and is vertically and downwardly arranged, an output shaft of the first driving motor extends to the bottom of the mounting disc and is fixed with a driving gear, and a driven gear meshed with the driving gear is fixedly sleeved on the water distribution pipe.
Preferably, the cross section of the water distribution disc is cross-shaped, the bottom of the water distribution pipe is fixed in the middle of the top of the water distribution disc and communicated with the inside of the water distribution disc, and the bottom of the water distribution disc is provided with a plurality of water outlet holes which are uniformly arranged at intervals.
Preferably, the filtering ponds include the open third cell body that sets up in top, and the top of third cell body can be dismantled and be connected with the top cap, and the inlet tube is fixed on the top cap, and the top cap bottom is fixed with downwardly extending's filtration basket, filters the top that the basket is located third cell body inside, and the inside below of third cell body is fixed with W type precipitation tank, and the bottom intercommunication of W type precipitation tank has the sand discharge pipe, is provided with the sand discharge valve on the sand discharge pipe.
Preferably, a second driving motor is fixed on the outer wall of the upper part of the secondary biofilter, one end of a rotating shaft of the rotating roller is rotatably connected to the partition plate through a bearing, and the other end of the rotating shaft of the rotating roller extends to the outside of the secondary biofilter and is in transmission connection with an output shaft of the second driving motor.
The invention has the beneficial effects that: (1) by arranging the filter tank and the composite biological filter tank, before sewage enters the artificial wetland tank, solid garbage and impurities in the sewage are firstly removed through the filter tank, sludge and sand in the sewage are subjected to primary precipitation separation, then the sewage enters the composite biological filter tank, and organic pollutants are decomposed and metabolized by using microorganisms attached to fillers in the composite biological filter tank, so that the burden of subsequent artificial wetland tank treatment is reduced, the sewage treatment efficiency is improved, and the nitrogen and phosphorus removal effect is improved; (2) the interior of the composite biological filter is divided into a primary biological filter and a secondary biological filter, a fir bark layer, a suspension ball filler and a cobble layer are sequentially filled in the primary biological filter from top to bottom, an aeration mechanism is arranged, a rotating roller is rotatably connected above the interior of the secondary biological filter, filler wires are fixed on the periphery of the rotating roller, nylon ropes and filler rings are arranged, after sewage enters the interior of the composite biological filter, continuous oxygen is provided for aerobic bacteria metabolism under the action of the aeration mechanism, the sewage enters the interior of the secondary biological filter through overflow holes after being subjected to metabolic decomposition of microorganisms attached to the cobble layer, the suspension ball filler and the fir bark layer in sequence, the rotating roller is partially immersed in the sewage, under the continuous rotation of the rotating roller, the filler wires are alternately contacted with the sewage and air, and after a period of rotation, a layer of biological film is attached on the filler wires, when the filler wires are transferred into sewage, the biological film adsorbs organic pollutants in the sewage and absorbs dissolved oxygen in a water film outside the biological film to decompose organic matters, microorganisms can breed in the process, when the filler wires are transferred out of the inside of the sewage along with the rotating roller, the filler wires are contacted with air, the air is continuously dissolved in the water film to increase the dissolved oxygen, in the process, the biological film attached on the filler wires, the sewage and the air are transmitted between the organic matters and the oxygen to form a continuous process of adsorption, oxidative decomposition and oxygen absorption, so that the sewage is continuously purified, meanwhile, the microorganisms attached on the filler rings further decompose and metabolize the organic matters in the sewage, each filler ring is penetrated into a solid long strip structure through a nylon rope, and the specific surface area of the filler rings in a limited space is increased, the microorganism can be ensured to be uniformly implanted on each packing ring, good activity and gap variability are kept, larger and larger specific surface area can be obtained in the operation process, good metabolism of the microorganism is facilitated, gas, water and the microorganism are fully mixed, infiltrated, contacted and exchanged, and the effects of nitrogen and phosphorus removal are improved; (3) by arranging the deodorization mechanism, the biogas generated in the sewage treatment process is pumped, the possibility of biogas overflow is reduced as much as possible, and secondary pollution to the surrounding environment is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a composite biological filter;
FIG. 3 is a schematic structural view of an artificial wetland pool;
FIG. 4 is a schematic structural diagram of a suspension ball filler;
FIG. 5 is a schematic diagram of the packing ring structure;
FIG. 6 is a schematic structural view of an aeration disc;
fig. 7 is a schematic structural view of the water distribution tray.
Reference numerals: 1-filter tank, 2-composite biological filter tank, 3-artificial wetland tank, 4-water inlet pipe, 5-first connecting pipe, 6-second connecting pipe, 7-water pump, 8-water outlet pipe, 9-first tank, 10-division plate, 11-overflow hole, 12-first biological filter tank, 13-second biological filter tank, 14-fixed disk, 15-support rod, 16-corrosion-resistant membrane, 17-conical cavity, 18-exhaust pipe, 19-water outlet hole, 20-first transverse partition plate, 21-second transverse partition plate, 22-water distribution plate, 23-water inlet hole, 24-water distribution hole, 25-aeration fan, 26-air inlet pipe, 27-aeration disk, 28-aeration pipe, 29-aeration hole, 30-aeration channel, 31-cobble layer, 32-suspension ball filler, 33-spherical shell, 34-round fiber bundle, 35-fir bark layer, 36-rotating roller, 37-second driving motor, 38-filler wire, 39-filter screen, 40-installation block, 41-installation groove, 42-fixture block, 43-nylon rope, 44-packing ring, 45-outer ring, 46-inner ring, 47-connecting rod, 48-branch rod, 49-second tank, 50-third transverse clapboard, 51-soil layer, 52-wetland plant, 53-first vertical clapboard, 54-second vertical clapboard, 55-permeable hole, 56-first filter chamber, 57-second filter chamber, 58-third filter chamber, 59-zeolite layer, 60-medical stone layer, 61-ceramsite sand layer, 62-installation frame, 63-installation disc, 64-water distribution pipe, 65-rotary joint, 66-water distribution disc, 67-first driving motor, 68-driving gear, 69-driven gear, 70-third tank, 71-top cover, 72-filter basket, 73-W type sedimentation tank, 74-sand discharge pipe.
Detailed Description
As shown in figure 1, the invention comprises a filter tank 1, a composite biological filter tank 2 and an artificial wetland tank 3 which are sequentially arranged at intervals, wherein the top of the filter tank 1 is communicated with a water inlet pipe 4, a first connecting pipe 5 is communicated between the upper part of the filter tank 1 and one side of the lower part of the composite biological filter tank 2, a second connecting pipe 6 is communicated between the other side of the lower part of the composite biological filter tank 2 and the top of the artificial wetland tank 3, water pumps 7 are respectively arranged on the first connecting pipe 5 and the second connecting pipe 6, the lower part of the artificial wetland tank 3 is communicated with a water outlet pipe 8, and a water outlet valve is arranged on the water outlet pipe 8. As shown in fig. 2, the composite biofilter 2 comprises a first tank body 9 with an open top end, a partition plate 10 vertically and upwardly arranged is fixed inside the first tank body 9, an overflow hole 11 is formed in the upper portion of the partition plate 10, the partition plate 10 separates the inside of the first tank body 9 into two independent chambers, namely a first-stage biofilter 12 and a second-stage biofilter 13, the top of the second-stage biofilter 13 is open, and a deodorization mechanism is arranged at the top of the first-stage biofilter 12. The deodorization mechanism comprises a fixed disk 14 horizontally arranged above the primary biological filter 12, a plurality of supporting rods 15 which are uniformly arranged at intervals are fixed between the edge of the bottom of the fixed disk 14 and the edge of the top of the primary biological filter 12, the supporting rods 15 are obliquely arranged, an anti-corrosion film 16 for covering an opening on the top of the primary biological filter 12 is detachably connected between the bottom of the fixed disk 14 and the top of the primary biological filter 12, the top of the anti-corrosion film 16 and the fixed disk 14 and the bottom of the anti-corrosion film 16 and the top of the primary biological filter 12 are detachably connected through fixing bolts, the anti-corrosion film 16 is made of fluorocarbon fiber, a conical cavity 17 is formed between the anti-corrosion film 16 and the top of the primary biological filter 12, an air exhaust pipe 18 penetrating through the fixed disk 14 is fixed in the middle position of the fixed disk 14, and a sealing ring is arranged at the joint of the air exhaust pipe 18 and the fixed disk 14, one end of the air suction pipe 18 extends to the inside of the conical cavity 17, and the other end of the air suction pipe 18 extends to the outside of the primary biofilter 12 and is communicated with an air suction fan (not shown in the figure). Under the action of the air exhaust fan, biogas generated by microbial metabolism in the first tank 9 is exhausted outwards through the air exhaust pipe 18, and is subjected to centralized treatment, so that a large amount of biogas is prevented from escaping into the air, and secondary pollution to the surrounding environment is avoided. The inside from the top down of one-level biological filter 12 is fixed with the first transverse baffle 20 that the level set up in proper order, second transverse baffle 21, water distribution plate 22, inlet opening 23 has all been seted up on first transverse baffle 20 and the second transverse baffle 21, two inlet opening 23 crisscross settings from top to bottom, the inlet opening 23 of seting up on first transverse baffle 20 is located the one end that first transverse baffle 20 deviates from division board 10, set up the water distribution hole 24 that a plurality of even intervals set up on water distribution plate 22, the inside aeration equipment that is provided with of one-level biological filter 12 that is located water distribution plate 22 below. The aeration mechanism comprises an aeration fan 25 arranged outside the first tank body 9, the output end of the aeration fan 25 is communicated with an air inlet pipe 26, the air inlet pipe 26 extends into the first-stage biological filter 12 and is communicated with an aeration disc 27 horizontally arranged, a sealing ring is arranged at the joint of the air inlet pipe 26 and the first-stage biological filter 12, the periphery of the aeration disc 27 and the inner wall of the first-stage biological filter 12 are arranged at intervals, as shown in fig. 6, aeration pipes 28 which are uniformly arranged at intervals are fixed at the top of the aeration disc 27, the aeration pipes 28 are cylindrical structures which are arranged in a hollow manner, and a plurality of aeration holes 29 which are uniformly arranged at intervals are arranged on the circumferential wall of the aeration pipe 28 and at the top of the aeration pipe 28. An aeration channel 30 communicated with the aeration pipe 28 is formed in the aeration disc 27, and the bottom end of the aeration channel 30 is communicated with the air inlet pipe 26. The aeration disc 27 and the aeration pipe 28 are arranged to ensure the uniformity of aeration to the inner part of the first-stage biological filter 12. The cobble layer 31 is filled between the water distribution plate 22 and the second transverse partition plate 21, cobbles can filter impurities such as organic matters, nitrogen, phosphorus, suspended matters and the like in sewage, and the concentration of pollutants in the sewage is reduced. The suspension ball filler 32 is filled between the second transverse partition plate 21 and the first transverse partition plate 20, as shown in fig. 4, the suspension ball filler 32 includes a spherical shell 33, the surface of the spherical shell 33 is hollowed, a circular fiber bundle 34 is arranged inside the spherical shell 33, and the spherical shell 33 is made of polyethylene plastic. The suspension ball filler 32 mainly plays a role of a biomembrane carrier, provides good conditions for microbial implantation, has the function of intercepting suspended matters, has the advantages of strong biological adhesion, large specific surface area, high porosity, good chemical and biological stability, and high efficiency of filtering and purifying sewage. The top of the first transverse clapboard 20 is paved with a fir bark layer 35, the overflow holes 11 are communicated with the inside of the fir bark layer 35, and the fir bark has strong adsorption effect on heavy metal ions in sewage. A rotating roller 36 which is horizontally arranged is rotatably connected above the interior of the secondary biological filter 13, a second driving motor 37 is fixed on the outer wall of the upper part of the secondary biological filter 13, one end of a rotating shaft of the rotating roller 36 is rotatably connected on the partition plate 10 through a bearing, the other end of the rotating shaft of the rotating roller 36 extends to the exterior of the secondary biological filter 13 and is in transmission connection with an output shaft of the second driving motor 37, a sealing bearing is arranged at the joint of the rotating shaft of the rotating roller 36 and the secondary biological filter 13, filler wires 38 are uniformly distributed on the periphery of the rotating roller 36, and the filler wires 38 are made of polyamide fibers. A horizontally arranged filter screen 39 is detachably connected inside the second-stage biological filter 13 below the rotating roller 36, mounting blocks 40 are fixed on two sides inside the second-stage biological filter 13, mounting grooves 41 are formed in the tops of the mounting blocks 40, clamping blocks 42 matched with the mounting grooves 41 are fixed at two ends of the bottom of the filter screen 39, and the clamping blocks 42 are clamped inside the mounting grooves 41. A plurality of nylon ropes 43 are fixed to the bottom of the filter screen 39 at regular intervals, and a plurality of packing rings 44 are fixed to the nylon ropes 43 at regular intervals along the length direction. As shown in fig. 5, the packing ring 44 includes an outer ring 45 and an inner ring 46 which are concentrically arranged, a plurality of connecting rods 47 which are uniformly arranged at intervals are fixed between the outer ring 45 and the inner ring 46, a plurality of obliquely arranged branch rods 48 are fixed on both sides of the connecting rods 47 along the length direction thereof, and the outer ring 45, the inner ring 46, the connecting rods 47 and the branch rods 48 are all made of polypropylene plastics. Each packing ring 44 is arranged in a solid strip-shaped structure in a penetrating way through the nylon rope 43, the specific surface area of the packing ring 44 in a limited space is increased, microorganisms can be ensured to uniformly land on each packing ring 44, and the growth and the propagation of the microorganisms are facilitated.
As shown in fig. 3, the artificial wetland pool 3 comprises a second pool body 49 with an open top, a horizontally arranged third transverse partition plate 50 is fixed above the inside of the second pool body 49, a soil layer 51 is arranged on the top of the third transverse partition plate 50, wetland plants 52 are planted on the soil layer 51, and the wetland plants 52 can be selected from one or more of reed, common cattail and canna, so that the artificial wetland pool not only can play a role of beauty, but also can undertake a part of sewage treatment task. A first vertical partition plate 53 and a second vertical partition plate 54 which are arranged at intervals are fixed between the bottom of the third transverse partition plate 50 and the bottom end of the interior of the second tank body 49, one end of the third transverse partition plate 50 close to the composite biological filter 2, the lower part of the first vertical partition plate 53 and the upper part of the second vertical partition plate 54 are respectively provided with a water permeable hole 55, three independent chambers are formed among the third transverse partition plate 50, the first vertical partition plate 53 and the second vertical partition plate 54 and respectively comprise a first filter chamber 56, a second filter chamber 57 and a third filter chamber 58, a zeolite layer 59, a medical stone layer 60 and a ceramsite sand layer 61 are respectively laid in the interior of the first filter chamber 56, the interior of the second filter chamber 57 and the interior of the third filter chamber 58, the particle size of the zeolite is larger than that of the medical stone, and the particle size of the medical stone layer 59, the medical stone layer 60 and the ceramsite sand layer 61 are laid in the interior of the first filter chamber 56, The ceramsite sand layer 61, the zeolite layer 59, the medical stone layer 60 and the ceramsite sand layer 61 which are laid in the third filter chamber 58 are sequentially arranged from top to bottom, the zeolite layer 59, the medical stone layer 60 and the ceramsite sand layer 61 which are laid in the second filter chamber 57 are sequentially arranged from bottom to top, and the water outlet pipe 8 is communicated with the ceramsite sand layer 61 at the bottom of the third filter chamber 58. The flowing path of the sewage under the second tank body 49 is S-shaped, the retention time of the sewage in the second tank body 49 is prolonged, and the sewage is filtered by the zeolite layer 59, the medical stone layer 60 and the ceramsite sand layer 61 for multiple times, so that the impurities such as organic matters, nitrogen, phosphorus, suspended matters and the like in the sewage are fully filtered, and the filtering and purifying effects are improved. One end of the second connecting pipe 6, which is far away from the composite biological filter 2, is communicated with a rotary water distribution mechanism, the rotary water distribution mechanism comprises a mounting frame 62 fixed at the top of the second tank body 49, a horizontally arranged mounting disc 63 is fixed at the top of the mounting frame 62, a vertical and downward arranged water distribution pipe 64 is rotatably connected to the mounting disc 63 through a bearing, the top end of the water distribution pipe 64 extends to the upper side of the mounting disc 63 and is communicated with the second connecting pipe 6 through a rotary joint 65, the rotary joint 65 is the prior art, the specific structure is not repeated herein, the bottom end of the water distribution pipe 64 extends downward to the inside of the second tank body 49 and is fixed with a water distribution disc 66, the water distribution disc 66 is positioned above the wetland plants 52, the top of the mounting disc 63 is fixed with a first driving motor 67, the output shaft of the first driving motor 67 penetrates through the mounting disc 63 and is vertically and downward arranged, the output shaft of the first driving motor 67 extends to the lower side of the mounting disc 63 and is fixed with a driving gear 68, the water distribution pipe 64 is fixedly sleeved with a driven gear 69 engaged with the driving gear 68. The output shaft of the first driving motor 67 rotates to drive the driving gear 68 to rotate, and the driving gear 68 drives the driven gear 69, the water distribution pipe 64 and the water distribution plate 66 to rotate in turn. As shown in fig. 7, the cross section of the water distribution tray 66 is cross-shaped, the bottom of the water distribution pipe 64 is fixed at the middle position of the top of the water distribution tray 66 and is communicated with the inside of the water distribution tray 66, and the bottom of the water distribution tray 66 is provided with a plurality of water outlet holes 19 which are uniformly spaced. The rotary water distribution mechanism can distribute the sewage in the second tank body 49 uniformly at fixed time and fixed point, and the utilization rate of the second tank body 49 is greatly improved.
As shown in fig. 1, the filtering tank 1 includes a third tank body 70 with an open top, the top of the third tank body 70 is detachably connected with a top cover 71, the top cover 71 and the third tank body 70 are detachably connected through bolts, the water inlet pipe 4 is fixed on the top cover 71 and extends downwards to the inside of the third tank body 70, the bottom of the top cover 71 is fixed with a filtering basket 72 extending downwards, the filtering basket 72 is located above the inside of the third tank body 70, the outer wall of the filtering basket 72 is arranged at an interval with the inner wall of the third tank body 70, the lower part of the inside of the third tank body 70 is fixed with a W-shaped settling tank 73, the bottom of the W-shaped settling tank 73 is communicated with a sand discharge pipe 74, and the sand discharge pipe 74 is provided with a sand discharge valve. Sewage filters basket 72 through inlet tube 4 entering filter basket 72 in, and solid rubbish is blockked on filter basket 72, alleviates the running load of follow-up equipment, avoids the pipeline to produce the jam, promotes sewage treatment's effect. A part of the silt mixed in the sewage is precipitated in the W-shaped precipitation tank 73 and then discharged outside through the sand discharge pipe 74.
The working principle and the working process of the invention are as follows: when in use, sewage enters the filtering basket 72 through the water inlet pipe 4, is filtered by the filtering basket 72, solid garbage is blocked on the filtering basket 72, a part of muddy sand mixed in the sewage is precipitated in the W-shaped precipitation tank 73 and then is discharged outwards through the sand discharge pipe 74, clear water on the upper layer enters the primary biological filter 12 through the first connecting pipe 5 under the action of the water pump 7, fresh air is continuously introduced into the primary biological filter 12 through the aeration mechanism, the sewage enters the cobble layer 31 upwards through the water distribution plate 22 for filtering, passes through the suspended ball filler 32 and the cedar bark layer 35 in sequence, carries out metabolic decomposition on organic pollutants in the sewage through microorganisms attached to the cedar bark layer 35, the suspended ball filler 32 and the cobble layer 31, then enters the secondary biological filter 13 through the overflow hole 11, the rotating roller 36 is partially immersed in the sewage, and under the continuous rotation of the rotating roller 36, the filler wires 38 alternately contact with sewage and air, after a period of rotation, a layer of biofilm is attached to the filler wires 38, when the filler wires 38 are rotated into the sewage, the biofilm adsorbs organic pollutants in the sewage and absorbs dissolved oxygen in a water film outside the biofilm to decompose the organic matters, microorganisms can breed themselves in the process, when the filler wires 38 are rotated out of the inside of the sewage along with the rotating rollers 36, the filler wires 38 contact with the air, the air is continuously dissolved in the water film to increase the dissolved oxygen, in the process, the transfer between the organic matters and the oxygen is carried out among the biofilm attached to the filler wires 38, the sewage and the air, a continuous process of adsorption, oxidative decomposition and oxygen absorption is formed, the sewage is continuously purified, and meanwhile, the microorganisms attached to the filler rings 44 further decompose and metabolize the organic matters in the sewage, in the purification process, the pumping pipe 18 pumps the biogas generated in the sewage treatment process, so that the possibility of biogas overflow is reduced as much as possible; then under the action of the water pump 7, the sewage enters the second tank body 49 through the second connecting pipe 6 and the rotary water replenishing mechanism, passes through the wetland plant 52 and the water permeable holes 55 arranged on the third transverse partition plate 50, enters the first filter chamber 56, is sequentially filtered by the zeolite layer 59, the medical stone layer 60 and the ceramsite sand layer 61, then removes impurities such as organic matters, nitrogen, phosphorus, suspended matters and the like in the sewage, enters the second filter chamber 57 through the water permeable holes 55 arranged on the first vertical partition plate 53, is sequentially filtered by the zeolite layer 59, the medical stone layer 60 and the ceramsite sand layer 61, enters the third filter chamber 58 through the water permeable holes 55 arranged on the second vertical partition plate 54, is sequentially filtered by the zeolite layer 59, the medical stone layer 60 and the ceramsite sand layer 61, so that the flowing path of the sewage below the inside of the second tank body 49 is S-shaped, and finally is discharged outwards through the water outlet pipe 8.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (10)
1. The utility model provides an artificial wetland sewage advanced treatment unit with biological filter which characterized in that: the device comprises a filter tank, a composite biological filter and an artificial wetland tank which are sequentially arranged at intervals, wherein the top of the filter tank is communicated with a water inlet pipe, a first connecting pipe is communicated between the upper part of the filter tank and the lower part of the composite biological filter, a second connecting pipe is communicated between the lower part of the composite biological filter and the top of the artificial wetland tank, water pumps are arranged on the first connecting pipe and the second connecting pipe, and the lower part of the artificial wetland tank is communicated with a water outlet pipe; the composite biological filter comprises a first filter body with an open top end, a partition plate is fixed in the first filter body and vertically arranged upwards, an overflow hole is formed in the upper portion of the partition plate, the partition plate divides the interior of the first filter body into two independent chambers which are respectively a primary biological filter and a secondary biological filter, a deodorization mechanism is arranged at the top of the primary biological filter, a first transverse partition plate, a second transverse partition plate and a water distribution plate are sequentially fixed in the primary biological filter from top to bottom and horizontally arranged, water inlet holes are formed in the first transverse partition plate and the second transverse partition plate, the two water inlet holes are arranged in a vertically staggered manner, a plurality of water distribution holes are formed in the water distribution plate and uniformly spaced, an aeration mechanism is arranged in the primary biological filter below the water distribution plate, a goose pebble layer is filled between the water distribution plate and the second transverse partition plate, and a suspension ball filler is filled between the second transverse partition plate and the first transverse partition plate, the top of the first transverse partition plate is paved with a fir bark layer, and the overflow holes are communicated with the inner part of the fir bark layer; the inside top of second grade biological filter rotates and is connected with the live-rollers that the level set up, and the periphery equipartition of live-rollers has the filler wire, and the filter screen that the level set up is connected with can be dismantled to the inside second grade biological filter that is located the live-rollers below, and the bottom of filter screen is fixed with the nylon rope that many even intervals set up, is fixed with the filler ring that a plurality of even intervals set up along its length direction on the nylon rope.
2. The constructed wetland sewage advanced treatment unit with a biofilter according to claim 1, characterized in that: the suspension ball filler comprises a spherical shell, the surface of the spherical shell is hollowed, a round fiber bundle is arranged inside the spherical shell, the spherical shell is made of polyethylene plastics, and the filler yarns are made of polyamide fibers.
3. The constructed wetland sewage advanced treatment unit with a biofilter according to claim 2, characterized in that: the packing ring comprises an outer ring and an inner ring which are concentrically arranged, a plurality of connecting rods which are uniformly arranged at intervals are fixed between the outer ring and the inner ring, a plurality of obliquely arranged branch rods are fixed on two sides of each connecting rod along the length direction of the connecting rod, and the outer ring, the inner ring, the connecting rods and the branch rods are all made of polypropylene plastics.
4. The constructed wetland sewage advanced treatment unit with a biofilter according to claim 2, characterized in that: deodorant mechanism sets up the fixed disk in one-level biological filter top including the level, be fixed with the bracing piece that a plurality of even intervals set up between the edge at fixed disk bottom and the edge at one-level biological filter top, the bracing piece slope sets up, can dismantle between the bottom of fixed disk and the top of one-level biological filter and be connected with the anticorrosive film that is used for covering one-level biological filter open-top, the material of anticorrosive film is the fluorocarbon fiber, form a toper chamber between the top of anticorrosive film and one-level biological filter, the intermediate position of fixed disk is fixed with the exhaust tube that runs through the fixed disk, the one end of exhaust tube extends to the toper intracavity portion.
5. The constructed wetland sewage advanced treatment unit with a biofilter according to claim 2, characterized in that: aeration mechanism is including setting up the aeration fan in first cell body outside, aeration fan's output intercommunication has the air-supply line, the air-supply line extends to the inside and the intercommunication of one-level biological filter has the aeration dish that the level set up, the periphery of aeration dish sets up with the inner wall interval of one-level biological filter, the top of aeration dish is fixed with the aeration pipe that a plurality of even intervals set up, the aeration pipe is the cylindric structure of inside hollow setting, the aeration hole that a plurality of even intervals set up is all seted up at the top of aeration pipe on the circumference wall of aeration pipe, the aeration dish is inside to set up the aeration channel who is linked together with the aeration pipe, the bottom and the air-supply line of aeration channel are linked together.
6. The constructed wetland sewage advanced treatment unit with a biofilter according to claim 2, characterized in that: the artificial wetland pool comprises a second pool body with an open top, a third transverse clapboard horizontally arranged is fixed above the inside of the second pool body, a soil layer is arranged at the top of the third transverse clapboard, wetland plants are planted on the soil layer, a first vertical clapboard and a second vertical clapboard which are arranged at intervals are fixed between the bottom of the third transverse clapboard and the bottom of the inside of the second pool body, permeable holes are respectively arranged on the third transverse clapboard, the lower part of the first vertical clapboard and the upper part of the second vertical clapboard, the permeable holes arranged on the third transverse clapboard are positioned at one end of the third transverse clapboard close to the composite biological filter pool, three independent cavities are formed among the third transverse clapboard, the first vertical clapboard and the second vertical clapboard, and are respectively a first filter chamber, a second filter chamber and a third filter chamber, a zeolite layer is respectively laid inside the first filter chamber, the second filter chamber and the third filter chamber, The medical stone layer and the ceramsite sand layer are sequentially arranged from top to bottom, the zeolite layer, the medical stone layer and the ceramsite sand layer are sequentially arranged from bottom to top, the zeolite layer, the medical stone layer and the ceramsite sand layer are sequentially arranged in the second filtering chamber, and the water outlet pipe is communicated with the ceramsite sand layer at the bottom of the third filtering chamber.
7. The constructed wetland sewage advanced treatment unit with a biofilter according to claim 6, characterized in that: one end intercommunication that the second connecting pipe deviates from compound biological filter has rotatory water distribution mechanism, rotatory water distribution mechanism is including fixing the mounting bracket at second cell body top, the top of mounting bracket is fixed with the mounting disc that the level set up, be connected with the water distributor of vertical downward setting through the bearing rotation on the mounting disc, the top of water distributor extends to the mounting disc top and is linked together through rotary joint and second connecting pipe, the bottom downwardly extending of water distributor is inside and be fixed with the water distributor to the second cell body, the water distributor is located the top of wetland plant, the top of mounting disc is fixed with first driving motor, first driving motor's output shaft runs through the mounting disc and vertical downward setting, first driving motor's output shaft extends to the mounting disc below and is fixed with the driving gear, fixed cover is equipped with the driven gear with driving gear engaged with.
8. The constructed wetland sewage advanced treatment unit with a biofilter according to claim 7, characterized in that: the cross section of the water distribution plate is cross-shaped, the bottom of the water distribution pipe is fixed in the middle of the top of the water distribution plate and communicated with the inside of the water distribution plate, and a plurality of water outlet holes are formed in the bottom of the water distribution plate and are uniformly spaced.
9. The constructed wetland sewage advanced treatment unit with a biofilter according to any one of claims 1 to 8, characterized in that: the filtering tank comprises a third tank body with an open top end, the top of the third tank body is detachably connected with a top cover, a water inlet pipe is fixed on the top cover, the bottom of the top cover is fixed with a filtering basket extending downwards, the filtering basket is located above the inside of the third tank body, a W-shaped settling tank is fixed below the inside of the third tank body, the bottom of the W-shaped settling tank is communicated with a sand discharge pipe, and a sand discharge valve is arranged on the sand discharge pipe.
10. The constructed wetland sewage advanced treatment unit with a biofilter according to any one of claims 1 to 8, characterized in that: a second driving motor is fixed on the outer wall of the upper part of the secondary biological filter, one end of a rotating shaft of the rotating roller is rotatably connected on the partition plate through a bearing, and the other end of the rotating shaft of the rotating roller extends to the outside of the secondary biological filter and is in transmission connection with an output shaft of the second driving motor.
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