CN106698665A - Multilevel distributed oyster-shell ceramsite biologic filter column wastewater treatment process and device - Google Patents
Multilevel distributed oyster-shell ceramsite biologic filter column wastewater treatment process and device Download PDFInfo
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- CN106698665A CN106698665A CN201710127818.3A CN201710127818A CN106698665A CN 106698665 A CN106698665 A CN 106698665A CN 201710127818 A CN201710127818 A CN 201710127818A CN 106698665 A CN106698665 A CN 106698665A
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- oyster shell
- post
- sewage
- filter
- haydite
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004065 wastewater treatment Methods 0.000 title abstract 4
- 239000010865 sewage Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000005273 aeration Methods 0.000 claims abstract description 21
- 229920003023 plastic Polymers 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 15
- 244000005700 microbiome Species 0.000 claims abstract description 14
- 230000002572 peristaltic Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 241000237502 Ostreidae Species 0.000 claims description 66
- 235000020636 oyster Nutrition 0.000 claims description 66
- 239000000919 ceramic Substances 0.000 claims description 21
- 239000000706 filtrate Substances 0.000 claims description 11
- 238000011068 load Methods 0.000 claims description 11
- 238000011049 filling Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 239000008213 purified water Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 23
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 22
- 239000011574 phosphorus Substances 0.000 abstract description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 10
- 239000002351 wastewater Substances 0.000 abstract description 7
- 235000015097 nutrients Nutrition 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 19
- CVTZKFWZDBJAHE-UHFFFAOYSA-N [N].N Chemical compound [N].N CVTZKFWZDBJAHE-UHFFFAOYSA-N 0.000 description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 238000009826 distribution Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000011105 stabilization Methods 0.000 description 6
- 241000276438 Gadus morhua Species 0.000 description 5
- 235000019516 cod Nutrition 0.000 description 5
- 238000006396 nitration reaction Methods 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- -1 nitrite nitrogen Chemical compound 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 241000108664 Nitrobacteria Species 0.000 description 3
- 235000015450 Tilia cordata Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 229960003563 Calcium Carbonate Drugs 0.000 description 2
- 230000037250 Clearance Effects 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000035512 clearance Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- ZKHQWZAMYRWXGA-KQYNXXCUSA-N Adenosine triphosphate Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(=O)OP(O)(=O)OP(O)(O)=O)[C@@H](O)[C@H]1O ZKHQWZAMYRWXGA-KQYNXXCUSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 241000565118 Cordylophora caspia Species 0.000 description 1
- 230000036740 Metabolism Effects 0.000 description 1
- 206010061529 Polyp Diseases 0.000 description 1
- 241000282849 Ruminantia Species 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H Tricalcium phosphate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001112 coagulant Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000035786 metabolism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 238000007034 nitrosation reaction Methods 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002441 reversible Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing Effects 0.000 description 1
- 239000000271 synthetic detergent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
-
- 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
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- 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
-
- 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
Abstract
The invention discloses a multilevel distributed oyster-shell ceramsite biologic filter column wastewater treatment process and device. The wastewater treatment process is characterized in that marine waste oyster-shells and ceramsite are adopted as fillers, the fillers are charged in a stratified multilevel alternate sequential upward distributing way on a supporting layer in a filter column according to the volume ratio of the oyster-shell to the ceramsite being 1:2.5 to 3.5, and the two fillers are separated by adopting a porous plastic plate; sanitary wastewater in a raw water tank enters the bottom part of the filter column through a water inlet by utilizing a peristaltic pump, and is fed from bottom to top, and sewage enters the filter column so as to be biologically cleaned by microorganisms loaded on the surface of a multilevel filter material, filtered layer by layer through filter materials of the oyster-shells and the ceramsite, and deeply treated step by step; meanwhile, an aeration pump adopts a continuous aeration manner, so that the filter column is ensured to be an aerobiotic filter column, and the cleaned water directly overflows to discharge through a water outlet of the filter column. The multilevel distributed oyster-shell ceramsite biologic filter column wastewater treatment process and the device provided by the invention mainly aim to solve the problem of low removal rate of nutrients such as nitrogen and phosphorus in sewage, and the removal efficiency can be improved through optimizing a conventional process and a conventional device.
Description
Technical field
The present invention relates to environmental project technical field of sewage, more particularly to a kind of multilevel distributed oyster shell haydite
Biologic filter sewage treatment process and device.
Background technology
With the increase of wastewater emission amount, chemical fertilizer, synthetic detergent and agricultural chemicals are widely used, nutrients in water body
Matter concentration is constantly raised, and nitrogen, phosphorus are the one of the main reasons for causing body eutrophication, and body eutrophication enjoys people to close
Note.In recent years, tightened up standard, conventional biochemical treatment work have been formulated in discharge of the Chinese government to water quality index in all kinds of sewage
Skill can effectively reduce the BOD of sewage5And SS, but can only remove 10% to the nutrients such as simultaneous N and P in sewage~
20%, a large amount of phosphorus-containing wastewaters are directly discharged into water body, it is therefore desirable to more stable, economic, efficient denitrogenation dephosphorizing operation process.
In biological denitrification process nitration reaction be under aerobic conditions by mineralized nitrogen for nitric nitrogen process.It includes
Two reactions steps：(1) nitrosation reaction, ammonia nitrogen is oxidized to nitrite nitrogen first under Nitrosomas effect；(2) nitrify anti-
Should, nitrite nitrogen is further oxidized to nitric nitrogen under Nitromonas effect；Its reaction equation is as follows：
NH4 ++1.5O2→NO2 -+2H++H2O
NO2 -+1.5O2→NO3 -
Biological phosphate-eliminating is typically to absorb Ruminants animal itself nucleic acid and ATP using polyP bacteria is a large amount of when aerobic, while
Reversible concentration gradient excessively inhales the polyphosphoric acids salt particle of phosphorus synthesis energy storage in internal, so as to reach the purpose of dephosphorization.
Chemical dephosphorization is with deliquescent phosphorus (phosphoric acid in sewage to the artificial dephosphorization reagent (slaine medicament) that adds in sewage
Salt) mixing after, formed graininess, the indissoluble sediment of non-solubility and from water separate out process.
Lime dephosphorization reaction equation such as formula (1), (2)：
Main reaction：Ca(OH)2+HCO3 -—→CaCO3↓+OH-+H2O (1)
Side reaction：5Ca2++3PO4 3-+OH-—→Ca5(OH)(PO4)3↓ (2)
Wherein, main reaction is occupied an leading position in lime dephosphorization, and it determines the lime that waste water softens and dealkalize is consumed
Amount, meanwhile, the calcium carbonate of main reaction generation can be used as weighting agent, the calcium phosphate precipitation for contributing to side reaction to generate.And Ca (OH)2
There is good cohesion suction-operated as coagulant.
But, because nitration reaction needs to consume substantial amounts of basicity, when ammonia nitrogen in sewage load is too high, basicity is not enough will
Cause the pH value of mixed liquor in device to be down to less than 6.5, deviate the optimum pH of nitrobacteria growth metabolism, show as nitrification activity
Reduce, nitration reaction speed declines.
The content of the invention
The invention provides a kind of multilevel distributed filter of oyster shell ceramic aggregate biological post sewage treatment process and device, it overcomes
Weak point existing for the multilevel distributed oyster shell ceramic aggregate biological filter post sewage treatment process and device of prior art, pin
It is low to there is the nutrient removal rate such as nitrogen and phosphorus in sewage, by the optimization to common process and device, effectively improve
Its removal efficiency.
The technical solution adopted for the present invention to solve the technical problems is：A kind of multilevel distributed oyster shell ceramic aggregate biological filter
Post sewage treatment process, comprises the following steps：
S1. filter column bottom supporting layer on by filtrate press oyster shell and haydite with volume ratio be 1:2.5~3.5 ratio
Alternately filling is distributed in filter post layered multi-stage upwards successively, the oyster shell and haydite area load microorganism, with such ratio
Example distribution, the CaCO that oyster shell contains3, it can be ensured that pH stabilizations maintain the growth of microorganism 6.8 or so；
S2. make sewage in the raw water groove bottom for entering filter post from bottom to top using peristaltic pump, ensure during water inlet
Sewage it is uniform；
S3. sewage is by multistage filtrate oyster shell and biological cleaning and oyster shell and the pottery of haydite area load microorganism
The filter material layer filtering of granulosa, in-depth treatment sewage, is purified water step by step.
As preferred, it is spaced apart using cellular-plastic panels between the oyster shell and haydite.
Used as preferred, the particle diameter of the oyster shell and haydite is respectively 3~5mm.
Used as preferred, preferably 4~6 grades of the filtrate layering, the classification is caused along journey treatment effect with height
Increase and improve, and effluent quality has basically reached stabilization at 4~6 grades, series is higher, and treatment effect more preferably, but is considered
The limited height of post is filtered, is advisable with 4~6 grades.
Used as preferred, the supporting layer is provided with filler, and filler is gravel, and the granularity of the gravel is 5~10mm.
A kind of multilevel distributed oyster shell ceramic aggregate biological filter post sewage-treatment plant that the present invention is provided, including raw water groove,
Filter post, supporting plate, air inlet pipe, aeration pump, peristaltic pump and cellular-plastic panels；Polylith cellular-plastic panels are separately mounted to filter the chamber of post
It is interior and by filter post inner chamber be divided into multilayer；Supporting plate is fixed on the bottom of filter post, and gravel is inserted on supporting plate is held with being formed
Support layer；Entery and delivery port is respectively equipped with the bottom and top of filter post；Filter post in, by polylith cellular-plastic panels be divided into it is many
In layer, oyster shell and haydite are alternately filled from bottom to top；The oyster shell and haydite with volume ratio be 1:2.5~3.5 ratio
Distribution, the oyster shell and haydite area load microorganism；The granularity of the gravel is 5~10mm, and supporting layer packed height is 100
~300mm；The raw water groove is connected by peristaltic pump with the water inlet of filter post, and the aeration pump is connected to the bottom of filter post
At air inlet.
As preferred, the water inlet at the 50~150mm of top of supporting plate, and by flexible pipe and the wriggling
Pump is connected.
Used as preferred, the delivery port is located at 1600~1800mm of supporting plate height.
Used as preferred, the aperture on the cellular-plastic panels is arranged in round form, and aperture is 1~3mm, hole
It is 2~4mm.
Prior art is compared to, the invention has the advantages that：
1. using the filter interior oyster shell of post and the biologic filter of haydite layered multi-stage distribution, filler is spaced the present invention in proportion
Alternately fill, and area load microorganism carries out biological cleaning to sewage, step by step in-depth treatment sewage, ammonia nitrogen and total phosphorus etc. go
Except rate is improved with the increase of level, the biologic filter being distributed with oyster shell and haydite layered multi-stage can not only be follow-up
The nitration reaction stage provides sufficient basicity, and substantially increases the nitrification efficiency that aeration and biological filters post.
2. the present invention uses oyster shell and haydite as filler, because of the coarse many micropores of haydite layer surface, with very big table
Area, promotes absorption of the haydite to polluter in sanitary sewage；And oyster shell contains abundant CaCO3, pH can be adjusted
Stabilization maintains the growth of microorganism 6.8 or so, and the continuous dissolution of ingredients calcium carbonate in acidization can be by the phosphorus in sewage
Hydrochlorate is removed by chemical dephosphorization mode, and with the distributed filling filler of this layered multi-stage, various water quality index can be with layer
Level increase and improve.
3. multilevel distributed oyster shell ceramic aggregate biological of the invention filters post sewage treatment process and device, and simple structure is removed
Phosphorus effect is good, filter post water outlet maintains the pH value range of stabilization, and aeration pump makes in filter post that gas-liquid mixed is more uniform, passes through
Filter material layer oxygen utilization rate increases substantially, without excess sludge, do not cause the low, convenient management of secondary pollution, operating cost etc. excellent
Point, while realizing the recycling of discarded oyster shell.
The present invention is described in further detail below in conjunction with drawings and Examples；But one kind of the invention is multilevel distributed
Oyster shell ceramic aggregate biological filters post sewage treatment process and device is not limited to embodiment.
Brief description of the drawings
Fig. 1 is sewage-treatment plant structural representation of the invention；
Fig. 2 is filter post agent structure schematic diagram of the invention；
Fig. 3 is cellular-plastic panels top view of the invention；
Fig. 4 be pH treatment effects of the invention and uniform mixed biologic filter post effect compare figure；When wherein abscissa is
Between/d, ordinate is pH value；
Fig. 5 be total phosphorus treatment effect of the invention and uniform mixed biologic filter post effect compare figure；Wherein abscissa is
Time/d, ordinate is total phosphorus concentration/mgL-1；
Fig. 6 be NH_3-N treating effect of the invention and uniform mixed biologic filter post effect compare figure；Wherein abscissa is
Time/d, ordinate is ammonia nitrogen concentration/mgL-1；
Fig. 7 be COD treatment effects of the invention and uniform mixed biologic filter post effect compare figure；When wherein abscissa is
Between/d, ordinate is COD concentration/mgL-1；
Fig. 8 is dephosphorization of the invention, ammonia nitrogen, aniline and dyestuff along journey treatment effect figure；Wherein abscissa is high along journey
Degree/mm, ordinate is the concentration/mgL of each composition-1。
Specific embodiment
Embodiment, refers to shown in Fig. 1-3, at a kind of multilevel distributed oyster shell ceramic aggregate biological filter post sewage of the invention
Science and engineering skill, comprises the following steps：
S1. on the supporting layer of filter post 1 bottom by filtrate press oyster shell 3 and haydite 2 with volume ratio be 1:3 it is proportional layered
Filling is distributed in filter post 1 multi-stage alternate upwards successively, the oyster shell 3 and the area load microorganism of haydite 2；
S2. make sewage in raw water groove 7 bottom for entering filter post 1 from bottom to top using peristaltic pump 9, protected during water inlet
Demonstrate,prove the uniform of sewage；
S3. sewage is by multistage filtrate oyster shell 3 and biological cleaning and the oyster shell 3 of the area load microorganism of haydite 2
With 2 layers of filter material layer filtering of haydite, in-depth treatment sewage, is purified water step by step.
Biofilm processing stage is set before the step S1, and the operating method of the biofilm processing stage is：Oyster will be taken from
The oyster shell of cultivation factory or marine products garbage reclamation station is dried after being rinsed through water, broken, mistake after calcining a hour at 400 DEG C
Sieve；Oyster shell 3 and haydite 2 with volume ratio be 1:Filling is distributed in filter post 13 proportional layered multi-stage alternate upwards successively, will
Seed sludge enters in filter post 1 with water inlet, and the seed sludge takes from the aeration tank of municipal sewage plant, and vexed exposure is opened after 2 days
Begin continuous water flowing；When ammonia nitrogen and total phosphorus and other water quality index clearances reach stabilization in filter post 1 (about 1~2 week), i.e.,
Biofilm treatment is completed, oyster shell 3 and haydite 2 for being filled in inside filter post is obtained.
It is spaced apart using cellular-plastic panels 11 between the oyster shell 3 and haydite 2；The grain of the oyster shell 3 and haydite 2
Footpath is respectively 3~5mm；The filtrate layered multi-stage is 5 grades；The supporting layer is provided with filler, and filler is gravel 5, the gravel 5
Granularity is 5~10mm.
In the present embodiment, a kind of multilevel distributed oyster shell ceramic aggregate biological filter post sewage-treatment plant, including raw water groove 7,
Filter post 1, supporting plate 13, air inlet pipe 6, aeration pump 10, peristaltic pump 9 and cellular-plastic panels 11；Present apparatus filter post 1 main body is using organic
Pvc pipe is processed, and size is D70mm × 1700mm, and polylith cellular-plastic panels 11 are separately mounted in the chamber of filter post 1 and will filter
The inner chamber of post 1 is divided into multilayer；Supporting plate 13 is fixed on the bottom of filter post 1, and gravel 5 is inserted on supporting plate 13 to form support
Layer；Water inlet 4, delivery port 12 are respectively equipped with the bottom and top of filter post；In filter post 1, by the institute of polylith cellular-plastic panels 11
In the multilayer being divided into, oyster shell 3 and haydite 2 are alternately filled from bottom to top；The oyster shell 3 and haydite 2 with volume ratio be 1:3
Ratio distribution, the oyster shell 3 and the area load microorganism of haydite 2；The granularity of the gravel 5 is 5~10mm, and supporting layer filling is high
It is 150mm to spend；The raw water groove 7 is connected through peristaltic pump 9 by flexible pipe 14 with the water inlet 4 of filter post 1, and the aeration pump 10 leads to
Tubule 15 is crossed to be connected at the air inlet 6 of the bottom of filter post 1.
In the present embodiment, the water inlet 4 is at the top 100mm of supporting plate 13 and compacted with described by flexible pipe 16
Dynamic pump 9 is connected；The delivery port 12 is located at the height 1600mm of supporting plate 13, for the sewage after treatment, i.e. gained
The purified water outflow arrived；；The air inlet 6 is located at supporting layer and at the 100mm of supporting plate 13, in air inlet 6 and aeration
Flowmeter 8 is also set up between pump 10, the oxygen-supplying amount for detecting aeration pump 10, and the aeration pump 10 is using continuous aeration
Mode, it is ensured that filter post 1 preferably supports filter post；The dissolved oxygen that post 1 will be filtered is controlled between 3~4.5mg/L；The cellular-plastic panels 11
On aperture 1101 with round form arrange, and aperture be 1~3mm, hole be 2~4mm.
The course of work of the invention：Sanitary wastewater in raw water groove 7 enters in the presence of peristaltic pump 9 through water inlet 4 to be filtered
The bottom of post 1, is intake from bottom to top, it is ensured that sewage is uniform, and about 1500mm 5 grades of distributions of layering high are filled in the filter main body of post 1
Oyster shell 3 and the filler of haydite 2 and the filler superficial growth nitrobacteria with a small amount of denitrifying phosphorus removing bacteria；When need dirt to be processed
After water enters filter post 1, mineralized nitrogen is nitrite and nitrate by the nitrobacteria on filler surface, and denitrifying bacteria will filter post
Interior nitrate nitrogen and nitrite nitrogen changes into nitrogen, and is expelled directly out from the top of filter post 1, while during denitrifying phosphorus removing bacteria will intake
Portion phosphate absorb, the phosphate of the dissolution calcium ion of oyster shell 3 residual forms sediment.Meanwhile, aeration pump 10 is used
The mode of continuous aeration, to ensure filter post 1 for aerobic filter post, the water obtained after purification is arranged by the direct overflow of filter post delivery port 12
Go out.
Experiments verify that, the present invention multilevel distributed oyster shell ceramic aggregate biological filter post sewage-treatment plant used is fitted very much
Close waste water of the treatment containing ammonia nitrogen and phosphorus.Referring to Fig. 4~7, inlet flow-patterm is given at for 4.71, total phosphorus concentration is 2.52mg/L, ammonia nitrogen
Concentration is that 80mg/L, COD concentration are multilevel distributed biologic filter and two kinds under the conditions of 600mg/L, total nitrogen are 81.83mg/L
The mixed uniformly mixed bed biologic filter of filtrate runs parallel comparison diagram.As seen from the figure, two kinds of pH of filter post can stablize 6.5
Between~7.0, the normal growth of microorganism can be maintained；Uniform mixing filter post total phosphorus average removal rate is 58.3%, multilevel hierarchy
The average removal rate for filtering post total phosphorus reaches 81.72%；The ammonia nitrogen and COD removal effects of uniform mixing and multistage distribution filter post are very
Good, two kinds of ammonia nitrogen removal franks of filter post exceed to 99%, COD clearances more than 90%.It follows that layering of the invention is more
The level distribution filter oyster shell of post 1 is more concentrated than the oyster shell distribution of uniform mixing filter post, CaCO in oyster shell 33In solutions of weak acidity
It is lower to dissolve, multistage distribution is concentrated, chemical dephosphorization is more abundant in filter post 1, and phosphor-removing effect is substantially better, illustrates oyster shell 3
It is layered with haydite 2 and is more beneficial for dephosphorization every filling；Also, treatment of the present invention to sewage has total phosphorus and ammonia nitrogen removal higher
Efficiency, the biologic filter being distributed with oyster shell 3 and the layered multi-stage of haydite 2 can not only fill for the follow-up nitration reaction stage provides
The basicity of foot, makes the water outlet of filter post 1 maintain the pH value range of stabilization, and aeration pump 10 makes gas-liquid mixed in filter post 1 more equal
It is even, increased substantially by filter material layer oxygen utilization rate, the nitrification efficiency that aeration and biological filters post is substantially increased, significantly carry
The removal effect of the main water quality index such as total phosphorus in sanitary wastewater high.
Meanwhile, referring to Fig. 8, in the present embodiment, the filtrate layering is preferably 5 grades, and the classification is caused along journey treatment effect
As the increase of height makes effluent quality basically reach stabilization, with the increase along Cheng Gaodu, total phosphorus, ammonia nitrogen in sewage, benzene
Amine and dye component are gradually reduced by initial concentration 2.52mg/L, 80mg/L, 20mg/L and 10mg/L, are finally reached along Cheng Gaodu
During 1600mm, the concentration of four kinds of compositions goes to zero, therefore the present invention can effectively remove total phosphorus, ammonia nitrogen, the aniline contained in sewage
And dye component.
Above-described embodiment is only used for further illustrating a kind of multilevel distributed oyster shell ceramic aggregate biological filter post dirt of the invention
Water treatment technology and device, but the invention is not limited in embodiment, it is every to implement to more than according to technical spirit of the invention
Any simple modification, equivalent variations and modification that example is made, each fall within the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of multilevel distributed oyster shell ceramic aggregate biological filters post sewage treatment process, it is characterised in that comprise the following steps：
S1. filter column bottom supporting layer on by filtrate press oyster shell and haydite with volume ratio be 1:2.5~3.5 it is proportional layered
Filling is distributed in filter post multi-stage alternate upwards successively, the oyster shell and haydite area load microorganism；
S2. the sewage in raw water groove is entered the bottom of filter post from bottom to top using peristaltic pump, sewage is ensured during water inlet
Uniformly；
S3. sewage is by the biological cleaning of multistage filtrate oyster shell and haydite area load microorganism and oyster shell and haydite layer
Filter material layer filtering, step by step in-depth treatment sewage, be purified water.
2. a kind of multilevel distributed oyster shell ceramic aggregate biological according to claim 1 filters post sewage treatment process, its feature
It is to be spaced apart using cellular-plastic panels between the oyster shell and haydite.
3. a kind of multilevel distributed oyster shell ceramic aggregate biological according to claim 1 filters post sewage treatment process, its feature
It is that the particle diameter of the oyster shell and haydite is respectively 3~5mm.
4. a kind of multilevel distributed oyster shell ceramic aggregate biological according to claim 1 filters post sewage treatment process, its feature
It is that the filtrate is layered as 4~6 grades.
5. a kind of multilevel distributed oyster shell ceramic aggregate biological according to claim 1 filters post sewage treatment process, its feature
It is that the supporting layer is provided with filler, filler is gravel, and the granularity of the gravel is 5~10mm.
6. a kind of multilevel distributed oyster shell ceramic aggregate biological filters post sewage-treatment plant, it is characterised in that including raw water groove, filter
Post, supporting plate, air inlet pipe, aeration pump, peristaltic pump and cellular-plastic panels；Polylith cellular-plastic panels are separately mounted in the chamber of filter post
And the inner chamber for filtering post is divided into multilayer；Supporting plate is fixed on the bottom of filter post, and gravel is inserted on supporting plate to form support
Layer；Entery and delivery port is respectively equipped with the bottom and top of filter post；In filter post, the multilayer being divided into by polylith cellular-plastic panels
In, oyster shell and haydite are alternately filled from bottom to top；The oyster shell and haydite with volume ratio be 1:2.5~3.5 ratio point
Cloth, the oyster shell and haydite area load microorganism；The granularity of the gravel be 5~10mm, supporting layer packed height be 100~
300mm；The raw water groove is connected by peristaltic pump with the water inlet of filter post, and the aeration pump is connected to entering for the bottom of filter post
At gas port.
7. a kind of multilevel distributed oyster shell ceramic aggregate biological according to claim 6 filters post sewage-treatment plant, its feature
It is that the water inlet is connected by flexible pipe at the 50~150mm of top of supporting plate with the peristaltic pump.
8. a kind of multilevel distributed oyster shell ceramic aggregate biological according to claim 6 filters post sewage-treatment plant, its feature
It is that the delivery port is located at 1600~1800mm of supporting plate height.
9. a kind of multilevel distributed oyster shell ceramic aggregate biological according to claim 6 filters post sewage-treatment plant, its feature
It is that the air inlet is located at supporting layer and at 50~150mm of supporting plate, and stream is also set up between air inlet and aeration pump
Gauge, the oxygen-supplying amount for detecting aeration pump.
10. a kind of multilevel distributed oyster shell ceramic aggregate biological according to claim 6 filters post sewage-treatment plant, its feature
It is that the aperture on the cellular-plastic panels is arranged in round form, and aperture is 1~3mm, hole is 2~4mm.
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| CN108928909A (en) * | 2018-08-07 | 2018-12-04 | 厦门大学 | A kind of starting method handling ammonia-containing water biofilter with high salt |
| CN113072249A (en) * | 2021-03-26 | 2021-07-06 | 广东四用科技有限公司 | Excrement and urine treatment system using composite material to load microorganisms and mobile toilet using same |
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