CN106311161A - Efficient treatment method of phosphorus wastewater - Google Patents
Efficient treatment method of phosphorus wastewater Download PDFInfo
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- CN106311161A CN106311161A CN201610841889.5A CN201610841889A CN106311161A CN 106311161 A CN106311161 A CN 106311161A CN 201610841889 A CN201610841889 A CN 201610841889A CN 106311161 A CN106311161 A CN 106311161A
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- phosphorus
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- wastewater
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- containing wastewater
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- 238000000034 method Methods 0.000 title claims abstract description 75
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 54
- 239000011574 phosphorus Substances 0.000 title claims abstract description 54
- 239000002351 wastewater Substances 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000001913 cellulose Substances 0.000 claims abstract description 37
- 229920002678 cellulose Polymers 0.000 claims abstract description 37
- 238000001179 sorption measurement Methods 0.000 claims abstract description 37
- 238000004062 sedimentation Methods 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 239000000701 coagulant Substances 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000012528 membrane Substances 0.000 claims abstract description 10
- 238000001471 micro-filtration Methods 0.000 claims abstract description 10
- 230000001954 sterilising effect Effects 0.000 claims abstract description 9
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 39
- 239000003463 adsorbent Substances 0.000 claims description 22
- LDHBWEYLDHLIBQ-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide;hydrate Chemical compound O.[OH-].[O-2].[Fe+3] LDHBWEYLDHLIBQ-UHFFFAOYSA-M 0.000 claims description 22
- 239000000725 suspension Substances 0.000 claims description 20
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 16
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 15
- 239000000706 filtrate Substances 0.000 claims description 14
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methyl-cyclopentane Natural products CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 claims description 14
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 11
- 239000003153 chemical reaction reagent Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 8
- 239000002244 precipitate Substances 0.000 claims description 8
- 239000006228 supernatant Substances 0.000 claims description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 241001330002 Bambuseae Species 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 150000002505 iron Chemical class 0.000 claims description 7
- 238000005374 membrane filtration Methods 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 7
- 238000004069 wastewater sedimentation Methods 0.000 claims description 7
- 239000012153 distilled water Substances 0.000 claims description 6
- 229910000358 iron sulfate Inorganic materials 0.000 claims description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 229920002301 cellulose acetate Polymers 0.000 claims description 2
- 239000002121 nanofiber Substances 0.000 claims description 2
- 229920002492 poly(sulfone) Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 229920006393 polyether sulfone Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 239000004743 Polypropylene Substances 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 125000001309 chloro group Chemical group Cl* 0.000 claims 1
- 230000008014 freezing Effects 0.000 claims 1
- 238000007710 freezing Methods 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims 1
- 229910001948 sodium oxide Inorganic materials 0.000 claims 1
- 238000000746 purification Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract 3
- 238000005660 chlorination reaction Methods 0.000 abstract 1
- 229960004887 ferric hydroxide Drugs 0.000 abstract 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 14
- 238000001556 precipitation Methods 0.000 description 8
- 229910019142 PO4 Inorganic materials 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 7
- 239000010452 phosphate Substances 0.000 description 7
- 239000002689 soil Substances 0.000 description 6
- 238000004108 freeze drying Methods 0.000 description 5
- 238000011953 bioanalysis Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 239000010828 animal waste Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 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
- 238000009388 chemical precipitation Methods 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 229940085991 phosphate ion Drugs 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(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
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses an efficient treatment method of phosphorus wastewater. The method comprises the following steps that the phosphorus wastewater is injected into a primary sedimentation pool; then, a coagulant is added into the wastewater; the stirring is performed for 10 to 20 min; still standing sedimentation is performed for 1 to 3h; supernate obtained after the sedimentation of the wastewater in the primary sedimentation pool is filtered through a micro-filtration membrane; the water subjected to micro-filtration is injected into a phosphorus removal adsorption pool; the structure of the phosphorus removal adsorption pool is identical to a filtering pool; a ferric hydroxide modified nanometer cellulose phosphorus removing agent is used as a filtering material; water after the absorption treatment is fed into a sterilization pool; fast mixing method chlorination sterilization is performed; then, sedimentation is performed for 0.5 to 3h; fine filtering is performed to obtain the treated and recovered purification water. The method can be used for effectively removing the phosphorus in the wastewater; the influence of the phosphorus removing adsorption agent during the adsorption treatment by the pH of the wastewater is small; no secondary pollution is caused on the water body; the treatment cost is low.
Description
Technical field:
The present invention relates to waste water treatment field, be specifically related to the high-efficient treatment method of a kind of phosphorus-containing wastewater.
Background technology:
The waste water of the holophytic nutrition materials such as the most nitrogenous and phosphorus enters surface water body, brings serious eutrophication and asks
Topic, wherein phosphorus is much larger than nitrogen to the impact of algal grown.Phosphorus is again indispensable important element in vital movement simultaneously, is one
Plant important natural resources that is non-renewable and that face exhaustion.In recent years, the western developed country sustainable use height to phosphorus
Pay attention to, from sewage and animal wastes, reclaim phosphorus have become as heat subject on the ground such as West Europe, Japan.Both phosphorus had been reclaimed from waste water
Can solve the problem that phosphorus pollution problem, be again the sustainable use realizing phosphor resource simultaneously, therefore, waste water dephosphorization and phosphorus reclaim research and are
The important scientific issues that Current resource environmental area faces, receives extensive concern.
Normally used phosphorus removing method mainly includes chemical method and bioanalysis.Bioanalysis dephosphorization is based on biting phosphorus bacterium aerobic
And under anaerobic condition, absorb and discharge the principle of phosphorus, realize dephosphorization by the alternate run of Aerobic-anaerobic.Bioanalysis dephosphorization
Technique has been rapidly developed since 20 century 70s, and the Appropriate application of original waste water biochemical treatment equipment (be need not by it
The most extra equipment investment), and can complete organic removal, the advantage such as relatively low operating cost obtains consistent. simultaneously
Approval.The method under suitable conditions, can remove the phosphorus of up to 90% in waste water.But in general, bioanalysis dephosphorization
Process runs well is poor, runs operation strict, is affected greatly by the temperature acid-base value etc. of waste water, to organic concentration in waste water
(BOD) dependency is very strong, when in waste water, content of organics is relatively low, or phosphorus content more than 10mg/L time, water outlet is difficult to meet phosphorus
Discharge standard, therefore, generally requires and water outlet carries out secondary dephosphorization process.
Chemical method dephosphorization refers mainly to apply the metal ion of the generations such as iron salt, aluminium salt and Calx to generate indissoluble phosphorus with phosphate radical
The sedimentary method of hydrochlorate removes the phosphorus in waste water.This method technique is simple, reliable, and it is total to reach higher water outlet
Phosphorus requirement.But this process is the reaction of precipitation-dissolution equilibrium.On the one hand, the basicity in waste water causes part metals hydroxide
Precipitation, consumes a part of amount of medicament；On the other hand, for reaching relatively low phosphate ion concentration, it is necessary to keep gold higher in waste water
Belong to ion concentration.Due to microscopic precipitate granule quasi-equilibrium phenomenon, cause apparent solubilty to amass and be much higher than true solubility product, in order to reach
To the formation condition of calcium phosphate precipitation, need the precipitation by metallic ion agent concentration added commonly greater than normal solubility product 1-2 number
Magnitude, therefore, medicament is costly；Thereby result in remaining metal ions concentration (such as iron ion) the highest, make effluent color dilution increase
Adding, the concentration of metal ions exceeded standard also may can produce chronic toxic action to biology；The chemical sludge that chemical precipitation produces contains
The water yield is big, dehydration difficulty, it is difficult to process, easily produce secondary pollution.
Both the above method is respectively arranged with pluses and minuses, and all can not carry out phosphorus recovery.And absorption method dephosphorization is the most more
Mend the deficiency of above method.Absorption method is as a kind of efficient low-consume method removing specific solute from low concentration solution, special
The not removal of harmful substance be applicable to waste water.Utilize absorption-desorption method, can reach and eliminate phosphorus pollution and reclaim phosphor resource
Dual purpose.But current adsorbent amount is few, when dephosphorization, addition is big, adds cost.
Summary of the invention:
It is an object of the invention to provide the high-efficient treatment method of a kind of phosphorus-containing wastewater, the method phosphor-removing effect is good, by waste water
PH impact is little, and the adsorbent amount used during adsorption treatment is big, has saved cost, to water body non-secondary pollution, simple to operate.
For achieving the above object, the present invention is by the following technical solutions:
The high-efficient treatment method of a kind of phosphorus-containing wastewater, comprises the following steps:
(1) phosphorus-containing wastewater is injected preliminary sedimentation tank, then dosing coagulant in waste water, stir 10-20min, staticly settle
1-3h；
(2) supernatant after preliminary sedimentation tank wastewater sedimentation passes through micro-filtrate membrane filtration, and the water after microfiltration is injected into dephosphorization adsorption tank
In, the structure of dephosphorization adsorption tank is identical with filter tank, uses hydrated ferric oxide. modified nanometer cellulose dephosphorization adsorbent as filtrate, inhales
Water after attached process sends into sterilization pool, through quick mixing method cholorination, then precipitates 0.5-3h, fine straining, obtains processing back
The purification water received；
Wherein, in step (2), the preparation method of hydrated ferric oxide. modified nanometer cellulose is: metal iron salt is joined nanometer
In the aaerosol solution of cellulose, being added dropwise over sodium hydroxide solution, under room temperature, mix and blend reaction 3-6h, cold with freeze drier
It is stored in room temperature after the dry 30-50h of lyophilizing, obtains hydrated ferric oxide. modified nanometer cellulose.
Preferred as technique scheme, in step (1), described coagulant is polyacrylamide, aluminum chloride, iron chloride
Mixture, three's mass ratio is: (0.35-0.88): 1:1.
Preferred as technique scheme, in step (1), the dosage of described coagulant is 1-1.5mg/L.
Preferred as technique scheme, in step (2), described micro-filtration membrane be polyethylene film, polychloroethylene film, poly-third
One in alkene film, polysulfone membrane, poly (ether sulfone) film, polycarbonate membrane, cellulose acetate membrane.
Preferred as technique scheme, in step (2), in dephosphorization adsorption tank, adsorbent layer thickness is 0.5-0.8m, inhales
In attached pond, hydraulic load is 5-10m/h, and air-land combat is 30-60min.
Preferred as technique scheme, described metal iron salt is the one in iron chloride, iron sulfate, ferric nitrate or many
Plant mixing.
Preferred as technique scheme, described metal iron salt is 1:(1-5 with the mol ratio of sodium hydroxide).
Preferred as technique scheme, the preparation method of described nano-cellulose comprises the following steps:
A () is scattered in deionized water after being pulverized by dry bamboo paper, add TEMPO reagent and sodium bromide, and stirring is mixed
Close 20-50min, be subsequently adding sodium hypochlorite and aoxidize, the pH to 9-11 of regulation suspension, then removes unnecessary TEMPO
Reagent；
B () carries out supersound process 1-2h to the suspension that step (a) is prepared under 800-1500W power, then with distillation
It is 0.5wt% that water is diluted to concentration, and then under 20000rpm, homogenizing processes 1-3h, obtains nano-cellulose.
Preferred as technique scheme, in step (a), the solid-to-liquid ratio of described suspension is 1:(80-100).
Compared with prior art, the invention have the advantages that
The method that the present invention uses coagulating sedimentation, absorption method, membrane separating to combine is imitated to the phosphorus removing in waste water, dephosphorization
The best, during coagulating sedimentation, the present invention use iron chloride, aluminum chloride, polyacrylamide as coagulant, and conservative control three it
Between content, three is the most collaborative, has splendid phosphor-removing effect；
On the other hand, during adsorption and dephosphorization, employing hydrated ferric oxide. modified nanometer cellulose is as dephosphorization adsorbent, its
Adsorbance is big, and range is wide, is affected little by pH and the interfering ion of waste water, and may be used for soil enrichment after Phosphate Sorption, just
Making full use of in phosphorus, cost-effective；The phosphorus removing method that the present invention provides, simple to operate, to water body non-secondary pollution, cost
Low.
Detailed description of the invention:
In order to be better understood from the present invention, below by embodiment, the present invention is further described, and embodiment is served only for solving
Release the present invention, the present invention will not be constituted any restriction.
Embodiment 1
The high-efficient treatment method of a kind of phosphorus-containing wastewater, comprises the following steps:
(1) preparation of dephosphorization adsorbent
A () is scattered in deionized water after being pulverized by dry bamboo paper, add TEMPO reagent and sodium bromide, and stirring is mixed
Close 20min, be subsequently adding sodium hypochlorite and aoxidize, the pH to 9-11 of regulation suspension, then removes unnecessary TEMPO examination
Agent, wherein in suspension, solid-to-liquid ratio is 1:80；
B () carries out supersound process 1h to the suspension that step (a) is prepared under 800W power, then with distilled water diluting extremely
Concentration is 0.5wt%, and then under 20000rpm, homogenizing processes 1h, obtains nano-cellulose；
C iron chloride is joined in the aaerosol solution of nano-cellulose by (), be added dropwise over sodium hydroxide solution, mixed under room temperature
Close stirring reaction 3h, after freeze drier lyophilization 30h, be stored in room temperature, obtain hydrated ferric oxide. modified nanometer cellulose,
Wherein, described iron chloride is 1:1 with the mol ratio of sodium hydroxide；
(2) phosphorus-containing wastewater is injected preliminary sedimentation tank, in waste water, then add the coagulant of 1mg/L, stir 10min, stand
Precipitation 1h, wherein, described coagulant is the mixture of polyacrylamide, aluminum chloride, iron chloride, and three's mass ratio is: 0.35:1:
1；
(3) supernatant after preliminary sedimentation tank wastewater sedimentation passes through micro-filtrate membrane filtration, and the water after microfiltration is injected into dephosphorization adsorption tank
In, the structure of dephosphorization adsorption tank is identical with filter tank, uses above-mentioned prepared hydrated ferric oxide. modified nanometer cellulose dephosphorization adsorbent
As filtrate, adsorbent layer thickness is 0.5m, and in adsorption tank, hydraulic load is 5m/h, and air-land combat is 60min, adsorption treatment
After water send into sterilization pool, through quick mixing method cholorination, then precipitate 0.5h, fine straining, obtain process reclaim purification
Water；Hydrated ferric oxide. modified nanometer cellulose after Phosphate Sorption can be used for soil enrichment.
Embodiment 2
(1) preparation of dephosphorization adsorbent
A () is scattered in deionized water after being pulverized by dry bamboo paper, add TEMPO reagent and sodium bromide, and stirring is mixed
Close 50min, be subsequently adding sodium hypochlorite and aoxidize, the pH to 9-11 of regulation suspension, then removes unnecessary TEMPO examination
Agent, wherein in suspension, solid-to-liquid ratio is 1:100；
B () carries out supersound process 2h to the suspension that step (a) is prepared under 1500W power, then use distilled water diluting
Being 0.5wt% to concentration, then under 20000rpm, homogenizing processes 3h, obtains nano-cellulose；
C iron sulfate is joined in the aaerosol solution of nano-cellulose by (), be added dropwise over sodium hydroxide solution, mixed under room temperature
Close stirring reaction 6h, after freeze drier lyophilization 50h, be stored in room temperature, obtain hydrated ferric oxide. modified nanometer cellulose,
Wherein, described iron sulfate is 1:5 with the mol ratio of sodium hydroxide；
(2) phosphorus-containing wastewater is injected preliminary sedimentation tank, in waste water, then add the coagulant of 1.5mg/L, stir 20min, quiet
Putting precipitation 3h, wherein, described coagulant is the mixture of polyacrylamide, aluminum chloride, iron chloride, and three's mass ratio is: 0.88:
1:1；
(3) supernatant after preliminary sedimentation tank wastewater sedimentation passes through micro-filtrate membrane filtration, and the water after microfiltration is injected into dephosphorization adsorption tank
In, the structure of dephosphorization adsorption tank is identical with filter tank, uses above-mentioned prepared hydrated ferric oxide. modified nanometer cellulose dephosphorization adsorbent
As filtrate, adsorbent layer thickness is 0.8m, and in adsorption tank, hydraulic load is 10m/h, and air-land combat is 30min, at absorption
Water after reason sends into sterilization pool, through quick mixing method cholorination, then precipitates 3h, fine straining, obtains processing the purification reclaimed
Water；Hydrated ferric oxide. modified nanometer cellulose after Phosphate Sorption can be used for soil enrichment.
Embodiment 3
(1) preparation of dephosphorization adsorbent
A () is scattered in deionized water after being pulverized by dry bamboo paper, add TEMPO reagent and sodium bromide, and stirring is mixed
Close 30min, be subsequently adding sodium hypochlorite and aoxidize, the pH to 9-11 of regulation suspension, then removes unnecessary TEMPO examination
Agent, wherein in suspension, solid-to-liquid ratio is 1:85；
B () carries out supersound process 1.2h to the suspension that step (a) is prepared under 1000W power, then dilute with distilled water
Releasing to concentration is 0.5wt%, and then under 20000rpm, homogenizing processes 1.5h, obtains nano-cellulose；
C ferric nitrate is joined in the aaerosol solution of nano-cellulose by (), be added dropwise over sodium hydroxide solution, mixed under room temperature
Close stirring reaction 4h, after freeze drier lyophilization 35h, be stored in room temperature, obtain hydrated ferric oxide. modified nanometer cellulose,
Wherein, described ferric nitrate is 1:2 with the mol ratio of sodium hydroxide；
(2) phosphorus-containing wastewater is injected preliminary sedimentation tank, in waste water, then add the coagulant of 1.2mg/L, stir 15min, quiet
Putting precipitation 1.5h, wherein, described coagulant is the mixture of polyacrylamide, aluminum chloride, iron chloride, and three's mass ratio is:
0.5:1:1；
(3) supernatant after preliminary sedimentation tank wastewater sedimentation passes through micro-filtrate membrane filtration, and the water after microfiltration is injected into dephosphorization adsorption tank
In, the structure of dephosphorization adsorption tank is identical with filter tank, uses above-mentioned prepared hydrated ferric oxide. modified nanometer cellulose dephosphorization adsorbent
As filtrate, adsorbent layer thickness is 0.6m, and in adsorption tank, hydraulic load is 6m/h, and air-land combat is 40min, adsorption treatment
After water send into sterilization pool, through quick mixing method cholorination, then precipitate 1h, fine straining, obtain process reclaim purification water；
Hydrated ferric oxide. modified nanometer cellulose after Phosphate Sorption can be used for soil enrichment.
Embodiment 4
(1) preparation of dephosphorization adsorbent
A () is scattered in deionized water after being pulverized by dry bamboo paper, add TEMPO reagent and sodium bromide, and stirring is mixed
Close 35min, be subsequently adding sodium hypochlorite and aoxidize, the pH to 9-11 of regulation suspension, then removes unnecessary TEMPO examination
Agent, wherein in suspension, solid-to-liquid ratio is 1:90；
B () carries out supersound process 1.5h to the suspension that step (a) is prepared under 1200W power, then dilute with distilled water
Releasing to concentration is 0.5wt%, and then under 20000rpm, homogenizing processes 2h, obtains nano-cellulose；
C iron chloride is joined in the aaerosol solution of nano-cellulose by (), be added dropwise over sodium hydroxide solution, mixed under room temperature
Close stirring reaction 5h, after freeze drier lyophilization 40h, be stored in room temperature, obtain hydrated ferric oxide. modified nanometer cellulose,
Wherein, described iron chloride is 1:3 with the mol ratio of sodium hydroxide；
(2) phosphorus-containing wastewater is injected preliminary sedimentation tank, in waste water, then add the coagulant of 1.3mg/L, stir 15min, quiet
Putting precipitation 1-3h, wherein, described coagulant is the mixture of polyacrylamide, aluminum chloride, iron chloride, and three's mass ratio is:
0.6:1:1；
(3) supernatant after preliminary sedimentation tank wastewater sedimentation passes through micro-filtrate membrane filtration, and the water after microfiltration is injected into dephosphorization adsorption tank
In, the structure of dephosphorization adsorption tank is identical with filter tank, uses above-mentioned prepared hydrated ferric oxide. modified nanometer cellulose dephosphorization adsorbent
As filtrate, adsorbent layer thickness is 0.7m, and in adsorption tank, hydraulic load is 7m/h, and air-land combat is 45min, adsorption treatment
After water send into sterilization pool, through quick mixing method cholorination, then precipitate 2h, fine straining, obtain process reclaim purification water；
Hydrated ferric oxide. modified nanometer cellulose after Phosphate Sorption can be used for soil enrichment.
Embodiment 5
(1) preparation of dephosphorization adsorbent
A () is scattered in deionized water after being pulverized by dry bamboo paper, add TEMPO reagent and sodium bromide, and stirring is mixed
Close 45min, be subsequently adding sodium hypochlorite and aoxidize, the pH to 9-11 of regulation suspension, then removes unnecessary TEMPO examination
Agent, wherein in suspension, solid-to-liquid ratio is 1:95；
B () carries out supersound process 1.8h to the suspension that step (a) is prepared under 1400W power, then dilute with distilled water
Releasing to concentration is 0.5wt%, and then under 20000rpm, homogenizing processes 2.5h, obtains nano-cellulose；
C iron chloride is joined in the aaerosol solution of nano-cellulose by (), be added dropwise over sodium hydroxide solution, mixed under room temperature
Close stirring reaction 5.5h, after freeze drier lyophilization 45h, be stored in room temperature, obtain hydrated ferric oxide. modified nano fiber
Element, wherein, described iron chloride is 1:4 with the mol ratio of sodium hydroxide；
(2) phosphorus-containing wastewater is injected preliminary sedimentation tank, in waste water, then add the coagulant of 1.4mg/L, stir 20min, quiet
Putting precipitation 2.5h, wherein, described coagulant is the mixture of polyacrylamide, aluminum chloride, iron chloride, and three's mass ratio is:
0.75:1:1；
(3) supernatant after preliminary sedimentation tank wastewater sedimentation passes through micro-filtrate membrane filtration, and the water after microfiltration is injected into dephosphorization adsorption tank
In, the structure of dephosphorization adsorption tank is identical with filter tank, uses above-mentioned prepared hydrated ferric oxide. modified nanometer cellulose dephosphorization adsorbent
As filtrate, adsorbent layer thickness is 0.8m, and in adsorption tank, hydraulic load is 8m/h, and air-land combat is 50min, adsorption treatment
After water send into sterilization pool, through quick mixing method cholorination, then precipitate 2.5h, fine straining, obtain process reclaim purification
Water；Hydrated ferric oxide. modified nanometer cellulose after Phosphate Sorption can be used for soil enrichment.
In waste water in above-described embodiment, initial phosphorus concentration is 8mg/L, after treatment the phosphorus concentration in water be 0.1mg/L with
Under, phosphor-removing effect is good.
Claims (9)
1. the high-efficient treatment method of a phosphorus-containing wastewater, it is characterised in that comprise the following steps:
(1) phosphorus-containing wastewater is injected preliminary sedimentation tank, then dosing coagulant in waste water, stir 10-20min, staticly settle 1-3h；
(2) supernatant after preliminary sedimentation tank wastewater sedimentation passes through micro-filtrate membrane filtration, and the water after microfiltration is injected in dephosphorization adsorption tank, removes
The structure of phosphorus adsorption tank is identical with filter tank, and employing hydrated ferric oxide. modified nanometer cellulose dephosphorization adsorbent is as filtrate, at absorption
Water after reason sends into sterilization pool, through quick mixing method cholorination, then precipitates 0.5-3h, fine straining, obtains processing recovery
Purify water；
Wherein, in step (2), the preparation method of hydrated ferric oxide. modified nanometer cellulose is: metal iron salt is joined nanofiber
In the aaerosol solution of element, being added dropwise over sodium hydroxide solution, under room temperature, mix and blend reaction 3-6h, does with freeze drier freezing
It is stored in room temperature after dry 30-50h, obtains hydrated ferric oxide. modified nanometer cellulose.
The high-efficient treatment method of a kind of phosphorus-containing wastewater the most as claimed in claim 1, it is characterised in that: in step (1), described mixed
Solidifying agent is the mixture of polyacrylamide, aluminum chloride, iron chloride, and three's mass ratio is: (0.35-0.88): 1:1.
The high-efficient treatment method of a kind of phosphorus-containing wastewater the most as claimed in claim 1, it is characterised in that: in step (1), described mixed
The dosage of solidifying agent is 1-1.5mg/L.
The high-efficient treatment method of a kind of phosphorus-containing wastewater the most as claimed in claim 1, it is characterised in that: in step (2), described micro-
Filter membrane is in polyethylene film, polychloroethylene film, polypropylene screen, polysulfone membrane, poly (ether sulfone) film, polycarbonate membrane, cellulose acetate membrane
One.
The high-efficient treatment method of a kind of phosphorus-containing wastewater the most as claimed in claim 1, it is characterised in that: in step (2), dephosphorization is inhaled
In attached pond, adsorbent layer thickness is 0.5-0.8m, and in adsorption tank, hydraulic load is 5-10m/h, and air-land combat is 30-60min.
The high-efficient treatment method of a kind of phosphorus-containing wastewater the most as claimed in claim 1, it is characterised in that: described metal iron salt is chlorine
Change one or more mixing in ferrum, iron sulfate, ferric nitrate.
The high-efficient treatment method of a kind of phosphorus-containing wastewater the most as claimed in claim 1, it is characterised in that: described metal iron salt and hydrogen
The mol ratio of sodium oxide is 1:(1-5).
The high-efficient treatment method of a kind of phosphorus-containing wastewater the most as claimed in claim 1, it is characterised in that described nano-cellulose
Preparation method comprises the following steps:
A () is scattered in deionized water after being pulverized by dry bamboo paper, add TEMPO reagent and sodium bromide, stirring mixing 20-
50min, is subsequently adding sodium hypochlorite and aoxidizes, the pH to 9-11 of regulation suspension, then removes unnecessary TEMPO reagent；
B () carries out supersound process 1-2h to the suspension that step (a) is prepared under 800-1500W power, then dilute with distilled water
Releasing to concentration is 0.5wt%, and then under 20000rpm, homogenizing processes 1-3h, obtains nano-cellulose.
The high-efficient treatment method of a kind of phosphorus-containing wastewater the most as claimed in claim 8, it is characterised in that: in step (a), described outstanding
The solid-to-liquid ratio of supernatant liquid is 1:(80-100).
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| CN110280226A (en) * | 2019-06-26 | 2019-09-27 | 江西师范大学 | Water environment dephosphorization material and synthetic method |
| CN110655246A (en) * | 2019-11-18 | 2020-01-07 | 常飞 | Method for reducing and removing phosphate in domestic sewage through sponge iron |
| CN111389374A (en) * | 2020-03-26 | 2020-07-10 | 四川大学 | A kind of modified nanocellulose adsorbent and its preparation method and application |
| CN111453783A (en) * | 2019-11-28 | 2020-07-28 | 哈尔滨理工大学 | A method for treating phosphorus-containing sewage using iron-based composite modified filter material |
| CN113155568A (en) * | 2021-04-20 | 2021-07-23 | 中国地质调查局武汉地质调查中心(中南地质科技创新中心) | Device and method for rapidly extracting phosphate from underground water |
| CN117920150A (en) * | 2024-03-22 | 2024-04-26 | 北京大学 | Cellulose porous nanocomposite and preparation method and application thereof |
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| CN111389374A (en) * | 2020-03-26 | 2020-07-10 | 四川大学 | A kind of modified nanocellulose adsorbent and its preparation method and application |
| CN113155568A (en) * | 2021-04-20 | 2021-07-23 | 中国地质调查局武汉地质调查中心(中南地质科技创新中心) | Device and method for rapidly extracting phosphate from underground water |
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