CN109293083A - Acid washing phosphorization wastewater treatment method and system - Google Patents
Acid washing phosphorization wastewater treatment method and system Download PDFInfo
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- CN109293083A CN109293083A CN201811523789.3A CN201811523789A CN109293083A CN 109293083 A CN109293083 A CN 109293083A CN 201811523789 A CN201811523789 A CN 201811523789A CN 109293083 A CN109293083 A CN 109293083A
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- 239000002253 acid Substances 0.000 title claims abstract description 68
- 238000005406 washing Methods 0.000 title claims abstract description 38
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 30
- 238000009388 chemical precipitation Methods 0.000 claims abstract description 80
- 239000002351 wastewater Substances 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003610 charcoal Substances 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 23
- 231100000719 pollutant Toxicity 0.000 claims abstract description 23
- 230000001376 precipitating effect Effects 0.000 claims abstract description 18
- 150000001768 cations Chemical class 0.000 claims abstract description 12
- 238000001179 sorption measurement Methods 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 10
- 230000003247 decreasing effect Effects 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 62
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 42
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 38
- 239000003729 cation exchange resin Substances 0.000 claims description 37
- 238000006243 chemical reaction Methods 0.000 claims description 32
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 30
- 239000011734 sodium Substances 0.000 claims description 29
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 27
- 229910052708 sodium Inorganic materials 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 22
- 239000003814 drug Substances 0.000 claims description 15
- 239000000920 calcium hydroxide Substances 0.000 claims description 13
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 13
- 229910052759 nickel Inorganic materials 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 11
- 238000011068 loading method Methods 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 239000004571 lime Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- 239000001110 calcium chloride Substances 0.000 claims description 6
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 6
- 238000011109 contamination Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 6
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 5
- 238000005341 cation exchange Methods 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 229910001453 nickel ion Inorganic materials 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000000356 contaminant Substances 0.000 claims description 4
- 239000006071 cream Substances 0.000 claims description 4
- 150000002815 nickel Chemical class 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical class [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000010842 industrial wastewater Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 description 6
- 238000005345 coagulation Methods 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 159000000007 calcium salts Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 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
- 238000009298 carbon filtering Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000019700 dicalcium phosphate Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 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
Classifications
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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)
- Treatment Of Water By Ion Exchange (AREA)
- Water Treatment By Sorption (AREA)
Abstract
A kind of acid washing phosphorization wastewater treatment method and system, belong to industrial wastewater treatment technology field, multi-grade chemical precipitating will be carried out after waste water chemical precipitation and quenched tune amount, then Adsorption is carried out by charcoal reactor, discharges water quality reaching standard after further decreasing the pollutant in waste water finally by cation resin exchange device.The present invention targetedly removes the pollutant in acid washing phosphorization waste water by the way of multistep treatment, process, stable, advantage of lower cost, high treating effect.
Description
Technical field
The present invention relates to a kind of coating wastewater processing method and systems, and in particular to a kind of acid washing phosphorization wastewater treatment method
And system, such as the acid washing phosphorization wastewater treatment of auto industry or similar industry, belong to industrial wastewater treatment technology field.
Background technique
To increase automobile or machinofacture coating corrosion resistant candle property, durability, need before painting treatment using at phosphatization
The protective layer of reason production automobile or machine components.Phosphorating treatment be a kind of chemistry that metal material and its article surface are carried out again
Processing technology.The phosphorating treatment of automobile or machinofacture be in the acid phosphating solution containing oxidant and various additives,
Chemical reaction occurs, generates precipitating, is attached to metal surface, constitutes phosphating coat.
It is removed in phosphorized waste water and contains a large amount of phosphate, zinc ion, nickel ion, the difference of phosphatization formula of liquid, phosphorized waste water
In may be also containing the pollutants such as heavy metals and surfactant such as a certain amount of copper ion or lead ion, complicated component, processing
Difficulty is larger.Especially phosphating solution is given off at this time using that will replace after a certain period of time containing the very high phosphatization of pollutant concentration
Tank liquor.If not dealing carefully with, serious pollution can be generated to environment.
In recent years, country increases counterweight point pollution industry such as automobile production enterprise and produces to efforts at environmental protection pay attention to day by day
The tour work of wastewater treatment situation, local government also propose volume increase to vehicle enterprise and do not increase dirty requirement, furthermore also improve phosphorus,
The appraisal standards of nickel contamination object index.Required for auto industry or machining industry acid washing phosphorization waste water conventional processes method
Processing equipment is more, adds that medicament kind is more, and dosage is big, and utilization rate of equipment and installations is low, and treatment effeciency is not high, operating cost is high, water outlet
Far from meeting current emissions requirement, therefore process, stable, advantage of lower cost treatment process are needed to solve
The above problem.
Such as application number CN201511004702.8, a kind of entitled " wastewater treatment dress for Treatment of Metal Surface workshop
Set and processing method ", disclose a kind of wastewater treatment equipment and processing method for Treatment of Metal Surface workshop, the waste water
Processing unit is to give up for Treatment of Metal Surface workshop to metal works progress oil removing, pickling, table tune, phosphorating treatment generation
Water, oil separator, conditioning tank, the first pH adjustment pond, the first coagulation reaction tank, flotation tank, the including passing sequentially through pipeline connection
Two pH adjust pond, the second coagulation reaction tank, the first sedimentation basin, intermediate pool, filtering and purifying, hydrolysis acidification pool, contact oxygen
Change pond, the second sedimentation basin, clear water reserviors, dispensation apparatus, sludge concentration tank.It is handled using wastewater treatment equipment provided by the present invention
After waste water, 80% is back to production line, 20% after advanced treating qualified discharge.
Separately there are application number CN201820065410.8, the utility model of entitled " a kind of acid washing phosphorization waste water treatment device "
Patent discloses a kind of acid washing phosphorization waste water treatment device, through direction successively includes that grille well, conditioning tank, coagulation are heavy along waste water stream
Shallow lake pond, inclined-tube sedimentation tank, pH readjustment pond, active carbon filtering device and clear water reserviors.The device utilizes the materialization of acid washing phosphorization waste water
Metal ion, SS and phosphate in the technologies such as chemical coagulation and precipitation and physical absorption segmentation removal waste water is respectively adopted in characteristic
Equal pollutants, and dosage is automatically adjusted by comparing each pond pH, waste water treatment efficiency is improved, input cost is reduced.
Although above-mentioned document is directed to the processing of phosphorized waste water, but its treatment effect or to be improved, therefore, still
It needs to improve.
Summary of the invention
The present invention is directed to the problem of current acid washing phosphorization wastewater treatment, and it is steady to propose a kind of process, operation
Fixed, the acid washing phosphorization wastewater treatment method of advantage of lower cost and system, to qualified discharge after waste water progress multistep treatment.
The present invention in order to solve the above problem used by technological means are as follows: a kind of acid washing phosphorization wastewater treatment method will give up
Multi-grade chemical precipitating is carried out after water chemistry precipitating and quenched tune amount, Adsorption is then carried out by charcoal reactor, finally
Water quality reaching standard is discharged after further decreasing the pollutant in waste water by cation resin exchange device.
Further, waste water chemical precipitation and quenched tune amount refer to by waste water import chemical precipitation pond after feeding lime cream and
PAM solution, precipitating removes phosphorus, nickel contamination object in waste water, and water quality is adjusted, and the waste water after adjusting is stablized into subsequent
Processing unit.
Further, milk of lime refers to lime aqueous solution, when waste water is normal acid washing phosphorization waste water, milk of lime in solution
Dosage is 1.0-2.5g/L mixed liquor；If tank liquor, milk of lime dosage is 3.5-10.0g/L mixed liquor in solution.
Further, when adding PAM solution, the dosage of PAM is not less than 0.004g/L mixed liquor.
Further, acid washing phosphorization waste water is adjusting the hydraulic detention time in sedimentation basin not less than 8h.
Further, multi-grade chemical precipitating is carried out to refer to using level-one chemical precipitation slot, secondary chemical precipitation tank and three-level
Chemical precipitation slot carries out multi stage precipitation removal after adding medicament to the pollutant in waste water.
Further, NaOH solution is added in level-one chemical precipitation slot to control the pH value of mixed liquor in 10-11, and is thrown
Add the nickel contamination object in PAC and PAM solution precipitating removal mixed liquor, the dosage of PAC and PAM in PAC the and PAM solution added
It is not less than 1.2g/L mixed liquor and 0.004g/L mixed liquor respectively.
Further, level-one chemical precipitation slot is divided into the reaction zone and settling zone of connection, inclined tube, water is arranged in settling zone
Power load control system is in 0.8-1.7m3/(m2.h), residence time of the mixing night in settling zone is not less than 1h.
Further, NaOH solution is added in secondary chemical precipitation tank to control the pH value of mixed liquor in 10-11, and is thrown
Add CaCl2, PAC and PAM solution precipitating removal mixed liquor in phosphate contaminants, the CaCl added2CaCl in solution2Throwing
Dosage 0.6-1.5g/L mixed liquor, the dosage of PAC and PAM is not less than 1.5g/L mixing respectively in PAC the and PAM solution added
Liquid and 0.004g/L mixed liquor.
Further, secondary chemical precipitation tank is divided into the reaction zone and settling zone of connection, inclined tube, water is arranged in settling zone
Power load control system is in 0.7-1.5m3/(m2.h), residence time of the mixing night in settling zone is not less than 1h.
Further, HCl solution is added in three-level chemical precipitation slot to control the pH value of mixed liquor in 7-8, is added
Na2CO3Calcium salt in solution precipitating removal mixed liquor, and nickel salt amount in mixed liquor is further decreased, wherein the Na added2CO3Solution
Middle Na2CO3Dosage in 1.0-2.4g/L mixed liquor.
Further, three-level chemical precipitation slot is divided into the reaction zone and settling zone of connection, inclined tube, water is arranged in settling zone
Power load control system is in 0.6-1.2m3/(m2.h), residence time of the mixing night in settling zone is not less than 1h.
Further, charcoal reactor progress Adsorption, which refers to, passes through biological carbon surface using charcoal reactor
PO in active group Adsorption mixed liquor4 3-- P and nickel ion, while filtering removal three-level chemical precipitation slot and going out in water mixed liquid
Suspended particulate reduces the risk blocked to subsequent reactions unit.
Further, charcoal particle size range is 0.5-2.0mm, and pillar height degree is in 1.0-3.0m, and filtering velocity is in 3.0-
7.0m/h, residence time of the waste water in biological charcoal post are not less than 15min.
Further, cation exchange resin selects gel-type strongly acidic cation exchange resin, macroporous type faintly acid sun
Ion exchange resin or gel-type weak-acid cation-exchange resin, and put into operation with sodium form resin, further decrease biology
Make to be discharged qualified discharge after micro-nickel in the water outlet of charcoal reactor.
Further, storng-acid cation exchange resin (sodium form) column resin thickness is 0.5-1.0m, Subacidity cation
Exchanger resin (sodium form) thickness 0.5-1.2m, storng-acid cation exchange resin (sodium form) column filtering velocity are less than or equal to 25m/h, weak acid
Property cation exchange resin (sodium form) column filtering velocity be less than or equal to 15m/h.
A kind of acid washing phosphorization waste water treatment system adjusts simultaneously chemical sink to waste water progress water quality and quantity including what is be sequentially communicated
It is heavy to add the multi-grade chemical that medicament carries out chemical precipitation removal to pollutant for different pollutants for the adjusting chemical precipitation pond in shallow lake
Shallow lake slot carries out the charcoal reactor and cation resin exchange device of Adsorption to pollutant.
Further, adjusting chemical precipitation pond includes adjusting unit and chemical precipitation unit, adjusts unit and throws equipped with medicament
Feeder apparatus and submersible agitator.
Further, the partition wall bottom for adjusting unit and chemical precipitation unit is equipped with perforation tracery wall.
Further, multi-grade chemical precipitation tank includes that level-one chemical precipitation slot, secondary chemical precipitation tank and three-level chemistry are heavy
Shallow lake slot, every level-one, which is divided equally, is divided into reaction zone and settling zone, medicament addition device is equipped on the reaction zone of every level-one, reaction zone is set
Set submersible agitator and pH monitoring device.
Further, settling zone is provided with inclined tube.
Further, reaction zone and the partition wall bottom for sinking to the bottom area are equipped with perforation tracery wall.
Further, cation exchange resin be gel-type strongly acidic cation exchange resin, macroporous type faintly acid sun from
Sub-exchange resin or gel-type weak-acid cation-exchange resin, and put into operation with sodium form resin.
Further, storng-acid cation exchange resin (sodium form) column resin thickness is 0.5-1.0m, Subacidity cation
Exchanger resin (sodium form) thickness 0.5-1.2m, storng-acid cation exchange resin (sodium form) column filtering velocity are less than or equal to 25m/h, weak acid
Property cation exchange resin (sodium form) column filtering velocity be less than or equal to 15m/h.
Further, charcoal particle size range is 0.5-2.0mm in charcoal reactor, and pillar height degree is in 1.0-
3.0m, filtering velocity are not less than 15min in 3.0-7.0m/h, residence time of the waste water in biological charcoal post.
The beneficial effects of the present invention are:
The present invention targetedly removes the pollutant in acid washing phosphorization waste water by the way of multistep treatment, process,
Stable, advantage of lower cost, high treating effect.
Detailed description of the invention
Fig. 1 is flow diagram of the present invention.
Specific embodiment
The following further describes the present invention with reference to the drawings.
Embodiment one
As shown in Figure 1, a kind of acid washing phosphorization waste water treatment system, including the adjusting chemical precipitation pond being sequentially communicated, multi-grade chemical
Precipitation tank, charcoal reactor and last cation resin exchange device.
It adjusts chemical precipitation pond and collects acid washing phosphorization waste water, make after discharging unstable waste water remittance adjusting chemical precipitation pond
Stablize and enters subsequent processing units.It adjusts chemical precipitation pond and is divided into two lattice, be divided into and adjust unit and chemical precipitation unit, adjust
Unit is the gateway unit of waste water, and medicament addition device is arranged on adjusting unit, adjusts and diving mixing device is arranged in unit,
Feeding lime cream and PAM solution, milk of lime can play neutralization, and PAM solution makes the pollutant in waste water generate coagulating sedimentation,
Waste water is reduced to the processing load of subsequent processing units.Specifically, milk of lime, that is, mass fraction is 40-50% lime aqueous solution, if
For normal acid washing phosphorization waste water, milk of lime dosage is 2.5-6.5ml/L, if tank liquor, dosage 9-25ml/L；It helps solidifying
Agent PAM is configured to 0.2% PAM solution, and dosage is not less than 2ml/L；Residence time of the waste water in adjusting unit is not less than 6h,
To carry out adequately neutralizing the processing such as coagulation to water quality.The partition wall bottom for adjusting unit and chemical precipitation unit is equipped with perforation flower
Wall adjusts unit water outlet from perforation tracery wall and enters chemical precipitation unit, is not less than in the hydraulic detention time of chemical precipitation unit
2h.The water outlet of chemical precipitation unit is pumped up into subsequent multi-grade chemical precipitation tank, and the waste residue being settled out is after collecting compression by danger
It is useless to be sent into special mechanism processing.
Multi-grade chemical precipitation tank includes level-one chemical precipitation slot, secondary chemical precipitation tank and three-level chemical precipitation slot, each
Grade is divided into reaction zone and settling zone, and medicament addition device is equipped on the reaction zone of every level-one, is respectively provided in reaction zone latent
Inclined tube is arranged in water stirring and pH monitoring device, the settling zone of every level-one, and reaction zone and the partition wall bottom for sinking to the bottom area are equipped with perforation flower
Wall.
Level-one chemical precipitation slot is mainly the key reaction unit for removing nickel in acid washing phosphorization waste water, adds medicine in reaction zone
Agent is mainly NaOH solution, PAC and PAM solution, and NaOH solution dosage is determined by mixed liquor pH value, and specifically, NaOH is matched
It is set to the aqueous solution that mass fraction is 20%, by adding pH control of the NaOH solution by mixed liquor in 10-11, generates hydroxide
The sediments such as nickel are removed nickel；By PAC and PAM be each configured to mass fraction be 3 0% and 0.2% aqueous solution, PAC and
PAM solution dosage is not less than 4ml/L and 2ml/L respectively, promotes suspended matter in mixed liquor by adding PAC and PAM solution
Flocculation sedimentation.For the mixed liquor sufficiently reacted by perforation tracery wall even into settling zone, inclined tube, hydraulic loading control is arranged in settling zone
System is in 0.8-1.7m3/(m2.h), residence time of the mixed liquor in settling zone is not less than 1h, and water outlet is entered according to elevation by effluent weir
Secondary chemical precipitation tank, the waste residue being settled out are sent into special mechanism by dangerous waste after collecting compression and are handled.
Secondary chemical precipitation tank is mainly the important reaction member for removing acid washing phosphorization phosphate in waste water, is thrown in reaction zone
Adding medicine is mainly NaOH, CaCl2, PAC, PAM solution.NaOH solution dosage is by pH probe real-time control, tool in mixed liquor
Body, by NaOH, CaCl2, to be configured to mass fraction be 20%, 20%, 30% and 0.2% aqueous solution by PAC and PAM, by adding
NaOH maintains the pH value of mixed liquor between 10-11, CaCl2Solution dosage is thrown in 3-8ml/L, PAC and PAM solution
Dosage is not less than 5ml/L and 2ml/L respectively, generates the calcium salts such as calcium phosphate, calcium monohydrogen phosphate for pollutant and precipitates removal, by adding
PAC and PAM solution promotes the flocculation sedimentation of suspended matter in mixed liquor.The mixed liquor sufficiently reacted by perforation tracery wall even into
Inclined tube is arranged in settling zone, settling zone, and hydraulic loading is controlled in 0.7-1.5m3/(m2.h), residence time of the mixed liquor in settling zone
Not less than 1h, water outlet enters secondary chemical precipitation tank by effluent weir according to elevation, and the waste residue being settled out is after collecting compression by danger
It is useless to be sent into special mechanism processing.
Three-level chemical precipitation slot is mainly used for removing calcium salt in mixed liquor, and further decreases nickel salt amount in mixed liquor, throws
Adding medicine is mainly HCl, Na2CO3Solution, HCl solution dosage is by pH probe real-time control in mixed liquor.Specifically, by HCl,
Na2CO3Being configured to mass fraction is respectively 10%, 20% aqueous solution, and the pH value of mixed liquor is maintained 7-8 by adding HCl solution
Between, Na2CO3Solution dosage generates calcium carbonate etc. for pollutant component and precipitates removal in 5-12ml/L.That sufficiently reacts is mixed
Liquid is closed by perforation tracery wall even into settling zone, inclined tube is arranged in settling zone, and hydraulic loading is controlled in 0.6-1.2m3/(m2.h),
Residence time of the mixed liquor in settling zone is not less than 1h, and water outlet enters secondary chemical precipitation tank by effluent weir according to elevation, precipitates
Waste residue out is sent into special mechanism processing by dangerous waste after collecting compression.
Charcoal particle size range in charcoal reactor is 0.5-2.0mm, and pillar height degree exists in 1.0-3.0m, filtering velocity
3.0-7.0m/h, residence time of the waste water in biological charcoal post are not less than 15min.It is adsorbed by the active group of biological carbon surface
Remove PO in mixed liquor4 3-- P and nickel ion, while filtering removal three-level chemical precipitation slot and going out suspended particulate in water mixed liquid, it drops
The low risk to the blocking of subsequent reactions unit.
Gel-type strongly acidic cation exchange resin, the exchange of macroporous type Subacidity cation can be selected in cation exchange resin
Resin or gel-type weak-acid cation-exchange resin, and should be put into operation with sodium form resin, storng-acid cation exchange resin
(sodium form) column resin thickness be 0.5-1.0m, weak-acid cation-exchange resin (sodium form) thickness 0.5-1.2m, highly acid sun from
Sub-exchange resin (sodium form) column filtering velocity is less than or equal to 25m/h, and weak-acid cation-exchange resin (sodium form) column filtering velocity is less than or equal to
15m/h.Cation resin exchange device further decreases micro-nickel in the water outlet of charcoal reactor, handles through cation exchange resin
Standard water discharge be discharged into city planting ductwork.
Above-described embodiment further relates to a kind of acid washing phosphorization wastewater treatment method, by waste water chemical precipitation and quenched tune amount it is laggard
Row multi-grade chemical precipitating, then carries out Adsorption by charcoal reactor, finally by cation resin exchange device into one
Step discharges water quality reaching standard after reducing the pollutant in waste water.
Waste water chemical precipitation and quenched tune amount refer to by waste water import chemical precipitation pond after feeding lime cream and PAM solution,
Phosphor contaminant in precipitating removal waste water, and water quality is adjusted, the waste water after adjusting, which is stablized, enters subsequent processing units.It is logical
It crosses chemical precipitation tentatively to remove the pollutant in waste water, mitigates the pressure in subsequent processing.
Milk of lime refers to lime aqueous solution, and when waste water is normal acid washing phosphorization waste water, milk of lime dosage is in solution
1.0-2.5g/L mixed liquor；If tank liquor, milk of lime dosage is 3.5-10.0g/L mixed liquor in solution.According to different
Water quality determines the content of the milk of lime added, to ensure targetedly to handle different waste water.
When adding PAM solution, the dosage of PAM is not less than 0.004g/L mixed liquor.
Acid washing phosphorization waste water is adjusting the hydraulic detention time in sedimentation basin not less than 8h.
Multi-grade chemical precipitating is carried out to refer to using level-one chemical precipitation slot, secondary chemical precipitation tank and three-level chemical precipitation slot
Multi stage precipitation removal is carried out after adding medicament to the pollutant in waste water.To different pollutions in such a way that multi-grade chemical precipitates
Object is pointedly removed, to remove the pollutant in waste water to the maximum extent.
NaOH solution is added in level-one chemical precipitation slot to control the pH value of mixed liquor in 10-11, and add PAC and
PAM solution precipitating removes the nickel contamination object in mixed liquor, and the dosage of PAC and PAM is distinguished not in PAC the and PAM solution added
Lower than 1.2g/L mixed liquor and 0.004g/L mixed liquor.
Level-one chemical precipitation slot is divided into the reaction zone and settling zone of connection, inclined tube, hydraulic loading control is arranged in settling zone
System is in 0.8-1.7m3/(m2.h), residence time of the mixing night in settling zone is not less than 1h.
NaOH solution is added in secondary chemical precipitation tank to control the pH value of mixed liquor in 10-11, and adds CaCl2、
Phosphate contaminants in PAC and PAM solution precipitating removal mixed liquor, the CaCl added2CaCl in solution2Dosage 0.6-
1.5g/L mixed liquor, in PAC the and PAM solution added the dosage of PAC and PAM be not less than respectively 1.5g/L mixed liquor and
0.004g/L mixed liquor.
Secondary chemical precipitation tank is divided into the reaction zone and settling zone of connection, inclined tube, hydraulic loading control is arranged in settling zone
System is in 0.7-1.5m3/(m2.h), residence time of the mixing night in settling zone is not less than 1h.
HCl solution is added in three-level chemical precipitation slot to control the pH value of mixed liquor in 7-8, adds Na2CO3Solution is heavy
It forms sediment and removes calcium salt in mixed liquor, and further decrease nickel salt amount in mixed liquor, wherein the Na added2CO3Na in solution2CO3Throwing
Dosage is in 1.0-2.4g/L mixed liquor.
Three-level chemical precipitation slot is divided into the reaction zone and settling zone of connection, inclined tube, hydraulic loading control is arranged in settling zone
System is in 0.6-1.2m3/(m2.h), residence time of the mixing night in settling zone is not less than 1h.
Charcoal reactor is carried out Adsorption and refers to the active group for being passed through biological carbon surface using charcoal reactor
PO in Adsorption mixed liquor4 3-- P and nickel ion, while filtering removal three-level chemical precipitation slot and going out suspension in water mixed liquid
Grain reduces the risk blocked to subsequent reactions unit.
Charcoal particle size range is 0.5-2.0mm, and pillar height degree is in 1.0-3.0m, and filtering velocity is in 3.0-7.0m/h, waste water
Residence time in biological charcoal post is not less than 15min.
Cation exchange resin selects gel-type strongly acidic cation exchange resin, macroporous type Subacidity cation exchange tree
Rouge or gel-type weak-acid cation-exchange resin, and put into operation with sodium form resin, it further decreases charcoal reactor and goes out
Make to be discharged qualified discharge after micro-nickel in water.
Storng-acid cation exchange resin (sodium form) column resin thickness is 0.5-1.0m, weak-acid cation-exchange resin
(sodium form) thickness 0.5-1.2m, storng-acid cation exchange resin (sodium form) column filtering velocity are less than or equal to 25m/h, Subacidity cation
Exchanger resin (sodium form) column filtering velocity is less than or equal to 15m/h.
It can be seen from above-described embodiment that the present invention is by the way of multistep treatment to the pollution in acid washing phosphorization waste water
Object targetedly removes, process, stable, advantage of lower cost, high treating effect.
Above embodiments are used for illustrative purposes only, rather than limitation of the present invention, the technology people in relation to technical field
Member without departing from the spirit and scope of the present invention, can also make a variety of changes or convert, therefore is all equivalent
Technical solution also should belong to protection scope of the present invention, and protection scope of the present invention should be limited by each claim.
Claims (10)
1. a kind of acid washing phosphorization wastewater treatment method, it is characterised in that: will be carried out after waste water chemical precipitation and quenched tune amount multistage
Then chemical precipitation carries out Adsorption by charcoal reactor, further decreases finally by cation resin exchange device
Water quality reaching standard is discharged after pollutant in waste water.
2. acid washing phosphorization wastewater treatment method as described in claim 1, it is characterised in that: waste water chemical precipitation and quenched tune amount
Refer to that, by feeding lime cream and PAM solution behind waste water remittance chemical precipitation pond, precipitating removes phosphorus, nickel contamination object in waste water, and
Water quality is adjusted, the waste water after adjusting, which is stablized, enters subsequent processing units；
Milk of lime refers to lime aqueous solution, and when waste water is normal acid washing phosphorization waste water, milk of lime dosage is 1.0- in solution
2.5g/L mixed liquor；If tank liquor, milk of lime dosage is 3.5-10.0g/L mixed liquor in solution；
When adding PAM solution, the dosage of PAM is not less than 0.004g/L mixed liquor；
Acid washing phosphorization waste water is adjusting the hydraulic detention time in sedimentation basin not less than 8h.
3. acid washing phosphorization wastewater treatment method as described in claim 1, it is characterised in that: progress multi-grade chemical precipitating, which refers to, adopts
It is carried out after adding medicament to the pollutant in waste water with level-one chemical precipitation slot, secondary chemical precipitation tank and three-level chemical precipitation slot
Multi stage precipitation removal；
NaOH solution is added in level-one chemical precipitation slot to control the pH value of mixed liquor in 10-11, and adds PAC and PAM is molten
Liquid precipitate removes the nickel contamination object in mixed liquor, and the dosage of PAC and PAM is not less than respectively in PAC the and PAM solution added
1.2g/L mixed liquor and 0.004g/L mixed liquor；
Level-one chemical precipitation slot is divided into the reaction zone and settling zone of connection, inclined tube is arranged in settling zone, and hydraulic loading control exists
0.8 - 1.7m3/(m2.h), residence time of the mixing night in settling zone is not less than 1h.
4. acid washing phosphorization wastewater treatment method as described in claim 1, it is characterised in that: added in secondary chemical precipitation tank
NaOH solution controls the pH value of mixed liquor in 10-11, and adds CaCl2, PAC and PAM solution precipitating removal mixed liquor in
Phosphate contaminants, the CaCl added2CaCl in solution2Dosage 0.6-1.5g/L mixed liquor, PAC the and PAM solution added
The dosage of middle PAC and PAM is not less than 1.5g/L mixed liquor and 0.004g/L mixed liquor respectively；
Secondary chemical precipitation tank is divided into the reaction zone and settling zone of connection, inclined tube is arranged in settling zone, and hydraulic loading control exists
0.7-1.5m3/(m2.h), residence time of the mixing night in settling zone is not less than 1h.
5. acid washing phosphorization wastewater treatment method as described in claim 1, it is characterised in that: added in three-level chemical precipitation slot
HCl solution controls the pH value of mixed liquor in 7-8, adds Na2CO3Calcium salt in solution precipitating removal mixed liquor, and further decrease
Nickel salt amount in mixed liquor, wherein the Na added2CO3Na in solution2CO3Dosage in 1.0-2.4g/L mixed liquor；
Three-level chemical precipitation slot is divided into the reaction zone and settling zone of connection, inclined tube is arranged in settling zone, and hydraulic loading control exists
0.6-1.2m3/(m2.h), residence time of the mixing night in settling zone is not less than 1h.
6. acid washing phosphorization wastewater treatment method as described in claim 1, it is characterised in that: charcoal reactor carries out absorption and goes
Pass through PO in the active group Adsorption mixed liquor of biological carbon surface using charcoal reactor except referring to4 3-- P and nickel ion,
Removal three-level chemical precipitation slot is filtered simultaneously and goes out suspended particulate in water mixed liquid, reduces the risk blocked to subsequent reactions unit；
Charcoal particle size range is 0.5-2.0mm, and pillar height degree is in 1.0-3.0m, and filtering velocity is in 3.0-7.0m/h, and waste water is in life
Residence time in object charcoal post is not less than 15min.
7. acid washing phosphorization wastewater treatment method as described in claim 1, it is characterised in that: cation exchange resin selects gel
Type storng-acid cation exchange resin, macroporous type weak-acid cation-exchange resin or gel-type Subacidity cation exchange tree
Rouge, and put into operation with sodium form resin, further decreasing makes to be discharged qualified discharge after micro-nickel in the water outlet of charcoal reactor；
Storng-acid cation exchange resin (sodium form) column resin thickness is 0.5-1.0m, weak-acid cation-exchange resin (sodium form)
Thickness 0.5-1.2m, storng-acid cation exchange resin (sodium form) column filtering velocity are less than or equal to 25m/h, Subacidity cation exchange tree
Rouge (sodium form) column filtering velocity is less than or equal to 15m/h.
8. a kind of acid washing phosphorization waste water treatment system, it is characterised in that: carry out water quality and quantity tune to waste water including what is be sequentially communicated
The adjusting chemical precipitation pond for saving simultaneously chemical precipitation adds medicament for different pollutants and carries out chemical precipitation removal to pollutant
Multi-grade chemical precipitation tank carries out the charcoal reactor and cation resin exchange device of Adsorption to pollutant.
9. acid washing phosphorization waste water treatment system as claimed in claim 8, it is characterised in that: adjusting chemical precipitation pond includes adjusting
Reaction member and precipitation unit adjust unit and are equipped with medicament addition device and submersible agitator；
Multi-grade chemical precipitation tank includes that level-one chemical precipitation slot, secondary chemical precipitation tank and three-level chemical precipitation slot, every level-one are equal
It is divided into reaction zone and settling zone, medicament addition device is equipped on the reaction zone of every level-one, sets submersible agitator in reaction zone
With pH monitoring device.
10. acid washing phosphorization waste water treatment system as claimed in claim 8, it is characterised in that: cation exchange resin is gel
Type storng-acid cation exchange resin, macroporous type weak-acid cation-exchange resin or gel-type Subacidity cation exchange tree
Rouge, and put into operation with sodium form resin；
Storng-acid cation exchange resin (sodium form) column resin thickness is 0.5-1.0m, weak-acid cation-exchange resin (sodium form)
Thickness 0.5-1.2m, storng-acid cation exchange resin (sodium form) column filtering velocity are less than or equal to 25m/h, Subacidity cation exchange tree
Rouge (sodium form) column filtering velocity is less than or equal to 15m/h；
Charcoal particle size range is 0.5-2.0mm in charcoal reactor, and pillar height degree is in 1-3m, and filtering velocity is in 3.0-7.0m/
H, residence time of the waste water in biological charcoal post are not less than 15min.
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| CN106554107A (en) * | 2016-05-17 | 2017-04-05 | 浙江吉利汽车有限公司 | A kind of phosphorized waste water handling process |
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| JP2010100875A (en) * | 2008-10-21 | 2010-05-06 | Toda Kogyo Corp | Methods for oxidizing hypophosphoric acid ion and phosphorous acid ion, method for cleaning electroless nickel plating waste liquid, and method for recycling phosphate |
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