CN105152396B - The processing method of arsenic-containing waste water - Google Patents
The processing method of arsenic-containing waste water Download PDFInfo
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- CN105152396B CN105152396B CN201510541462.9A CN201510541462A CN105152396B CN 105152396 B CN105152396 B CN 105152396B CN 201510541462 A CN201510541462 A CN 201510541462A CN 105152396 B CN105152396 B CN 105152396B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 66
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 37
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000003672 processing method Methods 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 82
- 238000001914 filtration Methods 0.000 claims abstract description 57
- 239000000706 filtrate Substances 0.000 claims abstract description 40
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims abstract description 35
- 150000001875 compounds Chemical class 0.000 claims abstract description 35
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 35
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000000292 calcium oxide Substances 0.000 claims abstract description 24
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 20
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 9
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 9
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 9
- 230000035484 reaction time Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 26
- 238000005345 coagulation Methods 0.000 abstract description 7
- 230000015271 coagulation Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000001179 sorption measurement Methods 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 230000001112 coagulating effect Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000003311 flocculating effect Effects 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- 238000005352 clarification Methods 0.000 description 11
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 10
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 9
- 238000009616 inductively coupled plasma Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 238000000712 atomic emission detection Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 229910017251 AsO4 Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 1
- 238000005354 coacervation Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000227 grinding Methods 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
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Removal Of Specific Substances (AREA)
Abstract
The invention provides a kind of processing method of arsenic-containing waste water, including：A) by waste water and the first reaction material hybrid reaction, press filtration, filtrate is obtained；First reaction material includes hydrogen peroxide, ferric iron source compound, calcium oxide and diatomite；B) by the filtrate and the second reaction material hybrid reaction, press filtration, processed waste water is obtained；Second reaction material includes ferric iron source compound and polyacrylamide.The present invention is by hydrogen peroxide oxidation, then flocculating setting after ferric iron source compound, calcium oxide and diatomite Coagulation and Adsorption, tentatively reaches the purpose of arsenic removal；Then reach the purpose of final arsenic removal by ferric iron source compound oxidation and polyacrylamide coagulating sedimentation.Test result indicates that the processing method of the arsenic-containing waste water by the present invention, the water quality arsenic content that final process obtains is below 0.5mg/L.
Description
Technical field
The present invention relates to field of waste water treatment, more particularly, to a kind of processing method of arsenic-containing waste water.
Background technology
The waste water of solid particle containing GaAs caused by mainly in the production process grinding stage of wastewater source containing AS.Arsenic
Gallium chemical formula GaAs, molecular weight 144.63, dark gray solid, 1238 DEG C of fusing point, 5.37 grams/cc of density.Arsenic is a kind of
Extremely toxic substance, it is big to human body and environmental hazard, belong to national a class of pollutant, its highest allows discharge quality concentration to be 0.5mg/L.
If the directly outer row of GaAs waste water can not only cause serious pollution, human health damage to environment but also can bring huge wave
Take, so as to cause unnecessary economic loss to enterprise.
Existing handling process is sheerly hand-manipulated, and treatment effect is bad, and dosing complex steps, is added to processing
Cost.In addition, prior art can add sulfuric acid in processes, it can be polluted for water body and soil, and by skin and
The tissue of mucous membrane produces harm to health.
The content of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of processing method of arsenic-containing waste water, the present invention
The processing method of the arsenic-containing waste water of offer is simple, safe, small to environment and man body pollution.
The invention provides a kind of processing method of arsenic-containing waste water, including：
A) by waste water and the first reaction material hybrid reaction, press filtration, filtrate is obtained；First reaction material include hydrogen peroxide,
Ferric iron source compound, calcium oxide and diatomite；
B) by the filtrate and the second reaction material hybrid reaction, press filtration, processed waste water is obtained；The second reaction material bag
Compound containing ferric iron source and polyacrylamide.
Preferably, the step A) include：
A1) by waste water and hydrogen peroxide hybrid reaction, the first reaction solution is obtained；
A2) first reaction solution is mixed with ferric iron source compound, adjusts pH value, obtains the second reaction solution；
A3) second reaction solution is mixed with calcium oxide, diatomite, press filtration, obtains filtrate.
Preferably, the step a1) in the mass ratio of waste water and hydrogen peroxide be 100:0.002~0.004.
Preferably, the step a1) reaction time be 4~6h.
Preferably, the step a2) mass ratio of waste water and ferric iron source compound is 100:0.020~0.030.
Preferably, one or more of the ferric iron source compound in bodied ferric sulfate and ferric trichloride.
Preferably, the step a2) pH value is adjusted as regulation pH value to 4.5~5.5.
Preferably, the step a3) waste water and calcium oxide, diatomaceous mass ratio be 100:(0.004~0.006):
(0.0005~0.0015).
Preferably, the step B) include：
Mixed by the filtrate and ferric iron source compound hybrid reaction, regulation pH value, with polyacrylamide, press filtration, must
To processed waste water.
Preferably, the regulation pH value is regulation pH value to 6~9.
Compared with prior art, the invention provides a kind of processing method of arsenic-containing waste water, including：A) by waste water and first
Reaction material hybrid reaction, press filtration, obtains filtrate；First reaction material include hydrogen peroxide, ferric iron source compound, calcium oxide and
Diatomite；B) by the filtrate and the second reaction material hybrid reaction, press filtration, processed waste water is obtained；The second reaction material bag
Compound containing ferric iron source and polyacrylamide.The present invention by hydrogen peroxide oxidation, then ferric iron source compound, calcium oxide and
Flocculating setting after diatomite Coagulation and Adsorption, tentatively reach the purpose of arsenic removal；Then by ferric iron source compound oxidation and poly-
Acrylamide coagulating sedimentation reaches the purpose of final arsenic removal.Test result indicates that the processing side of the arsenic-containing waste water by the present invention
Method, the water quality arsenic content that final process obtains is below 0.5mg/L.
Embodiment
The invention provides a kind of processing method of arsenic-containing waste water, including：
A) by waste water and the first reaction material hybrid reaction, press filtration, filtrate is obtained；First reaction material include hydrogen peroxide,
Ferric iron source compound, calcium oxide and diatomite；
B) by the filtrate and the second reaction material hybrid reaction, press filtration, processed waste water is obtained；The second reaction material bag
Compound containing ferric iron source and polyacrylamide.
In the present invention, the step A) preferably include：
A1) by waste water and hydrogen peroxide hybrid reaction, the first reaction solution is obtained；
A2) first reaction solution is mixed with ferric iron source compound, adjusts pH value, obtains the second reaction solution；
A3) second reaction solution is mixed with calcium oxide, diatomite, press filtration, obtains filtrate.
For the present invention to the waste water without limiting, the mass concentration containing arsenic is the waste water of 60~100mg/L mass concentrations
Good purified treatment can be carried out by this method.
The present invention obtains the first reaction solution first by waste water and hydrogen peroxide hybrid reaction.The matter of the waste water and hydrogen peroxide
Measure ratio preferably 100:0.002~0.004, more preferably 100:0.003.The reaction time is preferably 4~6h, more preferably
4.5~5.5h.
The present invention, without limiting, can be those skilled in the art for the carrying waste water and the container of reaction material
Well known reactive tank.Waste water and hydrogen peroxide hybrid reaction, hydrogen peroxide is by the As in waste water3+It is oxidized to As5+。
First reaction solution is mixed with ferric iron source compound, adjusts pH value, obtains the second reaction solution.The waste water
Mass ratio with ferric iron source compound is preferably 100:0.020~0.030, more preferably 100:0.023~0.025.
In the present invention, the ferric iron source compound is preferably selected from one kind or several in bodied ferric sulfate and ferric trichloride
Kind.The mixing is preferably to be stirred, and the time being stirred is preferably 30~60min, more preferably 40~
50min.Instrument of the invention for the stirring can be mixer well known to those skilled in the art without limiting.
In the present invention, the regulation pH value is adjusts pH value preferably to 4.5~5.5, more preferably to 5.
Contain Fe in ferric iron source compound3+, facile hydrolysis is Fe (OH) in aqueous3, Coagulation and Adsorption As5+。
Second reaction solution is mixed with calcium oxide, diatomite, press filtration, obtain filtrate.The waste water and calcium oxide, silicon
The mass ratio of diatomaceous earth is preferably 100:(0.004~0.006):(0.0005~0.0015), more preferably 100:0.005:
0.001。
The mixing is preferably to be stirred, and the preferably addition calcium oxide that is stirred is stirred 20~40min,
Add diatomite and be stirred 20~40min.More preferably add calcium oxide and be stirred 25~30min, add diatom
Soil is stirred 25~30min.
Contain As above-mentioned5+Waste water in add calcium oxide, diatomite reaction, formed Ca4(OH)2(AsO4)2·4H2O、
Ca5(AsO4)3OH and Ca3(AsO4)2Deng.The organic matter inorganic matter coagulant precipitation in water is ultimately formed precipitation by diatomite simultaneously.
Mode and equipment of the invention for the press filtration is without limiting, press filtration mode well known to those skilled in the art
Can be plate and frame filter press with equipment.It is specifically as follows between pressure is adjusted to 14~16kg between plate and frame filter press plate,
Pressurize 30min is constant can water flowing.
After and after press filtration, amount containing As can reach the purpose of preliminary arsenic removal typically in 10mg/L or so.
The clear filtrate that press filtration is obtained carries out subsequent operation.
By the filtrate and the second reaction material hybrid reaction, press filtration, processed waste water is obtained；Second reaction material includes
Ferric iron source compound and polyacrylamide.
Preferably, the step B) include：
Mixed by the filtrate and ferric iron source compound hybrid reaction, regulation pH value, with polyacrylamide, press filtration, must
To processed waste water.
Specially first by filtrate and ferric iron source compound hybrid reaction, the filtrate and the ferric iron source compound
Mass ratio be preferably 100：0.005~0.015, more preferably 100：0.01.
The present invention, without limiting, can be well known to those skilled in the art anti-to the container of carrying filtrate and reaction material
Answer groove.
The hybrid reaction is preferably to be stirred, and the time being stirred is preferably 30~50min, more preferably
35~40min.
Filtrate carries out coagulating, further Coagulation and Adsorption pentavalent arsenic with ferric iron source compound.
After being stirred, it is 6~9 preferably to add NaOH regulations pH, continues to be stirred, the time being stirred
Preferably 20~40min, more preferably 25~30min.The mass percent of the addition NaOH is preferably 0.0025%~
0.004%, more preferably 0.003%.
Stirring reaction add polyacrylamide mixed precipitation after, press filtration, obtain processed waste water.
The polyacrylamide and the mass ratio of the filtrate are preferably 0.00015~0.00020:100；More preferably
0.00017：100..
In the present invention, in order to avoid above-mentioned Ca3(AsO4)2Etc. the anti-dissolving of precipitation, filtrate and ferric iron source are first passed through
Compound carries out coagulating, further Coagulation and Adsorption pentavalent arsenic, then adjusts pH value and to form hydroxide colloid and poly- third
Acrylamide coordinates further Coagulation and Adsorption impurity to surface, and cohesion is collided in the presence of electrolyte in water, by surface arsenic
Thing is wrapped in coacervation body, and it is coprecipitated to form velvet-like gel.
Through press filtration after and, processed waste water is obtained.
Mode and equipment of the invention for the press filtration is without limiting, press filtration mode well known to those skilled in the art
Can be plate and frame filter press with equipment.It is specifically as follows between pressure is adjusted to 14~16kg between plate and frame filter press plate,
Pressurize 30min is constant can water flowing.
The filtrate that press filtration obtains can be detected, and analyze the unqualified step B that can return to and further handle, analyze
Qualified filtrate can preferably pass through the further impurity such as filtering large particulate matter and obtain processed waste water.
The invention provides a kind of processing method of arsenic-containing waste water, including：A) by waste water and the first reaction material hybrid reaction,
Press filtration, obtain filtrate；First reaction material includes hydrogen peroxide, ferric iron source compound, calcium oxide and diatomite；B) by described in
Filtrate and the second reaction material hybrid reaction, press filtration, obtain processed waste water；Second reaction material includes ferric iron source compound
And polyacrylamide.The present invention is by hydrogen peroxide oxidation, then after ferric iron source compound, calcium oxide and diatomite Coagulation and Adsorption
Flocculating setting, tentatively reach the purpose of arsenic removal；Then pass through ferric iron source compound oxidation and polyacrylamide coagulating sedimentation
Reach the purpose of final arsenic removal.Test result indicates that the processing method of the arsenic-containing waste water by the present invention, what final process obtained
Water quality arsenic content is below 0.5mg/L.
Present invention preferably employs inductively coupled plasma atomic emission detection to be measured to arsenic content, and design parameter is such as
Under：
Instrument：Inductive coupling plasma emission spectrograph model：ICP-OES
High frequency power：27.12MHz power outputs：800~1600w cooling gas flows：18L/min secondary air amounts：
0.75L/min atomizers solution inhales spray speed：1.50L/min right-angle view height：15mm analytical lines：188.979
Preheating time 30s；Time for exposure 10s.
In order to further illustrate the present invention, the processing method of arsenic-containing waste water provided by the invention is entered with reference to embodiments
Row is described in detail.
Embodiment 1
GaAs collecting pit waste water lifting can extremely be filled to the 1# reactive tanks of 30 tons of waste liquid with elevator pump, the quality of wherein arsenic is dense
Degree is 60mg/L.
The H for adding 0.003 ﹪ wt is added toward 1# reactive tanks2O2, by As in waste water3+4h is aoxidized into As5+Afterwards.Add
The Fe that 0.023 ﹪ wt bodied ferric sulfate is dissolved out3+Stir 40min regulations pH=5.Opened after adding 0.005 ﹪ wt CaO
1# mixers react 30min in stirring at normal temperature.0.001 ﹪ industrial diatomite is added, is pressed after stirring reaction 30min
Filter.
Pressure is adjusted between 15kg between 1# sheet frames are pressed into mud machine plate, can water flowing after pressurize 30min is constant.Check good pressure
Filter whether compression state, checked after opening 1# filter pressing pumps after pipeline valve, then open 1# press filtration circulating pump press filtrations.Pressure
The filtrate of filter clarification gets to No. 2 reactive tanks；
0.01 ﹪ wt bodied ferric sulfate stirring reaction 40min is added toward 2# reactive tanks.Add about 0.003 ﹪ wt's
NaOH continues stirring reaction 30min after adjusting pH=6, adds press filtration after the 500g prepared PAM stirrings 10min；By 2#
The filtrate of filter press press filtration clarification gets to 3# reactive tanks, sampling detection As contents, the water quality that the embodiment of the present invention is handled to obtain
Carry out inductively coupled plasma atomic emission detection, the results showed that, handle As in obtained water quality through the embodiment of the present invention 1 and contain
Measure as 0.3mg/L.
Embodiment 2
GaAs collecting pit waste water lifting can extremely be filled to the 1# reactive tanks of 30 tons of waste liquid with elevator pump, the quality of wherein arsenic is dense
Degree is 70mg/L.
The H for adding 0.0035%wt is added toward 1# reactive tanks2O2, by As in waste water3+4h is aoxidized into As5+Afterwards.Add
The Fe that 0.025%wt ferric trichloride is dissolved out3+Stir 45min regulations pH=6.Opened after adding 0.0055%wt CaO
1# mixers react 35min in stirring at normal temperature.0.001%wt industrial diatomite is added, is pressed after stirring reaction 35min
Filter.
Pressure is adjusted between 15kg between 1# sheet frames are pressed into mud machine plate, can water flowing after pressurize 30min is constant.Check good pressure
Filter whether compression state, checked after opening 1# filter pressing pumps after pipeline valve, then open 1# press filtration circulating pump press filtrations.Pressure
The filtrate of filter clarification gets to No. 2 reactive tanks；
0.01%wt ferric trichloride stirring reaction 45min is added toward 2# reactive tanks.Add about 0.003%wt NaOH
Continue stirring reaction 30min after adjusting pH=6, add press filtration after the 500g prepared PAM stirrings 10min；By 2# press filtrations
The filtrate of machine press filtration clarification gets to 3# reactive tanks, sampling detection As contents, the water quality that the embodiment of the present invention handles to obtain is carried out
Inductively coupled plasma atomic emission detects, the results showed that, handling As contents in obtained water quality through the embodiment of the present invention 2 is
0.35mg/L。
Embodiment 3
GaAs collecting pit waste water lifting can extremely be filled to the 1# reactive tanks of 30 tons of waste liquid with elevator pump, the quality of wherein arsenic is dense
Degree is 80mg/L.
The H for adding 0.004%wt is added toward 1# reactive tanks2O2, by As in waste water3+4h is aoxidized into As5+Afterwards.Add 0.03%
The Fe that wt bodied ferric sulfate is dissolved out3+Stir 40min regulations pH=5.1# stirrings are opened after adding 0.006%wt CaO
Machine reacts 40min in stirring at normal temperature.0.0015%wt industrial diatomite is added, press filtration is carried out after stirring reaction 30min.
Pressure is adjusted between 15kg between 1# sheet frames are pressed into mud machine plate, can water flowing after pressurize 30min is constant.Check good pressure
Filter whether compression state, checked after opening 1# filter pressing pumps after pipeline valve, then open 1# press filtration circulating pump press filtrations.Pressure
The filtrate of filter clarification gets to No. 2 reactive tanks；
0.01%wt bodied ferric sulfate stirring reaction 40min is added toward 2# reactive tanks.Add about 0.003%wt's
NaOH continues stirring reaction 25min after adjusting pH=6, adds press filtration after the 500g prepared PAM stirrings 10min；By 2#
The filtrate of filter press press filtration clarification gets to 3# reactive tanks, sampling detection As contents, the water quality that the embodiment of the present invention is handled to obtain
Carry out inductively coupled plasma atomic emission detection, the results showed that, handle As in obtained water quality through the embodiment of the present invention 3 and contain
Measure as 0.35mg/L.
Embodiment 4
GaAs collecting pit waste water lifting can extremely be filled to the 1# reactive tanks of 30 tons of waste liquid with elevator pump, the quality of wherein arsenic is dense
Degree is 90mg/L.
The H for adding 0.003%wt is added toward 1# reactive tanks2O2, by As in waste water3+4h is aoxidized into As5+Afterwards.Add
The Fe that 0.020%wt bodied ferric sulfate is dissolved out3+Stir 50min regulations pH=6.Opened after adding 0.005%wt CaO
1# mixers react 40min in stirring at normal temperature.0.0013 ﹪ industrial diatomite is added, is pressed after stirring reaction 30min
Filter.
Pressure is adjusted between 15kg between 1# sheet frames are pressed into mud machine plate, can water flowing after pressurize 30min is constant.Check good pressure
Filter whether compression state, checked after opening 1# filter pressing pumps after pipeline valve, then open 1# press filtration circulating pump press filtrations.Pressure
The filtrate of filter clarification gets to No. 2 reactive tanks；
0.01 ﹪ wt bodied ferric sulfate stirring reaction 45min is added toward 2# reactive tanks.Add about 0.003 ﹪ wt's
NaOH continues stirring reaction 30min after adjusting pH=7, adds press filtration after the 500g prepared PAM stirrings 10min；By 2#
The filtrate of filter press press filtration clarification gets to 3# reactive tanks, sampling detection As contents, the water quality that the embodiment of the present invention is handled to obtain
Carry out inductively coupled plasma atomic emission detection, the results showed that, handle As in obtained water quality through the embodiment of the present invention 4 and contain
Measure as 0.45mg/L.
Embodiment 5
GaAs collecting pit waste water lifting can extremely be filled to the 1# reactive tanks of 30 tons of waste liquid with elevator pump, the quality of wherein arsenic is dense
Degree is 100mg/L.
The H for adding 0.003%wt is added toward 1# reactive tanks2O2, by As in waste water3+4h is aoxidized into As5+Afterwards.Add
The Fe that 0.023%wt ferric trichloride is dissolved out3+Stir 40min regulations pH=5.1# is opened after adding 0.005%wt CaO
Mixer reacts 30min in stirring at normal temperature.0.001 ﹪ industrial diatomite is added, press filtration is carried out after stirring reaction 30min.
Pressure is adjusted between 15kg between 1# sheet frames are pressed into mud machine plate, can water flowing after pressurize 30min is constant.Check good pressure
Filter whether compression state, checked after opening 1# filter pressing pumps after pipeline valve, then open 1# press filtration circulating pump press filtrations.Pressure
The filtrate of filter clarification gets to No. 2 reactive tanks；
0.01%wt ferric trichloride stirring reaction 40min is added toward 2# reactive tanks.Add about 0.003%wt NaOH
Continue stirring reaction 30min after adjusting pH=8, add press filtration after the 500g prepared PAM stirrings 10min；By 2# press filtrations
The filtrate of machine press filtration clarification gets to 3# reactive tanks, sampling detection As contents, the water quality that the embodiment of the present invention handles to obtain is carried out
Inductively coupled plasma atomic emission detects, the results showed that, handling As contents in obtained water quality through the embodiment of the present invention 5 is
0.4mg/L。
Embodiment 6
GaAs collecting pit waste water lifting can extremely be filled to the 1# reactive tanks of 30 tons of waste liquid with elevator pump, the quality of wherein arsenic is dense
Degree is 100mg/L.
The H for adding 0.003%wt is added toward 1# reactive tanks2O2, add the Fe that 0.023%wt ferric trichloride is dissolved out3 +, regulation pH=5, add 0.005%wt CaO, add 0.001 ﹪ industrial diatomite, pressed after stirring reaction 30min
Filter.
Pressure is adjusted between 15kg between 1# sheet frames are pressed into mud machine plate, can water flowing after pressurize 30min is constant.Check good pressure
Filter whether compression state, checked after opening 1# filter pressing pumps after pipeline valve, then open 1# press filtration circulating pump press filtrations.Pressure
The filtrate of filter clarification gets to No. 2 reactive tanks；
0.01%wt ferric trichloride is added toward 2# reactive tanks, the NaOH for adding about 0.003%wt adjusts pH=8, adds
Press filtration after the 500g prepared PAM stirrings 10min；The filtrate clarified by the press filtration of 2# filter presses gets to 3# reactive tanks, sampling inspection
As contents are surveyed, the water quality that the embodiment of the present invention handles to obtain are subjected to inductively coupled plasma atomic emission detection, as a result table
Bright, it is 10mg/L to handle As contents in obtained water quality through the embodiment of the present invention 6.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of processing method of arsenic-containing waste water, including：
A1) by waste water and hydrogen peroxide hybrid reaction, the first reaction solution is obtained；
A2) first reaction solution is mixed with ferric iron source compound, adjusts pH value, obtains the second reaction solution；The regulation
PH value is regulation pH value to 4.5~5.5；
A3) second reaction solution is mixed with calcium oxide, diatomite, press filtration, obtains filtrate；
B) by the filtrate and the second reaction material hybrid reaction, press filtration, processed waste water is obtained；Second reaction material includes three
Valency Fe source compound and polyacrylamide.
2. processing method according to claim 1, it is characterised in that the step a1) in the quality of waste water and hydrogen peroxide
Than for 100:0.002~0.004.
3. processing method according to claim 1, it is characterised in that the step a1) reaction time be 4~6h.
4. processing method according to claim 1, it is characterised in that the step a2) waste water and ferric iron source compound
Mass ratio be 100:0.020~0.030.
5. processing method according to claim 1, it is characterised in that the ferric iron source compound is selected from bodied ferric sulfate
With the one or more in ferric trichloride.
6. processing method according to claim 1, it is characterised in that the step a3) it is waste water and calcium oxide, diatomaceous
Mass ratio is 100:(0.004~0.006):(0.0005~0.0015).
7. processing method according to claim 1, it is characterised in that the step B) include：
Mixed by the filtrate and ferric iron source compound hybrid reaction, regulation pH value, with polyacrylamide, press filtration, must everywhere
Waste water after reason.
8. processing method according to claim 7, it is characterised in that the regulation pH value is regulation pH value to 6~9.
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