CN110251878A - A kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration - Google Patents
A kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration Download PDFInfo
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Abstract
The invention discloses a kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration.The technique is by sizing mixing, oxidant, ferrous salt, quick lime and each step of thermophilic iron-reducing bacterium and sequence cooperate, finally the polymetallic arsenic sulfide slag of high concentration can effectively be handled, quick lime step is especially added and thermophilic iron-reducing bacterium is added and cooperates, quick lime can remove the part heavy metal in arsenic sulfide slag, also suitable environment can be built for subsequent thermophilic iron-reducing bacterium simultaneously, improve treatment effect.
Description
Technical field
The invention belongs to arsenic sulfide slag processing technology fields, and in particular to one kind is used for the polymetallic arsenic sulfide slag of high concentration
Treatment process.
Background technique
There are arsenic in Non-ferrous minerals and Phosphate minerals, arsenic enters flue gas and waste residue during non-ferrous metal pyrometallurgical smelting
In, part arsenic is recovered in flue gas, and remaining arsenic is converted into arsenic sulfide slag.Arsenic is in phosphating process also converted into arsenones
Slag.It if these arsenic sulfide slags are untreated, can be further oxided in the natural environment, and arsenic is discharged into environment water or soil
In earth, environmental pollution is ultimately caused.
Currently, the processing mode of arsenic sulfide slag mainly has solidification stockpiling, pyrogenic attack and wet-treating etc., solidify stockpiling method
It is mainly admixed with cement and arsenic slag, forms solidified body stockpiling.But cured arsenones Leaching is generally unattainable storage
It is required that while need to consume a large amount of cement, increase-volume amount is big, and arsenic sulfide slag can not be effectively treated at present.Pyrogenic attack is will to vulcanize
Arsenic slag puts into rotary kiln, so that arsenic is volatized into flue gas in the form of arsenic trioxide at high temperature, is returned after cooling by dust collecting system
It receives, which stablizes, but there are flue gas dust collections to be not thorough, and the problem of causing containing arsenic gas and smoke contamination, recycles simultaneously
The arsenic trioxide market demand it is small, storage risk it is high the problems such as.
Relative to pyrogenic attack, wet-treating has the advantages that non-exhaust emission, current main method have copper sulfate method,
Ferric sulphate method, oxygen leaching method, common ground is all that the arsenic in arsenic sulfide slag is first transferred to liquid phase, then again with the shape of white arsenic
Formula recycling, or it is converted into stable matter containing arsenic stockpiling.
But in arsenic sulfide slag polymetallic in face of high concentration, above-mentioned wet-treating mode is during handling arsenic
It is to be improved in terms of arsenic removal effect and other metal removal effects under the interference that will receive other metal ions.
Summary of the invention
For this purpose, it is of the invention the technical problem to be solved is that the treatment process of existing arsenic sulfide slag in arsenic removal effect and
Defect to be improved in terms of other metal removal effects, and then provide a kind of for the polymetallic arsenic sulfide slag of high concentration
Treatment process.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
Treatment process provided by the present invention for the polymetallic arsenic sulfide slag of high concentration, includes the following steps:
(1) it sizes mixing to solid arsenic sulfide slag, obtains arsenic sulfide slag slurries；
(2) oxidant is added into arsenic sulfide slag slurries, carries out the first reaction；
(3) ferrous salt is added in the arsenic sulfide slag slurries after Xiang Suoshu oxidation processes, carries out the second reaction；
(4) quick lime into step (3) treated arsenic sulfide slag slurries, carries out third reaction；
(5) thermophilic iron-reducing bacterium is added into step (4) treated arsenic sulfide slag slurries.
Further, the oxidant is hydrogen peroxide, the volume of the solid arsenic sulfide slag in the hydrogen peroxide and step (1)
Than for (10-20): 100；
The temperature of first reaction is 20-30 DEG C, time 2-4h.
Further, the ferrous salt is ferrous sulfate and/or ferrous nitrate, the ferrous salt and consolidating in step (1)
The mass ratio of body arsenic sulfide slag is (10-20): 100；
The temperature of second reaction is 20-30 DEG C, time 1-3h.
Further, the mass ratio of the quick lime and the solid arsenic sulfide slag in step (1) is (10-20): 100；
The temperature of the third reaction is 30-40 DEG C, time 30-70min.
Further, the thermophilic iron-reducing bacterium is sulfobacillus thermosulfidooxidans (Sulfobacillus
Thermosulfidooxidans, number: BNCC173428), ferrous oxide hook end spirillum (Leptospirillum
Ferrooxidans) or thermophilic irony bacterium (Ferroplasma thermophilium, number BNCC173662), acidophilus aoxidize
At least one of ferrous Thiobacillus.
Further, the additive amount of the thermophilic iron-reducing bacterium is to make step (4) treated thermophilic iron in arsenic sulfide slag slurries
The number of reducing bacteria is (30-45) × 107A/mL；
The pH of rate-determining steps (4) treated arsenic sulfide slag slurries is 3.5-4.2, temperature is 20-28 DEG C.
Further, described to size mixing as the solid arsenic sulfide slag and water to be mixed, form arsenic sulfide slag slurries, control
The mass ratio of solid arsenic sulfide slag and water processed is (50-80): (30-100).
Further, the moisture content of the solid arsenic sulfide slag is 30-40wt%, pH 1.5-2.6.
Further, the processing time of thermophilic iron-reducing bacterium is -1.5 days 1 day.
Further, the Leaching of As (in terms of total As) is 10000-12000mg/L, Zn in the solid arsenic sulfide slag
The Leaching of (in terms of total Zn) is that the Leaching of 1500-2500mg/L, Cu (in terms of total Cu) are 800-1200mg/L, Pb
The Leaching of (in terms of total Pb) is that the Leaching of 800-1200mg/L, Cd (in terms of total Cd) are 200-400mg/L.
Compared with prior art, the invention has the following beneficial effects:
(1) treatment process provided by the present invention for the polymetallic arsenic sulfide slag of high concentration first vulcanizes solid
Arsenic slag is sized mixing, and arsenic sulfide slag slurries are obtained；Secondly oxidant is added into arsenic sulfide slag slurries, carries out the first reaction；Again
Ferrous salt is added into the arsenic sulfide slag slurries after the oxidation processes by person, carries out the second reaction；Then to previous step process
Quick lime in arsenic sulfide slag slurries afterwards carries out third reaction；Finally add into the arsenic sulfide slag slurries after previous step process
Enter thermophilic iron-reducing bacterium.It is cooperated, the polymetallic arsenic sulfide slag of high concentration can finally be carried out effective by each step and sequence
Processing, especially addition quick lime step and thermophilic iron-reducing bacterium be added cooperate, quick lime can remove in arsenic sulfide slag
Part heavy metal, while also suitable environment can be built for subsequent thermophilic iron-reducing bacterium, improve treatment effect.
(2) treatment process provided by the present invention for the polymetallic arsenic sulfide slag of high concentration, by joining in each step
Number control, helps to improve the treatment effect to the polymetallic arsenic sulfide slag of high concentration.
Specific embodiment
There is provided following embodiments is to preferably further understand the present invention, it is not limited to the best embodiment party
Formula is not construed as limiting the contents of the present invention and protection scope, anyone under the inspiration of the present invention or by the present invention and its
The feature of his prior art is combined and any and identical or similar product of the present invention for obtaining, all falls within of the invention
Within protection scope.
Specific experiment step or condition person are not specified in embodiment, according to the literature in the art described routine experiment
The operation of step or condition can carry out.Reagents or instruments used without specified manufacturer, being can be by commercially available acquisition
Conventional reagent product.
Embodiment 1
The present embodiment provides a kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration, include the following steps:
(1) it is mixed to by solid arsenic sulfide slag and water, forms arsenic sulfide slag slurries, control solid arsenic sulfide slag and water
Mass ratio be 70:60, wherein the moisture content of solid arsenic sulfide slag be 35wt%, pH 2；
(2) hydrogen peroxide, the body of the solid arsenic sulfide slag in the hydrogen peroxide and step (1) are added into arsenic sulfide slag slurries
Product is than being 15:100, the oxidation reaction 3h at 25 DEG C；
(3) ferrous sulfate is added in the arsenic sulfide slag slurries after Xiang Suoshu oxidation processes, in the ferrous salt and step (1)
Solid arsenic sulfide slag mass ratio be 15:100, react 2h at 25 DEG C；
(4) quick lime into step (3) treated arsenic sulfide slag slurries, the solid in quick lime and step (1) vulcanize
The mass ratio of arsenic slag is 15:100, reacts 45min at 35 DEG C；
(5) pH of rate-determining steps (4) treated arsenic sulfide slag slurries is 3.8, temperature is 25 DEG C, is handled to step (4)
Thermophilic iron-reducing bacterium is added in arsenic sulfide slag slurries afterwards, thermophilic iron-reducing bacterium is sulfobacillus thermosulfidooxidans (Sulfobacillus
Thermosulfidooxidans, number: BNCC173428)；The additive amount of the thermophilic iron-reducing bacterium is after handling step (4)
Arsenic sulfide slag slurries in thermophilic iron-reducing bacterium number be 40 × 107A/mL, the processing time of thermophilic iron-reducing bacterium are to receive after 1 day
Arsenic sulfide slag after the completion of collection processing；
It is tested using HJ/T 299-2007, after tested, the Leaching of As (in terms of total As) is in solid arsenic sulfide slag
The Leaching of 11000mg/L, Zn (in terms of total Zn) be 2000mg/L, Cu (in terms of total Cu) Leaching be 1000mg/L,
The Leaching of Pb (in terms of total Pb) is that the Leaching of 900mg/L, Cd (in terms of total Cd) are 300mg/L；
And the Leaching of As (in terms of total As) is < 2.5mg/L, Zn (with total Zn in the arsenic sulfide slag after the completion of handling
Meter) Leaching be < 10mg/L, the Leaching of Cu (in terms of total Cu) is < 10mg/L, the leaching of Pb (in terms of total Pb) is malicious
Property is < 5mg/L, the Leaching of Cd (in terms of total Cd) is < 0.5mg/L.
Embodiment 2
The present embodiment provides a kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration, include the following steps:
(1) it is mixed to by solid arsenic sulfide slag and water, forms arsenic sulfide slag slurries, control solid arsenic sulfide slag and water
Mass ratio be 50:100, wherein the moisture content of solid arsenic sulfide slag be 30wt%, pH 2.6；
(2) hydrogen peroxide, the body of the solid arsenic sulfide slag in the hydrogen peroxide and step (1) are added into arsenic sulfide slag slurries
Product is than being 20:100, the oxidation reaction 4h at 20 DEG C；
(3) ferrous nitrate is added in the arsenic sulfide slag slurries after Xiang Suoshu oxidation processes, in the ferrous salt and step (1)
Solid arsenic sulfide slag mass ratio be 10:100, react 3h at 30 DEG C；
(4) quick lime into step (3) treated arsenic sulfide slag slurries, the solid in quick lime and step (1) vulcanize
The mass ratio of arsenic slag is 20:100, reacts 30min at 40 DEG C；
(5) pH of rate-determining steps (4) treated arsenic sulfide slag slurries is 3.5, temperature is 28 DEG C, is handled to step (4)
Thermophilic iron-reducing bacterium is added in arsenic sulfide slag slurries afterwards, thermophilic iron-reducing bacterium is thermophilic irony bacterium (Ferroplasma
Thermophilium, number BNCC173662)；The additive amount of the thermophilic iron-reducing bacterium is to make step (4) treated arsenones
The number of thermophilic iron-reducing bacterium is 30 × 10 in dreg slurry7A/mL, the arsenic sulfide slag after the completion of collection processing；
It is tested using HJ/T 299-2007, after tested, the Leaching of As (in terms of total As) is in solid arsenic sulfide slag
The Leaching of 12000mg/L, Zn (in terms of total Zn) are that the Leaching of 2500mg/L, Cu (in terms of total Cu) are 800mg/L, Pb
The Leaching of (in terms of total Pb) is that the Leaching of 1200mg/L, Cd (in terms of total Cd) are 200mg/L；And after the completion of handling
In arsenic sulfide slag the Leaching of As (in terms of total As) be < 2.5mg/L, the Leaching of Zn (in terms of total Zn) be < 10mg/L,
The Leaching of Cu (in terms of total Cu) is < 10mg/L, the Leaching of Pb (in terms of total Pb) is < 5mg/L, Cd (in terms of total Cd)
Leaching be < 0.5mg/L.
Embodiment 3
The present embodiment provides a kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration, include the following steps:
(1) it is mixed to by solid arsenic sulfide slag and water, forms arsenic sulfide slag slurries, control solid arsenic sulfide slag and water
Mass ratio be 80:30, wherein the moisture content of solid arsenic sulfide slag be 40wt%, pH 1.5；
(2) hydrogen peroxide, the body of the solid arsenic sulfide slag in the hydrogen peroxide and step (1) are added into arsenic sulfide slag slurries
Product is than being 10:100, the oxidation reaction 2h at 30 DEG C；
(3) ferrous sulfate and/or ferrous nitrate, the ferrous iron are added in the arsenic sulfide slag slurries after Xiang Suoshu oxidation processes
The mass ratio of solid arsenic sulfide slag in salt and step (1) is 20:100, reacts 1h at 20 DEG C；
(4) quick lime into step (3) treated arsenic sulfide slag slurries, the solid in quick lime and step (1) vulcanize
The mass ratio of arsenic slag is 10:100, reacts 70min at 30 DEG C；
(5) pH of rate-determining steps (4) treated arsenic sulfide slag slurries is 4.2, temperature is 20 DEG C, is handled to step (4)
Thermophilic iron-reducing bacterium is added in arsenic sulfide slag slurries afterwards, thermophilic iron-reducing bacterium is ferrous oxide hook end spirillum
(Leptospirillum ferrooxidans)；The additive amount of the thermophilic iron-reducing bacterium is to make step (4) treated arsenones
The number of thermophilic iron-reducing bacterium is 45 × 10 in dreg slurry7A/mL, the arsenic sulfide slag after the completion of collection processing；
It is tested using HJ/T 299-2007, after tested, the Leaching of As (in terms of total As) is in solid arsenic sulfide slag
The Leaching of 10000mg/L, Zn (in terms of total Zn) be 1500mg/L, Cu (in terms of total Cu) Leaching be 1200mg/L,
The Leaching of Pb (in terms of total Pb) is that the Leaching of 800mg/L, Cd (in terms of total Cd) are 400mg/L；And after the completion of handling
Arsenic sulfide slag in As (in terms of total As) Leaching be < 2.5mg/L, the Leaching of Zn (in terms of total Zn) is < 10mg/
L, the Leaching of Cu (in terms of total Cu) is < 10mg/L, the Leaching of Pb (in terms of total Pb) is < 5mg/L, Cd is (with total Cd
Meter) Leaching be < 0.5mg/L.
Embodiment 4
The present embodiment provides a kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration, include the following steps:
(1) it is mixed to by solid arsenic sulfide slag and water, forms arsenic sulfide slag slurries, control solid arsenic sulfide slag and water
Mass ratio be 60:70, wherein the moisture content of solid arsenic sulfide slag be 32wt%, pH 1.9；
(2) hydrogen peroxide, the body of the solid arsenic sulfide slag in the hydrogen peroxide and step (1) are added into arsenic sulfide slag slurries
Product is than being 18:100, the oxidation reaction 3.5h at 22 DEG C；
(3) ferrous sulfate and/or ferrous nitrate, the ferrous iron are added in the arsenic sulfide slag slurries after Xiang Suoshu oxidation processes
The mass ratio of solid arsenic sulfide slag in salt and step (1) is 12:100, reacts 1.5h at 27 DEG C；
(4) quick lime into step (3) treated arsenic sulfide slag slurries, the solid in quick lime and step (1) vulcanize
The mass ratio of arsenic slag is 16:100, reacts 48min at 33 DEG C；
(5) pH of rate-determining steps (4) treated arsenic sulfide slag slurries is 3.8, temperature is 23 DEG C, is handled to step (4)
Thermophilic iron-reducing bacterium is added in arsenic sulfide slag slurries afterwards, thermophilic iron-reducing bacterium is sulfobacillus thermosulfidooxidans (Sulfobacillus
Thermosulfidooxidans, number: BNCC173428)；The additive amount of the thermophilic iron-reducing bacterium is after handling step (4)
Arsenic sulfide slag slurries in thermophilic iron-reducing bacterium number be 35 × 107A/mL, the arsenic sulfide slag after the completion of collection processing；
It is tested using HJ/T 299-2007, after tested, the Leaching of As (in terms of total As) is in solid arsenic sulfide slag
The Leaching of 10085mg/L, Zn (in terms of total Zn) are that the Leaching of 2200mg/L, Cu (in terms of total Cu) are 900mg/L, Pb
The Leaching of (in terms of total Pb) is that the Leaching of 1000mg/L, Cd (in terms of total Cd) are 250mg/L；And after the completion of handling
In arsenic sulfide slag the Leaching of As (in terms of total As) be < 2.5mg/L, the Leaching of Zn (in terms of total Zn) be < 10mg/L,
The Leaching of Cu (in terms of total Cu) is < 10mg/L, the Leaching of Pb (in terms of total Pb) is < 5mg/L, Cd (in terms of total Cd)
Leaching be < 0.5mg/L.
Embodiment 5
The present embodiment provides a kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration, include the following steps:
(1) it is mixed to by solid arsenic sulfide slag and water, forms arsenic sulfide slag slurries, control solid arsenic sulfide slag and water
Mass ratio be 78:54, wherein the moisture content of solid arsenic sulfide slag be 31wt%, pH 2.1；
(2) hydrogen peroxide, the body of the solid arsenic sulfide slag in the hydrogen peroxide and step (1) are added into arsenic sulfide slag slurries
Product is than being 11:100, the oxidation reaction 2.4h at 28 DEG C；
(3) ferrous sulfate and/or ferrous nitrate, the ferrous iron are added in the arsenic sulfide slag slurries after Xiang Suoshu oxidation processes
The mass ratio of solid arsenic sulfide slag in salt and step (1) is 18:100, reacts 2.1h at 23 DEG C；
(4) quick lime into step (3) treated arsenic sulfide slag slurries, the solid in quick lime and step (1) vulcanize
The mass ratio of arsenic slag is 11:100, reacts 31min at 38 DEG C；
(5) pH of rate-determining steps (4) treated arsenic sulfide slag slurries is 3.2, temperature is 26 DEG C, is handled to step (4)
Thermophilic iron-reducing bacterium is added in arsenic sulfide slag slurries afterwards, thermophilic iron-reducing bacterium is thermophilic irony bacterium (Ferroplasma
Thermophilium, number BNCC173662)；The additive amount of the thermophilic iron-reducing bacterium is to make step (4) treated arsenones
The number of thermophilic iron-reducing bacterium is 42 × 10 in dreg slurry7A/mL, the arsenic sulfide slag after the completion of collection processing；
It is tested using HJ/T 299-2007, after tested, the Leaching of As (in terms of total As) is in solid arsenic sulfide slag
The Leaching of 11048mg/L, Zn (in terms of total Zn) are that the Leaching of 1600mg/L, Cu (in terms of total Cu) are 800mg/L, Pb
The Leaching of (in terms of total Pb) is that the Leaching of 900mg/L, Cd (in terms of total Cd) are 320mg/L；And after the completion of handling
In arsenic sulfide slag the Leaching of As (in terms of total As) be < 2.5mg/L, the Leaching of Zn (in terms of total Zn) be < 10mg/L,
The Leaching of Cu (in terms of total Cu) is < 10mg/L, the Leaching of Pb (in terms of total Pb) is < 5mg/L, Cd (in terms of total Cd)
Leaching be < 0.5mg/L.
Comparative example 1
This comparative example provides a kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration.With embodiment 1, uniquely not
It is with place: without adding quick lime step in this comparative example.
It is tested using HJ/T 299-2007, after tested, the leaching of As (in terms of total As) in the arsenic sulfide slag after the completion of handling
Toxicity is > 100mg/L, the Leaching of Zn (in terms of total Zn) is > 50mg/L, the Leaching of Cu (in terms of total Cu) is >
The Leaching of 20mg/L, Pb (in terms of total Pb) are > 15mg/L, the Leaching of Cd (in terms of total Cd) is > 12mg/L.
Comparative example 2
This comparative example provides a kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration.With embodiment 1, uniquely not
It is with place: without adding thermophilic iron-reducing bacterium step in this comparative example.
It is tested using HJ/T 299-2007, after tested, the leaching of As (in terms of total As) in the arsenic sulfide slag after the completion of handling
Toxicity is > 120mg/L, the Leaching of Zn (in terms of total Zn) is > 60mg/L, the Leaching of Cu (in terms of total Cu) is >
The Leaching of 25mg/L, Pb (in terms of total Pb) are > 20mg/L, the Leaching of Cd (in terms of total Cd) is > 18mg/L.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (9)
1. a kind for the treatment of process for the polymetallic arsenic sulfide slag of high concentration, includes the following steps:
(1) it sizes mixing to solid arsenic sulfide slag, obtains arsenic sulfide slag slurries；
(2) oxidant is added into arsenic sulfide slag slurries, carries out the first reaction；
(3) ferrous salt is added in the arsenic sulfide slag slurries after Xiang Suoshu oxidation processes, carries out the second reaction；
(4) quick lime into step (3) treated arsenic sulfide slag slurries, carries out third reaction；
(5) thermophilic iron-reducing bacterium is added into step (4) treated arsenic sulfide slag slurries.
2. treatment process according to claim 1, which is characterized in that the oxidant be hydrogen peroxide, the hydrogen peroxide with
The volume ratio of solid arsenic sulfide slag in step (1) is (10-20): 100；
The temperature of first reaction is 20-30 DEG C, time 2-4h.
3. treatment process according to claim 1 or 2, which is characterized in that the ferrous salt is ferrous sulfate and/or nitric acid
The mass ratio of ferrous iron, the ferrous salt and the solid arsenic sulfide slag in step (1) is (10-20): 100；
The temperature of second reaction is 20-30 DEG C, time 1-3h.
4. treatment process according to any one of claim 1-3, which is characterized in that in the quick lime and step (1)
Solid arsenic sulfide slag mass ratio be (10-20): 100；
The temperature of the third reaction is 30-40 DEG C, time 30-70min.
5. treatment process described in any one of -4 according to claim 1, which is characterized in that the thermophilic iron-reducing bacterium is mesophilic sulphur
At least one of oxidation of sulfureted bacillus, ferrous oxide hook end spirillum or thermophilic irony bacterium, Acidithiobacillus ferrooxidans strain GF.
6. treatment process according to claim 5, which is characterized in that the additive amount of the thermophilic iron-reducing bacterium is to make step
(4) number of thermophilic iron-reducing bacterium is (30-45) × 10 in treated arsenic sulfide slag slurries7A/mL；
The pH of rate-determining steps (4) treated arsenic sulfide slag slurries is 3.5-4.2, temperature is 20-28 DEG C.
7. treatment process according to claim 1 to 6, which is characterized in that described to size mixing as by the solid sulfur
Change arsenic slag and water be mixed, form arsenic sulfide slag slurries, the mass ratio for controlling solid arsenic sulfide slag and water is (50-80):
(30-100)。
8. treatment process described in any one of -7 according to claim 1, which is characterized in that the solid arsenic sulfide slag it is aqueous
Rate is 30-40wt%, pH 1.5-2.6.
9. treatment process according to claim 1 to 8, which is characterized in that As in the solid arsenic sulfide slag
The Leaching of (in terms of total As) be 10000-12000mg/L, Zn (in terms of total Zn) Leaching be 1500-2500mg/L,
The Leaching of Cu (in terms of total Cu) is that the Leaching of 800-1200mg/L, Pb (in terms of total Pb) are 800-1200mg/L, Cd
The Leaching of (in terms of total Cd) is 200-400mg/L.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920704A (en) * | 2014-04-24 | 2014-07-16 | 杭州大地环保工程有限公司 | Arsenic-polluted soil remediation method |
| CN104609573A (en) * | 2015-02-03 | 2015-05-13 | 中国科学院过程工程研究所 | Method for treating acid waste water containing arsenic |
| CN105753209A (en) * | 2016-03-03 | 2016-07-13 | 湖州欧美新材料有限公司 | Arsenic containing wastewater treatment method |
| CN106698821A (en) * | 2016-12-20 | 2017-05-24 | 中南大学 | Method for treating wastewater containing trivalent arsenic by utilizing microorganisms |
| CN107350271A (en) * | 2017-08-11 | 2017-11-17 | 航天凯天环保科技股份有限公司 | A kind of method of arsenic-containing waste residue stabilization processes |
| CN108164030A (en) * | 2017-12-27 | 2018-06-15 | 中国科学院过程工程研究所 | The process for fixation of arsenic in a kind of arsenic containing solution |
| CN109761390A (en) * | 2019-01-10 | 2019-05-17 | 昆明理工大学 | A kind of innoxious Arsenic fixation method of industry arsenic-containing waste water |
-
2019
- 2019-05-22 CN CN201910430744.XA patent/CN110251878A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920704A (en) * | 2014-04-24 | 2014-07-16 | 杭州大地环保工程有限公司 | Arsenic-polluted soil remediation method |
| CN104609573A (en) * | 2015-02-03 | 2015-05-13 | 中国科学院过程工程研究所 | Method for treating acid waste water containing arsenic |
| CN105753209A (en) * | 2016-03-03 | 2016-07-13 | 湖州欧美新材料有限公司 | Arsenic containing wastewater treatment method |
| CN106698821A (en) * | 2016-12-20 | 2017-05-24 | 中南大学 | Method for treating wastewater containing trivalent arsenic by utilizing microorganisms |
| CN107350271A (en) * | 2017-08-11 | 2017-11-17 | 航天凯天环保科技股份有限公司 | A kind of method of arsenic-containing waste residue stabilization processes |
| CN108164030A (en) * | 2017-12-27 | 2018-06-15 | 中国科学院过程工程研究所 | The process for fixation of arsenic in a kind of arsenic containing solution |
| CN109761390A (en) * | 2019-01-10 | 2019-05-17 | 昆明理工大学 | A kind of innoxious Arsenic fixation method of industry arsenic-containing waste water |
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