CN108314162A - The method for removing potassium of the aqueous solution containing sylvite under a kind of acidic environment - Google Patents
The method for removing potassium of the aqueous solution containing sylvite under a kind of acidic environment Download PDFInfo
- Publication number
- CN108314162A CN108314162A CN201810341247.8A CN201810341247A CN108314162A CN 108314162 A CN108314162 A CN 108314162A CN 201810341247 A CN201810341247 A CN 201810341247A CN 108314162 A CN108314162 A CN 108314162A
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- CN
- China
- Prior art keywords
- potassium
- tartaric acid
- sylvite
- sediment
- aqueous solution
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
Abstract
The invention discloses a kind of method for removing potassium of the aqueous solution containing sylvite under acidic environment.Consolidated inspiration this method of salt phenomenon by the resistance to potassium plant of water planting first by plant, its root of post analysis composition, determine the composition of solid/de- potassium agent, then remove sylvite using the method for sedimentation.This method includes the reagent that tartaric acid is added or can generate tartaric acid, while controlling the pending temperature containing potassium solution, you can obtains the sediment containing potassium.The characteristics of this method is the addition and the pending temperature containing potassium solution of control by control tartaric acid or the reagent that can generate tartaric acid, can reduce the potassium content in aqueous solution containing sylvite.Raw materials used economical and easily available, equipment is simple, does not introduce harmful element into system, and the precipitation isolated also is valuable chemical raw material.The technique can be widely applied to the processing for the waste water containing sylvite that the fields such as fine chemistry industry, biochemical industry, papermaking are discharged.
Description
【Technical field】
The present invention relates to the field of waste water treatment of Environmental Technology, the aqueous solution containing sylvite removes under especially a kind of acidic environment
Potassium method.
【Background technology】
With the development of industry, the total emission volumn of industrial wastewater sharply increases.Fine chemistry industry, biochemical industry, papermaking, process hides
Often discharge brine waste in equal fields.The salting liquid of high concentration has inhibition and toxic action to biology, and makes soil salt marsh
Change, to endanger environment.In addition, in many production technologies, the process water of recycling due to salt continuous accumulation, salt content compared with
Height easily occurs crystallizing or precipitating, blocking pipeline, increases heat transfer or resistance to mass tranfer, influences the stability of technique.
For a long time, China's limitation not stringent to the content of inorganic salts in discharge water, with environmental protection dynamics
Reinforce, discharging the content of inorganic salts in water will be severely restricted.
Compare the common physics of processing brine waste, chemistry and biological three classes method, although potassium ion is the important of biology
Ingredient, but the content in organism (such as plant) is relatively low, thus the biology of unit mass can be fixed potassium amount it is limited.Cause
This is compared to physics and method of chemical treatment, and biological treatment time when handling high potassium waste water is long, and efficiency is low.
UF membrane and evaporation-crystallisation are current main desalination process.Desalting technology based on UF membrane is more suitable for
The desalination of light salt brine, when salt concentration is higher, energy consumption, cost sharply increase.And the strong brine obtained after handling still waits locating
Reason.In addition, technical equipment higher price needed for UF membrane, investment is larger.And it will also generate considerable amount of waste water when film regeneration
Or organic solvent.And evaporation-crystallisation also needs to provide enough energy and keeps water vapor, energy consumption also larger.
【Invention content】
The purpose of the present invention is take into account Environmental compatibility while administering water pollution to avoid pollution transportation and secondary as possible
Pollution provides a kind of method for removing potassium of the aqueous solution containing sylvite under acidic environment.This method is including being added tartaric acid or can generate wine
The reagent of stone acid, while the temperature of pending solution is controlled, by standing, after precipitation, isolate sediment containing potassium.
Although the solid potassium amount of biology is limited, and time-consuming longer, the outstanding advantage of biological method is its Environmental compatibility.By
Inspiration of the plant to the sensibility of salt and its solid salt phenomenon, this method by the resistance to potassium plant of water planting first, its root of post analysis
Composition, and then determine the key component of de- potassium agent and parse the search procedure that plant consolidates potassium mechanism, propose that simulating plant consolidates salt mistake
" bionical " desalination process of journey.This method had not only used for reference the compatible advantage of environment of biological method, Gu but also accelerate biology it is de-/salt into
Journey.Its is raw materials used economical and easily available, and equipment is simple, does not introduce harmful element into system, and the sediment containing potassium separated is also
For valuable chemical raw material.
Technical scheme of the present invention
The method for removing potassium of the aqueous solution containing sylvite under a kind of acidic environment, under certain temperature, in the accessing pending water containing sylvite
Tartaric acid is added in solution or the reagent of tartaric acid can be generated, is then allowed to stand solution, precipitation is precipitated, is finally separating and is precipitated containing potassium
Object obtains acidic preflush fluid.The temperature is 0~40 DEG C, and preferably 5~25 DEG C, pH value is less than 7.
Sylvite of the present invention is one kind or their mixture in potassium chloride, potassium nitrate, potassium sulfate, potassium acetate.Wine
The molar ratio of stone acid and potassium in accessing pending water solution is 0.5~5：1.Using tartaric acid is added portionwise, and detach in time it is heavy containing potassium
Starch, until not generating precipitation.Obtained acidic preflush fluid after separation sediment containing potassium, can be added ammonia, calcium hydroxide or
The alkaline matters such as one kind or their mixture in magnesium hydroxide neutralize, or the acidic treatment obtained after separation sediment containing potassium
Liquid is further processed using traditional chemical industry operations such as concentration, removing sour gas.
The desalination method for the aqueous solution containing sylvite that the present invention develops can be used for administering waste water containing Potash Industry, mitigate and contain potassium
Inhibition and toxic action of the higher water quality of salt amount to biology, mitigate environmental pollution；Or reduce containing in circulation use technology water
Sylvite amount ensures the stabilization of production technology；Or recycling potassium resource.
The advantages of the present invention：
The present invention is based on nature self cleanings and the solid salt mechanism of biology, by being grown under high potassium concentration salt environment
The analysis of plant root determines the composition of solid/de- potassium agent, then removes potassium ion using the method for sedimentation.By the way that winestone is added
Acid or the reagent that tartaric acid can be generated, while solution temperature is controlled, it can effectively reduce the potassium content in solution.
The present invention has used for reference the advantage of biological method, and accelerates de- potassium process.Equipment is simple, and investment is small, raw materials used
It is economical and easily available, it is easy to operate, harmful element is not introduced into system, therefore be a kind of environmentally friendly treatment process.It isolates
Containing potassium precipitation also be valuable industrial chemicals, it is recyclable, take into account economy and environmental protection.The technique can be extensive
Processing applied to the waste water containing sylvite that the fields such as fine chemistry industry, biochemical industry, papermaking, process hides are discharged.
【Description of the drawings】
Fig. 1 is the XRD spectrum for handling chloride containing potassium solution gained sediment.
【Specific implementation mode】
Embodiment 1：
It at 35 DEG C and under strong stirring, is included in 15% (mass percent) KCl aqueous solutions in 100mL, 1.2g wine is added
Stone acid.After finishing, (saturation solubility of KCl is about 32g KCl/100g water at 15 DEG C) is stood at about 15 DEG C, until precipitation
It does not continue to increase, is filtered to remove sediment containing potassium.Sediment nearly weighs 1.5g.Through elemental analysis, K and C content are divided in sediment
Not Wei 20.8% and 24.9%, Cl content~0%.The XRD spectrum of the sediment is shown in attached drawing 1.
Obtained saliferous acid solution can be further processed by operations such as traditional desorption, absorption, distillations, and reaching recycling makes
Purpose.
Embodiment 2：
At 25 DEG C and under strong stirring, contain 20% (mass percent) KNO in 100mL3Aqueous solution in, for the first time first plus
Enter 1.2g tartaric acid.After finishing, (KNO at 20 DEG C is stood under room temperature (about 20 DEG C)3Saturation solubility be about 31.6g KNO3/
100g water), until precipitation does not continue to increase, it is filtered to remove sediment containing potassium.Sediment nearly weighs 2.0g.Through elemental analysis, sink
K and C content are respectively 21.2% and 24.7% in starch, and N content~0%.The XRD spectrum of the sediment is obtained with embodiment 1
The XRD spectrum of the precipitation arrived is closely similar (referring to attached drawing 1).
1.2g tartaric acid is added in the acid solution for removing the sediment containing potassium, repeats operation above, until no longer
Generate precipitation.Obtained acid solution is passed through ammonia to pH6~6.5, can be used as plant nutrition liquid.
Embodiment 3：
Under 40 DEG C and strong stirring, contain 10%K in 100mL2SO4Aqueous solution in, be added 1.2g tartaric acid.After finishing,
(K at 20 DEG C is stood at 20 DEG C2SO4Saturation solubility be about 11g K2SO4/ 100g water), until precipitation does not continue to increase,
It is filtered to remove sediment containing potassium.Sediment nearly weighs 1.6g.Through elemental analysis, the content of K and C is respectively 20.7% He in sediment
25.0%, S content~0%.The XRD spectrum of the XRD spectrum of the sediment and the precipitation that embodiment 1 obtains it is closely similar (referring to
Attached drawing 1).
1.2g tartaric acid is added in the acid solution for removing the sediment containing potassium, repeats operation above, until no longer
Generate precipitation.
Obtained sulfur-bearing acid solution can concentrate reuse by prior art；Or it is added in calcium hydroxide or magnesium hydroxide progress
And processing, it can be used as industrial chemicals after obtained calcium sulfate or magnesium sulfate is refined.
Embodiment 4：
At 10 DEG C, 20g anhydrous acetic acid potassium is dissolved in 100mL water, under strong stirring, 1.2g tartaric acid is first added.Add
Bi Hou stands (saturation solubility of potassium acetate is about 225g potassium acetates/100g water at 5 DEG C) at~5 DEG C, until precipitation is no longer
It continues growing, is filtered to remove sediment containing potassium.Sediment nearly weighs 1.2g.Through elemental analysis, the content of K and C is distinguished in sediment
For 20.8% and 25.1%.The XRD spectrum for the precipitation that the XRD spectrum of the sediment is obtained with embodiment 1 is closely similar (referring to attached
Fig. 1).
1.2g tartaric acid is added in the acid solution for removing the sediment containing potassium, repeats operation above, until no longer
Generate precipitation.
Obtain can to carry out concentration by prior art containing acetic acid solution refined, can be used as industrial chemicals.
Claims (9)
1. the method for removing potassium of the aqueous solution containing sylvite under a kind of acidic environment, it is characterised in that：Under certain temperature, containing sylvite
Tartaric acid is added in accessing pending water solution or the reagent of tartaric acid can be generated, is then allowed to stand solution, precipitation is precipitated, is finally separating and contains
Potassium sediment, obtains acidic preflush fluid.
2. according to the method for claim 1, it is characterised in that the accessing pending water solution temperature of the method processing procedure is 0
~40 DEG C.
3. according to the method for claim 2, it is characterised in that the accessing pending water solution temperature is 5~25 DEG C.
4. according to the method for claim 1, it is characterised in that the sylvite is potassium chloride, potassium nitrate, potassium sulfate, potassium acetate
In one kind or their mixture.
5. according to the method for claim 1, it is characterised in that the molar ratio of tartaric acid and potassium in accessing pending water solution is 0.5
~5：1.
6. according to the method for claim 1, it is characterised in that tartaric acid is added portionwise, and detaches sediment containing potassium in time,
Until not generating precipitation.
7. according to the method for claim 1, it is characterised in that the acidic preflush fluid that separation obtains after sediment containing potassium adds
Enter alkaline matter neutralization.
8. according to the method for claim 7, it is characterised in that the alkaline matter of addition is ammonia, calcium hydroxide or hydroxide
One kind in magnesium or their mixture.
9. according to the method for claim 1, it is characterised in that the acidic preflush fluid that separation obtains after sediment containing potassium, it can
It is further processed using the traditional operation of concentration, removing sour gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810341247.8A CN108314162A (en) | 2018-04-17 | 2018-04-17 | The method for removing potassium of the aqueous solution containing sylvite under a kind of acidic environment |
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| CN201810341247.8A CN108314162A (en) | 2018-04-17 | 2018-04-17 | The method for removing potassium of the aqueous solution containing sylvite under a kind of acidic environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111099709A (en) * | 2019-12-24 | 2020-05-05 | 珠海广睿汇利发展有限公司 | Seawater potassium removal method |
| CN112707739A (en) * | 2020-12-30 | 2021-04-27 | 辽宁科技大学 | Method for removing potassium chloride in bricks used in cement kiln |
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| NL179489B (en) * | 1952-07-01 | Eni Ente Naz Idrocarb | PROCEDURE FOR THE REMOVAL OF POTASSIUM SALTS FROM A RESIDUE OF THE DISTILLATION OF FERMENTED SUGAR BEET MOLASSES. | |
| CN1174668A (en) * | 1997-09-20 | 1998-03-04 | 广西大学 | Method for producing fowl and animal fodder from depossified molases alcohol waste liquid of sugar-refinery |
| CN1509987A (en) * | 2002-12-24 | 2004-07-07 | 桂林矿产地质研究院 | Production of potassium containing chemical products from waste liquid of molasses alcohol production |
| CN101759554A (en) * | 2009-12-31 | 2010-06-30 | 杭州临安金龙化工有限公司 | Method for treating and utilizing potassium hydrogen tartrate mother liquor |
| CN106976945A (en) * | 2017-04-11 | 2017-07-25 | 天津理工大学 | Removing sodium containing sodium-salt aqueous solution under a kind of sour environment |
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| NL179489B (en) * | 1952-07-01 | Eni Ente Naz Idrocarb | PROCEDURE FOR THE REMOVAL OF POTASSIUM SALTS FROM A RESIDUE OF THE DISTILLATION OF FERMENTED SUGAR BEET MOLASSES. | |
| CN1174668A (en) * | 1997-09-20 | 1998-03-04 | 广西大学 | Method for producing fowl and animal fodder from depossified molases alcohol waste liquid of sugar-refinery |
| CN1509987A (en) * | 2002-12-24 | 2004-07-07 | 桂林矿产地质研究院 | Production of potassium containing chemical products from waste liquid of molasses alcohol production |
| CN101759554A (en) * | 2009-12-31 | 2010-06-30 | 杭州临安金龙化工有限公司 | Method for treating and utilizing potassium hydrogen tartrate mother liquor |
| CN106976945A (en) * | 2017-04-11 | 2017-07-25 | 天津理工大学 | Removing sodium containing sodium-salt aqueous solution under a kind of sour environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111099709A (en) * | 2019-12-24 | 2020-05-05 | 珠海广睿汇利发展有限公司 | Seawater potassium removal method |
| CN112707739A (en) * | 2020-12-30 | 2021-04-27 | 辽宁科技大学 | Method for removing potassium chloride in bricks used in cement kiln |
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