CN106430508A - Acidic vanadium precipitation wastewater cleaning agent as well as production method and application thereof - Google Patents
Acidic vanadium precipitation wastewater cleaning agent as well as production method and application thereof Download PDFInfo
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- CN106430508A CN106430508A CN201611039316.7A CN201611039316A CN106430508A CN 106430508 A CN106430508 A CN 106430508A CN 201611039316 A CN201611039316 A CN 201611039316A CN 106430508 A CN106430508 A CN 106430508A
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- cleanser
- production method
- waste water
- acid waste
- water
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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
- C02F1/62—Heavy metal 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/60—Silicon compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
Abstract
The invention discloses an acidic vanadium precipitation wastewater cleaning agent as well as a production method and application thereof. The production method of the acidic vanadium precipitation wastewater cleaning agent comprises the following steps: weighting a certain amount of water and pouring into a reactor; respectively weighting and adding certain masses of polyacrylamide, polyaluminium sulfate and polymeric ferric sulfate into the reactor in sequence, and stirring; adjusting the pH value of a uniformly stirred mixed liquid, and controlling the pH value of the mixed liquid to be 4-4.5; then standing for 25-30 minutes, so as to obtain a supernate, namely the acidic vanadium precipitation wastewater cleaning agent. The addition amount of the acidic vanadium precipitation wastewater cleaning agent disclosed by the invention is 5-10ml/L in the vanadium precipitation wastewater treatment process. The production method disclosed by the invention is simple in process, strong in applicability, and capable of implementing automatic production. According to the production method provided by the invention, as only the reactor with a stirring device and a thermometer is required to be used, the used equipment is mature and equipment investment is relatively low.
Description
Technical field
The present invention relates to a kind of field of waste water treatment is and in particular to a kind of cleanser of acid waste water for depositing vanadium and its producer
Method and application.
Background technology
Acid waste water for depositing vanadium is that in vanadic anhydride or Vanadium sesquioxide production process, vanadium slag is in roasting, leaching, precipitation etc.
The waste water containing chromium (VI) and vanadium (V) that production process produces, wherein, the concentration 0.3g/L～2.5g/L of chromium (VI), vanadium (V)
Concentration 0.10g/L～0.25g/L, pH value be 1～3.Chromium (VI) and vanadium (V) all have very strong toxicity, particularly chromium
(VI) serious to ecological environmental pollution, it is enriched with vivo by food chain, and can not be decomposed by the microorganisms, water soluble chromium
(VI) it has been listed in one of chemical substance maximum to harm.
At present, domestic majority vanadium manufacturer processes acid by the way of GBS reduction-alkaline chemical precipitation-filtration-evaporative crystallization
Property vanadium wastewater.Advantage using the method is technological process section, simple to operate, technology maturation.But existed using the method
Vanadium, chromium sedimentation not exclusively, the low problem of silicon clearance, lead to the waste water after reduction treatment in evaporation and concentration running due to
Chromium, the enrichment of silicon, degeneration, in heat exchanger surface fouling, significantly reduce the heat exchange efficiency of system, cause cleaning systems frequently,
Equipment operation rate is low, and waste treatment capacity is low, the ability orientation of impact wastewater treatment production line.
The Chinese patent application of Application No. CN201610239028.X《A kind of vanadium-containing water deep purifying processes and reclaims
The technique of vanadium chromium》Disclosing a kind of vanadium-containing water process for deeper purifying is to adjust the pH value of vanadium-containing water to 4-6, successively
Vanadium-containing water is adsorbed as adsorbing medium using Resin A and resin B, Resin A is chelating ion exchange resin；Resin
B is the macroporous weakly basic anion exchange resin with many amidos；Tail washings after absorption for the vanadium-containing water gets final product qualified discharge；But
It is that the method processing cost is higher and resin absorption heavy metal post processing is difficult.In Application No. CN201210263662.9
State's patent application《A kind of processing method of acid waste water for depositing vanadium》Disclose a kind of processing method of acid waste water for depositing vanadium, detection is heavy
The concentration of chromium (VI) and vanadium (V) in vanadium waste, according to chromium (VI) and vanadium (V) gross mass, adds solid sodium pyrosulfite, carries out
Main reduction reaction for the first time；The concentration of chromium (VI) and vanadium (V) in vanadium wastewater after detection reduction for the first time, according in waste water
Remaining chromium (VI) and vanadium (V) gross mass, add ferrous sulfate or ferrous chloride, carry out second auxiliary reduction reaction；Adjusted using alkali
PH value, neutralization, precipitation, filter pressing, discharged wastewater met the national standard；But the method does not design the minimizing technology of silicon.
Enrichment with chromium in acid waste water for depositing vanadium, silicon leads to the waste water after reduction treatment in evaporation and concentration running
In, in heat exchanger surface fouling, significantly reduce the heat exchange efficiency of system, cause cleaning systems frequently, equipment operation rate is low, give up
Water treatment capacity is low, the ability orientation of impact wastewater treatment production line.Therefore, it is desirable to a kind of new cleanser, to ensure
While acid waste water for depositing vanadium realizes zero-emission, reduce the cycle of equipment scaling.
Content of the invention
[technical problem to be solved]
The purpose of the present invention is for the problem that in acid waste water for depositing vanadium, the sedimentation of vanadium chromium is thorough, silicon clearance is low, provides
A kind of cleanser of acid waste water for depositing vanadium and its production method and application.
[technical scheme]
In order to reach above-mentioned technique effect, the present invention takes technical scheme below：
A kind of production method of the cleanser for acid waste water for depositing vanadium, the method comprises the following steps：
(1) weigh a certain amount of water and pour reactor into；Then polyacrylamide, the polyaluminum sulfate of certain mass are weighed respectively
After aluminum and bodied ferric sulfate, it is added sequentially to stirring in reactor, controls concentration of polyacrylamide in the mixed liquor stirring
For 0.5g/L, polyaluminum sulfate aluminum concentration is 2.5g/L, and polyaluminum sulfate concentration of iron is 4g/L；
(2) mixed liquor stirring is carried out with the regulation of pH value, the pH value controlling mixed liquor is 4～4.5；
(3) then stand 25～30min, take supernatant, the supernatant obtaining be used for acid waste water for depositing vanadium purification
Agent.
According to the present invention further technical scheme, in step (1), the chlorine ions content in described water is not high
In 0.05g/L；The temperature of water is 0～40 DEG C.
According to the present invention further technical scheme, in step (1), the molecular weight of described polyacrylamide is 1800
～2,000 ten thousand；Purity >=90% of described polyaluminium sulfate；Purity >=90% of described bodied ferric sulfate, and in bodied ferric sulfate
Chlorine ions content≤0.05%.
According to the present invention further technical scheme, in step (1), described stirring refers in 500～700r/min
Stir speed (S.S.) under stir 45～120min.
According to the present invention further technical scheme, in step (2), the pH value of described mixed liquor is 4.25.
According to the present invention further technical scheme, the temperature of described water is 30 DEG C.
According to the present invention further technical scheme, the molecular weight of described polyacrylamide is 20,000,000.
According to the present invention further technical scheme, described stirring refers to stirring under the stir speed (S.S.) of 550r/min
90min.
The cleanser that a kind of above-mentioned production method prepares.
A kind of application of the cleanser that above-mentioned production method prepares is it is characterised in that described cleanser is acid heavy
In vanadium waste processing procedure, addition is 5～10ml/L.
According to the present invention further technical scheme, described cleanser addition in acid waste water for depositing vanadium processing procedure
For 7ml/L.
Will be described in detail the present invention below.
The present invention carries out pH value regulation to mixed liquor, and the pH value controlling mixed liquor is 4～4.5, mainly for ensureing mixing
The stability of liquid, extends its shelf-life.If pH too low production and application process can lead to equipment, corrosive pipeline be readily incorporated ferrum from
Son, the too high mixed liquor of pH can produce autoreaction, makes solution turned cloudy affect product quality.The present invention is to material purity and molecular weight
Specific requirement primarily to ensure cleanser clean-up effect；If Molecular Weight for Polyacrylamide is not within the range, use
After this cleanser, the sedimentation time can extend；Requirement to product purity, mainly for reducing in this product other impurity to product
The impact of quality.In step (1), described stirring refers to stir 45～120min under the stir speed (S.S.) of 500～700r/min；
The phenomenon that the too fast excessively slow polyacrylamide of rotating speed can not be sufficiently stirred for being formed in the solution reunion can not all dissolve；Stirring speed
Rate is too fast mainly to cause unnecessary waste；How short mixing time is can make medicine dissolving not exclusively；Long generation is unnecessary
Waste.
In the water that application claims use, chlorine ions content is not higher than 0.05g/L is to set to prevent chlorine enrichment from causing
Standby corrosion；Water temperature is less demanding to be in order to avoid raw material degeneration in 40 DEG C.
[beneficial effect]
The present invention compared with prior art, has following beneficial effect：
The production method process is simple of the present invention, strong adaptability, the production method of the present invention only needs using with stirring dress
Put the reactor with thermometer；The equipment using is ripe, and equipment investment is less.The present invention mainly mature equipment is carried out integrated simultaneously
It is adjusted controlling by automation means.
The production method of the present invention produce the cleanser obtaining be mainly used in the removal of Cr, Si in acid waste water for depositing vanadium can be by
Cr, Si in acid waste water for depositing vanadium are removed to below 15mg/l.
Specific embodiment
With reference to embodiments of the invention, the invention will be further elaborated.
Embodiment 1：
A kind of production method of the cleanser for acid waste water for depositing vanadium, the method comprises the following steps：
(1) weigh a certain amount of water and pour reactor into；Then polyacrylamide, the polyaluminum sulfate of certain mass are weighed respectively
After aluminum and bodied ferric sulfate, it is added sequentially to stirring in reactor；Control concentration of polyacrylamide in the mixed liquor stirring
For 0.5g/L, polyaluminum sulfate aluminum concentration is 2.5g/L, and polyaluminum sulfate concentration of iron is 4g/L
Chlorine ions content in described water is not higher than 0.05g/L；The temperature of water is 30 DEG C.Described polyacrylamide
Molecular weight is 20,000,000；Purity >=90% of described polyaluminium sulfate；Purity >=90% of described bodied ferric sulfate, and polymerised sulphur
Chlorine ions content≤0.05% in sour ferrum.Described stirring refers to stir 90min under the stir speed (S.S.) of 550/min.
(2) mixed liquor stirring is carried out with the regulation of pH value, the pH value controlling mixed liquor is 4.25；
(3) then stand 30min, take supernatant, the supernatant obtaining be used for acid waste water for depositing vanadium cleanser.
Embodiment 2
A kind of production method of the cleanser for acid waste water for depositing vanadium, the method comprises the following steps：
(1) weigh a certain amount of water and pour reactor into；Then polyacrylamide, the polyaluminum sulfate of certain mass are weighed respectively
After aluminum and bodied ferric sulfate, it is added sequentially to stirring in reactor；Control concentration of polyacrylamide in the mixed liquor stirring
For 0.5g/L, polyaluminum sulfate aluminum concentration is 2.5g/L, and polyaluminum sulfate concentration of iron is 4g/L；
Chlorine ions content in described water is not higher than 0.05g/L；The temperature of water is 15 DEG C.Described polyacrylamide
Molecular weight is 18,000,000；Purity >=90% of described polyaluminium sulfate；Purity >=90% of described bodied ferric sulfate, and polymerised sulphur
Chlorine ions content≤0.05% in sour ferrum.Described stirring refers to stir 60min under the stir speed (S.S.) of 700r/min.
(2) mixed liquor stirring is carried out with the regulation of pH value, the pH value controlling mixed liquor is 4.2；
(3) then stand 30min, take supernatant, the supernatant obtaining be used for acid waste water for depositing vanadium cleanser.
Embodiment 3
A kind of production method of the cleanser for acid waste water for depositing vanadium, the method comprises the following steps：
(1) weigh a certain amount of water and pour reactor into；Then polyacrylamide, the polyaluminum sulfate of certain mass are weighed respectively
After aluminum and bodied ferric sulfate, it is added sequentially to stirring in reactor；Control concentration of polyacrylamide in the mixed liquor stirring
For 0.5g/L, polyaluminum sulfate aluminum concentration is 2.5g/L, and polyaluminum sulfate concentration of iron is 4g/L；
Chlorine ions content in described water is not higher than 0.05g/L；The temperature of water is 38 DEG C.Described polyacrylamide
Molecular weight is 19,000,000；Purity >=90% of described polyaluminium sulfate；Purity >=90% of described bodied ferric sulfate, and polymerised sulphur
Chlorine ions content≤0.05% in sour ferrum.Described stirring refers to stir 100min under the stir speed (S.S.) of 610r/min.
(2) mixed liquor stirring is carried out with the regulation of pH value, the pH value controlling mixed liquor is 4.3；
(3) then stand 30min, take supernatant, the supernatant obtaining be used for acid waste water for depositing vanadium cleanser.
Embodiment 4
Carry out the process of vanadium acid waste water for depositing vanadium using the cleanser that embodiment 1 prepares：
The determination of cleanser mixing time：The cleanser of 1L is divided into quarter, is then respectively adding the vanadium of quarter
In acid waste water for depositing vanadium, respectively stirring 40,90,120,150min.By observing to four groups of solution, upon agitation between
During 40min, raw material is not completely dissolved, and continues stirring 5min reactant dissolving completely, for avoiding due to materials variance and storage process
The impact of middle temperature, needs proper extension mixing time, after summarizing through test of many times is controlled to no cleanser mixing time
90min.
The determination of reaction coolant-temperature gage：The cleanser of 1L is divided into quarter, is then respectively adding the vanadic acid of quarter
In vanadium wastewater, respectively with preparing cleanser under the conditions of 20,30,40,50 DEG C, silicon in vanadium wastewater after being purified by testing inspection
Content determine reaction temperature；Result of the test shows, water temperature >=40 DEG C, silicone content >=550mg/l no clean-up effect substantially；
Water temperature≤40 DEG C silicone content≤30mg/l, when 30 DEG C, the minimum 18mg/l of silicone content.
The determination of cleanser addition：The cleanser of 1L is divided into quarter, then according to addition be respectively 3,5,7,
9th, 11ml/L is added in corresponding vanadium acid waste water for depositing vanadium, and result of the test shows, when cleanser addition is 7ml/l, to purify
In solution, silicone content is that 15mg/l is minimum, so the pH value of no chlorine Dephosphorising agent product is set to 8.5 afterwards.
The result of the test of embodiment 4 shows, the best applications condition of the cleanser that the production method of the present invention prepares
It is：Be incorporated as the cleanser of 7ml/L in vanadium acid waste water for depositing vanadium after, stirring reaction 90min at temperature is 30 DEG C, obtain
Chromium, silicone content are less than the product of 15mg/L.
Although reference be made herein to invention has been described for the explanatory embodiment of the present invention, and above-described embodiment is only this
Bright preferably embodiment, embodiments of the present invention are simultaneously not restricted to the described embodiments it should be appreciated that people in the art
Member can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will fall in principle disclosed in the present application
Within scope and spirit.
Claims (10)
1. a kind of production method of the cleanser for acid waste water for depositing vanadium is it is characterised in that the method comprises the following steps：
(1) weigh a certain amount of water and pour reactor into；Then weigh respectively the polyacrylamide of certain mass, polyaluminium sulfate and
After bodied ferric sulfate, it is added sequentially to stirring in reactor, in the mixed liquor that control stirs, concentration of polyacrylamide is
0.5g/L, polyaluminum sulfate aluminum concentration is 2.5g/L, and polyaluminum sulfate concentration of iron is 4g/L；
(2) mixed liquor stirring is carried out with the regulation of pH value, the pH value controlling mixed liquor is 4～4.5；
(3) then stand 25～30min, take supernatant, the supernatant obtaining be used for acid waste water for depositing vanadium cleanser.
2. the production method of the cleanser for acid waste water for depositing vanadium according to claim 1 is it is characterised in that in step
(1), in, the chlorine ions content in described water is not higher than 0.05g/L；The temperature of water is 0～40 DEG C.
3. the production method of the cleanser for acid waste water for depositing vanadium according to claim 1 is it is characterised in that in step
(1), in, the molecular weight of described polyacrylamide is 1800～20,000,000；Purity >=90% of described polyaluminium sulfate；Described poly-
Close purity >=90% of iron sulfate, and chlorine ions content≤0.05% in bodied ferric sulfate.
4. the production method of the cleanser for acid waste water for depositing vanadium according to claim 1 is it is characterised in that in step
(1), in, described stirring refers to stir 45～120min under the stir speed (S.S.) of 500～700r/min.
5. the production method of the cleanser for acid waste water for depositing vanadium according to claim 1 is it is characterised in that in step
(2), in, the pH value of described mixed liquor is 4.25.
6. the production method of the cleanser for acid waste water for depositing vanadium according to claim 2 is it is characterised in that described water
Temperature be 30 DEG C.
7. the production method of the cleanser for acid waste water for depositing vanadium according to claim 3 is it is characterised in that described gather
The molecular weight of acrylamide is 20,000,000.
8. the production method of the cleanser for acid waste water for depositing vanadium according to claim 4 is it is characterised in that described stir
Mix and refer to stir 90min under the stir speed (S.S.) of 550r/min.
9. the cleanser that the production method described in a kind of claim 1～8 any one prepares.
10. a kind of application of the cleanser described in claim 9 was it is characterised in that this cleanser was processed in acid waste water for depositing vanadium
In journey, addition is 5～10ml/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039316.7A CN106430508B (en) | 2016-11-21 | 2016-11-21 | The cleanser and its production method of a kind of acid waste water for depositing vanadium and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039316.7A CN106430508B (en) | 2016-11-21 | 2016-11-21 | The cleanser and its production method of a kind of acid waste water for depositing vanadium and application |
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| CN106430508A true CN106430508A (en) | 2017-02-22 |
| CN106430508B CN106430508B (en) | 2019-08-30 |
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| CN101327976A (en) * | 2008-07-15 | 2008-12-24 | 南通立源水处理技术有限公司 | Efficient water treatment flocculant |
| CN103073101A (en) * | 2012-12-29 | 2013-05-01 | 中国科学院过程工程研究所 | Cationic polyacrylamide-modified Fe3O4 magnetic flocculant and preparation method thereof |
| CN103613182A (en) * | 2013-12-10 | 2014-03-05 | 成应向 | Heavy-metal high flocculant and application thereof |
| CN103922454A (en) * | 2014-04-15 | 2014-07-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for removing manganese from acidic molybdenum precipitation wastewater |
| CN104261536A (en) * | 2014-09-28 | 2015-01-07 | 佑景天（北京）国际水环境研究中心有限公司 | Efficient flocculating agent for rapidly removing heavy metals in water |
-
2016
- 2016-11-21 CN CN201611039316.7A patent/CN106430508B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327976A (en) * | 2008-07-15 | 2008-12-24 | 南通立源水处理技术有限公司 | Efficient water treatment flocculant |
| CN103073101A (en) * | 2012-12-29 | 2013-05-01 | 中国科学院过程工程研究所 | Cationic polyacrylamide-modified Fe3O4 magnetic flocculant and preparation method thereof |
| CN103613182A (en) * | 2013-12-10 | 2014-03-05 | 成应向 | Heavy-metal high flocculant and application thereof |
| CN103922454A (en) * | 2014-04-15 | 2014-07-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for removing manganese from acidic molybdenum precipitation wastewater |
| CN104261536A (en) * | 2014-09-28 | 2015-01-07 | 佑景天（北京）国际水环境研究中心有限公司 | Efficient flocculating agent for rapidly removing heavy metals in water |
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