CN101391830A - Titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent and preparation method thereof - Google Patents
Titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent and preparation method thereof Download PDFInfo
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- CN101391830A CN101391830A CNA2008102185261A CN200810218526A CN101391830A CN 101391830 A CN101391830 A CN 101391830A CN A2008102185261 A CNA2008102185261 A CN A2008102185261A CN 200810218526 A CN200810218526 A CN 200810218526A CN 101391830 A CN101391830 A CN 101391830A
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- acid hydrolysis
- titanium dioxide
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- decoloring agent
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Abstract
The invention relates to a modified and high-efficiency multi-function decolorizer of titanium dioxide acid hydrolysis waste residue and a preparation method thereof. Acid hydrolysis waste residue containing titanium sulfate is successively and respectively added with sodium hydroxide, peroxide, waste acid and calcium and magnesium powder according to the weight rate of the materials, therefore, the acid hydrolysis waste residue containing titanium sulfate generates nanometer titanium dioxide by nutralization, hydrolysis and acidification; added ferrous iron and iron in the acid hydrolysis waste residue are dehydrated at the temperature of 100-200 DEG C, oxidized at the temperature of 400-500 DEG C and then generate polymerization ferrous sulfate after natural cooling, telomerization and aging. The organic pollutants in wastewater are rapidly degraded by nano TiO2 and directly converted into non-toxic and harmless CO2, H2O and inorganic matters. Without changing the pH value of original sewage, the coagulation speed is fast, alumen ustum is big, settlement is quick, and the decolorizer has the functions of decolorization, degerming, removing radioactive elements and heavy metal ions, reducing COD and BOD, small feeding amount and strong adaptability.
Description
[technical field]
The invention belongs to the chemical processing agent technical field, relate to and a kind of waste water is had photocatalytic degradation and cohesion, make the organic pollutant in the waste water be converted into nontoxic, harmless CO
2, H
2Titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent of O and inorganics and preparation method thereof.
[background technology]
Contain carcinogenic substances such as phenyl ring, amino, azo group type organic in the waste water from dyestuff, the waste water that contains tensio-active agent is easy to generate peculiar smell and foam, and can influence the biodegradability of waste water, non-ionic type and cationic surfactant are difficult to biological degradation, sometimes also can produce poisonous or undissolvable intermediate, the ordinary method processing efficiency is very low, returns problems such as look and COD can fall, even produces secondary pollution.
[summary of the invention]
In order to overcome the above-mentioned shortcoming of prior art, the invention provides and a kind of waste water is had photocatalytic degradation and cohesion, make the organic pollutant in the waste water be converted into nontoxic, harmless CO
2, H
2Titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent of O and inorganics and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is: a kind of titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent, its main raw material and weight ratio thereof are: the acidolysis residue 25～35 of sulfur acid oxygen titanium, ferrous sulfate 70～90, hydrogen peroxide 5～15, calcium-magnesium powder 4～8, spent acid 5～15, caustic soda 1～3.
A kind of preparation method of titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent is, the acidolysis residue that will contain titanyl sulfate, press the weight ratio of above-mentioned raw materials, successively add caustic soda, hydrogen peroxide, spent acid and calcium-magnesium powder respectively, make the acidolysis residue that contains titanyl sulfate after neutralization, hydrolysis, acidifying, production nanometer titanium white; Iron in the added ferrous and acidolysis residue after dehydration under 100～200 ℃ the temperature, carries out oxidation under 400～500 ℃ of high temperature, then through naturally cooling, telomerize, ageing, generate polymerization ferrous sulfate.
The invention has the beneficial effects as follows: pass through nano-TiO
2Organic pollutant in the waste water is degraded rapidly, be converted into nontoxic, harmless CO
2, H
2O and inorganics, do not changing under the pH value situation of original sewage, cohesion speed is fast, alumen ustum is big, sedimentation is rapid, has decolouring, degerming, removes radioelement, the removing heavy metals ion, reduces COD and BOD function, and dosage of the present invention is few, adaptive faculty is strong, can both obtain good result to various sewage disposals.
[embodiment]
The present invention is further described below in conjunction with embodiment:
The English name of titanyl sulfate: titangl sulfare, molecular formula is TiOSO
4.2H
2O, molecular weight are 195.9.
A kind of titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent, the main raw material and the weight ratio thereof that are adopted are: the acidolysis residue 30 that contains 30% (weight percent) titanyl sulfate, ferrous sulfate 80, hydrogen peroxide 10, calcium-magnesium powder 6, spent acid 10, caustic soda 1, caustic soda can replace with ammonium water.
A kind of preparation method of titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent is, the acidolysis residue that will contain titanyl sulfate, press the weight ratio of above-mentioned raw materials, successively add caustic soda, hydrogen peroxide, spent acid and calcium-magnesium powder respectively, make the acidolysis residue that contains titanyl sulfate after neutralization, hydrolysis, acidifying, production nanometer titanium white; Iron in the added ferrous and acidolysis residue after dehydration under 100～200 ℃ the temperature, carries out oxidation under 400～500 ℃ of high temperature, then through naturally cooling, telomerize, ageing, generate polymerization ferrous sulfate.
The present invention is titanyl sulfate and the iron that utilizes in the waste residue, when producing poly-iron, employed additive and flow process help titanyl sulfate and generate the nanometer titanium white, the temperature of high temperature oxidation, adapt to the crystallization of nanometer titanium white, produced the nanometer titanium white again like this in the poly-iron of ferrous sulfate production, promptly this product promptly has the effect that ability that the nanometer titanium white administers waste water has poly-iron again, forms the inorganics that a kind of high-efficiency multi-function is administered sewage.The nanometer titanium white has higher photochemical catalytic oxidation ability, and its energy gap is E
g=3.2ev is equivalent to the energy of wavelength 387nm light, this just in time is in the ultraviolet region, so, the ultraviolet source of using titanium dioxide to need as photocatalysis oxidation reaction, under action of ultraviolet radiation, electronics is excited to conduction band on its valence band, and produces the hole on valence band, and it is right to form the unbound electron hole, promptly under ultraviolet irradiation, series of chemical takes place in the hole that can decomposite the electronegative electronics that moves freely and positively charged voluntarily, forms electron-hole pair, and absorption is dissolved in TiO
2The oxygen trapped electron on surface forms O
2 -The hole then will be absorbed in TiO
2The OH on surface
-And H
2O is oxidized to HO; Atomic oxygen that generates and hydroxyl free radical have very strong chemically reactive, particularly atomic oxygen to react with most organism, make the oxidized decomposition of organism, finally are decomposed into CO
2, H
2O and inorganics.
Utilize nanometer Ti
2The O photocatalysis decontamination has become one of the most rising method of environment of administering, nanometer titanium white photocatalysis to degrade organic matter waste water has huge specific surface area, thereby have with waste water in organic pollutant contact more fully, organism can be adsorbed on to the utmost its particle surface, has stronger ultraviolet absorption ability simultaneously, thereby have stronger photocatalytic particle degradation capability, can take off being adsorbed on its surperficial organism branch fast.And simultaneously, the bodied ferric sulfate that equal conditions generates down can produce multiple high price and multinuclear complex ion after the hydrolysis, suspensoid particle in the water is electrically neutralized, reduce current potential, impel the mutual coagulation of particle phase, produce absorption, the multi-joint effect of building bridge simultaneously, have good dewatering.
At present found that the organism of more than 3000 kind of difficult degradation can pass through nano-TiO under uviolizing according to statistics
2Rapidly degraded, when particularly higher or additive method was difficult to degrade when organic contamination substrate concentration in the water, this technology had more obvious advantage.
To iron oxide red wastewater treatment medicament experiment analysis results relatively:
One, experimental procedure:
1, choose representational three kinds of water treatment agents and experimentize, medicament is respectively iron vitriol, alkali formula chlorine aluminium and titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent of the present invention.
2, three kinds of water treatment agents are taken by weighing 10g respectively, be dissolved in the 200ml water, be mixed with 5% the aqueous solution.
3, respectively get 300ml iron oxide red waste water in beaker, to three kinds of water treatment agents all by ten thousand/ dosage add, and to adding iron vitriol and the titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent water sample splashes into NaOH solution, adjust in two water samples about pH value to 8, after then three water samples being carried out the brute force stirring, quiet heavy half an hour.
4, three kinds of water treatment agents are added by 5/10000ths carry out above-mentioned repeated experiments.
Two, experiment effect
1, three kinds of medicaments add by 5/10000ths dosage better than add the water quality effect by ten thousand/dosage.
2, add thin, the difficult precipitation of aluminium chlorohydroxide water sample flocs unit, the water-quality ratio after the processing is the water quality inferiority of two water samples in addition.
3, the water sample water quality effect of adopting after two kinds of chemicals treatment of iron vitriol and titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent is all better, big, the easy precipitation of flocs unit, sludge quantity less (all less than 5%), but adopt the water sample supernatant liquor of iron vitriol still to be with yellow, and adopt the water sample supernatant liquor of titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent more clear, be not with color, effect is than the better effects if that adopts iron vitriol.
Three, result
1, in three kinds of medicament that iron oxide red wastewater treatment experiment is selected, adopt the treatment effect of titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent best, water quality is the most clear, is adopting 5/10000ths dosages, and the pH value is controlled under the condition about 8 can obtain good experiment effect.
2, in the engineering practice utilization, should determine best dosage according to concrete water quality and operating mode.
Claims (2)
1, a kind of titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent, it is characterized in that: its main raw material and weight ratio thereof are: the acidolysis residue 25～35 of sulfur acid oxygen titanium, ferrous sulfate 70～90, hydrogen peroxide 5～15, calcium-magnesium powder 4～8, spent acid 5～15, caustic soda 1～3.
2, a kind of preparation method of titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent, it is characterized in that: the acidolysis residue that will contain titanyl sulfate, press the weight ratio of above-mentioned raw materials, successively add caustic soda, hydrogen peroxide, spent acid and calcium-magnesium powder respectively, make the acidolysis residue that contains titanyl sulfate after neutralization, hydrolysis, acidifying, production nanometer titanium white; Iron in the added ferrous and acidolysis residue after dehydration under 100～200 ℃ the temperature, carries out oxidation under 400～500 ℃ of high temperature, then through naturally cooling, telomerize, ageing, generate polymerization ferrous sulfate.
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|---|---|---|---|
| CNA2008102185261A CN101391830A (en) | 2008-10-17 | 2008-10-17 | Titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent and preparation method thereof |
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| CNA2008102185261A CN101391830A (en) | 2008-10-17 | 2008-10-17 | Titanium dioxide acid hydrolysis modified high efficiency multifunctional decoloring agent and preparation method thereof |
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| CN101391830A true CN101391830A (en) | 2009-03-25 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730812A (en) * | 2012-07-26 | 2012-10-17 | 长沙矿冶研究院有限责任公司 | Pharmaceutical compound for treating wastewater containing complex heavy metals and/or radioactive substances and application of pharmaceutical compound |
| CN103910428A (en) * | 2014-03-21 | 2014-07-09 | 华泰集团有限公司 | Comprehensive utilization method of titanium dioxide waste acid |
| CN104098207A (en) * | 2014-07-29 | 2014-10-15 | 梅卫东 | Environment-friendly method for processing waste acid in titanium dioxide production and recycling of processed residue |
| CN110386647A (en) * | 2018-04-19 | 2019-10-29 | 格瑞福技术有限公司 | Promote precipitating from water source and removes the titania based processing solution and method of heavy metal |
| CN111634885A (en) * | 2019-03-01 | 2020-09-08 | 光钰科技股份有限公司 | Industrial waste acid and slag treatment method |
| CN113548749A (en) * | 2021-07-09 | 2021-10-26 | 吴江市宏达探伤器材有限公司 | Colorant wastewater treatment agent and colorant wastewater treatment method |
-
2008
- 2008-10-17 CN CNA2008102185261A patent/CN101391830A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730812A (en) * | 2012-07-26 | 2012-10-17 | 长沙矿冶研究院有限责任公司 | Pharmaceutical compound for treating wastewater containing complex heavy metals and/or radioactive substances and application of pharmaceutical compound |
| CN103910428A (en) * | 2014-03-21 | 2014-07-09 | 华泰集团有限公司 | Comprehensive utilization method of titanium dioxide waste acid |
| CN104098207A (en) * | 2014-07-29 | 2014-10-15 | 梅卫东 | Environment-friendly method for processing waste acid in titanium dioxide production and recycling of processed residue |
| CN110386647A (en) * | 2018-04-19 | 2019-10-29 | 格瑞福技术有限公司 | Promote precipitating from water source and removes the titania based processing solution and method of heavy metal |
| CN110386647B (en) * | 2018-04-19 | 2022-03-22 | 格瑞福技术有限公司 | Titanium oxide-based treatment solution and method for promoting precipitation and removal of heavy metals from water sources |
| CN111634885A (en) * | 2019-03-01 | 2020-09-08 | 光钰科技股份有限公司 | Industrial waste acid and slag treatment method |
| CN113548749A (en) * | 2021-07-09 | 2021-10-26 | 吴江市宏达探伤器材有限公司 | Colorant wastewater treatment agent and colorant wastewater treatment method |
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Open date: 20090325 |