CN109231387A - A kind of compound material for water treatment of stalk/aluminium polychloride and preparation method thereof - Google Patents
A kind of compound material for water treatment of stalk/aluminium polychloride and preparation method thereof Download PDFInfo
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- CN109231387A CN109231387A CN201811191018.9A CN201811191018A CN109231387A CN 109231387 A CN109231387 A CN 109231387A CN 201811191018 A CN201811191018 A CN 201811191018A CN 109231387 A CN109231387 A CN 109231387A
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- stalk
- aluminium
- water treatment
- water
- compound material
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular 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
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
Abstract
The invention discloses a kind of compound material for water treatment of stalk/aluminium polychloride and preparation method thereof, it is using liquid phase method, aluminum chloride powder is prepared by raw material of flyash, then aluminum chloride powder is compound with rice straw, a kind of composite material with good water treatment efficiency is made.The compound material for water treatment of the present invention uses trade waste flyash and agricultural wastes straw for raw material, cheap, and can prepare at normal temperatures and pressures；Gained composite material flocculating property is good; there is good processing capacity to waste water; advantage of the aluminium salt polymer in water treatment procedure can not only be played; aluminium ion residual quantity in aqueous solution is reduced after aluminium salt polymer treatment waste water again; aluminium ion can farthest be improved and enter negative effect caused by water environment; water aluminium ion concentration after solving the problems, such as tradition aluminium salt flocculant process is excessively high, can effectively avoid the therefore harm caused by human health, is suitable for waste water scale and handles.
Description
Technical field
The invention belongs to technical field of material, and in particular to a kind of compound material for water treatment of stalk/aluminium polychloride
And preparation method thereof.
Background technique
Stalk is one of nature renewable resource from agricultural wastes, is rich in cellulose, hemicellulose
And lignin, and a large amount of hydroxyl isoreactivity group is distributed on its strand, it can be used as a kind of cheap organic high score
Son, and there is good flocculation and Absorptive complex wave effect to the polluter in water body.
Flyash is the primary solids waste of coal-burning power plant's discharge, the main oxides composition of flyash are as follows: SiO2、
Al2O3、FeO、Fe2O3、CaO、TiO2Deng.Al in these oxides2O3Content highest, has reached 60% or so, and Al2O3It is production
The raw material of polyaluminium salts, aluminium polychloride have good flocculating property as traditional flocculant, wad a quilt with cotton in recent years in pollutant
Solidifying removal aspect shows good application prospect.But single flocculant of polymeric aluminium chloride usually can during handling water body
Aluminium ion concentration is increased, and aluminium ion concentration is excessively high in water can cause the human health problems such as senile dementia.
The present invention is based on the superior structural ingredients of stalk and flyash, prepare a kind of stalk through liquid phase method using it as raw material
With the compound material for water treatment of aluminium polychloride, not only using the good adsorption-flocculation of stalk, but also the wadding of aluminium salt can be strengthened
Solidifying effect increases contact of the polyaluminium salts with organic pollutant, improves the efficiency of its water process.
Summary of the invention
The purpose of the present invention is to provide a kind of compound material for water treatment of stalk/aluminium polychloride and preparation method thereof,
Using the compound material for water treatment that the cheap stalk being easy to get and trade waste flyash are prepared as raw material, have to dyestuff in water etc.
Machine pollutant has good flocculating effect, is suitable for waste water scale and handles.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of compound material for water treatment of stalk/aluminium polychloride is to prepare aluminium chloride by raw material of flyash using liquid phase method
Powder, then aluminum chloride powder is compound with rice straw, the compound material for water treatment is made.
The preparation method of the compound material for water treatment of stalk/aluminium polychloride includes the following steps:
1) flyash is impregnated 5 ~ 8 hours in the hydrochloric acid solution of 10wt% ~ 30wt% by the amount of 3mL/g, then addition 20wt% ~
It is 11 ~ 13 that the sodium hydroxide solution of 30wt%, which adjusts pH, filtering, then in gained filtrate by volume 1:1 be added 10wt% ~
The hydrochloric acid solution of 20wt% reacts 1.5 hours in 70 ~ 90 DEG C under agitation；It is separated by filtration, is obtained containing chlorine after reaction
Change the filtrate of aluminium, then Paris white is added in gained filtrate and adjusts basicity, agitated, filtering, filtrate is dry, is polymerize
Aluminum chloride powder；
2) at room temperature, rice straw is added to the sodium hydroxide solution of 5wt% ~ 15wt% after washing except soil, drying, crushing
In, it quickly mixes slowly again after mixing evenly for 24 hours, then through centrifugation, filtering, filtration cakes torrefaction, obtains stalk powder；
3) add water to be made into the solution of 20wt% ~ 30wt% polyaluminium aluminium powder obtained by step 1), be then added obtained by step 2
Stalk powder, in 50 ~ 80 DEG C of 6 ~ 8 h of stirred in water bath, until floccule is precipitated；
4) by after the filtering of suspension obtained by step 3), gained precipitating is used ethanol washing 3 times, dry to get the compound water process
Material.
0.3 ~ 0.4 g is added by every gram of flyash in the dosage of Paris white in step 1).
The revolving speed quickly stirred in step 2 is 200 ~ 250 r/min, and the revolving speed mixed slowly is 120 ~ 150 r/min.
The weight ratio of polyaluminium aluminium powder and stalk powder used is 1:2 in step 3).
Compared with prior art, the present invention having the following advantages that and effect:
(1) the present invention is based on the characteristics that flyash is rich in aluminium chloride, and using liquid phase method, trade waste flyash is made through processing
It is distributed in polyaluminum chloride aqueous solution at aluminium polychloride, then by stalk, by physics and chemisorption, makes organic high
Molecule stalk penetrates into inorganic polymer aluminium polychloride, and the hydroxyl on stalk in hydroxyl and aluminium polychloride is made to pass through hydrogen
Bond is combined, to form the novel compound material for water treatment of organic-inorganic macromolecule.The compound material for water treatment has
High specific surface area and good adsorption-flocculation ability, to the inorganic organic pollutant such as heavy metal ions in wastewater and dyestuff have compared with
Good adsorption-flocculation effect is suitable for waste water scale and handles.
(2) the compound material for water treatment of the present invention had not only maintained the flocculating property of aluminium polychloride, but also can reduce aluminium salt polymerization
Object handles the residual quantity of aluminium ion in water after waste water, farthest improves aluminium ion and enters and negatively makees caused by environment
With the water aluminium ion concentration after solving the problems, such as tradition aluminium salt flocculant process is excessively high, can effectively avoid therefore strong to human body
It is endangered caused by health.
(3) it is on the one hand destroyed in preparation method of the present invention using the NaOH solution that mass-volume concentration is 5 ~ 15% as solvent
The ordered structure of stalk, reduces the crystallinity of stalk, on the other hand the active group in stalk can be made easily to be formed with hydrone
Hydrogen bond, to improve the dissolution of stalk.
(4) present invention uses industrial or agricultural solid waste to prepare compound material for water treatment without secondary pollution for raw material,
Its raw material sources is abundant, and preparation process is simple, and reaction condition is mild, and technological parameter is easily controllable.
Specific embodiment
In order to make content of the present invention easily facilitate understanding, With reference to embodiment to of the present invention
Technical solution is described further, but the present invention is not limited only to this.
Embodiment 1:
1) 20g flyash is placed in a reaction flask, is added in the hydrochloric acid solution of 60 mL, 10wt% and impregnates 5 hours, then adds
It is 11 that the sodium hydroxide solution of 20wt%, which adjusts pH, filtering, and the hydrochloric acid of the 10wt% of 1:1 addition by volume is molten in gained filtrate
Liquid reacts 1.5 hours in 70 DEG C under agitation；It is separated by filtration after reaction, the filtrate of chloride containing aluminium is obtained, in gained
6g Paris white is added in filtrate, adjusts basicity, agitated, filtering, filtrate are dry, obtain polyaluminium aluminium powder (without
Dry filtrate can also be directly as water purification agent)；
2) it in the sodium hydroxide solution that rice straw at room temperature, is added to 5wt% after washing except soil, drying, crushing, is made into
Stalk concentration is the solution of 2wt%, then quickly after mixing evenly with 200 r/min, then is mixed slowly for 24 hours with 120 r/min,
Obtain light yellow straw solution；
3) by the centrifugation of straw solution obtained by step 2, filtering, filtration cakes torrefaction, stalk powder is obtained；
4) add water to be made into the solution of 20wt% gained polyaluminium aluminium powder, polyaluminium 2 times of weights of aluminium powder used are then added
The stalk powder of amount, in 50 DEG C of 6 h of stirred in water bath, until floccule is precipitated；
5) by after the filtering of suspension obtained by step 4), gained precipitating is used ethanol washing 3 times, dry to get stalk/aluminium polychloride
Compound material for water treatment.
Embodiment 2:
1) 20g flyash is placed in a reaction flask, the hydrochloric acid solution that 60 mL, 20wt% are added impregnates 6 hours, then adds
It is 12 that the sodium hydroxide solution of 25wt%, which adjusts pH, filtering, and the hydrochloric acid of the 15wt% of 1:1 addition by volume is molten in gained filtrate
Liquid reacts 1.5 hours in 80 DEG C under agitation；It is separated by filtration after reaction, the filtrate of chloride containing aluminium is obtained, in gained
7g Paris white is added in filtrate, adjusts basicity, agitated, filtering, filtrate are dry, obtain polyaluminium aluminium powder (without
Dry filtrate can also be directly as water purification agent)；
2) it in the sodium hydroxide solution that rice straw at room temperature, is added to 10wt% after washing except soil, drying, crushing, is made into
Stalk concentration is the solution of 3wt%, then quickly after mixing evenly with 230 r/min, then is mixed slowly for 24 hours with 130 r/min,
Obtain light yellow straw solution；
3) by the centrifugation of straw solution obtained by step 2, filtering, filtration cakes torrefaction, stalk powder is obtained；
4) add water to be made into the solution of 25wt% gained polyaluminium aluminium powder, polyaluminium 2 times of weights of aluminium powder used are then added
The stalk powder of amount, in 70 DEG C of 7 h of stirred in water bath, until floccule is precipitated；
5) by after the filtering of suspension obtained by step 4), gained precipitating is used ethanol washing 3 times, dry to get stalk/aluminium polychloride
Compound material for water treatment.
Embodiment 3:
1) 20g flyash is placed in a reaction flask, is added in the hydrochloric acid solution of 60 mL, 30wt% and impregnates 8 hours, then adds
It is 13 that the sodium hydroxide solution of 30wt%, which adjusts pH, and filtering, the hydrochloric acid of 10wt% is added in 1:1 mL by volume in gained filtrate
Solution reacts 1.5 hours in 90 DEG C under agitation；It is separated by filtration after reaction, obtains the filtrate of chloride containing aluminium, in institute
It obtains and 8g Paris white is added in filtrate, adjust basicity, agitated, filtering, filtrate are dry, obtain polyaluminium aluminium powder (not
Dried filtrate can also be directly as water purification agent)；
2) it in the sodium hydroxide solution that rice straw at room temperature, is added to 15wt% after washing except soil, drying, crushing, is made into
Stalk concentration is the solution of 5wt%, then quickly after mixing evenly with 250 r/min, then is mixed slowly for 24 hours with 150 r/min,
Obtain light yellow straw solution；
3) by the centrifugation of straw solution obtained by step 2, filtering, filtration cakes torrefaction, stalk powder is obtained；
4) add water to be made into the solution of 30wt% gained polyaluminium aluminium powder, polyaluminium 2 times of weights of aluminium powder used are then added
The stalk powder of amount, in 60 DEG C of 10 h of stirred in water bath, until floccule is precipitated；
5) by after the filtering of suspension obtained by step 4), gained precipitating is used ethanol washing 3 times, dry to get stalk/aluminium polychloride
Compound material for water treatment.
1. by the compound material for water treatment of stalk/aluminium polychloride obtained by embodiment 1-3 and independent aluminium polychloride obtained
(additional amount is 0.5 g/L) is separately added into the waste water with a batch acquisition, after measuring Water condition material processing 2L waste water
In water the case where aluminium ion residual quantity, 1 the results are shown in Table.
After 1 Water condition material processing of table in waste water the case where aluminium ion residual quantity
It seen from table 1, can using the compound material for water treatment of stalk/aluminium polychloride of the present invention compared with aluminium polychloride processing
It is substantially reduced aluminum ions residual quantity in processed waste water, avoidable aluminium ion enters negative effect caused by environment.
2. by the compound material for water treatment of stalk/aluminium polychloride obtained by embodiment 1-3 and independent polyaluminium obtained
Aluminium, stalk powder are separately added into the waste water with a batch acquisition (additional amount is 0.5 g/L), to measure Water condition material pair
The removal situation of contained pollutant, the results are shown in Table 2 in waste water.
Removal situation of the 2 Water condition material of table to pollutant contained in waste water
As can be seen from Table 2, stalk is distributed to by the present invention using liquid phase method compared with aluminium polychloride or stalk powder is used alone
The compound material for water treatment prepared in polyaluminum chloride aqueous solution has good adsorption-flocculation ability, to Wastewater Dyes, again
Metal ion and COD(COD) etc. have preferable adsorption-flocculation effect, be suitable for waste water scale handle.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (6)
1. a kind of preparation method of the compound material for water treatment of stalk/aluminium polychloride, it is characterised in that: liquid phase method is used, with powder
Coal ash is raw material preparation aluminum chloride powder, then it is compound with rice straw, and the compound material for water treatment is made.
2. the preparation method of the compound material for water treatment of stalk/aluminium polychloride according to claim 1, it is characterised in that: packet
Include following steps:
1) flyash is impregnated 5 ~ 8 hours in the hydrochloric acid solution of 10wt% ~ 30wt%, the hydrogen-oxygen of 20wt% ~ 30wt% is then added
Changing sodium solution to adjust pH is 11 ~ 13, filtering, then the hydrochloric acid of the 10wt% ~ 20wt% of 1:1 addition by volume is molten in gained filtrate
Liquid reacts 1.5 hours in 70 ~ 90 DEG C under agitation；It is separated by filtration after reaction, obtains the filtrate of chloride containing aluminium, then
Paris white is added in gained filtrate, agitated, filtering, filtrate is dry, obtains polyaluminium aluminium powder；
2) at room temperature, rice straw is added to the sodium hydroxide solution of 5wt% ~ 15wt% after washing except soil, drying, crushing
In, it quickly mixes slowly again after mixing evenly for 24 hours, then through centrifugation, filtering, filtration cakes torrefaction, obtains stalk powder；
3) add water to be made into the solution of 20wt% ~ 30wt% polyaluminium aluminium powder obtained by step 1), be then added obtained by step 2
Stalk powder, in 50 ~ 80 DEG C of 6 ~ 8 h of stirred in water bath, until floccule is precipitated；
4) by after the filtering of suspension obtained by step 3), gained precipitating is used ethanol washing 3 times, dry to get the compound water process
Material.
3. the preparation method of the compound material for water treatment of stalk/aluminium polychloride according to claim 2, it is characterised in that: step
It is rapid 1) in the dosage of Paris white 0.3 ~ 0.4 g is added by every gram of flyash.
4. the preparation method of the compound material for water treatment of stalk/aluminium polychloride according to claim 2, it is characterised in that: step
It is rapid 2) in the revolving speed that quickly stirs be 200 ~ 250 r/min, the revolving speed mixed slowly is 120 ~ 150 r/min.
5. the preparation method of the compound material for water treatment of stalk/aluminium polychloride according to claim 2, it is characterised in that: step
It is rapid 3) in the weight ratio of polyaluminium aluminium powder and stalk powder used be 1:2.
6. the compound material for water treatment of stalk/aluminium polychloride made from a kind of method as described in claim 1.
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| CN201811191018.9A CN109231387B (en) | 2018-10-12 | 2018-10-12 | Straw/polyaluminium chloride composite water treatment material and preparation method thereof |
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| CN201811191018.9A CN109231387B (en) | 2018-10-12 | 2018-10-12 | Straw/polyaluminium chloride composite water treatment material and preparation method thereof |
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| CN109231387B CN109231387B (en) | 2021-08-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183685A (en) * | 2019-05-13 | 2019-08-30 | 中国海洋石油集团有限公司 | A kind of xanthan gum solution rapid break method |
| CN110690391A (en) * | 2019-10-12 | 2020-01-14 | 福建师范大学 | Coating method of high-safety diaphragm |
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| JPS5156564A (en) * | 1974-11-11 | 1976-05-18 | Oji Paper Co | |
| CN101172684A (en) * | 2007-10-09 | 2008-05-07 | 王贵明 | Method for industrial production of polymeric aluminum ferric chloride water purification agent with coal ash |
| CN104261541A (en) * | 2014-10-11 | 2015-01-07 | 福建融泉净水剂有限公司 | Straw/polyferric sulfate composite water treatment material and preparation method thereof |
| CN104724737A (en) * | 2015-01-15 | 2015-06-24 | 内蒙古大学 | Method for preparing solid-state efficient flocculant by using coal ash as raw material |
-
2018
- 2018-10-12 CN CN201811191018.9A patent/CN109231387B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5156564A (en) * | 1974-11-11 | 1976-05-18 | Oji Paper Co | |
| CN101172684A (en) * | 2007-10-09 | 2008-05-07 | 王贵明 | Method for industrial production of polymeric aluminum ferric chloride water purification agent with coal ash |
| CN104261541A (en) * | 2014-10-11 | 2015-01-07 | 福建融泉净水剂有限公司 | Straw/polyferric sulfate composite water treatment material and preparation method thereof |
| CN104724737A (en) * | 2015-01-15 | 2015-06-24 | 内蒙古大学 | Method for preparing solid-state efficient flocculant by using coal ash as raw material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183685A (en) * | 2019-05-13 | 2019-08-30 | 中国海洋石油集团有限公司 | A kind of xanthan gum solution rapid break method |
| CN110183685B (en) * | 2019-05-13 | 2022-04-08 | 中国海洋石油集团有限公司 | Rapid gel breaking method for xanthan gum solution |
| CN110690391A (en) * | 2019-10-12 | 2020-01-14 | 福建师范大学 | Coating method of high-safety diaphragm |
| CN110690391B (en) * | 2019-10-12 | 2022-04-22 | 福建师范大学 | Coating method of high-safety diaphragm |
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