CN109534408A - A method of polymeric aluminum sulfate iron is prepared using acid aluminum-cleaning wastewater - Google Patents
A method of polymeric aluminum sulfate iron is prepared using acid aluminum-cleaning wastewater Download PDFInfo
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- CN109534408A CN109534408A CN201811468006.6A CN201811468006A CN109534408A CN 109534408 A CN109534408 A CN 109534408A CN 201811468006 A CN201811468006 A CN 201811468006A CN 109534408 A CN109534408 A CN 109534408A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/14—Sulfates
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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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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Abstract
The invention discloses a kind of methods using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron (PAFS), preparation method disclosed by the invention includes: sour molten-alkalization-hydrolysis curing step, using acid aluminum-cleaning wastewater as raw material, ultrasonic cavitation, waste liquid acidity, which is adjusted, with Waste Sulfuric Acid carries out the molten reaction of acid, basifier is added and carries out quaternization, be added stabilizer, deionized water be hydrolyzed, slaking reaction, obtain polymeric aluminum sulfate iron liquid product.The present invention effectively increases the content of total iron and aluminum oxide in product, realize the utilization to acid aluminum-cleaning wastewater and part bauxite resource, in the utilization of actual sewage water body, COD removal rate and sedimentation time are better than existing aluminium polychloride (PAC) and bodied ferric sulfate coagulant (PFS).
Description
Technical field
The present invention relates to acid aluminum-cleaning wastewater and bauxite resource recycling fields, more particularly to a kind of to utilize aluminium
The method of foil pickle liquor preparation polymeric aluminum sulfate iron.
Background technique
Polymeric aluminum sulfate iron PAFS is also known as polymeric aluminum sulfate iron, sulfate composite iron aluminium, and mainly organizing becomes [Al2(OH)nSO4]m[Fe2(OH)nSO4]m, it is to grow up on the basis of bodied ferric sulfate PFS and polyaluminium sulfate PAS, polymerised sulphur
Sour ferro-aluminum has both the purifying water effect of aluminium salt and the advantage that molysite is safe and harmless, also have alumen ustum is big, flocculating setting is fast, dosage is few,
The advantage that removal rate is high, application field is extensive is currently used primarily in coagulation turbidity removing, processing coking, Dairy Wastewater etc..However
Existing polymeric aluminum sulfate iron mostly uses Traditional preparation to be made, and makes ferrous ion oxygen as oxidant for example, by using hydrogen peroxide
Ferric ion is turned to, or using sodium nitrite as catalyst accelerates reaction speed, generating in preparation process has environment
The NO of influenceXGas.Traditional handicraft mostly uses the materials such as technical grade green vitriol or iron content, aluminium as raw material simultaneously, to ingredient requirement
Height, reaction condition control it is improper easily lead to total iron aluminium effective content is low, production efficiency is low, purifying water effect is poor, to sewage chemical need
The shortcomings that oxygen amount (COD) removal rate lower (being usually no more than 20%).
In recent years, domestic capacitor industry is grown rapidly, and electric aluminum foil is the critical materials for producing electronic capacitor, thus
Electrode foil Industry Quick Development is driven.In recent years, domestic year electrode foil consumption is about in 90,000,000 m2/ a, electrical corrosion aluminium foil are raw
It produces and divides pure water preparation, corrosion process, three bulk of acid solution liquid waste processing in process.To produce 90000000 m per year2/ a aluminium foil calculates, and needs
Directly consume about 50,000,000 m3Water resource.This waste liquor PH is higher lower than 2, conductivity.Currently, being to use to the processing of this acid pickle
It is discharged after alkali neutralization, not only to consume a large amount of alkali in this way, but also a large amount of aluminum hydroxide solid residue can be generated, brought new
Environmental problem.
Therefore, in conjunction with the above problem, provide it is a kind of have go turbid rate, COD removal rate high in sewage, product stability is good,
Method at low cost, easy to operate using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron, is that those skilled in the art need
It solves the problems, such as.
Summary of the invention
In view of this, the present invention provides a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron, this hair
The bright polymeric aluminum sulfate iron liquid product performance being prepared and stability are good, and the process flow of the method for the present invention is simple, effectively
Raising recycles pickle liquor and part bauxite resource.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A method of polymeric aluminum sulfate iron being prepared using acid aluminum-cleaning wastewater, the specific steps of the preparation method are such as
Under:
S1, acid are molten: acid aluminum-cleaning wastewater being placed in cavitation reactor, opens ultrasound, and stir, mixing speed 400r/
Min, while it being slowly added to Waste Sulfuric Acid, solution acidity is adjusted, source of iron, silicon source are added, reaction temperature and reaction time is controlled, makes object
Iron, aluminium in material are substantially soluble in liquid phase；
S2, quaternization: reducing temperature, and basifier is added and carries out quaternization, 1~2h of reaction time；
S3, hydrolysis, slaking reaction: reduce temperature to 55~70 DEG C, sequentially add stabilizer, deionized water is hydrolyzed,
Slaking reaction, control hydrolysis temperature are 70 DEG C, hydrolysis time 4h, and curing temperature is 55~60 DEG C, and curing time 8h is prepared
Bronzing polymeric aluminum sulfate iron liquid.
As can be seen from the above technical solutions, compared with prior art, beneficial effects of the present invention are as follows:
Polymeric aluminum sulfate iron is prepared in technical solution of the present invention selects acid aluminum-cleaning wastewater as primary raw material, passes through acid
Molten-quaternization-hydrolysis slaking reaction prepares the polymeric aluminum sulfate iron liquid with preferable flocculating property and stability, this hair
Bright preparation process is used based on the molten reaction of acid under cavitation effect effect, and the conversion ratio of aluminium iron sulfate reaches 75~80%, than
45~60% without the aluminium iron sulfate conversion ratio in ultrasound cavitation effect preparation process improve 20~30%, are effectively promoted total
Iron aluminium content, also, the polymeric aluminum sulfate iron prepared is composite water purifying agent, comprehensive performance is better than the water purification of single active ingredient
Agent.
Preferably, by total [Fe+Al] in the step S1a+b:H2SO4Molar ratio 1:2.74~2.81 adds source of iron, silicon source.
Preferably, the volume ratio of the acid aluminum-cleaning wastewater and Waste Sulfuric Acid that are added in the step S1 is 2:1.02~1.45.
Preferably, supersonic frequency is 40KHz in the step S1.
Preferably, adjusting solution acidity with Waste Sulfuric Acid in the step S1 is 9~10mol/L.
Preferably, source of iron is iron filings, any one or two kinds in bloodstone in the step S1.
Preferably, silicon source is aluminium hydroxide, any one or two kinds in aluminum sulfate in the step S1.
Preferably, reaction temperature is 110~120 DEG C in the step S1, and the reaction time is 6~8h.
Preferably, basifier is calcium aluminate powder, any one in calcium hydroxide, basicity 0.2 in the step S2
~0.4.
Preferably, temperature is reduced in the step S2 to 80~85 DEG C.
Preferably, the stabilizer in the step S3 is calcium dihydrogen phosphate, any one in phosphoric acid.
Preferably, PO is pressed in the step S34 3-:[Fe+Al]a+bMolar ratio is that 0.015~0.030:1 adds stabilizer.
In conclusion technical solution of the present invention passes through the preparation method of sour molten-quaternization-hydrolysis slaking reaction, benefit
The method for preparing liquid polymeric aluminum sulfate iron with acid aluminum-cleaning wastewater, preparation process flow is short, operating cost is low, easy to operate,
It is convenient for industrialized production, realizes the utilization to acid aluminum-cleaning wastewater and part aluminium waste, be directed to and utilize electric aluminum foil corruption
Acid aluminum-cleaning wastewater (aluminium content 0.54~1%, the H generated after erosion2SO4Content 21~23%, HCl content 3~5%), prepare water
Processing efficient water-purifying agent polymeric aluminum sulfate iron, obtained polymeric aluminum sulfate iron liquid product stability is good, and Zong iron Han Liang≤
10%, Al2O3Han Liang≤4%, basicity 16~21%, Mi Du≤1.52g/mL, and in the utilization of actual sewage water body,
COD removal rate and sedimentation time are better than existing PB1 gene and bodied ferric sulfate coagulant, in electric aluminum foil industry aluminium foil
Pickle liquor and bauxite resource recycling field have vast potential for future development.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1:
The embodiment of the present invention 1 discloses a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron, use
Technical solution is as follows:
The polymeric aluminum sulfate iron, specific step is as follows for its preparation method:
S1, acid are molten: 200mL acid aluminum-cleaning wastewater is placed in cavitation reactor, ultrasonic, supersonic frequency 40KHz is opened,
And stir, mixing speed 400r/min, while being slowly added to the Waste Sulfuric Acid of 102mL, adjusting solution acidity with Waste Sulfuric Acid is 9mol/
L, by total [Fe+Al]a+b:H2SO4Molar ratio 1:2.74, adds bloodstone 123g, aluminium hydroxide 12.70g, and control reaction temperature is
110 DEG C, 6~8h of reaction time, iron, aluminium in material are substantially soluble in liquid phase；
S2, quaternization: reduction temperature is to 80 DEG C, addition calcium aluminate powder 34.56g progress quaternization, basicity 0.4,
1~2h of reaction time；
Hydrolysis, slaking reaction: S3 reduces reaction temperature, sequentially adds calcium dihydrogen phosphate 3.444g, deionized water 200mL
It is hydrolyzed, slaking reaction, control hydrolysis temperature is 70 DEG C, hydrolysis time 4h, and curing temperature is 55 DEG C, curing time 8h, system
It is standby to obtain bronzing polymeric aluminum sulfate iron liquid；
Wherein, product quality indicator are as follows: basicity: 20%；Active component: [Fe+Al]a+b=16.05%,
Fe2O318.63%, Al2O35.71%.
Embodiment 2:
The embodiment of the present invention 2 discloses a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron, use
Technical solution is as follows:
The polymeric aluminum sulfate iron, specific step is as follows for its preparation method:
S1, acid are molten: 200mL acid aluminum-cleaning wastewater is placed in cavitation reactor, ultrasonic, supersonic frequency 40KHz is opened,
And stir, mixing speed 400r/min, while being slowly added to the Waste Sulfuric Acid of 145mL, adjusting solution acidity with Waste Sulfuric Acid is
10mol/L, by total [Fe+Al]a+b:H2SO4Molar ratio 1:2.78 adds iron filings 135g, aluminium hydroxide 22.29g, control reaction temperature
Degree is 112 DEG C, 6~8h of reaction time, and the iron, aluminium in material are substantially soluble in liquid phase；
S2, quaternization: reduction temperature is to 85 DEG C, addition calcium hydroxide 12.43g progress quaternization, basicity 0.2,
1~2h of reaction time；
S3, hydrolysis, slaking reaction: reducing reaction temperature, sequentially adds phosphoric acid 3.96g, deionized water 200mL and carries out water
Solution, slaking reaction, control hydrolysis temperature are 70 DEG C, hydrolysis time 4h, and curing temperature is 60 DEG C, and curing time 8h is prepared
Bronzing polymeric aluminum sulfate iron liquid；
Wherein, product quality indicator are as follows: basicity: 19%；Active component: [Fe+Al]a+b=16.87%,
Fe2O320.45%, Al2O34.86%.
Embodiment 3:
The embodiment of the present invention 3 discloses a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron, use
Technical solution is as follows:
The polymeric aluminum sulfate iron, specific step is as follows for its preparation method:
S1, acid are molten: 200mL acid aluminum-cleaning wastewater is placed in cavitation reactor, ultrasonic, supersonic frequency 40KHz is opened,
And stir, mixing speed 400r/min, while being slowly added to 123mL Waste Sulfuric Acid, adjusting solution acidity with Waste Sulfuric Acid is 9mol/L,
By total [Fe+Al]a+b:H2SO4Molar ratio 1:2.81, adds bloodstone 121g, aluminium hydroxide 11.46g, and control reaction temperature is
115 DEG C, 6~8h of reaction time, iron, aluminium in material are substantially soluble in liquid phase；
S2, quaternization: reduction temperature is to 82 DEG C, addition calcium aluminate powder 33.72g progress quaternization, basicity 0.3,
1~2h of reaction time；
S3, hydrolysis, slaking reaction: reduce reaction temperature, sequentially add calcium dihydrogen phosphate 5.61g, deionized water 200mL into
Row hydrolysis, slaking reaction, control hydrolysis temperature are 70 DEG C, hydrolysis time 4h, and curing temperature is 65 DEG C, curing time 8h, preparation
Obtain bronzing polymeric aluminum sulfate iron liquid；
Wherein, product quality indicator are as follows: basicity: 16%；Active component: [Fe+Al]a+b=15.68%,
Fe2O318.33%, Al2O35.39%.
Embodiment 4:
The embodiment of the present invention 4 discloses a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron, use
Technical solution is as follows:
The polymeric aluminum sulfate iron, specific step is as follows for its preparation method:
S1, acid are molten: 200mL acid aluminum-cleaning wastewater is placed in cavitation reactor, ultrasonic, supersonic frequency 40KHz is opened,
And stir, mixing speed 400r/min, while being slowly added to the Waste Sulfuric Acid of 145mL, adjusting solution acidity with Waste Sulfuric Acid is
10mol/L, by total [Fe+Al]a+b:H2SO4Molar ratio 1:2.74 adds iron filings 137g, aluminium hydroxide 22.93g, control reaction temperature
Degree is 110 DEG C, 6~8h of reaction time, and the iron, aluminium in material are substantially soluble in liquid phase；
S2, quaternization: reduction temperature is to 80 DEG C, addition calcium hydroxide 12.64g progress quaternization, basicity 0.3,
1~2h of reaction time；
S3, hydrolysis, slaking reaction: reducing reaction temperature, sequentially adds phosphoric acid 2.35g, deionized water 200mL and carries out water
Solution, slaking reaction, control hydrolysis temperature are 70 DEG C, hydrolysis time 4h, and curing temperature is 55 DEG C, and curing time 8h is prepared
Bronzing polymeric aluminum sulfate iron liquid；
Wherein, product quality indicator are as follows: basicity: 21%；Active component: [Fe+Al]a+b=17.15%,
Fe2O320.76%, Al2O34.98%.
Embodiment 5:
The embodiment of the present invention 5 discloses a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron, use
Technical solution is as follows:
The polymeric aluminum sulfate iron, specific step is as follows for its preparation method:
S1, acid are molten: 200mL acid aluminum-cleaning wastewater is placed in cavitation reactor, ultrasonic, supersonic frequency 40KHz is opened,
And stir, mixing speed 400r/min, while being slowly added to the Waste Sulfuric Acid of 102mL, adjusting solution acidity with Waste Sulfuric Acid is 9mol/
L, by total [Fe+Al]a+b:H2SO4Molar ratio 1:2.78, adds iron filings 119g, aluminium hydroxide 20.94g, and control reaction temperature is
110 DEG C, 6~8h of reaction time, iron, aluminium in material are substantially soluble in liquid phase；
S2, quaternization: reduction temperature is to 80 DEG C, addition calcium aluminate powder 35.69g progress quaternization, basicity 0.4,
1~2h of reaction time；
S3, hydrolysis, slaking reaction: reduce reaction temperature, sequentially add calcium dihydrogen phosphate 5.81g, deionized water 200mL into
Row hydrolysis, slaking reaction, control hydrolysis temperature are 70 DEG C, hydrolysis time 4h, and curing temperature is 60 DEG C, curing time 8h, preparation
Obtain bronzing polymeric aluminum sulfate iron liquid；
Wherein, product quality indicator are as follows: basicity: 18%；Active component: [Fe+Al]a+b=16.54%,
Fe2O318.03%, Al2O37.43%.
Embodiment 6:
The embodiment of the present invention 6 discloses a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron, use
Technical solution is as follows:
The polymeric aluminum sulfate iron, specific step is as follows for its preparation method:
S1, acid are molten: 200mL acid aluminum-cleaning wastewater is placed in cavitation reactor, ultrasonic, supersonic frequency 40KHz is opened,
And stir, mixing speed 400r/min, while being slowly added to the Waste Sulfuric Acid of 145mL, adjusting solution acidity with Waste Sulfuric Acid is
10mol/L, by total [Fe+Al]a+b:H2SO4Molar ratio 1:2.81 adds bloodstone 133g, aluminum sulfate 21.97g, control reaction temperature
Degree is 120 DEG C, 6~8h of reaction time, and the iron, aluminium in material are substantially soluble in liquid phase；
S2, quaternization: reduction temperature is to 80 DEG C, addition calcium hydroxide 12.34g progress quaternization, basicity 0.2,
1~2h of reaction time；
S3, hydrolysis, slaking reaction: reducing reaction temperature, sequentially adds phosphoric acid 3.83g, deionized water 200mL and carries out water
Solution, slaking reaction, control hydrolysis temperature are 70 DEG C, hydrolysis time 4h, and curing temperature is 65 DEG C, and curing time 8h is prepared
Bronzing polymeric aluminum sulfate iron liquid；
Wherein, product quality indicator are as follows: basicity: 17%；Active component: [Fe+Al]a+b=16.63%,
Fe2O320.15%, Al2O34.79%.
Embodiment 7:
By polymeric aluminum sulfate iron liquid product produced by the present invention be applied to sanitary wastewater, and with commercially available aluminium polychloride
The treatment effect of PAC and polymeric aluminum sulfate iron PAFS compare, and selected sanitary wastewater is derived from Xining third sewage treatment
Factory, sewage quality such as table 1:
1 sanitary sewage water quality parameter of table
| pH | COD/(mg/L) | Turbidity/NTU |
| 7 | 245.68 | 238 |
Take a certain amount of self-control polyaluminium sulfate ferrous solution, commercially available aluminium polychloride (PAC) and bodied ferric sulfate (PFS)
Solid product is settled to the solution that mass fraction is 5% with deionized water dilution.Then it is put into respectively into three parts of sanitary wastewaters
Above-mentioned each 2ml of solution is stood after a certain period of time after stirring 10min, and supernatant is taken to analyze water quality, as a result such as table 2:
2 water purification agent of table handles sanitary sewage effect
| Embodiment | COD removal rate/% | Turbidity removal rate/% | The alumen ustum sedimentation time/min |
| Embodiment 1 | 45 | 90.36 | 6 |
| Embodiment 2 | 52 | 91.33 | 5 |
| Embodiment 3 | 50 | 89.16 | 5 |
| Embodiment 4 | 46 | 90.23 | 6 |
| Embodiment 5 | 54 | 93.65 | 4 |
| Embodiment 6 | 47 | 91.67 | 4 |
| It makes by oneself PAFS (average) | 49 | 91.07 | 5 |
| Commercially available PFS | 43 | 90.33 | 8 |
| Commercially available PAC | 39 | 79.41 | 10 |
As seen from the above table, self-control water purification agent has good effect to the removal of turbidity of sewage and COD, and effect is better than market
The PAC of upper sale, go turbid effect suitable with commercially available PFS, since the alumen ustum of generation is big and closely knit, the sedimentation time is better than commercially available
PAC and PFS.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (8)
1. a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron, which is characterized in that specific step is as follows:
S1, acid are molten: acid aluminum-cleaning wastewater is placed in cavitation reactor, opens ultrasound, and stir, mixing speed 400r/min,
It is slowly added to Waste Sulfuric Acid simultaneously, adjusts solution acidity, adds source of iron, silicon source, controls reaction temperature and reaction time, makes in material
Iron, aluminium be substantially soluble in liquid phase；
S2, quaternization: reducing temperature, and basifier is added and carries out quaternization, 1~2h of reaction time；
S3, hydrolysis, slaking reaction: reducing reaction temperature, sequentially adds stabilizer, deionized water is hydrolyzed, slaking reaction, control
Hydrolysis temperature processed is 70 DEG C, hydrolysis time 4h, and curing temperature is 55~70 DEG C, curing time 8h, and bronzing polymerization is prepared
Aluminium iron sulfate liquid.
2. a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron according to claim 1, feature exist
In by total [Fe+Al] in the step S1a+b:H2SO4Molar ratio 1:2.74~2.81 adds source of iron, silicon source.
3. a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron according to claim 1, feature exist
In the volume ratio of the acid aluminum-cleaning wastewater and Waste Sulfuric Acid that are added in the step S1 is 2:1.02~1.45, is adjusted with Waste Sulfuric Acid
Waste liquid acidity is 9~10mol/L.
4. a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron according to claim 1, feature exist
In source of iron is iron filings, any one or two kinds in bloodstone in the step S1, and silicon source is aluminium hydroxide, in aluminum sulfate
Any one or two kinds.
5. a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron according to claim 1, feature exist
In basifier is calcium aluminate powder, any one in calcium hydroxide in the step S2, and basicity is 0.2~0.4.
6. a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron according to claim 1, feature exist
In reduction temperature is to 80~85 DEG C in the step S2.
7. a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron according to claim 1, feature exist
In, stabilizer in the step S3 be calcium dihydrogen phosphate, any one in phosphoric acid.
8. a kind of method using acid aluminum-cleaning wastewater preparation polymeric aluminum sulfate iron according to claim 1, feature exist
In by PO in the step S34 3-:[Fe+Al]a+bMolar ratio is that 0.015~0.030:1 adds stabilizer.
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| CN110028106A (en) * | 2019-05-05 | 2019-07-19 | 江苏永葆环保科技有限公司 | Low aluminium bodied ferric sulfate of a kind of modification and preparation method thereof |
| CN110156056A (en) * | 2019-04-18 | 2019-08-23 | 新疆众和股份有限公司 | A method of special-alumina is prepared containing phosphorus waste liquid using corrosive aluminum foil |
| CN110540280A (en) * | 2019-10-12 | 2019-12-06 | 广东华锋碧江环保科技有限公司 | Water purifying agent and preparation method thereof |
| CN113880208A (en) * | 2021-10-26 | 2022-01-04 | 广州市芦苇环保科技有限责任公司 | Polymeric aluminum ferric sulfate composite water purifying agent and preparation process thereof |
| CN114432785A (en) * | 2021-12-13 | 2022-05-06 | 北京万邦达环保技术股份有限公司 | Method for coordinately treating and recycling waste ionic liquid |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110156056A (en) * | 2019-04-18 | 2019-08-23 | 新疆众和股份有限公司 | A method of special-alumina is prepared containing phosphorus waste liquid using corrosive aluminum foil |
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| CN110028106A (en) * | 2019-05-05 | 2019-07-19 | 江苏永葆环保科技有限公司 | Low aluminium bodied ferric sulfate of a kind of modification and preparation method thereof |
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| CN114432785A (en) * | 2021-12-13 | 2022-05-06 | 北京万邦达环保技术股份有限公司 | Method for coordinately treating and recycling waste ionic liquid |
| CN114432785B (en) * | 2021-12-13 | 2023-04-14 | 北京万邦达环保技术股份有限公司 | Method for coordinately treating and recycling waste ionic liquid |
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Application publication date: 20190329 |