CN108217894A - A kind of preparation method and application of efficient defluorinate ferro-aluminum complex reagent - Google Patents
A kind of preparation method and application of efficient defluorinate ferro-aluminum complex reagent Download PDFInfo
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- CN108217894A CN108217894A CN201711324145.7A CN201711324145A CN108217894A CN 108217894 A CN108217894 A CN 108217894A CN 201711324145 A CN201711324145 A CN 201711324145A CN 108217894 A CN108217894 A CN 108217894A
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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
- C02F1/583—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing fluoride or fluorine compounds
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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
- C01G49/009—Compounds containing, besides iron, two or more other elements, with the exception of oxygen or hydrogen
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
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Abstract
The invention discloses a kind of preparation method and applications of efficient defluorinate ferro-aluminum complex reagent.Polymerisation occurs in acid condition using aluminium salt and molysite and prepares ferro-aluminum complex reagent, thus obtained ferro-aluminum complex reagent is used to handle fluoride waste, the fluorinion concentration in waste water can be made to stablize less than 1mg/L hereinafter, reaching three classes water gauge alignment request in water environment quality standard (GB3838 2002).The method mild condition of ferro-aluminum complex reagent is prepared, it is of low cost；The ferro-aluminum complex reagent is used for the processing of fluoride waste, and significant effect, and simple for process is time saving and energy saving, has good application prospect.
Description
Technical field
The present invention relates to field of waste water treatment more particularly to a kind of efficient defluorinate ferro-aluminum complex reagent preparation method and should
With.
Background technology
Fluorine is a kind of element that distributed pole is wide in geosphere, it is known that the fluorine-containing mineral in the earth's crust have more than 80 kinds, such as fluorite, ice
Spar, various fluoride salts, fluor-apatite etc..Micro fluorine play the role of to pre- anti-caries it is positive, because of the fluorine pair of dental surface
Bacterium in oral cavity, which generates the ganoid acid of dissolving, inhibiting effect, so as to reduce the generation of acid, the generation of pre- anti-caries, adult
The intake of daily fluoride is generally in 1.0~1.5mg.Industrially, fluorine is important industrial chemicals, compound extensive use
In aluminium metallurgy, coke, glass, plating, phosphate fertilizer, steel, chemical fertilizer, pesticide, organic synthesis chemical industry, electronics industry, atomic energy industry with
And oxygen difluoride, fluorination hydrazine, fluorinated refrigerant of Organic fluoride senior lubricant, propellant etc..
The health problem of the contamination hazard human body of fluorine in environment, be the problem of paying close attention to and pay attention to the most in global range it
One.Human body can suck fluorine ion by the modes such as various drinking-water, food and breathing, and 65% fluorine source in human body is in drinking
Water, remaining 35% fluorine source is in food and breathing.The high food of long-term drinking high-fluorine water, intake fluorinated volume, can influence even
The health of harmful to human.If tealeaves and marine food have higher fluorine content, even several times of other foods, empty sometimes
The process of refrigerastion such as tune, refrigerator are discharged into air, are absorbed through respiratory tract by human body.The fluorine of excess intake is concentrated mainly on tooth
On bone, destroy calcium, the phosphorus eubolism of human body, cause den tal fluorosis, textured bone, pain, joint hardening, tendon calcification,
The fluorosis of bone such as difficulty in walking or even the diseases such as meat fiber degeneration, cancer can be caused.Fluorine poisoning is once suffered from i.e. forever into disease,
Drug can only slow down aggravation.It shows according to investigations, the 2004-2010 whole nations have 31 provinces and cities, autonomous region, the municipalities directly under the Central Government all different
Degree there are endemic fluorosis, about 100,000,000 6 million people of population, especially northwest arid area are drunk there are about 70,000,000 people and are contained
The exceeded water of fluorine amount, leads to different degrees of fluorine poisoning.
Industry and mining give off a large amount of fluoride waste, waste residue and exhaust gas in process of production, and being related to industry mainly has aluminium electricity
Solution, steel, cement, brick and tile, ceramics, phosphate fertilizer, glass, semiconductor, pharmacy etc..These industries pollute the environment, to dynamic, plant
Object damages, and influences agricultural and animal husbandry production.Such as aluminum electrolysis industry can add in aluminum fluoride and ice crystal during production
Stone；Steel industry can add in fluorite in fluoride pollution remittance, cause to generate a large amount of fluorine-containing flue dust, metallurgical slag, waste water；Phosphate fertilizer industry
Used rock phosphate in powder, in production a part of fluorine can be excluded with exhaust gas, pollute environment；In glass, ceramics, cement industry production
Fluorine-containing raw material, such as fluorite, ice crystal, prodan can be also used in the process, can also generate a large amount of fluoride pollution；Semiconductor row
The raw materials such as hydrofluoric acid, ammonium fluoride that industry uses are the main sources of fluoride waste.When using fluoride-removing equipment, in industrial circulating water
High fluorine ion can react with the metallics in equipment, and equipment pipe is caused to accelerate corrosion, shortens making for equipment pipe
With the service life, increase cost of equipment maintenance.
In recent years, extensive work has been carried out in terms of fluoride wastewater treatment research both at home and abroad, in basic theory and fluorine removal work
It is had made some progress in skill, technique study.Common defluorination method has chemical precipitation method, coagulant sedimentation, electroosmose process, biochemistry
Method, electrocoagulation, hyperfiltration, ion-exchange, membrane separation process and absorption method.Wherein, chemical precipitation method is to high-concentration waste water
There is good effect, but its utilization rate is low, be easy to cause waste；Coagulant sedimentation has added amount of chemical few, and processing water is big
The advantages that, but defluorination effect is influenced by factors such as stirring condition and sedimentation times, and effluent quality is not sufficiently stable；Electroosmose process pair
Fluorine removing rate is high and stablizes, but water is required to pre-process, and equipment operation maintenance is costly；Biochemical process, which is generally used for processing, to be had
Machine fluoride waste, but its processing fluoride waste concentration is relatively low；Electrocoagulation and hyperfiltration have preferable defluorination effect, but locate
It manages costly；Ion-exchange is easy to operate to handling fluoride waste effect stability, but fluorine removal cost is higher, and introduces
Amine substance is restricted drinking removing fluor in water；Ion-exchange, membrane separation process are selectively relatively poor, removal ability
It is limited；Absorption method has the features such as high treatment effeciency, strong adsorption, but it is harsher to pH and temperature.It is although it follows that right
The processing method of fluoride waste has very much, but is difficult to have a kind of low to fluorine processing cost, the method for high treating effect.
CN104803522A discloses a kind of processing method of high sodium fluoride waste, and this method solve high sodium fluoride wastes
Lime slag sedimentation is difficult, goes out the problem of shipwreck is up to standard, and lime consumption is few (35-45g/L), and solid waste discharge amount is small, and water outlet fluorine can be steady
Surely 5mg/L is down to hereinafter, this method is suitble to high sodium salt fluoride waste, but this method whole process is relatively complicated, technical process is long, and
And the requirements at the higher level of depth fluorine removal cannot be met.CN104773877A discloses a kind of processing method of acidic fluoride-containing waste water, packet
Natural subsidence, filtering are included, adds in calcium hydroxide and adjusts pH value as 5~6, addition calcium hydroxide and the miscible fluid of aluminium polychloride
And adjust pH value and go out water fluoride content for 7~8, after filtering and can be down to 10mg/L hereinafter, this method is suitble to high fluorine content waste water, processing
Cost is higher, the long shortcoming of technical process, and cannot accomplish depth defluorination effect.CN 102126799A disclose a kind of electronics
The processing method of the fluorine-containing nitrogen-containing wastewater of industry, by first being added into waste water after chlorine twice plus the method for calcium salt, Neng Gouda
To the purpose for first removing fluorine removal after ammonia nitrogen, and effect stability is good, efficiently, quick.This method is suitble to ammonia nitrogen fluoride waste, and there are chlorine
The low bottom of gas utilization rate, cost are higher.
Currently as environmental requirement is more and more stringenter, according to country《Integrated wastewater discharge standard》(GB8978-1996), one
The mass concentration of fluorine ion should be less than 10mg/L in grade standard；For standards for drinking water quality (GB 5749-2006),
The mass concentration of table water environment (GB3838-2002) fluorine ion is required in below 1mg/L.The above method is in processing fluoride waste
In, it is difficult to accomplish 1mg/L hereinafter, and, operating cost is excessively high in existing physics, chemical wastewater defluorination method, fluorine removal condition is severe
The difficulties such as quarter, in addition, the research of existing bioanalysis removes the fluorine in waste water with single creature, however, biosorption technology exists
The shortcomings of industrialization is difficult, it is difficult to meet the needs of Vehicles Collected from Market.Membrane treatment process can reach this requirement, but film process at present
Technology investment construction and operation cost are high, and medium-sized and small enterprises are difficult to promote and apply, therefore seek a kind of cleaning, efficient, at low cost
Honest and clean deep treatment method is particularly important.
Currently have the preparation method of partially polymerized iron aluminium flocculating agent, but only used as flocculant, not fluorine removal medicine
Agent, CN102120623A disclose a kind of preparation method of polysilicate aluminium ferric flocculant, this method using ferrous sulfate heptahydrate as
Raw material, a kind of obtained polysilicate aluminium ferric flocculant, flocculability are better than existing industrial products, but whether effective to FLUORIDE REMOVAL IN WASTEWATER
Fruit has not been reported；CN102515330A discloses a kind of preparation method of polymeric aluminum ferric sulfate flocculating agent (liquid), and finished product can be used
In stain disease processing, but had not been reported to whether FLUORIDE REMOVAL IN WASTEWATER is effective.
Invention content
It is existing to overcome the difficulties such as excessively high, fluorine removal condition harshness of operating cost in existing physics, chemical wastewater defluorination method
There is bioanalysis research and the fluorine in waste water is removed with single creature, and the shortcomings of biosorption technology industrialization is difficult, it is existing
Defluorinating process be difficult to below 1mg/L.The present invention proposes a kind of method of ferro-aluminum complex reagent processing fluoride waste, to adopt
The fluoride wastes such as ore deposit, ore dressing, the total waste water in smeltery for process object, by ferro-aluminum complex reagent to the complexing of fluorine ion, hydrolysis,
Adsorption reaction realizes the fluoride waste of stable, the efficient miscellaneous multi-metal ingredient of advanced treating, ensures water safety.Currently
There is the preparation method of partially polymerized iron aluminium flocculating agent, but only used as flocculant, not fluorine removal medicament, proposed by the present invention
It is that a kind of novel ferro-aluminum is compound except fluorine reagent, after handling the fluorine-containing waste water in 2~30mg/L, fluorine content is stablized in water outlet
In 1mg/L hereinafter, the invention medicament is using simply, technological process is short, can be added directly medicament in the end of wastewater treatment, without
In addition equipment is invested to build, with good economic efficiency, fluorine ion reaches surface water environment (GB3838-2002) three after wastewater treatment
The requirement of class water quality standard.
The technical solution used in the present invention is：
Ferro-aluminum complex reagent, preparation method include the following steps：1) aluminium salt and molysite are dissolved in 0.2 by a certain percentage
It is 0.5~1.5 to carry out being acidified to pH value in the acid solution of~0.5mol/L, and acidificatoin time is slow added into chlorine in 15~30min
After salt carries out complex reaction, it is 50~90 DEG C to keep water-bath pot temperature, is stirred to react lower generation polymerisation, polymerization reaction time
For 60~90min, a certain amount of regulator is added in polymerization process, finally, with alkali adjust back pH value between 2~3 to get
Ferro-aluminum complex reagent.
Aluminium salt/the molysite is 5~20 according to molal weight ratio：1 adds in；The amount of the villaumite presses aluminium salt and villaumite
Molar ratio be 1~4:1 adds in；The amount of the regulator is added in the ratio of regulator/aluminium salt molar ratio 0.01~0.1.
The regulator is phosphoric acid, sodium dihydrogen phosphate, potassium dihydrogen phosphate, potassium dihydrogen phosphate, one kind in sodium carbonate or several
The composition of kind；The villaumite is the composition of one or more of sodium chloride, calcium chloride, potassium chloride, magnesium chloride；The aluminium salt
For aluminium chloride, aluminum sulfate, aluminum nitrate, alumina silicate, aluminium sulfide, aluminum phosphate, aluminum carboxylate, sodium metaaluminate, aluminum chlorhydrate, alum, polymerization
It is one or more in aluminium chloride；The molysite (or ferrous salt) is frerrous chloride, ferrous sulfate, ferric sulfate, polyaluminum sulfate
One or more of iron, iron chloride, ferrous nitrate, ferric nitrate, ferrous acetate, ferric oxalate, ferrous perchlorate, thiosulfuric acid iron
Composition.
Above-mentioned ferro-aluminum complex reagent is used to remove the fluorine ion in fluoride waste.
The fluoride waste can be the various fluoride wastes such as mining wastewater, beneficiation wastewater, smelting wastewater.
Specific defluorinating process includes：According to fluorine in wastewater concentration, according to ferro-aluminum complex reagent with giving up under stirring
Fluorine ion mass ratio is 20~100 in water:1 ratio adds in above-mentioned ferro-aluminum complex reagent；It is stirred to react 60 under room temperature~
90min is hydrolyzed reaction with lime readjustment pH to 9~11, separation of solid and liquid is stood after reacting 15~30min.
Fluorinion concentration in the fluoride waste of the before processing is in 2~30mg/L.
The beneficial effects of the present invention are：
1) present invention prepares ferro-aluminum complex reagent using synergistic principle, is sent out in acid condition using aluminium salt and molysite
Raw polymerisation, the medicament that preparation process is simple for process, aluminium salt and molysite are common for laboratory, of low cost, experimental implementation item
Part is mild, and the polymeric material of generation has the characteristics that complexing power is strong, excellent adsorption, in waste water is handled, reaches good effect
Fruit.
2) fluorinion concentration that a kind of ferro-aluminum complex reagent of the invention can be in wide scope and efficient processing waste water 2~
30mg/L, better than existing most of fluorine removal medicament, reaction is efficient, and removal effect is superior.
3) a kind of ferro-aluminum complex reagent of the invention processing waster water process step is simple, and the whole process time is short, can be in waste water
Processing end is added directly medicament, with good economic efficiency without in addition investing to build equipment, better than existing most of fluorine removal
Agent.
Description of the drawings
Fig. 1 is the ferro-aluminum complex reagent preparation technology flow chart of the present invention；
The ferro-aluminum complex reagent that Fig. 2 is the present invention handles fluoride waste process flow chart.
Specific embodiment
As shown in Figure 1, a kind of preparation method of efficient defluorinate ferro-aluminum complex reagent, step include：
1) it is aluminium salt and molysite is soluble in water, and acidification is carried out with acid, obtain acidifying solution；
2) water-soluble monovalence is added in acidifying solution or divalent villaumite carries out complex reaction；
3) it stirs above-mentioned solution and carries out polymerisation；
4) add in regulator in above-mentioned polymerization process, after with alkali adjust solution ph, obtain ferro-aluminum complex reagent.
Wherein, the molar ratio of aluminium salt/molysite is (5~20)：1；The molar ratio of aluminium salt/villaumite is (1~10):1；Adjustment
The molar ratio of agent/aluminium salt is 0.01~0.5.
Preferably, the molar ratio of aluminium salt/molysite is (8~12)：1；The molar ratio of aluminium salt/villaumite is (1~4):1；Adjustment
The molar ratio of agent/aluminium salt is 0.01~0.1.
Preferably, in step 1) acidifying solution pH=0.5~1.5, acidificatoin time is：15~30min.
Preferably, the temperature of polymerisation is in step 2)：50~90 DEG C, the time of polymerisation is：60~90min.
Preferably, pH=2~3 in step 3).
Preferably, aluminium salt is selected from aluminium chloride, aluminum sulfate, aluminum nitrate, aluminium sulfide, aluminum phosphate, aluminum carboxylate, sodium metaaluminate, salt
At least one of sour aluminium, alum, aluminium polychloride.
Preferably, molysite is selected from frerrous chloride, ferrous sulfate, ferric sulfate, bodied ferric sulfate, iron chloride, ferrous nitrate, nitre
At least one of sour iron, ferrous acetate, ferric oxalate, ferrous perchlorate, thiosulfuric acid iron.
Preferably, villaumite is selected from least one of sodium chloride, calcium chloride, potassium chloride, magnesium chloride.
Preferably, regulator in phosphoric acid, sodium dihydrogen phosphate, disodium hydrogen phosphate, potassium dihydrogen phosphate, sodium carbonate at least
It is a kind of.
As shown in Fig. 2, a kind of technique for handling fluoride waste, step include：
1) ferro-aluminum complex reagent is added in fluoride waste and carries out complex reaction；
2) Ca (OH) is added in2Reaction is hydrolyzed, sedimentation separation obtains purified water.
Preferably, the mass ratio of ferro-aluminum complex reagent and fluorine ion is in step 1)：(20~100)：1.
It is further preferred that the mass ratio of ferro-aluminum complex reagent and fluorine ion is in step 1)：(20~50)：1.
Preferably, Ca (OH) is added in step 2)2It is 9~11 to make solution ph.
Preferably, ferro-aluminum complex reagent and Ca (OH)2Mass ratio be 2：1.
Preferably, the concentration of waste water fluorine ion is between 2~30mg/L.
The specific steps are：
1) according to fluorinion in waste water concentration, according to ferro-aluminum complex reagent and fluorinion in waste water quality under stirring
Than being 20~100:1 ratio adds in ferro-aluminum complex reagent.
2) 60~90min is stirred to react under room temperature.
3) reaction is hydrolyzed with lime readjustment pH to 9~11, standing separation of solid and liquid must purify after reacting 15~30min
Water.
Lime in step 3) has this experiment fluorine removal facilitation, and builds a suitable pH range and reacted,
And its order of addition can generate defluorination effect and significantly affect.
Embodiment is enumerated further below so that the present invention will be described in detail.It will similarly be understood that following embodiment is served only for this
Invention is further described, it is impossible to be interpreted as limiting the scope of the invention, those skilled in the art are according to the present invention
Some nonessential modifications and adaptations that the principle of elaboration is made all belong to the scope of protection of the present invention.
By of the invention, " a kind of efficient defluorinate ferro-aluminum is compound for the iron aluminium complex reagent used in following Application Example
The preparation method of reagent " is prepared.
Concrete application embodiment 1：
Choose certain Mineral Processing Enterprises mining wastewater, fluorine-containing 2~5mg/L, receiving water body adjacent to drinking water source protection zone, fluorine from
Son requirement reaches outer could arrange below surface water environment (GB3838-2002) three classes water quality standard 1mg/L, and fluorine removal step is as follows：
1) by 50~200g/m3Injected volume adds in ferro-aluminum complex reagent in fluoride waste, is stirred to react 15min；
2) lime is added in above-mentioned solution and makes pH value of solution=8~9, reaction, sedimentation separation, gained filtrate is hydrolyzed
(purified water) carries out fluorinion concentration measure, and filter residue carries out safe disposal.
Cost budgeting：By 300 yuan/ton of lime cost, 1800 yuan/ton of ferro-aluminum complex reagent cost, COMPREHENSIVE CALCULATING processing is originally
It is 0.64 yuan/m to test fluoride waste to required cost up to standard3, specific ferro-aluminum complex reagent and lime injected volume are discharged fluorine ion
Concentration, removal rate and cost data see the table below 1：
1 each reagent dosage of table and cost
It is that comparison ferro-aluminum complex reagent uses aluminium salt class and ferro-aluminum composite salt defluorination effect with simple, spy uses sulfuric acid
Aluminium, aluminium polychloride, alum and polymeric aluminum sulfate iron (PAFS), polyaluminum ferric chloride (PAFC), polymeric aluminium ferrum silicate
(PSAF) fluorine removal processing is carried out to this mining wastewater, effect is as shown in table 2 below：
The aluminium salt defluorination effect in the market of table 2
Note：1st, raw water fluorinion concentration：4.5mg/L；2nd, in table 2 medicament used be market purchasing common medicament.
According to result above：
1) the above-mentioned six kinds of reagents of use, either single aluminium salt or aluminium complex salt, even if increase amount of reagent can not incite somebody to action
Fluorine is reduced within 1mg/L；
2) in above-mentioned six groups of experiments, with the increase of added amount of chemical, remaining fluorine content reduces in water, but tends to
Stablize；
3) polymeric aluminum sulfate iron (PAFS) effect is better than other five kinds, and polymeric aluminium ferrum silicate removal effect is worst, but commercially available
Polymeric ferric aluminum reagent be not achieved the present invention advanced treating effect.
Concrete application embodiment 2：
The total waste water of certain smelting enterprise, fluorine-containing 10~20mg/L are located in the environmentally sensitive areas that two provinces have a common boundary, fluorine ion requirement
Reach and outer could be arranged below surface water environment (GB3838-2002) three classes water quality standard 1mg/L, fluorine removal step is as follows：
1) by 600~750g/m3Injected volume adds in ferro-aluminum complex reagent in fluoride waste, is stirred to react 20min；
2) lime is added in above-mentioned solution and makes pH value of solution that reaction, sedimentation separation, gained filtrate be hydrolyzed to 10.0
(purified water) measures fluorinion concentration, and filter residue carries out safe disposal.
Shown in specific tables of data 3.Cost budgeting：By 300 yuan/ton of lime cost, 1800 yuan of ferro-aluminum complex reagent cost/
Ton, it is 1.68~1.8 yuan/m that COMPREHENSIVE CALCULATING, which handles this experiment fluoride waste to required cost up to standard,3。
3 added amount of chemical of table and cost
Concrete application embodiment 3：
Certain enterprise's beneficiation wastewater, fluorine-containing 20~30mg/L, adjacent to aquaculture area, fluorine ion requires to reach ground storage water body
Below table water environment (GB3838-2002) three classes water quality standard 1mg/L outer could be arranged, and fluorine removal step is (waste water divides double diffusion)：
First segment：
1) by 850~1000g/m3Injected volume adds in ferro-aluminum complex reagent in fluoride waste, is stirred to react 30min；
2) lime is added in above-mentioned solution and pH value of solution is made reaction, sedimentation separation to be hydrolyzed, filtrate carries out to 10.0
After first segment processing, fluorinion concentration is in 2~5mg/L；
Second segment：
3) by 50~200g/m3Injected volume adds in ferro-aluminum complex reagent above-mentioned through the first segmentation fluorine removal treated filtrate
In, it is stirred to react 30min；
4) lime is added in above-mentioned solution and solution PH is made reaction, sedimentation separation to be hydrolyzed, filtrate measures to 11.0
Fluorinion concentration, filter residue carry out safe disposal.
Shown in specific tables of data 4.Through analysis, filtrate fluorinion concentration can be steadily in 0.22~0.87mg/L, water outlet
Table water three classes discharge standard.
Cost budgeting：By 300 yuan/ton of lime cost, 1800 yuan/ton of ferro-aluminum complex reagent cost, this experiment of COMPREHENSIVE CALCULATING
It is 2.67~2.91 yuan/m to handle fluoride waste to required reagent cost up to standard3。
4 added amount of chemical of table and cost
Claims (10)
1. a kind of preparation method of efficient defluorinate ferro-aluminum complex reagent, step include：
1) it is aluminium salt and molysite is soluble in water, and acidification is carried out with acid, obtain acidifying solution；
2) water-soluble monovalence is added in acidifying solution or divalent villaumite carries out complex reaction；
3) it stirs above-mentioned solution and carries out polymerisation；
4) add in regulator in above-mentioned polymerization process, after with alkali adjust solution ph, obtain ferro-aluminum complex reagent.
Wherein, the molar ratio of aluminium salt/molysite is (5~20)：1；The molar ratio of aluminium salt/villaumite is (1~10):1；Regulator/aluminium
The molar ratio of salt is 0.01~0.5.
2. a kind of preparation method of efficient defluorinate ferro-aluminum complex reagent according to claim 1, it is characterised in that：Step 1)
PH=0.5~1.5 of middle acidifying solution, acidificatoin time are：15~30min.
3. a kind of preparation method of efficient defluorinate ferro-aluminum complex reagent according to claim 1, it is characterised in that：Step 2)
The temperature of middle polymerisation is：50~90 DEG C, the time of polymerisation is：60~90min.
4. a kind of preparation method of efficient defluorinate ferro-aluminum complex reagent according to claim 1, it is characterised in that：Step 2)
In villaumite be selected from sodium chloride, calcium chloride, potassium chloride, at least one of magnesium chloride.
5. a kind of technique for handling fluoride waste, step include：
1) ferro-aluminum complex reagent is added in fluoride waste and carries out complex reaction；
2) Ca (OH) is added in2Reaction is hydrolyzed, sedimentation separation obtains purified water；
Wherein, ferro-aluminum complex reagent is prepared by Claims 1 to 4 any one of them method.
6. a kind of technique for handling fluoride waste according to claim 5, it is characterised in that：The compound examination of ferro-aluminum in step 1)
The mass ratio of agent and fluorine ion is：(20~100)：1.
7. a kind of technique for handling fluoride waste according to claim 6, it is characterised in that：The compound examination of ferro-aluminum in step 1)
The mass ratio of agent and fluorine ion is：(20~50)：1.
8. a kind of technique for handling fluoride waste according to claim 5, it is characterised in that：Ca (OH) is added in step 2)2
It is 9~11 to make solution ph.
9. a kind of technique for handling fluoride waste according to claim 5, it is characterised in that：Ferro-aluminum complex reagent and Ca
(OH)2Mass ratio be 2：1.
10. according to a kind of technique for handling fluoride waste of claim 5~9 any one of them, it is characterised in that：Fluorine in wastewater
The concentration of ion is between 2~30mg/L.
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| CN110204027A (en) * | 2019-05-25 | 2019-09-06 | 天津金辰博科环保科技发展有限公司 | A kind of compound defluorinating agent and preparation method thereof |
| CN111410281A (en) * | 2020-04-01 | 2020-07-14 | 顺景园智能装备科技发展(深圳)有限公司 | Double-component water treatment agent and application method thereof |
| CN111410366A (en) * | 2020-04-01 | 2020-07-14 | 顺景园智能装备科技发展(深圳)有限公司 | Wastewater treatment system and treatment process |
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| CN111410366A (en) * | 2020-04-01 | 2020-07-14 | 顺景园智能装备科技发展(深圳)有限公司 | Wastewater treatment system and treatment process |
| CN111547804A (en) * | 2020-05-15 | 2020-08-18 | 苏州清控环保科技有限公司 | Composite defluorinating agent for industrial wastewater, preparation method and method for defluorinating industrial wastewater |
| CN111732176A (en) * | 2020-08-12 | 2020-10-02 | 郑州恒昊光学科技有限公司 | Defluorination flocculant for filtering out fluorine ions in frosting waste liquid and use method thereof |
| CN114751541A (en) * | 2021-12-17 | 2022-07-15 | 重庆新氟科技有限公司 | Device and method for continuously and deeply treating fluorine-containing wastewater |
| CN114920254A (en) * | 2022-04-27 | 2022-08-19 | 厦门兑泰新材料科技有限公司 | Method for preparing polysilicate aluminum ferric chloride sulfate by using waste alunite tailings |
| CN114920254B (en) * | 2022-04-27 | 2023-09-12 | 厦门兑泰新材料科技有限公司 | Method for preparing polysilicic acid aluminum ferric sulfate chloride from abandoned alunite tailings |
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