CN106881062A - A kind of preparation method of the magnesium hydroxide-flyash built agent for processing fluoride waste - Google Patents
A kind of preparation method of the magnesium hydroxide-flyash built agent for processing fluoride waste Download PDFInfo
- Publication number
- CN106881062A CN106881062A CN201510945285.0A CN201510945285A CN106881062A CN 106881062 A CN106881062 A CN 106881062A CN 201510945285 A CN201510945285 A CN 201510945285A CN 106881062 A CN106881062 A CN 106881062A
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- CN
- China
- Prior art keywords
- magnesium hydroxide
- flyash
- preparation
- built agent
- adsorbent
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/42—Materials comprising a mixture of inorganic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Processing Of Solid Wastes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a kind of preparation method of the magnesium hydroxide-flyash built agent for processing fluoride waste.Specific implementation step of the present invention is as follows：1st, the preparation of adsorbent：With Adlerika as raw material, alkaline solution is added under stirring constant temperature, be 12 to solution pH value, filtering, drying, grinding obtains powdered magnesium hydroxide adsorbent.2nd, the preparation of formulation agents：Flyash and the magnesium hydroxide for preparing are stored in dry container, closed preservation, time-division another name amount certain mass to be used, the two mixing is made compound adsorbent.Alkaline solution used herein is NaOH solution, and stirring thermostat temperature is 40 DEG C~50 DEG C, and drying temperature is 100~130 DEG C, the quality of magnesium hydroxide and flyash in process 2, and it is 1 to match:1.Magnesium hydroxide-flyash built agent prepared by the present invention reduces the technical requirements to raw material, and time-saving and efficiency is with low cost, and process is simple can effectively realize the treatment of fluoride waste.
Description
Technical field
The invention belongs to field of waste water treatment, more particularly to a kind of magnesium hydroxide-fine coal for processing fluoride waste
The preparation method of grey built agent.
Background technology
With fluorine and its compound production, synthesize increasing, the waste water of all polyfluorinated organic industrial and commercial bank's industry discharges
In contain substantial amounts of fluorine ion, bring serious problem of environmental pollution, therefore fluoride waste is controlled
Reason research is increasingly subject to attention both at home and abroad.
At present, the processing method for fluoride waste mainly has chemical precipitation method, flocculent precipitation and absorption
Method.Absorption method have compared with the precipitation method have a wide range of application, simple to operate, processing speed is fast, effect
Well, the advantages of stable water outlet.Cheap, the efficient adsorbent of selection is always the emphasis of absorption method research.
Magnesium hydroxide the advantages of adsorptivity is very strong, is led so that its particle is fine, specific surface area big in environmental protection
There is important application in domain, enjoys the attention of numerous researchers and the producer, but the extremely difficult filtering of magnesium hydroxide
Shortcoming also limit its extensive use.Current magnesium hydroxide is mainly used in the treatment of heavy metal wastewater thereby,
Application study in fluoride wastewater treatment is considerably less.
Flyash is the solid waste in thermal power plant, and with cellular structure, specific surface area is larger, has
Very strong chemisorbed and physical absorption performance, is extraordinary waste water cleaning agent, but it is in application process
In have that consumption is big, high-quality fly ash is short, the shortcomings of fallen behind using technology and equipment.If can solve
These problems, realize the recycling of flyash, will be significant.
The content of the invention
In order to meet the process demand of existing fluoride waste, the reasonable utilization and configuration of resource are realized, solved
Efficiency present in existing fluoride wastewater treatment process is low, and the problems such as resource scarcity, the present invention provides a kind of
Process the preparation method of the magnesium hydroxide-flyash built agent of fluoride waste.
The purpose of the present invention is reached by following measures：The built agent is divided into two steps and is prepared
1), the preparation of adsorbent：With Adlerika as raw material, add alkalescence molten under stirring constant temperature
Liquid, is 12 to solution pH value, and filtering, drying, grinding obtains powdered magnesium hydroxide adsorbent.
2), the preparation of formulation agents：Flyash and the magnesium hydroxide for preparing are stored in dry container,
Closed preservation, time-division another name amount certain mass to be used, the two mixing is made compound adsorbent.
Further, alkaline solution selected in the preparation process is that alkaline solution is NaOH solution,
Its preferred concentration 2mol/L, the pH value that reaction solution is finally reached is 12.
Further, constant temperature is 40 DEG C~50 DEG C in the preparation process, and preferred scheme is 40 DEG C of
Further, the drying temperature of magnesium hydroxide adsorbent is 100~130 DEG C in the preparation process,
Preferred scheme is 120 DEG C.
Further, in the preparation process, magnesium hydroxide is 1 with the quality proportioning of flyash:1
Beneficial effect：Present invention reduces the technical requirements to raw material, flyash is set to have obtained rational money
Source utilizes, and the technological requirement of production is reduced, while the magnesium hydroxide for obtaining-flyash built agent quality is steady
Fixed, advantages of good adsorption effect effectively realizes the process problem of fluoride waste, while solving single adsorption
Agent sad filter present in treatment fluoride waste process, consumption are big, inadequate resource, and technology and equipment falls
The present situation such as afterwards, the lifting for reasonable distribution resource and industry technology plays an important roll.
Specific embodiment
With reference to embodiment, the present invention is described in detail.
In the present embodiment, there is provided a kind of preparation of the magnesium hydroxide-flyash built agent for processing fluoride waste
Method.The preparation process is divided into two steps
1st, the preparation of adsorbent：With Adlerika as raw material, alkaline solution is added under stirring constant temperature,
It is 12 to solution pH value, filtering, drying, grinding obtains powdered magnesium hydroxide adsorbent.
2nd, the preparation of formulation agents：Flyash and the magnesium hydroxide for preparing are stored in dry container,
Closed preservation, time-division another name amount certain mass to be used, the two mixing is made compound adsorbent.
Alkaline solution is NaOH solution used in process of the present invention 1, and stirring thermostat temperature is
40 DEG C~50 DEG C, drying temperature is 100~130 DEG C, the matter of magnesium hydroxide and flyash in the process 2
Amount, it is 1 to match:1.
Embodiment
By 100mL concentration for the MgSO4 solution of 1mol/L is placed in 4 mouthfuls of flasks of 500mL,
The NaOH of 2mol/L is instilled under 40 DEG C of constant temperature while stirring, untill solution ph reaches 12,
Dried at 120 DEG C after filtering, grind into powder.Flyash and the magnesium hydroxide for preparing are stored in dry
In dry container, closed preservation, by flyash and magnesium hydroxide in mass ratio 1:1 compounding, that is, be made compound
Adsorbent.
To 50mL fluorine ions mass concentration for the fluoride waste of 40mg/L adds 1.2g magnesium hydroxides-powder
Coal ash built agent, mixing time is 60min, is determined through fluoride ion selective electrode method, fluoride ion removing
Rate reaches 79% or so, and treatment effect is excellent
Above content is the further description done to the present invention with reference to optimal technical scheme, it is impossible to recognized
The specific implementation of fixed invention is only limitted to these explanations.To general technical staff of the technical field of the invention
For, on the premise of design of the invention is not departed from, simple deduction can also be made and replaced, all
Protection scope of the present invention should be considered as.
Claims (4)
1. it is a kind of process fluoride waste magnesium hydroxide-flyash built agent preparation method, it is characterised in that
The built agent is divided into two steps and is prepared
1), the preparation of adsorbent：With Adlerika as raw material, add alkalescence molten under stirring constant temperature
Liquid, is 12 to solution pH value, and filtering, drying, grinding obtains powdered magnesium hydroxide adsorbent.
2), the preparation of formulation agents：Flyash and the magnesium hydroxide for preparing are stored in dry container,
Closed preservation, time-division another name amount certain mass to be used, the two mixing is made compound adsorbent.
Used in the process 1 alkaline solution be NaOH solution, stirring thermostat temperature be 40 DEG C~
50 DEG C, drying temperature is 100~120 DEG C of temperature, the quality of magnesium hydroxide and flyash in the process 2
Match is 1:1.
2. a kind of magnesium hydroxide-flyash built agent for processing fluoride waste according to claim 1
Preparation method, it is characterised in that alkaline solution is NaOH solution, reaction used in the process 1
Mixed liquor pH value is controlled 12.
3. a kind of magnesium hydroxide-flyash built agent for processing fluoride waste according to claim 1
Preparation method, it is characterised in that it is 40 DEG C~50 DEG C that thermostat temperature is stirred in the process 1, drying temperature
It is 100~130 DEG C to spend, and is conducive to the magnesium hydroxide adsorbent powder stablized.
4. according to claim 1 it is a kind of process fluoride waste magnesium hydroxide-flyash built agent system
Preparation Method, it is characterised in that magnesium hydroxide is 1 with the quality proportioning of flyash:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510945285.0A CN106881062A (en) | 2015-12-16 | 2015-12-16 | A kind of preparation method of the magnesium hydroxide-flyash built agent for processing fluoride waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510945285.0A CN106881062A (en) | 2015-12-16 | 2015-12-16 | A kind of preparation method of the magnesium hydroxide-flyash built agent for processing fluoride waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106881062A true CN106881062A (en) | 2017-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510945285.0A Pending CN106881062A (en) | 2015-12-16 | 2015-12-16 | A kind of preparation method of the magnesium hydroxide-flyash built agent for processing fluoride waste |
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| CN (1) | CN106881062A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180492A (en) * | 2019-04-17 | 2019-08-30 | 中节能（合肥）可再生能源有限公司 | A kind of active filter and its preparation method and application for removing magnesium ion |
| CN110961074A (en) * | 2019-10-11 | 2020-04-07 | 王永红 | Method for treating high-fluorine-content wastewater by using fly ash |
| CN112250090A (en) * | 2020-11-01 | 2021-01-22 | 湖南顺华锂业有限公司 | Production method for deeply removing fluorine in lithium sulfate solution |
-
2015
- 2015-12-16 CN CN201510945285.0A patent/CN106881062A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180492A (en) * | 2019-04-17 | 2019-08-30 | 中节能（合肥）可再生能源有限公司 | A kind of active filter and its preparation method and application for removing magnesium ion |
| CN110961074A (en) * | 2019-10-11 | 2020-04-07 | 王永红 | Method for treating high-fluorine-content wastewater by using fly ash |
| CN112250090A (en) * | 2020-11-01 | 2021-01-22 | 湖南顺华锂业有限公司 | Production method for deeply removing fluorine in lithium sulfate solution |
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Application publication date: 20170623 |