CN105540778A - Polymeric aluminum ferric chloride flocculant preparation method - Google Patents
Polymeric aluminum ferric chloride flocculant preparation method Download PDFInfo
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- CN105540778A CN105540778A CN201410600478.8A CN201410600478A CN105540778A CN 105540778 A CN105540778 A CN 105540778A CN 201410600478 A CN201410600478 A CN 201410600478A CN 105540778 A CN105540778 A CN 105540778A
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- red mud
- preparation
- temperature
- filter residue
- flyash
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Abstract
The invention relates to a polymeric aluminum ferric chloride flocculant preparation method, and belongs to the field of water treatment agent preparation. In the prior art, red mud and fly ash are not utilized, and the environment is polluted. Based on the problems in the prior art, the invention provides a preparation method for preparing a polymeric aluminum ferric chloride flocculant by using red mud and fly ash as raw materials. According to the present invention, an acid and alkali combined method is used and red mud and fly ash are adopted as raw materials to prepare the polymeric aluminum ferric chloride flocculant and SiO2; and with the preparation method, the efficient utilization of red mud and fly ash is achieved, the prepared polymeric aluminum ferric chloride has high performance, and the product does not produce pollution.
Description
Technical field
The invention belongs to water conditioner preparation field.
Background technology
The water purification agent that China uses is mainly based on inorganic flocculating agent, and consumption is large, and water purification ability is weak.Aluminium iron polychloride is the important substitute products in this field, be widely used, and red mud and flyash all belongs to trade waste at present at water treatment field, containing Fe, Al in its composition, and has the features such as quantity discharged is large, serious environment pollution.
Summary of the invention
The object of the invention is with red mud and flyash for the method for aluminium iron polychloride floculant prepared by raw material.
The present invention is achieved by the following technical programs: a kind of aluminium iron polychloride floculant preparation method, red mud is added the hydrochloric acid that concentration is 6mol/L, at temperature is 90 DEG C, react 2.5h, filters and obtains red mud dissolution fluid and filter residue; Take flyash, add Na
2c0
3calcination activation 2h at temperature is 750 DEG C, adds the hydrochloric acid that concentration is 4mol/L after cooling, at temperature is 90 DEG C, react 6h, filters and obtains flyash dissolution fluid and filter residue; Na is added in flyash dissolution fluid
2cO
3, temperature is 60 ~ 70 DEG C, ensures that solution final pH is 2.5 ~ 3, adds the copolymerization of red mud dissolution fluid after reaction 1h, and continue insulated and stirred reaction 3h, static slaking, obtains aluminium iron polychloride.
By red mud filter residue and the mixing of flyash filter residue, add the obtained Na of NaOH solution reaction
2siO
3, through acidifying, calcining, obtained Powdered SiO
2.
The Powdered SiO of described preparation
2in process, add the ratio 5:l that NaOH solution concentration is 3mol/L, NaOH (mL) and filter residue (g), temperature of reaction 95 DEG C, reaction times 6h.
The present invention has following beneficial effect:
Achieve the resource reutilization of red mud and flyash, and preparation aluminium iron polychloride flocculating property comparatively inorganic flocculating agent is strong.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Specific embodiment: the present invention adopts using acid and alkali combination method, with red mud and flyash for raw material, prepares aluminium iron polychloride floculant and SiO
2, residue can produce material of construction, and processing cost is low, and pollution-free.
Concrete treating processes is as follows: get red mud, adds the hydrochloric acid that concentration is 6mol/L, at temperature is 90 DEG C, react 2.5h, filters the red mud dissolution fluid and filter residue that obtain containing Al, Fe; Take flyash, add Na
2c0
3calcination activation 2h at temperature is 750 DEG C, adds the hydrochloric acid that concentration is 4mol/L after cooling, at temperature is 90 DEG C, react 6h, filters the flyash dissolution fluid and filter residue that obtain containing Al, Fe; At polymerization stage, first to flyash dissolution fluid, (main component is A1
3+) in add Na
2cO
3, temperature is 60 ~ 70 DEG C, ensures that solution final pH is 2.5 ~ 3, and (main component is Fe to add red mud dissolution fluid after reaction 1h
3+) copolymerization, continue insulated and stirred reaction 3h, static slaking, obtains aluminium iron polychloride.
Two kinds of filter residues are merged, obtains Na with NaOH solution and its reaction
2siO
3solution, can obtain pulverous SiO through acidifying, calcination
2, the ratio 5:l of preparation temperature 95 DEG C, NaOH concentration 3mol/L, reaction times 6h, NaOH (mL) and filter residue (g), with this understanding, SiO
2solubility rate be 65%, prepared SiO
2the residue mainly metal oxide of indissoluble and SiO
2, can be used for producing non-burning brick and dam, road build, environmentally safe.
The aluminium iron polychloride of preparation and commodity aluminum chloride are done absorption property contrast, turbidity of wastewater is 85NTU, colourity 19.1 times, COD is 410mg/L, draws aluminum chloride turbidity removal rate 95.1%, COD clearance 83.81%, chroma removal rate 58%, aluminium iron polychloride turbidity removal rate 96.53%, COD clearance 85.2%, chroma removal rate 71%, flocculating property is strong.
Preparation method described in the embodiment of the present invention is with red mud and flyash for raw material, and achieve the utilization of resources, the polymerize aluminum chloride ferrum property of preparation is good, and achieves recycling to other product, environmentally safe.
Above content is the further description done the present invention in conjunction with concrete embodiment, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (3)
1. an aluminium iron polychloride floculant preparation method, is characterized in that: red mud is added the hydrochloric acid that concentration is 6mol/L, at temperature is 90 DEG C, react 2.5h, filters and obtains red mud dissolution fluid and filter residue; Take flyash, add Na
2c0
3calcination activation 2h at temperature is 750 DEG C, adds the hydrochloric acid that concentration is 4mol/L after cooling, at temperature is 90 DEG C, react 6h, filters and obtains flyash dissolution fluid and filter residue; Na is added in flyash dissolution fluid
2cO
3, temperature is 60 ~ 70 DEG C, ensures that solution final pH is 2.5 ~ 3, adds the copolymerization of red mud dissolution fluid after reaction 1h, and continue insulated and stirred reaction 3h, static slaking, obtains aluminium iron polychloride.
2. preparation method as claimed in claim 1, is characterized in that: by red mud filter residue and the mixing of flyash filter residue, adds the obtained Na of NaOH solution reaction
2siO
3, through acidifying, calcining, obtained Powdered SiO
2.
3. preparation method as claimed in claim 2, is characterized in that: the Powdered SiO of described preparation
2in process, add the ratio 5:l that NaOH solution concentration is 3mol/L, NaOH (mL) and filter residue (g), temperature of reaction 95 DEG C, reaction times 6h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410600478.8A CN105540778A (en) | 2014-10-31 | 2014-10-31 | Polymeric aluminum ferric chloride flocculant preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410600478.8A CN105540778A (en) | 2014-10-31 | 2014-10-31 | Polymeric aluminum ferric chloride flocculant preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105540778A true CN105540778A (en) | 2016-05-04 |
Family
ID=55820410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410600478.8A Pending CN105540778A (en) | 2014-10-31 | 2014-10-31 | Polymeric aluminum ferric chloride flocculant preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105540778A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106241888A (en) * | 2016-09-23 | 2016-12-21 | 潍坊中清精细化工有限公司 | A kind of technique utilizing slag from gasifying furnace to produce PAFC |
| CN109368752A (en) * | 2018-10-26 | 2019-02-22 | 昆明理工大学 | It is a kind of for handling the preparation method of the flocculant of organic wastewater |
| CN109809540A (en) * | 2017-11-20 | 2019-05-28 | 临沂大学 | A kind of poly silicate aluminium ferric flocculating agent and preparation method |
-
2014
- 2014-10-31 CN CN201410600478.8A patent/CN105540778A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106241888A (en) * | 2016-09-23 | 2016-12-21 | 潍坊中清精细化工有限公司 | A kind of technique utilizing slag from gasifying furnace to produce PAFC |
| CN109809540A (en) * | 2017-11-20 | 2019-05-28 | 临沂大学 | A kind of poly silicate aluminium ferric flocculating agent and preparation method |
| CN109809540B (en) * | 2017-11-20 | 2021-11-05 | 临沂大学 | Polysilicate aluminum ferric flocculant and preparation method thereof |
| CN109368752A (en) * | 2018-10-26 | 2019-02-22 | 昆明理工大学 | It is a kind of for handling the preparation method of the flocculant of organic wastewater |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160504 |
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| WD01 | Invention patent application deemed withdrawn after publication |