CN104773785B - A kind of method removing fluorine ions in water body - Google Patents
A kind of method removing fluorine ions in water body Download PDFInfo
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- CN104773785B CN104773785B CN201510216906.1A CN201510216906A CN104773785B CN 104773785 B CN104773785 B CN 104773785B CN 201510216906 A CN201510216906 A CN 201510216906A CN 104773785 B CN104773785 B CN 104773785B
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Abstract
The invention provides a kind of method removing fluorine ions in water body, comprise the following steps：First, by after aluminum sludge air drying levigate to granularity be 1mm～5mm；2nd, after aluminum mud being cleaned with pure water, it is soaked in dilute sulfuric acid, then filtered and the filtering residue after filtering is added to activation in activator, filtered again afterwards and the filtering residue after filtering is placed in Muffle furnace, it is incubated 0.5h～1h, the aluminum mud after being activated under conditions of temperature is 500 DEG C～550 DEG C；3rd, aluminum mud is added in the water body containing fluorion, stands 50min～100min after stirring 10min～20min, then filtered, collect filtrate, obtain the water body of Natural zeolite.The present invention is using the aluminum sludge absorption fluorine removal after activation, simple to operate, easy, efficient, is that vast fluorine disease lesion provides a kind of new defluorination method, drinking water condition for improvement especially prevents fluorosiss to have important value.
Description
Technical field
The invention belongs to Environmental pollution and control technical field, it is related to water technology and in particular to a kind of remove water body
The method of middle fluorion.
Background technology
Recently as industry and rapid economic development, water pollution is also increasingly severe.Production due to many industries
Cheng Douhui is related to fluoride or produces fluoride, such as the industry such as the exploitation of fluorine-containing Ore, metal smelt, plating, pesticide, chemical industry,
Fluorine has become one of most frequent pollutant in entrance water body, and pollution has the trend going from bad to worse, and fluoride ion in drinking water is dense
The exceeded serious physical and mental health that have impact on the people of degree, so it is extremely urgent to remove fluorine ions in water body.
Fluorine ions in water body minimizing technology mainly has chemical precipitation method, coagulation-flocculent precipitation, electrocoagulation, electrodialysis
Method, ion exchange, absorption method etc..Wherein chemical precipitation method and coagulation-coagulant sedimentation add aluminum soluble salt in water, remove
Fluorine process can remain a large amount of aluminium ions in water body, and excessive edible aluminium salt can produce very big injury to human body, and at major part
The drinking water standard of country is not reached, so being less used after reason.Process electrocoagulation, the electroosmose process of low concentration fluorinated water
And hyperfiltration is although decrease aluminium ion to the injury of human body and body refuse amount, but but increased equipment cost,
Energy consumption, and process specifications are high.
In terms of document report, not yet find the activated process to aluminum mud, for processing the report of fluorine ions in water body.
Content of the invention
The technical problem to be solved is for above-mentioned the deficiencies in the prior art, provides a kind of removal in water body
The method of fluorion.The method is using the aluminum sludge absorption fluorine removal after activation, simple to operate, easy, efficient, is vast fluorine disease disease
Area provides a kind of new defluorination method, and drinking water condition for improvement especially prevents fluorosiss to have important value.
For solving above-mentioned technical problem, the technical solution used in the present invention is：A kind of method removing fluorine ions in water body,
It is characterized in that, the method comprises the following steps：
Step one, by after aluminum sludge air drying levigate to granularity be 1mm～5mm；Described aluminum mud purifies work for waterworks
The aluminium-containing sludge that sequence produces；
Step 2, will be levigate in step one after aluminum mud with pure water clean after, be placed in concentration be 0.1mol/L～
Soak 1h～2h in the dilute sulfuric acid of 0.3mol/L, then filtered and the filtering residue after filtering is added to activation 1h in activator
～3h, is filtered again afterwards and the filtering residue after filtering is placed in Muffle furnace, the condition being 500 DEG C～550 DEG C in temperature
Lower insulation 0.5h～1h, the aluminum mud after being activated；The volume of described dilute sulfuric acid is 3 times～10 times of aluminum sludge volume, institute
The volume stating activator is 3 times～5 times of aluminum sludge volume, and described activator is polyaluminium aluminum water solution, aluminum sulfate is water-soluble
Liquid or aluminum chloride aqueous solution；
Step 3, by step 2 activate after aluminum mud be added in the water body containing fluorion, stirring 10min～
Stand 50min～100min after 20min, then filtered and the filtrate after filtering is collected, obtain Natural zeolite
Water body；The addition of described aluminum mud is 0.08%～0.25% of the Water quality containing fluorion.
A kind of method of above-mentioned removal fluorine ions in water body is it is characterised in that aluminum mud after levigate in step one
Granularity is 2mm.
A kind of method of above-mentioned removal fluorine ions in water body is it is characterised in that aluminium polychlorid water described in step 2
The mass percent concentration of solution, aluminum sulfate aqueous solution and aluminum chloride aqueous solution is 5%～15%.
A kind of method of above-mentioned removal fluorine ions in water body is it is characterised in that activator described in step 2 is polymerization
Aluminum chloride aqueous solution.
A kind of method of above-mentioned removal fluorine ions in water body is it is characterised in that the concentration of dilute sulfuric acid described in step 2
For 0.15mol/L.
A kind of method of above-mentioned removal fluorine ions in water body is it is characterised in that the addition of aluminum mud described in step 3
Amount is 0.21% of the Water quality containing fluorion.
The present invention compared with prior art has advantages below：
1st, the present invention is a kind of method removing Natural zeolite using the aluminum mud after activation, and the aluminum mud through overactivation can be made
For economic, applicable, the efficient de-fluoridation adsorbent of one kind, it can remove the fluorion in drinking water, makes Funing tablet reach country's drink
While water supply standard, and the aluminum mud of waterworks precipitation can secondary be utilized.Aluminum mud is derived from the purification of waterworks
Operation, this mud is mainly formed by the spoil disposal water of sedimentation tank and the backwash draining in filter tank, and the main component in mud is
Float, organic matter and add the coagulant in water body, the main component of coagulant is aluminium polychlorid (PAC) and poly- third
Acrylamide (PAM).The present invention is using the aluminum sludge absorption fluorine removal after activation, simple to operate, easy, efficient, is vast fluorine disease disease
Area provides a kind of new defluorination method, and drinking water condition for improvement especially prevents fluorosiss to have important value.Therefore
The present invention to preventing and treating endemic fluorosises (as skeletal fluorosis, dental fluorosis etc.) and improves people's health situation and has vital meaning
Justice.
2nd, the present invention removes Natural zeolite using the aluminum mud after activation as adsorbent, and the clearance of fluorion is up to 80%
More than, removal efficiency is high.
3rd, method of the present invention process is simple, and low cost of manufacture is it is easy to popularization and application.
4th, aluminum mud after high-temperature activation for the present invention is as adsorbent, be difficult to bring in water body soluble aluminum from
Son, can avoid the injury that excessive edible aluminium salt produces to human body.
5th, the present invention solves the place to go of alum sludge, decreases the pollution to environment for the mud；
6 present invention obtains static lower aluminum mud removes the technological parameter of fluorion in eliminating water.
With reference to embodiment, the present invention is described in further detail.
Specific embodiment
Embodiment 1
The method that the present embodiment removes fluorine ions in water body comprises the following steps：
Step one, by after aluminum sludge air drying levigate to granularity be 2mm；Described aluminum mud produces for waterworks cleaning procedure
Aluminium-containing sludge；
Step 2, will be levigate in step one after aluminum mud with pure water clean after, be placed in concentration be 0.15mol/L dilute sulfur
Soak 1h in acid, then filtered and the filtering residue after filtering is added to activation 2h in activator, filtered again afterwards
And the filtering residue after filtering is placed in Muffle furnace, it is incubated 0.5h under conditions of temperature is 500 DEG C, the aluminum after being activated is dirty
Mud；The volume of described dilute sulfuric acid is 5 times of aluminum sludge volume, and the volume of described activator is 4 times of aluminum sludge volume, described work
The polyaluminium aluminum water solution that agent is 10% for mass percent concentration；
Step 3, by step 2 activate after aluminum mud be added in the water body containing fluorion, stirring 15min after quiet
Put 60min, then filtered, collect filtrate, obtain the water body of Natural zeolite；The addition of described aluminum mud is containing fluorine
The 0.21% of the Water quality of ion.
After testing, through the content of fluoride ion in the present embodiment before processing water body be 2.50mg/L, through the present embodiment process after
Fluorion in water body is down to 0.16mg/L, and the clearance of fluorion is up to 93.6%.It can thus be appreciated that the present embodiment goes using work
Aluminum mud after change removes Natural zeolite as adsorbent, and removal efficiency is high, and removal effect is good.
Embodiment 2
The method that the present embodiment removes fluorine ions in water body comprises the following steps：
Step one, by after aluminum sludge air drying levigate to granularity be 3mm；Described aluminum mud produces for waterworks cleaning procedure
Aluminium-containing sludge；
Step 2, will be levigate in step one after aluminum mud with pure water clean after, be placed in concentration be 0.1mol/L dilute sulfur
Soak 1.5h in acid, then filtered and the filtering residue after filtering is added to activation 1h in activator, carried out again afterwards
Filter simultaneously the filtering residue after filtering is placed in Muffle furnace, is incubated 0.5h, the aluminum after being activated is dirty under conditions of temperature is 550 DEG C
Mud；The volume of described dilute sulfuric acid is 3 times of aluminum sludge volume, and the volume of described activator is 5 times of aluminum sludge volume, described work
The polyaluminium aluminum water solution that agent is 5% for mass percent concentration；
Step 3, by step 2 activate after aluminum mud be added in the water body containing fluorion, stirring 10min after quiet
Put 100min, then filtered, collect filtrate, obtain the water body of Natural zeolite；The addition of described aluminum mud be containing
The 0.25% of the Water quality of fluorion.
After testing, through the content of fluoride ion in the present embodiment before processing water body be 2.50mg/L, through the present embodiment process after
Fluorion in water body is down to 0.34mg/L, and the clearance of fluorion is up to 86.4%.It can thus be appreciated that the present embodiment goes using work
Aluminum mud after change removes Natural zeolite as adsorbent, and removal efficiency is high, and removal effect is good.
Embodiment 3
The method that the present embodiment removes fluorine ions in water body comprises the following steps：
Step one, by after aluminum sludge air drying levigate to granularity be 5mm；Described aluminum mud produces for waterworks cleaning procedure
Aluminium-containing sludge；
Step 2, will be levigate in step one after aluminum mud with pure water clean after, be placed in concentration be 0.3mol/L dilute sulfur
Soak 1h in acid, then filtered and the filtering residue after filtering is added to activation 1h in activator, filtered again afterwards
And the filtering residue after filtering is placed in Muffle furnace, it is incubated 0.5h under conditions of temperature is 550 DEG C, the aluminum after being activated is dirty
Mud；The volume of described dilute sulfuric acid is 5 times of aluminum sludge volume, and the volume of described activator is 3 times of aluminum sludge volume, described work
The polyaluminium aluminum water solution that agent is 15% for mass percent concentration；
Step 3, by step 2 activate after aluminum mud be added in the water body containing fluorion, stirring 20min after quiet
Put 50min, then filtered, collect filtrate, obtain the water body of Natural zeolite；The addition of described aluminum mud is containing fluorine
The 0.21% of the Water quality of ion.
After testing, through the content of fluoride ion in the present embodiment before processing water body be 2.50mg/L, through the present embodiment process after
Fluorion in water body is down to 0.41mg/L, and the clearance of fluorion is up to 83.6%.It can thus be appreciated that the present embodiment goes using work
Aluminum mud after change removes Natural zeolite as adsorbent, and removal efficiency is high, and removal effect is good.
Embodiment 4
The method that the present embodiment removes fluorine ions in water body comprises the following steps：
Step one, by after aluminum sludge air drying levigate to granularity be 1mm；Described aluminum mud produces for waterworks cleaning procedure
Aluminium-containing sludge；
Step 2, will be levigate in step one after aluminum mud with pure water clean after, be placed in concentration be 0.1mol/L dilute sulfur
Soak 1.5h in acid, then filtered and the filtering residue after filtering is added to activation 3h in activator, carried out again afterwards
Filter simultaneously the filtering residue after filtering is placed in Muffle furnace, is incubated 1h, the aluminum after being activated is dirty under conditions of temperature is 500 DEG C
Mud；The volume of described dilute sulfuric acid is 10 times of aluminum sludge volume, and the volume of described activator is 5 times of aluminum sludge volume, described
The aluminum sulfate aqueous solution that activator is 5% for mass percent concentration；
Step 3, by step 2 activate after aluminum mud be added in the water body containing fluorion, stirring 10min after quiet
Put 100min, then filtered, collect filtrate, obtain the water body of Natural zeolite；The addition of described aluminum mud be containing
The 0.08% of the Water quality of fluorion.
After testing, through the content of fluoride ion in the present embodiment before processing water body be 2.50mg/L, through the present embodiment process after
Fluorion in water body is down to 0.47mg/L, and the clearance of fluorion is up to 81.2%.It can thus be appreciated that the present embodiment goes using work
Aluminum mud after change removes Natural zeolite as adsorbent, and removal efficiency is high, and removal effect is good.
Embodiment 5
The method that the present embodiment removes fluorine ions in water body comprises the following steps：
Step one, by after aluminum sludge air drying levigate to granularity be 1mm；Described aluminum mud produces for waterworks cleaning procedure
Aluminium-containing sludge；
Step 2, will be levigate in step one after aluminum mud with pure water clean after, be placed in concentration be 0.1mol/L dilute sulfur
Soak 2h in acid, then filtered and the filtering residue after filtering is added to activation 1h in activator, filtered again afterwards
And the filtering residue after filtering is placed in Muffle furnace, it is incubated 0.5h under conditions of temperature is 500 DEG C, the aluminum after being activated is dirty
Mud；The volume of described dilute sulfuric acid is 3 times of aluminum sludge volume, and the volume of described activator is 3 times of aluminum sludge volume, described work
The aluminum chloride aqueous solution that agent is 5% for mass percent concentration；
Step 3, by step 2 activate after aluminum mud be added in the water body containing fluorion, stirring 10min after quiet
Put 50min, then filtered, collect filtrate, obtain the water body of Natural zeolite；The addition of described aluminum mud is containing fluorine
The 0.08% of the Water quality of ion.
Content of fluoride ion in water body after processing through the present embodiment is down to 0.50mg/L by 2.50mg/L, and clearance is up to
80%.It can thus be appreciated that the aluminum mud after the present embodiment goes using activation removes Natural zeolite as adsorbent, removal efficiency is high, removes
Effect is good.
Additionally, inventor has also done lot of experiments to each parameter value for the impact of the content of fluoride ion in water body, examination
Test and the results are shown in Table 1.
The each parameter value of table 1 is for the impact of the content of fluoride ion in water body
As shown in Table 1, the treatment effeciency of the present invention is apparently higher than the treatment effeciency of traditional method, and aluminum mud is activated
Treatment effeciency afterwards is apparently higher than the treatment effeciency not carrying out activation processing.But when the quality of aluminum mud is the water containing fluorion
The weight/mass percentage composition of 0.21%, the PAC aqueous solution of weight is 15%, and sulfuric acid concentration is 0.15mol/L, and aluminum mud particle diameter is
During 2mm, fluoride ion removing rate highest, reach 93.6%.
The above, be only presently preferred embodiments of the present invention, not the present invention imposed any restrictions.Every according to invention skill
Any simple modification, change and equivalence changes that art is substantially made to above example, all still fall within technical solution of the present invention
Protection domain in.
Claims (5)
1. a kind of method removing fluorine ions in water body is it is characterised in that the method comprises the following steps：
Step one, by after aluminum sludge air drying levigate to granularity be 1mm～5mm；Described aluminum mud is waterworks purified water operation
The aluminium-containing sludge producing；
Step 2, will be levigate in step one after aluminum mud with pure water clean after, be placed in concentration be 0.1mol/L～0.3mol/L
Dilute sulfuric acid in soak 1h～2h, then filtered and the filtering residue after filtering be added in activator activation 1h～3h, it
Filtered again afterwards and the filtering residue after filtering is placed in Muffle furnace, be incubated under conditions of temperature is 500 DEG C～550 DEG C
0.5h～1h, the aluminum mud after being activated；The volume of described dilute sulfuric acid is 3 times～10 times of aluminum sludge volume, described activation
The volume of agent is 3 times～5 times of aluminum sludge volume, and described activator is polyaluminium aluminum water solution；
Step 3, by step 2 activate after aluminum mud be added in the water body containing fluorion, stir 10min～20min
Stand 50min～100min afterwards, then filtered and the filtrate after filtering is collected, obtain the water of Natural zeolite
Body；The addition of described aluminum mud is 0.08%～0.25% of the Water quality containing fluorion.
2. a kind of method removing fluorine ions in water body according to claim 1 is it is characterised in that after levigate in step one
Aluminum mud granularity be 2mm.
3. a kind of method removing fluorine ions in water body according to claim 1 is it is characterised in that gather described in step 2
The mass percent concentration closing aluminum chloride aqueous solution is 5%～15%.
4. a kind of method removing fluorine ions in water body according to claim 1 is it is characterised in that dilute described in step 2
The concentration of sulphuric acid is 0.15mol/L.
5. a kind of method removing fluorine ions in water body according to claim 1 is it is characterised in that aluminum described in step 3
The addition of mud is 0.21% of the Water quality containing fluorion.
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| CN108905989A (en) * | 2018-07-31 | 2018-11-30 | 长安大学 | A kind of preparation method and application of defluorination material |
| CN115193394A (en) * | 2022-07-15 | 2022-10-18 | 江苏大学 | Method for preparing defluorination separation column filler by using double-solid waste sludge |
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| NZ599127A (en) * | 2009-10-01 | 2014-03-28 | Ziltek Pty Ltd | Remediation composition comprising alum sludge |
| CN102557367B (en) * | 2012-02-02 | 2013-07-03 | 南京大学 | Method for recycling and safely disposing aluminum-salt containing coagulated sludge |
| CN103880203A (en) * | 2012-12-19 | 2014-06-25 | 江苏飞亚化学工业有限责任公司 | Fluorine-containing wastewater treating device |
| CN104512972B (en) * | 2013-09-27 | 2016-05-25 | 中国石油化工股份有限公司 | A kind of processing method of fluoride waste |
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Inventor after: Yang Shengke Inventor after: Yuan Xiaoyu Inventor after: Song Rong Inventor after: Wang Runze Inventor after: Wang Zongzhou Inventor after: Wang Tong Inventor after: Li Zhiliang Inventor after: Wang Yanni Inventor after: Liu Yongjia Inventor after: Xu Guodan Inventor after: Song Yanan Inventor after: Li Hengjun Inventor after: Fang Jie Inventor before: Yang Shengke Inventor before: Wang Tong Inventor before: Li Zhiliang Inventor before: Wang Yani Inventor before: Liu Yongjia |
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