CN1445173A - Method for removing fluoride in water - Google Patents
Method for removing fluoride in water Download PDFInfo
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- CN1445173A CN1445173A CN 02109303 CN02109303A CN1445173A CN 1445173 A CN1445173 A CN 1445173A CN 02109303 CN02109303 CN 02109303 CN 02109303 A CN02109303 A CN 02109303A CN 1445173 A CN1445173 A CN 1445173A
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- water
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- fluorochemical
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Sorption (AREA)
Abstract
A process for removing chloride from water includes such steps as proportionally adding inorganic aluminium salt flocculant, stirring for less than 1 min, proportionally adding high-molecular coagulant aids, stirring for less than 1 min, reaction for less than 10 min, settling for 25 min, filtering the supernatant, and adsorbing by activated carbon. Its advantages are high effect and low cost.
Description
(1) technical field
What the present invention relates to is a kind of method of water treatment.Particularly a kind of method that underground water, surface water are handled.
(2) background technology
At present tap water is handled, the method for removing fluorochemical wherein mainly contains: activated alumina absorption method and tertiary sodium phosphate filtration method, electroosmose process, active zeolite exchange process etc.Activated alumina absorption method and tertiary sodium phosphate filtration method, electroosmose process is applicable to the big-and-middle-sized waterworks of fluorine content greater than 3mg/L, and it is higher less than its investment of small-sized water treatment station and the running cost of 40T/h less than 3mg/L, water consumption to be used for fluorine content, complicated operation.The active zeolite exchange process only is suitable for home-use small-sized refining plant.
(3) summary of the invention
The object of the present invention is to provide a kind of medium and small water treatment plant that relatively is suitable for, the method for the fluorochemical in the removal water of the water quality that the processing fluorine content is lower.The object of the present invention is achieved like this: add the inorganic aluminate flocculation agent in the fluorinated water, its add-on is 50-70 a times of fluorine content, after mixing time is not more than 1 minute, add the polymer coagulant aids, add-on is 0.5mg/L, enter in the reactor after mixing time is not more than 1 minute and react, reaction times is not more than 10 minutes, the sedimentation that is not more than 25 minutes after the reaction is handled, clear water after the sedimentation is with being pumped into strainer, enter active carbon adsorber after the filtration, after charcoal absorption, make qualified water.The invention has the advantages that: fluorinated water is through adding inorganic aluminate flocculation agent, polymer coagulant aids, the water-borne glue body is lost activity and condense, mutually combine between the small precipitate particles that the cohesion back generates, generate suede grain (alumen ustum), the suede grain is the aggregate that loosens, it has very high adsorptive power, not only fluorochemical in the planar water and colloid solute such as fluorine and organism, and can will cause organic matter, turbidity, manganese, iron and the suspended substance removal of water colour.Filtering through filter and hold back not precipitation and proportion approaches the small suede body of water of a part, is the protector of active carbon adsorber.Gac has more intense adsorptive power to fluorochemical, adopts activated carbon treatment again after filtering, and promptly fluorine residual in the water can be removed, and has solved simple employing charcoal absorption fluorochemical again, need regenerate the uneconomic deficiency of long-time running continually.Method of the present invention has treatment effect preferably, and last water outlet can reach fluorochemical less than 0.5mg/L, and colourity is less than 15 degree, and turbidity is less than 3 degree.Can reach drinking water standard.Be particularly suitable for handling the middle-size and small-size water treatment station of the water yield, handle underground water or the surface water of fluorine content less than 3mg/L less than 40T/h.
(4) description of drawings
Accompanying drawing is a process flow sheet of the present invention.
(5) specific embodiments
For a more detailed description to the present invention for example below:
Fluorine content is introduced by pump less than underground water or the surface water of 3mg/L, from dosing tank, in water, suck the inorganic aluminate flocculation agent through ejector, the inorganic aluminate flocculation agent is a kind of in Tai-Ace S 150, polyaluminium sulfate, polymer aluminium silicate, the polymerize aluminum chloride, its add-on be fluorine content 50-70 doubly.After inorganic aluminate flocculation agent and water mixing time are not more than 1 minute, suck the polymer coagulant aids through ejector from dosing tank in water, the polymer coagulant aids is a kind of in activated silicic acid, the polyacrylamide, and add-on is 0.5mg/L.Enter after mixing time is not more than 1 minute and be carried out to the alum reaction in the folded plate type reactor, the reaction times is not more than 10 minutes.The sedimentation that is not more than 25 minutes after the reaction is handled.Clear water after the sedimentation is with being pumped into strainer, and strainer can be quartz sand filtration device, secondary filter, micro-strainer, honeycomb filter etc.Enter active carbon adsorber after the filtration, after charcoal absorption, make qualified water.
Claims (3)
1, a kind of method of removing the fluorochemical in the water, it is characterized in that: add the inorganic aluminate flocculation agent in the fluorinated water, its add-on is 50-70 a times of fluorine content, after mixing time is not more than 1 minute, add the polymer coagulant aids, add-on is 0.5mg/L, enter in the reactor after mixing time is not more than 1 minute and react, reaction times is not more than 10 minutes, the sedimentation that is not more than 25 minutes after the reaction is handled, clear water after the sedimentation enters active carbon adsorber with being pumped into strainer after the filtration, make qualified water after charcoal absorption.
2, the method for the fluorochemical in the removal water according to claim 1 is characterized in that: described inorganic aluminate flocculation agent is a kind of in Tai-Ace S 150, polyaluminium sulfate, polymer aluminium silicate, the polymerize aluminum chloride.
3, according to the method for the fluorochemical in claim 1, the 2 described removal water, it is characterized in that: described polymer coagulant aids is a kind of in activated silicic acid, the polyacrylamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109303 CN1445173A (en) | 2002-03-16 | 2002-03-16 | Method for removing fluoride in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109303 CN1445173A (en) | 2002-03-16 | 2002-03-16 | Method for removing fluoride in water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1445173A true CN1445173A (en) | 2003-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02109303 Pending CN1445173A (en) | 2002-03-16 | 2002-03-16 | Method for removing fluoride in water |
Country Status (1)
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| CN (1) | CN1445173A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292992C (en) * | 2003-11-06 | 2007-01-03 | 三洋电机株式会社 | Coagulant, coagulation treatment apparatus, coagulation treatment method, and coagulation treatment apparatus for fluid |
| CN1304301C (en) * | 2005-06-03 | 2007-03-14 | 天津大学 | Process for micro filtering combined fluorine removing by aluminate coagulating |
| CN102491555A (en) * | 2011-12-01 | 2012-06-13 | 核工业北京化工冶金研究院 | Method for removing fluorine in acid uranium process wastewater |
| CN103922793A (en) * | 2014-03-21 | 2014-07-16 | 苏州腾纳环保科技有限公司 | Fluorine-removal activated water filter material |
| CN106006896A (en) * | 2016-07-15 | 2016-10-12 | 朱晨迪 | Fluoric wastewater treatment material and treatment method thereof |
| CN106145289A (en) * | 2016-08-17 | 2016-11-23 | 聂麒曌 | A kind of novel composite flocculating agent to fluoride wastewater treatment and preparation method thereof |
| CN107879541A (en) * | 2017-11-25 | 2018-04-06 | 昆明有色冶金设计研究院股份公司 | A kind of method using the fluorine-containing early-stage rainwater of magnetic flocculation adsorption treatment |
-
2002
- 2002-03-16 CN CN 02109303 patent/CN1445173A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292992C (en) * | 2003-11-06 | 2007-01-03 | 三洋电机株式会社 | Coagulant, coagulation treatment apparatus, coagulation treatment method, and coagulation treatment apparatus for fluid |
| CN1304301C (en) * | 2005-06-03 | 2007-03-14 | 天津大学 | Process for micro filtering combined fluorine removing by aluminate coagulating |
| CN102491555A (en) * | 2011-12-01 | 2012-06-13 | 核工业北京化工冶金研究院 | Method for removing fluorine in acid uranium process wastewater |
| CN103922793A (en) * | 2014-03-21 | 2014-07-16 | 苏州腾纳环保科技有限公司 | Fluorine-removal activated water filter material |
| CN106006896A (en) * | 2016-07-15 | 2016-10-12 | 朱晨迪 | Fluoric wastewater treatment material and treatment method thereof |
| CN106145289A (en) * | 2016-08-17 | 2016-11-23 | 聂麒曌 | A kind of novel composite flocculating agent to fluoride wastewater treatment and preparation method thereof |
| CN107879541A (en) * | 2017-11-25 | 2018-04-06 | 昆明有色冶金设计研究院股份公司 | A kind of method using the fluorine-containing early-stage rainwater of magnetic flocculation adsorption treatment |
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