CN101560006A - Method for jointly treating high-fluorine sewage by utilizing waste slag - Google Patents
Method for jointly treating high-fluorine sewage by utilizing waste slag Download PDFInfo
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- CN101560006A CN101560006A CNA2008100495564A CN200810049556A CN101560006A CN 101560006 A CN101560006 A CN 101560006A CN A2008100495564 A CNA2008100495564 A CN A2008100495564A CN 200810049556 A CN200810049556 A CN 200810049556A CN 101560006 A CN101560006 A CN 101560006A
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Abstract
The invention provides a method for jointly treating high-fluorine sewage by utilizing waste slag, which comprises the following steps: (1) carbide slag, pulverized fuel ash and red mud are added into a treatment pond containing the high-fluorine sewage and sent into an overflow pond after being stirred and reacting for 10-20 minutes, and clear liquid in the overflow pond flows into a reaction pond; (2) the carbide slag is added into the reaction pond, and the pH is regulated to 9-10; after 10-20 minutes of reaction, a coagulating agent is added to the clear liquid, and the pH is regulated to 6-7.5; after 10-20 minutes of reaction, a coagulant aid is added to the clear liquid; and after 10-20 minutes of reaction, the clear liquid is filtered and drained. The method uses the industrial waste slag for treating the high-fluorine sewage so as to ensure that the fluorine content in the treated sewage conforms to an environmental protection standard specified by the nation, thus the pollution of the high-fluorine sewage to the environment is greatly reduced. Meanwhile, the harm of the industrial slag to the environment is also reduced, thus the method has higher economic benefit and social benefit.
Description
Technical field
The invention belongs to sewage disposal technology, relate to a kind of method of utilizing the waste residue jointly treating high-fluorine sewage.
Background technology
Fluorine is a kind of trace element, and the tap water fluorine content is useful at the water of 0.4～0.6mg/L to the mankind, but Long Drinks can bring disadvantageous effect with fluorine content to human body greater than the water of high fluorine content of 1.5mg/L, and serious meeting causes dental fluorosis and osteofluorosis; The discharging of high-concentration fluorine-contained trade effluent can cause big pollution to environment, and animal and plant are poisoned, and influences the production of animal husbandry, agricultural, more the healthy of the mankind is caused very big threat, so the processing of fluorine containing waste water is had very important significance.It is a lot of to handle the fluoride waste method at present both at home and abroad, mainly contain absorption method, electrocoagulation, reverse osmosis membrane, ion exchange method, chemical precipitation method and coagulant sedimentation etc., but the processing costs of these methods is all higher, and also higher to the requirement of operational condition.
In the production process of aluminum fluoride by dry process, adopt the reaction of sulfuric acid and fluorite to generate hydrogen fluoride gas, hydrogen fluoride gas reacts with exsiccant aluminium hydroxide after washing, generate aluminum fluoride, can produce the high sewage of fluorine content in process of production, for make the sewage of discharging meet national standard, just can discharge after needing earlier fluorine containing waste water to be handled.The method that adopts is a lime precipitation at present, but the cost height that this method is handled is unfavorable for Sustainable development.
Calcium carbide is mainly used to prepare polyvinyl chloride, polyethylene and acetylene, but can produce carbide slag simultaneously; Red mud is the waste residue that produces in aluminum oxide or the production of aluminum hydroxide process, flyash mainly is fuel-burning power plant that acts as a fuel with coal or the waste material that heat power plant was discharged, these industrial residues have only the waste residue about 20% to utilize again, mostly not by large-scale utilization, most of waste residue only passes through directly air storage after the simple process, but directly stacking not only takies a large amount of soils or arable land, also can cause serious environmental to pollute, the growth of harm animal and plant, even polluted source, how these industrial residues of reasonable use also become current challenge.
Summary of the invention
The purpose of this invention is to provide a kind ofly turn waste into wealth, cost is low and treatment effect the is good method of utilizing the waste residue jointly treating high-fluorine sewage.
For achieving the above object, the present invention is by the following technical solutions: the method for utilizing the waste residue jointly treating high-fluorine sewage, may further comprise the steps: (1) adds carbide slag, flyash and red mud in the treating pond that fills high-fluorine sewage, stirring reaction was sent in the run-off after 10～20 minutes, continue reaction 10～20 minutes in run-off, the clear liquid part overflow in the run-off enters in the reaction tank; (2) in reaction tank, add carbide slag, regulate PH=9～10, react after 10～20 minutes and in the clear liquid part, add coagulating agent, regulate PH=6～7.5, react after 10～20 minutes to clear liquid and add coagulant aids in partly, react 10～20 minutes after-filtration and discharge.
Described step (2) is: add carbide slag in reaction tank, regulate PH=9～10, react that the overflow of clear liquid part enters coagulation basin after 10～20 minutes; In coagulation basin, add coagulating agent, regulate PH=6～7.5, react after 10～20 minutes the overflow of clear liquid part and enter to help and coagulate the pond; Add coagulant aids to helping with fixed attention in the pond, react after-filtration discharging in 10～20 minutes.
Described coagulating agent can be in Tai-Ace S 150, alum, Aluminum chloride anhydrous, crystallization aluminum chloride, ferrous sulfate, iron trichloride, bodied ferric sulfate or the polyaluminium sulfate any one.
Described coagulating agent is a Tai-Ace S 150.
Described coagulant aids is any one in polyacrylamide, non-ionic polyacrylamide, cationic polyacrylamide or the anionic polyacrylamide.
Described coagulant aids is a polyacrylamide.
The weight ratio of described carbide slag, flyash and red mud and high-fluorine sewage is: 0.05～0.1: 0.05～0.1: 0.05～0.1: 1.
The weight ratio of described Tai-Ace S 150 and high-fluorine sewage is 0.07%～0.12%: 1.
The weight ratio of described polyacrylamide and high-fluorine sewage is 0.001%～0.003%: 1.
The present invention uses carbide slag, flyash and three kinds of industrial residues of red mud to handle high-fluorine sewage, contain the CaO about 60% in the carbide slag, flyash approximately contains the CaO about 22%, probably contains the CaO about 20% in the waste residue red mud that production aluminium hydroxide produces; CaO meets water and generates Ca (OH)
2, calcium ion and fluorion association reaction generate the Calcium Fluoride (Fluorspan) that is insoluble in water, reaction equation: Ca
2++ 2F
-=CaF
2↓; Utilization utilizes natural subsidence often can not remove fine particle suspended substance and colloid pollution thing in the high-fluorine sewage, can add aluminum sulfate coagulant for this reason and destroy its stable dispersion that in water, forms system, the coagulant aids polyacrylamide destroys stable dispersion system jointly, it is assembled be the flocs unit of settleability, utilize the gravitational settling method further to separate then, more thorough with pollutant removal; Use industrial residue, about 20 yuan per ton of carbide slag, about 260 yuan per ton of lime reduces processing cost greatly; The present invention uses industrial residue to handle high-fluorine sewage, make fluorine content in the sewage after the processing less than 10mg/L, the environmental protection standard that meets national regulation, reduced the pollution of high-fluorine sewage greatly, also reduced the harm of industrial residue simultaneously, and greatly reduced the cost of processing environment to environment, turn waste into wealth, realize the utilization again of resource, meet the strategy of sustainable development, have high economic benefit and social benefit.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1: the method for utilizing the waste residue jointly treating high-fluorine sewage as described in the present invention, may further comprise the steps: in filling the treating pond of high-fluorine sewage that the 1t fluorine content is 3000mg/L, add 50kg carbide slag, 50kg flyash and 50kg red mud, stirring reaction was sent in the run-off after 10 minutes, continue reaction 10 minutes in run-off, the clear liquid part overflow in the run-off enters in the reaction tank; (2) in reaction tank, add carbide slag, regulate PH=9, react that the overflow of clear liquid part enters coagulation basin after 10 minutes; (3) in coagulation basin, add 0.72kg Tai-Ace S 150, regulate PH=6, react after 10 minutes the overflow of clear liquid part and enter to help and coagulate the pond; (4) add the 0.01kg polyacrylamide to helping with fixed attention in the pond, react after-filtration discharging in 10 minutes.Fluorine content in the filtered sewage is 7.5mg/L after testing, and fluorine content is the sewage that produces during the high-fluorine sewage of 3000mg/L is produced from aluminum fluoride by dry process.
Embodiment 2: the method for utilizing the waste residue jointly treating high-fluorine sewage as described in the present invention, may further comprise the steps: in filling the treating pond of high-fluorine sewage that the 1t fluorine content is 5000mg/L, add 70kg carbide slag, 70kg flyash and 70kg red mud, stirring reaction was sent in the run-off after 15 minutes, continue reaction 15 minutes in run-off, the clear liquid part overflow in the run-off enters in the reaction tank; (2) in reaction tank, add carbide slag, regulate PH=9.5, react that the overflow of clear liquid part enters coagulation basin after 15 minutes; (3) in coagulation basin, add the 0.8kg Aluminum chloride anhydrous, regulate PH=7, react after 15 minutes the overflow of clear liquid part and enter to help and coagulate the pond; (4) add the 0.02kg cationic polyacrylamide to helping with fixed attention in the pond, react after-filtration discharging in 15 minutes.Fluorine content in the filtered sewage is 8mg/L after testing.
Embodiment 3: the method for utilizing the waste residue jointly treating high-fluorine sewage as described in the present invention, may further comprise the steps: in filling the treating pond of high-fluorine sewage that the 1t fluorine content is 8000mg/L, add 100kg carbide slag, 100kg flyash and 100kg red mud, stirring reaction was sent in the run-off after 20 minutes, continue reaction 20 minutes in run-off, the clear liquid part overflow in the run-off enters in the reaction tank; (2) in reaction tank, add carbide slag, regulate PH=10, react that the overflow of clear liquid part enters coagulation basin after 20 minutes; (3) in coagulation basin, add the 1.2kg polyaluminium sulfate, regulate PH=7.5, react after 20 minutes the overflow of clear liquid part and enter to help and coagulate the pond; (4) add the 0.03kg anionic polyacrylamide to helping with fixed attention in the pond, react after-filtration discharging in 20 minutes.Fluorine content in the filtered sewage is 8.5mg/L after testing.
Claims (9)
1, utilizes the method for waste residue jointly treating high-fluorine sewage, it is characterized in that: may further comprise the steps: (1) adds carbide slag, flyash and red mud in the treating pond that fills high-fluorine sewage, stirring reaction was sent in the run-off after 10～20 minutes, continue reaction 10～20 minutes in run-off, the clear liquid part overflow in the run-off enters in the reaction tank; (2) in reaction tank, add carbide slag, regulate PH=9～10, react after 10～20 minutes and in the clear liquid part, add coagulating agent, regulate PH=6～7.5, react after 10～20 minutes to clear liquid and add coagulant aids in partly, react 10～20 minutes after-filtration and discharge.
2, the method for utilizing the waste residue jointly treating high-fluorine sewage according to claim 1 is characterized in that: described step (2) is: add carbide slag in reaction tank, regulate PH=9～10, react that the overflow of clear liquid part enters coagulation basin after 10～20 minutes; In coagulation basin, add coagulating agent, regulate PH=6～7.5, react after 10～20 minutes the overflow of clear liquid part and enter to help and coagulate the pond; Add coagulant aids to helping with fixed attention in the pond, react after-filtration discharging in 10～20 minutes.
3, the method for utilizing the waste residue jointly treating high-fluorine sewage according to claim 1 and 2 is characterized in that: described coagulating agent can be in Tai-Ace S 150, alum, Aluminum chloride anhydrous, crystallization aluminum chloride, ferrous sulfate, iron trichloride, bodied ferric sulfate or the polyaluminium sulfate any one.
4, the method for utilizing the waste residue jointly treating high-fluorine sewage according to claim 3 is characterized in that: described coagulating agent is a Tai-Ace S 150.
5, according to claim 1,2,3 each described methods of utilizing the waste residue jointly treating high-fluorine sewage, it is characterized in that: described coagulant aids is any one in polyacrylamide, non-ionic polyacrylamide, cationic polyacrylamide or the anionic polyacrylamide.
6, the method for utilizing the waste residue jointly treating high-fluorine sewage according to claim 5 is characterized in that: described coagulant aids is a polyacrylamide.
7, according to claim 4 or the 6 described methods of utilizing the waste residue jointly treating high-fluorine sewage, it is characterized in that: the weight ratio of described carbide slag, flyash and red mud and high-fluorine sewage is: 0.05～0.1: 0.05～0.1: 0.05～0.1: 1.
8, according to claim 4 or the 6 described methods of utilizing the waste residue jointly treating high-fluorine sewage, it is characterized in that: the weight ratio of described Tai-Ace S 150 and high-fluorine sewage is 0.07%～0.12%: 1.
9, according to claim 4 or the 6 described methods of utilizing the waste residue jointly treating high-fluorine sewage, it is characterized in that: the weight ratio of described polyacrylamide and high-fluorine sewage is 0.001%～0.003%: 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100495564A CN101560006B (en) | 2008-04-15 | 2008-04-15 | Method for jointly treating high-fluorine sewage by utilizing waste slag |
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| CN2008100495564A CN101560006B (en) | 2008-04-15 | 2008-04-15 | Method for jointly treating high-fluorine sewage by utilizing waste slag |
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| CN101560006A true CN101560006A (en) | 2009-10-21 |
| CN101560006B CN101560006B (en) | 2011-07-06 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103864245A (en) * | 2014-03-19 | 2014-06-18 | 陕西延长石油集团氟硅化工有限公司 | Technology for treating inorganic fluorine-organic fluorine industrial waste water |
| CN105036406A (en) * | 2015-07-02 | 2015-11-11 | 江西铜业股份有限公司 | Novel wastewater fluorine-removing technology |
| CN106745416A (en) * | 2016-11-30 | 2017-05-31 | 昆明理工大学 | The application of arsenic and fluorine and its application process in a kind of high-temperature fusion copper ashes treatment waste acid |
| CN109019986A (en) * | 2018-09-18 | 2018-12-18 | 青岛新美地能源科技有限公司 | A method of removing Natural zeolite |
| CN109078962A (en) * | 2018-08-30 | 2018-12-25 | 西北矿冶研究院 | Combined treatment method of arsenic-containing acidic wastewater, red mud and carbide slag |
| CN109502826A (en) * | 2018-12-27 | 2019-03-22 | 佛山柯维光电股份有限公司 | A kind of processing method of fluoride waste |
| CN114644414A (en) * | 2022-03-23 | 2022-06-21 | 山东兖矿国际焦化有限公司 | First-stage defluorination agent regulation and control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1025954C (en) * | 1991-01-12 | 1994-09-21 | 太原工业大学 | Treating process for water containing fluorine |
| CN1724405A (en) * | 2005-06-28 | 2006-01-25 | 贵州宏福实业开发有限总公司 | Process for treating and controlling acid waste water containing fluorine |
| CN1962475A (en) * | 2006-12-05 | 2007-05-16 | 谢发达 | Method and device for treating fluorine-containing waste water using limestone |
-
2008
- 2008-04-15 CN CN2008100495564A patent/CN101560006B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103864245A (en) * | 2014-03-19 | 2014-06-18 | 陕西延长石油集团氟硅化工有限公司 | Technology for treating inorganic fluorine-organic fluorine industrial waste water |
| CN103864245B (en) * | 2014-03-19 | 2015-06-24 | 陕西延长石油集团氟硅化工有限公司 | Technology for treating inorganic fluorine-organic fluorine industrial waste water |
| CN105036406A (en) * | 2015-07-02 | 2015-11-11 | 江西铜业股份有限公司 | Novel wastewater fluorine-removing technology |
| CN106745416A (en) * | 2016-11-30 | 2017-05-31 | 昆明理工大学 | The application of arsenic and fluorine and its application process in a kind of high-temperature fusion copper ashes treatment waste acid |
| CN106745416B (en) * | 2016-11-30 | 2020-09-25 | 昆明理工大学 | Application of arsenic and fluorine in high-temperature molten copper slag treatment of contaminated acid and application method thereof |
| CN109078962A (en) * | 2018-08-30 | 2018-12-25 | 西北矿冶研究院 | Combined treatment method of arsenic-containing acidic wastewater, red mud and carbide slag |
| CN109078962B (en) * | 2018-08-30 | 2021-06-18 | 西北矿冶研究院 | Combined treatment method of arsenic-containing acidic wastewater, red mud and carbide slag |
| CN109019986A (en) * | 2018-09-18 | 2018-12-18 | 青岛新美地能源科技有限公司 | A method of removing Natural zeolite |
| CN109019986B (en) * | 2018-09-18 | 2022-01-18 | 青岛新美地能源科技有限公司 | Method for removing fluorine ions |
| CN109502826A (en) * | 2018-12-27 | 2019-03-22 | 佛山柯维光电股份有限公司 | A kind of processing method of fluoride waste |
| CN114644414A (en) * | 2022-03-23 | 2022-06-21 | 山东兖矿国际焦化有限公司 | First-stage defluorination agent regulation and control method |
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