CN101289260A - System and method for treating fluorine-containing acid wastewater after graphite purification - Google Patents
System and method for treating fluorine-containing acid wastewater after graphite purification Download PDFInfo
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- CN101289260A CN101289260A CNA2008100499495A CN200810049949A CN101289260A CN 101289260 A CN101289260 A CN 101289260A CN A2008100499495 A CNA2008100499495 A CN A2008100499495A CN 200810049949 A CN200810049949 A CN 200810049949A CN 101289260 A CN101289260 A CN 101289260A
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- waste water
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Abstract
The invention relates to a treatment system for fluorine-contained acid waste water after the purification of graphite and a method thereof. The treatment system comprises a three-level reaction pool or retort and purification settlement pools with at least one level; a chemical storage container is suspended in the reaction pool of each level, the bottom of the pool is provided with a settled residue chamber and the purification settlement pool of each level is provided with a high pressure sprinkling device. The waste water treatment method includes that waste water first enters a first reaction pool into which calcium compound is added to precipitate F<-> and metal ions in the waste water; then the waste water enters a second reaction pool into which alkali solution and a flocculant are added to neutralize the waste water and precipitate the remained metal ions; and then the waste water enters a third reaction pool into which aluminum salt is added to neutralize the waste water to be neutral; then the waste water enters the purification settlement pool to precipitate and filter harmful suspended substances in the waste water. The treatment system and the treatment method of the invention have the advantages of low construction cost, operation cost and treatment cost, easy operation control and good waste water treatment effect and particularly are applicable to the small-sized and medium-sized enterprises participating in the market competition, etc.
Description
Technical field
The present invention relates to a kind of Sewage treatment systems and method, the Treatment of acidic fluoride-containing waste water system and method after a kind of specifically graphite is purified.
Technical background
In graphite purify to be produced, can produce a large amount of fluorine-containing acid waste waters, need handle it and could discharge traditional method employing Ca (OH) after up to standard
2, CaCL
2Post precipitation adds AL
2(SO4)
3The acidic fluoride-containing waste water that produces in the coagulating treatment graphite purification process, processing cost is higher, and the sludge quantity that produces is big, be not easy operation, therefore provide a kind of investment little, running cost is low, and is easy to operate, and it is particularly necessary that the Treatment of acidic fluoride-containing waste water system and method after the graphite that the medium-sized and small enterprises that are particularly suitable for participating in market competition adopt is purified just seems.
Summary of the invention
The deficiency that the objective of the invention is to solve the problems of the technologies described above provides a kind of investment little, and running cost is low, and is easy to operate, the Treatment of acidic fluoride-containing waste water system and method after the graphite that the medium-sized and small enterprises that are particularly suitable for participating in market competition adopt is purified.
The present invention is the deficiency that solves the problems of the technologies described above, the technical scheme that is adopted is: the Treatment of acidic fluoride-containing waste water system and method after a kind of graphite is purified, treatment system comprises the third order reaction pond and the purification settling tank of one-level at least, suspention has medicament reservoir in the reaction tank of each grade, be provided with precipitation residue chamber at the bottom of the pond, on the purification settling tank of each grade, be equipped with high-pressure sprayer.
The present invention, described reaction tank also can replace with retort.
The present invention, described purification settling tank is six grades of purification settling tanks, every grade of purification settling tank water port is provided with wire cloth, impurity suspended substance in the filtering water.
The present invention, described medicament reservoir can be storage bag, storage tank or other similar containers, is used to store the used chemicals of purifying liquid waste.
The present invention is provided with the water valve of adjustable opening between described third order reaction pond and the six grades of purification settling tanks.
The present invention, the flow process of treatment process is:
1, waste water enters first step reaction tank, adds calcium cpd CaO or Ca (OH)
2, CaO elder generation and water reaction generate Ca (OH)
2And the reaction of the dilute hydrochloric acid in the water generates CaCL
2Deng material and soluble in water, the F in the water
-, Ca
2+In conjunction with generating CaF
2Sedimentable matter, metal ion and Ca (OH) such as the iron in the water, lead, copper
2Reaction generates Fe (OH)
3, Pb (OH)
2, Cu (OH)
2Deng the precipitation residue chamber of throw out at the bottom of purification is precipitated to the pond.
2, waste water enters second stage reaction tank, adds alkali lye and flocculation agents such as NaOH or KOH, the neutralizing acid wastewater, and the complete remaining lead of unreacted, fluorine, copper etc. combine the generation throw out and are settled down to bottom, pond and water sepn in flocculation agent and the water with flocculation agent.
3, waste water enters third stage reaction tank, adds aluminium salt, makes OH unnecessary in the waste water
-Or H
+With AL
3+In conjunction with generating AL (OH)
3Or H
3ALO
3Throw out, through repeatedly being settled down to the bottom, pond, this moment, water was neutral
4, waste water enters the purification settling tank, the high-pressure sprayer ejection water column of pool side, graphite particle and other suspended substances on waste water surface are squeezed in the water, because of the proportion of graphite proportion greater than water, so after six grades of purification sedimentations, the graphite particle in the water all sedimentation is gone at the bottom of the pond, makes water finally reach so clear that you can see the bottom, other non-graphite particle suspended substance then removes by filter by the wire cloth (can reach 500 orders) that is provided with every grade of settling bowl water port, finally makes wastewater treatment to qualified discharge.
The present invention, described flocculation agent is one or both mixtures in polyacrylamide or the sodium polyacrylate.
The present invention, described aluminium salt is AL
2(SO
4)
3Or ALCL
3
The invention has the beneficial effects as follows:
1, construction cost is low, and working cost is low, and processing cost is low.
2, easy handling control, wastewater treatment speed is fast, and flow is big, good purification.
3, being particularly suitable for the medium-sized and small enterprises of participating in market competition adopts.
Description of drawings
Fig. 1 is a processing flow chart of the present invention.
Embodiment
Waste water is introduced into first step reaction tank, pool volume is 16.5 cubic metres, and suspention has a large amount of CaO in the pond, when treating that waste water face height reaches 1.3 meters (being that liquid level floods the suspension calcium oxide) in the pond, turn down outlet valve to 1/3 of original aperture, make the abundant and Ca (OH) of fluoride waste in the pond
2Contact reacts.Reaction times continues to open outlet valve fully after 30 minutes, makes a large amount of waste water after the reaction treatment enter second stage reaction tank.Close outlet valve and water intaking valve.Open NaOH liquid caustic soda jar, make the waste water neutralization reaction, detect the control pH value 11～13 with the PH meter, be sprayed into flocculation agent this moment, add-on is 2.5mg/L～20mg/L, and the complete remaining lead of unreacted, fluorine, copper etc. combine with flocculation agent and produce the precipitation residue chamber that throw out is settled down to the bottom, pond in flocculation agent and the water.Open outlet valve, make waste water enter third stage reaction tank, open the AL on the third stage reaction tank
2(SO
4)
3Medicine storing pot valve, limit are put the soup limit and are stirred, and hybrid reaction 30 minutes is adjusted to neutrality with the waste water pH value, are measured as 6～8, AL with the PH meter
2(SO
4)
3Add-on can be operated according to calculating add-on.Less than 10mg/L, the waste water that chemical index is qualified enters six grades and purifies settling bowls its fluorine content of waste water behind the process third-order reaction through chemical detection, and the SS suspended substance is removed in the water the most at last, and the COD of water and SS suspended substance all can reach emission standard after testing at last.
The present invention, reaction tank, purification settling bowl must be done inside lining anti-corrosive with resin or rubber plate and handle.
The present invention, flocculation agent is one or more mixtures in polyacrylamide or the sodium polyacrylate.
The treatment effect of several different flocculation agents is:
| Flocculation agent | Former water fluorine mg/l | Water outlet fluorine mg/l |
| Polyacrylamide | 144.98 | 8.72 |
| Polyacrylamide-8 | 144.98 | 9.44 |
| Sodium polyacrylate | 144.98 | 9.07 |
Claims (9)
1, the Treatment of acidic fluoride-containing waste water system after a kind of graphite is purified, it is characterized in that: treatment system comprises third order reaction pond or retort and the purification settling tank of one-level at least, suspention has medicament reservoir in the reaction tank of each grade, be provided with precipitation residue chamber at the bottom of the pond, on the purification settling tank of each grade, be equipped with high-pressure sprayer.
2, the Treatment of acidic fluoride-containing waste water system after a kind of graphite as claimed in claim 1 is purified, it is characterized in that: treatment system is made up of third order reaction pond or retort and six grades of purification settling tanks, suspention has medicament reservoir in the reaction tank of each grade, be provided with precipitation residue chamber at the bottom of the pond, on the purification settling tank of each grade, be equipped with high-pressure sprayer.
3, the Treatment of acidic fluoride-containing waste water system after a kind of graphite as claimed in claim 1 or 2 is purified, it is characterized in that: described purification settling tank is provided with wire cloth every grade of purification settling tank water port, impurity suspended substance in the filtering water.
4, the Treatment of acidic fluoride-containing waste water system after a kind of graphite as claimed in claim 1 or 2 is purified is characterized in that: the water valve that is provided with adjustable opening between described third order reaction pond and the set purification settling tank.
5, the Treatment of acidic fluoride-containing waste water method after a kind of graphite is purified, it is characterized in that: waste water enters first step reaction tank, and the adding calcium cpd is settled out F-and the metal ion in the waste water; Enter second stage reaction tank, add alkali lye and flocculation agent, in and waste water and be settled out residual metal ions; Enter third stage reaction tank, add aluminium salt and make waste water be neutralized into neutrality; Enter six grades of purification settling tanks, precipitate, filter out the harmful suspended substance in the waste water.
6, the Treatment of acidic fluoride-containing waste water method after a kind of graphite as claimed in claim 5 is purified, it is characterized in that: described calcium cpd is CaO or Ca (OH)
2
7, the Treatment of acidic fluoride-containing waste water method after a kind of graphite as claimed in claim 5 is purified, it is characterized in that: described alkali lye is NaOH or KOH.
8, the Treatment of acidic fluoride-containing waste water method after a kind of graphite as claimed in claim 5 is purified, it is characterized in that: described flocculation agent is one or both mixtures in polyacrylamide or the sodium polyacrylate.
9, the Treatment of acidic fluoride-containing waste water method after a kind of graphite as claimed in claim 5 is purified, it is characterized in that: described aluminium salt is AL
2(SO4)
3Or ALCL
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100499495A CN101289260B (en) | 2008-05-28 | 2008-05-28 | System and method for treating fluorine-containing acid wastewater after graphite purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100499495A CN101289260B (en) | 2008-05-28 | 2008-05-28 | System and method for treating fluorine-containing acid wastewater after graphite purification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101289260A true CN101289260A (en) | 2008-10-22 |
| CN101289260B CN101289260B (en) | 2010-09-29 |
Family
ID=40033741
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100499495A Expired - Fee Related CN101289260B (en) | 2008-05-28 | 2008-05-28 | System and method for treating fluorine-containing acid wastewater after graphite purification |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153219A (en) * | 2011-04-28 | 2011-08-17 | 洛阳市冠奇工贸有限责任公司 | Treatment method for waste water after purification of graphite |
| CN101823799B (en) * | 2009-03-06 | 2012-08-15 | 昆山工研院华科生物高分子材料研究所有限公司 | Method for treating acidic fluorine-containing waste water |
| CN102915783A (en) * | 2012-10-24 | 2013-02-06 | 上海核工程研究设计院 | Flocculation adsorption treatment method of waste liquid of nuclear power plant and flocculating agent |
| CN103172199A (en) * | 2013-03-21 | 2013-06-26 | 深圳市超纯环保科技有限公司 | Method for treating hydrofluoric acid wastewater |
| 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 |
| CN104085973A (en) * | 2014-07-10 | 2014-10-08 | 秦皇岛首秦金属材料有限公司 | Preparation method of industrial water fluorine removal agent |
| CN105347574A (en) * | 2015-12-10 | 2016-02-24 | 浙江奇彩环境科技有限公司 | Fluoride removal method of graphite purification waste water and processing system |
| CN106976943A (en) * | 2017-04-28 | 2017-07-25 | 福建凯昱微晶石墨有限公司 | The processing system and its application method of a kind of acidic fluoride-containing waste water after graphite purification |
| CN109851102A (en) * | 2019-04-17 | 2019-06-07 | 中和环境工程有限公司 | A kind of processing method of graphite acid waste water Fractional Collections and segmentation neutralization |
-
2008
- 2008-05-28 CN CN2008100499495A patent/CN101289260B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823799B (en) * | 2009-03-06 | 2012-08-15 | 昆山工研院华科生物高分子材料研究所有限公司 | Method for treating acidic fluorine-containing waste water |
| CN102153219A (en) * | 2011-04-28 | 2011-08-17 | 洛阳市冠奇工贸有限责任公司 | Treatment method for waste water after purification of graphite |
| CN102915783A (en) * | 2012-10-24 | 2013-02-06 | 上海核工程研究设计院 | Flocculation adsorption treatment method of waste liquid of nuclear power plant and flocculating agent |
| CN102915783B (en) * | 2012-10-24 | 2015-06-03 | 上海核工程研究设计院 | Flocculation adsorption treatment method of waste liquid of nuclear power plant and flocculating agent |
| 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 |
| CN103172199A (en) * | 2013-03-21 | 2013-06-26 | 深圳市超纯环保科技有限公司 | Method for treating hydrofluoric acid wastewater |
| CN103172199B (en) * | 2013-03-21 | 2015-03-25 | 深圳市超纯环保股份有限公司 | Method for treating hydrofluoric acid wastewater |
| CN104085973A (en) * | 2014-07-10 | 2014-10-08 | 秦皇岛首秦金属材料有限公司 | Preparation method of industrial water fluorine removal agent |
| CN105347574A (en) * | 2015-12-10 | 2016-02-24 | 浙江奇彩环境科技有限公司 | Fluoride removal method of graphite purification waste water and processing system |
| CN106976943A (en) * | 2017-04-28 | 2017-07-25 | 福建凯昱微晶石墨有限公司 | The processing system and its application method of a kind of acidic fluoride-containing waste water after graphite purification |
| CN109851102A (en) * | 2019-04-17 | 2019-06-07 | 中和环境工程有限公司 | A kind of processing method of graphite acid waste water Fractional Collections and segmentation neutralization |
| CN109851102B (en) * | 2019-04-17 | 2021-11-23 | 中和环境工程有限公司 | Treatment method for sectional collection and sectional neutralization of graphite acid wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101289260B (en) | 2010-09-29 |
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Granted publication date: 20100929 |