CN104973713A - Fluorine-containing sewage treatment method - Google Patents
Fluorine-containing sewage treatment method Download PDFInfo
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- CN104973713A CN104973713A CN201410569167.XA CN201410569167A CN104973713A CN 104973713 A CN104973713 A CN 104973713A CN 201410569167 A CN201410569167 A CN 201410569167A CN 104973713 A CN104973713 A CN 104973713A
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- sewage
- fluorine
- treatment method
- treatment process
- waste water
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- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a fluorine-containing sewage treatment method, wherein quick lime is employed for replacing a part of lime milk with addition of sulfuric acid and a flocculating agent to reduce the high-concentration fluorine-containing sewage, thereby effectively removing fluorine from the sewage. The treatment method is low in production cost and clear liquid in the treated sewage is reusable.
Description
Technical field
The present invention relates to a kind of fluorine containing waste water treatment process.
Background technology
Industrial, the normal fluorochemical containing high density in the sewage of the industry discharges such as fluorine-containing ore extraction, Metal smelting, aluminium processing, coke, glass, electronics, plating, chemical fertilizer, agricultural chemicals.For these fluorine containing waste waters, the most of manufacturer of current China there is no perfect treatment process, and in the sewage of institute partner, fluorine-containing index not yet reaches discharging standards, causes environmental pollution.
The treatment process of fluorine containing waste water has multiple, and domestic common method is roughly divided into two classes, i.e. the precipitator method and absorption method, and cold method, gac remove method for removing fluor etc., but seldom industrially apply so far in addition in addition, and mainly because cost is high, fluoride removing rate is low.
Summary of the invention
Object of the present invention provides a kind of fluorine containing waste water treatment process.
The technical solution used in the present invention is: a kind of fluorine containing waste water treatment process, it is characterized in that the method step is as follows:
(1), settlement of sewage is removed solid substance;
(2), by unslaked lime add in sewage, be neutralized to pH=12-13;
(3), by sulfuric acid add in sewage, regulate pH=9-8;
(4), polyacrylamide is added in sewage.
As a further improvement on the present invention, polyacrylamide makes sewage solid be separated as flocculation agent.
The invention has the beneficial effects as follows: with unslaked lime replace part milk of lime, add sulfuric acid, flocculation agent deviates from high-concentration fluorine-contained sewage, effectively can remove the fluorine in sewage, and production cost is low, in the sewage after process, clear liquid can utilize again.
Embodiment
Embodiment: a kind of fluorine containing waste water treatment process, is characterized in that the method step is as follows:
(1), settlement of sewage is removed solid substance;
(2), by unslaked lime add in sewage, be neutralized to pH=12-13;
(3), by sulfuric acid add in sewage, regulate pH=9-8;
(4), polyacrylamide is added in sewage.
In step 4, polyacrylamide makes sewage solid be separated as flocculation agent.
If pH value is lower in step 2, first can adds limestone powder neutralization, then add neutralization with lime.
Claims (2)
1. a fluorine containing waste water treatment process, is characterized in that the method step is as follows:
(1), settlement of sewage is removed solid substance;
(2), by unslaked lime add in sewage, be neutralized to pH=12-13;
(3), by sulfuric acid add in sewage, regulate pH=9-8;
(4), polyacrylamide is added in sewage.
2. fluorine containing waste water treatment process according to claim 1, is characterized in that in described step 4, polyacrylamide makes sewage solid be separated as flocculation agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569167.XA CN104973713A (en) | 2014-10-23 | 2014-10-23 | Fluorine-containing sewage treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569167.XA CN104973713A (en) | 2014-10-23 | 2014-10-23 | Fluorine-containing sewage treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104973713A true CN104973713A (en) | 2015-10-14 |
Family
ID=54270743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410569167.XA Pending CN104973713A (en) | 2014-10-23 | 2014-10-23 | Fluorine-containing sewage treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104973713A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004037729A1 (en) * | 2002-10-23 | 2004-05-06 | Halliburton Energy Services, Inc. | Methods for making water treatment compositions and compositions thereof |
| CN101538095A (en) * | 2009-04-28 | 2009-09-23 | 中矿威德能源科技（北京）有限公司 | Defluorination method of nano aluminium trichloride |
| CN102452738A (en) * | 2010-10-22 | 2012-05-16 | 深圳市拓日新能源科技股份有限公司 | Treatment method of fluorine-containing waste water of solar cell plant |
-
2014
- 2014-10-23 CN CN201410569167.XA patent/CN104973713A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004037729A1 (en) * | 2002-10-23 | 2004-05-06 | Halliburton Energy Services, Inc. | Methods for making water treatment compositions and compositions thereof |
| CN101538095A (en) * | 2009-04-28 | 2009-09-23 | 中矿威德能源科技（北京）有限公司 | Defluorination method of nano aluminium trichloride |
| CN102452738A (en) * | 2010-10-22 | 2012-05-16 | 深圳市拓日新能源科技股份有限公司 | Treatment method of fluorine-containing waste water of solar cell plant |
Non-Patent Citations (1)
| Title |
|---|
| 占其军: "高浓度含氟污水处理及利用", 《磷肥和复肥》 * |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151014 |
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| WD01 | Invention patent application deemed withdrawn after publication |