CN104973712A - Treatment method and treatment device of phosphogypsum waste water - Google Patents
Treatment method and treatment device of phosphogypsum waste water Download PDFInfo
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- CN104973712A CN104973712A CN201410569166.5A CN201410569166A CN104973712A CN 104973712 A CN104973712 A CN 104973712A CN 201410569166 A CN201410569166 A CN 201410569166A CN 104973712 A CN104973712 A CN 104973712A
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- waste water
- treatment
- phosphogypsum
- calcium phosphate
- calcium fluoride
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Abstract
The invention discloses a treatment method and a treatment device of phosphogypsum waste water, wherein the method includes: 1) adding lime milk to the waste water to remove fluorine, and separating the waste water into calcium fluoride and clear water; 2) dewatering the calcium fluoride to obtain waste solid residue; 3) generating calcium phosphate precipitate with the phosphorus in the clear water obtained through separation of the lime milk; and 4) feeding calcium phosphate to a reaction tank to produce phosphoric acid. The treatment method and the treatment device can increase the utilization rate of phosphorus resources, can reduce project investment and operation cost, and can increase reliability of project.
Description
Technical field
The present invention relates to a kind for the treatment of process and equipment of phosphogypsum waste water.
Background technology
Main phosphate fertilizer plant domestic is at present due to gypsum stack operation scheme, and general have gypsum stack Chi Shui that is phosphorous and fluorine in a large number to need to go process as sewage partially.The mode of sewage disposal carries out neutralization precipitation with unslaked lime, the waste residue that finally to obtain with calcium phosphate and Calcium Fluoride (Fluorspan) be main component.Be P to phosphoric acid plant scale
2o
5the phosphate fertilizer plant of 300kt/a, sewage load hourly is about 200t, the P in sewage
2o
5about 1%, calculate by the annual 7200h of operation, the loss of a year is very surprising, how to optimize the technique of sewage disposal, is fully utilized phosphor in sewage, be we must faced by key subjects.
Summary of the invention
The object of this invention is to provide a kind for the treatment of process and equipment of phosphogypsum waste water.
The technical solution used in the present invention is: a kind for the treatment of process of phosphogypsum waste water,
(1), in waste water, add milk of lime removal fluorine, sewage is separated into Calcium Fluoride (Fluorspan) and clear water;
(2), isolated Calcium Fluoride (Fluorspan) is become waste residue through processed;
(3), with the phosphorus in the isolated clear water of milk of lime, calcium phosphate precipitation is generated;
(4), calcium phosphate is delivered to reactive tank and produce phosphorus.
A treatment unit for phosphogypsum waste water, comprise the first order reaction groove of pipe connection successively, first grade subsides thickening pond, second order reaction groove and secondary sedimentation and thickening pond, described first grade subsides thickening pond bottom tube is connected with pressure filter.
The invention has the beneficial effects as follows: the present invention not only can improve the utilization ratio of phosphor resource, can also reduce project investment and running cost, improve the reliability of project.
Embodiment
A treatment process for phosphogypsum waste water, step is:
(1), in waste water, add milk of lime removal fluorine, sewage is separated into Calcium Fluoride (Fluorspan) and clear water;
(2), isolated Calcium Fluoride (Fluorspan) is become waste residue through processed;
(3), with the phosphorus in the isolated clear water of milk of lime, calcium phosphate precipitation is generated;
(4), calcium phosphate is delivered to reactive tank and produce phosphoric acid.
Think supporting setting with aforesaid method, comprise the first order reaction groove of pipe connection successively, first grade subsides thickening pond, second order reaction groove and secondary sedimentation and thickening pond, described first grade subsides thickening pond bottom tube is connected with pressure filter.
Claims (2)
1. a treatment process for phosphogypsum waste water, is characterized in that:
(1), in waste water, add milk of lime removal fluorine, sewage is separated into Calcium Fluoride (Fluorspan) and clear water;
(2), isolated Calcium Fluoride (Fluorspan) is become waste residue through processed;
(3), with the phosphorus in the isolated clear water of milk of lime, calcium phosphate precipitation is generated;
(4), calcium phosphate is delivered to reactive tank and produce phosphoric acid.
2. the treatment unit of the phosphogypsum waste water suitable with the treatment process of phosphogypsum waste water according to claim 1, it is characterized in that first order reaction groove that this device comprises pipe successively and connect, first grade subsides thickening pond, second order reaction groove and secondary sedimentation and thickening pond, described first grade subsides thickening pond bottom tube is connected with pressure filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569166.5A CN104973712A (en) | 2014-10-23 | 2014-10-23 | Treatment method and treatment device of phosphogypsum waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569166.5A CN104973712A (en) | 2014-10-23 | 2014-10-23 | Treatment method and treatment device of phosphogypsum waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104973712A true CN104973712A (en) | 2015-10-14 |
Family
ID=54270742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410569166.5A Pending CN104973712A (en) | 2014-10-23 | 2014-10-23 | Treatment method and treatment device of phosphogypsum waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104973712A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600992A (en) * | 2016-02-14 | 2016-05-25 | 瓮福（集团）有限责任公司 | Technology for preparing feed calcium from wastewater residues |
| CN106734064A (en) * | 2016-11-29 | 2017-05-31 | 贵阳开磷化肥有限公司 | The ardealite innocent processing unit and its method of a kind of phosphoric acid by wet process output |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2397444A1 (en) * | 2009-02-13 | 2011-12-21 | Kobelco Eco-solutions Co., Ltd. | Method for processing waste water containing fluorine and silicon, method for producing calcium fluoride, and facility for processing fluorine-containing waste water |
| CN202508944U (en) * | 2012-04-20 | 2012-10-31 | 瓮福（集团）有限责任公司 | Device for producing phosphoric acid by recycling phosphorus in phosphorus-containing waste water |
| CN102947229A (en) * | 2010-05-18 | 2013-02-27 | 奥斯特拉营养康复技术有限公司 | Treatment of phosphate-containing wastewater |
-
2014
- 2014-10-23 CN CN201410569166.5A patent/CN104973712A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2397444A1 (en) * | 2009-02-13 | 2011-12-21 | Kobelco Eco-solutions Co., Ltd. | Method for processing waste water containing fluorine and silicon, method for producing calcium fluoride, and facility for processing fluorine-containing waste water |
| CN102947229A (en) * | 2010-05-18 | 2013-02-27 | 奥斯特拉营养康复技术有限公司 | Treatment of phosphate-containing wastewater |
| CN202508944U (en) * | 2012-04-20 | 2012-10-31 | 瓮福（集团）有限责任公司 | Device for producing phosphoric acid by recycling phosphorus in phosphorus-containing waste water |
Non-Patent Citations (1)
| Title |
|---|
| 邵志国等: "含氟含磷废水处理工艺的设计与运行", 《工业水处理》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600992A (en) * | 2016-02-14 | 2016-05-25 | 瓮福（集团）有限责任公司 | Technology for preparing feed calcium from wastewater residues |
| CN106734064A (en) * | 2016-11-29 | 2017-05-31 | 贵阳开磷化肥有限公司 | The ardealite innocent processing unit and its method of a kind of phosphoric acid by wet process output |
| CN106734064B (en) * | 2016-11-29 | 2023-08-04 | 贵阳开磷化肥有限公司 | Phosphogypsum harmless treatment device and phosphogypsum harmless treatment method for wet-process phosphoric acid output |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151014 |