CN202508944U - Device for producing phosphoric acid by recycling phosphorus in phosphorus-containing waste water - Google Patents
Device for producing phosphoric acid by recycling phosphorus in phosphorus-containing waste water Download PDFInfo
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- CN202508944U CN202508944U CN2012201687243U CN201220168724U CN202508944U CN 202508944 U CN202508944 U CN 202508944U CN 2012201687243 U CN2012201687243 U CN 2012201687243U CN 201220168724 U CN201220168724 U CN 201220168724U CN 202508944 U CN202508944 U CN 202508944U
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Abstract
The utility model discloses a device for producing phosphoric acid by recycling phosphorus in phosphorus-containing waste water. The device consists of a waste water storage tank, a waste water pump, a lime milk preparation tank, a lime milk pump, a first-stage reactor, a first-stage slurry pump, a first-stage sedimentation tank, a second-stage reactor, a second-stage slurry pump, a second-stage sedimentation tank, a third-stage reactor, a third-stage slurry pump, a filter, a water collection tank, a water collection pump and pipelines, wherein the waste water storage tank, the waste water pump, the first-stage reactor, the first-stage slurry pump, the first-stage sedimentation tank, the second-stage reactor, the second-stage slurry pump, the second-stage sedimentation tank, the third-stage reactor, the third-stage slurry pump and the filter are connected sequentially through the pipelines; the lime milk preparation tank and the lime milk pump are respectively connected with the first-stage reactor and the second-stage reactor through the pipelines; and the water collection tank is connected with the second-stage sedimentation tank and the water collection pump respectively through the pipelines. The device can be used for preparing dilute phosphoric acid by fully recycling phosphorus resources in the phosphorus-containing waste water, so that the phosphorus resources can be recycled, and the waste water can be reused; the equipment is simple, the treatment effect is good, and the stability is high; the cost is low; and the device is suitable for phosphorus chemical industry enterprises.
Description
[technical field]
The utility model is relevant with water reuse, and is specifically, relevant with the use device that produces waste water in the phosphorous chemical industry production process.
[background technology]
Phosphorous, the fluoric acid wastewater difficult treatment that produce during phosphorous chemical industry is produced.In the treating processes of high-density phosphorus, fluoric acid wastewater, adopt secondary lime acid-base neutralisation method at present more.And a large amount of sewage slag that will produce after the processing waste water, and the part addition material as phosphate fertilizer used after sewage slag can only adopt the slag dam heap to fill out or dry at present.The ZL200410009462.6 of Tsing-Hua University number " application of a kind of phosphorus-contained wastewater treating method and recovery phosphorus product thereof " is exactly to be flocculation agent with the molysite, and the quaternary ammonium salt Weibull is that coagulant aids is handled waste water, and the phosphorous throw out that obtains is as slow-release phosphate fertilizer.The applicant also once applied for " method of comprehensive utilization of wastewater of ammonium phosphate production " No. 201010267565.8; Disclose and passed through effluent segregation; Waste water according to the difference of ammonia-nitrogen content wherein, is mixed recycle in other production link respectively, realize the method for zero release; Also applied for No. 201110319541.7 " a kind of phosphorus-containing wastewater reclaim method ", effectively removed in the waste water in the phosphorus recovery of implementation part phosphorus.But aforesaid method is all failed a sewage slag and is thoroughly used, and the phosphor resource that is particularly contained in the slag fails thoroughly to reclaim, and still possibly cause the pollution of environment.Along with the raising of China to environmental protection requirement, in line with the principle that the filter resource is recycled as far as possible, for turning waste into wealth, the technician is still in the new processing scheme of exploitation simultaneously.
[summary of the invention]
The purpose of the utility model is to provide a kind of phosphorus-containing wastewater to reclaim the device of phosphorus system phosphoric acid, to increase the equipment that utilizes that produces waste water in the phosphorous chemical industry production process.
The designer is through investigation and analysis, and the main composition of having grasped phosphorus-containing wastewater is following:
| Numbering | P 2O 5(％) | F(％) | As(％) | Pb(％) | Hg(％) | PH | Remarks |
| 1 | 3.58 | 0.72 | 0.0001 | 0.0002 | ﹤0.0001 | 1.29 | ? |
| 2 | 3.67 | 0.81 | 0.0001 | 0.0003 | ﹤0.0001 | 1.26 | ? |
| 3 | 3.37 | 1.29 | 0.0001 | 0.0004 | ﹤0.0001 | 1.18 | ? |
| 4 | 3.44 | 1.21 | 0.0001 | 0.0004 | ﹤0.0001 | 1.16 | ? |
| On average | 3.51 | 1.0075 | 0.0001 | 0.0003 | ﹤0.0001 | 1.22 | ? |
The designer recognizes, fully reclaim the phosphorus in the waste water, needs to adopt it is carried out multiple-stage treatment.Therefore; The device that provides is made up of waste water storage tank, waste water pump, milk of lime Preparation tank, milk of lime pump, A reactor, one-level shurry pump, first grade subsides groove, second reactor, secondary shurry pump, secondary subsider, three reactor, three grades of shurry pumps, filter, water leg, water collecting pump and interconnective pipelines, and waste water storage tank, waste water pump, A reactor, one-level shurry pump, first grade subsides groove, second reactor, secondary shurry pump, secondary subsider, three reactor, three grades of shurry pumps, filters pass through pipe connection successively in the above equipment; The milk of lime Preparation tank is connected A reactor and second reactor with milk of lime pump respectively through pipeline; Water leg is respectively through pipe connection secondary subsider and water collecting pump.
Above-mentioned waste water storage tank is two to be had the mutual UNICOM of pipeline, and pipeline UNICOM waste water pump is arranged side by side, and the import and export of waste water pump all have by-pass valve control.
Above-mentioned milk of lime Preparation tank is two has pipeline UNICOM milk of lime pump side by side, and the import and export of milk of lime pump all have by-pass valve control.
Above-mentioned milk of lime Preparation tank, A reactor, second reactor and secondary subsider all are equipped with whisking appliance; Steam heating coil also is housed in the A reactor.
Above-mentioned filter is conventional vacuum filter.
The import and export of above-mentioned one-level shurry pump, secondary shurry pump and three grades of shurry pumps all have by-pass valve control.
The method of use of the utility model is:
(1) inwardly add waste water, add the milk of lime for preparing simultaneously, the pH value of liquid phase mixture is controlled at 2～3, and temperature is controlled at 30 ℃～50 ℃, and the reaction times is 40～60 minutes; The yield of reaction back phosphorus is about 80%; Reaction end back is squeezed into pump and is carried out sedimentation, and upper clear supernate gets into next stage and handles, and underflow goes filtering system;
(2) upper clear supernate after the sedimentation gets into, and in the second order reaction groove, adds milk of lime simultaneously, and the pH value control of liquid phase mixture is in system 5～7, and temperature is controlled at 40 ℃～50 ℃, and the reaction times is about 30 minutes; The phosphorus yield of second order reaction is about 70%; Squeeze into subsider with pump after reaction finishes and carry out sedimentation, upper clear supernate is recycled; Solid after the sedimentation mainly is calcium phosphate salt, gets into next stage and handles;
(3) the phosphoric acid salt solid-phase material that gets into adds sulfuric acid and carries out acidification, and temperature of reaction is controlled at
75 ℃～85 ℃, the reaction times is 3～4 hours; Obtain containing the phosphoric acid material pulp of calcium sulfate;
(4) reaction back slip is through filtering, and filter residue washs with clear water, and the phosphogypsum after the washing is sent to and stored up, and wash water is recovered into water leg, pumps to be used for preparing lime milk; Filtered liq is dilute phosphoric acid.
Use this device can fully reclaim the phosphor resource in the phosphorus-containing wastewater, make massfraction and be 25% dilute phosphoric acid.Realize the recovery and the cycling utilization of wastewater of phosphor resource, it is simple to have equipment, and treatment effect is good, good stability, and the advantage that cost is low is applicable to phosphorous chemical industry enterprise.
[description of drawings]
Fig. 1 is the structure drawing of device of the utility model.Among the figure, 1 is the waste water storage tank, and 2 is waste water pump, and 3 is A reactor; 4 is the one-level shurry pump, and 5 is the first grade subsides groove, and 6 is the milk of lime Preparation tank, and 7 is milk of lime pump; 8 is second reactor, and 9 is the secondary shurry pump, and 10 is the secondary subsider, and 11 is three reactor; 12 is three grades of shurry pumps, and 13 is filter, and 14 is water leg, and 15 is water collecting pump.
[embodiment]
Certain phosphate fertilizer plant of company uses the device of the utility model, and this device is made up of waste water storage tank 1, waste water pump 2, milk of lime Preparation tank 6, milk of lime pump 7, A reactor 3, one-level shurry pump 4, first grade subsides groove 5, second reactor 8, secondary shurry pump 9, secondary subsider 10, three reactor 11, three grades of shurry pumps 12, filter 13, water leg 14, water collecting pump 15 and interconnective pipelines; Waste water storage tank 1 in the above equipment, waste water pump 2, A reactor 3, one-level shurry pump 4, first grade subsides groove 5, second reactor 8, secondary shurry pump 9, secondary subsider 10, three reactor 11, three grades of shurry pumps 12, filters 13 pass through pipe connection successively; Milk of lime Preparation tank 6 is connected A reactor 3 and second reactor 8 with milk of lime pump 7 respectively through pipeline; Water leg 14 is respectively through pipe connection secondary subsider 10 and water collecting pump 15.
Waste water storage tank 1 is 1
#With 2
#Two have the mutual UNICOM of pipeline, and pipeline UNICOM waste water pump 2 are arranged side by side, and the import and export of waste water pump 2 all have by-pass valve control; Milk of lime Preparation tank 6 is two has pipeline UNICOM milk of lime pump 7 side by side, and the import and export of milk of lime pump 7 all have by-pass valve control.
Milk of lime Preparation tank 6, A reactor 3, second reactor 8 and secondary subsider 10 all are equipped with whisking appliance; Steam heating coil also is housed in the A reactor 3.
The filter 13 that uses is conventional vacuum filter.
The import and export of shurry pumps at different levels all have by-pass valve control.
Claims (6)
1. a phosphorus-containing wastewater reclaims the device of phosphorus system phosphoric acid, it is characterized in that this device is made up of waste water storage tank (1), waste water pump (2), milk of lime Preparation tank (6), milk of lime pump (7), A reactor (3), one-level shurry pump (4), first grade subsides groove (5), second reactor (8), secondary shurry pump (9), secondary subsider (10), three reactor (11), three grades of shurry pumps (12), filter (13), water leg (14), water collecting pump (15) and interconnective pipeline; Wherein waste water storage tank (1), waste water pump (2), A reactor (3), one-level shurry pump (4), first grade subsides groove (5), second reactor (8), secondary shurry pump (9), secondary subsider (10), three reactor (11), three grades of shurry pumps (12), filter (13) pass through pipe connection successively; Milk of lime Preparation tank (6) is connected A reactor (3) and second reactor (8) with milk of lime pump (7) respectively through pipeline; Water leg (14) is respectively through pipe connection secondary subsider (10) and water collecting pump (15).
2. device as claimed in claim 1 is characterized in that said waste water storage tank (1) is two and the mutual UNICOM of pipeline is arranged, and pipeline UNICOM waste water pump (2) is arranged side by side, and the import and export of waste water pump (2) all have by-pass valve control.
3. device as claimed in claim 1 is characterized in that said milk of lime Preparation tank (6) is two and side by side pipeline UNICOM milk of lime pump (7) is arranged, and the import and export of milk of lime pump (7) all have by-pass valve control.
4. device as claimed in claim 1 is characterized in that said milk of lime Preparation tank (6), A reactor (3), second reactor (8) and secondary subsider (10) all are equipped with whisking appliance; A reactor also is equipped with steam heating coil in (3).
5. device as claimed in claim 1 is characterized in that said filter (13) is conventional vacuum filter.
6. device as claimed in claim 1 is characterized in that the import and export of said one-level shurry pump (4), secondary shurry pump (9) and three grades of shurry pumps (12) all have by-pass valve control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201687243U CN202508944U (en) | 2012-04-20 | 2012-04-20 | Device for producing phosphoric acid by recycling phosphorus in phosphorus-containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201687243U CN202508944U (en) | 2012-04-20 | 2012-04-20 | Device for producing phosphoric acid by recycling phosphorus in phosphorus-containing waste water |
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| Publication Number | Publication Date |
|---|---|
| CN202508944U true CN202508944U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201687243U Expired - Lifetime CN202508944U (en) | 2012-04-20 | 2012-04-20 | Device for producing phosphoric acid by recycling phosphorus in phosphorus-containing waste water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755061A (en) * | 2013-12-30 | 2014-04-30 | 广西利达磷化工有限公司 | Comprehensive utilization method of phosphoric acid and phosphate industrial wastewater |
| CN104973712A (en) * | 2014-10-23 | 2015-10-14 | 铜陵县明晋生产力促进中心有限公司 | Treatment method and treatment device of phosphogypsum waste water |
| CN110092363A (en) * | 2019-06-04 | 2019-08-06 | 瓮福（集团）有限责任公司 | A kind of low-concentration phosphorus-containing wastewater produces the method for crystallising and device of calcium hydrophosphate fodder |
-
2012
- 2012-04-20 CN CN2012201687243U patent/CN202508944U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755061A (en) * | 2013-12-30 | 2014-04-30 | 广西利达磷化工有限公司 | Comprehensive utilization method of phosphoric acid and phosphate industrial wastewater |
| CN104973712A (en) * | 2014-10-23 | 2015-10-14 | 铜陵县明晋生产力促进中心有限公司 | Treatment method and treatment device of phosphogypsum waste water |
| CN110092363A (en) * | 2019-06-04 | 2019-08-06 | 瓮福（集团）有限责任公司 | A kind of low-concentration phosphorus-containing wastewater produces the method for crystallising and device of calcium hydrophosphate fodder |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |