CN107098431A - A kind of method that phosphorus is reclaimed in waste water - Google Patents
A kind of method that phosphorus is reclaimed in waste water Download PDFInfo
- Publication number
- CN107098431A CN107098431A CN201710187485.3A CN201710187485A CN107098431A CN 107098431 A CN107098431 A CN 107098431A CN 201710187485 A CN201710187485 A CN 201710187485A CN 107098431 A CN107098431 A CN 107098431A
- Authority
- CN
- China
- Prior art keywords
- waste water
- phosphorus
- reaction
- reclaimed
- precipitations
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 21
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 20
- 239000011574 phosphorus Substances 0.000 title claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 238000001556 precipitation Methods 0.000 claims abstract description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 8
- CKMXBZGNNVIXHC-UHFFFAOYSA-L ammonium magnesium phosphate hexahydrate Chemical compound [NH4+].O.O.O.O.O.O.[Mg+2].[O-]P([O-])([O-])=O CKMXBZGNNVIXHC-UHFFFAOYSA-L 0.000 claims abstract description 7
- XRHGYUZYPHTUJZ-UHFFFAOYSA-N 4-chlorobenzoic acid Chemical compound OC(=O)C1=CC=C(Cl)C=C1 XRHGYUZYPHTUJZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 6
- 229910017958 MgNH Inorganic materials 0.000 claims abstract description 5
- 230000035484 reaction time Effects 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000012452 mother liquor Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 239000003337 fertilizer Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract 1
- 239000010865 sewage Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
- C01B25/451—Phosphates containing plural metal, or metal and ammonium containing metal and ammonium
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Removal Of Specific Substances (AREA)
- Fertilizers (AREA)
Abstract
Have the present invention relates to a kind of method that phosphorus is reclaimed in waste water, including step：(1) reaction waste volume A is determined；(2) 0.16% 0.24% polyacrylamide and 0.08% 0.12% parachlorobenzoic-acid are added in pending waste water；(3) reacting system PH value is adjusted to 8.7 with NaOH chip solids and (1+1) HCl solution；(4) MgCl is added2To n (Mg2+)：N (P)=1:1；(5) controlling reaction temperature, ultraviolet irradiation intensity, mixing speed and reaction time；(6) reaction precipitation is filtered, and obtains MAP precipitations；(7) after MAP precipitations being crushed, dried, guanite (MgNH is obtained4PO4·6H2O), the recovery of Phosphorus From Wastewater is completed.87% is may be up to using the rate of recovery of this method Phosphorus From Wastewater, the guanite of generation is precipitated as rhomboidal crystal, and purity belongs to the Chemical slow-release compound fertilizer of high-quality up to 90%.
Description
Technical field
The invention belongs to technical field of sewage, the method that phosphorus is reclaimed in particularly a kind of waste water.
Background technology
In current sanitary sewage and part industrial wastewater, organism kinds are more, content is high, often containing a large amount of COD, total nitrogen
(TN) and total phosphorus (TP), phenols and melanoidin etc., if being directly discharged into natural water eutrophication etc. can be caused serious dirty
Dye, the main method of the waste water of country's processing at present has A/0, A2The technique such as/0, the major part that can effectively remove in waste water is organic
Thing.However, traditional biochemical method dephosphorization and denitrification process (A2/ 0) residence time it is long, operating cost is high, treatment effect compared with
Difference, it is low to the phosphatic treatment effeciency of waste water, it is impossible to meet total phosphorus emission request (<1mg·L-1), cause and there are discharge beyond standards
Phenomenon.MAP methods are a kind of current more effective methods for administering water pollution, react general principle and are,
Ksp=2.51 × 10-13,pKsp=12.6
Side reaction is as follows
Mg2++2OH-=Mg (OH)2↓
MAP methods provide for the new method that the scientific and technical personnel of this area further research and develop recovery phosphorus in waste water on this basis can
Energy.
The content of the invention
The purpose of the present invention be in view of the shortcomings of the prior art, and propose in a kind of waste water reclaim phosphorus method.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of method that phosphorus is reclaimed in waste water, including step are as follows：
(1) reaction system vessel volume A is determined, the pending waste water of A volumes is filled in reaction system container；
(2) polyacrylamide and account for for accounting for that wastewater quality percentage is 0.16%-0.24% are added in pending waste water
Wastewater quality percentage is 0.08%-0.12% parachlorobenzoic-acid, and reaction solution mother liquor is made；
(3) reacting system PH value is adjusted to 8.7 with NaOH chip solids and (1+1) HCl solution；
(4) MgCl is added2To n (Mg2+)：N (P)=1:1；
(5) reaction condition is controlled, reaction system is heated to 35-45 DEG C, using ultraviolet irradiation, rotor stirring, reaction time
For 25min-40min；
(6) reaction precipitation is filtered, obtains MAP precipitations；
(7) after MAP precipitations being crushed, dried, guanite (MgNH is obtained4PO4·6H2O), the recovery of Phosphorus From Wastewater is completed.
Moreover, the intensity of ultraviolet irradiation is in the step (5)：2μW/cm2。
Moreover, rotor mixing speed is in the step (5)：120r/min.
Advantages and positive effects of the present invention are：
The present invention passes through the addition of polyacrylamide and parachlorobenzoic-acid, control mixing speed, ultraviolet irradiation and reaction temperature
The reaction conditions such as degree, after precipitation is reclaimed, 87%, the guanite of generation are may be up to using the rate of recovery of this method Phosphorus From Wastewater
Rhomboidal crystal is precipitated as, purity belongs to the Chemical slow-release compound fertilizer of high-quality up to 90%.
Embodiment
The embodiment of the present invention is further described below：It is emphasized that embodiment of the present invention is explanation
Property, rather than it is limited, therefore the present invention is not limited to the embodiment described in embodiment, it is every by ability
The other embodiment that field technique personnel's technique according to the invention scheme is drawn, also belongs to the scope of protection of the invention.
A kind of method that phosphorus is reclaimed in waste water, including step are as follows：
(1) reaction system vessel volume A is determined, the pending waste water of A volumes is filled in reaction system container；
(2) polyacrylamide and 0.08%- by mass percentage for 0.16%-0.24% are added in pending waste water
0.12% parachlorobenzoic-acid, is made reaction solution mother liquor；
(3) reacting system PH value is adjusted to 8.7 with NaOH chip solids and (1+1) HCl solution；
(4) MgCl is added2To n (Mg2+)：N (P)=1:1；
(5) reaction condition is controlled, reaction system is heated to 35-45 DEG C, using ultraviolet irradiation, rotor stirring, reaction time
For 25min-40min；
Wherein, the intensity of the ultraviolet irradiation is：2μW/cm2。
Wherein, the rotor mixing speed is：120r/min.
(6) reaction precipitation is filtered, obtains MAP precipitations；
(7) after MAP precipitations being crushed, dried, guanite (MgNH is obtained4PO4·6H2O), the recovery of Phosphorus From Wastewater is completed.
Example
(1) using 5L barreleds container as reaction system, 5L or so waste water is added；
(2) polyacrylamide 10g and parachlorobenzoic-acid 5g is added, reaction solution mother liquor is made；
(3) reacting system PH value is adjusted to 8.7 with NaOH chip solids and (1+1) HCl solution；
(4) MgCl is added2To n (Mg2+)：N (P)=1:1；
(5) reaction condition is controlled, reaction system is heated to 40 DEG C, using ultraviolet irradiation, rotor stirring, the reaction time is
30min；
Wherein, the intensity of the ultraviolet irradiation is：2μW/cm2。
Wherein, the rotor mixing speed is：120r/min.
(6) reaction precipitation is filtered, obtains MAP precipitations；
(7) after MAP precipitations being crushed, dried, guanite (MgNH is obtained4PO4·6H2O), the recovery of Phosphorus From Wastewater is completed.
Claims (3)
1. the method for phosphorus is reclaimed in a kind of waste water, it is characterised in that as follows including step：
(1) reaction system vessel volume A is determined, the pending waste water of A volumes is filled in reaction system container；
(2) polyacrylamide and account for waste water for accounting for that wastewater quality percentage is 0.16%-0.24% are added in pending waste water
Mass percent is 0.08%-0.12% parachlorobenzoic-acid, and reaction solution mother liquor is made；
(3) reacting system PH value is adjusted to 8.7 with NaOH chip solids and (1+1) HCl solution；
(4) MgCl is added2To n (Mg2+)：N (P)=1:1；
(5) reaction condition is controlled, reaction system is heated to 35-45 DEG C, using ultraviolet irradiation, rotor stirring, the reaction time is
25min-40min；
(6) reaction precipitation is filtered, obtains MAP precipitations；
(7) after MAP precipitations being crushed, dried, guanite (MgNH is obtained4PO4·6H2O), the recovery of Phosphorus From Wastewater is completed.
2. the method for phosphorus is reclaimed in waste water according to claim 1, it is characterised in that：Ultraviolet irradiation in the step (5)
Intensity be：2μW/cm2。
3. the method for phosphorus is reclaimed in waste water according to claim 1, it is characterised in that：Rotor is stirred in the step (5)
Speed is：120r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187485.3A CN107098431A (en) | 2017-03-27 | 2017-03-27 | A kind of method that phosphorus is reclaimed in waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187485.3A CN107098431A (en) | 2017-03-27 | 2017-03-27 | A kind of method that phosphorus is reclaimed in waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107098431A true CN107098431A (en) | 2017-08-29 |
Family
ID=59675928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710187485.3A Pending CN107098431A (en) | 2017-03-27 | 2017-03-27 | A kind of method that phosphorus is reclaimed in waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107098431A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2431336A1 (en) * | 2010-09-20 | 2012-03-21 | Akwadok BVBA | Method for purifying wastewater with ammonium removal |
| CN103951112A (en) * | 2014-05-13 | 2014-07-30 | 中国科学院城市环境研究所 | Method for removing heavy metals in wastewater phosphorus recovery product |
| CN103951113A (en) * | 2014-05-13 | 2014-07-30 | 中国科学院城市环境研究所 | Method for removing tetracycline antibiotics in wastewater phosphorus recovery product |
| CN104310629A (en) * | 2014-09-24 | 2015-01-28 | 同济大学 | Method for safely utilizing livestock and poultry biogas liquid in farmland |
| CN204607756U (en) * | 2015-03-12 | 2015-09-02 | 徐颋 | A kind of for Wastewater Pretreatment and the crystallization apparatus reclaiming magnesium ammonium phosphate |
| CN105923836A (en) * | 2016-06-20 | 2016-09-07 | 东北大学 | Method for treating vanadium industrial wastewater through magnesium-process desulfurization waste |
-
2017
- 2017-03-27 CN CN201710187485.3A patent/CN107098431A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2431336A1 (en) * | 2010-09-20 | 2012-03-21 | Akwadok BVBA | Method for purifying wastewater with ammonium removal |
| CN103951112A (en) * | 2014-05-13 | 2014-07-30 | 中国科学院城市环境研究所 | Method for removing heavy metals in wastewater phosphorus recovery product |
| CN103951113A (en) * | 2014-05-13 | 2014-07-30 | 中国科学院城市环境研究所 | Method for removing tetracycline antibiotics in wastewater phosphorus recovery product |
| CN104310629A (en) * | 2014-09-24 | 2015-01-28 | 同济大学 | Method for safely utilizing livestock and poultry biogas liquid in farmland |
| CN204607756U (en) * | 2015-03-12 | 2015-09-02 | 徐颋 | A kind of for Wastewater Pretreatment and the crystallization apparatus reclaiming magnesium ammonium phosphate |
| CN105923836A (en) * | 2016-06-20 | 2016-09-07 | 东北大学 | Method for treating vanadium industrial wastewater through magnesium-process desulfurization waste |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170829 |
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| RJ01 | Rejection of invention patent application after publication |