CN107162278A - A kind of recycling PMIDA produces the handling process of waste water - Google Patents
A kind of recycling PMIDA produces the handling process of waste water Download PDFInfo
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- CN107162278A CN107162278A CN201710570078.0A CN201710570078A CN107162278A CN 107162278 A CN107162278 A CN 107162278A CN 201710570078 A CN201710570078 A CN 201710570078A CN 107162278 A CN107162278 A CN 107162278A
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- pmida
- waste water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A kind of recycling PMIDA produces the handling process of waste water, is related to field of waste water treatment, and the technique includes pretreatment system, SNF embrane methods concentration systems, CWO systems, polymerization dephosphorization system, SNF embrane method deep refining systems and triple effect evaporation system.The present invention is based on SUPER NF UF membranes, CWO systems are that organic phosphine explains core, polymerization dephosphorization is main body, most total phosphorus reaches 99% phosphorous finished product with the DNA purity of conversion per pass >=99% in N-(phosphonomethyl) iminodiacetic acid wastewater at last, the phosphorous finished product can be converted into corresponding phosphorus product, the recycling and minimizing for realizing waste water are utilized, and the waste water total phosphorus finally discharged is all up to standard, harmless；With the advantage that cost of investment is low, operating cost is low, maintenance cost is low.
Description
Technical field
The present invention relates to field of waste water treatment, and in particular to a kind of recycling PMIDA produces the processing work of waste water
Skill.
Background technology
PMIDA produces PMIDA mother liquor in process of production, and there is highly acid, the high total phosphorus, height of containing to contain organic nitrogen, height for it
The characteristic of saliferous, wastewater flow rate is big, and difficulty of governance is big, big to environment waters contamination hazard risk.PMIDA（The (phosphonomethyl)s of N mono-
Iminodiacetic acid）It is the intermediate of synthesizing glyphosate, mainly there is dialkyl phosphite method, chloromethyl phosphoric acid method and Asia at present
Three kinds of preparation methods such as aminoacetaldehyde diethyl acid system.The waste water produced in PMIDA production contains the materials such as a large amount of salt, phosphoric acid, hydrochloric acid, formaldehyde,
Containing a large amount of chlorions, total phosphorus, ammonia nitrogen and 3% PMIDA etc. in PMIDA mother liquor, they belong to reluctant waste water.
At present, the process route of the similar high waste water containing organic phosphine of domestic processing has chemical dephosphorization method, evaporation high temperature incineration to gather
Legal and disodium doctor treatment.Chemical dephosphorization method is combined using traditional materialization and biochemical process, and intractability is larger, is during which needed
The raw materials such as substantial amounts of soda acid are added, processing cost is high, wherein the material of many economic values contained is all abandoned in vain, made
Into huge waste.Evaporate high temperature incineration polymerization and organic phosphine waste water is handled using evaporation mode, evaporation capacity is excessive, energy consumption mistake
Height, cost of investment is high.Compared with first two and with reference to practical engineering application effect, it is excellent that disodium dephosphorization method occupies Technological Economy
Gesture, at home large-scale glyphosate production enterprise of a few families succeed application, application effect is pretty good.But disodium method is in actual applications
It has also been found that its defect：（1）Technique denitrification effect is poor, and a large amount of ammonia nitrogens and more sodium chloride entrainment enter in disodium product, seriously
The quality of disodium is extracted in influence, and then has influence on the quality of disodium deep processed product, influences downstream application market scope；（2）Two
Sodium has certain solubility, but one way extracts total phosphorus less than 80%, and remaining Phosphorus From Wastewater content is still higher after extraction disodium,
Also need to continue dephosphorization advanced treating, be otherwise difficult to harsh waste water total phosphorus index discharge.
The content of the invention
The technical problem solved required for of the invention is to provide a kind of recycling of waste water, minimizing, final to discharge useless
Water total phosphorus harmless PMIDA production wastewater treatment technique up to standard completely.
In order to solve above-mentioned problem of the prior art, the present invention is realized using following technological means：
A kind of recycling PMIDA produces the handling process of waste water, comprises the following steps：
（1）Pretreatment：Collect PMIDA mother liquor be removed after mechanical admixture, with alkali adjust PMIDA mother liquor pH to 7.5~
8.0；
（2）SNF embrane methods are concentrated：Will by pretreated mother liquor by the concentration of two-stage NF membrane until concentrate total phosphorus >=
3000mg/L；
（3）The processing of CWO systems：Dope after two-stage NF membrane is pumped into integrated CWO systems, and air/oxygen is filled into CWO systems
Oxidation, controls one way organophosphor conversion ratio >=90%, and organic removal rate one way >=80%, organic nitrogen is converted into the conversion ratio of ammonia nitrogen
≥90%；
（4）It polymerize dephosphorization：Degradation solution after the processing of CWO systems is cooled to 0~15 DEG C, magnesium salts soluble in water is added and gathers
Symphysis is into the solid for being insoluble in water；
（5）SNF embrane method deep refinings：Concentrated water after polymerization dephosphorization is obtained into refined brine by SUPER NF membrane filtrations.
Further, step（1）Described in alkali be sodium hydroxide.
Further, step（2）Described in by two-stage NF membrane concentration after production water enter triple effect evaporator in evaporate
Desalination obtains salt, condensed water and evaporation raffinate.
Further, step（3）Described in CWO systems be catalysis oxidation integrating device, described CWO system temperatures are
210~230 DEG C, pressure is 4~5MPa.
Further, step（4）Described in salt soluble in water be magnesium salts, the magnesium salts is preferably magnesium chloride,
Further, step（4）Described in be insoluble in water solid through centrifugation post-processing granulation obtain slow-release fertilizer.
Further, step（5）Described in refined brine go evaporative desalination in triple effect evaporation system to obtain salt, condensed water
With evaporation raffinate.
Further, described evaporation raffinate enters CWO systems, and the described evaporation raffinate amount of control≤entrance triple effect steams
Send out the 5% of device total amount.
Described CWO systems：By the dope after two-stage NF membrane by hold-up tank by high-pressure pump pressurization and pneumatics system
Unite after the air/oxygen mixing come, by heat exchanger, organic matter and air/oxygen in dope are carried out in feeding reactor
The exothermic reaction of effect, subsequent gas-liquid mixture is separated through separator.After the processing of CWO systems, COD clearances reach 90%
More than, the degradation solution after processing can enter biochemical system, and salinity clearance reaches more than 90%, can extract as working substance in dangerous waste
Recycle；The system controllability and measurability is strong, is closed system, and security performance is high, is not required to high temperature incineration, non-exhaust emission, without " neighbour keeps away
Effect " " can turn waste into wealth ", can form chemical comprehensive utilization industry.
SUPER NF films are by filtration membrane, flow guiding disc, center pull rod, high pressure solution gas, two in the SNF embrane methods deep refining
End flanges, various seals and attachment bolt composition；Wherein filtration membrane and flow guiding disc are respectively provided with coin-feed otch, filtration membrane
It is stacked alternately with flow guiding disc, center pull rod, which conspires to create film core, to be inserted two end flanges after high-pressure bottle and be fixed, then is combined with pull bar
Formed.Raw water reaches not component base by the gap of film core and high-pressure bottle, and uniform cloth stream enters flow guiding disc, in water conservancy diversion dish cart
Face is flowed in radar scanning mode, enters next group of flow guiding disc and diaphragm from coin-feed otch, in vortex shape in whole film post
Flowing, production water discharges membrane component by central tube.SUPER NF film diaphragm membrane separating. functional layers are thicker, electronegativity is lower, film for this
Surface is more smooth, hydrophilic effect is more preferable, with stronger resistance tocrocking and barotolerance, compared with traditional diaphragm, with longer
Service life, it is general >=3 years；In addition it has resistant to pollution structure design, and fluid passage reaches 2.5mm, Reynolds number>
2500, with more excellent fluid turbulent effect, more preferably, pressure loss is low for diaphragm self-cleaning effect.
The present invention is handled by CWO systems, polymerization dephosphorization and SNF embrane method deep refinings have the advantages that：
（1）Based on SUPER NF UF membranes, CWO systems are that organic phosphine is degraded to core, and polymerization dephosphorization is main body, finally
Total phosphorus in N-(phosphonomethyl) iminodiacetic acid wastewater is reached with the DNA purity of conversion per pass >=99% 99% phosphorous finished product, the phosphorous finished product can turn
Corresponding phosphorus product is turned to, the recycling and minimizing for realizing waste are utilized, and the waste water total phosphorus finally discharged is all up to standard, nothing
Evil；
（2）The present invention realize N/P element resources utilization rate in the high removal efficiency of the organic total nitrogen of one way and total phosphorus, waste water >=
99%；
（3）The present invention is small relative to traditional handicraft floor space, reduces cost of investment, its energy consumption is relatively low in addition, reduces whole
The operating cost of individual technique；
（4）The film used in the present invention is readily disassembled maintenance, easy to maintenance, and single part can be individually replaced in component, drop
Low maintenance cost；
（5）Each system in the present invention can be with automatic control, and system is easy to maintain, reduces cost of labor；
（6）According to present invention process, it is possible to reduce the construction period of engineering, debugging and startup are rapid.
Brief description of the drawings
Fig. 1：PMIDA production wastewater treatment process chart of the present invention；
Wherein：1- pretreatment systems, 2-SNF embrane method concentration systems, 3-CWO systems, 4- polymerization dephosphorization systems, 5-SNF embrane methods are deep
Spend refining system, 6- triple effect evaporation systems.
Embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings, and embodiments of the present invention are not limited to
In as described below.
As shown in figure 1, a kind of handling process of recycling PMIDA production waste water sequentially pass through pretreatment system 1,
SNF embrane methods concentration systems 2, CWO systems 3, polymerization dephosphorization system 4, SNF embrane method deep refinings system 5 and triple effect evaporation system 6.
Embodiment 1：A kind of recycling PMIDA produces the handling process of waste water, and flow is as follows：
（1）Pretreatment system 1：The PMIDA mother liquor of collection is removed after mechanical admixture, PMIDA mother liquor is adjusted with sodium hydroxide
PH to 7.5；
（2）SNF embrane methods concentration systems 2：Then PMIDA mother liquor after treatment is concentrated by two-stage NF membrane until dense
Contracting liquid total phosphorus >=3000mg/L, wherein, production water enters evaporative desalination in triple effect evaporation system and obtained after the concentration of two-stage NF membrane
To salt, condensed water and evaporation raffinate, evaporation raffinate goes the circulation and stress of CWO systems 3 to handle；
（3）CWO systems 3：Dope after two-stage nanofiltration membrane treatment is pumped into integrated CWO systems, and sky is filled into the system
Gas is aoxidized, and it is 210 DEG C to control CWO system temperatures, and pressure is 4MPa, realizes one way organophosphor conversion ratio >=90%, organic matter removal
Rate one way >=80%, organic nitrogen is converted into conversion ratio >=90% of ammonia nitrogen；
（4）It polymerize dephosphorization system 4：Degradation solution after the processing of CWO systems is cooled to 0 DEG C, magnesium chloride polymerization generation is added
It is insoluble in the ammonium magnesium phosphate of water；Wherein gained ammonium magnesium phosphate is centrifuged out and obtain sterling, sterling deep processing is granulated
To slow-release fertilizer；
（5）SNF embrane method deep refinings system 5：Concentrated water after dephosphorization is obtained into refined brine by SUPER NF membrane filtrations；
（6）Triple effect evaporation system 6：Refined brine obtains desalination into the evaporation of triple effect evaporation system and obtains salt, condensed water and evaporation
Raffinate, wherein evaporation raffinate goes CWO system circulations to recycle.
Step（2）And step（6）Middle evaporation raffinate enters CWO systems, control evaporation raffinate amount≤enter triple effect evaporator
The 5% of total amount.
Embodiment 2：A kind of recycling PMIDA produces the handling process of waste water, and flow is as follows：
（1）Pretreatment system 1：The PMIDA mother liquor of collection is removed after mechanical admixture, PMIDA mother liquor is adjusted with sodium hydroxide
PH to 8.0；
（2）SNF embrane methods concentration systems 2：Then PMIDA mother liquor after treatment is concentrated by two-stage NF membrane until dense
Contracting liquid total phosphorus >=3000mg/L, wherein, production water enters evaporative desalination in triple effect evaporation system and obtained after the concentration of two-stage NF membrane
To salt, condensed water and evaporation raffinate, evaporation raffinate goes the circulation and stress of CWO systems 3 to handle；
（3）CWO systems 3：Dope after two-stage nanofiltration membrane treatment is pumped into integrated CWO systems, and oxygen is filled into the system
Gas is aoxidized, and it is 230 DEG C to control CWO system temperatures, and pressure is 5MPa, realizes one way organophosphor conversion ratio >=90%, organic matter removal
Rate one way >=80%, organic nitrogen is converted into conversion ratio >=90% of ammonia nitrogen；
（4）It polymerize dephosphorization system 4：Degradation solution after the processing of CWO systems is cooled to 15 DEG C, magnesium chloride polymerization generation is added
It is insoluble in the ammonium magnesium phosphate of water；Wherein gained ammonium magnesium phosphate is centrifuged out and obtain sterling, sterling deep processing is granulated
To slow-release fertilizer；
（5）SNF embrane method deep refinings system 5：Concentrated water after dephosphorization is obtained into refined brine by SUPER NF membrane filtrations；
（6）Triple effect evaporation system 6：Refined brine obtains desalination into the evaporation of triple effect evaporation system and obtains salt, condensed water and evaporation
Raffinate, wherein evaporation raffinate goes CWO system circulations to recycle.
Step（2）And step（6）Middle evaporation raffinate enters CWO systems, control evaporation raffinate amount≤enter triple effect evaporator
The 5% of total amount.
Embodiment 3：A kind of recycling PMIDA produces the handling process of waste water, and flow is as follows：
（1）Pretreatment system 1：The PMIDA mother liquor of collection is removed after mechanical admixture, PMIDA mother liquor is adjusted with sodium hydroxide
PH to 7.8；
（2）SNF embrane methods concentration systems 2：Then PMIDA mother liquor after treatment is concentrated by two-stage NF membrane until dense
Contracting liquid total phosphorus >=3000mg/L, wherein, production water enters evaporative desalination in triple effect evaporation system and obtained after the concentration of two-stage NF membrane
To salt, condensed water and evaporation raffinate, evaporation raffinate goes the circulation and stress of CWO systems 3 to handle；
（3）CWO systems 3：Dope after two-stage nanofiltration membrane treatment is pumped into integrated CWO systems, and sky is filled into the system
Gas is aoxidized, and it is 220 DEG C to control CWO system temperatures, and pressure is 4.5MPa, realizes one way organophosphor conversion ratio >=90%, and organic matter is gone
Except rate one way >=80%, organic nitrogen is converted into conversion ratio >=90% of ammonia nitrogen；
（4）It polymerize dephosphorization system 4：Degradation solution after the processing of CWO systems is cooled to 8 DEG C, magnesium chloride polymerization generation is added
It is insoluble in the ammonium magnesium phosphate of water；Wherein gained ammonium magnesium phosphate is centrifuged out and obtain sterling, sterling deep processing is granulated
To slow-release fertilizer；
（5）SNF embrane method deep refinings system 5：Concentrated water after dephosphorization is obtained into refined brine by SUPER NF membrane filtrations；
（6）Triple effect evaporation system 6：Refined brine obtains desalination into the evaporation of triple effect evaporation system and obtains salt, condensed water and evaporation
Raffinate, wherein evaporation raffinate goes CWO system circulations to recycle.
Step（2）And step（6）Middle evaporation raffinate enters CWO systems, control evaporation raffinate amount≤enter triple effect evaporator
The 5% of total amount.
Claims (9)
1. a kind of recycling PMIDA produces the handling process of waste water, it is characterised in that the handling process includes following step
Suddenly：
（1）Pretreatment：PMIDA mother liquor is removed after mechanical admixture, and mother liquor pH to 7.5~8.0 is adjusted with alkali；
（2）SNF embrane methods are concentrated：Will by pretreated mother liquor by the concentration of two-stage NF membrane until concentrate total phosphorus >=
3000mg/L；
（3）The processing of CWO systems：Dope after two-stage NF membrane is pumped into integrated CWO systems, and air/oxygen is filled into CWO systems
Oxidation, controls one way organophosphor conversion ratio >=90%, and organic removal rate one way >=80%, organic nitrogen is converted into the conversion ratio of ammonia nitrogen
≥90%；
（4）It polymerize dephosphorization：Degradation solution after the processing of CWO systems is cooled to 0~15 DEG C, magnesium salts soluble in water is added and gathers
Symphysis is into the solid for being insoluble in water；
（5）SNF embrane method deep refinings：Concentrated water after polymerization dephosphorization is obtained into refined brine by SUPER NF membrane filtrations.
2. a kind of recycling PMIDA according to claim 1 produces the handling process of waste water, it is characterised in that step
Suddenly（1）Described in alkali be sodium hydroxide.
3. a kind of recycling PMIDA according to claim 1 produces the handling process of waste water, it is characterised in that step
Suddenly（2）Described in by two-stage NF membrane concentration after production water enter triple effect evaporator in evaporative desalination obtain salt, condensed water and
Evaporate raffinate.
4. a kind of recycling PMIDA according to claim 1 produces the handling process of waste water, it is characterised in that step
Suddenly（3）Described in CWO systems be catalysis oxidation integrating device, described CWO system temperatures are 210~230 DEG C, and pressure is 4
~5MPa.
5. a kind of recycling PMIDA according to claim 1 produces the handling process of waste water, it is characterised in that step
Suddenly（4）Described in salt soluble in water be magnesium salts.
6. a kind of recycling PMIDA according to claim 1 or 4 produces the handling process of waste water, its feature exists
In step（4）Described in salt soluble in water be magnesium chloride.
7. a kind of recycling PMIDA according to claim 1 produces the handling process of waste water, it is characterised in that step
Suddenly（4）Described in be insoluble in water solid through centrifugation post-processing granulation obtain slow-release fertilizer.
8. a kind of recycling PMIDA according to claim 1 produces the handling process of waste water, it is characterised in that step
Suddenly（5）Described in refined brine go in triple effect evaporation system evaporative desalination to obtain salt, condensed water and evaporation raffinate.
9. a kind of recycling PMIDA according to claim 2 or 7 produces the handling process of waste water, its feature exists
In described evaporation raffinate enters CWO systems, the 5% of the described evaporation raffinate amount≤entrance triple effect evaporator total amount of control.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975585A (en) * | 2018-06-22 | 2018-12-11 | 杭州深瑞水务有限公司 | A kind of method of recycling treatment phosphor-containing flame-proof agent production waste water |
| CN109626613A (en) * | 2018-12-24 | 2019-04-16 | 湖北兴发环保科技有限公司 | A kind of efficient method for removing total phosphorus in organic phosphine waste water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348266A (en) * | 2008-09-05 | 2009-01-21 | 江苏扬农化工股份有限公司 | Comprehensive processing method of N-phosphonomethyliminodiacelic acid mother liquor |
| CN103663667A (en) * | 2012-09-19 | 2014-03-26 | 中国中化股份有限公司 | Catalytic wet oxidation pretreatment method of glyphosate production wastewater |
| US20140234196A1 (en) * | 2009-05-18 | 2014-08-21 | Monsanto Technology Llc | Recovery of phosphorus values and salt impurities from aqueous waste streams |
| CN104944398A (en) * | 2015-06-29 | 2015-09-30 | 江西金龙化工有限公司 | Method for recycling glyphosate mother solution |
| CN205773845U (en) * | 2016-05-18 | 2016-12-07 | 杭州上拓环境科技有限公司 | A kind of processing system of N-(phosphonomethyl) iminodiacetic acid wastewater recycling |
-
2017
- 2017-07-13 CN CN201710570078.0A patent/CN107162278A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348266A (en) * | 2008-09-05 | 2009-01-21 | 江苏扬农化工股份有限公司 | Comprehensive processing method of N-phosphonomethyliminodiacelic acid mother liquor |
| US20140234196A1 (en) * | 2009-05-18 | 2014-08-21 | Monsanto Technology Llc | Recovery of phosphorus values and salt impurities from aqueous waste streams |
| CN103663667A (en) * | 2012-09-19 | 2014-03-26 | 中国中化股份有限公司 | Catalytic wet oxidation pretreatment method of glyphosate production wastewater |
| CN104944398A (en) * | 2015-06-29 | 2015-09-30 | 江西金龙化工有限公司 | Method for recycling glyphosate mother solution |
| CN205773845U (en) * | 2016-05-18 | 2016-12-07 | 杭州上拓环境科技有限公司 | A kind of processing system of N-(phosphonomethyl) iminodiacetic acid wastewater recycling |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975585A (en) * | 2018-06-22 | 2018-12-11 | 杭州深瑞水务有限公司 | A kind of method of recycling treatment phosphor-containing flame-proof agent production waste water |
| CN109626613A (en) * | 2018-12-24 | 2019-04-16 | 湖北兴发环保科技有限公司 | A kind of efficient method for removing total phosphorus in organic phosphine waste water |
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