CN107456873A - A kind of membrane treatment process for being used to purify uranium-bearing waste liquid - Google Patents
A kind of membrane treatment process for being used to purify uranium-bearing waste liquid Download PDFInfo
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- CN107456873A CN107456873A CN201710545901.2A CN201710545901A CN107456873A CN 107456873 A CN107456873 A CN 107456873A CN 201710545901 A CN201710545901 A CN 201710545901A CN 107456873 A CN107456873 A CN 107456873A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/58—Multistep processes
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to uranium to convert field, and in particular to a kind of film purification process technique for being used in hex production process produce uranium-bearing process waste liquor.Comprise the following steps：(1) uranium-bearing waste liquid film process cleaning system is established；(2) pre-process；(3) ultrafiltration；(4) nanofiltration；(5) counter-infiltration.The present invention is by establishing film process uranium-bearing effluent purifying processing system, uranium can be purified to the uranium-bearing waste liquid that conversion system generation uranium concentration is about 200~800mg/L, and uranium concentration can be reduced to below 0.05mg/L in permeate after nano-filtration unit (operating pressure 0.3MPa) and reverse osmosis units (operating pressure 1.0MPa) separation, reach discharge standard.Other membrane technology has low energy consumption, simple system and the advantages such as secondary waste is less.
Description
Technical field
The invention belongs to uranium to convert field, and in particular to one kind is used to produce uranium-bearing Waste in hex production process
The film purification process technique of liquid.
Background technology
Purified in uranium during conversion produces natural hex, in process waste liquor generally still containing 200mg/L~
800mg/L metallic uranium.Therefore, the purified treatment of process waste liquor need to reclaim metallic uranium as far as possible, prevent pollution of the uranium to environment.
At present, both at home and abroad to UF6Caused alkaline uranium-bearing liquid waste processing measure mainly has two kinds in production process：First, adopt
Adsorption treatment is swapped with ion-exchange.Second, use Ca (OH)2Alkalization, FeSO4Neutralization, the method for finally adding precipitating reagent
Processing, the qualified discharge of waste water can be achieved after processing.
From uranium conversion process itself, UO2Hydrofluorination prepares UF4Technology and UF4Fluorination prepares UF6Technology has been in
Domestically leading level, but the index such as three waste discharge still suffers from larger gap with external advanced uranium conversion factory, especially
UF6Produce CO in alkaline uranium-bearing waste liquid caused by tail gas elution process3 2-、HCO3 -、F-、Cl-Coexist, prior art removes uranium effect
Difference, it is difficult to reach the discharge highest allowable value 0.05mg/L of waste water.At present, domestic UF6Caused alkalescence contains in production process
The problem of being primarily present in uranium wastewater treatment process shows as：
(1) bicarbonate ion content is higher in alkaline uranium-bearing waste liquid, and resin is imitated to uranium absorption in waste liquid during ion exchange
Fruit in by waste liquid bicarbonate ion content influenceed it is more obvious；
(2) uranium content is minimum in waste liquid after ion exchange absorption processing is down to 1.0mg/L or so, does not reach discharge mark
It is accurate.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of membrane treatment process for being used to purify uranium-bearing waste liquid, so as to utilize
Membrane separation technique, production waste liquid is converted using uranium and pre-processed as stoste, the decontamination of pretreatment unit in checking test system
Effect；Using pretreated alkaline uranium-bearing waste liquid as stoste, through multistage nano-filtration unit and counter-infiltration list under the conditions of different pressures
Member processing, realize the qualified discharge (0.05mg/L) of the uranium and fluorine ion in permeate.
In order to realize this purpose, the present invention adopts the technical scheme that：
A kind of membrane treatment process for being used to purify uranium-bearing waste liquid, comprises the following steps：
(1) uranium-bearing waste liquid film process cleaning system is established
Uranium-bearing waste liquid film process cleaning system includes pretreatment unit, micro-filtration, ultrafiltration apparatus, nanofiltration device, reverse osmosis
Saturating device；
First, pretreatment unit includes original fluid container, raw material pump, disc filter, bag filter；
Original fluid container is used to receive in uranium purifying conversion production process caused uranium-bearing waste liquid to be sampled to it；
Stoste pot bottom manually-operated gate is opened after original fluid container sampling, uranium-bearing waste liquid sequentially enters disc type mistake by raw material pump
Filter and bag filter are pre-processed, and the bulky grain removed by disc filter and bag filter in uranium-bearing waste liquid is miscellaneous
Matter and floating object；
2nd, micro-filtration includes microfiltration membranes, micro-filtration tank；
It will pass through pretreated uranium-bearing waste liquid by microfiltration membranes and remove little particle impurity；
Micro-filtration tank is used to receiving the uranium-bearing waste liquid that exports out from microfiltration membranes to be sampled to it；
3rd, ultrafiltration apparatus includes ultrafiltrate pump, milipore filter, ultrafiltration tank；
Micro-filtration tank sampling after open micro-filtration pot bottom manually-operated gate, uranium-bearing waste liquid by ultrafiltrate pump enter milipore filter to containing
Uranium waste liquid carries out initial gross separation to remove macromolecular；
Ultrafiltration dope after ultrafiltration returns to micro-filtration tank and continues cycling through separation, and ultrafiltration clear liquid enters ultrafiltration tank；
4th, nanofiltration device includes one-level nanofiltration pump, one-level NF membrane, one-level nanofiltration tank, two level nanofiltration pump, two level nanofiltration
Film, two level nanofiltration tank；
The manually-operated gate of ultrafiltration pot bottom is opened after the sampling of ultrafiltration tank, uranium-bearing waste liquid enters one-level by one-level nanofiltration pump
NF membrane is to remove the multivalent ion in uranium-bearing waste liquid；
One-level nanofiltration dope after one-level nanofiltration returns to ultrafiltration tank and continues cycling through separation, and one-level nanofiltration clear liquid is received into one-level
Filter tank；
The manually-operated gate of one-level nanofiltration pot bottom is opened after the sampling of one-level nanofiltration tank, uranium-bearing waste liquid passes through two level nanofiltration pump
Into two level NF membrane to remove the monovalention in uranium-bearing waste liquid；
Two level nanofiltration dope after two level nanofiltration returns to one-level nanofiltration tank and continues cycling through separation, and two level nanofiltration clear liquid enters two
Level nanofiltration tank；
5th, reverse osmosis unit includes booster pump, high-pressure pump, reverse osmosis membrane, counter-infiltration tank, extraordinary sewer pipe；
The manually-operated gate of two level nanofiltration pot bottom is opened after the sampling of two level nanofiltration tank, uranium-bearing waste liquid passes sequentially through booster pump
Enter reverse osmosis membrane with high-pressure pump to remove the trace uranium in uranium-bearing waste liquid；
Counter-infiltration dope after counter-infiltration returns to two level nanofiltration tank and continues cycling through separation, and counter-infiltration clear liquid enters counter-infiltration tank
Then drain into extraordinary sewer pipe；
(2) pre-process
Check and close the manually-operated gate of stoste pot bottom, uranium-bearing waste liquid is added into original fluid container；
The manually-operated gate of opening stoste pot bottom and original fluid container work as uranium-bearing to the electrically operated valve between disc filter successively
When waste liquid is full of the inlet duct of raw material pump, start raw material pump, the uranium-bearing waste liquid in original fluid container flows to micro- by pretreatment unit
In filter tank；
Stop raw material pump operation when the remaining setting water of original fluid container, close stoste pot bottom manually-operated gate and original fluid container extremely
Electrically operated valve between disc filter；
(3) ultrafiltration
Check and successively the manually-operated gate of opening micro-filtration pot bottom and micro-filtration tank to the electrically operated valve between milipore filter；
When uranium-bearing waste liquid is full of the inlet duct of ultrafiltrate pump, start ultrafiltrate pump, the uranium-bearing waste liquid in micro-filtration tank is by super
It is divided into dope and clear liquid after filter membrane, dope is back in micro-filtration tank and circulated, and clear liquid then enters in ultrafiltration tank；
When the remaining flow to setting of the waste liquid in micro-filtration tank, stop ultrafiltration pump operation；
(4) nanofiltration
Check and successively the manually-operated gate of opening ultrafiltration pot bottom and ultrafiltration tank to the stop valve between one-level NF membrane；
When uranium-bearing waste liquid is full of the inlet duct of one-level nanofiltration pump, start one-level nanofiltration pump, the uranium-bearing in ultrafiltration tank gives up
Liquid is divided into dope and clear liquid after one-level NF membrane, and dope is back in ultrafiltration tank and circulated, and clear liquid enters in one-level nanofiltration tank；
Waste liquid in tank to be ultrafiltered is remaining to when setting flow, stops one-level nanofiltration pump operation；
Check and open one-level nanofiltration tank to the stop valve between two level NF membrane；
When uranium-bearing waste liquid is full of the inlet duct of two level nanofiltration pump, start two level nanofiltration pump, containing in one-level nanofiltration tank
Uranium waste liquid is divided into dope and clear liquid after two level NF membrane, and dope is back in one-level nanofiltration tank and circulated, and clear liquid enters two level
In nanofiltration tank；
When the remaining flow to setting of the waste liquid in two level nanofiltration tank, stop two level nanofiltration pump operation；
(5) counter-infiltration
Check and successively open two level nanofiltration pot bottom manually-operated gate and two level nanofiltration tank between reverse osmosis membrane section
Only valve；
When uranium-bearing waste liquid is full of the inlet duct of booster pump, successively start booster pump and high-pressure pump, in two level nanofiltration tank
Uranium-bearing waste liquid be divided into dope and clear liquid after reverse osmosis membrane, dope is back in two level nanofiltration and circulated, and clear liquid enters reverse osmosis
Saturating tank then drains into extraordinary sewer pipe；
When the remaining flow to setting of the waste liquid in two level nanofiltration tank, stop the operation of booster pump and high-pressure pump.
Further, a kind of membrane treatment process for being used to purify uranium-bearing waste liquid as described above, in pretreatment unit, stoste
Tank, the material of raw material pump are polypropylene.
Further, a kind of membrane treatment process for being used to purify uranium-bearing waste liquid as described above, in micro-filtration, microfiltration membranes
Aperture be 1 μm.
Further, a kind of membrane treatment process for being used to purify uranium-bearing waste liquid as described above, in step (2) pretreatment,
The optimum pH scope of microfiltration membranes is 0-14, and operating temperature is 5-50 DEG C, and operation pressure difference is 0.01-0.2MPa.
Further, a kind of membrane treatment process for being used to purify uranium-bearing waste liquid as described above, in ultrafiltration apparatus, milipore filter
For doughnut, membrane aperture is 0.001 μm -0.02 μm, material PVDF.
Further, a kind of membrane treatment process for being used to purify uranium-bearing waste liquid as described above, in step (3) ultrafiltration, surpasses
The operator scheme of filter membrane is external-compression type, and arrangement mode is vertical, operating pressure≤0.5MPa, operting differential pressure≤0.15MPa, is intake
Turbidity≤100NTU, inflow temperature scope are 5-50 DEG C, and optimum pH scope is 0-14.
Further, a kind of membrane treatment process for being used to purify uranium-bearing waste liquid as described above, in nanofiltration device, one-level is received
The material of filter membrane and two level NF membrane is polyamide；The molecular cut off of one-level NF membrane is 300 dalton, two level NF membrane
Molecular cut off is 150 dalton.
Further, a kind of membrane treatment process for being used to purify uranium-bearing waste liquid as described above, in step (4) nanofiltration, one
The operation temperature of level NF membrane and two level NF membrane is 5-45 DEG C, and operating pressure 0-1.5MPa, maximal pressure is reduced to 0.1MPa, is fitted
Suitable pH value range is 2-11.
Further, a kind of membrane treatment process for being used to purify uranium-bearing waste liquid as described above, in step (5) counter-infiltration,
The material of reverse osmosis membrane is polyamide, and aperture is 1/10000 μm, and operation temperature is 5-45 DEG C, operating pressure 0-6.0MPa, most
High pressure is reduced to 0.1MPa, and optimum pH scope is 2-11.
The beneficial effect of technical solution of the present invention is：
Uranium can be purified conversion system and produce uranium concentration by the present invention by establishing film process uranium-bearing effluent purifying processing system
About 200~800mg/L uranium-bearing waste liquid is through nano-filtration unit (operating pressure 0.3MPa) and reverse osmosis units (operating pressure
Uranium concentration can be reduced to below 0.05mg/L in permeate after 1.0MPa) separating, and reach discharge standard.Other membrane technology tool
There are low energy consumption, simple system and the advantages such as secondary waste is less.
Brief description of the drawings
Fig. 1 is a kind of membrane treatment appts structural representation for uranium-bearing liquid waste processing of the invention.
In figure：1. original fluid container, 2. raw material pumps, 3. disc filters, 4. bag filters, 5. microfiltration membranes, 6. micro-filtration tanks, 7.
Ultrafiltrate pump, 8. milipore filters, 9. ultrafiltration dopes, 10. ultrafiltration clear liquids, 11. ultrafiltration tanks, 12. one-level nanofiltration pumps, 13. one-level NF membranes,
14. one-level nanofiltration dope, 15. one-level nanofiltration clear liquids, 16. one-level nanofiltration tanks, 17. two level nanofiltration pumps, 18. two level NF membranes, 19.
Two level nanofiltration dope, 20. two level nanofiltration clear liquids, 21. two level nanofiltration tanks, 22. booster pumps, 23. high-pressure pumps, 24. reverse osmosis membranes,
25. counter-infiltration dope, 26 counter-infiltration clear liquids, 27. counter-infiltration tanks, 28. extraordinary sewer pipes.
Embodiment
Technical solution of the present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of membrane treatment process for being used to purify uranium-bearing waste liquid of the present invention, comprises the following steps：(1) establish
Uranium-bearing waste liquid film process cleaning system
Uranium-bearing waste liquid film process cleaning system includes pretreatment unit, micro-filtration, ultrafiltration apparatus, nanofiltration device, reverse osmosis
Saturating device；
First, pretreatment unit includes original fluid container, raw material pump, disc filter, bag filter；
Original fluid container is used to receive in uranium purifying conversion production process caused uranium-bearing waste liquid to be sampled to it；
Stoste pot bottom manually-operated gate is opened after original fluid container sampling, uranium-bearing waste liquid sequentially enters disc type mistake by raw material pump
Filter and bag filter are pre-processed, and the bulky grain removed by disc filter and bag filter in uranium-bearing waste liquid is miscellaneous
Matter and floating object；
In pretreatment unit, original fluid container, the material of raw material pump are polypropylene；
2nd, micro-filtration includes microfiltration membranes, micro-filtration tank；
It will pass through pretreated uranium-bearing waste liquid by microfiltration membranes and remove little particle impurity；
Micro-filtration tank is used to receiving the uranium-bearing waste liquid that exports out from microfiltration membranes to be sampled to it；
In micro-filtration, the aperture of microfiltration membranes is 1 μm；
3rd, ultrafiltration apparatus includes ultrafiltrate pump, milipore filter, ultrafiltration tank；
Micro-filtration tank sampling after open micro-filtration pot bottom manually-operated gate, uranium-bearing waste liquid by ultrafiltrate pump enter milipore filter to containing
Uranium waste liquid carries out initial gross separation to remove macromolecular；
Ultrafiltration dope after ultrafiltration returns to micro-filtration tank and continues cycling through separation, and ultrafiltration clear liquid enters ultrafiltration tank；
In ultrafiltration apparatus, milipore filter is doughnut, and membrane aperture is 0.001 μm -0.02 μm, material PVDF；
4th, nanofiltration device includes one-level nanofiltration pump, one-level NF membrane, one-level nanofiltration tank, two level nanofiltration pump, two level nanofiltration
Film, two level nanofiltration tank；
The manually-operated gate of ultrafiltration pot bottom is opened after the sampling of ultrafiltration tank, uranium-bearing waste liquid enters one-level by one-level nanofiltration pump
NF membrane is to remove the multivalent ion in uranium-bearing waste liquid；
One-level nanofiltration dope after one-level nanofiltration returns to ultrafiltration tank and continues cycling through separation, and one-level nanofiltration clear liquid is received into one-level
Filter tank；
The manually-operated gate of one-level nanofiltration pot bottom is opened after the sampling of one-level nanofiltration tank, uranium-bearing waste liquid passes through two level nanofiltration pump
Into two level NF membrane to remove the monovalention in uranium-bearing waste liquid；
Two level nanofiltration dope after two level nanofiltration returns to one-level nanofiltration tank and continues cycling through separation, and two level nanofiltration clear liquid enters two
Level nanofiltration tank；
In nanofiltration device, the material of one-level NF membrane and two level NF membrane is polyamide；The retention molecule of one-level NF membrane
Measure as 300 dalton, the molecular cut off of two level NF membrane is 150 dalton；
5th, reverse osmosis unit includes booster pump, high-pressure pump, reverse osmosis membrane, counter-infiltration tank, extraordinary sewer pipe；
The manually-operated gate of two level nanofiltration pot bottom is opened after the sampling of two level nanofiltration tank, uranium-bearing waste liquid passes sequentially through booster pump
Enter reverse osmosis membrane with high-pressure pump to remove the trace uranium in uranium-bearing waste liquid；
Counter-infiltration dope after counter-infiltration returns to two level nanofiltration tank and continues cycling through separation, and counter-infiltration clear liquid enters counter-infiltration tank
Then drain into extraordinary sewer pipe；
(2) pre-process
Check and close the manually-operated gate of stoste pot bottom, uranium-bearing waste liquid is added into original fluid container；
The manually-operated gate of opening stoste pot bottom and original fluid container work as uranium-bearing to the electrically operated valve between disc filter successively
When waste liquid is full of the inlet duct of raw material pump, start raw material pump, the uranium-bearing waste liquid in original fluid container flows to micro- by pretreatment unit
In filter tank；
Stop raw material pump operation when the remaining setting water of original fluid container, close stoste pot bottom manually-operated gate and original fluid container extremely
Electrically operated valve between disc filter；
The optimum pH scope of microfiltration membranes is 0-14, and operating temperature is 5-50 DEG C, and operation pressure difference is 0.01-0.2MPa；
(3) ultrafiltration
Check and successively the manually-operated gate of opening micro-filtration pot bottom and micro-filtration tank to the electrically operated valve between milipore filter；
When uranium-bearing waste liquid is full of the inlet duct of ultrafiltrate pump, start ultrafiltrate pump, the uranium-bearing waste liquid in micro-filtration tank is by super
It is divided into dope and clear liquid after filter membrane, dope is back in micro-filtration tank and circulated, and clear liquid then enters in ultrafiltration tank；
When the remaining flow to setting of the waste liquid in micro-filtration tank, stop ultrafiltration pump operation；
In ultrafiltration, the operator scheme of milipore filter is external-compression type, and arrangement mode is vertical, operating pressure≤0.5MPa, work
Pressure difference≤0.15MPa, influent turbidity≤100NTU, inflow temperature scope are 5-50 DEG C, and optimum pH scope is 0-14；
(4) nanofiltration
Check and successively the manually-operated gate of opening ultrafiltration pot bottom and ultrafiltration tank to the stop valve between one-level NF membrane；
When uranium-bearing waste liquid is full of the inlet duct of one-level nanofiltration pump, start one-level nanofiltration pump, the uranium-bearing in ultrafiltration tank gives up
Liquid is divided into dope and clear liquid after one-level NF membrane, and dope is back in ultrafiltration tank and circulated, and clear liquid enters in one-level nanofiltration tank；
Waste liquid in tank to be ultrafiltered is remaining to when setting flow, stops one-level nanofiltration pump operation；
Check and open one-level nanofiltration tank to the stop valve between two level NF membrane；
When uranium-bearing waste liquid is full of the inlet duct of two level nanofiltration pump, start two level nanofiltration pump, containing in one-level nanofiltration tank
Uranium waste liquid is divided into dope and clear liquid after two level NF membrane, and dope is back in one-level nanofiltration tank and circulated, and clear liquid enters two level
In nanofiltration tank；
When the remaining flow to setting of the waste liquid in two level nanofiltration tank, stop two level nanofiltration pump operation；
In nanofiltration, the operation temperature of one-level NF membrane and two level NF membrane is 5-45 DEG C, operating pressure 0-1.5MPa, most
High pressure is reduced to 0.1MPa, and optimum pH scope is 2-11；
(5) counter-infiltration
Check and successively open two level nanofiltration pot bottom manually-operated gate and two level nanofiltration tank between reverse osmosis membrane section
Only valve；
When uranium-bearing waste liquid is full of the inlet duct of booster pump, successively start booster pump and high-pressure pump, in two level nanofiltration tank
Uranium-bearing waste liquid be divided into dope and clear liquid after reverse osmosis membrane, dope is back in two level nanofiltration and circulated, and clear liquid enters reverse osmosis
Saturating tank then drains into extraordinary sewer pipe；
When the remaining flow to setting of the waste liquid in two level nanofiltration tank, stop the operation of booster pump and high-pressure pump.
The material of reverse osmosis membrane is polyamide, and aperture is 1/10000 μm, and operation temperature is 5-45 DEG C, operating pressure 0-
6.0MPa, maximal pressure are reduced to 0.1MPa, and optimum pH scope is 2-11.
Claims (10)
1. a kind of membrane treatment process for being used to purify uranium-bearing waste liquid, it is characterised in that comprise the following steps：
(1) uranium-bearing waste liquid film process cleaning system is established
Uranium-bearing waste liquid film process cleaning system includes pretreatment unit, micro-filtration, ultrafiltration apparatus, nanofiltration device, counter-infiltration dress
Put；
First, pretreatment unit includes original fluid container, raw material pump, disc filter, bag filter；
Original fluid container is used to receive in uranium purifying conversion production process caused uranium-bearing waste liquid to be sampled to it；
Stoste pot bottom manually-operated gate is opened after original fluid container sampling, uranium-bearing waste liquid sequentially enters disc filter by raw material pump
Pre-processed with bag filter, by disc filter and bag filter remove large granular impurity in uranium-bearing waste liquid and
Floating object；
2nd, micro-filtration includes microfiltration membranes, micro-filtration tank；
It will pass through pretreated uranium-bearing waste liquid by microfiltration membranes and remove little particle impurity；
Micro-filtration tank is used to receiving the uranium-bearing waste liquid that exports out from microfiltration membranes to be sampled to it；
3rd, ultrafiltration apparatus includes ultrafiltrate pump, milipore filter, ultrafiltration tank；
Micro-filtration pot bottom manually-operated gate is opened after micro-filtration tank sampling, uranium-bearing waste liquid is given up by ultrafiltrate pump into milipore filter to uranium-bearing
Liquid carries out initial gross separation to remove macromolecular；
Ultrafiltration dope after ultrafiltration returns to micro-filtration tank and continues cycling through separation, and ultrafiltration clear liquid enters ultrafiltration tank；
4th, nanofiltration device includes one-level nanofiltration pump, one-level NF membrane, one-level nanofiltration tank, two level nanofiltration pump, two level NF membrane, two
Level nanofiltration tank；
The manually-operated gate of ultrafiltration pot bottom is opened after the sampling of ultrafiltration tank, uranium-bearing waste liquid enters one-level nanofiltration by one-level nanofiltration pump
Film is to remove the multivalent ion in uranium-bearing waste liquid；
One-level nanofiltration dope after one-level nanofiltration returns to ultrafiltration tank and continues cycling through separation, and one-level nanofiltration clear liquid enters one-level nanofiltration
Tank；
The manually-operated gate of one-level nanofiltration pot bottom is opened after the sampling of one-level nanofiltration tank, uranium-bearing waste liquid is entered by two level nanofiltration pump
Two level NF membrane is to remove the monovalention in uranium-bearing waste liquid；
Two level nanofiltration dope after two level nanofiltration returns to one-level nanofiltration tank and continues cycling through separation, and two level nanofiltration clear liquid is received into two level
Filter tank；
5th, reverse osmosis unit includes booster pump, high-pressure pump, reverse osmosis membrane, counter-infiltration tank, extraordinary sewer pipe；
The manually-operated gate of two level nanofiltration pot bottom is opened after the sampling of two level nanofiltration tank, uranium-bearing waste liquid passes sequentially through booster pump and height
Press pump enters reverse osmosis membrane to remove the trace uranium in uranium-bearing waste liquid；
Counter-infiltration dope after counter-infiltration returns to two level nanofiltration tank and continues cycling through separation, then counter-infiltration clear liquid enters counter-infiltration tank
It is discharged into extraordinary sewer pipe；
(2) pre-process
Check and close the manually-operated gate of stoste pot bottom, uranium-bearing waste liquid is added into original fluid container；
The manually-operated gate of opening stoste pot bottom and original fluid container are to the electrically operated valve between disc filter successively, when uranium-bearing waste liquid
During inlet duct full of raw material pump, start raw material pump, the uranium-bearing waste liquid in original fluid container flows to micro-filtration tank by pretreatment unit
In；
Stop raw material pump operation when the remaining setting water of original fluid container, close stoste pot bottom manually-operated gate and original fluid container to disc type
Electrically operated valve between filter；
(3) ultrafiltration
Check and successively the manually-operated gate of opening micro-filtration pot bottom and micro-filtration tank to the electrically operated valve between milipore filter；
When uranium-bearing waste liquid is full of the inlet duct of ultrafiltrate pump, start ultrafiltrate pump, the uranium-bearing waste liquid in micro-filtration tank passes through milipore filter
After be divided into dope and clear liquid, dope is back in micro-filtration tank and circulated, clear liquid then enter ultrafiltration tank in；
When the remaining flow to setting of the waste liquid in micro-filtration tank, stop ultrafiltration pump operation；
(4) nanofiltration
Check and successively the manually-operated gate of opening ultrafiltration pot bottom and ultrafiltration tank to the stop valve between one-level NF membrane；
When uranium-bearing waste liquid is full of the inlet duct of one-level nanofiltration pump, start one-level nanofiltration pump, the uranium-bearing waste liquid warp in ultrafiltration tank
It is divided into dope and clear liquid after crossing one-level NF membrane, dope is back in ultrafiltration tank and circulated, and clear liquid enters in one-level nanofiltration tank；
Waste liquid in tank to be ultrafiltered is remaining to when setting flow, stops one-level nanofiltration pump operation；
Check and open one-level nanofiltration tank to the stop valve between two level NF membrane；
When uranium-bearing waste liquid is full of the inlet duct of two level nanofiltration pump, start two level nanofiltration pump, the uranium-bearing in one-level nanofiltration tank gives up
Liquid is divided into dope and clear liquid after two level NF membrane, and dope is back in one-level nanofiltration tank and circulated, and clear liquid enters two level nanofiltration
In tank；
When the remaining flow to setting of the waste liquid in two level nanofiltration tank, stop two level nanofiltration pump operation；
(5) counter-infiltration
Check and successively the manually-operated gate of opening two level nanofiltration pot bottom and two level nanofiltration tank to the stop valve between reverse osmosis membrane；
When uranium-bearing waste liquid is full of the inlet duct of booster pump, successively start booster pump and high-pressure pump, containing in two level nanofiltration tank
Uranium waste liquid is divided into dope and clear liquid after reverse osmosis membrane, and dope is back in two level nanofiltration and circulated, and clear liquid enters counter-infiltration tank
Then drain into extraordinary sewer pipe；
When the remaining flow to setting of the waste liquid in two level nanofiltration tank, stop the operation of booster pump and high-pressure pump.
A kind of 2. membrane treatment process for being used to purify uranium-bearing waste liquid as claimed in claim 1, it is characterised in that：Pretreatment unit
In, original fluid container, the material of raw material pump are polypropylene.
A kind of 3. membrane treatment process for being used to purify uranium-bearing waste liquid as claimed in claim 1, it is characterised in that：Micro-filtration
In, the aperture of microfiltration membranes is 1 μm.
A kind of 4. membrane treatment process for being used to purify uranium-bearing waste liquid as claimed in claim 3, it is characterised in that：Step (2) is pre-
In processing, the optimum pH scope of microfiltration membranes is 0-14, and operating temperature is 5-50 DEG C, and operation pressure difference is 0.01-0.2MPa.
A kind of 5. membrane treatment process for being used to purify uranium-bearing waste liquid as claimed in claim 1, it is characterised in that：Ultrafiltration apparatus
In, milipore filter is doughnut, and membrane aperture is 0.001 μm -0.02 μm, material PVDF.
A kind of 6. membrane treatment process for being used to purify uranium-bearing waste liquid as claimed in claim 5, it is characterised in that：Step (3) is super
In filter, the operator scheme of milipore filter is external-compression type, and arrangement mode is vertical, operating pressure≤0.5MPa, operting differential pressure≤
0.15MPa, influent turbidity≤100NTU, inflow temperature scope are 5-50 DEG C, and optimum pH scope is 0-14.
A kind of 7. membrane treatment process for being used to purify uranium-bearing waste liquid as claimed in claim 1, it is characterised in that：Nanofiltration device
In, the material of one-level NF membrane and two level NF membrane is polyamide；The molecular cut off of one-level NF membrane is 300 dalton, two
The molecular cut off of level NF membrane is 150 dalton.
A kind of 8. membrane treatment process for being used to purify uranium-bearing waste liquid as claimed in claim 7, it is characterised in that：Step (4) is received
In filter, the operation temperature of one-level NF membrane and two level NF membrane is 5-45 DEG C, and operating pressure 0-1.5MPa, maximal pressure is reduced to
0.1MPa, optimum pH scope are 2-11.
A kind of 9. membrane treatment process for being used to purify uranium-bearing waste liquid as claimed in claim 1, it is characterised in that：Step (5) is anti-
In infiltration, the material of reverse osmosis membrane is polyamide, and aperture is 1/10000 μm, and operation temperature is 5-45 DEG C, operating pressure 0-
6.0MPa, maximal pressure are reduced to 0.1MPa, and optimum pH scope is 2-11.
A kind of 10. membrane treatment process for being used to purify uranium-bearing waste liquid as claimed in claim 1, it is characterised in that：Pretreatment dress
In putting, original fluid container, the material of raw material pump are polypropylene；In micro-filtration, the aperture of microfiltration membranes is 1 μm；In ultrafiltration apparatus, ultrafiltration
Film is doughnut, and membrane aperture is 0.001 μm -0.02 μm, material PVDF；In nanofiltration device, one-level NF membrane and two level are received
The material of filter membrane is polyamide；The molecular cut off of one-level NF membrane is 300 dalton, and the molecular cut off of two level NF membrane is
150 dalton；
In step (2) pretreatment, the optimum pH scope of microfiltration membranes is 0-14, and operating temperature is 5-50 DEG C, and operation pressure difference is
0.01-0.2MPa；
In step (3) ultrafiltration, the operator scheme of milipore filter is external-compression type, and arrangement mode is vertical, operating pressure≤0.5MPa, work
Make pressure difference≤0.15MPa, influent turbidity≤100NTU, inflow temperature scope is 5-50 DEG C, and optimum pH scope is 0-14；
In step (4) nanofiltration, the operation temperature of one-level NF membrane and two level NF membrane is 5-45 DEG C, operating pressure 0-
1.5MPa, maximal pressure are reduced to 0.1MPa, and optimum pH scope is 2-11；
In step (5) counter-infiltration, the material of reverse osmosis membrane is polyamide, and aperture is 1/10000 μm, and operation temperature is 5-45 DEG C,
Operating pressure is 0-6.0MPa, and maximal pressure is reduced to 0.1MPa, and optimum pH scope is 2-11.
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| CN107481780A (en) * | 2017-07-06 | 2017-12-15 | 中核四0四有限公司 | A kind of membrane treatment appts for uranium-bearing liquid waste processing |
| CN108470593A (en) * | 2018-01-24 | 2018-08-31 | 中国原子能科学研究院 | The treatment process of ammonium diuranate mother liquor of precipitation of ammonium |
| CN109411106A (en) * | 2018-12-11 | 2019-03-01 | 核工业理化工程研究院 | The decontamination waste liquid near-zero release processing unit and its processing method of uranium-bearing and detergent |
| CN109987738A (en) * | 2017-12-29 | 2019-07-09 | 中核四0四有限公司 | Uranium recovery process in a kind of uranium-bearing waste liquid |
| CN110204071A (en) * | 2019-06-05 | 2019-09-06 | 中核新能核工业工程有限责任公司 | A method of realizing that uranium-bearing fluoride waste minimizes |
| CN112708759A (en) * | 2020-11-27 | 2021-04-27 | 核工业北京化工冶金研究院 | Method for enriching uranium from sulfuric acid leaching solution |
| CN112779426A (en) * | 2020-11-30 | 2021-05-11 | 核工业北京化工冶金研究院 | CO (carbon monoxide)2+O2Method for recovering uranium from waste water of in-situ leaching uranium mining evaporation pool |
| CN113198324A (en) * | 2021-05-07 | 2021-08-03 | 中核四0四有限公司 | Nanofiltration device and method for advanced purification treatment of uranium-containing wastewater from uranium purification and conversion |
| CN114014463A (en) * | 2021-11-08 | 2022-02-08 | 核工业北京化工冶金研究院 | Underground water surface treatment method and ex-service treatment method of in-situ leaching uranium mining base |
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| CN107481780A (en) * | 2017-07-06 | 2017-12-15 | 中核四0四有限公司 | A kind of membrane treatment appts for uranium-bearing liquid waste processing |
| CN109987738A (en) * | 2017-12-29 | 2019-07-09 | 中核四0四有限公司 | Uranium recovery process in a kind of uranium-bearing waste liquid |
| CN108470593A (en) * | 2018-01-24 | 2018-08-31 | 中国原子能科学研究院 | The treatment process of ammonium diuranate mother liquor of precipitation of ammonium |
| CN109411106B (en) * | 2018-12-11 | 2024-01-02 | 核工业理化工程研究院 | Near-zero emission treatment device and treatment method for decontaminating waste liquid containing uranium and detergent |
| CN109411106A (en) * | 2018-12-11 | 2019-03-01 | 核工业理化工程研究院 | The decontamination waste liquid near-zero release processing unit and its processing method of uranium-bearing and detergent |
| CN110204071A (en) * | 2019-06-05 | 2019-09-06 | 中核新能核工业工程有限责任公司 | A method of realizing that uranium-bearing fluoride waste minimizes |
| CN112708759A (en) * | 2020-11-27 | 2021-04-27 | 核工业北京化工冶金研究院 | Method for enriching uranium from sulfuric acid leaching solution |
| CN112779426B (en) * | 2020-11-30 | 2022-08-19 | 核工业北京化工冶金研究院 | CO (carbon monoxide) 2 +O 2 Method for recycling uranium in wastewater of in-situ leaching uranium mining evaporation pool |
| CN112779426A (en) * | 2020-11-30 | 2021-05-11 | 核工业北京化工冶金研究院 | CO (carbon monoxide)2+O2Method for recovering uranium from waste water of in-situ leaching uranium mining evaporation pool |
| CN113198324A (en) * | 2021-05-07 | 2021-08-03 | 中核四0四有限公司 | Nanofiltration device and method for advanced purification treatment of uranium-containing wastewater from uranium purification and conversion |
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Application publication date: 20171212 |