CN110357292A - A kind of nuclear waste water processing system - Google Patents
A kind of nuclear waste water processing system Download PDFInfo
- Publication number
- CN110357292A CN110357292A CN201910779116.2A CN201910779116A CN110357292A CN 110357292 A CN110357292 A CN 110357292A CN 201910779116 A CN201910779116 A CN 201910779116A CN 110357292 A CN110357292 A CN 110357292A
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- Prior art keywords
- filter
- waste water
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- processing system
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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
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/006—Radioactive 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
- C02F2101/20—Heavy metals or heavy metal 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 nuclear waste water processing system, including sequentially connected initial stage filter device, mid-term filter device and later period filter device, the initial stage filter device include waste water tank and first filter, and the waste water tank is connect by elevator pump with the first filter；The mid-term filter device includes the second filter, level-one more medium filter and cartridge filter, and second filter is respectively communicated with the first filter and level-one more medium filter, and the level-one more medium filter is connect with the cartridge filter；The later period filter device includes second level more medium filter and reverse osmosis membrane device, and the reverse osmosis membrane device is connect by high-pressure pump with the cartridge filter, and the reverse osmosis membrane device is connect with the second level more medium filter.The present invention proposes a kind of nuclear waste water processing system, reaches the silt, iron rust or other large granular impurities effectively removed in nuclear radiation waste water, and the radioactive element in efficient absorption nuclear radiation waste water obtains the effect of "dead" water purification.
Description
Technical field
The present invention relates to technical field of waste water processing more particularly to a kind of nuclear waste water processing systems.
Background technique
China's radioactive wastewater is divided into high, medium and low and low-activity waste water by radioactive activity height, and wastewater source includes
The waste water that nuclear power station waste water, uranium ore select smelting waste water, the spentnuclear fuel post-processing units such as waste water and hospital, scientific research to generate.Uranium ore choosing
The nucleic that the waste water that smelting generates mainly contains includes U, Ra and micro Po and Pb210, belongs to low-activity waste water.Nuclear power station
Waste water mainly includes that main equipment and ancillary equipment emptied of water, reactor discharge water, second servo loop waste water, cleaning waste liquid, ion are handed over
Changing device regenerative wastewater and personal cleansing water etc., predominantly middle low-activity waste water, above-mentioned nuclear waste water radioactive concentration is all very high,
Risk is very big.
The processing method of nuclear waste water mainly has ion-exchange and evaporation concentration method at present.
Ion-exchange: many radionuclides are in ionic condition in water, and especially by chemical precipitation, treated
Radioactive wastewater, due to eliminating suspension and colloid radionuclide, remaining is almost in the nucleic of ionic condition,
In it is most of be cation.And radionuclide is micro existing in water, thus is well suited for ion-exchange treatment, and
In the case where no on-radiation ion interference, ion exchange can effectively work for a long time.Most of cation exchange trees
Rouge has high removal ability and big exchange capacity to radiostrontium；Phenol aldehyde type positive resin can effectively remove radioactive cesium, macropore
Type positive resin can not only remove radioactive cation, moreover it is possible to pass through Adsorption existing zirconium, niobium, cobalt and with network in colloidal form
Ruthenium existing for solvate form etc..But there are a more fatal weakness for the method, when radionuclide in waste liquid or on-radiation
When ion concentration is higher, the resin that resin bed can penetrate quickly and fail, and usually handle radioactive wastewater is without regeneration
Processing, so once failure should be replaced immediately.
Evaporation concentration method: sending radioactive wastewater into vaporising device, while importing heating steam for water evaporation into vapor,
And radionuclide then stays in water.The condensed water discharge or reuse formed in evaporation process, then further progress is solid for concentrate
Change processing.Evaporation concentration method is not suitable for waste water of the processing containing volatile nuclide and foam easy to foaming；Thermal energy consumption is big, operating cost
It is higher；The potential threats such as corrosion and scaling, explosion are also contemplated that in design and operation simultaneously.
Summary of the invention
It is an object of the invention to propose a kind of nuclear waste water processing system, reach effective for the defects of background technique
Remove silt, iron rust or other large granular impurities in nuclear radiation waste water, the radioactive element in efficient absorption nuclear radiation waste water,
Obtain the effect of "dead" water purification.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of nuclear waste water processing system, including sequentially connected initial stage filter device, mid-term filter device and later period filtering
Device, the initial stage filter device include waste water tank and first filter, and the waste water tank passes through elevator pump and first mistake
Filter connection；The mid-term filter device include the second filter, level-one more medium filter and cartridge filter, described second
Filter is respectively communicated with the first filter and level-one more medium filter, the level-one more medium filter and the security personnel
Filter connection；The later period filter device includes second level more medium filter and reverse osmosis membrane device, and the reverse osmosis membrane device is logical
It crosses high-pressure pump to connect with the cartridge filter, the reverse osmosis membrane device is connect with the second level more medium filter.
Preferably, the filter medium of the level-one more medium filter is zeolite.
Preferably, the first filter is active carbon filter, and filter medium is active carbon.
Preferably, the filter medium of the second level more medium filter is zeolite and active carbon.
Preferably, the filter medium of the cartridge filter includes but is not limited to pp cotton and strainer.
Preferably, the second level more medium filter and the second filter unilaterally connected, communication direction are described two
Grade more medium filter is to second filter.
Preferably, the second level more medium filter is connect by draining pump with the waste water tank.
Preferably, second filter, level-one more medium filter and cartridge filter pass through respectively branch pipe with it is described
Draining pump connection.
Preferably, the first filter includes but is not limited to membrane filter and laminated filter.
Preferably, the reverse osmosis membrane device is also connected with clear water tanks.
The utility model has the advantages that the present invention uses absorption+membrane separation process combined type treatment process, filtered using laminated filter special
Property, silt, iron rust or other large granular impurities in nuclear radiation waste water are effectively removed, subsequent processing units component is protected；So
More medium filter afterwards, can radioactive element in efficient absorption nuclear radiation waste water；Then, waste water is divided by film separation system
The radioactivity heavy metal element in waste water is separated out, "dead" water purification is obtained.UF membrane concentrated water enters second level multimedium absorber
Circulatory system circular treatment.Entire process flow is rationally suitable for industrialization, and process performance is efficient, and removal effect is obvious.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of nuclear waste water processing system of the invention.
Wherein: waste water tank 1, first filter 3, the second filter 4, level-one more medium filter 5, was ensured public security at elevator pump 2
Filter 6, high-pressure pump 7, second level more medium filter 8, reverse osmosis membrane device 9, clear water tanks 10, draining pump 11.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
A kind of nuclear waste water processing system of the present embodiment, including initial stage filter device, mid-term filter device and later period filtering
Device, the initial stage filter device include waste water tank 1 and first filter 3, and the mid-term filter device includes the second filter
4, level-one more medium filter 5 and cartridge filter 6；The later period filter device includes second level more medium filter 8 and reverse osmosis
Permeable membrane device 9；
The waste water tank 1 is connect by elevator pump 2 with the first filter 3；Second filter 4 is respectively communicated with institute
First filter 3 and level-one more medium filter 5 are stated, the level-one more medium filter 5 is connect with the cartridge filter 6；
The reverse osmosis membrane device 9 is connect by high-pressure pump 7 with the cartridge filter 6, and the reverse osmosis membrane device 9 is situated between more with the second level
Mass filter 8 connects, and the second level more medium filter 8 and 4 unilaterally connected of the second filter, communication direction is described two
Grade more medium filter 8 arrives second filter 4, and the second level more medium filter 8 passes through draining pump 11 and the waste water
Case 1 connects, and second filter 4, level-one more medium filter 5 and cartridge filter 6 pass through branch pipe and the draining respectively
11 connection of pump.
In the present embodiment, waste water tank 1 is stored with a large amount of nuclear waste waters, will be in the waste water tank 1 by the elevator pump 2
Nuclear waste water is pumped to the first filter 3, and in the present embodiment, the first filter 3 is using membrane filter or folds
The filter device in the prior art such as piece filter, nuclear waste water are filtered by the first filter 3, then flow to described the again
Tow filtrator 4, the main function of the first filter 3 are that filter out the bulky grains such as the silt adulterated in nuclear waste water, iron rust miscellaneous
Matter, the nuclear waste water for filtering out large granular impurity pass through the second filter 4, and the filter medium of second filter 4 is using work
Property charcoal, 4 internal structure of the second filter is divided into upper layer and lower layer, and first layer is provided with granular active carbon, second layer setting
There is powdered active carbon, it is miscellaneous that first layer granular active carbon main filtration falls the bulky grain not filtered completely in first filter 3
Matter, the second layer is powdered for filtering out the impurity to suspend in nuclear waste water, flow to by the filtered nuclear waste water of two layers of active carbon
Level-one more medium filter 5, the filtrate being mainly arranged in the level-one more medium filter 5 are zeolite, and zeolite interior has
There is crystal structure, these crystal structures form many cavitys, and there are many hydrones in these cavitys, when encountering high temperature
It can be discharged, but the crystal structure of zeolite interior can't be destroyed, the zeolite after emptying hydrone can adsorb in nuclear waste water
Pollutant need to level-one while in order to which the hydrone for allowing zeolite that can empty internal crystal structure reuptakes pollutant
Nuclear waste water in more medium filter 5 is heated, therefore is internally provided with heating rod in the level-one more medium filter 5,
The heating rod is plug-in heating rod.
After the filtering of the level-one more medium filter 5, nuclear waste water flow to the cartridge filter 6, the guarantor
The filter medium for pacifying filter 6 is mainly PP cotton and strainer, for filtering out in the first filter 3 and level-one multimedium mistake
Then the active carbon powder and zeolite powder brought out in filter 5 takes using the pressure of the high-pressure pump 7, comes the reverse osmosis
Permeable membrane device 9, reverse osmosis technology centering low concentration Spent Radioactive water process has the function of concentration and deep purifying, low dense in
The radioactive wastewater of degree, using 2 grades of reverse osmosis purifications, and due to no radiation-resistant extraordinary membrane component, it is therefore desirable to regular
Reverse osmosis membrane is replaced, reverse osmosis membrane device 9 used in the present embodiment is the prior art, but since reverse osmosis membrane device 9 is tubular article, because
This offers gate at the top of the tubular article, is easy to open the reverse osmosis membrane that the gate can take out and more renew.
Final standard compliant pure water is obtained after the filtering of reverse osmosis membrane device 9, is drained into the clear water tanks 10,
Can be by the second level more medium filter 8 for the remaining waste water after the reverse osmosis membrane device 9 filtering, the second level is more
The filter medium of medium filter 8 is active carbon and zeolite, is thoroughly carried out to impurity present in nuclear waste water using the mixture
Filtering.
Remaining waste water filtered for the second level more medium filter 8 is drained into described useless by the draining pump 11
Water tank 1 connects likewise, second filter 4, level-one more medium filter 5 and cartridge filter 6 equally separate a plurality of branch pipe
The draining pump 11 is passed to, filtered discharge of wastewater to the waste water tank 1 is handled by secondary cycle, realizes maximum journey
On degree by purification of waste water.
In the present embodiment, transport wastewater passes through pipeline transportation to each filter device, and pipeline is by resistant material system
It forms, prevents pipeline breaking in transit, waste water is caused to be revealed.
In the present invention, automation start and stop of each filter device etc., PLC control can be also controlled by PLC control system
System processed is no difference with the prior art.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (10)
1. a kind of nuclear waste water processing system, it is characterised in that: including sequentially connected initial stage filter device, mid-term filter device and
Later period filter device, the initial stage filter device include waste water tank and first filter, and the waste water tank passes through elevator pump and institute
State first filter connection；The mid-term filter device includes the second filter, level-one more medium filter and cartridge filter,
Second filter is respectively communicated with the first filter and level-one more medium filter, the level-one more medium filter with
The cartridge filter connection；The later period filter device includes second level more medium filter and reverse osmosis membrane device, the reverse osmosis
Permeable membrane device is connect by high-pressure pump with the cartridge filter, and the reverse osmosis membrane device and the second level more medium filter connect
It connects.
2. a kind of nuclear waste water processing system according to claim 1, it is characterised in that:
The filter medium of the level-one more medium filter is zeolite.
3. a kind of nuclear waste water processing system according to claim 1, it is characterised in that:
Second filter is active carbon filter, and filter medium is active carbon.
4. a kind of nuclear waste water processing system according to claim 1, it is characterised in that:
The filter medium of the second level more medium filter is zeolite and active carbon.
5. a kind of nuclear waste water processing system according to claim 1, it is characterised in that:
The filter medium of the cartridge filter includes but is not limited to pp cotton and strainer.
6. a kind of nuclear waste water processing system according to claim 1, it is characterised in that:
The second level more medium filter and the second filter unilaterally connected, communication direction are the second level multi-medium filtering
Device is to second filter.
7. a kind of nuclear waste water processing system according to claim 1, it is characterised in that:
The second level more medium filter is connect by draining pump with the waste water tank.
8. a kind of nuclear waste water processing system according to claim 7, it is characterised in that:
Second filter, level-one more medium filter and cartridge filter pass through branch pipe respectively and connect with the draining pump.
9. a kind of nuclear waste water processing system according to claim 1, it is characterised in that:
The first filter includes but is not limited to membrane filter and laminated filter.
10. a kind of nuclear waste water processing system according to claim 1, it is characterised in that:
The reverse osmosis membrane device is also connected with clear water tanks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910779116.2A CN110357292A (en) | 2019-08-22 | 2019-08-22 | A kind of nuclear waste water processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910779116.2A CN110357292A (en) | 2019-08-22 | 2019-08-22 | A kind of nuclear waste water processing system |
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| CN110357292A true CN110357292A (en) | 2019-10-22 |
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| CN201910779116.2A Pending CN110357292A (en) | 2019-08-22 | 2019-08-22 | A kind of nuclear waste water processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975373A (en) * | 2019-12-12 | 2020-04-10 | 丹阳市恒雅光学眼镜设备有限公司 | Candle type clarifying filter and method for treating sewage by using same |
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2019
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Cited By (1)
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| CN110975373A (en) * | 2019-12-12 | 2020-04-10 | 丹阳市恒雅光学眼镜设备有限公司 | Candle type clarifying filter and method for treating sewage by using same |
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