For handling Spent Radioactive water purifying means
Technical field
The present invention relates to field of waste water treatment, more particularly to one kind for handling Spent Radioactive water purifying means.
Background technique
Ultrafiltration is a kind of technology of UF membrane, and ultrafiltration membrane is component important in ultrafiltration technology, ultrafiltration membrane be porosity not
Symmetrical structure.The mode that traditional ultrafiltration technology mostly uses full dose to filter, i.e., using both sides differential pressure of membrane as driving force, in the work of pressure
Under, water penetrates ultrafiltration membrane and the macromolecular substances such as protein, colloid are then retained down.Above-mentioned filter type has driving force
The features such as small, simple process, easily operated and maintenance.
In recent years, hyperfiltration technique is widely used in radioactive wastewater field of purification, but due to the spy of radioactive wastewater
Different property restricts hyperfiltration technique in the development of radioactive wastewater field of purification.Specifically, containing a large amount of in radioactive wastewater
Colloidal attitude nucleic, during traditional full dose filtering, colloidal attitude nucleic is easily adsorbed to the surface of ultrafiltration membrane, blocks ultrafiltration
The fenestra of film causes pollution of the ultrafiltration membrane by organic matter, and then shortens the service life of ultrafiltration membrane.Furthermore the film of ultrafiltration membrane
Yi Dan be blocked, water purification efficiency is greatly reduced in hole.
Summary of the invention
Based on this, it is necessary to which aiming at the problem that radioactive wastewater easily blocks traditional ultrafiltration membrane, providing one kind be can be improved only
Water efficiency is used to handle Spent Radioactive water purifying means.
One kind is for handling Spent Radioactive water purifying means comprising:
Cross flow membrane filter, the cross flow membrane filter include filtering chamber and are installed on the indoor filter of the filter chamber
Film, the filtering chamber have water inlet end, concentrated water water outlet and water purification water outlet, and the water inlet end of the filtering chamber is located at institute
State the influent side of filter membrane, the concentrated water water outlet of the filtering chamber is located at the influent side of the filter membrane, the filtering chamber it is net
Water water outlet is located at the water outlet side of the filter membrane;
First feed pipe, first feed pipe are used for transmission radioactive wastewater, the water outlet of first feed pipe with
The water inlet end of the filtering chamber is connected to;
Pure water pipe, the pure water pipe are used for transmission the water after the membrane filtration, the water inlet end of the pure water pipe and institute
State the water purification water outlet connection of filtering chamber;And
Concentrated water pipe, the concentrated water pipe for being discharged the water through the membrane retention, the water inlet end of the concentrated water pipe with it is described
The concentrated water water outlet of filtering chamber is connected to, and the concentrated water pipe is equipped with Water flow adjusting valve
The above-mentioned structure for handling Spent Radioactive water purifying means is simple, and the water purification effect of radioactive wastewater can be improved
Rate.Specifically, the radioactive wastewater transmitted in the first feed pipe carries out cross-flow filtration in cross flow membrane filter, met
The concentrated water that the water purification of radioactive wastewater processing requirement and membrane retention get off, in order to prevent containing a large amount of colloidal attitude nucleic
Concentrated water is adsorbed in the surface of filter membrane and leads to Pore Blocking, and Water flow adjusting valve is arranged on concentrated water pipe, can be by regulating and controlling water flow
The reasonable diffluence of aperture control the concentrated water pipe and the water flow in pure water pipe of adjustable valve, makes concentrated water be discharged into concentrated water pipe as early as possible, subtracts
It is few because the colloidal attitude nucleic in concentrated water is the problem of the accumulation on filter membrane surface leads to the Pore Blocking of filter membrane, and then improve filter
The water purification efficiency of film and the service life of filter membrane.
First feed pipe is equipped with the first water ga(u)ge in one of the embodiments, and the pure water pipe is equipped with
Second water ga(u)ge.
The filter membrane is ultrafiltration membrane in one of the embodiments, and the aperture of the ultrafiltration membrane is 0.03 μm -0.05 μm.
It further include in one of the embodiments, feed-tank for handling Spent Radioactive water purifying means, the water supply
Case is for storing radioactive wastewater, and the water inlet end of the feed-tank is connected to the water outlet of the concentrated water pipe, the feed-tank
Water outlet is connected to the water inlet end of first feed pipe.
Liquid level sensor for sensed water level variation, institute are installed on the feed-tank in one of the embodiments,
It states and is equipped with the first valve close to the feed-tank side on the first feed pipe.
It further include in one of the embodiments, clear water tanks for handling Spent Radioactive water purifying means, the water purification
Case is for collecting the water after the membrane filtration of the cross flow membrane filter, the water inlet end of the clear water tanks and the pure water pipe
Water outlet connection.
It further include in one of the embodiments, cartridge filter and for handling Spent Radioactive water purifying means
Two feed pipes, the water inlet end of the cartridge filter are connected to the water outlet of first feed pipe, the cartridge filter
Water outlet is connected to the water inlet end of second feed pipe, the water outlet of second feed pipe and the water inlet of the filtering chamber
End connection.
In one of the embodiments, for handling Spent Radioactive water purifying means further include:
The water inlet end of first cleaning pipe, first cleaning pipe is connected to the clear water tanks, and first cleaning pipe goes out
Water end (W.E.) is connected to first feed pipe, and first cleaning pipe is equipped with the second valve, the water outlet of first cleaning pipe
Between first valve and the cartridge filter;
Second cleaning pipe, the water inlet end of second cleaning pipe are connected to second feed pipe, second cleaning pipe
Water outlet be connected to the pure water pipe, on second feed pipe close to the cross flow membrane filter water inlet end side be equipped with third
Valve, the water inlet end of second cleaning pipe is between the cartridge filter and the third valve, on the pure water pipe
It is equipped with the 4th valve close to the water inlet end side of the clear water tanks, the water outlet of second cleaning pipe is located at the crossflow membrane filtration
Between device and the 4th valve.
The Water flow adjusting valve is solenoid valve in one of the embodiments,.
It further include in one of the embodiments, Programmable logical controller for handling Spent Radioactive water purifying means
Device, the programmable logic controller (PLC) are electrically connected with the Water flow adjusting valve.
Detailed description of the invention
Fig. 1 is in an embodiment for handling the front view of Spent Radioactive water purifying means;
Fig. 2 is in another embodiment for handling the front view of Spent Radioactive water purifying means.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited by the specific embodiments disclosed below.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Refering to fig. 1, it is provided in one embodiment of the invention a kind of for handling Spent Radioactive water purifying means comprising:
Cross flow membrane filter 100, the first feed pipe 110, pure water pipe 310 and concentrated water pipe 510.
Wherein, the cross flow membrane filter 100 includes filtering chamber 101 and the filter being installed in the filtering chamber 101
Film 102, the filtering chamber 101 have water inlet end, concentrated water water outlet and water purification water outlet, the filtering chamber 101 into
Water end (W.E.) and the concentrated water water outlet are located at the influent side of the filter membrane 102, i.e., the water inlet end of the described filtering chamber 101, the mistake
The concentrated water water outlet of filter chamber room 101 is located at the ipsilateral of the filter membrane 102 and is located at different location.The filtering chamber 101 it is net
Water water outlet is located at the water outlet side of the filter membrane 102, i.e., the side of water inlet end or concentrated water water outlet far from filtering chamber 101.
The filter membrane 102 is ultrafiltration membrane in one of the embodiments, and the aperture of ultrafiltration membrane is 0.03 μm -0.05 μm.This
Pore diameter range size is suitable, can pass through to avoid reflexive colloidal attitude nucleic, pollute to filtered water.
Of the invention is used to handle the cross-flow filtration that Spent Radioactive water purifying means mainly utilize cross flow membrane filter 100
Principle, by built-in motor driving make waste water to be filtered filter membrane 102 surface carry out high speed rotation, in 102 table of filter membrane
Face generates biggish shearing force, and the water of the nucleic containing colloidal attitude of 102 surface of filter membrane retention is brought to dense under the action of shear force
The discharge of water water outlet avoids the fenestra of colloidal attitude nucleic blocking filter membrane 102.
Wherein, 110 main function of the first feed pipe is to transmit Spent Radioactive into the cross flow membrane filter 100
Water, the water outlet of first feed pipe 110 are connected to the water inlet end of the filtering chamber 101.
Wherein, 310 main function of pure water pipe is transmitted after the membrane filtration of the cross flow membrane filter 100
Water, in the present invention, the water after the membrane filtration of the cross flow membrane filter 100 are also referred to as water purification.The pure water pipe 310 into
Water end (W.E.) is connected to the water purification water outlet of the filtering chamber 101.
Wherein, 510 main function of concentrated water pipe is that the filter membrane 102 through the cross flow membrane filter 100 is discharged to retain
Water, in the present invention, the water that the filter membrane 102 through the cross flow membrane filter 100 retains are also referred to as concentrated water.The concentrated water pipe 510
Water inlet end be connected to the concentrated water water outlet of the filtering chamber 101, the concentrated water pipe 510 be equipped with Water flow adjusting valve 513,
By regulating and controlling the aperture of Water flow adjusting valve 513 to improve the water flow for entering concentrated water pipe, the water flow in pure water pipe 310 is reduced
Amount, and then it is discharged into concentrated water as early as possible in concentrated water pipe 510, the colloidal attitude nucleic in concentrated water is reduced in the filter of cross flow membrane filter 100
Accumulation on film 102 improves the water purification efficiency and service life of filter membrane 102.
First feed pipe 110 is equipped with the first water ga(u)ge 111, the pure water pipe in one of the embodiments,
310 are equipped with the second water ga(u)ge 311.Wherein, the first water ga(u)ge 111 is mainly for detection of the water in the first feed pipe 110
Flow A, the second water ga(u)ge 311 are used to detect water flow B in pure water pipe 310, the difference of the two again with the first feed pipe 110
The percentage of interior water flow A is Net water recoveries, and calculation formula is as follows:
In actual operation, operator returns water purification by adjusting the aperture of the Water flow adjusting valve 513 on concentrated water pipe 510
Yield reaches 30%-40%, guarantees rationally dividing for the water flow of concentrated water pipe 510 and water purification and concentrated water in pure water pipe 310
Stream, such benefit is can both to have reduced fenestra caused by surface of the organic matters such as colloidal attitude nucleic because being attached to filter membrane 102
Blocking, and water purification efficiency can be improved to generate more water purifications in guarantor unit's time.
The Water flow adjusting valve 513 is solenoid valve in one of the embodiments,.Further, for handling radiation
Property useless water purifying means further include programmable logic controller (PLC), the programmable logic controller (PLC) is electrically connected with the solenoid valve
It connects, the aperture for automatically controlling solenoid valve may be implemented in this way, and then Net water recoveries is made to be maintained at 30%-40%, reduce
The inaccuracy manually adjusted.
It further include in one of the embodiments, feed-tank 300 for handling Spent Radioactive water purifying means, it is described to give
The water outlet of water tank 300 is connected to the water inlet end of first feed pipe 110, the water inlet end of the feed-tank 300 with it is described dense
The water outlet of water pipe 510 is connected to, and there are two the effects of the feed-tank 300, one is for storing radioactive wastewater, by the
One feed pipe 110 is that the cross flow membrane filter 100 provides waste water to be processed;The second is by by the concentrated water pipe 510 with
Feed-tank 300 is connected to, to recycle concentrated water, prevents radioactive colloidal attitude nucleic in concentrated water from causing to leak because discharge is improper,
Nuclear pollution is caused, and concentrated water is discharged into again in the feed-tank 300, colloidal attitude nucleic is constantly enriched with, and can be deposited on described
The bottom of feed-tank 300 avoids colloidal attitude nucleic from leaking convenient for subsequent unified collection.
It further include in one of the embodiments, clear water tanks 500 for handling Spent Radioactive water purifying means, it is described net
The water inlet end of water tank 500 is connected to the water outlet of the pure water pipe 310, and the clear water tanks 500 are mainly used for collecting through the mistake
Flow the filtered water purification of filter membrane 102 of membrane filter 100.
Liquid level sensor for sensed water level variation is installed on the feed-tank 300 in one of the embodiments,
120, the first valve 113 is equipped with close to 300 side of feed-tank on first feed pipe 110.Specifically, working as level sensing
When device 120 detects that the water level in feed-tank 300 reaches high threshold, the first valve 113 is opened, is started for handling Spent Radioactive
Water purifying means carry out water purification work.
In one of the embodiments, for handle Spent Radioactive water purifying means further include cartridge filter 130 with
And second feed pipe 710, the water inlet end of the cartridge filter 130 is connected to the water outlet of first feed pipe 110, described
The water outlet of cartridge filter 130 is connected to the water inlet end of second feed pipe 710, the water outlet of second feed pipe 710
End is connected to the water inlet end of the filtering chamber 101.Wherein, cartridge filter 130 mainly carries out radioactive wastewater preliminary
Filtering removes large granular impurity, reduces the filter pressure of cross flow membrane filter 100.
Referring to Fig.2, wrapped in one of the embodiments, in conjunction with Fig. 1 and also for handling Spent Radioactive water purifying means
The backwashing mechanism of the filter membrane 102 for reverse cleaning cross flow membrane filter 100 is included, thus realize the cleaning of filter membrane and pipeline, it should
Backwashing mechanism includes the first cleaning pipe 810 and the second cleaning pipe 910.
In the present embodiment, the water inlet end of first cleaning pipe 810 is connected to the clear water tanks 500, and described first is clear
The water outlet for washing pipe 810 is connected to first feed pipe 110, and first cleaning pipe 810 is equipped with the second valve 813, institute
The water outlet of the first cleaning pipe 810 is stated between first valve 113 and the cartridge filter 130.By described first
The benefit that the water inlet end of cleaning pipe 810 is connected to the clear water tanks 500 be available with the complete twin conduit of least a portion of water purification and
The cleaning of filter avoids introducing new water and causes to damage to the interior environment of pipeline and filter.
In the present embodiment, the water inlet end of second cleaning pipe 910 is connected to second feed pipe 710, and described
The water outlet of two cleaning pipes 910 is connected to the pure water pipe 310, and the crossflow membrane filtration is located on second feed pipe 710
Device 100 intakes end side equipped with third valve 713, and the water inlet end of second cleaning pipe is located at the cartridge filter 130 and institute
It states between third valve 713, is equipped with the 4th valve 313 positioned at the water inlet end side of the clear water tanks 500 on the pure water pipe 310,
The water outlet of second cleaning pipe 710 is between the cross flow membrane filter 100 and the 4th valve 313.
Further, first valve 113, second valve 813, the third valve 713 and the 4th valve
Door 313 is electromagnetic valve, and is electrically connected with programmable logic controller (PLC), that is to say, that programmable logic controller can be with
Control the aperture of each valve.
The above-mentioned structure for handling Spent Radioactive water purifying means is simple, and the water purification effect of radioactive wastewater can be improved
Rate.Specifically, the radioactive wastewater transmitted in the first feed pipe carries out cross-flow filtration in cross flow membrane filter, met
The concentrated water that the water purification of radioactive wastewater processing requirement and membrane retention get off, in order to prevent containing a large amount of colloidal attitude nucleic
Concentrated water is adsorbed in the surface of filter membrane and leads to Pore Blocking, and Water flow adjusting valve is arranged on concentrated water pipe, can be by regulating and controlling water flow
The reasonable diffluence of aperture control the concentrated water pipe and the water flow in pure water pipe of adjustable valve, makes concentrated water be discharged into concentrated water pipe as early as possible, subtracts
It is few because the colloidal attitude nucleic in concentrated water is the problem of the accumulation on filter membrane surface leads to the Pore Blocking of filter membrane, and then improve filter
The water purification efficiency of film and the service life of filter membrane.
In order to which objects and advantages of the present invention are more clearly understood, the present invention is carried out with reference to embodiments further
It is described in detail.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not intended to limit the present invention.
Embodiment 1
The process of water purification is carried out using purifier of the invention:
Refering to fig. 1, when liquid level sensor 120 detects that the water level in feed-tank 300 reaches high threshold, liquid level sensor
120 issue electric signal to programmable logic controller (PLC), and programmable logic controller (PLC) is by the first valve 113, the 4th valve 313, water
Flow control valve 513 is separately turned on, radioactive wastewater enter the first water inlet pipe 110, then followed by cartridge filter 130,
Second water inlet pipe 710 enters cross flow membrane filter 100, and the water purification that the filter membrane 102 through cross flow membrane filter 100 filters passes through water purification
Pipe 310 flows into clear water tanks 500, and passes back into water supply through concentrated water pipe 510 by the concentrated water of nucleic containing colloidal attitude that filter membrane 102 is retained down
In case 300.In water purification process, the aperture of PLC controls Water flow adjusting valve 513 reaches Net water recoveries
To 35%, to realize the reasonable diffluence of pure water pipe 310 and concentrated water pipe 510.
Embodiment 2
Utilize the backwashing mechanism detergent line of purifier of the invention and the process of filter membrane:
Referring to Fig.2, when needing to start cleaning procedure, programmable logic controller (PLC) is by the first valve 113, third valve
713 and the 4th valve 313 close, and the second valve 813, Water flow adjusting valve 513 are opened.Water purification in clear water tanks 500 according to
It is secondary flow through the first cleaning pipe 810, the first feed pipe 110, cartridge filter 130, the second feed pipe 710, the second cleaning pipe 910,
It after cross flow membrane filter 100, into concentrated water pipe 510, is finally back in feed-tank 300, completes to cartridge filter 130, mistake
Flow the back flush of the filter membrane 102 in membrane filter 100.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.