A kind of ultrafiltration system and its operating method
Technical field
The present invention relates to hyperfiltration technique field more particularly to a kind of ultrafiltration system and its operating methods.
Background technique
Ultrafiltration is using pressure as one of membrane separation technique of motive force, and the purpose is to separate macromolecular and small molecule, filter membrane
Aperture generally between 20-1000A °.In ultra-filtration process, aqueous solution, through filter membrane surface, is less than fenestra under pressure promotion
Solvent and small molecule solute penetrate filter membrane, become scavenging solution (cleaner liquid), the solute bigger than fenestra and solute group are then
It is trapped, is discharged with water flow, become concentrate.Ultra-filtration process is dynamic filtration, and separation is completed under flow regime, solute
Only in the limited deposition of filter membrane surface, ultrafiltration rate decaying tends to balance to a certain extent, and can be restored by cleaning.
Currently, ultrafiltration system can be done the material filtering in hyperfiltration membrane assembly by the way of water liftout after completing ultrafiltration
Only, to realize making full use of for material.But since ultrafiltration is using the pressure of solution as motive force, thus, in water liftout
In the process, the size of water directly affects the filter effect of material and the quality of scavenging solution:
1, water is as large as possible, then the effect of material filtering is best, utilization rate highest, but will also result in simultaneously a large amount of
Water enters in scavenging solution, it is made not meet manufacturing technique requirent, thereby reduces the quality of scavenging solution, reduces depositing for scavenging solution
Store up the time;
2, water is too small, then can avoid a large amount of water and enter in scavenging solution, ensure that the quality of scavenging solution, but can be significantly
Ground reduces the utilization rate of material, causes a large amount of material waste, increases environmentally friendly cost.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of ultrafiltration system and its operating method, which can
Under the premise of guaranteeing scavenging solution high-quality, the utilization rate of material is improved, avoids the waste of material, reduces environmentally friendly cost.
Based on this, the present invention provides a kind of ultrafiltration system, including original fluid container, discharging pump, hyperfiltration membrane assembly, Clear liquid tank with
And concentration flow container, the outlet of the original fluid container are connected by stoste pipeline with the import of the hyperfiltration membrane assembly, the discharging
Pump is set on the stoste pipeline, for pumping the material in the original fluid container to the hyperfiltration membrane assembly, the ultrafiltration
The purified liquor outlet of membrane module is connected by clear liquid pipeline with the import of the Clear liquid tank, and the concentrate of the hyperfiltration membrane assembly goes out
Mouth is connected by concentration liquid pipeline with the import of the concentration flow container;
The stoste pipeline is equipped with the first control valve, and the clear liquid pipeline is equipped with the second control valve and with described the
Collateral branch's pipeline of two control valves parallel connection, collateral branch's pipeline are equipped with third control valve, the 4th control valve and for vacuumizing
Self priming pump, the third control valve is connected with the import of the self priming pump, the 4th control valve and the self priming pump
Outlet is connected.
Preferably, primary is additionally provided on the stoste pipeline between the discharging pump and the hyperfiltration membrane assembly
Filter.
Preferably, the primary filter is set as multiple groups, and each primary filter is arranged in parallel.
Preferably, the filtering accuracy of the primary filter is 300 mesh.
Preferably, it is additionally provided on the stoste pipeline between the primary filter and the hyperfiltration membrane assembly
Heater.
Preferably, the heater is using hot water as heat transferring medium.
Preferably, the hyperfiltration membrane assembly is set as multiple groups, and each hyperfiltration membrane assembly is arranged in parallel.
Preferably, it is additionally provided on the clear liquid pipeline between second control valve and the hyperfiltration membrane assembly
Vacuum inspective meter.
Another object of the present invention is to provide a kind of operating methods of above-mentioned ultrafiltration system, include the following steps:
Step 1 opens the first control valve and the second control valve, closes third control valve and the 4th control valve, starting discharging
Pump, normal ultrafiltration process start;
Step 2 stops discharging pump, closes the first control valve and the second control valve, opens third control valve and the 4th control
Valve starts self priming pump, and ultra-filtration process continues, until the surplus material in hyperfiltration membrane assembly is clean by filtering;
Step 3, stops self priming pump, and entire ultra-filtration process terminates.
The implementation of the embodiments of the present invention has the following beneficial effects:
Ultrafiltration system provided by the invention includes original fluid container, discharging pump, hyperfiltration membrane assembly, Clear liquid tank and flow container is concentrated,
The outlet of original fluid container is connected by stoste pipeline with the import of hyperfiltration membrane assembly, and discharging pump is set on stoste pipeline, and being used for will
Material in original fluid container is pumped to hyperfiltration membrane assembly, the purified liquor outlet of hyperfiltration membrane assembly by clear liquid pipeline and Clear liquid tank into
Mouth is connected, and the concentrated solution outlet of hyperfiltration membrane assembly is connected by concentration liquid pipeline with the import that flow container is concentrated;Stoste pipeline
It is equipped with the first control valve, clear liquid pipeline is equipped with the second control valve and the collateral branch pipeline in parallel with the second control valve, collateral branch
Pipeline is equipped with third control valve, the 4th control valve and the self priming pump for vacuumizing, third control valve and self priming pump into
Mouth is connected, and the 4th control valve is connected with the outlet of self priming pump.Based on above structure, which passes through setting band self-priming
Collateral branch's pipeline of pump, realizing the ultra-filtration process after stopping feed may continue to the function of carrying out, and then can be by ultrafiltration membrane group
Remaining material filtering is clean in part and stoste pipeline, is finally reached and improves material utilization rate, avoid material waste, reduce ring
The purpose of guaranteed cost, also, the mode relative to previous water liftout, self priming pump, which vacuumizes the mode for generating negative pressure, does not have aqueous solution
Participation ensure that the high-quality of scavenging solution so as to avoid a large amount of water from entering in scavenging solution.
In addition, having simple and convenient, easy to implement etc. the present invention also provides a kind of operating method of above-mentioned ultrafiltration system
Advantage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the ultrafiltration system of the embodiment of the present invention.
Description of symbols:
1, original fluid container, 2, discharging pump, 3, hyperfiltration membrane assembly, 4, Clear liquid tank, 5, concentration flow container, 6, stoste pipeline, 7, clear liquid
Pipeline, 8, concentration liquid pipeline, the 9, first control valve, the 10, second control valve, 11, collateral branch's pipeline, 12, third control valve, 13, the
Four control valves, 14, self priming pump, 15, primary filter, 16, heater, 17, vacuum inspective meter.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of ultrafiltration system, it mainly include original fluid container 1, discharging pump 2, ultrafiltration membrane
Component 3, Clear liquid tank 4 and concentration flow container 5, the outlet of original fluid container 1 are connected by stoste pipeline 6 with the import of hyperfiltration membrane assembly 3
Logical, discharging pump 2 is set on stoste pipeline 6, for pumping the material in original fluid container 1 to hyperfiltration membrane assembly 3, hyperfiltration membrane assembly
3 purified liquor outlet is connected by clear liquid pipeline 7 with the import of Clear liquid tank 4, and the concentrated solution outlet of hyperfiltration membrane assembly 3 passes through concentration
Liquid pipeline 8 is connected with the import of concentration flow container 5;Stoste pipeline 6 is equipped with the first control valve 9, and clear liquid pipeline 7 is equipped with second
Control valve 10 and the collateral branch pipeline 11 in parallel with the second control valve 10, collateral branch's pipeline 11 are equipped with third control valve the 12, the 4th
Control valve 13 and self priming pump 14 for vacuumizing, third control valve 12 are connected with the import of self priming pump 14, the 4th control
Valve 13 is connected with the outlet of self priming pump 14.
Based on above structure, the workflow of the ultrafiltration system includes normal ultrafiltration process and surplus material ultrafiltration process:
The working principle of normal ultrafiltration process are as follows: the first control valve 9 and the second control valve 10 are opened, 12 He of third control valve
4th control valve 13 is closed, and discharging pump 2 is run, and self priming pump 14 stops;The power that material utilizes discharging pump 2 to provide, from original fluid container 1
Through stoste pipeline 6 enter hyperfiltration membrane assembly 3 in, at the same time, pressure caused by material sustainable supply be ultra-filtration process into
Row provides required pressure, thus, the material in original fluid container 1 can realize continuous filtering;The scavenging solution that hyperfiltration membrane assembly 3 generates
Then concentrated liquid pipeline 8 enters in concentration flow container 5 concentrate for entering in Clear liquid tank 4 through clear liquid pipeline 7, while generating.
The working principle of surplus material ultrafiltration process are as follows: the first control valve 9 and the second control valve 10 are closed, and discharging pump 2 stops
Only, at this point, hyperfiltration membrane assembly 3 and the pipeline communicated therewith form a confined space;Third control valve 12 and the 4th control
Valve 13 processed is opened, and above-mentioned confined space is evacuated by the operation of self priming pump 14, and the surplus material in stoste pipeline 6 can be to as a result,
Flowing in hyperfiltration membrane assembly 3, at the same time, vacuumize generation negative pressure be ultra-filtration process carry out provide required pressure, from
And the surplus material in hyperfiltration membrane assembly 3 can realize complete filtering;As normal ultrafiltration process, hyperfiltration membrane assembly 3 is generated
The scavenging solution concentrate that enters in Clear liquid tank 4 through clear liquid pipeline 7 and collateral branch's pipeline 11, while generating then concentrated liquid pipeline
8 enter in concentration flow container 5.
By structure and the workflow of above-mentioned ultrafiltration system it is found that ultrafiltration system provided in an embodiment of the present invention passes through setting
Collateral branch's pipeline 11 with self priming pump 14, realizing the ultra-filtration process after stopping feed may continue to the function of carrying out, and then can
Remaining material filtering in hyperfiltration membrane assembly 3 and stoste pipeline 6 is clean, it is finally reached and improves material utilization rate, avoids object
Material waste, the purpose for reducing environmentally friendly cost, also, the mode relative to previous water liftout, self priming pump 14 vacuumize generation negative pressure
Mode there is no the participation of aqueous solution, so as to avoid a large amount of water from entering in scavenging solution, ensure that the high-quality of scavenging solution.
Further, as shown in Figure 1, the stoste pipeline 6 between discharging pump 2 and hyperfiltration membrane assembly 3 is equipped with primary filter
Device 15, filtering accuracy preferably 300 mesh.Use is additionally provided on stoste pipeline 6 between primary filter 15 and hyperfiltration membrane assembly 3
Heater 16 of the hot water as heat transferring medium, to improve the filter effect of material.In addition, according to actual material characteristic, self-priming
The frequency of pump 14 can adjust in real time, to adjust the speed vacuumized, for this purpose, between the second control valve 10 and hyperfiltration membrane assembly 3
Clear liquid pipeline 7 be equipped with vacuum inspective meter 17, thus, operator can first pass through vacuum inspective meter 17 observe ultrafiltration membrane
Pressure condition in component 3, then the frequency of self priming pump 14 is adjusted, to obtain optimal ultrafiltration effect.
Preferably, as shown in Figure 1, according to the limitation of actual work requirements or working environment, primary filter 15 can be set
For multiple groups, and each primary filter 15 is arranged in parallel.Likewise, hyperfiltration membrane assembly 3 can also be set as multiple groups, each hyperfiltration membrane assembly 3
It is arranged in parallel.In the present embodiment, primary filter 15 and hyperfiltration membrane assembly 3 are set as two groups.
The embodiment of the present invention also provides a kind of operating method of above-mentioned ultrafiltration system, specifically comprises the following steps:
Step 1 opens the first control valve 9 and the second control valve 10, closes third control valve 12 and the 4th control valve 13,
Start discharging pump 2, normal ultrafiltration process starts: material enters in hyperfiltration membrane assembly 3 from original fluid container 1 through stoste pipeline 6, ultrafiltration membrane
The scavenging solution that component 3 generates enters in Clear liquid tank 4 through clear liquid pipeline 7, while then concentrated liquid pipeline 8 enters the concentrate generated
It is concentrated in flow container 5;
Step 2 stops discharging pump 2, closes the first control valve 9 and the second control valve 10, opens third control valve 12 and the
Four control valves 13 start self priming pump 14, and surplus material ultrafiltration process starts: hyperfiltration membrane assembly 3 and the pipeline quilt communicated therewith
Self priming pump 14 is evacuated, and the surplus material in stoste pipeline 6 flows into hyperfiltration membrane assembly 3, the purification that hyperfiltration membrane assembly 3 generates
Liquid enters in Clear liquid tank 4 through clear liquid pipeline 7, while then concentrated liquid pipeline 8 enters in concentration flow container 5 concentrate generated, directly
Surplus material in hyperfiltration membrane assembly 3 is clean by filtering;
Step 3, stops self priming pump 14, and entire ultra-filtration process terminates.
To sum up, the present invention provides a kind of ultrafiltration system, by the way that collateral branch's pipeline 11 with self priming pump 14 is arranged, realizes and is stopping
Ultra-filtration process may continue to the function of carrying out after being only fed, and then can will be remaining in hyperfiltration membrane assembly 3 and stoste pipeline 6
Material filtering is clean, is finally reached the purpose for improving material utilization rate, avoiding material waste, reducing environmentally friendly cost, also, opposite
In the mode of previous water liftout, self priming pump 14, which vacuumizes the mode for generating negative pressure, does not have the participation of aqueous solution, so as to avoid
A large amount of water enters in scavenging solution, ensure that the high-quality of scavenging solution.
In addition, having simple and convenient, easy to implement etc. the present invention also provides a kind of operating method of above-mentioned ultrafiltration system
Advantage.
It should be understood that various information are described in the present invention using term " first ", " second " etc., but these information
It should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from the present invention
In the case where range, " first " information can also be referred to as " second " information, and similar, " second " information can also be referred to as
" first " information.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principle of the present invention, several improvement and deformations can also be made, these improvement and deformations are also considered as
Protection scope of the present invention.