CN114044586A - Method for controlling a clean-up ultrafiltration subsystem and related product - Google Patents
Method for controlling a clean-up ultrafiltration subsystem and related product Download PDFInfo
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- CN114044586A CN114044586A CN202111315922.8A CN202111315922A CN114044586A CN 114044586 A CN114044586 A CN 114044586A CN 202111315922 A CN202111315922 A CN 202111315922A CN 114044586 A CN114044586 A CN 114044586A
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- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 271
- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 160
- 238000005189 flocculation Methods 0.000 claims abstract description 114
- 230000016615 flocculation Effects 0.000 claims abstract description 114
- 238000001556 precipitation Methods 0.000 claims abstract description 77
- 238000000746 purification Methods 0.000 claims abstract description 76
- 230000003993 interaction Effects 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims abstract description 26
- 239000012528 membrane Substances 0.000 claims description 56
- 238000004519 manufacturing process Methods 0.000 claims description 44
- 238000011010 flushing procedure Methods 0.000 claims description 26
- 238000005406 washing Methods 0.000 claims description 17
- 238000004062 sedimentation Methods 0.000 claims description 15
- 238000012546 transfer Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 239000008213 purified water Substances 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 abstract description 15
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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
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
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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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- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention provides a method for controlling a purification ultrafiltration subsystem and related products thereof, wherein the purification ultrafiltration subsystem comprises a flocculation precipitation unit and an ultrafiltration unit, and the related products comprise a control device. The control device includes: the human-computer interaction module is used for receiving user operation settings and displaying related data; the input and output module is used for transmitting signals between the human-computer interaction module and the purification and ultrafiltration subsystem; the flocculation precipitation control module is connected with the flocculation precipitation unit so as to control the flocculation precipitation operation of the flocculation precipitation unit and realize automatic flocculation precipitation operation; and the ultrafiltration control module is connected with the ultrafiltration unit through the input and output module so as to control the ultrafiltration operation of the ultrafiltration unit and realize automatic ultrafiltration operation. By utilizing the scheme of the invention, automatic water source filtration and automatic system cleaning can be realized.
Description
Technical Field
The present invention relates generally to the field of water source purification. More particularly, the present invention relates to a control device, method, water source purification ultrafiltration system and computer program product for controlling a purification ultrafiltration subsystem.
Background
With the acceleration of the industrial process, the fields of industrial production, medicine and health, cultivation and the like all need pure water sources. The existing ultrafiltration equipment directly uses underground water under the normal temperature condition, and a special filter membrane is arranged inside the ultrafiltration equipment, so that macromolecular substances in the underground water can be filtered, and the separation efficiency of the underground water is improved to meet the production requirement. Generally, the operation process of the ultrafiltration equipment for producing water comprises the following steps: water production-positive flushing-backwashing-water production, wherein one positive flushing and backwashing is required to be carried out for 20-60 minutes generally. However, the conventional ultrafiltration devices are labor intensive and inefficient due to the use of manually opened associated valves. In addition, the specially-made filtering membrane of the ultrafiltration equipment is generally vertically arranged in the frame and is blocked by dirt at one end in the water production process, so that the pollutants on the surface of the membrane cannot be thoroughly cleaned by conventional forward washing and backwashing, and the water production efficiency is further reduced. In view of this, there is a need in the art for a solution that can automatically control ultrafiltration equipment to filter produced water and can automatically control enhanced ultrafiltration membrane cleaning.
Disclosure of Invention
To address at least one or more of the above-identified problems in the background, the present invention provides a control apparatus, method, system, and computer program product for controlling a purification and ultrafiltration subsystem, the control apparatus being of a modular design. Particularly, various parameters set through human-computer interaction control the flocculation precipitation control module and the ultrafiltration control module through the input and output module, and the invention realizes the high-efficiency automatic raw water filtration and the automatic cleaning process of the filtration equipment. Based on this, the present invention provides in various aspects various solutions as follows.
In one aspect, a control device for controlling a purification and ultrafiltration subsystem, the purification and ultrafiltration subsystem comprising a flocculation and precipitation unit and an ultrafiltration unit, the control device comprising: the human-computer interaction module is used for receiving operation settings of a user aiming at the purification ultrafiltration subsystem and displaying related data; the input and output module is connected between the human-computer interaction module and the purification and ultrafiltration subsystem and is used for transmitting signals between the human-computer interaction module and the purification and ultrafiltration subsystem; the flocculation precipitation control module is connected with the flocculation precipitation unit through the input and output module so as to control the flocculation precipitation operation of the flocculation precipitation unit and realize automatic flocculation precipitation operation; and the ultrafiltration control module is connected with the ultrafiltration unit through the input and output module so as to control the ultrafiltration operation of the ultrafiltration unit and realize automatic ultrafiltration operation.
In one embodiment, the system further comprises a plurality of controllers disposed in the clean-up ultrafiltration subsystem, connected to the input-output modules, for receiving control signals from the input-output modules and delivering corresponding feedback signals to the input-output modules.
In another embodiment, the ultrafiltration unit comprises an ultrafiltration membrane column for performing ultrafiltration on the water after the flocculation precipitation operation, and the ultrafiltration control module is used for automatically controlling the washing operation of the ultrafiltration membrane column in the ultrafiltration operation so as to realize primary washing operation and secondary washing operation of the ultrafiltration unit.
In yet another embodiment, the human-computer interaction module is configured to receive a number of operations of a user with respect to the primary flushing operation, wherein the ultrafiltration control module is configured to control the ultrafiltration unit to repeatedly perform the primary flushing operation and the filtration water production operation within the number of operations, and when the number of operations is reached, control the ultrafiltration unit to perform the secondary flushing operation, and after the secondary flushing operation, control the ultrafiltration unit to repeatedly perform the primary flushing operation and the filtration water production operation within the number of operations.
In yet another embodiment, the ultrafiltration control module is configured to control the ultrafiltration unit to perform a forward flush, a gas wash, an air-water mixed flush, a top backwash and a bottom backwash on the ultrafiltration membrane column in the primary flushing operation, and to control the ultrafiltration unit to perform a forward flush, a gas wash, a top-dosed backwash, a bottom-dosed backwash, a chemical soak, a gas wash, an air-water mixed flush, a top backwash and a bottom backwash on the ultrafiltration membrane column in the secondary flushing operation.
In yet another embodiment, the ultrafiltration unit further comprises a water purification valve and an ultrafiltration lift pump, wherein the ultrafiltration control module controls the start and the close of the water purification valve and the ultrafiltration lift pump according to the set water production time to perform a filtered water production operation during the water production time.
In still another embodiment, the flocculation and precipitation unit comprises a flocculation and precipitation lift pump, a dosing pump, a flocculation and precipitation tank and a transfer water tank which are sequentially arranged, and in the flocculation and precipitation operation, the flocculation and precipitation control module controls the opening and closing of the flocculation and precipitation lift pump and the dosing operation of the dosing pump according to the liquid level height of the transfer water tank so as to realize the primary purification of water in the flocculation and precipitation tank.
In yet another embodiment, the human-computer interaction module is further configured to receive a time setting of a user for a sludge discharge time in the flocculation precipitation operation, wherein the flocculation precipitation control module controls the flocculation precipitation unit to perform an automatic sludge discharge operation according to the time setting.
In yet another embodiment, the controller includes one or more of a button, a contactor, and/or a sensor.
In another aspect, the present invention discloses a water source purification ultrafiltration system comprising:
a purification and ultrafiltration subsystem comprising a flocculation and precipitation unit and an ultrafiltration unit, wherein the flocculation and precipitation unit is used for performing flocculation and precipitation operation on a water source, and the ultrafiltration unit is used for performing ultrafiltration operation on the water after the flocculation and precipitation operation; and the control device is used for controlling the purification ultrafiltration subsystem to obtain the purified water after the ultrafiltration operation.
In yet another aspect, the present invention discloses a method of controlling a clarification ultrafiltration subsystem comprising a flocculation and precipitation unit and an ultrafiltration unit using the control device described above, the method comprising: receiving, using the human-computer interaction module, user operational settings for the clean-up ultrafiltration subsystem and displaying relevant data; using the input-output module to communicate signals between the human-computer interaction module and the clean-up ultrafiltration subsystem; controlling the flocculation precipitation operation of the flocculation precipitation unit by using the flocculation precipitation control module so as to realize automatic flocculation precipitation operation; and controlling the ultrafiltration operation of the ultrafiltration unit using the ultrafiltration control module to achieve an automated ultrafiltration operation.
In yet another aspect, a computer program product comprising program instructions for controlling a clean-up ultrafiltration subsystem, which when executed by a processor, implements the above-described method.
By using the control device discussed in the above and several embodiments of the present invention, the man-machine interaction module can be used to set the number of times of the one-time rinsing and water-producing filtering cycle execution operation, the water production time of the water-producing filtering operation, and the sludge discharge time in the flocculation precipitation operation, and the signals are input to the flocculation precipitation control module and the ultrafiltration control module via the input and output module, so as to realize the automatic control of the flocculation precipitation control module and the ultrafiltration control module by using the flocculation precipitation control module and the ultrafiltration control module. Further, utilize controlling means can realize controlling ultrafiltration unit's ultrafiltration membrane post self-cleaning's process, solved this ultrafiltration membrane post and appear one end dirty stifled and difficult abluent problem in the operation process, and then improved the water production efficiency who purifies ultrafiltration subsystem.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. In the drawings, several embodiments of the disclosure are illustrated by way of example and not by way of limitation, and like or corresponding reference numerals indicate like or corresponding parts and in which:
FIG. 1 is an exemplary simplified diagram illustrating a control arrangement for controlling a clean-up ultrafiltration subsystem according to an embodiment of the present invention;
FIG. 2 is an exemplary block diagram illustrating a water source purification ultrafiltration system according to an embodiment of the present invention;
FIG. 3 is an exemplary flow diagram illustrating control of a clean-up ultrafiltration subsystem according to an embodiment of the present invention;
FIG. 4 is an exemplary flow diagram illustrating an ultrafiltration control module according to an embodiment of the present invention; and
FIG. 5 is an exemplary operational flow diagram illustrating a flocculation and sedimentation control module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
FIG. 1 is an exemplary simplified diagram illustrating a control arrangement 100 for controlling a clean-up ultrafiltration subsystem according to the present invention. As shown in fig. 1, the control device 100 may include a human-machine interaction module 101, an input-output module 102, a flocculation control module 103, and an ultrafiltration control module 104. By the cooperation of the four modules, the purification and ultrafiltration subsystem 105 (the details of which are shown in FIG. 2 and described later) can be efficiently controlled to obtain a quality purified water source. The human-computer interaction module 101, the input-output module 102, the flocculation control module 103 and the ultrafiltration control module 104 are described in detail below.
In one embodiment, the human-machine interaction module 101 may be configured to receive user operational settings for the sanitization and ultrafiltration subsystem and display the relevant data. In one scenario, the human-computer interaction module may be implemented, for example, as various types of touch display screens on which various image elements or visual components may be displayed for receiving various operation settings input by a user through touch. For example, the user can set the number of operations for one rinsing and water producing operation in the ultrafiltration operation by touching the display screen so as to perform the operation of the secondary rinsing according to the number of operations. Further, the user can set the water production time by aiming at the water production operation in one-time flushing so as to carry out the operation of one-time flushing according to the water production time. Additionally or alternatively, the user can also set the sludge discharge time for the sludge discharge pump and the sludge discharge valve at the bottom of the flocculation sedimentation tank in the flocculation sedimentation unit (which is included in the purification ultrafiltration subsystem 105) by using the touch display screen, so as to start the sludge discharge operation at the bottom of the flocculation sedimentation tank at regular time according to the sludge discharge time, thereby realizing the operation of primarily cleaning the flocculation sedimentation unit. Regarding the sludge discharge operation, a detailed description will be given later with reference to the accompanying drawings.
In one embodiment, the input/output module 102 of the present invention may be connected between the human-machine interaction module and the purification ultrafiltration subsystem described above for passing various types of signals between the human-machine interaction module and the purification ultrafiltration subsystem. In order to achieve signal communication with the purification and ultrafiltration subsystem, the control device of the present invention may further comprise a plurality of controllers disposed in the purification and ultrafiltration subsystem for collecting real-time measurement signals of the respective components in the purification and ultrafiltration subsystem. In one scenario, the aforementioned plurality of controllers may include, for example, one or more of buttons, contactors, sensors and/or inductors (e.g., various flow meters, etc.), which may be disposed, for example, at various modules, valves or switches in the purification ultrafiltration subsystem to enable activation, switching or measurement, etc., of the purification ultrafiltration subsystem and its modules (e.g., various subsystems). Based on this, the input-output module may receive feedback signals (including various real-time measurement data, such as flow or pressure, etc.) transmitted by the plurality of controllers in the purification ultrafiltration subsystem and present them to the user through the human-machine interaction module.
In one application scenario, the input/output module may be implemented as a single chip. As known to those skilled in the art, a single chip microcomputer (Microcontrollers) is an integrated circuit chip, which integrates functions (possibly including a display driving circuit, a pulse width modulation circuit, an analog multiplexer, an a/D converter, and the like) of a central processing unit CPU, a random access memory RAM, a read only memory ROM, various I/O ports and interrupt systems, a timer/counter, and the like with data processing capability onto a silicon chip by using a very large scale integrated circuit technology, thereby forming a small and perfect microcomputer system to implement applications in the field of industrial control. Specifically, the invention can receive signals output by a human-computer interaction module through an input pin of a singlechip I/O interface, can also receive feedback signals transmitted by a plurality of controllers in the purification ultrafiltration subsystem, and processes the input signals through the singlechip, so that the processed signals are output through the output pin of the singlechip I/O interface and are transmitted to the purification ultrafiltration subsystem. Therefore, the water source purification operation can be performed by controlling the purification and ultrafiltration subsystem.
In one embodiment, the flocculation control module 103 in the control device can be connected with the flocculation unit in the purification and ultrafiltration subsystem 105 via the input and output module so as to control the flocculation operation of the flocculation unit to realize the automatic flocculation operation. In one implementation scenario, the flocculation unit may include a flocculation lift pump, a dosing pump, a flocculation basin, and a transfer tank (as shown in fig. 2) arranged in sequence. Based on such exemplary arrangement, in the flocculation and precipitation operation, the flocculation and precipitation control module can control the opening and closing of the flocculation and precipitation lift pump and the dosing pump according to the liquid level height of the transit water tank, and then can control the operation of the flocculation and precipitation unit.
In one embodiment, the ultrafiltration control module 104 in the control apparatus may be connected to the ultrafiltration unit in the clean-up ultrafiltration subsystem 105 via an input-output module to control the ultrafiltration operation of the ultrafiltration unit for automated ultrafiltration. Similar to the flocculation and precipitation unit, in one implementation scenario, the ultrafiltration unit may include components such as an ultrafiltration lift pump, an ultrafiltration membrane column, and a water purification valve. Based on such an exemplary arrangement, in the ultrafiltration operation, the ultrafiltration control module can control the start and the close of the water purification valve and the ultrafiltration lift pump according to the liquid level height of the transit water tank, and can also control the water purification valve and the ultrafiltration lift pump to press water to the ultrafiltration membrane column for water source filtration, so as to realize the water production operation of filtering the water after the flocculation precipitation operation.
In the above operation of the ultrafiltration membrane column, the ultrafiltration control module may control the ultrafiltration membrane column to automatically perform a rinsing operation, and control the rinsing operation to be performed according to the water production time set by the human-computer interaction module, so as to implement a cleaning operation on the ultrafiltration membrane in the ultrafiltration membrane column. In the scheme of the invention, the flushing operation can comprise a primary flushing operation and a secondary flushing operation, and the operation times of the primary flushing operation and the water production operation in the ultrafiltration operation can be set by utilizing the human-computer interaction module, so that the ultrafiltration unit is controlled to execute the secondary flushing operation. In a particular flushing operation, a single flushing operation may include performing one or more of a forward flush, a gas wash, a gas-water mixed flush, a top backwash, and a bottom backwash to achieve a preliminary cleaning of the ultrafiltration membrane (i.e., a "single" flush). After one flush reaches a predetermined number of operations (e.g., a number preset by a user), a secondary flush operation may be performed, which may include, for example, performing one or more of a forward flush, a gas wash, a top-of-medicine backwash, a bottom-of-medicine backwash, a chemical soak, a gas wash, a gas-water mixed flush, a top backwash, and a bottom backwash, so that deeper cleaning of the ultrafiltration membrane column may be achieved.
Based on the above description, those skilled in the art will understand that the ultrafiltration control module 104 of the present invention can control the water purification valve and the ultrafiltration lift pump of the ultrafiltration unit to start up, and control the water purification valve and the ultrafiltration lift pump to pressurize water to the ultrafiltration membrane column according to a certain level of water in the intermediate water tank, so as to perform a water production operation on raw water. Furthermore, when the set water production time is up, the ultrafiltration control module controls the relevant valves and pumps to carry out backwashing on the ultrafiltration membrane column so as to clean the ultrafiltration membrane column. And finally, after the filtering and backwashing are circulated to the set times, the ultrafiltration control module controls a relevant valve and a relevant pump to carry out chemical enhanced cleaning on the ultrafiltration membrane column, and the filtering and backwashing circulation is continued after the chemical cleaning is finished.
As can be seen from the above description, the present invention can set operation items for the purification and ultrafiltration subsystem through the human-computer interaction module and display related data, wherein the related parameters may include, for example, the number of times of the circulation operations of one flushing and water production operations in the ultrafiltration operation, the water production time of the water production operations in the one flushing, and the sludge discharge time of the sludge discharge pump and the sludge discharge valve at the bottom of the flocculation sedimentation tank in the flocculation sedimentation unit. Furthermore, the invention can be used for transmitting control signals to the purification ultrafiltration unit through the input and output module, and respectively realizes the control of the flocculation precipitation unit and the ultrafiltration unit in the purification ultrafiltration subsystem by utilizing the flocculation precipitation control module and the ultrafiltration control module according to the control signals. By utilizing the control device, the high-efficiency control of the purification and ultrafiltration subsystem can be realized, so that the labor cost and the maintenance cost of the water source purification and ultrafiltration system are effectively reduced. In addition, the efficiency of water purification can be obviously improved through the efficient control of the purification ultrafiltration subsystem.
Fig. 2 is an exemplary schematic diagram illustrating a water source purification ultrafiltration system 200 according to the present invention. As shown therein, the water source purification ultrafiltration system 200 comprises the control device 100 of the present invention and the purification ultrafiltration subsystem 105 as previously described in connection with FIG. 1. The control device 100 in fig. 2 has been described in detail in the foregoing with reference to fig. 1, and the same contents are not repeated herein.
As for the purification and ultrafiltration subsystem 105, as shown in the figure, it may include a raw water tank 201 for holding raw water, a flocculation and precipitation lift pump 202 connected to the raw water tank 201, a dosing pump 203 for feeding disinfectant and flocculant, and a flocculation and precipitation tank 204 for performing a flocculation and precipitation operation. These aforementioned components may constitute a flocculation and sedimentation unit in the clean-up ultrafiltration subsystem 105. Next, the purification and ultrafiltration subsystem 105 further may include a transit water tank 205 for holding the water purified by flocculation and precipitation; an ultrafiltration lift pump 206 connected to the intermediate water tank 205, and an ultrafiltration membrane column 207 for performing an ultrafiltration operation.
The purification ultrafiltration subsystem 105 further comprises a water inlet valve 217 for flowing the water after the flocculation precipitation operation into the ultrafiltration membrane column; a water producing valve 208 for outputting water of the ultrafiltration membrane column; a water producing tank 209 for holding water after the ultrafiltration operation. To add the medicament, the clean-up ultrafiltration subsystem 105 further comprises a drug solution tank 210 for adding the medicament to the production tank 209.
In order to feed gas to the ultrafiltration membrane column, the purification and ultrafiltration subsystem 105 further comprises an air compressor 211 for injecting air, an air reservoir 212 for storing air, and an air inlet valve 213 for feeding gas from the air reservoir 212 to the ultrafiltration membrane column 207. To accomplish the chemical cleaning, the clean-up ultrafiltration subsystem 105 further includes a rinse tank 214 for holding chemicals, and a rinse pump 215 for pumping the chemicals in the rinse tank 214 into the ultrafiltration membrane column 207. To accomplish the backwashing and sludge discharge operations, the clean-up ultrafiltration subsystem 105 further comprises a backwash pump 220 for backwashing, which injects water in the product tank 220 into the ultrafiltration membrane column 207, a backwash valve 219 for inputting water in the product tank 220 into the ultrafiltration membrane column 207, a top discharge valve 216 and a bottom discharge valve 218 for backwashing, and a sludge discharge valve 221 and a sludge discharge pump 222 for sludge discharge operations. The various modules described above for performing the ultrafiltration and washing operations may constitute an ultrafiltration unit in clean-up ultrafiltration subsystem 105.
In an operational scenario, a user may activate the clean-up ultrafiltration subsystem of the present invention by pressing a set one-button activation button. First, the control device can control the flocculation unit in the purification and ultrafiltration subsystem to turn on the flocculation lift pump 202, and pump the raw water in the raw water tank 201 into the flocculation sedimentation tank 204. Further, the control device may control the flocculation unit to turn on the dosing pump 203 to pump the disinfectant and the flocculant into the flocculation sedimentation tank 204. Thereafter, a flocculation operation may be performed in the flocculation sedimentation tank 204 to complete a preliminary purification operation of the raw water and transfer the purified water to the intermediate water tank 205.
After the flocculation precipitation unit finishes primary purification of raw water, the control device can control the ultrafiltration unit in the purification and ultrafiltration subsystem to realize the filtration operation of the raw water. First, the uf unit may be controlled to turn on the air compressor 211 to charge the air reservoir 212 to power the various pneumatic valves of the uf unit with air from the reservoir. Then, the water inlet valve 217 and the water production valve 208 are controlled to be opened, and the ultrafiltration lift pump 206 is controlled to be opened after the valve is fed back to the open position signal, so that the water in the intermediate water tank 205 is pumped into the ultrafiltration membrane column 207 for the filtration operation. After the filtering operation, the obtained raw water may flow to the water production tank 209 through the water production valve 208. At this time, the control device may control the drug solution tank 210 to add a drug to the water production tank 209 to perform a sterilization operation on the water in the water production tank. Therefore, the control device realizes the water production operation of the water source purification ultrafiltration system by controlling the purification ultrafiltration subsystem.
In water production operations, when the water production tank 209 of the system reaches a high level, the control device controls the system to suspend water source filtration. Thereafter, the control unit resumes operation of the entire system after waiting for water from the product tank 209 to be used and after the liquid level returns to the set medium level. When the liquid level in the water producing tank 209 drops below the set low level, the control device can control the system to automatically perform the water producing step, thereby ensuring sufficient water supply. In addition, the control unit detects the water pressure at the water inlet of the ultrafiltration lift pump 206. When the water pressure is higher than the set protection pressure, the control device automatically reduces the frequency of the control system to reduce the water supply pressure.
The control device may detect the air pressure at the air inlet of the air reservoir 212 during the air purge of the clean-up ultrafiltration subsystem. When the air pressure is higher than the set pressure, the control device can close the air inlet and give an alarm through the man-machine interaction module so as to prompt personnel to properly adjust the air inlet pressure to protect the ultrafiltration membrane column. Further, in order to ensure thorough cleaning of the surface of the ultrafiltration membrane from contaminants occurring during operation, the control device performs control of the ultrafiltration unit so as to perform backwashing (i.e., one-time washing) of the ultrafiltration membrane in the ultrafiltration membrane column 207. After controlling the ultrafiltration membrane column to carry out backwashing operation, the control device continuously controls the ultrafiltration unit to carry out water production filtration. And after the step of waiting for water production by filtration and the step of backwashing are circularly executed for a preset number of times, continuously controlling the ultrafiltration unit to realize the chemically enhanced cleaning operation on the ultrafiltration membrane column. The backwashing operation and the chemically enhanced cleaning operation will be described in detail later with reference to fig. 4.
To facilitate an understanding of the implementation of the purification and ultrafiltration subsystem described herein, FIG. 3 illustrates an exemplary flow diagram 300 for controlling the purification and ultrafiltration subsystem in accordance with the present invention.
As shown in FIG. 3, first, the clean-up ultrafiltration subsystem is started in step 301. Next, in step 302, the system air compressor is turned on to charge the system air reservoir with air. Thereafter, the valve is controlled to open in step 303 as required by the process step and proceeds to step 304. In step 304, it is determined whether the valve is open. If the valve is not open, then the process proceeds to step 312 to stop the system. If the valve is open, then proceed to step 305. Operation of the ultrafiltration lift pump is started in step 305. Next, in step 306, it is determined whether the system operation reaches a set operation time. If the set time of operation has not been reached, then a return is made to step 306 to continue determining if the set time of operation has been reached. If the operation set time is reached, the operation of turning off the water pump is performed in step 307, and the operation of waiting for a delay time is performed in step 308. Next, a valve closing operation is performed at step 309 and the process proceeds to step 310. In step 310, a determination is made as to whether the valve is closed in place. If the valve is not closed, the process proceeds to step 312 to stop the system. If the valve is closed, the process proceeds to step 311 to automatically calculate the process to be performed in the next step, and then returns to step 303 to perform the next process again.
To facilitate an understanding of the implementation of the ultrafiltration control module described herein, fig. 4 illustrates an exemplary flow diagram 400 for controlling an ultrafiltration unit of a clean-up ultrafiltration subsystem according to the present invention.
As shown in fig. 4, first, a positive impact is performed in step 401. Particularly, by controlling a backwashing pump in the water production tank by using the ultrafiltration control module, purified water can be pumped into the ultrafiltration membrane column from the water production tank through a backwashing valve, and then the forward flushing operation of the ultrafiltration membrane column is completed. Next, filtration of the produced water is performed in step 402. As mentioned above, in order to realize the ultrafiltration operation of the water after the flocculation precipitation operation, the ultrafiltration control module controls to open the ultrafiltration lift pump, the water inlet valve and the water production valve to produce water. After the water production filtering operation of step 402 is completed, the flow proceeds to a flushing operation. In one rinsing operation, first, a positive rinsing operation of the ultrafiltration membrane column is performed in step 403, as performed in step 401. Next, a drain operation is performed in step 404 so that water remaining in the ultrafiltration membrane column and the piping can be drained. Thereafter, a gas-washing operation is performed in step 405. Particularly, the air inlet valve and the top exhaust valve are controlled to be opened by the ultrafiltration control module, so that air stored in the air storage tank can be controlled to enter the ultrafiltration membrane column at a certain pressure, and sticky impurities on the ultrafiltration membrane column can be blown off.
Proceed to step 406 after the gas-wash operation is completed. In step 406, a gas-water mixing operation is performed. Specifically, the backwashing pump, the backwashing valve and the top discharge valve are opened again while the gas washing operation is carried out, so that the gas washing operation and the water washing operation are simultaneously carried out, and the impurities of the ultra-model column are further washed. After the air-water mixing operation is completed, the operation proceeds to step 407 and step 408. A top backwash operation is performed in step 407 and a bottom backwash operation is performed in step 408 to further flush out impurities from the membrane column. After rinsing the ultrafiltration membrane column of impurities, the process flow may proceed to step 409, perform a positive flush operation in step 409, as performed in step 401, and proceed to step 410 after the positive flush operation is completed in step 409.
In step 410, it is determined whether the filtering and one-time rinsing reaches the set number of the circulation operations. If the set number of the circulation operations is not reached, the circulation operation of filtering and one flushing is continued back to step 401. If the set number of the circulation operations is reached, it proceeds to a chemically intensive washing operation (i.e., a secondary flushing operation).
In the chemical strengthening washing operation, first, a positive flushing operation is performed in step 411 as performed in step 401. Next, a drain operation is performed at step 412 as performed at step 404, and a gas wash operation is performed at step 413 as performed at step 405. Thereafter, a top-dosing backwash is performed in step 414. Particularly, when utilizing ultrafiltration control module control backwash pump to go into the ultrafiltration membrane post with the water purification pump in producing the water tank, control liquid medicine bucket via the backwash valve to ultrafiltration membrane post interpolation chemical agent, realize adding medicine top backwash to clean ultrafiltration membrane post more deeply. Thereafter, a medicated bottom backwash operation is performed in step 415, and a chemical solution is added to the ultrafiltration membrane column for bottom backwash in the same manner as in step 414.
After completing step 415 above, proceed to step 416. A chemical soak operation is performed in step 416. Particularly, through the manual valve that opens the washing water tank to utilize the scavenging pump to pour into ultrafiltration membrane post with the chemical agent who washs the water tank, so that dissolve the impurity that is difficult for falling of adhesion on the membrane post, and then can more effective clean membrane post. Next, a gas wash operation similar to that performed in step 405 is performed in step 417. Thereafter, a gas-water backwash similar to that performed at step 406 is performed at step 418, a top backwash similar to that performed at step 408 is performed at step 419, and a bottom backwash similar to that performed at step 408 is performed at step 420. After the chemical strengthening cleaning is performed, the ultrafiltration control module controls the ultrafiltration unit to automatically jump back to the step 401 to continue the cyclic operation of filtration and primary washing.
To facilitate an understanding of the implementation of the flocculation control module described herein above, fig. 5 is an exemplary flow diagram 500 illustrating control of a flocculation unit of a purification and ultrafiltration subsystem according to the present invention.
As shown in fig. 5, first, the control device starts the automatic operation of the flocculation sedimentation unit in step 501. Next, an operation of turning on the flocculation lift pump is performed in step 502. Thereafter, an operation of turning on the dosing pump is performed in step 503, and the disinfectant and the flocculating and precipitating agent are poured into the flocculating and precipitating tank through the dosing pump so as to perform primary flocculating and precipitating purification on the raw water in the flocculating and precipitating tank. After the operation of step 503 is completed, the flow advances to step 504. In step 504, the preliminarily purified water is controlled to overflow to the relay water tank, and it is judged in step 505 whether the liquid level of the relay water tank reaches a high level. If the level of the transfer tank does not reach the high level, the process returns to step 504 to continue overflowing water into the transfer tank. If the level of the transfer tank reaches the high level, then proceed to step 506. In step 506, the flocculation lift pump is turned off. Next, the dosing pump is turned off in step 507. After the above operation of step 507 is performed, the flow proceeds to step 508. In this step 508, it is determined whether the level of the transfer tank reaches the intermediate level. If the level of the transfer tank does not reach the intermediate level, the process returns to step 506 to continue to shut down the flocculation lift pump. If the liquid level of the transfer water tank reaches the middle liquid level, the flocculation precipitation lifting pump and the dosing pump are turned on again in the step 502. Further, in the process that the flocculation and precipitation control module controls the flocculation and precipitation unit, the flocculation and precipitation unit can judge whether the sludge discharge time of the flocculation and precipitation tank is reached. And if the mud discharging time is up, opening a mud discharging pump and a mud discharging valve to perform automatic mud discharging operation.
The control device and the water source purification ultrafiltration system of the present invention are described in detail above with reference to the accompanying drawings. Based on the above description, those skilled in the art will appreciate that the purification and ultrafiltration subsystem can be effectively controlled by the use of the control device to achieve efficient purification of the water source.
Based on the foregoing, those skilled in the art will appreciate that the present invention also actually discloses a method for controlling a clean-up ultrafiltration subsystem using the control device described in connection with fig. 1. In particular, the method may comprise a number of steps as follows. For example, a human-machine interaction module in a control device is used to receive user operational settings for the clean-up ultrafiltration subsystem and display relevant data; using an input-output module in the control device to transmit signals between the human-computer interaction module and the purification and ultrafiltration subsystem; a flocculation precipitation control module in the control device is used for controlling the flocculation precipitation operation of the flocculation precipitation unit so as to realize automatic flocculation precipitation operation; and controlling the ultrafiltration operation of the ultrafiltration unit using an ultrafiltration control module in the control device to achieve an automated ultrafiltration operation.
In some implementation scenarios, the control device of the present invention may be implemented in the form of software program modules. If implemented in the form of software program modules and sold or used as a stand-alone product, the software program modules may be stored in a computer-readable memory. In this regard, when the aspects of the present disclosure are embodied in a software product (e.g., a computer-readable storage medium), the software product may be stored in a memory, which may include instructions for causing a computer device (e.g., a personal computer, a server, or a network device, etc.) to perform some or all of the steps of the methods described in the embodiments of the present invention. The aforementioned Memory may include, but is not limited to, a usb disk, a flash disk, a Read Only Memory ("Read Only Memory", abbreviated as ROM), a Random Access Memory ("Random Access Memory", abbreviated as RAM), a removable hard disk, a magnetic disk or an optical disk, and various media capable of storing program codes.
It should be understood that the terms "first", "second", "third" and "fourth", etc. in the claims, the description and the drawings of the present invention are used for distinguishing different objects and are not used for describing a particular order. The terms "comprises" and "comprising," when used in the specification and claims of this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and claims of this application, the singular form of "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and claims of this specification refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.
As used in this specification and claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Although the embodiments of the present invention are described above, the descriptions are only examples for facilitating understanding of the present invention, and are not intended to limit the scope and application scenarios of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A control device for controlling a purification and ultrafiltration subsystem, the purification and ultrafiltration subsystem comprising a flocculation and precipitation unit and an ultrafiltration unit, the control device comprising:
the human-computer interaction module is used for receiving operation settings of a user aiming at the purification ultrafiltration subsystem and displaying related data;
the input and output module is connected between the human-computer interaction module and the purification and ultrafiltration subsystem and is used for transmitting signals between the human-computer interaction module and the purification and ultrafiltration subsystem;
the flocculation precipitation control module is connected with the flocculation precipitation unit through the input and output module so as to control the flocculation precipitation operation of the flocculation precipitation unit and realize automatic flocculation precipitation operation; and
and the ultrafiltration control module is connected with the ultrafiltration unit through the input and output module so as to control the ultrafiltration operation of the ultrafiltration unit and realize automatic ultrafiltration operation.
2. The control device of claim 1, further comprising a plurality of controllers disposed in the clean-up ultrafiltration subsystem and connected to the input-output module to receive control signals from the input-output module and to transmit corresponding feedback signals to the input-output module.
3. The control device of claim 2, wherein the ultrafiltration unit comprises an ultrafiltration membrane column for performing ultrafiltration on the water after the flocculation precipitation operation, and the ultrafiltration control module is used for automatically controlling the washing operation of the ultrafiltration membrane column in the ultrafiltration operation so as to realize primary washing operation and secondary washing operation of the ultrafiltration unit.
4. The control device of claim 3, wherein the human-computer interaction module is configured to receive a number of operations of the user with respect to the one-time rinsing operation, wherein the ultrafiltration control module is configured to control the ultrafiltration unit to repeatedly perform the one-time rinsing operation and the water production filtering operation within the number of operations, and when the number of operations is reached, control the ultrafiltration unit to perform the two-time rinsing operation, and after the two-time rinsing operation, control the ultrafiltration unit to repeatedly perform the one-time rinsing operation and the water production filtering operation within the number of operations.
5. The control device of claim 4, wherein the ultrafiltration control module is configured to control the ultrafiltration unit to perform a forward flush, a gas wash, an air-water mixed flush, a top backwash, and a bottom backwash on the ultrafiltration membrane column in the primary flushing operation, and to control the ultrafiltration unit to perform a forward flush, a gas wash, a top medicated backwash, a bottom medicated backwash, a chemical soak, a gas wash, an air-water mixed flush, a top backwash, and a bottom backwash on the ultrafiltration membrane column in the secondary flushing operation.
6. The control device of claim 4, wherein the ultrafiltration unit further comprises a water purification valve and an ultrafiltration lift pump, wherein the ultrafiltration control module controls the water purification valve and the ultrafiltration lift pump to be turned on and off according to the set water production time so as to perform the water production operation for filtration during the water production time.
7. The control device according to any one of claims 1 to 5, wherein the flocculation unit comprises a flocculation lift pump, a dosing pump, a flocculation sedimentation tank and a transfer water tank which are arranged in sequence, and in the flocculation operation, the flocculation sedimentation control module controls the on and off of the flocculation lift pump and the dosing operation of the dosing pump according to the liquid level of the transfer water tank so as to realize the primary purification of water in the flocculation sedimentation tank.
8. A method of controlling a clean-up ultrafiltration subsystem comprising a flocculent precipitation unit and an ultrafiltration unit using a control device according to any one of claims 1-7, the method comprising:
receiving, using the human-computer interaction module, user operational settings for the clean-up ultrafiltration subsystem and displaying relevant data;
using the input-output module to communicate signals between the human-computer interaction module and the clean-up ultrafiltration subsystem;
controlling the flocculation precipitation operation of the flocculation precipitation unit by using the flocculation precipitation control module so as to realize automatic flocculation precipitation operation; and
controlling ultrafiltration operation of the ultrafiltration unit using the ultrafiltration control module to achieve automated ultrafiltration operation.
9. A computer program product comprising program instructions for controlling a clean-up ultrafiltration subsystem, which when executed by a processor, implement the method of claim 8.
10. A water source purification ultrafiltration system, comprising:
a purification and ultrafiltration subsystem comprising a flocculation and precipitation unit and an ultrafiltration unit, wherein the flocculation and precipitation unit is used for performing flocculation and precipitation operation on a water source, and the ultrafiltration unit is used for performing ultrafiltration operation on the water after the flocculation and precipitation operation; and
the control device according to any one of claims 1-7, for controlling the clean ultrafiltration subsystem to obtain purified water after an ultrafiltration operation.
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