CN113578059A - Online automatic cleaning system and method for ultrafiltration membrane equipment - Google Patents
Online automatic cleaning system and method for ultrafiltration membrane equipment Download PDFInfo
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- CN113578059A CN113578059A CN202110749004.XA CN202110749004A CN113578059A CN 113578059 A CN113578059 A CN 113578059A CN 202110749004 A CN202110749004 A CN 202110749004A CN 113578059 A CN113578059 A CN 113578059A
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- ultrafiltration membrane
- membrane equipment
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- 239000012528 membrane Substances 0.000 title claims abstract description 93
- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 81
- 238000004140 cleaning Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000012459 cleaning agent Substances 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000002791 soaking Methods 0.000 claims abstract description 8
- 238000011010 flushing procedure Methods 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000004480 active ingredient Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 230000009469 supplementation Effects 0.000 claims description 6
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 description 12
- 239000003814 drug Substances 0.000 description 11
- 239000002585 base Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 231100001240 inorganic pollutant Toxicity 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000012445 acidic reagent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/162—Use of acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/164—Use of bases
Abstract
The invention provides an on-line automatic cleaning system and method of ultrafiltration membrane equipment, the automatic cleaning method of the invention can carry out automatic cleaning under the condition that the ultrafiltration membrane equipment needs cleaning as much as possible by taking accumulated working time and transmembrane pressure difference as judgment starting conditions, cleaning operation is carried out by automatically configuring cleaning agents, circularly cleaning, soaking, draining and water replenishing flushing, and whether necessary steps are repeated or not is judged by taking the pH value of the residual cleaning agents as the judgment conditions after cleaning is finished.
Description
Technical Field
The invention relates to the technical field of ultrafiltration membrane equipment, in particular to an online automatic cleaning system and method of ultrafiltration membrane equipment.
Background
The ultrafiltration membrane equipment is in the operation process, carry out filtering work through certain pressure drive membrane system, along with the continuous filtration of ultrafiltration membrane equipment, the membrane module can produce the pollution jam gradually, and then lead to the product water volume to descend gradually, under the normal operating of usually, in order to guarantee the membrane module, can wash ultrafiltration membrane equipment after shutting down, generally adopt chemical agent to wash then cooperate and just wash and recoil operation, make the pollutant discharged, and the whole flow of washing operation is manual operation, on the one hand, need artifically dismantle and the cleaning operation to ultrafiltration membrane equipment, on the other hand, the process operation risk of manual configuration washing agent is higher, and manual cleaning is difficult to carry out good quality and controls, various reasons are put together and lead to the cleaning performance of ultrafiltration membrane equipment relatively poor, and inefficiency.
Disclosure of Invention
In view of the above, the invention provides an online automatic cleaning system and method for ultrafiltration membrane equipment.
The technical scheme of the invention is realized as follows: the invention provides an online automatic cleaning method of ultrafiltration membrane equipment, which comprises the following steps:
step S1, judging whether the transmembrane pressure difference exceeds a preset value or not by the system, or judging whether the accumulated working time of the ultrafiltration membrane equipment exceeds a preset time or not, if so, maintaining the normal work of the ultrafiltration membrane equipment, and if at least one exceeds a preset parameter, entering step S2;
s2, suspending the normal operation of the ultrafiltration membrane equipment, configuring a cleaning agent by the system, pumping the cleaning agent into the ultrafiltration membrane equipment, circularly cleaning for a certain time, stopping pumping, and maintaining the cleaning agent in the ultrafiltration membrane equipment for soaking for a certain time;
s3, discharging the cleaning agent in the ultrafiltration membrane equipment, adding an equal amount of clear water into the original configuration cleaning agent according to the amount of the discharged cleaning agent for supplementation, and flushing the interior of the ultrafiltration membrane equipment by using the supplemented cleaning agent after the supplementation is finished;
step S4, determining whether the pH of the remaining cleaning agent is within a predetermined range, if so, completing the rinsing, otherwise, continuing to execute step S3.
In addition to the above technical means, preferably, in step S1, the transmembrane pressure difference Δ P ═ [ (P) isInto+PConcentration)/2]-PProduct produced by birthWherein said P isIntoIs the water pressure of the water inlet of the ultrafiltration membrane equipment, PConcentrationWater pressure of concentrate port of ultrafiltration membrane equipment, PProduct produced by birthThe water pressure of the water outlet of the ultrafiltration membrane equipment is obtained by arranging pressure sensors at the water inlet, the water outlet and the concentrated water outlet of the ultrafiltration membrane equipment.
Based on the above technical solution, preferably, in step S2, the method for configuring the cleaning agent by the system includes: adding a certain amount of water into a fixed container, adding the active ingredients into the fixed container through a metering pump, uniformly stirring until the pH value of the obtained cleaning agent meets the preset requirement, and stopping adding the active ingredients.
On the basis of the above technical solution, it is preferable that step S2 is repeated at least 1 time after step S2 before step S3.
On the basis of the above technical solution, it is preferable that before the step S2 is repeated for the first time, whether the pH value of the cleaning agent meets the preset requirement is detected, if not, the effective ingredient is added into the fixed container, and if yes, the step S2 is directly repeated.
It is further preferred that step S3 is repeated at least 2 times before step S4, after step S3.
In addition to the above technical means, preferably, the cleaning agent is an acidic agent, and the pH of the cleaning agent prepared in step S2 is 1.9 to 2.1.
On the basis of the above technical solution, it is preferable that the method further includes step S5: repeating the steps S2-S4, wherein the cleaning agent is alkaline agent in the step S5, and the pH value of the configured cleaning agent is 11.9-12.1.
On the basis of the above technical solution, preferably, in step S4, the preset range of pH is 6.8-7.2.
The invention also provides an online automatic cleaning system of the chute filter membrane equipment, which comprises a water inlet valve, a water outlet valve, a concentrated water valve, a control module, a medicine box, a metering pump and a pH meter, wherein the pH meter is arranged in the medicine box, the pH meter, the metering pump, the water inlet valve and the water outlet valve are in signal connection with the control module, a water outlet of the metering pump is communicated with the medicine box, a water inlet of the metering pump is selectively communicated with the medicine box through the water inlet valve and a water inlet of the ultrafiltration membrane equipment, a water outlet of the ultrafiltration membrane equipment is communicated with the medicine box through the water outlet valve, and a concentrated water inlet of the ultrafiltration membrane equipment is communicated with a drain pipe pipeline through the concentrated water valve.
On the basis of the technical scheme, the system preferably further comprises a gateway, a signal base station and a terminal, the control module is in signal connection with the signal base station through the gateway, the terminal is in signal connection with the base station, and parameters of the control module are adjusted through the terminal.
On the basis of the above technical solution, preferably, the terminal includes a server, a PC terminal, and a mobile terminal.
Compared with the prior art, the on-line automatic cleaning system and the method for the ultrafiltration membrane equipment have the following beneficial effects:
(1) the invention provides an online automatic cleaning system of ultrafiltration membrane equipment and a corresponding cleaning method, which can realize online automatic cleaning of the ultrafiltration membrane equipment, automatically judge whether the ultrafiltration membrane equipment needs cleaning, then call corresponding module equipment to carry out corresponding cleaning preparation and cleaning, and carry out automatically configured cleaning agents respectively in a circulating cleaning and washing, soaking, pesticide discharging and washing mode, so that the online automatic cleaning system can play a good role in cleaning and removing dirt blockage in the ultrafiltration membrane equipment;
(2) according to the invention, the modes of acid washing and alkali washing are respectively adopted, so that organic and inorganic pollutants in ultrafiltration membrane equipment can be effectively removed, and the modes of automatic dosage and condition detection are adopted, so that the cleaning method disclosed by the invention has the advantages of high automation degree, good cleaning effect, complete and thorough cleaning, and capability of well replacing manual operation;
(3) the cleaning system can also realize manual remote monitoring and condition control, and has certain flexibility.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of an on-line automatic cleaning method of an ultrafiltration membrane apparatus according to the present invention;
FIG. 2 is a block diagram of the structure of an on-line automatic cleaning system of the ultrafiltration membrane equipment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Because the ultrafiltration membrane equipment can have the problem of pollution and blockage in the long-term use process, in order to ensure that the ultrafiltration membrane equipment can stably run for a long time, an automatic cleaning system needs to be arranged, so that the ultrafiltration membrane equipment can always keep the performance of the ultrafiltration membrane equipment in accordance with the requirements in the long-term running process, the cost of manual cleaning is saved, and the cleaning difficulty is reduced.
The conventional operation is to manually clean ultrafiltration membrane equipment, after the ultrafiltration membrane equipment is dismantled, a corresponding cleaning agent is configured according to needs, and then the ultrafiltration membrane is subjected to operations such as soaking, washing, backwashing and the like, so that the operation is extremely complicated, and the operation is assisted by separate cleaning equipment.
As shown in fig. 1, the cleaning method of the present invention includes:
step S1, judging whether the transmembrane pressure difference exceeds a preset value or not, or whether the accumulated working time of the ultrafiltration membrane equipment exceeds a preset time or not, if not, maintaining the normal work of the ultrafiltration membrane equipment, and if at least one exceeds a preset parameter, entering step S2;
s2, suspending the normal operation of the ultrafiltration membrane equipment, configuring a cleaning agent by the system, pumping the cleaning agent into the ultrafiltration membrane equipment, circularly cleaning for a certain time, stopping pumping, and maintaining the cleaning agent in the ultrafiltration membrane equipment for soaking for a certain time;
s3, discharging the cleaning agent in the ultrafiltration membrane equipment, adding an equal amount of clear water into the original configuration cleaning agent according to the amount of the discharged cleaning agent for supplementation, and flushing the interior of the ultrafiltration membrane equipment by using the supplemented cleaning agent after the supplementation is finished;
step S4, determining whether the pH of the remaining cleaning agent is within a predetermined range, if so, completing the rinsing, otherwise, continuing to execute step S3.
In general, after an ultrafiltration membrane device works for a period of time, a large amount of pollutants are accumulated on the surface of a membrane component, so that the membrane flux is influenced, and finally, the pressure difference on two sides of the membrane is large, so that whether the ultrafiltration membrane component needs to be cleaned or not is accurately identified.
Generally, the preset time is 90 days, and the preset value of transmembrane pressure difference is 0.15 MPa.
In the above technical solution, one practical step of step S2 includes: the system automatically configures a cleaning agent, the cleaning agent is introduced through a water inlet of the ultrafiltration membrane equipment, the cleaning agent is discharged from a water outlet and mixed with the original cleaning agent, the cyclic cleaning is carried out for 40min, after the cyclic cleaning is finished, the water inlet and the water outlet of the ultrafiltration membrane equipment are closed, and the cleaning agent is kept in the ultrafiltration membrane equipment and is soaked for 30 min.
In the above technical solution, the method for automatically configuring the cleaning agent by the system includes: and adding quantitative water into the fixed container, adding the active ingredients into the fixed container through a metering pump, uniformly stirring to obtain a cleaning agent, monitoring the pH value of the cleaning agent, judging whether the preset requirement is met, if the preset requirement is not met, continuing to add the active ingredients, and if the preset requirement is met, stopping adding the active ingredients.
In the configuration method, the amount of water is preset according to the volume of the ultrafiltration membrane equipment, and the cleaning agent is configured in a fixed container, so that the ultrafiltration membrane equipment can be cleaned circularly, and the cleaning agent can be managed uniformly.
The contaminants adhered to the membrane surface in the ultrafiltration membrane apparatus may be washed by the step S2, and it is understood that the concentrate inlet of the ultrafiltration membrane apparatus needs to be closed during the circulation washing.
In step S3, the method for discharging the cleaning agent in the ultrafiltration membrane apparatus is to open the concentrate inlet of the ultrafiltration membrane apparatus to discharge the contaminants on the inlet side of the membrane, and in step S2, the cleaning agent can enter the inner side of the membrane by means of circulation cleaning, so that the contaminants attached to the pores of the membrane are fully contacted with the cleaning agent, thereby achieving the purpose of cleaning.
In order to improve the cleaning effect, before the step S3, after the step S2, the step S2 is repeated at least 1 time, the number of times of repetition can be realized by changing preset parameters of the system, and the cleaning effect can be further improved by repeating the cyclic cleaning and soaking.
In order to ensure that the cleaning agent still has good effectiveness, it is considered that before repeating step S2, whether the pH of the cleaning agent reaches the preset requirement is detected, if not, the effective component is added into the fixed container, otherwise, step S2 is directly repeated.
Through the operation, the consumed effective components can be supplemented, so that the cleaning agent still has a good cleaning effect before the next repeated cleaning cycle and soaking.
In a specific embodiment, before step S4, after step S3, step S3 is repeatedly performed at least 2 times, by discharging, adding water and washing twice, the residual contaminants in the ultrafiltration membrane apparatus can be discharged as much as possible, and the residual cleaning agent can be washed at the same time, and in cooperation with step S4, a judgment function can be performed, and according to the amount of the residual cleaning agent, whether the agent is completely removed can be judged, and according to whether the agent is completely removed, the washing is performed for the corresponding number of times, so that the cleaning effect is further improved.
In the specific embodiment, since the substances clogging the ultrafiltration membrane equipment are generally inorganic substances, and thus can be removed by acid washing, the cleaning agent to be used is preferably an acidic agent, and the pH of the corresponding cleaning agent should be controlled to 1.9-2.1, preferably 2.
In order to further improve the cleaning effect, the method also comprises a step S5, wherein the step S5 is to repeat the steps S2 to S4, but the cleaning medicament used in the step S5 is replaced by the alkaline medicament, and the target value of the pH control of the cleaning medicament is changed to 11.9-12.1.
Specifically, in step S5, the corresponding step S2 and the corresponding step S3 may be repeatedly performed in a loop.
After the acidic reagent is cleaned, the alkaline reagent is adopted for cleaning, so that organic pollutants can be cleaned, and the problem that the organic pollutants and inorganic pollutants cannot be effectively cleaned when being combined is avoided.
In a specific embodiment, the method includes detecting a pH value of the remaining cleaning agent, and determining whether the remaining cleaning agent is neutral after being discharged and diluted with clean water, i.e., whether the effective components of the cleaning agent are substantially used up, so that incomplete use of the cleaning agent can be avoided, and the pH of the cleaning agent inevitably approaches neutral due to consumption of the cleaning agent by pollutants and discharge of the cleaning agent to exhaust gas in the cleaning process, and when the cleaning is sufficiently complete, the pH approaches neutral, and the preset pH range is 6.8-7.2, which is more reasonable.
In specific implementation mode, this application still provides an online self-cleaning system of milipore filter equipment, as shown in fig. 2, specifically include inlet valve, outlet valve, dense water valve, control module, medical kit, measuring pump and pH meter, the pH meter is installed in the medical kit, and pH meter, measuring pump, inlet valve and outlet valve all communicate with control module signal connection, and the delivery port and the medical kit of measuring pump communicate each other, and the water inlet of measuring pump communicates each other through the inlet valve with the water inlet of milipore filter equipment selectively with the medical kit, and the delivery port of milipore filter equipment communicates each other through outlet valve and medical kit, and the dense mouth of a river of milipore filter equipment communicates each other through dense water valve and blow off pipe pipeline.
Among the above embodiment, inlet valve and outlet valve decibel carry out switching control to the water inlet and the delivery port of milipore filter equipment, and the dense mouth of a river of milipore filter equipment is then controlled through setting up solitary dense water valve, the measuring pump is arranged in the measuring to the pipeline volume of liquid of medical kit, be convenient for wash the configuration of medicament, the import department of measuring pump can communicate different raw materials pipelines according to actual need, the medical kit is used for the medicament of configuration of keeping in, the pH meter is then used for detecting the pH value of the washing medicament in the medical kit, control module is used for saving predetermined parameter and controls each module, it is concrete, start and stop including the work of measuring pump, control inlet valve, the switching of outlet valve and dense water valve etc..
In a specific implementation mode, the system further comprises a gateway, a signal base station and a terminal, wherein the control module is in signal connection with the signal base station through the gateway, the terminal is in signal connection with the base station, and parameters of the control module are adjusted through the terminal.
In the above embodiment, the terminal can communicate with the control module and modify the parameters in the control module, so that the online automatic cleaning system of the ultrafiltration membrane equipment is more intelligent and convenient for remote control and monitoring.
In a specific embodiment, it should be understood that the ultrafiltration membrane device further comprises a pressure sensor, wherein the pressure sensor is installed in a membrane cavity of the ultrafiltration membrane device and used for monitoring the pressure of the water inlet, the water outlet and the concentrate inlet, so that parameters are output to the control module, and the control module can conveniently judge whether automatic cleaning is needed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An on-line automatic cleaning method of ultrafiltration membrane equipment is characterized by comprising the following steps:
step S1, judging whether the transmembrane pressure difference exceeds a preset value or not, or whether the accumulated working time of the ultrafiltration membrane equipment exceeds a preset time or not, if not, maintaining the normal work of the ultrafiltration membrane equipment, and if at least one exceeds a preset parameter, entering step S2;
s2, suspending the normal operation of the ultrafiltration membrane equipment, configuring a cleaning agent by the system, pumping the cleaning agent into the ultrafiltration membrane equipment, circularly cleaning for a certain time, stopping pumping, and maintaining the cleaning agent in the ultrafiltration membrane equipment for soaking for a certain time;
s3, discharging the cleaning agent in the ultrafiltration membrane equipment, adding an equal amount of clear water into the original configuration cleaning agent according to the amount of the discharged cleaning agent for supplementation, and flushing the interior of the ultrafiltration membrane equipment by using the supplemented cleaning agent after the supplementation is finished;
step S4, determining whether the pH of the remaining cleaning agent is within a predetermined range, if so, completing the rinsing, otherwise, continuing to execute step S3.
2. The on-line automatic cleaning method for the ultrafiltration membrane equipment as claimed in claim 1, wherein in the step S2, the method for systematically configuring the cleaning agent comprises the following steps: adding a certain amount of water into a fixed container, adding the active ingredients into the fixed container through a metering pump, uniformly stirring until the pH value of the obtained cleaning agent meets the preset requirement, and stopping adding the active ingredients.
3. The on-line automatic cleaning method for ultrafiltration membrane equipment according to claim 1, wherein step S2 is repeated at least 1 time before step S3 and after step S2.
4. The on-line automatic cleaning method for the ultrafiltration membrane equipment as claimed in claim 3, further comprising, before the first repetition of step S2, detecting whether the pH of the cleaning agent meets the preset requirement, if not, adding an effective component into the fixed container, and if so, directly repeating step S2.
5. The on-line automatic cleaning method for ultrafiltration membrane equipment according to claim 1, wherein step S3 is repeated at least 2 times before step S4 and after step S3.
6. The on-line automatic cleaning method for the ultrafiltration membrane equipment according to claim 1, wherein the cleaning agent is an acidic agent, and in step S2, the pH of the prepared cleaning agent is 1.9-2.1.
7. The on-line automatic cleaning method for the ultrafiltration membrane equipment according to claim 6, further comprising the step of S5: repeating the steps S2-S4, wherein the cleaning agent is alkaline agent in the step S5, and the pH value of the configured cleaning agent is 11.9-12.1.
8. The on-line automatic cleaning method for ultrafiltration membrane equipment according to claim 1, wherein the preset range of pH is 6.8 to 7.2 in step S4.
9. The utility model provides an online self-cleaning system of milipore filter equipment, its characterized in that, includes inlet valve, outlet valve, dense water valve, control module, medical kit, measuring pump and pH meter, the pH meter is installed in the medical kit, and pH meter, measuring pump, inlet valve and outlet valve all communicate with control module signal connection, and the delivery port and the medical kit of measuring pump communicate each other, and the water inlet of measuring pump communicates each other with the water inlet that the medical kit passes through inlet valve and milipore filter equipment selectively, and the delivery port of milipore filter equipment communicates each other with the medical kit through the outlet valve, and the dense mouth of a river of milipore filter equipment communicates each other with the blow off pipe pipeline through dense water valve.
10. The on-line automatic cleaning system of the ultrafiltration membrane equipment as claimed in claim 9, further comprising a gateway, a signal base station and a terminal, wherein the control module is in signal connection with the signal base station through the gateway, the terminal is in signal connection with the base station, and parameters of the control module are adjusted through the terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110749004.XA CN113578059A (en) | 2021-07-01 | 2021-07-01 | Online automatic cleaning system and method for ultrafiltration membrane equipment |
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| CN202110749004.XA CN113578059A (en) | 2021-07-01 | 2021-07-01 | Online automatic cleaning system and method for ultrafiltration membrane equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117101419A (en) * | 2023-10-23 | 2023-11-24 | 山东卫康生物医药科技有限公司 | Medical functional food production control system |
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| CN102485328A (en) * | 2010-12-02 | 2012-06-06 | 东丽纤维研究所（中国）有限公司 | Cleaning method of immersion membrane filtration system |
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