CN113181773A - Sequential control method for ultrafiltration water treatment - Google Patents
Sequential control method for ultrafiltration water treatment Download PDFInfo
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- CN113181773A CN113181773A CN202110450317.5A CN202110450317A CN113181773A CN 113181773 A CN113181773 A CN 113181773A CN 202110450317 A CN202110450317 A CN 202110450317A CN 113181773 A CN113181773 A CN 113181773A
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- ultrafiltration
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- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 240
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 67
- 238000011001 backwashing Methods 0.000 claims abstract description 54
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 238000002791 soaking Methods 0.000 claims description 43
- 238000004140 cleaning Methods 0.000 claims description 32
- 238000012423 maintenance Methods 0.000 claims description 17
- 239000003814 drug Substances 0.000 claims description 11
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 5
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000008400 supply water Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/22—Controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/145—Ultrafiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/18—Apparatus therefor
-
- 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
-
- 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
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a sequential control method for ultrafiltration water treatment, which comprises the following steps: in the ultrafiltration process, acquiring a liquid level parameter value I of an ultrafiltration membrane pool, controlling corresponding ultrafiltration equipment to finish ultrafiltration when the liquid level parameter value I reaches a liquid level set value required by each ultrafiltration equipment and entering backwashing, and simultaneously recording the time point of finishing ultrafiltration of each ultrafiltration equipment; queuing the ultrafiltration devices according to the sequence of the time points of the ultrafiltration completion of the ultrafiltration devices, and backwashing the ultrafiltration devices according to the queuing sequence. According to the invention, backwashing queuing is carried out on each ultrafiltration device according to the time length of ultrafiltration completion of each device, so that the ultrafiltration device with the time of ultrafiltration completion carries out backwashing first, and thus, backwashing of each ultrafiltration device is carried out in sequence, the production efficiency is improved, and usage conflict is prevented.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a sequential control method for ultrafiltration water treatment.
Background
Ultrafiltration is a pressurized membrane separation technique, in which small molecular solutes and solvents are passed through a special membrane with a certain pore size under a certain pressure, while large molecular solutes are not passed through the membrane and remain on one side of the membrane, thus partially purifying the large molecular substances. Ultrafiltration is one of the membrane separation techniques using pressure as the driving force. The purpose is to separate macromolecules from small molecules.
The ultrafiltration technology was generally applied in the production of drinking water in the early 90 s, and in recent years, the ultrafiltration technology is used for pretreatment in a reverse osmosis water purification preparation system and is widely applied to water treatment processes in the fields of medicine, chemical industry, food, environmental protection and the like. The ultrafiltration system is used for the front-end water supply treatment of the reverse osmosis device in the desalted water and reclaimed water reuse system, and adopts a DCS system for control operation.
Because the problem of how to effectively connect the automatic control public equipment is not considered in the design of the prior art, namely, the control mode of the existing ultrafiltration water treatment is that a plurality of ultrafiltration equipment share one backwash pump, but the backwashing process of each ultrafiltration equipment is to backwash the equipment completing the ultrafiltration according to the set sequence, the condition can cause the equipment preferentially completing the ultrafiltration to wait for the equipment not completing the ultrafiltration, thereby wasting time and causing the efficiency of the ultrafiltration water treatment of the equipment to be low, and when one of the ultrafiltration equipment fails, the backwashing program according to the set sequence can cause the equipment to stop running due to the equipment failure, therefore, a sequence control method of the ultrafiltration water treatment is needed to solve the problem.
Disclosure of Invention
The present invention has been made to overcome the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a sequential control method of ultrafiltration water treatment.
The technical scheme of the invention is as follows:
the method comprises the following steps:
in the ultrafiltration process, acquiring a liquid level parameter value I of an ultrafiltration membrane pool, controlling corresponding ultrafiltration equipment to finish ultrafiltration when the liquid level parameter value I reaches a liquid level set value required by each ultrafiltration equipment and entering backwashing, and simultaneously recording the time point of each ultrafiltration equipment finishing ultrafiltration;
queuing the ultrafiltration devices according to the sequence of the time points of the ultrafiltration completion of the ultrafiltration devices, and backwashing the ultrafiltration devices according to the queuing sequence.
Preferably, the step of ultrafiltration by the ultrafiltration device comprises:
acquiring whether water is injected into an ultrafiltration membrane pool of ultrafiltration equipment or not, and acquiring a liquid level parameter value II of the ultrafiltration membrane pool when the ultrafiltration membrane pool is detected to have water injection;
when the detected liquid level parameter value II of the ultrafiltration membrane pool reaches a liquid level set value required by ultrafiltration, setting ultrafiltration time of ultrafiltration equipment, and carrying out ultrafiltration on water in the ultrafiltration membrane pool;
and controlling the ultrafiltration equipment to finish ultrafiltration until the ultrafiltration time of the ultrafiltration equipment reaches the set value of the ultrafiltration time and the liquid level parameter value I reaches the set value of the liquid level required by ultrafiltration and entering backwashing.
Preferably, the step of backwashing the ultrafiltration devices in the order of the queue:
setting backwashing time, controlling a backwashing pump to backwash the filter membrane of each ultrafiltration membrane pool according to the queuing sequence of each device and the set backwashing time, and draining the ultrafiltration membrane pool of each device after backwashing of each device is finished;
and setting a cycle period of the equipment from ultrafiltration to backwashing to drainage, and cleaning and maintaining each ultrafiltration equipment according to the cycle period.
Preferably, the step of draining the ultrafiltration membrane tank of each ultrafiltration unit comprises:
and acquiring the backwashing finish time of each device, and controlling the device to drain water according to the backwashing finish time.
Preferably, the step of performing cleaning maintenance on the ultrafiltration apparatus according to the cycle period comprises:
setting maintenance and cleaning time, and adding chemicals into an ultrafiltration membrane pool of the ultrafiltration equipment when the maintenance and cleaning time of the ultrafiltration equipment reaches the maintenance and cleaning time of the ultrafiltration equipment;
obtaining the parameter value of the soaking liquid level, starting to soak the filter membrane of the ultrafiltration membrane tank when the value of the soaking liquid level reaches the set value of the soaking liquid level,
setting the soaking cycle times and the soaking time, acquiring the soaking time, performing soaking cycle when the soaking time reaches a set value of the soaking time, and counting the soaking times;
and when the time of single soaking reaches a set value, replenishing water to the ultrafiltration membrane pool, and backwashing.
Preferably, the ultrafiltration membrane pool is replenished with water, and the step of backwashing comprises the following steps:
controlling an ultrafiltration cleaning water inlet valve to supply water to the ultrafiltration membrane tank, obtaining a soaking liquid level parameter value, and controlling a backwashing pump to backwash a filter membrane of the ultrafiltration membrane tank of the ultrafiltration equipment for 3 times when the soaking liquid level value reaches a set value of the soaking liquid level.
Preferably, the step of dosing the ultrafiltration membrane tank of the apparatus comprises:
setting the type of medicine to be citric acid and sodium hypochlorite in sequence;
and controlling a medicine adding system to add medicine into an ultrafiltration membrane pool of the ultrafiltration equipment when the maintenance and cleaning time of the ultrafiltration equipment reaches the maintenance and cleaning period of the ultrafiltration equipment according to the set cleaning time.
Compared with the prior art, the sequential control method for ultrafiltration water treatment provided by the invention has the beneficial effects that:
1. the invention has simple structure and convenient use.
2. According to the invention, backwashing queuing is carried out on each ultrafiltration device according to the time length of ultrafiltration completion of each ultrafiltration device, so that the ultrafiltration devices completing the ultrafiltration time are backwashed first, and thus, backwashing of each ultrafiltration device is carried out in sequence, the production efficiency is improved, and usage conflict is prevented.
Drawings
FIG. 1 is a control block diagram of the present invention;
FIG. 2 is a flow chart of the overall process of the present invention.
Detailed Description
An embodiment of the present invention will be described in detail with reference to fig. 1 to 2, but it should be understood that the scope of the present invention is not limited by the embodiment.
Example 1
As shown in FIG. 1, the present invention provides a sequential control method of ultrafiltration water treatment, comprising the following steps:
in the ultrafiltration process, acquiring a liquid level parameter value I of an ultrafiltration membrane pool in real time, controlling corresponding ultrafiltration equipment to finish ultrafiltration when the liquid level parameter value I reaches a liquid level set value required by each ultrafiltration equipment and entering backwashing, and simultaneously recording the time point of finishing ultrafiltration of each ultrafiltration equipment; queuing the ultrafiltration devices according to the sequence of the time points of the ultrafiltration completion of the ultrafiltration devices, and backwashing the ultrafiltration devices according to the queuing sequence.
Wherein, the step of ultrafiltration of the ultrafiltration apparatus comprises: the ultrafiltration inlet valve is opened, water in the ultrafiltration water distribution channel is injected into an ultrafiltration membrane pool of the ultrafiltration equipment, a flow meter on a pipeline communicated between the ultrafiltration water distribution channel and the ultrafiltration membrane pool acquires whether water is injected into the ultrafiltration membrane pool of each ultrafiltration equipment in real time, and when the ultrafiltration membrane pool is detected to have water injected, a liquid level parameter value II of each ultrafiltration membrane pool is acquired; when the detected liquid level parameter value II of each ultrafiltration membrane pool reaches a liquid level set value required by ultrafiltration, setting ultrafiltration time of each ultrafiltration device, carrying out ultrafiltration on water in the ultrafiltration membrane pool, and generating water, controlling an ultrafiltration water generating valve to open, and controlling an ultrafiltration suction water pump to open, and pumping the ultrafiltration water into an ultrafiltration water generating tank; and controlling the ultrafiltration equipment to finish ultrafiltration until the ultrafiltration time of each ultrafiltration equipment reaches the set value of the ultrafiltration time and the liquid level parameter value I reaches the set value of the liquid level required by each equipment for entering backwashing, namely controlling the ultrafiltration water production valve to be closed, stopping the ultrafiltration suction water pump, and closing the ultrafiltration water inlet valve.
Wherein, the step of backwashing the ultrafiltration devices according to the queuing sequence comprises the following steps: setting backwashing time, controlling a backwashing pump to backwash the filter membranes of the ultrafiltration membrane tanks according to the queuing sequence of the ultrafiltration devices and the set backwashing time, and draining the ultrafiltration membrane tanks of the ultrafiltration devices after backwashing of the ultrafiltration devices is finished; and setting a cycle period of the ultrafiltration equipment from ultrafiltration to backwashing to drainage, and cleaning and maintaining the ultrafiltration equipment according to the cycle period.
Wherein, the step of draining the ultrafiltration membrane tank of each device comprises the following steps: and acquiring the backwashing finish time of each device, controlling the ultrafiltration drain valve to be opened according to the backwashing finish time, draining water into the wastewater collection tank by the ultrafiltration device, carrying out ultrafiltration next time after the drainage is finished, and backwashing the ultrafiltration membrane tank and draining the water.
Example 2
On the basis of the embodiment 1, the step of cleaning and maintaining the ultrafiltration equipment according to the cycle period comprises the following steps: setting the maintenance and cleaning time of the ultrafiltration equipment, and adding chemicals into an ultrafiltration membrane pool of the ultrafiltration equipment when the maintenance and cleaning time of the ultrafiltration equipment reaches the maintenance and cleaning set time of the ultrafiltration equipment; acquiring a soaking liquid level parameter value, starting soaking the filter membrane in the ultrafiltration membrane tank when a soaking liquid level value reaches a set value of a soaking liquid level, setting soaking cycle times and soaking time, acquiring soaking time, performing soaking cycle when the soaking time reaches the set value of the soaking time, and counting the soaking times; and when the time of single soaking reaches a set value, water is supplemented, and backwashing is carried out.
Wherein, the steps of water replenishing and backwashing comprise: controlling an ultrafiltration cleaning water pump to work, opening an ultrafiltration cleaning water inlet valve, supplementing water in an ultrafiltration cleaning water tank to an ultrafiltration membrane tank by the ultrafiltration cleaning water pump to obtain a soaking liquid level parameter value, closing the ultrafiltration cleaning water pump and the ultrafiltration cleaning water inlet valve when the soaking liquid level value reaches a set value of a soaking liquid level, and controlling a backwashing pump to backwash a filter membrane of the ultrafiltration membrane tank of the equipment for 3 times.
Wherein, the step of adding medicine to the ultrafiltration membrane pool of the equipment comprises: setting the type of medicine to be citric acid and sodium hypochlorite in sequence; and controlling a medicine adding system to add medicine into an ultrafiltration membrane pool of the ultrafiltration equipment when the maintenance and cleaning time of the ultrafiltration equipment reaches the maintenance and cleaning period of the ultrafiltration equipment according to the set cleaning time.
In summary, compared with the prior art, the sequential control method for ultrafiltration water treatment provided by the invention has the advantages that backwashing queue is carried out on each ultrafiltration device according to the time length of ultrafiltration completion of each ultrafiltration device, and the ultrafiltration devices completing the ultrafiltration time are subjected to backwashing first, so that backwashing of each ultrafiltration device is carried out in sequence, the production efficiency is improved, and usage conflict is prevented.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (7)
1. A sequential control method for ultrafiltration water treatment, characterized by comprising the following steps:
in the ultrafiltration process, acquiring a liquid level parameter value I of an ultrafiltration membrane pool, controlling corresponding ultrafiltration equipment to finish ultrafiltration when the liquid level parameter value I reaches a liquid level set value required by each ultrafiltration equipment and entering backwashing, and simultaneously recording the time point of each ultrafiltration equipment finishing ultrafiltration;
queuing the ultrafiltration devices according to the sequence of the time points of the ultrafiltration completion of the ultrafiltration devices, and backwashing the ultrafiltration devices according to the queuing sequence.
2. A sequential control method of ultrafiltration water treatment as claimed in claim 1, wherein the step of ultrafiltration by the ultrafiltration unit comprises:
acquiring whether water is injected into an ultrafiltration membrane pool of ultrafiltration equipment or not, and acquiring a liquid level parameter value II of the ultrafiltration membrane pool when the ultrafiltration membrane pool is detected to have water injection;
when the detected liquid level parameter value II of the ultrafiltration membrane pool reaches a liquid level set value required by ultrafiltration, setting ultrafiltration time of ultrafiltration equipment, and carrying out ultrafiltration on water in the ultrafiltration membrane pool;
and controlling the ultrafiltration equipment to finish ultrafiltration until the ultrafiltration time of the ultrafiltration equipment reaches the set value of the ultrafiltration time and the liquid level parameter value I reaches the set value of the liquid level required by ultrafiltration and entering backwashing.
3. A sequential control method of ultrafiltration water treatment as claimed in claim 1 wherein the step of backwashing each of the ultrafiltration devices in the order of the queue comprises:
setting backwashing time, controlling a backwashing pump to backwash the filter membrane of each ultrafiltration membrane pool according to the queuing sequence of each device and the set backwashing time, and draining the ultrafiltration membrane pool of each device after backwashing of each device is finished;
and setting a cycle period of the ultrafiltration equipment from ultrafiltration to backwashing to drainage as a cycle period of the ultrafiltration equipment, and cleaning and maintaining each ultrafiltration equipment according to the cycle period.
4. A sequential control method of ultrafiltration water treatment as claimed in claim 3, wherein the step of draining the ultrafiltration membrane tanks of each ultrafiltration unit comprises:
and acquiring the backwashing finish time of each device, and controlling the device to drain water according to the backwashing finish time.
5. A sequential control method of ultrafiltration water treatment as claimed in claim 3, wherein the step of cleaning and maintenance of the ultrafiltration apparatus on a cycle-by-cycle basis comprises:
setting maintenance and cleaning time, and adding chemicals into an ultrafiltration membrane pool of the ultrafiltration equipment when the maintenance and cleaning time of the ultrafiltration equipment reaches the maintenance and cleaning time of the ultrafiltration equipment;
obtaining the parameter value of the soaking liquid level, starting to soak the filter membrane of the ultrafiltration membrane tank when the value of the soaking liquid level reaches the set value of the soaking liquid level,
setting the soaking cycle times and the soaking time, acquiring the soaking time, performing soaking cycle when the soaking time reaches a set value of the soaking time, and counting the soaking times;
and when the time of single soaking reaches a set value, replenishing water to the ultrafiltration membrane pool, and backwashing.
6. The sequential control method for ultrafiltration water treatment of claim 4 wherein the step of replenishing the ultrafiltration membrane tank with water and backwashing comprises:
controlling an ultrafiltration cleaning water inlet valve to supply water to the ultrafiltration membrane tank, obtaining a soaking liquid level parameter value, and controlling a backwashing pump to backwash a filter membrane of the ultrafiltration membrane tank of the ultrafiltration equipment for 3 times when the soaking liquid level value reaches a set value of the soaking liquid level.
7. A sequential control method of ultrafiltration water treatment as claimed in claim 4 wherein the step of dosing the ultrafiltration membrane basin of the apparatus comprises:
setting the type of medicine to be citric acid and sodium hypochlorite in sequence;
and controlling a medicine adding system to add medicine into an ultrafiltration membrane pool of the ultrafiltration equipment when the maintenance and cleaning time of the ultrafiltration equipment reaches the maintenance and cleaning period of the ultrafiltration equipment according to the set cleaning time.
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| CN202110450317.5A CN113181773A (en) | 2021-04-25 | 2021-04-25 | Sequential control method for ultrafiltration water treatment |
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| CN202110450317.5A CN113181773A (en) | 2021-04-25 | 2021-04-25 | Sequential control method for ultrafiltration water treatment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001286739A (en) * | 2000-04-05 | 2001-10-16 | Kurita Water Ind Ltd | Membrane-soaked solid-liquid separation device and method therefor |
| CN103055704A (en) * | 2013-01-07 | 2013-04-24 | 山西太钢不锈钢股份有限公司 | Regeneration method of performance of immersion-type ultrafiltration membrane used in reclaimed water recycling |
| CN103676864A (en) * | 2013-12-04 | 2014-03-26 | 南京中电环保股份有限公司 | Intelligent control system of sea water desalination hyperfiltration reverse osmosis device |
| CN207079035U (en) * | 2017-06-27 | 2018-03-09 | 天津海派特环保科技有限公司 | A kind of immersion ultrafiltration apparatus |
| CN108686519A (en) * | 2018-08-16 | 2018-10-23 | 南京化学工业园热电有限公司 | A kind of back-washing method of ultrafiltration apparatus |
-
2021
- 2021-04-25 CN CN202110450317.5A patent/CN113181773A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001286739A (en) * | 2000-04-05 | 2001-10-16 | Kurita Water Ind Ltd | Membrane-soaked solid-liquid separation device and method therefor |
| CN103055704A (en) * | 2013-01-07 | 2013-04-24 | 山西太钢不锈钢股份有限公司 | Regeneration method of performance of immersion-type ultrafiltration membrane used in reclaimed water recycling |
| CN103676864A (en) * | 2013-12-04 | 2014-03-26 | 南京中电环保股份有限公司 | Intelligent control system of sea water desalination hyperfiltration reverse osmosis device |
| CN207079035U (en) * | 2017-06-27 | 2018-03-09 | 天津海派特环保科技有限公司 | A kind of immersion ultrafiltration apparatus |
| CN108686519A (en) * | 2018-08-16 | 2018-10-23 | 南京化学工业园热电有限公司 | A kind of back-washing method of ultrafiltration apparatus |
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Application publication date: 20210730 |
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