WO2022181687A1 - Roシステムの制御方法 - Google Patents
Roシステムの制御方法 Download PDFInfo
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- WO2022181687A1 WO2022181687A1 PCT/JP2022/007595 JP2022007595W WO2022181687A1 WO 2022181687 A1 WO2022181687 A1 WO 2022181687A1 JP 2022007595 W JP2022007595 W JP 2022007595W WO 2022181687 A1 WO2022181687 A1 WO 2022181687A1
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000012528 membrane Substances 0.000 claims abstract description 56
- 238000012545 processing Methods 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 230000008569 process Effects 0.000 claims description 17
- 238000011084 recovery Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 abstract description 11
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000001223 reverse osmosis Methods 0.000 description 60
- 238000004140 cleaning Methods 0.000 description 16
- 239000012466 permeate Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000012267 brine Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005111 flow chemistry technique Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Classifications
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- 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
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/12—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
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
- B01D61/026—Reverse osmosis; Hyperfiltration comprising multiple reverse osmosis steps
-
- 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
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- 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
-
- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/70—Control means using a programmable logic controller [PLC] or a computer
-
- 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
- B01D2321/20—By influencing the flow
-
- 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
- B01D2321/40—Automatic control of cleaning processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
Definitions
- the present invention relates to a control method for an RO system that treats water with reverse osmosis, and more particularly to a control method for an RO system having multiple RO devices installed in parallel.
- physical fouling such as SS fouling due to suspended solids (SS) also occurs in RO membranes.
- Patent Document 1 discloses a method of blowing concentrated wastewater generated in a reverse osmosis membrane portion during the process of filtering water to be treated every accumulated water passage time. is described.
- Patent Document 2 describes setting the order of priority of the filtration devices to be operated among a plurality of filtration devices arranged in parallel based on the degree of membrane clogging. Note that paragraph 0064 of Patent Document 2 describes that the membrane is washed with air.
- the present invention provides a control method for an RO system that can reduce power consumption and the amount of waste by reducing the amount of chemicals used and the number of times membranes are replaced, as well as enabling stable operation and contributing to energy conservation.
- the task is to
- An RO system control method of the present invention includes a plurality of RO devices arranged in parallel and a control unit for controlling start/stop processing including operation processing and stop processing of the RO devices. It is characterized in that control is performed so that the number of times of starting and stopping increases as the RO device recovers the processing capacity more easily.
- the history of start/stop processing of each RO device is stored, and the priority order of the RO devices to be operated is determined based on the history of start/stop processing.
- the history of membrane treatment performance of each RO device is stored in association with the history of start/stop processing of each RO device, and based on the history of start/stop processing and the history of membrane treatment performance, The degree of recovery of the membrane treatment performance expected by the start/stop process is estimated for each RO device, and the RO device with a higher recovery degree expected by the start/stop process is given higher priority.
- the outlet pressure or power consumption of a water supply pump that supplies water to the RO device is measured, and the RO device with the higher outlet pressure or higher power consumption is given higher priority.
- the number of times of the starting/stopping process during driving is determined based on the estimated result of the effectiveness of starting/stopping, and the number of times of starting/stopping in a predetermined time period is set so as to increase the effect versus the number of times of starting/stopping.
- the number of times of the start/stop processing during driving is determined based on the determined estimation result of the effectiveness of start/stop, and the number of times of start/stop in a predetermined time period is determined so as to increase the effect versus the number of times of start/stop.
- the current membrane processing performance of each RO device is measured, and the priority of the RO devices is determined based on the current membrane processing performance.
- a program according to one aspect of the present invention is a program for controlling a water treatment system having a plurality of RO devices arranged side by side, comprising a control command for controlling start/stop processing including operation processing and stop processing of the RO devices; causing a computer to execute a storage command for storing the history of start/stop processing of each RO device, and a priority order determination command for determining the priority order of the RO devices to be operated based on the history of the start/stop processing; It is a control program for a water treatment system.
- the present invention it is possible to ensure the processing efficiency of the RO system with a simple configuration.
- the present invention removes fouling by stopping and operating the RO membrane device or adjusting the flow rate of each flow path without chemical cleaning. It is possible to remove fouling effectively, and the structure is simple.
- FIG. 1 is a system diagram of an RO system to which a control method according to an embodiment is applied;
- FIG. 4 is a flow chart showing the flow of judgment based on functional blocks;
- 4 is a flow chart showing the flow of judgment based on functional blocks;
- 4 is a flow chart showing the flow of judgment based on functional blocks;
- FIG. 1 is a system diagram of an RO system to which the control method according to the embodiment is applied.
- Raw water is supplied from the raw water pipe 1 to a plurality of (four in this embodiment) treatment systems (hereinafter sometimes referred to as systems) A, B, C, and D for RO treatment.
- systems hereinafter sometimes referred to as systems
- raw water is sent by pipes 11 to 14 connected to the raw water pipe 1, pressurized by pumps 21 to 24, and then supplied to cross flow type RO devices 41 to 44 by water supply pipes 31 to 34. be done.
- the permeated water that has permeated the RO membranes of the RO devices 41-44 is taken out as permeated water from the permeated water pipes 51-54 via a collective permeated water pipe 55.
- FIG. Part of the permeated water is sent to the washing water tank 57 via a pipe 56 branched from the pipe 55 and stored therein.
- the water in the cleaning water tank 57 can be supplied to the water supply pipes 31 to 34 through a cleaning line 59 having a cleaning pump 58 .
- the concentrated water (brine) of the RO devices 41-44 is taken out as concentrated water from the concentrated water pipes 61-64 via the collective concentrated water pipe 65.
- Each of the pipes 11-14 and 31-34 is provided with sensors S1 and S2 for measuring the flow rate, pressure, pH, etc.
- the pipes 51-54, 61-64 are provided with sensors S3, S4 for measuring one or more characteristics such as flow rate, pressure, electrical conductivity, and the like.
- Valves V1 and V2 are provided in pipes 51-54 and 61-64.
- Detected data from each sensor is input to the control device (not shown).
- the memory of the control device stores the operation plan data together with the control program.
- Each pump 21-24, 58 and each valve V1, V2 are controlled according to a signal from the control device.
- the RO device in addition to chemical cleaning, the RO device is stopped and restarted for a short period of time, that is, "start/stop processing" for the purpose of physically removing fouling.
- start-stop processing occurs secondary to normal water flow processing (for example, changes in the number of units in operation due to fluctuations in the permeate flow rate), so it is not necessary to stop water flow processing and chemical It is superior in that physical fouling can be removed without the use of
- the execution judgment of the start/stop process is based on whether the "membrane performance recovery effect by the start/stop process (e.g., the amount of power consumption reduction)" is 0 or more, or "the cost incurred by the start/stop process (e.g., the flushing process or the start-up of the pump increase in power consumption)”. When this condition is satisfied, it is preferable to repeat the starting/stopping process unless an abnormality in the desalinization rate is detected.
- the order of priority for operation is determined.
- the operation priority of the RO device is determined based on the history of starting and stopping performed in the operation plan.
- the operation priority is assigned so that as many starts and stops as possible are assigned to the series with the highest recovery effect.
- the time for which the operation of the RO device is stopped by the start/stop process is preferably 5 minutes or more, for example 5 to 360 minutes, but is not limited to this. If the stop time is less than 5 minutes, the effect of recovering the membrane treatment performance of the RO apparatus may not be sufficient.
- whether or not the membrane treatment performance has a recovery effect depends on the difference between the “energy required per permeate volume after start/stop (power consumption, water supply pressure)” and the “energy required per permeate volume before start/stop electric power, water supply pressure)”.
- This RO system has an operation plan determined according to the amount of water to be generated, etc., and the operation plan includes information on the number of RO devices to be operated at each point in time.
- the above control system has the following functional units.
- Control unit> By controlling valves, pumps, etc., the filtration device is controlled to start and stop.
- the starting and stopping process includes the operation of closing the channel on the permeate side and the operation of reducing the flow rate of raw water.
- ⁇ Measurement unit for measuring water supply information For example, pH, raw water pressure, raw water flow rate, etc. are measured.
- ⁇ Measurement unit for measuring membrane treatment performance For example, feed water pressure, permeate water pressure, brine pressure, feed water flow rate, permeate water flow rate, brine flow rate, water temperature, feed water conductivity, treated water conductivity, and the like are measured.
- ⁇ Acquisition unit for acquiring pump status> For example, obtain frequency, output current, output voltage, power consumption, and outlet pressure.
- ⁇ Recording unit for recording device information> For example, it stores the membrane area, the number of vessels, the configuration of the membrane, and the like.
- Membrane treatment performance for example, feedwater pressure, transmembrane pressure difference, flux
- ⁇ Calculation unit for calculating membrane treatment performance For example, the transmembrane pressure, FLUX, is calculated.
- ⁇ Power consumption estimator> When power consumption is not continuously measured, power consumption is estimated from measured values (for example, water supply pressure and water supply flow rate).
- ⁇ Fouling estimation unit Eliminate the impact of operating conditions (e.g., inlet water pressure, treated water flow rate, temperature) from the difference in treatment performance that has decreased due to continued operation from the treatment performance immediately after the most recent cleaning or membrane replacement. , the amount of change in membrane treatment performance due to fouling is calculated.
- operating conditions e.g., inlet water pressure, treated water flow rate, temperature
- the membrane treatment performance that cannot be removed by the start/stop treatment is detected by calculating the membrane treatment performance that is expected to be recovered by the start/stop treatment among the amount of change in the membrane treatment performance due to fouling.
- the number of start/stop times is determined based on the estimation result of the start/stop effectiveness estimation unit.
- the number of times of starting and stopping is determined so as to increase the effect versus the number of times of starting and stopping, which is an index of recovery efficiency. (For example, 4 times when there is no difference in the degree of recovery between 5 starts and stops and 4 starts and stops within 24 hours)
- the RO device having the high outlet pressure of the high-pressure pump acquired by the pump state acquiring unit or having a large power consumption is given higher priority.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
バルブおよびポンプ等の制御により、濾過装置の稼働および停止を制御する。
例えば、pH、原水圧力、原水流量などを計測する。
例えば、給水圧力、透過水圧力、ブライン圧力、給水流量、透過水流量、ブライン流量、水温、給水導電率、処理水導電率などを計測する。
例えば、周波数、出力電流、出力電圧、消費電力、出口圧力を取得する。
例えば、膜面積、ベッセル数、膜の構成などを記憶する。
直近の洗浄又は膜交換直後の膜処理性能(例えば、給水圧力、膜間差圧、フラックス)を記憶する。
水処理の運転計画に従って発停した履歴と、SS除去のために意図的に発停処理を行った履歴と、の両方を記憶する。
制御部から指示された優先順位の履歴を記憶する。
例えば、膜間差圧、FLUXを計算する。
消費電力が連続的に計測されていないとき、計測値(例えば、給水圧力と給水流量など)から消費電力を推定する。
直近の洗浄又は膜交換直後の処理性能から、運転を継続したことの影響で処理性能が低下した差分のうち、運転条件(例えば、入口水圧力、処理水流量、温度)による影響を排除して、ファウリングによる膜処理性能の変化量を算出する。
各RO装置に対し、発停処理で見込まれる膜処理性能の回復効果、すなわち発停有効性を推定する。RO装置によって、発停が膜処理性能の回復に有効であるかが異なるためである。
発停履歴に基づいて、今後の発停処理のタイミングを計画する。所定期間内に発停していないRO装置を発停させる。
各RO装置の発停の履歴に基づいて、発停処理を行わせるRO装置の優先順位を決定する。
本出願は、2021年2月26日付で出願された日本特許出願2021-030480に基づいており、その全体が引用により援用される。
41~44 RO装置
57 洗浄タンク
Claims (7)
- 並列された複数のRO装置と、該RO装置の稼働処理および停止処理を含む発停処理を制御する制御部とを有するROシステムの制御方法において、
発停により処理能力が回復しやすいRO装置ほど発停回数が多くなるように制御することを特徴とするROシステムの制御方法。 - 各RO装置の発停処理の履歴を記憶し、
発停処理の履歴に基づいて、稼働させる前記RO装置の優先順位を決定することを特徴とする請求項1のROシステムの制御方法。 - 各RO装置の膜処理性能の履歴を、各RO装置の発停処理の履歴と関連づけて記憶し、
前記発停処理の履歴および前記膜処理性能の履歴に基づいて、前記発停処理により見込まれる前記膜処理性能の回復度合を、前記RO装置ごとに推定し、
前記発停処理により見込まれる前記回復度合が大きい前記RO装置の優先順位を上位に決定することを特徴とする請求項2のROシステムの制御方法。 - 前記RO装置に給水する給水ポンプの出口圧力又は消費電力を計測し、
前記出口圧力又は前記消費電力が大きい前記RO装置の優先順位を上位に決定することを特徴とする請求項3のROシステムの制御方法。 - 前記発停有効性の推定結果に基づいて、駆動時における前記発停処理の回数を決定し、
発停回数対効果が高くなるように、所定時間における発停回数を決定することを特徴とする請求項3又は4のROシステムの制御方法。 - 各RO装置の現時点の膜処理性能を計測し、
現時点の膜処理性能に基づいて前記RO装置の優先順位を決定することを特徴とする請求項1乃至5のいずれかのROシステムの制御方法。 - 並設された複数のRO装置を有する水処理システムを制御するプログラムであって、
前記RO装置の稼働処理および停止処理を含む発停処理を制御する制御命令と、
各RO装置の発停処理の履歴を記憶する記憶命令と、
前記発停処理の履歴に基づいて、稼働させる前記RO装置の優先順位を決定する優先順位決定命令と、
をコンピュータに実行させる、水処理システムの制御プログラム。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN202280016864.5A CN117222468A (zh) | 2021-02-26 | 2022-02-24 | Ro系统的控制方法 |
KR1020237027634A KR20230167340A (ko) | 2021-02-26 | 2022-02-24 | Ro 시스템의 제어 방법 |
US18/277,580 US20240124333A1 (en) | 2021-02-26 | 2022-02-24 | Method for controlling ro system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2021-030480 | 2021-02-26 | ||
JP2021030480A JP7140217B2 (ja) | 2021-02-26 | 2021-02-26 | Roシステムの制御方法 |
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WO2022181687A1 true WO2022181687A1 (ja) | 2022-09-01 |
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PCT/JP2022/007595 WO2022181687A1 (ja) | 2021-02-26 | 2022-02-24 | Roシステムの制御方法 |
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US (1) | US20240124333A1 (ja) |
JP (1) | JP7140217B2 (ja) |
KR (1) | KR20230167340A (ja) |
CN (1) | CN117222468A (ja) |
TW (1) | TW202236041A (ja) |
WO (1) | WO2022181687A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000246070A (ja) * | 1999-03-02 | 2000-09-12 | Shinko Pantec Co Ltd | 膜分離装置及びその運転方法 |
JP2004216225A (ja) * | 2003-01-10 | 2004-08-05 | Ngk Insulators Ltd | 膜ろ過装置の運転方法 |
JP2010162501A (ja) * | 2009-01-16 | 2010-07-29 | Miura Co Ltd | 水質改質システムおよび水質改質方法 |
JP2016067968A (ja) * | 2014-09-26 | 2016-05-09 | 三浦工業株式会社 | 濾過システム |
CN108079791A (zh) * | 2018-01-19 | 2018-05-29 | 华北电力科学研究院有限责任公司 | 多套并列运行的反渗透系统及其启停控制方法 |
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JP4348691B2 (ja) | 2004-03-30 | 2009-10-21 | 三浦工業株式会社 | 逆浸透膜部の目詰まり防止方法 |
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2021
- 2021-02-26 JP JP2021030480A patent/JP7140217B2/ja active Active
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2022
- 2022-02-23 TW TW111106514A patent/TW202236041A/zh unknown
- 2022-02-24 WO PCT/JP2022/007595 patent/WO2022181687A1/ja active Application Filing
- 2022-02-24 US US18/277,580 patent/US20240124333A1/en active Pending
- 2022-02-24 CN CN202280016864.5A patent/CN117222468A/zh active Pending
- 2022-02-24 KR KR1020237027634A patent/KR20230167340A/ko unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000246070A (ja) * | 1999-03-02 | 2000-09-12 | Shinko Pantec Co Ltd | 膜分離装置及びその運転方法 |
JP2004216225A (ja) * | 2003-01-10 | 2004-08-05 | Ngk Insulators Ltd | 膜ろ過装置の運転方法 |
JP2010162501A (ja) * | 2009-01-16 | 2010-07-29 | Miura Co Ltd | 水質改質システムおよび水質改質方法 |
JP2016067968A (ja) * | 2014-09-26 | 2016-05-09 | 三浦工業株式会社 | 濾過システム |
CN108079791A (zh) * | 2018-01-19 | 2018-05-29 | 华北电力科学研究院有限责任公司 | 多套并列运行的反渗透系统及其启停控制方法 |
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KR20230167340A (ko) | 2023-12-08 |
JP7140217B2 (ja) | 2022-09-21 |
US20240124333A1 (en) | 2024-04-18 |
TW202236041A (zh) | 2022-09-16 |
CN117222468A (zh) | 2023-12-12 |
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