WO2016103165A2 - Procédé de traitement d'eau destiné à être utilisé sur une embarcation, et appareil à cet effet - Google Patents

Procédé de traitement d'eau destiné à être utilisé sur une embarcation, et appareil à cet effet Download PDF

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Publication number
WO2016103165A2
WO2016103165A2 PCT/IB2015/059860 IB2015059860W WO2016103165A2 WO 2016103165 A2 WO2016103165 A2 WO 2016103165A2 IB 2015059860 W IB2015059860 W IB 2015059860W WO 2016103165 A2 WO2016103165 A2 WO 2016103165A2
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WO
WIPO (PCT)
Prior art keywords
water
treatment duct
passageway
treatment
duct
Prior art date
Application number
PCT/IB2015/059860
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English (en)
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WO2016103165A3 (fr
Inventor
Paolo MUMOLO
Original Assignee
Tekno Sistemi Di Paolo Mumolo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tekno Sistemi Di Paolo Mumolo filed Critical Tekno Sistemi Di Paolo Mumolo
Priority to EP15841049.8A priority Critical patent/EP3245161A2/fr
Publication of WO2016103165A2 publication Critical patent/WO2016103165A2/fr
Publication of WO2016103165A3 publication Critical patent/WO2016103165A3/fr

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Classifications

    • 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
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • C02F1/487—Treatment of water, waste water, or sewage with magnetic or electric fields using high frequency electromagnetic fields, e.g. pulsed electromagnetic fields
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/4602—Treatment of water, waste water, or sewage by electrochemical methods for prevention or elimination of deposits
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02—Non-contaminated water, e.g. for industrial water supply
    • C02F2103/023—Water in cooling circuits
    • 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
    • C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention

Definitions

  • the present invention relates to a method for treating marine water, i.e. a water used as sanitary water, cooling water etc,, on board of watererafts, in particular, in order to prevent or reduce the formation of deposits such as limestone, salt or biological deposits in equipment, reservoirs and ducts.
  • the invention also relates to a device for carrying out such a method.
  • Sanitary water is normally taken from wharf water that is available In the harbours, which is stored for a very long time in respective shore tanks, and therefore normally contains suspended and more or less aggregated limestone matter, mainly in the form of Calcite.
  • This water also contains factors for proliferating algae and microflora, which is promoted by Calcite porosities. In these conditions, performance-reducing deposits can form within ship's equipment and ducts.
  • Engines are cooled by a refrigerant fluid such as water, an anti-icing solution, a diathermic oil, which flows within a closed cooling circuit and Is In turn cooled in a heat exchanger exploiting water pumped from the sea and returned to if by ah open circuit, as long as the engines are working.
  • a refrigerant fluid such as water, an anti-icing solution, a diathermic oil
  • Sediments normally salt, limestone and biological sediments
  • these events are particularly frequent on hot surfaces.
  • These sediments reduce heat exchange efficiency, and require frequent maintenance or expensive extra-sizing of the heat exchange surfaces. In any case, an efficiency decrease or an engine failure may occur, if the heat exchange is poor.
  • the sediments preferably form when the engine is turned off along with the seawater circulation pump, since the water remains in contact with a surface that is at a high temperature.
  • WO2013050870A1 describes a chamber through which water flows, equipped with walls that are associated with longitudinal plates forming a condenser.
  • An oscillator applies a variable voltage to the plates, so that a variable electric field is formed through the water, which has the role of a
  • an elongated electrode is made within a dielectric sleeve that is in turn arranged inside a chamber where water flows. Out of the dielectric sleeve, the water is caused to flow in turbulent conditions due to spiral elements and wings arranged around the sleeve.
  • a ground electrode is mounted to the walls of the chamber. The external wall of the dielectric sleeve is electrically charged by causing inorganic particles in the water flow to coalesce, and by forming solid aggregates that do not give rise to encrustations, and that can be easily filtered away. If a high voltage, i.e.
  • US2010/0297213 describes a method and a device for sterilizing a liquid contained in bottles.
  • the device comprises a duct along which the hermetically closed bottles are conveyed by a carrier liquid, and a portion of which has two electrodes mounted to the inner walls opposite to each other, so as to form an alternating electric field pulse distributor.
  • WO2013/07085 describes a device for treating the water fed to the ballast reservoir of a watercraft.
  • the device comprises filtering, sweetening and UV-irradiating portions.
  • the sweetening portion comprises a tube, along the path of the water to be treated, on which a winding is arranged that conveys an alternating current, in order to form variable magnetic field inside, the alternating current consisting of a train of square pulses whose frequency is caused to variate between 0.5 and 50 kHz.
  • a method for treating an amount of a raw liquid, in particular a raw liquid comprising fresh or salt water, and containing a compound as a solute that is arranged to form an encrusting deposit, i.e. to settle or sediment in a compact and adhesive form, such as Calcium carbonate in the form of Calcite, for use on a watercraft, as well as by the ship's apparatus according to claim 16.
  • a raw liquid in particular a raw liquid comprising fresh or salt water
  • a compound as a solute that is arranged to form an encrusting deposit, i.e. to settle or sediment in a compact and adhesive form, such as Calcium carbonate in the form of Calcite, for use on a watercraft, as well as by the ship's apparatus according to claim 16.
  • the method provides: prearranging a treatment duct with a flow section that has a predetermined transversal dimension, along a transversal direction of the treatment duct; conveying the raw liquid into the treatment duct, where a liquid under treatment is formed that flows at a predetermined speed within treatment duct;
  • the alternating electric field having an intensity alternating between a maximum value and a minimum value, at a predetermined frequency, and having substantially the same field direction as the transversal direction of the treatment duct, wherein the transversal dimension and/or the speed are selected in such a way that the liquid under treatment has a residence time longer than 0.1 seconds within the treatment duct,
  • the frequency is set between 5 kHz and 5 kHz;
  • At least the maximum intensity value is set between 1 kV and 5 kV per centimetre of the transversal dimension of the treatment duct.
  • a marine plant for treating and using such a raw liquid comprises a means for carrying out the above-mentioned method steps, as they are described more in detail hereinafter.
  • an apparatus for treating an amount of a raw liquid comprising water, as defined by claim 20.
  • a method for reducing the formation of encrusting deposits on a heat exchange surface of a heat exchanger (37) associated with an apparatus (4) on board of a watercraft (50).
  • the amount of liquid is turned into a corresponding amount of treated liquid in which the solute can interact with the liquid so as to form a non-encrusting solid, in other words a solid that is not prone to deposit and/or to adhere on a surface with which the treated liquid comes into contact.
  • the method and the apparatus of the invention make it possible to transform a wide range of compounds, which are normally present in the sanitary or technical water provided to a watercraft as a dissolved but settleable matter, or as a suspended precipitate, into a form that is not settleable and/or that can be easily flushed away by water and/or can be easily filtered.
  • Calcium carbonate which is mainly present as Calcite, i.e. a settleable crystalline form, is converted into a non-settleable form such as Aragonite.
  • FIG. 1 diagrammatically shows a generic fresh or salt water treatment circuit for a watercraft and, along with Figs. 2-4, clarifies the principles of the method according to the invention
  • Fig. 6 diagrammatically shows an exemplary embodiment of the apparatus and of the method of Fig. 5, in which an on-board storage of treated sanitary water is provided;
  • Figs. 8 and 9 refer to exemplary specific embodiments of the method and of the apparatus of Fig. 7, providing a purging treatment a portion of the secondary cooling circuit with treated water, according to the invention;
  • Fig. 10 is an exemplary embodiment of what is shown in Fig. 9, in which only the purging treatment is present;
  • Fig. 10' relates to a method and to an apparatus for purging a portion of the secondary cooling circuit of a ship's equipment with treated water, in particular with a water that is desalinated on board of the watercraft;
  • Fig. 1 1 is a longitudinal sectional view of a treatment device comprising the treatment duct;
  • Fig. 12 is an elevational front view of the device of Fig. 11 ;
  • Fig. 13 is an exploded view of the device of Fig. 1 1 ;
  • Figs. 14 and 15 are SEM images of the dry matter left after evaporating at
  • Figs. 16 and 17 are SEM images of the dry matter of a treated water sample 10 days after the treatment;
  • Figs. 18 and 19 are images as above 20 days after the treatment
  • Figs. 20 and 21 are images as above 30 days after the treatment
  • Figs. 22 and 23 are SEM images of the dry matter left after evaporating at 90° a sample of a raw aqueduct water, as such and after different particular treatment conditions, respectively.
  • Raw liquid 1 can comprise fresh or salt water, and contains a solute adapted to form an encrusting deposit, i.e. a deposit settleable in an aggregated compact form that sticks to a surface with which the liquid comes into contact.
  • the solute can be Calcium carbonate, which form compact limestone deposits, in the form of Calcite, on these surfaces.
  • the formation of such deposits occurs, in particular, in case of water that becomes stagnant and evaporates within a duct, a reservoir, a user equipment in general, especially if it becomes stagnant on a hot surface.
  • the method provides prearranging a treatment duct 10, 10' that has a flow section 1 1 with a transversal dimension D, according to an own transversal direction (Figs. 2-2"), and conveying raw liquid 1 into treatment duct 10,10', so that liquid under treatment 2 flows through duct 10,10' at a predetermined speed v.
  • An alternating electric field E which is substantially parallel to the transversal direction of treatment duct 10,10', is imposed within treatment duct 10,10', by an alternating voltage generator 18.
  • the treatment duct can be a ring duct in which the electric field has a radial direction in substantially any cross section of duct 10.
  • the electric field can be formed between an electrode 12, electrically insulated with respect to the inside of duct 10, preferably arranged co-axially to duct 10, and a side wall 13 of duct 0, in the form of a condenser where water under treatment 2 is the dielectric between electrodes 12,13.
  • Voltage generator 18 may have the poles 18', 18" electrically connected with electrode 12 and with side wall 13, in this case a metal wall, respectively. In an exemplary embodiment, not shown, voltage generator 18 can have one pole only 18', 18" connected to electrode or antenna 12.
  • Treatment duct 10 may also have a different form, for example one in which electrode 10 is arranged proximate to a first portion of side wall 13, while a second portion of side wall 13, insulated from the first portion, is an electrode of the capacitive system.
  • the treatment duct can be an externally and internally insulated multilayer duct 10', as shown in Fig. 2"', in which wall 13 includes an intermediate layer 26 of a conductive material, in particular of a metal such as aluminium, and two outer 25 and inner 27 coating layers made of an insulating material, for example of a plastic material such as polyethylene, in particular crosslinked polyethylene. Due to the cheap availability of this kind of ducts, the use of multilayer tube 13 to provide treatment duct 10' reduces the costs of an apparatus for treating encrusting raw liquid 1 , while giving a maximum guarantee of insulation of the intermediate layer of conductive material 26 between two outer 25 and inner 27 coating layers.
  • Electrodes 12 and 13 can be connected to respective poles of a voltage E generator of known type, not shown, so that electric field E has an intensity alternating between an intensity maximum E 1 and an intensity minimum E2, at a predetermined frequency f set between 5 kHz and 15 kHz, as diagrammatically shown in Fig. 4.
  • the transversal dimension of the duct in the shown case, the difference between the inner radius of duct 10 and the outer radius of coated electrode 12, is selected in such a way that, if the flowrate of raw liquid 1 to be treated is known, liquid under treatment 2 travels at a speed v so as to have a residence time longer than 0.1 seconds in treatment duct 10.
  • the intensity E of electric field E in particular the maximum and/or minimum value E 1 ,E2, are selected according to transversal dimension D, i.e. according to the distance between two electrodes 12 and 13, in this case between central coated antenna or electrode 12 and the inner face of external wall 13 of treatment duct 10.
  • at least intensity maximum E 1 has an intensity value set between 1 kV and 5 kV per centimetre of transversal dimension D, i.e. the quantity E 1 /D is set between 1 kV/cm and 5 kV/cm.
  • multilayer duct of Figs. 2', 2" and 2"' can refer to the treatment of any calcareous water, also out of a marine environment, and with the electric fields as defined above, or even different from them.
  • the raw liquid to be treated is a sanitary water 1 stored on board of the watercraft.
  • the ship's sanitary water as often occurs, can be obtained from wharf water, therefore it can contain, besides Calcium carbonate, a potentially settleable organic material such as algae, to which the porosities of already compactly deposited limestone can offer a surface where it can more easily deposit.
  • treatment duct 10 is located upstream of storage reservoir 21 and downstream of the possible wharf water intake nozzle 24 to form a storage of treated sanitary water 3 in reservoir 21 , for a successful use within an estimated decay time of the treated sanitary water, for example within about 15 days.
  • the raw liquid to be treated is water 1 taken from a navigable water body 80 where watercraft 50 is located, which can be used as utility water 3 on board of watercraft 50, for example in an equipment 4 on board of watercraft 50, typically as cooling water 3 for equipment 4.
  • Raw water 1 taken from navigable water body 80 can be, for instance, salt water, in particular, seawater.
  • the user device can be a heat exchanger 37 for cooling an equipment 4 of watercraft 50.
  • the equipment can be an engine 4 for moving watercraft 50, or also a refrigerating machine, not shown, of an air-conditioning or refrigeration apparatus of an environment of watercraft 50.
  • the step of conveying can be carried out by a circulation pump 35 that defines a suction duct 34 and a delivery duct 36 of supply circuit 30.
  • Pump 35 and/or exchanger 37 can be integrated devices of engine 4.
  • the method when equipment 4 is shut down, the method provides causing an amount of purging water 5/6 to flow at a prefixed flowrate, and during a predetermined purge time, through a portion of utility water supply circuit 30 comprising treatment duct 10 and, downstream of it, first passageway 38 of heat exchanger 37.
  • the amount of supplied water i.e. the flowrate and the purge time, are selected so as to substantially purge at least the water that is present in first passageway 38.
  • a control unit of equipment 4 is provided, not shown, in particular of engine 4, that is configured for receiving a shut-off signal of equipment 4 and/or pump 35.
  • the control unit is also configured for generating the switch signal from the first to the second passageway, and for turning off engine 4 and/or pump 35 after a predetermined delay time, preferably restoring the first passageway, so that during this delay time treatment duct 10 and passageway 38 of the exchanger receive raw purging water 5 from source 22, for example by the suction of pump 35.
  • the step of purging can be carried out manually by an operator, i.e. without using a control unit as described above, and directly operating in-line feeding device 33 and pump 35, or engine 4, by switching in-line feeding device 33 from the first to the second passageway in advance before switching off pump 35 and/or engine 4, and then by still manually switching device 33 back to the first passageway, if required.
  • treated water 3 is injected, during a predetermined time, when the flowrate of utility water 7 flowing within supply circuit 30 decreases below a predetermined minimum value, in such a way that treated water 3 dilutes and/or purges utility water 7 away from first passageway 38 of exchanger 37.
  • the apparatus of watercraft 50 indirectly cooled by salt water, can be an engine 4 for moving watercraft 50, and the step of purging is carried out when engine 4 is turned off.
  • a supply circuit 30 is shown that does not have an own treatment duct 10, but that have instead an injection connection for injecting treated utility water 3 into the suction duct or into the delivery duct, or in any case upstream/downstream of pump 35.
  • the step of purging is advantageously iterated according to prefixed time intervals, preferably regular time intervals not exceeding the decay time of the treatment to which raw utility water 1 is subjected in order to be turned into treated utility water 3.
  • the iterative step of purging can be carried out manually by an operator, according to the above-indicated time intervals.
  • a control unit can be provided that is configured for detecting the condition of equipment 4 and/or pump 35, by a conventional means, in order to assess how long a non-operation condition is lasting and in order to carry out the step of purging passageway 38 of exchanger 37 with treated utility water 3, during a prefixed purge time, and every predetermined time interval, which should not be longer than an estimated or measured decay time of treated utility water 3.
  • Fig. 10' relates to a method, according to another aspect of the invention, for purging a portion of a utility water supply circuit 30 comprising first passageway 38 of heat exchanger 37, as shown in Fig. 9 and 10, with treated water 9.
  • treated water 9 is obtained by water 8 taken from water body 80 where watercraft 50 is located, in particular the treated water can be desalinated water 9 obtained by causing seawater 8 to flow through a desalter unit 62 installed on board of watercraft 50.
  • the diagrammatical view in Fig. 10' is useful for watercrafts that are equipped with a desalter unit and, therefore, do not need wharf water to cope with ship's water requirements.
  • the treated water can be stored within a storage reservoir 61 , for example an autoclave, from which an amount of water can be withdrawn and selectively sent to the portion of supply circuit 30, normally, besides further user devices 69.
  • a storage reservoir 61 for example an autoclave
  • the mode of causing treated water 9 to flow, the features of equipment 4, of heat exchanger 37 and of supply circuit 30 can be the same as described with reference to Figs. 7-10, apart from the presence of treatment duct 10.
  • a treatment duct 10 of the previously described type can be mounted along the feeding duct of treated water 9, in order to supply circuit 30. This is useful, in particular, if the desalter unit of a given type cannot satisfactorily remove the water hardness, in particular the amount of Calcium carbonate contained therein.
  • the purging step by treated water is advantageously started upon receiving a signal from a flow-switch sensor 93 installed along suction duct 34 or, preferably, along delivery duct 36, with respect to circulation pump 35.
  • a low flowrate signal is used for this starting. This way, a water flow is assured in heat exchanger 37 even if an out-of-service condition of circulation pump 35 occurs that cannot be electrically detected and signalled, for instance, a failure of the impeller, so preventing engine 4 from being damaged.
  • a treatment device 60 that can be advantageously used for carrying out the method according to the invention, as confirmed by the example given hereinafter.
  • Device 60 comprises a ring duct and an electric field generator within the ring duct.
  • Treatment duct 10 is radially defined by a tubular wall 13, in this case a cylindrical wall, of inner diameter di , by an electrically insulated electrode 12 arranged within tubular wall 13, in this case coaxially arranged with respect to it, and longitudinally defined, for a length L, by a couple of end supports 14.
  • Insulated electrode 12 comprises a metal central core 12a, typically in the form of a round bar, coated by a layer 12b of a sealing material such as a resin, of outer diameter d2, in order to prevent air from being occluded, and by a layer 12c of an electrically insulating material, of outer diameter d3, for example PTFE, while tubular wall 13 can be made of a metal such as aluminium.
  • a metal central core 12a typically in the form of a round bar, coated by a layer 12b of a sealing material such as a resin, of outer diameter d2, in order to prevent air from being occluded, and by a layer 12c of an electrically insulating material, of outer diameter d3, for example PTFE, while tubular wall 13 can be made of a metal such as aluminium.
  • Insulated electrode 12 and tubular wall 13 are connected at respective ends with insulating supports 14, in this case, by a screw-threaded joint and by a fixed joint, respectively.
  • Sealing means such as O-rings 15a and 15b are preferably arranged between each insulating support 14 and insulated electrode 12 and tubular duct 13, respectively.
  • each end of treatment device 60 is equipped with a plug 17 comprising a first passageway 17a, i.e. an inlet passageway or an outlet passageway, for the fluid to be treated / the treated fluid.
  • First passageway 17a can be made, for instance, with a preferably screw-threaded connection 17b arranged within a longitudinal hole of each plug 17.
  • inner diameter d 1 of treatment duct 10 58 mm, obtainable from a ND 50 pipe, outer diameter 60.2 mm;
  • diameter d 2 of coated core 12' of electrode 12 8 mm;
  • outer diameter d 3 of insulated electrode 12 12 mm;
  • the treated water has been then evaporated and analysed in the same way ten days later (Figs. 16.17), twenty days later (Figs. 18,19) and thirty days later (Figs. 20,21 ), which revealed the stability of the treatment, shown by the presence of Aragonite crystals in the dry matter until twenty days later (Figs. 18,19) and then again a portion of Calcite thirty days later (Figs. 18,19), which makes it possible to establish the treated water decay time d.
  • Figs. 22 and 23 show the presence of Aragonite crystals in dry matter samples obtained by both single-pole and double-poles devices, according to the diagrams of Figs. 2' and 2", respectively. Even in this case, a strong prevalence of Aragonite crystals was shown.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

L'invention concerne un procédé de traitement d'une quantité d'un liquide brut (1) à utiliser sur une embarcation, habituellement de l'eau douce ou salée, contenant un soluté adapté à former un dépôt incrustant, tel que du carbonate de calcium sous la forme de calcite, consistant à agencer préalablement un conduit de traitement (10) comprenant une section d'écoulement (11) qui présente une dimension transversale prédéterminée (D) le long d'une direction transversale du conduit de traitement, à transporter le liquide brut dans le conduit de traitement, formant ainsi un liquide en cours de traitement (2) qui s'écoule à une vitesse prédéterminée (v), à former dans le conduit de traitement un champ électrique alternatif (E) présentant une intensité alternant entre des valeurs maximale et minimale, à une fréquence prédéterminée, et présentant sensiblement la même direction de champ que la direction transversale du conduit de traitement, la dimension transversale et/ou la vitesse étant sélectionnées de telle sorte que le liquide en cours de traitement présente un temps de séjour plus long que 0,1 seconde à l'intérieur du conduit de traitement, la fréquence étant réglée entre 5 et 15 kHz, au moins la valeur d'intensité maximale étant réglée entre 1 et 5 kV par centimètre de la dimension transversale du conduit de traitement. De cette manière, le liquide brut est transformé de manière à interagir avec ledit soluté pour former un solide non-incrustant, par exemple CaCO3 sous la forme d'Aragonite, ce qui permet de confiner ou d'éliminer les dépôts d'incrustation problématiques, qui pourraient réduire l'efficacité et raccourcir la durée de vie utile d'un tel équipement de navire en tant qu'utilisateurs d'eau sanitaire et les échangeurs de chaleur à l'eau de mer, et qui pourraient augmenter les coûts de maintenance associés.
PCT/IB2015/059860 2014-12-21 2015-12-21 Procédé de traitement d'eau destiné à être utilisé sur une embarcation, et appareil à cet effet WO2016103165A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15841049.8A EP3245161A2 (fr) 2014-12-21 2015-12-21 Procédé de traitement d'eau destiné à être utilisé sur une embarcation, et appareil à cet effet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPI2014A000094 2014-12-21
ITPI20140094 2014-12-21

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WO2016103165A2 true WO2016103165A2 (fr) 2016-06-30
WO2016103165A3 WO2016103165A3 (fr) 2016-08-18

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304302A (en) * 1990-04-06 1994-04-19 Gerdi Bossert Apparatus for treating a liquid with alternating magnetic and electric fields
WO2003040043A1 (fr) * 2001-10-23 2003-05-15 Drexel University Procede et appareil de traitement de l'eau
JP2003260495A (ja) * 2002-03-08 2003-09-16 Kurita Water Ind Ltd スケール付着防止方法
WO2008114116A1 (fr) * 2007-03-21 2008-09-25 Opus Industry Sa Procede et dispositif pour la sterilisation d'un liquide
ITVA20110029A1 (it) * 2011-10-06 2013-04-07 Marcelletti Mauro Apparato per l'attivazione dell'acqua, delle soluzioni acquose e dei liquidi non acquosi tramite l'applicazione di un campo di quasi-particelle
WO2013070085A1 (fr) * 2011-11-07 2013-05-16 Timbernor Ou Système pour nettoyer de l'eau de ballast

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WO2016103165A3 (fr) 2016-08-18

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