WO2017194409A1

WO2017194409A1 - Water treatment and distribution device for a farm

Info

Publication number: WO2017194409A1
Application number: PCT/EP2017/060784
Authority: WO
Inventors: Hubert CROUTELLE; Laurent Pupunat; Cyril CAILLAT
Original assignee: Waterdiam France
Priority date: 2016-05-10
Filing date: 2017-05-05
Publication date: 2017-11-16
Also published as: FR3051206A1; FR3051206B1

Abstract

The invention relates to a water treatment and distribution device for a farm, which comprises: means for pumping water to be treated contained in a source (1) such as a well or water table; a surge tank (5) in which the water to be treated is stored; means for treating all the stored water, by electrolysis using boron-doped diamond; means for distributing the treated water; the entire device being pressurised and the water treatment operating in a closed loop between the surge tank (5) and the treatment means.

Description

Water treatment and distribution device for a farm

Field of the invention

The invention relates to a device and a method for treating and distributing water, in particular water used in agriculture, for watering animals, or for irrigation plantations.

STATE OF THE ART Water is an essential nutrient that is involved in all the basic physiological functions of the animal or plant organism. However, it should be noted that water, compared to other nutrients, is consumed in much larger quantities. That's why its availability and quality are key parameters in the health and productivity of livestock and plants.

For livestock, restricting the availability of water can lead to a rapid and significant decline in livestock production, and poor water quality is often a contributing factor to lower livestock consumption. Since water is consumed in large quantities, if it is of poor quality, the risk that the contaminants it contains reach a harmful level increases. However, for example, dairy cows with a high production capacity can exceed a daily consumption of 80 to 100 liters of water per day, or even 150 liters in the case of a hot summer period.

The use of well water or groundwater for watering is a major health hazard for animals as it may contain many microbiological pathogens. Drinking with contaminated water can lead to various organic disorders (possibly to the point of death) in the animal, or reduced production or reproductive performance. Contaminants in the water can also be found in the animal products produced and thus present risks for humans (microbiological or chemical).

Standard methods of water treatment, such as filtration, ultraviolet rays, or the use of disinfectants such as chlorination, injection of ozone or hydrogen peroxide and other physico-chemical methods, do not that partially the need for treatment of drinking water and may present risks of high residual disinfectants that may cause side effects such as chlorinated by-products. A health risk persists, which can lead to different diseases in animals and plants.

FIRE I LLE OF REM PLACEM ENT (RULE 26) SUMMARY OF THE INVENTION The present invention aims to overcome the various disadvantages mentioned above, by means of a water treatment and distribution device, always fed from wells or groundwater, but allowing to avoid any over-concentration of disinfectant elements in the water, and adapted to agricultural installations by distributing water of a very good quality over a large distance, that is to say on the scale of water. a farm.

This goal is achieved through a water treatment and distribution device comprising:

means for pumping the water to be treated present in a source of the well or groundwater type;

a buffer tank in which the water to be treated is stored;

means for treating all of the stored water by boron-doped diamond electrolysis;

distribution means for the treated water;

the entire device being pressurized, the water treatment operating in a closed loop between the buffer tank and the processing means.

The main idea of this invention is to provide a complete facility, sized for a farm, that can capture water available directly on the farm, treat it by diamond electrolysis to obtain a high quality water , and distribute it at short and long distance on the farm.

Indeed, on a farm with cattle for example, the parlor can be located far from the well on the farm. Livestock are quenched, especially after milking, so high quality water must be available in the vicinity of the milking parlor.

On a farm with plantations, the fields to be irrigated can be located far from the source of water on the farm. It is therefore necessary that the treated water can be sent at long distance, while maintaining its attributes along its path towards the plantations.

The water treatment is carried out on the entire volume of water present in the buffer tank, and not on a part of the volume of water. The installation is designed to adapt to the needs of each farm, using a tank sized according to the daily water requirements, and with an electrolysis treatment adjusted according to the actual water consumption.

No salt or chemical is added to the water. In the case of the diamond electrolysis treatment, the treated water is disinfected, and is even disinfectant with a negative oxidation-reducing potential. This water is not aggressive or irritating to the skin, unlike other types of treatment, of the chlorine type, where the redox potential is positive, and the water has an irritating and aggressive behavior, especially for the skin. skin, because of its acidity. According to the various embodiments of the invention, which may be taken together or separately: said pumping means consist of at least one booster for putting and maintaining the device under pressure. This booster is suitable for pumping water from a well, or from the water table, or from any other source of water available on the farm, and send this pumped water into the tank. The latter is under a pressure of between 2 and 6 bars in order to subsequently distribute the treated water in a distribution network. filtration means are inserted between said pumping means and the buffer tank, said filtering means consisting of at least one filter, of the sand filter type if the pumped water is loaded with sand or with residues of organic matter or particles limestones. Other types of filters can be envisaged, such as cartridges, sieves, a cyclone or a pocket. The objective is to make the output of the discharged water in the buffer tank of large impurities. said processing means comprises a closed loop processing circuit comprising:

o a water inlet to be treated connected to an outlet of the buffer tank; a device for managing the water flow at the circuit inlet, of the valve type;

o means of analysis of the water before treatment by electrolysis;

an electrolyzer with boron-doped diamond electrodes;

o A treated water outlet downstream of the electrolyser and connected to an inlet of the buffer tank. said buffer tank outlet is located in the lower part of the buffer tank, while said buffer tank inlet is located in the upper part of the buffer tank. In this way, there is a permanent circulation of water within the tank. The untreated water is located at the bottom of the tank, and goes to the treatment circuit, while the treated water arrives in the upper part of the tank. the tank comprises purge means in the upper part to eliminate the gases from the electrolysis. said water analysis means consist of measurements of different parameters of the water, such as limestone level, iron content, bacteriological content, conductivity, temperature, disinfection rate, microbial load, etc. The results of these measurements are compared with threshold values, and it is then possible to define the appropriate treatment process for the water. This process consists of defining the number of treatment cycles throughout a day, and the duration of each cycle. the water treatment and distribution device comprises a control device of the processing circuit, of the programmer or clock type, so as to program treatment cycles and cycle times. Remote monitoring means of the control device may be provided, for example if a user wishes to know in real time, from his home on the farm, the remaining time of the current cycle. This will allow him to know exactly from his home when the water is ready for distribution. said treated water distribution means consist of a distribution network comprising an inlet connected to an outlet of the buffer tank, and at least one distribution point equipped with a device for controlling the flow of the treated water, of the type valve, located remote from the buffer tank, said distance being between 10m and 500m. The distribution network can be connected to the same output of the buffer tank as that used for the treatment circuit. Valves then make it possible to direct the water rather in the distribution network than in the treatment circuit. The distribution network may include a plurality of distribution points, located at different distances from the buffer tank. - The water treatment and distribution device comprises a first resonator disposed upstream of the buffer tank, and a second resonator disposed at a distribution point. A resonator is a carrier material, on which it is possible to transfer and activate vibrations, that is to say specific information about the reference material, namely water. This information consists of energetic properties. This information transfer process is therefore "vibratory syntony". This resonator then generates catalytic effects in the water that passes nearby in an adjacent pipe. Placing a first resonator upstream of the buffer tank makes it possible to generate catalytic effects in the water before its treatment, and placing a second resonator at the outlet of the distribution network makes it possible to regenerate these same catalytic effects a second time, to further improve the quality of the water leaving the installation. Other resonators can still be arranged in different places in the distribution network, so downstream of the electrolysis. Their respective locations and number depend on the distance between the reservoir and the distribution points. - The water treatment and distribution device comprises means for injecting nutrients into the buffer tank: this injection is optional, and depends on the type of operation in which the device is installed. The addition of nutrients makes it possible to obtain a richer and more nutritious water, therefore better for the animals as well as for the plants.

The invention also relates to a method for treating and dispensing water using a water treatment and dispensing device as described above, and comprising:

a first step of pumping water to be treated in a source of water of the well or groundwater type;

a step of storing the pumped water in a buffer tank;

a step of treating all the water present in the buffer tank by means of an electrolysis carried out by boron-doped diamond electrodes;

a second step of pumping treated water from the buffer tank to a distribution network, the water being pressurized at all stages.

According to the different embodiments of the invention, which can be taken together or separately:

this method comprises a step of filtering the water to be treated between the pumping step of the water to be treated and the step of storing the pumped water.

this method comprises a step of softening and / or de-ironing between the step of pumping the water to be treated and the step of storing the pumped water: in this case, the water passes through a system antilime or in a deferiser, before reaching the buffer tank.

said processing step is carried out in two phases, namely:

a first phase of pre-electrolysis of all the water stored in the buffer tank, before its distribution towards the distribution network; this first phase makes it possible to electrolyze all the water in the tank in advance, so that it is ready to be distributed.

a second phase of electrolysis of the water present in the buffer reservoir during its distribution in the distribution network: this second phase makes it possible to reinforce punctually the water treatment during its distribution. It is therefore a question of maintaining the water, so that it remains as clean as possible in the long term, and that its quality does not deteriorate between the end of the first phase and the end of its distribution.

the method comprises a step of bacteriological and chemical analysis of the water, carried out before the treatment step. It is a question of measuring the various parameters of the water, as explained previously, of the type limestone level, iron level, bacteriological content, conductivity, temperature, disinfection rate, microbial load, etc. the method comprises a step of defining the number of treatment cycles to be carried out and the duration of each cycle according to the amount of water to be treated present in the buffer tank and according to the results of the bacteriological and chemical analysis steps , this definition step taking place between the analysis step and the processing step. The quality of the water is very variable from one source to another, and from one exploitation to another for the same type of source, and still from one day to another on the same exploitation for the same source, according for example of the rainfall or different fertilizers used nearby in the soil. These analyzes thus make it possible to know the quality of the water drawn, and to then define the necessary cycles to treat it correctly and in an optimal way, according to the need of the user.

The user can use the water treatment and dispensing device as described above to dispense drinking water, for example for livestock.

It can also be used to irrigate an above-ground plantation, with recovery of irrigation water after passing over the plants to refill the empty buffer tank after irrigation. This specific use makes it possible to control the composition of the water recovered in terms of disinfection and the presence of nutrients.

He can finally use it for example to treat fish farming water. Other types of use and applications can be envisaged with such a device. In each of these cases, it is a use of the water treatment and distribution device at the scale of a farm. This type of installation must be robust, and is sized to be able to bring treated water over long distances.

Presentation of figures

The invention will be better understood, and other objects, details, features and advantages thereof will become more clearly apparent in the following detailed explanatory description of at least one embodiment of the invention given to As a purely illustrative and non-limiting example, with reference to the attached schematic drawing.

This FIG. 1 shows a device for treating and dispensing water according to the invention.

detailed description With reference to FIG. 1, the water treatment and distribution device consists of an installation capable of drawing water, of storing it, of treating it, and then of sending it to a distribution network. More concretely, the water is drawn from a source 1, which may be a lost well, or a water table, or a rainwater collector, or any other water retention zone.

The water is pumped by means of a booster 2, which returns this pressurized water to a buffer tank in order to fill it, and which also allows the water present in the buffer tank to be dispensed, if need be. using a second optional booster 8 arranged downstream of the buffer tank.

Before arriving in the buffer tank, the pumped water passes through different filters 4 in order to eliminate the large impurities.

It can also pass in a softening system, and / or in a deferizer.

These different pre-treatments are carried out in a single passage of the water, and make it possible to avoid deposits of residues and dirty particles at the bottom of the buffer tank, so that it does not become clogged in the long term. The goal is therefore to optimize the water ready for treatment.

The buffer tank 5 is sized according to the water requirements of the farm, during a day. This tank 5 can contain all the water needed for a day, or be filled several times during the day. The buffer tank 5 is not necessarily located in the vicinity of the source 1 of water.

There is no limit distance between the reservoir and the source, because in all cases, the pumping means is suitable, even for large distances or elevations, and whatever the nature of the water source .

The water stored in the buffer tank 5 is then treated via a processing circuit 1 1 operating in a closed loop.

More precisely, the stored water leaves the tank 5 via an outlet 6 of water, and enters the treatment circuit 11 via a solenoid valve 12.

The water then passes into an area 13 where it undergoes a series of analyzes whose objective is to determine its quality, and to define a suitable treatment program. It is mainly bacteriological and chemical analyzes, to know the bacterial level of the water. But other analyzes are also carried out, in order to have an overview of the various parameters characterizing the water drawn. In concrete terms, here are the types of analyzes performed:

- measurement of the hardness of the water with limestone, to know if it is necessary to activate the system of softening upstream of the tank, during its filling

measurement of the iron content, in order to know whether to activate the deferizer upstream of the tank, when filling it.

- analysis of total germs or fecal germs, in order to know the microbial load present and eliminate via the electrolysis treatment.

- measurement of the conductivity in order to adapt the configuration of the electrolyser to optimize its efficiency

- taking the temperature of the water: hot water requires more disinfection than cold water.

measurement of the redox potential of the water, in order to know its oxidative character (that is to say with a positive potential, which is the typical case of chlorinated water) or reduction (ie say with a negative potential).

measurement of the disinfectant rate: a disinfectant water has an oxidizing potential and has an irritating behavior, particularly aggressive for the skin and is rather acidic.

- etc.

These analyzes are set up on the installation, according to the degree of analytical monitoring desired by the user, on his operation.

Some measures, of the type of germ analysis, are carried out daily, whereas other measures, of the type hardness of the water, are carried out rather weekly, even monthly or annual, in order to follow the variations over a period of time more importantly, or to verify that the equipment used on the installation is in order.

These measurements are made before the start of treatment, but some of them can also be repeated after the treatment has been performed, in order to check its effectiveness, and to adjust the settings of the electrolysis treatment. The fact that the processing circuit 1 1 operates in a closed loop allows such a servocontrol.

The knowledge of the bacterial level of the water makes it possible to define the quantity of cycles and their respective duration. The water contained in the tank 5 is treated in full, and not partially, before his first use of the day. The treatment is carried out in at least one cycle. A second cycle can be started during the distribution of the water to maintain the action on the water. Then, after use, water is pumped to fill the tank 5 again as the day progresses, and the treatment continues with different cycles, especially to maintain the good quality of water throughout. the day, and thus maintain the same level of treatment. In fact, without intermediate treatment, the quality of the treated and unused water within the tank 5 can deteriorate as the day progresses, because the treatment carried out provides only a remanence of low activity in the time. It is therefore necessary to repeat the water treatment intermediately, in order to maintain the action on the water, that is to say, so that the water remains in a stable state within the reservoir, and always be ready for use. It is therefore necessary to distribute the treatment cycles throughout a day. As a result, it will sometimes be necessary to perform two short cycles at two different times of the day, rather than a single long cycle on an ad hoc basis.

For the same amount of water, the more water has a high bacterial level, the longer the treatment cycle.

Once the analyzes have been carried out and the cycles defined, the water passes into an electrolyzer 17 comprising boron-doped diamond electrodes. During a cycle, the water contained in the tank 5 passes almost completely into the electrolyser.

The configuration of the electrolyser 17 is determined according to the results of the various analyzes and measurements made beforehand, and also according to the amount of water to be treated.

In particular, are defined the number of electrolysis compartments, generally between 1 and 4, and the space separating the electrodes, generally between 1 and 5mm.

The speed of electrolysis is also defined following these results. For the same amount of water, the duration of an electrolysis can go from simple to five times. If the water is highly contaminated, the electrolysis will be slow, and conversely if the water is weakly contaminated, the electrolysis will be fast. The speed of the electrolysis is managed by a solenoid valve 16 placed upstream of the electrolyser 17, and which controls the flow of water entering the electrolyser 17. This solenoid valve 16 is controlled by a clock 14 on which are programmed the cycles, and which can be manually set or controlled by an automated control system receiving the analysis results as input and outputting instructions to the clock 14. A remote monitoring modem 15 may be associated with this clock 14, so that the user can for example remotely follow, from a local, the course of the treatment cycles. The electrolysis treatment is favorable because it allows the water to reach a low oxidation-reduction potential, between -200mV and + 600mV. It is therefore a disinfected water, even disinfectant, even if the potential is negative, thus not exhibiting an irritating or aggressive behavior for the skin as is the case with an acidic water or with a high oxidation-reducing potential.

The water leaving the electrolyser 17 is thus treated, and reinjected into the buffer tank via an inlet 7 situated in the upper part of the tank 5. The water is therefore treated without any addition of salt or any element whatsoever. This avoids the over-concentration of disinfectant elements in the water at the treatment level, and therefore any health risk.

However, it is possible to inject nutrients into the water of the buffer tank, but only for the purpose of improving the nutritional quality of the water without degrading its negative potential.

The water thus treated and present in the buffer tank 5 is then distributed on the farm via a distribution network 10. This network 10 can be connected to the buffer tank 5 via a specific tank outlet, or via the same outlet 6 tank as that used for the processing circuit 1 1 as illustrated in the single figure. In the latter case, the water will take the same starting section 9 between the outlet 6 of the tank 5 and the inlet solenoid valve 12 of the treatment circuit 1 1 which will be closed in this case. Thus, instead of entering the treatment circuit 1 1, the water will continue its way to the first distribution point 21, which may be located several meters from the buffer tank.

The distribution network may contain a plurality of distribution points (not shown). A valve 19 is always positioned at a distribution point 21, to allow the entry of water or not.

The entire treatment and distribution device is under pressure, between 2 and 8 bar. Preferably, a so-called "suction cup" safety valve 8 is added to the high point of the buffer tank to expel gas formations due to electrolysis.

However, the treatment of the water in the treatment circuit 11 can be carried out at atmospheric pressure. In this case, the purge of the buffer tank is not necessary, and there will again be a pumping made at the inlet of the distribution circuit 10, via the second booster 8, to send the treated water under pressure to the different distribution points. Optionally, a first resonator 3 can be placed between the first booster 2 and the filter 4, upstream of the buffer tank 5, in order to generate catalytic effects in the pumped water. A second resonator 20 may be placed at the first distribution point 21, away from the reservoir 5, to regenerate catalytic effects in the treated water. Other resonators can be placed at the other distribution points.

The optional and combined implementation of such an information system with electrolysis treatment improves the water quality at the point of use, as well as the capacity of each to enhance the action of the other. , particularly in terms of persistence and performance, despite the distance between the water treatment point and the water distribution point.

Example configuration of an installation for the distribution of drinking water for cattle

The first example concerns a farm with 80 to 130 dairy cows. Such an operation has a daily water consumption requirement of between 7000L and 13000L. It is estimated that cows drink between 40% and 60% of their daily water (on average 5000L) after both milkings. They drink the rest of water all day long.

On average, 2500L of water are drunk by cows after each milking. In this case, it is advisable to use a 3000L buffer tank.

The electrolysis of 3000L of water lasts for 3h minimum, in order to reach between 2 and 10 Ah / 1000L, Ah being an Ampere-hour. The buffer tank 5 must therefore be filled at least 3 hours before the first milking and the electrolysis will be activated 3 hours before the first milking of the day. This corresponds to 1 cycle of 3h. It will also be activated for 1 hour during the first milking. This treatment time can be modulated according to the results of the bacteriological and chemical analyzes.

The buffer tank 5 will have to be completely filled again at least 3 hours before the second milking and the electrolysis will be activated 3 hours before the second milking of the day. It will also be activated for 1 hour during the second milking. After the first milking, the buffer tank is filled. It therefore includes the rest of water already treated and not consumed, and the new water pumped. All of this water will be treated by two cycles of electrolysis of 2h each, activated between the two drafts, in equal time between each milking. These two cycles can pass to 3h each, if it emerges from the bacteriological analysis that the pumped water is of very poor quality.

These cycles are determined for an electrolyser 17 having a single compartment, and operating with an intensity of 3A on average.

For an electrolyser 17 operating with an intensity of less than 3A, it is advisable to add an additional 1 hour of treatment on each cycle during the day.

For an operation comprising more than 130 cows, the buffer tank used will preferably have a capacity of 5000L. The cycles will be the same as those described above, but with an electrolyser 17 having two electrolysis compartments instead of one.

In general, all these cycles can be modulated also in case of critical period, ie for example a period of overpopulation of small calves and / or cows, a period of dry cow, a period where problems of cryptosporidiosis arise on calves, etc.

The tank 5 may be located near a well on the farm, while the water distribution points are located at the barn, at the milking site, and at the grazing site. on the farm.

Example of configuration of an installation for the distribution of drinking water for chickens The second example concerns an agricultural building for raising chickens. The water requirements are of the order of 10000L per day.

Unlike cattle, chickens consume water on a regular basis throughout the day, over 24 hours. Consumption is therefore relatively linear.

A tank of 2000L is used, knowing that the water consumption is of the order of 400 to 500L of water per hour. The treatment of water is configured as follows: 1 cycle of 2h, every 4h, throughout the day, in order to have a regular distribution. Over 24 hours, the cumulative processing time is 12 hours.

These cycles can be modulated according to the results of the bacteriological and chemical analyzes. For example, if the water is heavily loaded with bacteria, the treatment will consist of 1 cycle of 3h every 5h, which represents 15 hours of treatment spread over 24 hours. The treatment is thus between 2 and 10Ah / 1000L.

If the water needs are of the order of 15000L per day, a 3000L tank will be used.

The installation shown in the figure cited is only a possible, non-limiting example of the invention which on the contrary covers variants of designs within the reach of those skilled in the art. It is the same for the examples of configuration of an installation, which are in no way limiting, and whose modulations are considered obvious to the skilled person.

Claims

claims

Water treatment and distribution device for an agricultural operation comprising:

means for pumping the water to be treated present in a source 1 of the well or groundwater type;

a buffer tank in which the water to be treated is stored;

means for treating all of the stored water by boron-doped diamond electrolysis;

means for distributing the treated water;

Water treatment and distribution device according to the preceding claim, characterized in that said pumping means consist of at least one booster 2 allowing the setting and the maintenance under pressure of the device.

Water treatment and distribution device according to one of the preceding claims, characterized in that filtration means are inserted between said pumping means and the buffer tank, said filtering means consisting of at least one filter 3, sand filter type.

Water treatment and distribution device according to one of the preceding claims, characterized in that said processing means consist of a closed loop processing circuit 1 1 comprising:

a water inlet to be treated connected to an outlet 6 of the buffer tank 5;

a device for controlling the water flow at the circuit inlet, of the valve type

16.12;

means for analyzing water 13 before treatment by electrolysis;

an electrolyzer 17 with boron doped diamond electrodes;

- A treated water outlet downstream of the electrolyser 17 and connected to an inlet 7 of the buffer tank 5.

Water treatment and distribution device according to the preceding claim, characterized in that said outlet 6 of the buffer tank 5 is located in part This buffer tank inlet 7 is located in the upper portion of the buffer tank.

6. Water treatment and distribution device according to one of claims 4 to 5, characterized in that said water analysis means 16 consist of measurements of different water parameters, of the rate type. limestone, iron level, bacteriological content, conductivity, temperature, disinfection rate.

7. Device for treating and dispensing water according to one of claims 4 to 6, characterized in that it comprises a control device 14 of the processing circuit, the programmer or clock type, so as to program cycles treatment and cycle times.

8. Water treatment and distribution device according to one of the preceding claims, characterized in that said means for dispensing treated water consist of a distribution network 10 comprising an inlet connected to an outlet 6 of the tank 5 buffer, and at least one distribution point 21 equipped with a flow control device 19 of the treated water, of the valve type, located remote from the buffer tank 5, said distance being between 10m and 500m.

9. Water treatment and distribution device according to one of the preceding claims, characterized in that it comprises a first resonator 3 disposed upstream of the buffer tank 5, and a second resonator 20 disposed at a point distribution 21.

10. Device for treating and dispensing water according to one of the preceding claims, characterized in that it comprises nutrient injection means 18 in the buffer tank 5. 1 1. A method of treating and dispensing water for an agricultural operation using a water treatment and dispensing device as described in the preceding claims, and comprising:

a first step of pumping water to be treated in a water source 1 of the well or groundwater type;

a step of storing the water pumped into a buffer tank; a step of treating all the water present in the buffer tank by means of an electrolysis carried out by boron-doped diamond electrodes;

a second step of pumping treated water from the buffer tank to a distribution network 10,

the water being pressurized at all stages.

12. A method of treating and dispensing water according to the preceding claim, characterized in that it comprises a step of filtering the water to be treated between the pumping step of the water to be treated and the step of storage of pumped water.

13. A method of treating and dispensing water according to one of claims 1 1 to 12, characterized in that it comprises a step of decalcification and / or déferrisation between the pumping step of the water to be treated and the step of storing the pumped water.

14. A method of treating and dispensing water according to one of claims 1 1 to 13, characterized in that said processing step is carried out in two phases, namely:

a first pre-electrolysis phase of all the water stored in the buffer tank, before its distribution towards the distribution network 10;

a second phase of electrolysis of the water present in the buffer reservoir during its distribution in the distribution network 10.

15. Process for treating and dispensing water according to one of claims 1 1 to 14, characterized in that it comprises a step of bacteriological and chemical analysis of the water, carried out before the treatment step.

16. A method for treating and dispensing water according to one of claims 1 1 to 15, characterized in that it comprises a step of defining the number of treatment cycles to be performed and the duration of each cycle based the quantity of water to be treated present in the buffer tank and according to the results of the bacteriological and chemical analysis steps, this definition step taking place between the analysis step and the treatment step.

17. Use of the water treatment and dispensing device as described in claims 1 to 10 for dispensing drinking water.

18. Use of the water treatment and distribution device as described in claims 1 to 10 to irrigate an above-ground plantation, with recovery of irrigation water after passing over the plants to fill again the buffer 5 buffer empty after irrigation.