ES2394718B1 - WATER TREATMENT SYSTEM. - Google Patents

Abstract

The invention relates to a system comprising: a feed pipe (1) connected to a water supply network (R); a feed pump (2) for driving the water; pre-filters (9a, 9b, 9c); and an osmosis membrane (3) equipped with a pipe (31) for delivering osmosis-purified water to a pressurised storage container (4) and a pipe (32) for discharging the reject water, which pipe (32) is connected to the water supply network (R). The system includes means (6) for detecting water consumption in the supply network (R) and for activating and maintaining the operation of the feed pump (2) during said consumption. The system returns all of the reject water to the water supply network (R).

Description

WATER TREATMENT SYSTEM.

5 1st 15

Object of the invention. The invention relates to a water treatment system, of the type comprising, at least: a supply duct, connected to a water supply network that supplies consumption points (P), and provided with a pump supply for the impulsion of water, through some pre-filters, towards an osmosis membrane provided with a supply duct for the osmotized water and an outlet duct for the reject water; a pressurized tank for the accumulation of the osmotic water; and an opening and closing valve of the supply duct. This system has characteristics aimed at limiting its operation to the time of consumption of water in the supply network and to return all the rejection water from the membrane to said supply network.

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Field of the invention. The invention is applicable in the field of water. treatment and debugging

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Background of the invention. Water treatment systems that are connected to a supply network, often of a domestic type, that supplies consumption points, and that include pre-filters for the initial filtering of water and a osmosis provided with an osmotic water supply line and a membrane rejection water outlet line. Osmotic water contains less waste and

particles that the water supplied by domestic distribution networks, pressurized tank automatically closes the duct

being especially appreciated for human consumption.

These water treatment systems generally have

a pressurized tank for the accumulation of the osmotic water, while

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the membrane reject water outlet duct is connected to a

drain for discharge.

These water treatment systems have the drawback,

Due to the proper functioning of the osmosis membrane, the amount of

osmotic water obtained is reduced in relation to the rejection water that

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it is poured directly into the drain. This determines that the osmotic water

obtained have an added cost for the total amount of water needed for your

obtaining and for the loss of the reject water that is poured directly into the

drain.

In some cases and in order to allow the use of the

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reject water is provided to the water treatment system with a tank to

its accumulation and subsequent use in various applications such as irrigation

or filled with toilet cisterns. This solution requires the use of a

large tank for accumulation of reject water, given

that the volume of the reject water is considerably greater than that of

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osmotic water provided by the osmosis membrane, and involves a

increase in the installation costs of the treatment system since the

Reuse of accumulated rejection water requires the installation of circuits

specific for driving from the accumulation tank to the

points of use and various accessories such as shut-off valves or

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drive pumps to these points of use.

These water treatment systems also have

usually from an opening and closing valve of the supply duct

depending on the pressure in the water supply line

osmotic that connects the osmosis membrane with the pressurized tank

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accumulation of osmotic water, so that when it is filled

water supply to the osmosis membrane.

Therefore, the technical problem that arises is the development of a

water treatment system that allows to reuse all the water from

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Rejection supplied by the osmosis membrane, without resorting to the use

of a tank for its accumulation, nor perform the installation of circuits

for later reuse in limited applications and

determined.

1st

Description of the invention.

The water treatment system object of this invention, being

of a kind comprising at least: a supply line

connected to a water supply network and provided with a

supply for the water supply, through some pre-filters to a

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osmosis membrane equipped with a conduit supplied with water

osmotic and of a rejection water outlet duct; a deposit

pressurized to accumulate osmotic water; and an opening valve and

feeding duct closure; presents some characteristics oriented to

allow the reuse of the rejection water, supplied by the membrane, in

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the supply network itself to which the supply line is connected

system power.

For this and according to the invention, the outlet duct of the

reject water is connected to the water supply network,

the system having means for detecting a consumption of

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water in the supply network and activation and maintenance in operation

of the feeding pump during the time of existence of said consumption;

the system returning all the reject water to the supply network of

Water.

In this way it is achieved, on the one hand, that the

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water treatment can only work when the water supply network

water is supplying a point of consumption and, on the other hand, that it is possible

return the reject water to said water supply network, for its

reuse, taking advantage of the pressure provided by the pump.

According to the invention, the means for detecting a

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water consumption in the supply network and activation of the

supply consist of a pressure switch well connected to the

reject water that returns it to the water supply network, either to the conduit

supply system, or to the water supply network itself.

In a variant embodiment of the invention, said means for

1st

detection of water consumption in the supply network and activation of the

feed pump are made up of a flowmeter connected to the

water supply network.

According to the invention, the rejection water outlet duct is

is connected to the water supply network, which allows to provide

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to the water treatment system a compact character without using tanks to

the accumulation of the rejection water and take advantage of the rejection water in the

supplying the point of consumption.

According to the invention, the water outlet duct from

Rejection comprises a non-return valve that prevents the circulation of water

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from the supply network to the osmosis membrane and consequently

a circulation of water inside the system in an inverse sense to that of the

normal functioning of the osmosis membrane.

The supply duct, like the outlet duct of the

reject water, it is provided with a non-return valve that prevents the

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recoil of water from the osmosis membrane to said circuit

supply, avoiding depressurization of the system.

Finally, another characteristic of the invention should be mentioned.

consisting of the opening and closing valve of the supply duct

It is connected to the rejection water outlet duct, making the opening

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and closing of the mentioned supply duct depending on the difference in

existing pressure in the rejection water outlet duct and the

feeding. This valve mechanically closes the duct of the

supply when the pump is not running, preventing

that the water from the supply network passes into the osmosis membrane due to

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to the own existing pressure in the supply network.

Description of the figures.

To complement the description that is being made and with

In order to facilitate the understanding of the characteristics of the invention,

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accompanying this descriptive memory is a set of drawings in which, with

illustrative and not limiting, the following has been represented:

-Figure 1 shows a diagram of an example of embodiment of the

water treatment system according to the invention. in which the duct

outlet of the rejection water has been represented with a dashed line to

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facilitate its visual differentiation with respect to the rest of the ducts of the system.

Preferred embodiment of the invention.

In the exemplary embodiment shown in the attached figures,

The different elements of the system have been identified with the references

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listed below:

(R) water supply network.

(P) consumption points.

(1) supply line.

(2) Feed pump.

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(3) Osmosis membrane.

(31) Osmotic water supply line.

(32) Rejection water outlet duct.

(4) Pressurized tank, osmotic water accumulator.

(5) Opening and closing valve of the supply duct.

(6)

Means for detecting water consumption in the supply network.

(7)

Non-return valve, of the rejection water outlet duct.

(8) Check valve, in the supply line.

(9a, 9b and 9c) Pre-filters.

(1 O) Minimum pressure switch, from the supply duct.

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(11) Maximum pressure switch, of the supply duct.

(12) Manometer.

(13) Flow limiter.

(14) Tap dispensed from osmotic water.

(15) Osmotic water post-filter.

1st

(16) Maximum pressure switch, of the water supply line

osmotized.

(17) non-return valve, from the water supply line

osmotized.

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In the exemplary embodiment shown in the attached figure the

treatment system comprises a supply duct (1) connected to

a water supply network that supplies consumption points (P);

said supply duct (1) being provided with a

supply (2) for the water supply, through the pre-filters (9a, 9b and

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9c), towards an osmosis membrane (3) provided with a supply duct

(31) of osmotic water and an outlet conduit (32) of reject water.

The osmotic water supply line (31) is

connected to a pressurized tank (4) for its accumulation and, through a

post filter (15), to a faucet (14) for dispensing osmotic water.

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Said supplying duct (31) has a pressure switch

maximum (16), which prevents the pump from working when the tank is

full and allows to regulate the filling pressure; and a non-return valve (17)

that prevents the osmotic water accumulated in the pressurized tank (4)

back to the osmosis membrane, when the system is not in

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functioning.

The outlet pipe (32) for reject water is

connected to the water supply network (R); having the system of

means (6) for the detection of water consumption at points (P)

supplied by the supply network (R). In the example shown, these means

5

(6) consist of a pressure switch connected to the outlet duct (32)

of the reject water.

The outlet duct (32) for the reject water is provided with

a non-return valve (7) that prevents the passage of water from the network (R) of

supply to the osmosis membrane (3) and depressurization of the valve

1st

(5) closing.

In the example shown, the supply line (1) has

a minimum pressure switch (1 O) that prevents the system from working when

the water pressure supplied by the network (R) drops below a value

predetermined; and of a non-return valve (8) that prevents the recoil of the

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water to the feed pump (2) and depressurization of the system.

This supply duct (1) incorporates a pressure switch (11) of

maximum to limit the water pressure supplied by the pump (2) to the

pre-filters (9a, 9b and 9c) and the osmosis membrane (3).

The supply line (1) has between the pre-filters (9a, 9b

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and 9C) and the osmosis membrane (3) of a manometer (12) that allows

display system working pressure and tank internal pressure

pressurized when the system is idle.

The opening and closing valve (5) of the supply duct is

it is connected to the osmotic water supply line (31)

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said valve (5) performing the opening and closing of the supply duct (1)

depending on the pressure difference existing in the outlet duct (32) of the

reject water and supply line (1).

This outlet pipe (32) for the reject water provides the

output of the osmosis membrane (3) from a flow imitator (13).

Once the nature of the invention has been sufficiently described, thus

how

a example of realization preferential, I know make record to the effects

timely that the materials, shape,

size and arrangement of elements

described

will be able to be modified, forever and when it not suppose a

alteration of the essential characteristics of the invention that are claimed

5

continuation.

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Claims (9)

1.-Water treatment system, of the type that includes at least: a supply conduit (1), connected to a network (R) of water supply 5 that supplies consumption points (P), and Provided with a feeding pump (2) for the impulsion of water, through some pre-filters (9a, 9b, 9c), towards an osmosis membrane (3) provided with a supply duct (31) of the osmotic water and of an outlet duct (32) of the reject water; a pressurized tank (4) for the accumulation of the osmotic water; and one 1st valve (5) for opening and closing the supply duct (1); characterized in that: the outlet duct (32) of the reject water is connected to the network (R) of water supply, the system having means (6) for the detection of water consumption in the supply network (R), and the activation and 15 keeping the feed pump (2) running for the duration of said consumption; the system returning all the reject water to the water supply network (R). 2.-System, according to claim 1, characterized in that the 20 means (6) for the detection of a consumption of water in the supply network (R) and the activation of the feed pump are constituted by a pressure switch. 3. System, according to claim 2, characterized in that the pressure switch is connected to the outlet duct (32) of the reject water. 4.-System, according to claim 2, characterized in that the pressure switch is connected to the supply line (1) of the system. 5. System according to claim 2, characterized in that the pressure switch is connected to the water supply network (R). 6.-System, according to claim 1, characterized in that the means (6) for the detection of water consumption in the supply network (R) and the activation of the feed pump (2) are constituted by a 5 flowmeter connected to said water supply network (R). 7.-System, according to any of the preceding claims, characterized in that the outlet duct (32) of the reject water comprises a non-return valve (7) that prevents the circulation of water from 1st the supply network (R) to the osmosis membrane (3). 8.-System, according to any of the preceding claims, characterized in that the supply duct (1) comprises a non-return valve (8) that prevents the return of water from the osmosis membrane 15 (3) towards said supply duct (1) and the depressurization of the system. 9.-System, according to any of the preceding claims, characterized in that the opening and closing valve (5) of the supply duct is connected to the outlet (32) of the reject water, 20 said valve (5) performing the opening and closing of the supply duct (1) as a function of the pressure difference existing in the outlet duct (32) of the reject water and the supply duct (1).