Claims:We Claim:
1. A customizable water purifier for the controlled leaching of mineral/s in the purified water, where said purifier adds/supplements controlled amount of mineral/s in the resulting purified water without by-passing and mixing the feed/raw water with the purified water, comprising the following components:

a) plurality of filtration units to filter and perform reverse osmosis treatment of the feed/raw water received from a first inlet port and releasing the filtered/permeate water from the first outlet port while the reject/concentrated water from the second outlet port where said filtration units comprises combination/s of pre-treatment unit, sediment filter, carbon filter, anti-scale filter, reverse osmosis unit;
b) atleast a flow splitter configured to split the flow path, based on the signal received from a controller, of the filtered water resulting from the first outlet port into atleast a flow path 1 comprising a mineraliser for the controlled leaching of mineral/s in the purified water and/or atleast a flow path 2 that by-passes the mineral cartridge;
where the water resulting from said flow path 1 and flow path 2 merges to a flow path 3;
c) atleast a storage tank to store the purified water wherein said storage tank comprises a conductivity Sensor;
d) optionally, anti-microbial filtration units adapted to receive and treat the water resulting from flow path 3, where said anti-microbial filtration units comprises ultrafilter, ultraviolet filter, nanofilter and like;

wherein said storage tank comprises atleast a Total Dissolved Solid sensor which sense/s the quantity of the mineral of the product water in said storage tank and provides signal to the controller for directing the path of said permeate water resulting after RO treatment into atleast a flow path 1 and/or atleast a flow path 2;
where said controller conveys RO permeate water to pass through flow path 1 if the quantity of the mineral of the product water is lesser than the set threshold limit wherein said mineraliser adds mineral to the water till the TDS value reaches to the set threshold limit range;
wherein said controller conveys the RO permeate water to pass through flow path 2 if the quantity of the mineral of the product water is equal or falling in the threshold limit range.
2. The water purifier as claimed in claim 1, wherein said flow path 1 and flow path 2 comprises solenoid valves for regulating the flow of water.
3. The water purifier as claimed in claim 1, wherein threshold limit range of the TDS is customizable as per the desire of the user.
4. The water purifier as claimed in claim 1, wherein threshold limits range of the TDS is customizable, comprising the range of 10 to 200 ppm or more.
5. The water purifier as claimed in claim 1, wherein said mineraliser comprises a natural or synthetic or impregnable or Ionizer or a combined technology with natural, synthetic, impregnable and ionizer together.
6. The water purifier as claimed in claim 1, wherein said mineraliser comprises calcium, magnesium, copper, zinc, silver and other essential/macro/micro & trace metals/nutrients/elements.
7. The water purifier as claimed in claim 1, wherein said mineraliser is in solid or liquid form.
8. A method of operation of a customizable water purifier for the controlled leaching of mineral/s in the purified water, where said purifier adds/supplements controlled amount of mineral/s in the resulting purified water without by-passing and mixing the feed/raw water with the purified water, comprising the following steps:
a) Pre-treatment comprising reverse osmosis treatment or filtration of said feed/raw water by said pre-treatment or filtration or Reverse Osmosis units where said treatment / filtration results into filtered/permeate water flowing from first outlet port while the reject/concentrated water flowing from second outlet port;
b) Sensing of the TDS for estimating the quantity of mineral of the purified water in the storage tank by said sensor where said sensor further sends the signal to the controller;
wherein the controller directs the flow of water from the first outlet port to the flow path 1, for the process of adding/supplementing the mineral/s through the mineraliser, through solenoid valve, in case the signal for the TDS value is lesser than the threshold range;
while the controller directs the flow of water from the first outlet port to the flow path 2, through solenoid valve, in case the signal for the TDS value is equal or falling in a set threshold range;
c) Merging of the water resulting from flow path 2 and flow path 1 into single line flow path 3 for being stored in the storage tank after being treated through a microfiltration filter.
9. The method as claimed in claim 7, wherein said mineraliser adds/supplements controlled amount of mineral/s in the water till the value of TDS reaches to the set threshold range.
10. The method as claimed in claim 7, wherein said mineraliser comprises a natural or synthetic or impregnable or Ionizer or a combined technology with natural, synthetic, impregnable and ionizer together.
11. The method as claimed in claim 7, wherein said mineraliser comprises calcium, magnesium, copper, zinc, silver and other essential/macro/micro & trace metals/nutrients/elements.
12. The method as claimed in claim 7, wherein said mineraliser is in solid or liquid form.
, Description:Field of Invention:
The present invention relates to the field of water purifier. The Invention in particular provides a customizable water purifier for the controlled leaching of mineral/s in the purified water and method thereof. The purifier adds/supplements controlled amount of mineral/s in the purified water without by-passing and mixing the feed/raw water with the purified water.

Background of the Invention:
The following background discussion includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
The composition of water varies widely with local geological conditions. Neither groundwater nor surface water has ever been chemically pure H2O, since water contains small amounts of gases, minerals and organic matter of natural origin. Awareness of the importance of minerals and other beneficial constituents in drinking water has existed for thousands years, being mentioned in the Vedas of ancient India. In the book Rig Veda, the properties of good drinking water were described as follows: “Sheetham (cold to touch), Sushihi (clean), Sivam (should have nutritive value, requisite minerals and trace elements), Istham (transparent), Vimalam lahu Shadgunam (its acid base balance should be within normal limits).”

Drinking water should contain minimum levels of certain essential minerals and other components such as carbonates. Unfortunately, over the two past decades, little research attention has been given to the beneficial or protective effects of drinking water substances. The main focus has been on the toxicological properties of contaminants. Low-mineral content water in the light of the absence or substantial lack of essential minerals in it, is not considered ideal drinking water. Salts are leached from the body under the influence of drinking water with a low TDS. Altered water-salt balance was observed not only in completely desalinated water but also in water with TDS between 50 and 75 mg/L (WHO 1980 report).

Reverse osmosis, commonly referred to as RO, is a process where the water is purified by pushing it under pressure through a semi permeable reverse osmosis membrane. In Conventional RO purifier (figure 1) feed water is pumped into a Reverse Osmosis (RO) membrane and ends up with two types of water coming out of the RO system, permeate and concentrate/brine. The permeate water that comes out from RO system has the majority of contaminants removed and the concentrate water is the water that contains all of the contaminants that were unable to pass through the RO. Sediment and carbon block filters are used before membrane to safeguard the membrane from suspended particles, organics and chlorine etc. while Granulated carbon and antimicrobial filters are used after membrane to give permeate water an extra purity.
RO membrane rejects most of the ions including useful minerals and decreases pH to 0.5 to 1.0 unit. Upon rejection of mineral, the product water looses its taste and decrease the pH and TDS.
The convention technologies for the addition of minerals includes by-passing the feed water (not allowing to enter in to RO membrane) and blending in the tank to retain the minerals. This by-pass in not technically good solution to preserve the minerals, as it may even by-pass the heavy metals which is harmful to the health. This by-pass mechanism is manual and based on onetime adjustment by needle valve or micro control.
Hence, there is a need of water purifier that will not by-pass any feed water and is able to maintain the desirable mineral content in a controller manner in the purified water in a 100% RO system.

Objective/s of the Invention:
The primary object of the present invention is to overcome the drawback associated with the prior art.
Another object of the present invention is to provide a water purifier with controlled leaching of minerals in the purified water.
Yet another object of the present invention is to provide an intelligent mineral addition mechanism in water purifier which works based on the product water quality in terms of Total Dissolved Solids.
Yet another object of the present invention is to provide a water purifier that is able to maintain the mineral content in the purified water even with 100% RO.
Yet another object of the present invention is to provide a 100% RO based water purifier that will not by-pass any feed water.
Yet another object of the present invention is to provide a 100% RO based water purifier that will never compromise to mix feed water with RO permeate water to balance the desired TDS.
Yet another object of the present invention is to provide a 100% RO based water purifier that can filter out all the heavy metals.
Yet another object of the present invention is to provide a 100% RO based water purifier with automatic switching of mineral flow path.
Yet another object of the present invention is to provide a water purifier in which the mineralizer can release the controlled dose of minerals depending on the product water condition.
Yet another object of the present invention is to provide a water purifier which adds minerals in the product water to increase the taste, balance pH and to maintain the minerals.
Yet another object of the present invention is to provide a water purifier which adds minerals like Calcium, Magnesium and other trace ions in the product water.
Yet another object of the present invention to provide an efficient mineral releasing water purifier.
Yet another object of the present invention is to provide method of operation of the water purifier for controlled leaching of minerals in the purified water.

Summary of the Invention:
The present invention provides a water purifier system and method thereof for the controlled leaching of minerals in the purified water.
In an aspect of the present invention, there is provided a customizable water purifier for the controlled leaching of mineral/s in the purified water, where said purifier adds/supplements controlled amount of mineral/s in the resulting purified water without by-passing and mixing the feed/raw water with the purified water. The water purifier comprises following components:
a) plurality of filtration units to filter and perform reverse osmosis treatment of the feed/raw water received from a first inlet port and releasing the filtered/permeate water from the first outlet port while the reject/concentrated water from the second outlet port where said filtration units comprises combination/s of pre-treatment unit, sediment filter, carbon filter, anti-scale filter, reverse osmosis unit;
b) atleast a flow splitter configured to split the flow path, based on the signal received from a controller, of the filtered water resulting from the first outlet port into atleast a flow path 1 comprising a mineraliser for the controlled leaching of mineral/s in the purified water and/or atleast a flow path 2 that by-passes the mineral cartridge;
where the water resulting from said flow path 1 and flow path 2 merges to a flow path 3;
c) atleast a storage tank to store the purified water wherein said storage tank comprises a conductivity Sensor;
d) optionally, anti-microbial filtration units adapted to receive and treat the water resulting from flow path 3, where said anti-microbial filtration units comprises ultrafilter, ultraviolet filter, nanofilter and like;

wherein said storage tank comprises atleast a Total Dissolved Solid sensor which sense/s the quantity of the mineral of the product water in said storage tank and provides signal to the controller for directing the path of said permeate water resulting after RO treatment into at least a flow path 1 and/or atleast a flow path 2;
where said controller conveys RO permeate water to pass through flow path 1 if the quantity of the mineral of the product water is lesser than the set threshold limit wherein said mineraliser adds mineral to the water till the TDS value reaches to the set threshold limit range;
wherein said controller conveys the RO permeate water to pass through flow path 2 if the quantity of the mineral of the product water is equal or falling in the threshold limit range.
In another aspect of the Invention, there is provided a method of operation of a customizable water purifier for the controlled leaching of mineral/s in the purified water, where said purifier adds/supplements controlled amount of mineral/s in the resulting purified water without by-passing and mixing the feed/raw water with the purified water, comprising the following steps:
a) Pre-treatment comprising reverse osmosis treatment or filtration of said feed/raw water by said pre-treatment or filtration or Reverse Osmosis units where said treatment / filtration results into filtered/permeate water flowing from first outlet port while the reject/concentrated water flowing from second outlet port;
b) Sensing of the TDS for estimating the quantity of mineral of the purified water in the storage tank by said sensor where said sensor further sends the signal to the controller;
wherein the controller directs the flow of water from the first outlet port to the flow path 1, for the process of adding/supplementing the mineral/s through the mineraliser, through solenoid valve, in case the signal for the TDS value is lesser than the threshold range;
while the controller directs the flow of water from the first outlet port to the flow path 2, through solenoid valve, in case the signal for the TDS value is equal or falling in a set threshold range;
c) Merging of the water resulting from flow path 2 and flow path 1 into single line flow path 3 for being stored in the storage tank after being treated through a microfiltration filter.
Detailed description of the drawing:
The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and, together with the description, explain the disclosed principles. The reference numbers are used throughout the figures to describe the features and components. Some embodiments of system and/or methods in accordance with embodiments of the present subject matter are now described, by way of example only, and regarding the accompanying figures, in which:
Figure 1: illustrates conventional RO water purifier
Figure 2: illustrates an exemplary embodiment of water purifier for controlling leaching of minerals, in accordance to the present invention

Detailed Description of the Invention:
Before to present the system and method thereof, it is to be understood that this invention is not limited to the particular system, and methodologies described, as there can be multiple possible embodiments of the present invention which are not expressly illustrated in the present disclosure. It is also to be understood that the terminology used in the description is for the purpose of describing the particular versions or embodiments only, and is not intended to limit the scope of the present invention which will be limited only by the appended claims.
The present invention provides a water purifier system and method thereof for the controlled leaching of minerals in the purified water.
In an embodiment, the water purifier is based on intelligent mineral addition mechanism that works based on the product water quality (TDS). There will be conductivity probe (TDS) in the product water tank, it will measure the TDS and give signal to controller to choose the path.
It is possible in the ambit of the present invention to include other sensor/s as well to measure quality of the water.
The 100% RO based water purifier provided by the present invention does not compromise to mix feed water with RO permeate water to balance the desired TDS.
In an embodiment, the water purifier comprises a mineralizer that can release the controlled dose of minerals depending on the product water condition i.e. it will not release more or less minerals.
In an embodiment, there is provided a customizable water purifier for the controlled leaching of mineral/s in the purified water, where said purifier adds/supplements controlled amount of mineral/s in the resulting purified water without by-passing and mixing the feed/raw water with the purified water. The water purifier comprises following components:
a) plurality of filtration units to filter and perform reverse osmosis treatment of the feed/raw water received from a first inlet port and releasing the filtered/permeate water from the first outlet port while the reject/concentrated water from the second outlet port where said filtration units comprises combination/s of pre-treatment unit, sediment filter, carbon filter, anti-scale filter, reverse osmosis unit;
b) atleast a flow splitter configured to split the flow path, based on the signal received from a controller, of the filtered water resulting from the first outlet port into atleast a flow path 1 comprising a mineraliser for the controlled leaching of mineral/s in the purified water and/or atleast a flow path 2 that by-passes the mineral cartridge;
where the water resulting from said flow path 1 and flow path 2 merges to a flow path 3;
c) atleast a storage tank to store the purified water wherein said storage tank comprises a conductivity Sensor;
d) optionally, anti-microbial filtration units adapted to receive and treat the water resulting from flow path 3, where said anti-microbial filtration units comprises ultrafilter, ultraviolet filter, nanofilter and like;

wherein said storage tank comprises atleast a Total Dissolved Solid sensor which sense/s the quantity of the mineral of the product water in said storage tank and provides signal to the controller for directing the path of said permeate water resulting after RO treatment into atleast a flow path 1 and/or atleast a flow path 2;
where said controller conveys RO permeate water to pass through flow path 1 if the quantity of the mineral of the product water is lesser than the set threshold limit wherein said mineraliser adds mineral to the water till the TDS value reaches to the set threshold limit range;
wherein said controller conveys the RO permeate water to pass through flow path 2 if the quantity of the mineral of the product water is equal or falling in the threshold limit range.

In an embodiment, the mineraliser is in solid or liquid form.
In an embodiment, the flow path 1 and flow path 2 comprises solenoid valves for regulating the flow of water.
In an embodiment, the threshold limit range of the TDS is customizable as per the desire of the user.
In an embodiment, the threshold limit range of the TDS is customizable. In an embodiment, the TDS range comprises 10- 40 ppm, 41-70ppm, 71-100ppm, 101-130ppm, 131-160 ppm, 160-190 ppm or even more and even other various TDS ranges as per the desire of the user.
In an embodiment, the mineraliser comprises a natural or synthetic or impregnable or Ionizer or a combined technology with natural, synthetic, impregnable and ionizer together. The substance of the mineraliser may be solid or liquid
In an embodiment, the mineraliser comprises calcium, magnesium, copper, zinc, silver and other essential/macro/micro & trace metals/nutrients/elements. The substance of the mineraliser may be solid or liquid.
In an embodiment, the water purifier unit comprising of a sediment filtration, pre-carbon filtration, Scale control media. The membrane is based RO/NF/ RO+NF module/s, post carbon UV/UF filtration or charged membrane based microbial filter and Mineralizer/Alkalizer with Intelligent mineral addition mechanism. The membranes are RO or NF or UF or combination of two or more.
In an embodiment, the intelligent mechanism is by electronically controlled by incorporating PCB or any other electronic device or fixed/ variable time based or with manual override.
In an embodiment, the selection of flow path is selected from fixed time, continuous or at pre-defined intervals.
In an embodiment, the auto selection of flow path is by a TDS/ Conductivity/other sensor.
In an embodiment, the sensor is single, multiple in anywhere in unit.
In an embodiment, the system comprises auto cutoff mechanism which facilitates automatic selection of the water path flow as per the mineral requirement/s.
In an exemplary embodiment, referring to the figure 2, the system (100) for controlled release/leaching of mineral comprises a filtration unit with an input (101) and an output line(103) for feed and takeout water from the plurality of filtering means (102), a purifying unit (104) produced purified water (106) and concentrated water (105) coming from the RO membrane. The purified water (106) split by the flow splitter (107) and the splitted purified water flow through the path 1 and the path. A mineral supplement unit (110) provided for addition of mineral to the purified water when the flow along the path 1. A solenoid valve (SV-2) (108) connecting the mineral cartridge and the path 1 while the SV-1 (109) placed in between in the flow path 2 and antimicrobial unit (111). The water coming through path 1 and path 2 is disinfectify by the antimicrobial unit (11) and the produced product water (115) which is collected by the storage tank (112) while a controlled leaching unit adapted for controlled addition of mineral in the purified water. A controlled leaching unit comprises a sensor (113) to sense the quantity of mineral present in the product water, above and below, the predefined value and placed inside the storage tank(112);
A pair of solenoid valve 1(SV-1)(109) and valve 2 (SV-2) (108) which are open and close on getting a signal from electronically connected a controller (114) or PCB which is further connected with the sensor(113) configured in such a way that control the addition of mineral by opening/closing the valve 1 (109) and valve 2(108).
In an embodiment, the filtration means comprises sediment filter, carbon filter and anti scale filter.
In an embodiment, the sensor senses the TDS in the water and comprises a TDS sensor. Water purifier comprises an automatic switching for flow path on sensing the mineral/ TDS in the said product water in accordance to the present invention.
In an embodiment, the mineral supplement unit comprises a natural or synthetic or impregnable or Ionizer or a combined technology with natural, synthetic, impregnable and ionizer together. In an embodiment, the minerals are calcium, magnesium, copper, zinc, silver and other essential/macro/micro & trace metals/nutrients/elements. The substance of the mineraliser may be solid or liquid.
In an embodiment, antimicrobial unit comprises ultra filtration, Nano filtration, UV and charged membrane based microbial filter.
In an embodiment, said sensor comprises sensor or multiple sensor/s and may be placed anywhere in the system.
In an embodiment, the system comprising single sensor or multiple sensor and may be placed anywhere in the system.
In an embodiment, the water purified by the standard RO membrane and the Product water pH/TDS is controlled by Intelligent Mineral addition technology.
In an embodiment, the mineralizer should release required ions in specified contact time. The life of the mineralizer may vary depending on the feed water quality, difficult to optimize
In an embodiment, water purifier comprises the membrane based RO/NF/ RO+NF module/s, post carbon UV/UF filtration or charged membrane based microbial filter and Mineralizer/Alkalizer with Intelligent mineral addition mechanism.
In an embodiment the system use an intelligent mechanism for choosing the flow path after 100% membrane filtration of post membrane filters or Mineral filter depending on the either permeate water or Feed/input water quality.
In an embodiment the system is electronically controlled by incorporating PCB or any other electronic device or fixed/ variable time based or with manual override.
In an embodiment the system feed/input water pass through pre filters and membrane 100% without any by-pass mechanism of manual or automatic controlled.
In an embodiment, the pre defined threshold values for product water comprises 10- 40 ppm, 41-70ppm, 71-100ppm, 101-130ppm, 131-160 ppm, 160-190 ppm or even more and even various ranges.
In another aspect of the Invention, there is provided a method of operation of the water purifier as described above.
The purifier performs controlled leaching of mineral/s in the purified water, where said purifier adds/supplements controlled amount of mineral/s in the resulting purified water without by-passing and mixing the feed/raw water with the purified water.
In an embodiment, the method comprises following steps:
a) Pre-treatment comprising reverse osmosis treatment or filtration of said feed/raw water by said pre-treatment or filtration or Reverse Osmosis units where said treatment / filtration results into filtered/permeate water flowing from first outlet port while the reject/concentrated water flowing from second outlet port;
b) Sensing of the TDS for estimating the quantity of mineral of the purified water in the storage tank by said sensor where said sensor further sends the signal to the controller;
wherein the controller directs the flow of water from the first outlet port to the flow path 1, for the process of adding/supplementing the mineral/s through the mineraliser, through solenoid valve, in case the signal for the TDS value is lesser than the threshold range;
while the controller directs the flow of water from the first outlet port to the flow path 2, through solenoid valve, in case the signal for the TDS value is equal or falling in a set threshold range;
c) Merging of the water resulting from flow path 2 and flow path 1 into single line flow path 3 for being stored in the storage tank after being treated through a microfiltration filter.
In an embodiment, the mineraliser adds/supplements controlled amount of mineral/s in the water till the value of TDS reaches to the set threshold range.
In an embodiment, the mineraliser comprises a natural or synthetic or impregnable or Ionizer or a combined technology with natural, synthetic, impregnable and ionizer together. The mineraliser comprises calcium, magnesium, copper, zinc, silver and other essential/macro/micro & trace metals/nutrients/elements. The substance of the mineraliser may be solid or liquid. The solenoid valves 1 and 2 are controlled by the controller.
The Invention is further described with the help of non-limiting examples:
Example 1:
After 100% RO, the Product water pH/TDS is controlled by Intelligent Mineral addition technology. TDS probe installed in tank, depending on the TDS it will give signal to SV-1 or SV-2
If TDS is less than specified ppm (less than 100ppm) the controller allows water to pass through mineralizer till the water TDS reaches to 130ppm*. Once it reaches to 130ppm* again controller will control to pass through normal flow without mineralizer. The product TDS is always maintained in between 101 – 130*ppm of TDS. This will be controlled by a controller with help of solenoid valves.

Example 2:
After 100% RO, the Product water pH/TDS is controlled by Intelligent Mineral addition technology. TDS probe installed in tank, depending on the TDS it will give signal to SV-1 or SV-2. If TDS is less than 101 ppm, SV-1 CLOSE and SV-2 OPEN – there will be addition of minerals to product water. If TDS is more than 130ppm, SV-2 CLOSED and SV-1 OPEN
Example 3:
The water purifier system and method thereof for the controlled release of minerals in the purified water. The system comprises following components:
a) a water purifier system comprises of a RO Pretreatment unit with sediment, carbon & anti-scale filter. RO membrane comprises a first and second outlet port wherein the purified water coming from the first outlet port and concentrated water coming from the second outlet port.

b) a flow splitter connected with the first outlet port and configured to split the flow of water from first outlet port into at least two path, path1 and path 2.

c) Path 1 & 2 connected to a single line further, named Path 3.

d) an antimicrobial filter system like Ultra filtration, Nano Filtration or UV connected in Path 3.

e) storage tank to collect the product water coming from path3.

f) Mineral cartridge placed in between the path1 and configured to add minerals in the water coming through path 1.

g) A pair of solenoid valve (SV) comprising the valve 1(SV-1) and a valve 2 (SV-2) wherein the valve 1 placed between mineral cartridge and the path 1 and the valve 2 placed between the path 2 of the flow.

h) A TDS sensor placed inside the storage tank and configured to send signal to a controller to control or choose the path. Wherein the said sensor sense the quantity of mineral of the ( TDS) product water and the said controller control the valve 1 and 2 and allow to water flow through the mineral cartridge below the specified value of mineral and above the specified value of mineral the said controller allow the flow through only path 2.

Example 3:
The system is automatically customized for 10- 40 ppm, 41-70ppm, 71-100ppm, 101-130ppm, 131-160 ppm, 160-190 ppm or even more & even multiple ranges respectively in different experiments. If the tank water TDS is lesser than Set TDS, the PCB (114) will open SV-2(108) & close SV-1(109). The permeate water will flow through Mineral filter and bring the tank water TDS same as set TDS. If the tank water TDS is same as Set TDS. The PCB(114) will open SV-1(109) & close SV-2(108). The permeate water will bypass the mineral filter.The permeate water after RO may pass through SV-1(109) & SV-2(108) both if required. PCB will decide and open both the SV if required.
Example 4:
In an embodiment, the system comprises auto cutoff mechanism which facilitates automatic selection of the water path flow as per the mineral requirement/s. The auto cutoff mechanism comprises at least one flow splitter (107), two Solenoid Valves SV1 & SV2 (108 & 109), one specialized mineral filter (110) and one Intelligent controller PCB (114). The flow splitter will allow the permeate water to flow in two paths, controlled by SV 1 & SV2. The TDS sensor (113) will detect the tank TDS. The 1st X Min PCB will open SV2 & SV3 both. If the tank water TDS is lesser than Set TDS, the PCB will open SV2 & close SV1. The permeate water will flow through Mineral filter and bring the tank water TDS same as set TDS. If the tank water TDS is same as Set TDS. The PCB will open SV1 & close SV2. The permeate water will bypass the mineral filter.The system is designed such a way that tank water TDS will never reach higher than set TDS. Consumer can program/Choose 10- 40 ppm, 41-70ppm, 71-100ppm, 101-130ppm, 131-160 ppm, 160-190 ppm or even more and even multiple ranges of TDS water. The permeate water after RO may pass through SV1 & SV2 both if required. The flow rate of permeate water through SV1 & SV2 may controlled by PCB if required. PCB will decide and open both the SV if required. The flow rate of permeate water through SV1 & SV2 may controlled by PCB if required. This is illustrated in Figure 2(b).