Liquid purification system

A liquid purification system comprising:

• a system raw liquid feed unit comprising:
• a single container made as a liquid concentration device and configured to receive raw liquid and comprising an internal partition configured to divide an inner space of the liquid concentration device into a variable volume collection cavity and a raw liquid displacement cavity,
• a primary raw liquid supply line, and
• a secondary raw liquid supply line having an inlet connected via a first connection element to the primary raw liquid supply line before a pressurizing means mounted in the primary raw liquid supply line,
• wherein an outlet of the secondary raw liquid supply line is connected to the single container;
• a filtration unit comprising:
• a mixing line configured to direct concentrate formed by a liquid filtration cycle to be mixed with the raw liquid and be stored in the variable volume collection cavity of the single container, the mixing line connected via a second connection element to the primary raw liquid supply line after the pressurizing means,
• at least one liquid purification means connected with a liquid velocity increasing means that is connected to draw from the variable volume collection cavity,
• a recycling line configured to recycle at least a portion of the concentrate to the single container, the recycling line connected at one end to a concentrate exit of the at least one liquid purification means and connected at an other end to the second connection element connected to the mixing line such that there is a pumpless connection to feed the concentrate between the concentrate exit of the at least one liquid purification means and the variable volume collection cavity of the single container,
• a drain discharge line with a drain discharge valve mounted thereon,
• a purified liquid supply line connected to a purified liquid exit of the at least one liquid purification means,
• wherein the system raw liquid feed unit is adapted to displace the concentrate from the single container by pressure exerted by the raw liquid on the internal partition,
• wherein the variable volume collection cavity is configured to receive the raw liquid from an initial stage of liquid filtration and to receive and mix therein the concentrate and the raw liquid during a liquid filtration process,
• wherein the raw liquid displacement cavity is connected with the secondary raw liquid supply line and configured to displace the concentrate from the variable volume collection cavity of the liquid concentration device by the raw liquid coming from the secondary raw liquid supply line under the pressure exerted by the raw liquid on the internal partition in a drain liquid discharge process and to recycle the raw liquid from the raw liquid displacement cavity of the liquid concentration device through the secondary raw liquid supply line and the pressurizing means under pressure exerted by a mixture of the concentrate and the raw liquid in the variable volume collection cavity on the internal partition of the liquid concentration device,
• wherein the filtration unit is adapted to provide contact between the raw liquid and the concentrate in the variable volume collection cavity for the raw liquid coming at the initial stage of liquid filtration and sufficient for mixing therein the concentrate and the raw liquid in the liquid filtration process,
• wherein an inlet of the at least one liquid purification means is connected through a line configured to supply the mixture of the concentrate and the raw liquid, and in which the liquid velocity increasing means is mounted, directly to the variable volume collection cavity of the liquid concentration device.