Liquid purification system

A liquid purification system comprising:

• a source liquid supply,
• a purified liquid feed line to a consumer,
• a liquid purification unit in fluid communication with the source liquid supply and the purified liquid feed line, the liquid purification unit comprising:
• a liquid-liquid type container comprising a body and a means that defines a storage cavity for purified liquid and a displacement cavity to receive source liquid from the source liquid supply, said means disposed within the body,
• at least one liquid purification means,
• a drainage line in fluid communication with the liquid purification means, and
• a liquid flow control system including a source liquid feed section, a purified liquid feed section, and a source liquid distribution section,
• wherein in the liquid purification unit, the liquid flow control system is configured to maintain liquid pressure in the displacement cavity of the container higher than atmospheric pressure,
• wherein the source liquid feed section comprises an inlet in fluid communication with the source liquid distribution section and an outlet in fluid communication with the liquid purification means,
• wherein the purified liquid feed section comprises an inlet in fluid communication with the liquid purification means, a first outlet in fluid communication with the purified liquid feed line, and a second outlet in fluid communication with the storage cavity, and
• wherein the source liquid distribution section is configured to pass source liquid displaced from the displacement cavity to the source liquid feed section and to distribute and redirect flows of source liquid and purified liquid without using a hydro automatic unit, and
• wherein the source liquid distribution section has:
• a contra-flow liquid movement arrangement and includes a source liquid recirculation line connected on one end with the displacement cavity for source liquid of the container and on an other end with the source liquid supply and the source liquid feed section;
• wherein the source liquid feed section of the liquid flow control system, having the source liquid feed section inlet connected to the source liquid distribution section and the source liquid feed section outlet connected to the liquid purification unit, further comprises a pressure increasing means that produces pressure which is conveyed via the liquid purification unit and the purified liquid feed section to the storage cavity for purified liquid of the container, and exceeds pressure maintained in the displacement cavity for source liquid of the container.