Liquid purification system

A liquid purification system comprising

• a source liquid supply,
• a purified liquid feed line to a consumer,
• a liquid purification unit including a liquid-liquid type container comprising a body and a means that defines a storage cavity for purified liquid and a displacement cavity, as well as a liquid mineralization means, wherein
• said means is disposed within the body, and
• said liquid mineralization means is disposed at least mostly within the storage cavity for purified liquid of the container and coupled to the outlet of the liquid purification means and the purified liquid feed line to a consumer via the purified liquid feed section,
• at least one liquid purification means,
• a drainage line, and
• a liquid flow control system including a source liquid feed section and a purified liquid feed section, wherein
• in the liquid purification unit, the liquid flow control system is configured with a source liquid distribution section arranged for maintaining liquid pressure in the displacement cavity, intended mainly for source liquid, of the container, higher than atmospheric pressure.