Water treatment equipment

A water treatment equipment comprising:

• a reactor vessel including an absorbent packed bed filled with a phosphorus adsorbent which adsorbs phosphorus contained in water to be treated;
• an introduction path configured to introduce the water to be treated into the reactor vessel;
• a discharge path configured to discharge, from the reactor vessel, the water from which phosphorus has been removed;
• a water passing mechanism configured to pass, through the reactor vessel, a phosphorus desorption agent liquid which desorbs phosphorus from the phosphorus adsorbent which has adsorbed phosphorus;
• a phosphorus recovery mechanism configured to recover phosphate from the phosphorus desorption agent liquid which has been subjected to the passing treatment;
• and
• an upward flow formation path communicated with a lower part of the reactor vessel, and configured to upwardly introduce a liquid into the reactor vessel to form an upward flow after the water which has been held in the reactor vessel is discharged from the reactor vessel.