WATER TREATMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a water treatment apparatus which recovers and recycles phosphorus contained in water to be treated discharged from treatment processes of sewage or industrial wastewater of a food processing plant or the like. SOLUTION: The water 1 to be treated is made to pass through a first reactor 3-1 and a second reactor 3-2 to remove the phosphorus contained in the water 1 by an adsorbent 2, and then the liquids retained in the reactors are respectively discharged from a first treated water discharge path 4-1 and a second treated water discharge path 4-2 to eliminate the influence mainly of soluble impurities derived from the water 1. When suspended solid impurities contained in the water 1 are accumulated in a phosphorus adsorbent 2, the impurities are removed by backwashing operation using a liquid introduced thereafter from a reactor liquid introduction path to eliminate the influence of suspended solids in the water 1 on a desorbing chemical liquid containing phosphorus from the phosphorus adsorbent introduced thereafter into a crystallization tank 8. COPYRIGHT: (C)2011,JPO&INPIT