WATER TREATMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a water treatment apparatus for frequently backwashing a filter element to always operate the same normally and sufficiently cleaning water to be treated to obtain product water of excellent quality. SOLUTION: A Venturi type vacuum tank having a tank part in which a vacuum space is formed and accumulated at a time of the conveying of water is arranged to the water pipeline between a conveying pump and a filter element (reverse osmosis membrane, ultrafiltration membrane or the like).