WATER TREATMENT APPARATUS, WATER TREATMENT METHOD, AND METHOD OF STARTING WATER TREATMENT APPARATUS

• Main Authors: SATO, Yuya, TSUJI, Takeshi, FUCHIGAMI, Koji, FUJIWARA, Shigeki, OSATO, Aya, WATANABE, Eri, KUNUGI, Makoto, TOMURA, Keiji
• Format: Patent
• Language: English; French; German
• Published: 06.01.2021
• Subjects: CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

A water treatment apparatus including: a forward osmosis device configured to allow a diluted draw solution to flow out and to discharge a water-containing solution; a heater configured to heat the diluted draw solution; a water separator configured to separate the diluted draw solution heated by the heater into a water-rich solution and the draw solution having water content lower than that of the water-rich solution; a cooler configured to cool a liquid and allow the liquid to flow out as a coolant; an inflow side heat exchanger configured to perform heat exchange between the coolant flowed out from the cooler and the draw solution flowed out from the water separator; and an outflow side heat exchanger configured to perform heat exchange between the diluted draw solution flowed out from the forward osmosis device and the water-rich solution flowed out from the water separator.