Water purification device and running method thereof

• Main Authors: HUANG SHENGSAN, JAGGERAKSHAY, HANADA MOKU, NING WENJUAN, TAKEUCHI KIHIRO, OKAMOTO NORIKI, YANG YUFANG
• Format: Patent
• Language: Chinese; English
• Published: 03.04.2020
• Subjects: CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention belongs to the field of water purifiers. The water purification device comprises a semipermeable membrane supply pipeline 2, a semipermeable membrane element system 1 comprising two or more semipermeable membrane elements formed by rolling a water inlet grid, a water production grid and a separation membrane, a produced water supply pipeline 4, a concentrated water supply pipeline 3and a control device 15. According to the invention, part of the semi-permeable membrane elements in the water purification device are formed by adopting a membrane surface at a high flow rate, so that the flushing/replacing/filtering step can be carried out when the water purification device is shut down and restarted after shutdown so as to ensure the water yield recovery and the stable operation of the water purification device under the high recovery rate and save water and energy, and the TDS value of the water produced by the semipermeable membrane after shutdown and restart can be effectively reduced so as to e