Mutual backwashing ultra-filtration device

• Main Authors: YAO MENG, HONG YUBIN, LIN YAQIANG, CHEN BAIYI
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2019
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a mutual backwashing ultra-filtration device. The device comprises a water inlet valve, a pretreatment assembly, a first electric three-way ball valve, a second electric three-way ball valve, a first ultra-filtration membrane set, a second ultra-filtration membrane set, a first electric ball valve, a second electric ball valve, a water outlet valve, a normally-open electromagnetic valve, a programmable time control part, a differential pressure control part and a drainage ditch. According to the device, the first ultra-filtration membrane set and the second ultra-filtration membrane set are used for cleaning through mutual backwashing; water produced by the first ultra-filtration membrane set backwashes the second ultra-filtration membrane set, then water produced by the second ultra-filtration membrane set backwashes the first ultra-filtration membrane set, finally tap water washes the first ultra-filtration membrane set and the second ultra-filtration membraneset from the front, and