公开(公告)号：US20180371737A1

公开(公告)日：2018-12-27

申请号：US16061289

申请日：2016-12-12

Applicant: NORWEST AS

Inventor： Raymond BAADE

IPC: E03F1/00 ,  B01D35/02 ,  B01D35/147

Abstract: A filter device for sewage treatment, the device comprising a housing compartment with a removable cover, an inlet before the housing compartment, a first valve before the housing compartment, and an outlet after the housing compartment. The housing compartment is provided with a filter, a by-pass passage having an inlet at the housing compartment, and an outlet after the housing compartment and after the second valve, the by-pass drainage passage being provided with a valve between the inlet and the outlet.