... or beverage factory, which include sand filter, carbon filter, softener, micron filter and RO system.1.1 First stage pretreatment.(Sand ... The main structure: barrel body, baffles, manhole, gauge, filter head, filter, into the water pipes, drains and flushing water mains, ... next long-running processes. 1.5 RO systemUsing reverse osmosis technology for desalination, reverse osmosis membrane was only 0. ...