Preliminary treatment covers removal of larger suspended solids and heavier inorganic particulates through mechanical bar screening , gravitational sedimentation and flotation to keep the subsequent unit operations and processes from clogging and abrasion and to maintain the designed functions of the equipment . commonly used preliminary treatment equipment includes bar screen , fine particle sieving , grit chamber , pre - aeration , grease well and scraping chamber , etc . domestic companies have the capability of manufacturing all equipment except fine sieves 兩大類,其他還有地下水污染處理、海洋港口污染處理、水庫(kù)湖泊污染處理等,所需之處理設(shè)施大致有攔污設(shè)備、沉砂設(shè)備、除油設(shè)備、沉淀設(shè)備、過(guò)濾設(shè)備、生物處理相關(guān)設(shè)備、污泥脫水設(shè)備、加藥設(shè)備、高級(jí)處理相關(guān)設(shè)備等。
Preliminary treatment covers removal of larger suspended solids and heavier inorganic particulates through mechanical bar screening , gravitational sedimentation and flotation to keep the subsequent unit operations and processes from clogging and abrasion and to maintain the designed functions of the equipment 前處理系指以機(jī)械攔截、重力沉淀、浮除等方式,將水中體積較大之懸浮固體、較重的無(wú)機(jī)性固體,或是過(guò)量的油脂等污染物先行移除,避免造成后續(xù)處理單元設(shè)備發(fā)生阻塞、磨損等現(xiàn)象,而影響到機(jī)械設(shè)備的原有功能。