... sediment deposit in tank bottom. The tank body equip with sludge tank, the scraper set in the sludge tank, the scraper rotation ... constant, continuous scrape the floated sludge into sludge tank, then flow automatically into sludge pond.2)Dissolved air ... speed, improve dissolved air efficiency.3) Chemical agentia: steel round tank, used to dissolve storage liquid medicine. 5. Application Scope ...