In water treatment, rapid gravity filters are adopted to remove
A. dissolved organic substances
B. dissolved solids and dissolved gases
C. floating solids and dissolved inorganic solids
D. bacteria and colloidal solids
Answer:D
In water treatment, rapid gravity filters are adopted to remove
A. dissolved organic substances B. dissolved solids and dissolved gases C. floating solids and dissolved inorganic solids D. bacteria and colloidal solids