Question

is secondary treatment sewage water is treated with..................​

Answer 1

chlorine water, filtertation, sedimentation, chlorniation

Answer 2

Secondary treatment is a treatment process for wastewater (or sewage) to achieve a certain degree of effluent quality by using a sewage treatment plant with physical phase separation to remove settleable solids and a biological process to remove dissolved and suspended organic compounds. After this kind of treatment, the wastewater may be called as secondary-treated wastewater.