PRIMARY SECONDARY FLOTATION OF 3 MUNICIPAL WASTEWATERS - PILOT-SCALE STUDY

A pilot system containing a particularly designed configuration of pri mary flotation unit and a combined flotation-filtration clarifier, was used for advanced municipal wastewater treatment. The system which wa s investigated demonstrated the feasibility of municipal wastewater tr eatment by the flotation separation of fluid and coagulated-flocculate d solids (Total suspended solids (TSS), organic load, Phosphorous (P), Total Kjeldahl Nitrogen (TKN)) without using microbiological oxidatio n. The particular objective herein was to create a preliminary approac h to theoretical evaluation of positive pilot-study results in the for m of two kinetic models. Based on positive pilot results, and kinetic analysis, the following conclusions were reached: A double-stage flota tion/filtration system might be a viable alternative for municipal was tewater treatment. Empirical models and prediction developed here refl ect the kinetics of the removal of coagulated and flocculated solids b y flotation.