Research of treatment effect on oil-contaminated sewage with gas absorption floatation
The paper analyzes the treatment process of oil-contaminated sewage with gas absorption floatation, which shows that changing water quality influences directly on the quantity of flocculant, refluent rate, the pressure of absorption gas as well as flux of gas absorption water. Reasonable technology is provided: To control the pressure of absorption gas is 0.3～0.4 MPa, while oil content is less than 30 mg/L, polymeric aluminum chloride content in floatation tank is 75 mg/L, flux of gas absorption water is 8 t/h; while oil content is between 30 mg/L～50 mg/L, polymeric aluminum chloride content in floatation tank is 100 mg/L, flux of gas absorption water is 8.5 t/h; while oil content is between 50 mg/L～100 mg/L, polymeric aluminum chloride content in floatation tank is 150 mg/L, flux of gas absorption water is 9 t/h; while oil content is more than 100 mg/L, polymeric aluminum chloride content in floatation tank is 200 mg/L; flux of gas absorption water is 10 t/h.