Tóm tắt:

Application of recirculating filter wastewater model combined with colloidal clay of Kabenlis 3 (one of the kinds of Kabenlis compounds by created by Doctor Le Ngoc Ninh, Vietnam) helps reduce pollution levels, improve environmental improvements. In detail, amount of TSS decreased from 255 mg/l to 30.02 mg/l, archived 88.22 % efficiency; BOD5 decreased from 380.60 mg/l to 49 mg/l reached 87.12 % efficiency; phosphate decreased from 25.6 mg/l to 9.68 mg/l reached 62.18 % efficiency; Nitrate decreased from 70.6 mg/l to 48.23 mg/l reached 31.68 % efficiency; and Coliform reduced from 6300 MPN/100 ml to 4,700 MPN/100ml reached 25.39 % efficiency. This can be considered as a new solution to help people save resources, and sustainably use natural resources.