APPLICATION OF BAC - BSF TECHNOLOGY TO TREAT WASTEWATER FROM SONG THAN 1 INDUSTRIAL PARK FOR REGENERATION PURPOSE

Abstract

This research aims to assess the efficiency of the BAC-BSF combination model
(including biological activated carbon (BAC) column and followed by bio-sand filter (BSF)) for treatment of wastewater from Song Than 1 industrial zone for purpose of regeneration. Research results showed that hydraulic capacity of 1-3 m3/m2h can be selected for water recycling because this load was the result of relatively good and stable process, COD ratio was 78.2% (15.0 ± 5.0 mg/L), color 81.2% (18 ± 5 Pt-Co), total nitrogen 58.7%, total phosphorus 61.2% (5.0 ± 1.0 mg/L), the hydraulic load rate at 2 m3/m2h. When applying BAC-BSF in recycling wastewater of Song Than 1 Industrial Zone, the treated wastewater can meet the recycled water quality requirements at low and medium level, but the values of coliform and color are still high. Therefore, to apply the post-treated water for high-quality regeneration, there’s a need to increase the removal of total organic carbon (TOC), color and turbidity before entering BAC.

Keywords: Biological activated carbon (BAC), bio-sand filter (BSF), wastewater reuse