USE OF REFLECTION OF LASER FOCUSED FLOCCULANTS FOR SELECTION IN DAIRY WASTE TREATMENT

Abstract

This paper presents methodology for optimal flocculant selection in the treatment of the dairy wastewater. The methodology for flocculant selection and flocculation optimization consists of three stages: preliminary flocculant selection, optimization of the selected flocculant dosage is compared using the same dosage resulting from optimization. FBRM technique allows monitoring flocculation of particles and lactose colloids in milk industry wastewaters. Non ionic flocculants were not able to induce the flocculation of these wastewaters. Very high molecular weight and medium charge density anionic flocculants, especially Magnafloc LT-27, induced the fastest flocculation process to form the largest flocs. Optimal dosage of Magnafloc LT-27 was 5 mg/l as it induced the fastest and highest flocculation.