BIOFILM ATTACHED CULTIVATION OF SPIRULINA PLATENSIS UNDER LIGHT- EMITTING DIODES (LED) FOR ANAEROBICALLY DIGESTED PIGGERY WASTEWATER

Abstract

In this study the anaerobically digested piggery wastewater containing nitrogen and phosphorus are used for culture media of Spirulina platensis. The cultivation experiments indicated that Spirulina platensis with biofilm attached cultivation grew well in wastewater reaching a biomass of 30.50 g/m2 . Biofilm microalgal systems show efficient nutrient removal from digested piggery wastewater and removal ratios of NH4 + , PO4 -3 , and COD are 70.60, 54.30 and 88.46% respectively. Therefore, it was concluded that efficient biomass production and nutrients removal could be accomplished by biofilm attached cultivation of Spirulina platensis for digested piggery wastewater treatment.