Removal of Nutrients and COD in Wastewater from Vietnamese Piggery Farm by the Culture of Chlorella vulgaris in a Pilot-Scaled Membrane Photobioreactor

The treatment of nutrients and organic contaminants in wastewater using microalgae has drawn significant interest thanks to its advantages environmental friendliness, low cost, CO2 emission reduction, recycling valuable biomass. Among other algae species, Chlorella sp. showed good vitality, simplicity cultivation, high nutrient accumulation harsh conditions wastewater. In this study, vulgaris was inoculated a membrane photobioreactor (MPBR) with piggery digestate investigate the C. growth rate removal efficiency chemical oxygen demand (COD). results indicated that cultivation an MPBR system exhibited continuous simultaneous NH4+, PO43?, COD from two-fold diluted Both depended on liquid hydraulic retention time MPBR. highest NH4+ (74.55%), PO43? (70.20%), (65.85%) obtained longest HRT 5 days biomass concentration around 1.1 g/L. washout phenomenon negligible system. Compared batch mode, could achieve similar much shorter time.