Keywords: biomineralisation, dye waste, starch effluent, HUASBR, anaerobic digestion, acidogenic reactors, methanogenic reactors, dyes, colour removal, biogas generation, COD removal, chemical oxygen demand, wastewater treatment, hybrid upflow anaerobic sludge blanket
Biomineralisation of dye waste in a two-phase hybrid UASB reactor using starch effluent as a co-substrate
Starch and dye wastes have wide variation in their characteristics were treated on combination; this new technology supports the effective utilisation of starch waste in destruction of dyes. In this investigation, a lab-scale two-phase HUASBR was used at ambient temperature. After start-up, the dye and starch effluent were mixed at different proportions and fed into the reactor. The reactor was operated with an OLR of 8 kg. COD/m³.d and HRT of 12 h. The high COD (96%), colour removal (97%) and a biogas generation of 24.5 l/d were achieved with a 40/60 ratio of dye and starch effluent.