The study presents a novel algal biofilm reactor for treatment of variable strength rural and wastewaters and high biomass productivity with accumulation of specialized bio-products. apart from nutrient removal from low strength grey water, developed reactor showed high tolerance to coloured, high tss and high nutrient containing wastewaters (livestock and digestate from biogas plant) which are difficult to treat or requires energy intensive pre-treatments. abr is able to reduce nutrient loading of variable strength wastewaters up to dischargeable limits along with production of biomass diverse in composition. biomass grown in livestock and digestate with high nitrogen content and balanced mineral composition can be used as livestock feed and biofertilizer. grey water grown biomass with high lipid content and balanced biochemical composition can be a suitable biogas feedstock. hence, integration of simultaneous treatment with utilization of wastewater (from households, animal farms and biogas plants) as irrigation water and mass cultivation of algal biomass as biogas feedstock (lipid rich) and cattle feed supplement (protein and carbohydrate rich) and biofertilizer can make a self-sustainable model for rural people.