Application of residual sludges from wastewater treatment technologies for construction of biofertiliser

To stimulate plant development in phytoremediation or the cultivation of non-food crops potentially contaminated soils, a biotechnologically created product could be applied. The aim this study was to explore possibility creation biofertiliser, based on activated sludge combined with bacterial strain detoxifying and growth promoting properties. presented is focused effect phenol following concentrations: 5 mg/l, 100 250 500 mg/l 1000 metabolic activity Brevibacillus laterosporus BT271 . gradual increased concentration used mineralised B. CTC/DAPI staining showed high bacteria even at highest concentration. greatest amount biomass accumulated (4.44 × 10 7 cells/ml). At toxicant concentration, total dehydrogenase 5.72 -4 μg H+/ml*min found. Studies microorganisms experiments involving combination sludge, three concentrations (5 mg/l) value for variant average phenolic (up 6.39 -6 H+/ml*min. results proved detoxification potential when different were present. selected highly active biodegrading valuable properties keep these potentials up 1000mg/l phenol.