The role of growth media on composition, bioconversion and susceptibility for mild thermal pre-treatment of waste activated sludge

The highly variable characteristics of waste activated sludge (WAS) hinder the comparison experimental results on WAS bioconversion between different studies that use excess from origin. Sludge grown under laboratory conditions with synthetic wastewater as feed showed high resistance to commonly applied pre-treatment techniques, such thermal pre-treatment. However, a distinctly higher this was recorded compared full-scale treatment plant (WWTP). observed casted concern suitability laboratory-based data for practice. physicochemical and biochemical both lab-grown are dependent or growth media which sludges were grown. objective study formulate medium into shows similarity coming specific WWTP in response technique. More specifically, we targeted formation slowly-biodegradable is similarly responsive mild H2O2 addition. By comparing real wastewaters, discussed various constituents may lead degree recalcitrance produced sludge. We then formulated medium, fed lab-scale reactor evaluated nutrient removal capacity, well cultivated before after Finally, modified provoke change proposed resulted (195 ± 3.7 NLCH4/kgVSadded) an increase methane production 9 %, similar WWTP. It concluded not only but also determined by composition media.