Efficiency and Sustainability of Urban Wastewater Treatment with Maximum Separation of the Solid and Liquid Fraction

Wet air oxidation of resorcinol as a model treatment for refractory organics in wastewaters from the wood processing industry

“…However, small on-site treatment plants have a higher recycling potential (Bieker et al, 2010). Another strategy favours anaerobic treatment instead of energy-intensive aerobic processes (Diamantis et al, 2011;Descoins et al, 2012). For example treating industrial effluents anaerobically allows a saving of around 11.6 GJ in the form of biogas produced per Mg of COD degraded.…”

Approaches to energy and resource recovery from municipal wastewater

“…The dose of chemicals is the main factor affecting the performance of COD capture by CEPT. Typically, iron and aluminium salts, or organic polyelectrolytes, are used at the doses of 100 mg/L, 80 mg/L and 0.5-4 mg/L, respectively (Diamantis et al, 2011). It should be noted that the actual dosage of a coagulant is dependent on the wastewater composition.…”

“…It should be noted that the actual dosage of a coagulant is dependent on the wastewater composition. It has been found that 70-80% of COD, 90% of suspended solids and 90% of phosphorus together with some heavy metals can be removed through CEPT (Diamantis et al, 2011), while up to 50% of soluble COD could also be captured via adsorption of bioflocs. Moreover, integrated CEPT with dissolved air flotation could lead to more efficient harvesting of highly concentrated sludge, favouring subsequent AD for improved biogas production.…”