Abstract

Poor activated sludge settleability has limited the hydraulic capacity of the biological stage of the extended nutrient removal WWTP of Oresundsverket, Helsingborg, Sweden. The diluted sludge volume index (DSVI) has varied greatly, i.e. 90 to 350 ml/g. During periods with high DSVI the Jenkins filament abundance reached 5 on a scale between 0 and 6. After dosage of poly aluminium chloride to improve the settleability, DSVI decreased to a stable level close to 100 ml/g and filament abundance decreased to 2–3, allowing a greater surface sludge loading of the final clarifiers.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call