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RESEARCH PRODUCT
Control of activated sludge settleability using preaeration and preprecipitation
E. EcheverríaJosé FerrerAurora Secosubject
Environmental EngineeringEcological ModelingEnvironmental engineeringSludge volume indexPollutionActivated sludgePilot plantWastewaterDecantationCost analysisEnvironmental scienceSewage treatmentAerationWaste Management and DisposalWater Science and TechnologyCivil and Structural Engineeringdescription
This paper deals with the addition of a preaeration and a preprecipitation stage to a conventional activated sludge process. The experiments were carried out in a pilot plant using wastewater from the city of Valencia (Spain) as feed. The effect of the F/M ratio and sludge age on sludge settleability was established. In both cases, process stability was observed to increase with respect to the conventional process. Good sludge settleability was thus assured in a greater F/M ratio range. A comparative economic study was also carried out.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-02-01 | Water Research |