Secondary clarifiers are a critical element in a wastewater treatment process. They provide an important gravity thickening function for the mixed liquor (ML) to produce thickened return biological solids to aeration basins and to prevent solids loss to the final effluent. For many wastewater treatment facilities, secondary clarifiers are often the bottle neck of the treatment system. The peak capacity of the clarifiers is impacted by many factors, such as system biomass inventory, ML settling characteristics, and clarifier physical geometry. In this paper, a sludge state point analysis was used for planning a clarifier stress test. Based on the results of the state point analysis, a series of hydraulic stress tests were successfully conducted which demonstrated the testing clarifiers had a capacity to handle two times the design peak flow without elevated secondary effluent total suspended solids if the system solids inventory was controlled at the desired level. The test results rationally matched the state point analysis prediction. The important conclusions from the stress tests can provide critical information for developing facility expansion plan and de-bottlenecking plant peak capacity, as well as for optimizing performance during peak wet weather operation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.