In an effort to improve the performance of secondary clarifiers, several changes have been implemented in the design of secondary clarifiers, including: the use of conventional sludge scraping ...

AJ Axtell, Western Lake Superior Sanitary District director of community relations, talks Wednesday while standing outside of the secondary clarifier unit that recently failed. The extent of the ...

Journal (Water Pollution Control Federation), Vol. 51, No. 4 (Apr., 1979), pp. 815-833 (19 pages) Strategies that are proposed for control of the activated sludge process usually are designed to ...

Sealed Bids for construction of the AWWTP Secondary Clarifier Upgrade will be received by the City of Lancaster, PA, at the Office of the City Controller, 120 North Duke Street, 2nd Floor, Lancaster, ...