Design and Control of an Activated Sludge Process for Municipal Wastewater Treatment

摘要

A steady-state computer model has been developed for a conventional activated sludge wastewater treatment system for use in selecting the least cost system design that would satisfy a set of fixed effluent quality standards. Alternative designs slightly more expensive than least cost design but which might offer superior overall plant performance may also be treated by the model. Optimization studies on a plant to treat 20,000 cubic meters/day (5.3 MGD) medium strength domestic wastewater were conducted by simple enumeration. Computer designs were generated for combinations of percent primary suspended solids removal, mixed liquor volatile suspended solids, and sludge age. System design can be specified on the basis of best effluent quality or best plant stability to diurnal loading variations without paying a large cost penalty. A dynamic computer model of a conventional activated sludge process was also developed for use in comparing alternative control strategies and alternative plant designs. (Copyright (c) Robert B. Paterson, 1980.)