DIFFUSED AERATION DESIGN GUIDE

DIFFUSED AERATIONDESIGN GUIDEINTRODUCTIONT hose involved in the DESIGN of DIFFUSED AERATION equipmentfor wastewater treatment should understand the impact thatprocess type, maintenance issues and economicconsiderations can have on the selection of equipment. Likemany other engineering challenges, these factors arefrequently interrelated and trade-offs of one aspect versusanother are required for most application. This DESIGN guidepresents information that has been obtained and developedfrom a variety of sources. Some of this information hasbeen developed from actual test data, some is condensedfrom other published sources, some is based on goodengineering judgement and practical field experience. Theinformation, formulas, values and methods, etc. should beviewed as a DESIGN aid and may not be applicable in allsituations. The designer should always use goodprofessional engineering judgement for every following sections of this DESIGN GUIDE will brieflydiscuss the activated sludge process and biological treatmentoxygen demands.

consumed at a wastewater treatment plant. Oxygen must be provided in biological wastewater treatment systems to satisfy several types of demands. One demand is that associated with the oxidation of organic or carbonaceous materials. Carbonaceous oxygen demand is associated with two cellular functions: cell synthesis and endogenous respiration.

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