A steady-state model for aerobic biological treatment: Part 1

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Chemical Engineering (New York); (United States)

OSTI ID:5563912

McHarg, W H ^[1]

---

1. Amoco Chemical Co., Naperville, IL (United States)

In the aerobic biological treatment of wastewater, microorganisms use oxygen to decompose organic contaminants. Carbon dioxide, water and biosolids -- or sludge -- are the primary products. After a predetermined time in the reactor or aeration basin, the sludge is either removed from the process or sent to a clarifier, where it settles. Some of this sludge is recycled back to the aeration basin to initiate further oxidation, and some is removed from the process. In many aerobic processes, the average retention time of the sludge in the aeration basin -- called the sludge age -- is the main design parameter. However, other parameters, such as the rate of oxygen transfer rates and the capacity of the clarifier can affect the quality of the effluent. A simple mathematical model can be used to calculate these parameters.

• OSTI ID: 5563912
• Journal Information: Chemical Engineering (New York); (United States), Journal Name: Chemical Engineering (New York); (United States) Vol. 100:12; ISSN CHEEA3; ISSN 0009-2460
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
AEROBIC DIGESTION
BIOCONVERSION
CHEMICAL OXYGEN DEMAND
DIGESTION
FLOW RATE
HYDROGEN COMPOUNDS
LIQUID WASTES
MATHEMATICAL MODELS
OXYGEN COMPOUNDS
PARAMETRIC ANALYSIS
WASTE WATER
WASTES
WATER
WATER TREATMENT PLANTS