Wastewater cleanup: Put activated-sludge treatment to work
- Pollution Control, Inc., Florence, KY (United States)
- Diffused Gas Technologies, Inc., Cincinnati, OH (United States)
Strict wastewater treatment and discharge limits continue to challenge wastewater treatment systems. For industrial wastewater, the selected system must not only meet regulatory requirements, but must also be flexible enough to handle the variations in volume, flowrate and pollutant load that typify industrial effluent streams. At existing industrial sites, the selection of a wastewater treatment system is also impacted by constraints, such as limited space or the desire to minimize downtime or process interruptions. Meanwhile, for municipalities, wastewater treatment requirements are often made or complicated by the need to add a disinfection step to destroy waterborne pathogens in the discharge stream. Biological treatment processes, based on the use of activated sludge, have long been used to degrade organic contaminants in municipal and industrial wastewater. For years, the sequencing batch reactor (SBR) has been used to treat wastewater using activated sludge. However, in recent years, the variable depth reactor (VDR) has emerged as an alternative system, by addressing some of the shortcomings of the SBR.
- OSTI ID:
- 136705
- Journal Information:
- Environmental Engineering World, Journal Name: Environmental Engineering World Journal Issue: 6 Vol. 1; ISSN EEWOFR; ISSN 1079-3186
- Country of Publication:
- United States
- Language:
- English
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