Lecture

Wastewater Treatment I

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In course

ENV-167: Introduction to environmental engineering

Key themes in environmental science and engineering will be show-cased, with examples - from equator to the poles - including atmospheric processes and climate change, water quality, energy resources and urban development, with the amazing technologies use ...

Description

This lecture covers the principles of wastewater treatment, including the calculation of critical distances downstream for minimum dissolved oxygen, removal of BOD in sewage, and the impact of oxygen-demanding wastes on water quality. It also discusses the biological treatment of wastewater, the efficiency of BOD removal, and typical pollutant concentrations in urban wastewater.

Instructors (5)

Christof Holliger

Expertise BioremediationWastewater treatmentAnaerobic digestionBiogas and biofuelEnvironmental microbiologyMicrobial Ecology Teaching & PhD Past EPFL PhD Students Doulaye Koné, Katia Szynalski, Karin Kaufmann, Christian Balsiger, Julien Maillard, Enrique Lara, Benoît Zen-Ruffinen, François-Nicolas de Glutz, Laure Prat, Noam Shani, Samuel Lochmatter, David Gregory Weissbrodt, Elsa Marina Lacroix, Aamani Rupakula Boyanapalli, Géraldine Florence Buttet, Aline Sondra Adler, Mathilde Stéphanie Willemin, Lorenzo

David Andrew Barry

Research InterestsSubsurface hydrology, constructed wetlands, ecological engineering, in particular contaminant transport and remediation of soil and groundwater; more generally, models of hydrological and vadose zone processes; application of mathematical methods to hydrological processes; coastal zone sediment transport, aquifer-coastal ocean interactions; hydrodynamics and modelling of lakes.

Tamar Kohn

2014 - present Associate Professor, EPFL and adjunct researcher, Eawag 2007 - 2013 Assistant Professor, EPFL 2004 - 2006 Postdoctoral researcher, UC Berkeley 2000 - 2004 PhD, Environmental Engineering, Johns Hopkins University 1999 Diploma, Environmental Sciences, ETHZ

Anders Meibom

Anders Meibom obtained his PhD in physics from the University of Southern Denmark in 1997. This was followed by two and a half years of PostDoc work at the Hawaii Institute for Geophysics and Planetology, where he conducted mineralogical studies of primitive chondritic meteorites. From 2000 to 2005, he was Research Associate in the Geological & Environmental Sciences, Stanford University, where he represented Stanford in the USGS-Stanford ion microprobe laboratory. In 2005, he became proifessor at the Muséum National dHistoire Naturelle in Paris. From 2006 to 2011 he was the director of the French national NanoSIMS laboratory. Since January 2012, he is professor at the EPFL in the School of Architecture, Civil and Environmental Engineering (ENAC). From April 2014, he is professor ad personam at the Institute of Earth Sciences, University of Lausanne.

Athanasios Nenes

Official source

Ontological neighbourhood

Environmental science

Pollution: Water pollution

Related concepts (32)

Secondary treatment

Secondary treatment (mostly biological wastewater treatment) is the removal of biodegradable organic matter (in solution or suspension) from sewage or similar kinds of wastewater. The aim is to achieve a certain degree of effluent quality in a sewage treatment plant suitable for the intended disposal or reuse option. A "primary treatment" step often precedes secondary treatment, whereby physical phase separation is used to remove settleable solids.

Industrial wastewater treatment

Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment. Some industrial facilities generate wastewater that can be treated in sewage treatment plants.

Water quality

Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which compliance, generally achieved through treatment of the water, can be assessed. The most common standards used to monitor and assess water quality convey the health of ecosystems, safety of human contact, extent of water pollution and condition of drinking water.

Rotating biological contactor

A rotating biological contactor or RBC is a biological fixed-film treatment process used in the secondary treatment of wastewater following primary treatment. The primary treatment process involves removal of grit, sand and coarse suspended material through a screening process, followed by settling of suspended solids. The RBC process allows the wastewater to come in contact with a biological film in order to remove pollutants in the wastewater before discharge of the treated wastewater to the environment, usually a body of water (river, lake or ocean).

Decentralized wastewater system

Decentralized wastewater systems (also referred to as decentralized wastewater treatment systems) convey, treat and dispose or reuse wastewater from small and low-density communities, buildings and dwellings in remote areas, individual public or private properties. Wastewater flow is generated when appropriate water supply is available within the buildings or close to them. Decentralized wastewater systems treat, reuse or dispose the effluent in relatively close vicinity to its source of generation.

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Water and Wastewater Treatment: Introduction

Covers the basics of water and wastewater treatment, including the history of wastewater treatment, undesirable pollutants, and treatment performance.

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Explores biological nutrient removal in wastewater treatment, covering nitrogen and phosphorus removal, activated sludge process, nitrification, denitrification, and phosphorus recovery.

Wastewater Treatment II

Delves into advanced wastewater treatment processes, including oxygen demand, phosphate removal, and biological nitrogen removal, addressing the challenges of micropollutants.

Wastewater Treatment: Nutrient Removal Strategies

Covers effluent analysis, dephosphatation design, and WWTP dimensioning using various treatment strategies.

Wastewater Treatment: Nutrient Removal