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George Tchobanoglous was born in the United States to Greek immigrant parents. [3] He received a BS in civil engineering from the University of the Pacific, an MS in sanitary engineering from the University of California, Berkeley, and a PhD in environmental engineering from Stanford University. [2] Rolf Eliassen was his PhD adviser at Stanford.
In 2000, AECOM acquired Metcalf and Eddy, a water and wastewater engineering firm based in Massachusetts, [13] and in September, 2004 it acquired the Canadian company, UMA Engineering Ltd. [14] AECOM went public during May 2007 with an initial public offering on the NYSE, netting $468.3 million. [15]
Sewage sludge treatment describes the processes used to manage and dispose of sewage sludge produced during sewage treatment. Sludge treatment is focused on reducing sludge weight and volume to reduce transportation and disposal costs, and on reducing potential health risks of disposal options. Water removal is the primary means of weight and ...
From 2001 to 2004, he worked as a senior technical specialist with the engineering firm, Metcalf and Eddy (now part of AECOM). From 2004 to 2005, he was a research associate at Virginia Polytechnic Institute and State University. Chandran joined Columbia University in 2005 as assistant professor of Environmental Engineering.
In fluid dynamics, the mixing length model is a method attempting to describe momentum transfer by turbulence Reynolds stresses within a Newtonian fluid boundary layer by means of an eddy viscosity. The model was developed by Ludwig Prandtl in the early 20th century. [1] Prandtl himself had reservations about the model, [2] describing it as ...
The Monod equation is a mathematical model for the growth of microorganisms. It is named for Jacques Monod (1910–1976, a French biochemist, Nobel Prize in Physiology or Medicine in 1965), who proposed using an equation of this form to relate microbial growth rates in an aqueous environment to the concentration of a limiting nutrient. [1][2][3 ...
A meltwater stream 2 nautical miles (3.7 km; 2.3 mi) west of Marble Point on the coast of Victoria Land. It issues from the front of Wilson Piedmont Glacier and flows northeast to Surko Stream just west of where the latter enters Arnold Cove. Named by Nichols for Donald G. Ball, soil physicist with Metcalf and Eddy. [5]
Topsoil runoff from farm, central Iowa (2011). Water pollution in the United States is a growing problem that became critical in the 19th century with the development of mechanized agriculture, mining, and industry, although laws and regulations introduced in the late 20th century have improved water quality in many water bodies. [1]