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AECOM office building in Markham, Ontario, Canada. AECOM (/ eɪ.iːˈkɒm /, ay-ee-KOM; formerly AECOM Technology Corporation; stylised AΞCOM) is an American multinational infrastructure consulting firm headquartered in Dallas, Texas. AECOM has approximately 51,000 employees, and is number 291 on the 2023 Fortune 500 list. [5]
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.
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.
The Cybernetic Culture Research Unit (CCRU) was an experimental cultural theorist collective formed in late 1995 at Warwick University, England [1] and gradually separated from academia until it dissolved in 2003. It garnered reputation for its idiosyncratic and surreal "theory-fiction" which incorporated cyberpunk and Gothic horror, and its ...
Metcalfe's law. Two telephones can make only one connection, five can make 10 connections, and twelve can make 66 connections. Metcalfe's law states that the financial value or influence of a telecommunications network is proportional to the square of the number of connected users of the system (n 2). The law is named after Robert Metcalfe and ...
The EPA storm water management model (SWMM) is a dynamic rainfall-runoff-routing simulation model used for single event or long-term (continuous) simulation of runoff quantity and quality from primarily urban areas. The runoff component of SWMM operates on a collection of subcatchment areas that receive precipitation and generate runoff and ...
K1 MBBR carrier with biofilm. Moving bed biofilm reactor (MBBR) is a type of wastewater treatment process that was first invented by Professor Hallvard Ødegaard at Norwegian University of Science and Technology in the late 1980s. [1] The process takes place in an aeration tank with plastic carriers that a biofilm can grow on.