activated-sludge method
11Hydropolitics in the Nile Basin — Essay like|article|date=December 2007The Nile River is subject to political interactions. It is the world s longest river flowing 6,700 kilometers through ten countries in northeastern Africa – Rwanda, Burundi, Democratic Republic of the Congo… …
12Stabilization pond — technology sometimes also called facultative pond technology is a natural method for wastewater treatment. TechnologyStabilization ponds consist of shallow man made basins comprising a single or several series of anaerobic, facultative or… …
13Combined oral contraceptive pill — (COCP) Background Birth control type Hormonal First use ? …
14Simultaneous nitrification-denitrification — (SNdN) is a wastewater treatment process. Microbial simultaneous nitrification denitrification is the conversion of the ammonium ion to nitrogen gas in a single bioreactor. The process is dependent on floc characteristics, reaction kinetics, mass …
15Biochemical oxygen demand — or Biological Oxygen Demand (BOD) is a chemical procedure for determining how fast biological organisms use up oxygen in a body of water. It is used in water quality management and assessment, ecology and environmental science. BOD is not an… …
16Sedimentation (water treatment) — Sedimentation is a physical water treatment process used to settle out suspended solids in water under the influence of gravity.[1] Contents 1 Basics 2 Applications 2.1 Potable Water Treatment …
17Ultrasound — Not to be confused with Supersonic .Ultrasound is cyclic sound pressure with a frequency greater than the upper limit of human hearing. Although this limit varies from person to person, it is approximately 20 kilohertz (20,000 hertz) in healthy,… …
18Robust statistics — provides an alternative approach to classical statistical methods. The motivation is to produce estimators that are not unduly affected by small departures from model assumptions. Contents 1 Introduction 2 Examples of robust and non robust… …
19SAS — or SAS may refer to: Military * Special Air Service, the principal special forces unit of the British Army * Australian Special Air Service Regiment, Australian regiment derived from the British Army regiment * New Zealand Special Air Service (NZ …
20Mitigation of peak oil — The standard Hubbert curve, plotting crude oil production of an oil well or oil field over time …
