Categories: Sewerage | Waste | Waste management | Waste treatment technology | Incomplete lists Activated sludge is a process in sewage treatment in which air or oxygen is forced into sewage liquor to develop a biological floc which reduces the organic content of the sewage. ... Anaerobic digestion is the breakdown of organic matter by bacteria in the absence of oxygen. ... A photo of the anaerobic lagoon at the Cal Poly Dairy taken in 2003. ... A cesspit is a pit, or covered cistern, which can be used for refuse or sewage. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... Composting toilets use biological processes to deal with the disposal and processing of human excrement into organic compost material. ... A constructed wetland is an artificial marsh or swamp, created for human use, such as wastewater, storm water runoff or sewage treatment, as habitat to attract wildlife, or for land reclamation after mining or other disturbance. ... The Imhoff tank is a chamber suitable for the reception and processing of sewage. ... Flocculation refers to a process where a solute comes out of solution in the form of floc or flakes. ... A reedbed in summer In nature, reedbeds are basically ’temporary’ habitats. ... A septic tank is part of a small scale sewage treatment system often referred to as a septic system, which consists of the tank itself and a septic drain field. ... Sequencing batch reactors (SBR) are industrial processing tanks for the treatment of waste water. ... UASB - Upflow Anaerobic Sludge Blanket technology normally referred to as UASB Reactor is used in the treatment of wastewater. ...