ADDIS ABABA: Sanitation Status
Sanitation provision in Addis Ababa (the capital of Ethiopia) is grossly deficient, as in most cities in sub-Saharan Africa: most people do not have access to a hygienic toilet; large amounts of faecal waste are discharged to the environment without adequate treatment; this is likely to have major impacts on infectious disease burden and quality of life (Hutton et al. 2007). This article briefly summarizes the current sanitation situation in Addis Ababa.
Activated Sludge Process
Activated sludge (AS) is a process dealing with the treatment of sewage and industrial wastewaters and developed around 1912-1914. There is a large varity of design, however, in principle all AS consist of three main components: an aeration tank, which serves as bio reactor; a settling tank ("final clarifier") for seperation of AS solids and treated waste water; a return activated sludge (RAS) equipment to transfer settled AS from the clarifier to the influent of the aeration tank.
IWA Publishing joins the Independent Scholarly Publishers Group, adding 12 journals and Water Intelligence Online to the collection
We are pleased to announce that IWA Publishing has joined the Independent Scholarly Publishers Group (ISPG). Dragonfly provides global sales representation for the ISPG, a consortium of 23 health sciences, life sciences and environmental sciences...