For our purposes, we will . Aerobic (high-rate) pond in which there is no significant anaerobic or sludge zone. The most often used ponds in domestic wastewater treatment are the stabilization pond and facultative lagoon. Sewage or organic waste from food or fiber processing may be catabolized in a system of constructed ponds where adequate space is available to provide an average waste retention time exceeding a month. Waste stabilization ponds consist of man-made basins comprising a single or several series of anaerobic, facultative or maturation ponds. Wastewater treatment - Wastewater treatment - Oxidation pond: Oxidation ponds, also called lagoons or stabilization ponds, are large, shallow ponds designed to treat wastewater through the interaction of sunlight, bacteria, and algae. by the microbial interaction, primarily bacteria and algae. The oxidation pond treatment process is natural, because it uses microorganisms such as bacteria and algae. 2 Facultative lagoon in the treatment system in Wellington, TX, USA. •Oxidation Ponds are large earthen basins in which waste water is treated by natural processes involving bacteria and in many instances algae. Oxidation pond can define as the stabilization pond that stabilizes the domestic, trade, industrial wastes etc. •These are shallow basins used to treat raw water •Rate of waste oxidation is slower in Oxidation Ponds 3. A typical pond is divided into an aerobic surface region consisting of bacteria and algae, an Table 1 Advantages and disadvantages of waste stabilization ponds (Mara et al. Anaerobic waste stabilization ponds have very little dissolved oxygen, thus anaerobic conditions prevail. These include aerobic, anaerobic, and facultative ponds. 1992) generally use the term, “pond.” There are three basic classifications, or types, of ponds utilized for wastewater treatment. Guidelines for the Design, Construction and Operation of Oxidation Ponds – Revised 23rd May 2005 Page 2 Fig 2: Oxidation pond Some ponds have mechanical aerators on them. There are 4 different types of stabilization ponds – Facultative ponds Maturation ponds River purification lakes High-rate aerobic stabilization ponds Based upon the range of biological reactions occurring in pounds there are three types of ponds. Wastewater treatment - Wastewater treatment - Oxidation pond: Oxidation ponds, also called lagoons or stabilization ponds, are large, shallow ponds designed to treat wastewater through the interaction of sunlight, bacteria, and algae. also known as stabilization ponds. by the microbial interaction, primarily bacteria and algae. There are 4 different types of stabilization ponds – Facultative ponds Maturation ponds River purification lakes High-rate aerobic stabilization ponds . A process known as SYMBIOSIS takes place .i.e . this is predominant type of pond in municipal wn. Oxidation ponds (so called facultative or aerobic anaerobic pond in which have the whole range of reaction is present. Oxidation ponds have many advantages. It is the large, shallow ponds having 2-6 feet height of water body. Approximately half of the solid waste left after primary treatment settles out in the oxidation ponds. 3 Oxidation pond 1 in the treatment system in Wellington, TX, USA. stabilization ponds. CHAPTER 9 Ponds and Aerated Lagoons 9.1 General 9.1.1 Applicability ... 9.2.1 Stabilization Ponds Stabilization ponds are facultative and are not artificially mixed or aerated.