backwash a filter
1Backwash (physical phenomenon) — Backwash is the backwards flow of air or water. Backwash can be created naturally by waves rebounding off a beach or other obstacle. It is created by propulsion devices such as an oar or engine. Unlike a slipstream, a backwash is harder to travel …
2backwash — ack wash , v. t. 1. To clean the oil from (wool) after combing. Ash. [1913 Webster] 2. (Chem.) To clean (a filter, a chromatography column, a water softener, etc.) by passing liquid through in the reverse of the normal direction of flow. This… …
3Backwash — The word Backwash may refer to:* Backwash (geography), the water that rolls back down a beach after a wave has broken * Backwash (physical phenomenon), the backwards flow of air or water * Backwash, the process of thoroughly cleaning a pool… …
4backwash — backwasher, n. /bak wosh , wawsh /, n. 1. Naut. water thrown backward by the motion of oars, propellers, paddle wheels, etc. 2. Aeron. the portion of the wash of an aircraft that flows to the rear, usually created by the power plant. Cf. wash… …
5Water filter — A water filter is a device which removes impurities from water by means of a fine physical barrier, chemical process and/or biological process. Filters are used to cleanse water for irrigation, drinking water, aquariums, and swimming pools.… …
6Sand filter — Sand filters are used for water purification. There are three main types; # rapid (gravity) sand filters # upflow sand filters # slow sand filters All three methods are used extensively in the water industry throughout the world. The first two… …
7environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …
8Swimming pool sanitation — articleissues refimprove = January 2008 technical = August 2008Swimming pool sanitation refers to both visual clarity and levels of microflora, such as bacteria and viruses in swimming pools. The goal of sanitation is to prevent the spread of… …
9Taprogge — GmbH is a medium sized company based in Wetter, Germany. The company is named after founding brothers Ludwig and Josef Taprogge. Founded in 1953, the company is known for its tube cleaning systems for steam turbine condensers, heat exchangers and …
10Coastal management — This article is about coastal management aimed to prevent erosion and flooding. For broader management issues, see Integrated coastal zone management. Oosterscheldekering sea wall, the Netherlands. In some jurisdictions the terms sea defense and… …
- 1
- 2
