BACKWASHING Meaning and
Definition
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Backwashing is a process commonly used in water treatment and filtration systems to clean and remove accumulated impurities from the filter media. It involves reversing the flow of water through the filter, forcing the trapped debris and contaminants to be expelled from the system.
During backwashing, water enters the system through the outlet pipe and flows in the opposite direction, passing through the filter media from bottom to top. As the water flow is reversed, a hydraulic force is created that loosens and dislodges the accumulated particles and sediment. The water, along with the expelled impurities, is then directed out of the system through a separate drain pipe.
Backwashing is crucial to maintain the efficiency and longevity of filtration systems, as clogged filters can hinder their performance and result in reduced flow rates and water quality. By periodically backwashing, the trapped debris is removed, allowing the filter media to regain its original porosity and effectiveness.
This process is widely used in various applications, including swimming pools, water treatment plants, and industrial filtration systems. The frequency and duration of backwashing depend on the specific filtration system and the water quality being treated. It is often controlled automatically by timers or pressure differentials. Overall, backwashing is an essential maintenance procedure that ensures the continued functionality and efficiency of filtration systems.
Common Misspellings for BACKWASHING
Etymology of BACKWASHING
The word "backwashing" is formed by combining the words "back" and "washing".
The term "back" comes from the Old English word "bæc", which referred to the rear part of the body. Over time, it developed various meanings, including the back side of an object or going in the opposite direction.
The word "washing" comes from the Old English word "wascan", which means to cleanse or bathe. It is derived from the Proto-Germanic word "waskan" and related to the Old High German "waschan".
Combining the two, "backwashing" refers to the act of cleaning or rinsing an object, often a pool or filter system, by forcing water or other fluids in the opposite direction of usual flow. The term is often used in swimming pool maintenance to describe the process of cleaning a pool filter by reversing the flow of water.
