All over the world, millions of sand filters are regularly backwashed to clear out the dirt that has accumulated in the course of normal operation. This sand filter flushout process may use 200 gallons of water or more, depending on who is doing it and how long it takes to run clear. That 200-gallon backwash is 99% clean water, and a relatively small amount of dirt.
(Sediment Retention Vessel) is used to separate particles from pool backwash water, by allowing the solids to settle to the bottom, recycling off for WateReuse of the particle-free part of the liquid.Sedimentation - The process of allowing particles in suspension in water to settle out of the suspension under the effect of gravity. The particles that settle out from the suspension become sediment, and in pool water we are able to capture/contain the sediments in lower portion of tank.Retention - is the act or condition of keeping or containing something. The S.R.V. is capturing water and sediments from backwash. Vessel - also called settling tank, clarifier or Decanting area, component of a modern system of water supply or wastewater treatment. An S.R.V. allows suspended particles to settle out of water or backwash as it flows slowly through the tank cycle, thereby providing extreme degree of purification.Backwash - backwashing is a form of preventive maintenance so that the filter media can be reused.
● Clean pool filters over a container and allow the waste to settle out. Dry out the residue. Dispose of solids by bagging and placing in the trash.
● Never clean filters or discharge backwash into gutter, street or storm drain.City of West sacramento, California