After the quartz sand filter has been working for a period of time, there are many fine particles between the gaps of the sand, such as mud, organic matter and other impurities, if backwashing is not carried out, the mud and sand will block the water through, so that the flow is also reduced and the effect of the water cannot be achieved. Therefore, the quartz sand filter must be backwashed after a period of time, how long is the backwashing time of the quartz sand filter?
How long does it take to backwash a quartz sand filter, there is no fixed time for preparation, depending on the specific situation, we are equipped with a pressure gauge in the inlet and outlet water, generally the pressure difference of 1 kg must be backwashed and positive washing, backwashing time is generally in 3-5 minutes, positive washing 2-3 minutes.
The above is the introduction of quartz sand filter backwashing time, but if the quartz sand filter appears backwashing times frequently, the effective operation period becomes shorter; backwashing after the start of normal flow, immediately after the flow decreases, we should replace the filter media in a timely manner.
