Search the forum,

slow dry

Slow sand filters are used in water purification for treating raw water to produce a potable product. They are typically 1 to 2 metres deep, can be rectangular or cylindrical in cross section and are used primarily to treat surface water. The length and breadth of the tanks are determined by the flow rate desired by the filters, which typically have a loading rate of 200 to 400 litres per hour per square metre (or 0.2 to 0.4 cubic metres per square metre per hour).
Slow sand filters differ from all other filters used to treat drinking water in that they work by using a complex biological film that grows naturally on the surface of the sand. The sand itself does not perform any filtration function but simply acts as a substrate, unlike its counterparts for UV and pressurized treatments. Although they are often preferred technology in many developing countries because of their low energy requirements and robust performance, they are also used to treat water in some developed countries, such as the UK, where they are used to treat water supplied to London. Slow sand filters now are also being tested for pathogen control of nutrient solutions in hydroponic systems.

View More On Wikipedia.org
Recent contents Top users
  1. D

    Slow dry solvent cement for ABS

    Hi, does anyone know of a slow dry/cure solvent cement for ABS waste pipes please? Got some 50mm floplast ABS waste pipes in a tricky ceiling that will be a pain to get the cement on, line up and push together before the normal solvent cement goes off - in the 15 seconds you get to fit them...
    • DaveTaylor1174
    • Thread
    • abs america cement slow slow dry solvent solvent cement usa
    • Replies: 3
    • Forum: USA
Creating content since 2001. Untold Media.

Newest Plumbing Threads

Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock