The main purpose of a sand filter is to collect stormwater, rid it of pollutants, and then discharge the water into the storm sewer system. First, water is routed from an impervious surface to the ...

If you’re thinking of adding a swimming pool to your backyard, you’ll quickly discover there are three main types of pool filters. They’re not interchangeable; each operates differently, and ...

In an effort to safeguard the region’s drinking water from wildfire-related contaminants, the Portland Water Bureau is advancing its filtration capabilities to better prepare for future environmental ...

eg by filtration, crystallisation, distillation or chromatography. The method chosen depends upon the type of mixture. A mixture of iron filings and sand can easily be separated using a magnet.

The arrow indicates the direction of water flow. Biofilters contain filter medium grains (e.g., sand, granular activated carbon) that are covered with biofilms. The biofilm activities break down ...