A sand filter, or "filtration basin", is a stormwater quality treatment system that works by using a two-component clarification system: the first is a sediment forebay for settling large particles ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Slow sand filtration remains a cornerstone of sustainable water treatment, harnessing both physical and biological processes to improve water quality. Central to this method is the development of a ...

The bio-sand filter is revolutionising water purification in rural India offering increased filtration, better water portability and affordability. Urmila Devi lives in Chaitabazaar village, barely ...