Sand filters are commonly applied in drinking water treatment and can efficiently remove suspended solids, organic matter, and microorganisms from source water. During the process, particulate matter ...

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 ...

Backwashing sand filters gives rise to maintenance problems because the sand undergoes volume expansion. Knowing, with a fair amount of precision, how the sand will behave, therefore, can be helpful.

Mineral coatings on sand particles actually encourage microbial activity in the rapid sand filters that are used to treat groundwater for drinking, according to a paper. These findings resoundingly ...

The Metropolitan Sanitary District of Greater Chicago constructed a full-scale tertiary treatment facility at its Hanover Park plant to supply design, operating, and cost criteria. This paper is based ...

WASHINGTON, DC – OCTOBER 10, 2014 - Mineral coatings on sand particles actually encourage microbial activity in the rapid sand filters that are used to treat groundwater for drinking, according to a ...