Water filter

Filters use sieving, adsorption, ion exchanges, biofilms and other processes to remove unwanted substances from water.

Unlike a sieve or screen, a filter can potentially remove particles much smaller than the holes through which its water passes, such as nitrates or germs like Cryptosporidium.

Dirty water is pumped via a screen-filtered flexible silicon tube through a specialized filter, ending up in a container.

A new and advanced water purification system using reverse osmosis (RO) technology ensures 99.9% sterilization, effectively removing bacteria, viruses, dissolved salts, and heavy metals.

The RO process provides high precision filtration, typically down to 0.0001 microns, ensuring the removal of harmful contaminants while preserving the purity of water for safe consumption.

The process and its meaning vary from setting to setting: a manufacturer of aquarium filters may claim that its filters perform water polishing by capturing "micro particles" within nylon or polyester pads, just as a chemical engineer can use the term to refer to the removal of magnetic resins from a solution by passing the solution over a bed of magnetic particulate.

[12] Hindus heated dirty water by boiling it and exposing it to sunlight or dipping it seven times in hot pieces of copper, then filtering it through earthen vessels and cooling it.

"The filters would have removed harmful microbes, nitrogen-rich compounds, heavy metals such as mercury and other toxins from the water".

In the late 19th century, Louis Pasteur's theory of the particulate pathogen finally established a causal relationship between microorganisms and disease.

An intermittent slow sand filter was constructed and operated at Lawrence, Massachusetts in 1893 due to continuing typhoid fever epidemics caused by sewage contamination of the water supply.

[19] The first continuously operating slow sand filter was designed by Allen Hazen for the city of Albany, New York in 1897.

[21] In 1924, John R. Baylis developed a fixed grid backwash assist system, which consisted of pipes with nozzles that injected jets of water into the filter material during expansion.