Glossary

Brackish water: is water that has more salinity than fresh water, but not as much as seawater.

Black water: is a term used to describe sewage coming from toilets.

Acronym of Biochemical Oxygen Demand. It measures the amount of oxygen required by the biochemical waste water purification processes or better the amount of oxygen consumed in mg / l, during some ...

A polluting chemical product or compound which, when dispersed in the environment, easily decomposes into less polluting compounds, thanks to the action of bacteria or other microorganisms.

Thin film of microorganisms adhered to an inert solid support immersed in a liquid growth medium.

Mixture of various types of gas, mainly composed of methane, produced by bacterial fermentation in the absence of oxygen (anaerobiosis) of organic residues from plant or animal residues