2. Coagulation
2.1 Basic principles
The difficulty in separating colloids present in water by simple decantation or filtration stems from the fact that these particles, which are of mineral (clay), plant (humic or fulvic acids, algae), animal (zooplankton), human (fatty suspensions, ERU discharges) or industrial (various types of wastewater) origin, are found in water in the form of very fine electrically charged particles (always negatively charged in natural waters). The mutual repulsion exerted by these particles prevents them from agglutinating under the effect of natural attractive forces (called "van der Waals forces" at this scale) and thus acquiring a sufficient size to become settleable or filterable (figure
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
Coagulation
Flocculation
Article included in this offer
"Environment"
(
516 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
Bibliography
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
