What do you know about coagulation? Can it be applied to cleanse turbid water?

Most of the rural areas in the “Developing countries” depend on surface water such as irrigation channels or open ponds for their drinking and other domestic uses. Towards the end of the cultivation season, the water supply in the irrigation channels is occluded, the water then becomes shallow and turbid, and by the end of rainy season the remaining water in the surface which collected in surface depressions (open ponds) becomes depleted by vaporization. Both water sources ultimately become turbid and contaminated, which constitutes a hazard for rural inhabitants.

This warrants upgrading water quality through purification, decreases of turbidity, and removal of pathogens.

The turbidity of surface water is increased when rain water runs across the surface of the ground, forming open pools in surface depressions. The rain water picks up many substances such as suspension materials, collided materials, minerals, salts, organic and inorganic materials. This provides a perfect medium and adsorption site for chemicals, causing organic and biological reactions which result in aesthetically undesirable tastes and odor. Also the turbid water provides a perfect medium for the growth of all type of microorganisms and pathogens which are responsible for causing the people the majority of diseases and infection.