The positive charge of the inorganic coagulant neutralizes the negative charge of the particles in the water, causing the particles to aggregate. During the coagulation process, flocs grow to a limited size, depending on pH, temperature, dose, shear rates, and the type of coagulant used. Coagulation can successfully remove a large amount of particles (including most of the microplastics) and dissolved matter from water. In many applications, such as phosphorus removal from wastewater, chemical treatment using an inorganic coagulant has been shown to deliver better results than any other method.
Coagulants are especially recommended for: