For certain water sources, organic coagulants are more appropriate for solids – liquid separation. Generally, organic
coagulants are used when sludge generation is desired. Furthermore, blended organic and inorganic chemicals are
often more effective than either organic or inorganic coagulants alone. The correct blend can often combine the
advantages of using the sweep-floc mechanism of the inorganic coagulant with the sludge generation characteristics
of the organic coagulants.