Enhanced Bio-flocculation Combined Process which integrated the advantange of biological flocculation and adsorption and biofilm has such characteristics: no need to add chemicals,fast start-up, a certain effect of nitrogen and phosphorus removal, high efficiency, small area, low cost and easy management ,good practicability and superiority and so on.

Bioflocculation intensified primary treatment technology was characterized by followings: without the addition of medicament, smaller quantity of sludge yielded compared with chemical flocculation technology, with little aeration to restore the activity of sludge, and low cost in operation.

Enhanced flocculation treatment of slightly polluted raw water;

Treatment of electronics acid cleaning wastewater with enhanced flocculation/biological contact oxidation process;

However,the flocculation mechanism and the reason that cationic polyelectrolytes have the good efficiency and the specialization in enhanced flocculation haven't been clearly illustrated.