Patent ID: 7335308

Claim:
A method for treatment of liquids, including contaminated water containing contaminants, the method comprising the steps of: prepurifying the contaminated water by mixing a foaming reagent therewith to obtain prepurified water; and performing a main purification process using the prepurified water, the main purification process comprising the steps of: foaming the prepurified water together with ionization radicals within a perforated drum scrubber, whereby the contaminants are oxidized to produce sludge, wherein the ionization radicals are obtained from gas formed during the main purification process; defoaming the resultant foam to obtain defoamed water; ionizing the defoamed water to obtain purified water; causing the sludge to settle in the purified water; collecting the sludge and purified water in a same unit; applying physical afterpurification to the purified water; and removing the sludge, wherein the foaming, the defoaming, the oxidization, the ionization, and the sludge and purified water collection steps are performed in the same unit in a vertical sequence, one under the other, such that the resultant foam and liquid flows under the force of gravity during the main purification process.