Patent ID: 6090294
Filing Date: 2000-07-18
Classification: C02F

Abstract:
A water purification apparatus for treatment of contaminated water, said water purification apparatus comprising in combination:a plurality of longitudinally extending contact columns, each of said contact columns having a closed top-portion, a closed bottom-portion, and an interior space therein, wherein first and second contact columns of said plurality of contact columns are joined together in parallel to define a pair of contact columns, wherein said pair of contact columns are connected in series to a third contact column;a contaminated water source connected in fluid flow communication with said pair of contact columns;a ozone supplier means disposed between the contaminated water source and said pair of contact columns whereby ozone may be introduced into the contaminated water flow;an ozone source connected in fluid flow communication with said pair of contact columns via said ozone supplier means and said third contact column via an ozone feed line;a means for pressurizing each of said contact columns to a positive pressure;a water recycle control means for determining whether the contaminated water is to be recycled through the water purification apparatus;whereby said gas and water flow countercurrent to each other in said plurality of pressurized contact columns such that ozone is dissolved in said water and whereby the contamination level of the water is automatically monitored and treatment adjusted and continued until the desired purification level is obtained.