Patent ID: 9738549
Date: 2017-08-22
CPC Classifications: C02F,Y02W

Claim:
1. A method of treating wastewater comprising the steps of: receiving an influent of wastewater into a wastewater treatment system, the wastewater treatment system having at least one anoxic or anaerobic section and at least one aerobic section; processing the wastewater in the at least one anoxic or anaerobic section and in the at least one aerobic section to produce sludge containing biosolids; diverting a portion of the biosolids containing sludge to a plug-flow type reactor; introducing ozone to the biosolids containing sludge in the plug-flow type reactor to cause lysis of the biosolids in the sludge; and returning a portion of the ozonated sludge to the at least one anoxic or anaerobic section of the wastewater treatment system wherein a chemical oxygen demand to nitrogen ratio of material in the anoxic or anaerobic section is increased to greater than about 4:1 to aid in denitrification of the wastewater in the anoxic or anaerobic section of the wastewater treatment system.