Inventors:
V. Dean Adams - Logan UT
James H. Reynolds - Layton UT
Assignee:
International Environmental, Inc. - Salt Lake City UT
International Classification:
C02F 172, C02F 152
Abstract:
Wastewater is continuously disinfected by combining the wastewater with sufficient acid to reduce the pH of the wastewater to less than about 4 and with sufficient SO. sub. 2 that the wastewater has a selected free SO. sub. 2 content of at least 5 mg/liter. The combined SO. sub. 2 /wastewater is maintained at the selected free SO. sub. 2 content for at least about 5 minutes. The wastewater can be treated by dissolving SO. sub. 2 into a first portion of the wastewater and combining the first portion with SO. sub. 2 dissolved therein with a second portion of the wastewater stream. SO. sub. 2 can be stripped from the wastewater, and the stripped SO. sub. 2 can be recycled.