| 摘要 |
<p>Method and apparatus for treating sewage destined for discharge into the sea. The fluid treatment process comprises conducting the sewage through bar racks, and degritters (3) to remove large scale particles, extracting intermediate size particulate material in a rotary drum screen (5), introducing a chemical composition into the fluid to promote coagulation of particles having an average particle size of less than about 1 micron, filtering the fluid containing said coagulated particles through a deep bed multimedia filter (9), adjusting the quantity of dissolved oxygen in the filtrate to a predetermined level and discharging the oxygenated fluid to the sea some distance offshore to permit dispersal of any remaining contaminants by action of wind and currents. </p> |
