hon The oxidation ditch consists of o ring or ovol-shaped channel equipped evices promote unidirectional ho provide m025030m/ How by a foctor of 20-30. As a result, the process kinetics approach that of ele-mix reactor, but with plug the do concentration decreases and ush-type or surf nd aeration(see applications, and in (k)OrbaN The Orbal process is a variation of the oxidation ditch and uses o series rger ower ho and mixed liquor flows typically toward the centor of f concentric 少 tome the Obal design Bionutro My imi s p 4.3 m te in the first channel so thot both nitrification and denitrification (ar wyahermis employed in wh om 0.7 to 1.0 mg m)Biolac process Bioloc is a proprietary process that combines long solids the basin by the air released from the diffusers. Aero the air Howrate to each geration chain, Either an internal or extemal clarifier con be used Seque Y oP The SBR is o fill-and-draw type of reactor systom involving a single cur For 凵凵L least 2 re used so that one basin is in the hill mode while the oth cles per day: o ypical cyde may consist of 3-h fia le step may also be included to prowide fexibility at high flow,Mixed ng rs see Sec. 5-12 in Chap. 5). Separate mixing provides operating Flexibility and Hol Batch decant reacor, intermittent cycle extended aeration sysiem(ICEASTM) The ICEAS developed in Australia, is another type of SBR ed for nel so the row does not disturb the mi during the setting and fp) Cyclic activated-sludge system (CAASTM) The CAAS chree baffled zo vied iao ecde er is fed continuously while the effuent is removed on a batch 7-207-20