W. Va. Code R. agency 64, tit. 64, ser. 64-47, tbl. 64-47G

Current through Register Vol. XLI, No. 50, December 13, 2024

Table 64-47G - PERMISSIBLE AERATION TANK CAPACITIES AND LOADINGS

Process	Aeration Tank Organic Loading--lb.BOD5***/day per 1000 cu. ft.	F/M Ratio lb.BOD5***/day per lb.MLVSS	MLSS* mg/litter
Conventional step aeration complete mix	40	0.2-0.5	1000-3000
Contact stabilization	50**	0.2-0.6	1000-3000
Extended aeration 3000-5000 oxidation ditch	15	0.05-0.1
*MLSS values are dependent upon the surface area provided for sedimentation and the rate of sludge return as well as the aeration process.
**Total aeration capacity, includes both contact and reaeration capacities. Normally the contact zone equals 30 to 35% of the total aeration capacity.
*******BOD5 or BOD₅is the scientific method used to accurately measure dissolved oxygen consumption, by comparison of dissolved oxygen in a sample at the beginning and at the end of a five-day period.