Okla. Admin. Code tit. 252, ch. 656, app A - Design Tables

OAC 252:656-13-2(c) Aerated Grit Chambers:

Grit Chamber Measurement Unitsa
Item	Unit	Range
Detention time at peak flowrate	Minutes	2-5
Dimension - Depth	Feet	7-16
Dimension - Length	Feet	25-65
Dimension - Width	Feet	8-23
Width to Depth Ratio	Ratio	From 1:1 to 5:1
Length to Width Ratio	Ratio	From 3:1 to 5:1
Air Supply per unit of Length	Feet3 per minute per foot	3-8

^aChart from 1 Wastewater Engineering: Treatment, Disposal & Reuse, Metcalf & Eddy, Inc., 4^th Edition, (2003)

OAC 252:656-16-1(d)(1), Activated Sludge Aeration Basins:

AERATION TANK CAPACITIES & PERMISSIBLE LOADINGS FOR ACTIVATED SLUDGE PROCESSES
Type of Process	Aeration Retention timeb	Aeration Basin Loadingc	F/M Ratio
(Hours)	(lb BOD5 per 1,000 ft3/d)	(lb BOD5/lb MLSS)
Conventional	6-8	30-40	0.25 - 0.50
Step Aeration	6-8	30-50	0.17-0.50
Extended Aeration/Oxidation Ditch	24	12-15	0.05-0.10

^bLarger values for smaller plants, up to 5,000 "PE" design capacity

^cLarger values for larger plants, over 5,000 "PE" design capacity

OAC 252:656-16-2(b), Trickling Filter Design:

DESIGN PARAMETERS FOR TRICKLING FILTERS
Hydraulic Loading		Organic Loading
gal/ft2/day	Million gallons/acre/day	Ibs BOD5/1000 ft3 of media/day	lbs BOD5/acre-ft of media/day
Standard Rate	45-90	2-4	5-12	218-523
High Rate	230-690	10-30	30-100	1300-4300

Notes

Okla. Admin. Code tit. 252, ch. 656, app A

Added at 17 Ok Reg 1140, eff 6-1-00; Revoked and reenacted at 23 Ok Reg 937, eff 6-15-06; Revoked and reenacted at 28 Ok Reg 1282, eff 7-1-11

Adopted by Oklahoma Register, Volume 32, Issue 23, August 17, 2015, eff. 9/15/2015