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Use the simple trickling filters calculator tool to calculate the typical dosing rates for your wastewater problems. To optimize the treatment performance of a trickling filter, there should be a continual and uniform growth of biomass and sloughing of excess biomass; to achieve uniform growth and sloughing, higher periodic dosing rates are required. The required dosing rate in inches per pass of distributor arm may be approximated using the following: Dosing rate = (organic loading, lb/103 ft3d) * (0.12)

Typical Dosing Rates for Trickling Filters

Organic loading lb BOD5/103ft3d (kg/m3d)	Dosing rate
25 (122.2)	3 (7.6)
50 (244.3)	6 (15.2)
75 (366.5)	9 (22.9)
100 (488.7)	12 (30.5)
150 (733.0)	18 (45.7)
200 (977.4)	24 (60.9)