Page 27 - Simplified Wastewater Treatment Fundementals_Trickling Filters.exe

Trickling Filters

Each day, Operations must monitor the Trickling Filter for the following issues,

and resolve (as suggested here):

1. Watch for ponding at the surface of the Trickling Filter. If ponding, pick up surface

debris and flush ponding areas using a hose.

2. Keep an eye on the distribution arm to ensure it is moving. Note: If flow driven, the

speed of the arm will alert the Operator to abnormally high or low flow. Mechanical

issues (clearance issues, erratic movement, vibration, noise, etc.…) should be

promptly addressed.

3. Look for free flowing distribution nozzles. Clogged nozzles will require the operator to

clean to reestablish proper flow.

4. Monitor the underdrain system for even flow. View the perimeter channel of the

Trickling Filter to ensure the flow leaving the filter is even. A partially clogged

underdrain will result in low flow, or no flow seen in one or more place as the Operator

walks around the perimeter of the Trickling Filter. If reduced flow or no flow is

observed, the Operator should flush out the accumulated humus in the underdrain.