12. Anaerobic wastewater treatment processes are characterized by the
13. Why is the "trickling filter" actually a misnomer?
Because the action is not physical as in a conventional filter, but
Because the effluent does not trickle, but is distributed by a rotating arm or
a fixed spray.
14. How do high capacity trickling filters differ from low capacity filters?
They are much larger in diameter.
The wastewater is applied at a higher rate of flow.
Schmutzdecke is retained on the filter medium for longer periods of time.
Wastewater which has already passed through the filter is recirculated.
15. What is the significance of the Psychoda filter fly?
It is related to the Phlebotomus fly.
It is an annoyance to plant personnel.
The larvae interfere with biological action in the filter.
Heavy infestations of larvae may clog trickling filter medium.