Removing Duckweed from a Clarifier
Removing Duckweed from a Clarifier
(OP)
We have a duckweed problem in a 70 ft clarifier. The clarifier is extremely underloaded - 50,000 gpd in a 70 ft clarifier. The flow is from a college student development and the plant is a former textile industry WWTP. The duckweed grew when the clarifier was pumped down for maintenance and then took a long time to fill back up. Does anyone have any thoughts on the best way to get the duckweed out and also to prevent reoccurance? Also, any experiences using diquat?
Thanks,
Paul
Thanks,
Paul





RE: Removing Duckweed from a Clarifier
RE: Removing Duckweed from a Clarifier
Consider installing a cover over the unit.
RE: Removing Duckweed from a Clarifier
Otheriwse exlude light as Bimr suggests, or if your effluent is good enough, buy some Grass Carp who will eat it for you.