USGS Frequently Asked Questions

Question: What methods are being used to control zebra mussels inside power plants?

Answer: There are many methods that have been investigated to help control zebra mussels.  They are listed below in no particular order.  Some methods will work better than others in a particular situation. Chemical molluscicides: Oxidizing (chlorine, chlorine dioxide) and Non-oxidizing Manual removal (pigging, high pressure wash) Dewatering / Desiccation (freezing, heated air) Thermal (steam injection, hot water >32°C) Acoustical vibration Electrical current Filters, Screens Coatings: Toxic (copper, zinc) and Non-toxic (silicone-based) Toxic constructed piping (copper, brass, galvanized metals) Carbon dioxide injection Ultraviolet light Anoxia / Hypoxia Flushing