Constructed Wetlands for Metals Removal

by Charles R. Williams,

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water


Constructed wetlands have the potential to trap and remove metals contained in wastewater. Long term removal is expected to occur by accumulation and burial in the plant detritus in a manner similar to the removal of phosphorus. A free water surface constructed wetlands has been in operation at the Sacramento Regional Wastewater Treatment Plant treating municipal secondary effluent since the spring of 1994. Data for 13 metals are presented for the operating period from March 1994 to December 1995. Significant removal of silver, lead, and zinc is indicated from preliminary results.

Subject Headings: Wetlands (fresh water) | Wastewater management | Water treatment plants | Water treatment | Wastewater treatment plants | Phosphorus | Nutrient pollution | California | United States

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