Wetland Assimilation of Treated Municipal Effluent: Wetland Restoration & Improved Water Quality in Louisiana Dr. Rachael ...
 
 
 
 
 
 
 
Criteria for the use of Wetlands for  Municipal Effluent Assimilation   <ul><li>Effluent is treated, disinfected, and no t...
 
 
 
<ul><li>Monitoring </li></ul><ul><li>Water level and hydrology. </li></ul><ul><li>Water quality: NO x , NH x , TN, PO 4 , ...
 
 
 
 
 
 
 
 
 
Conclusions <ul><li>Wetland assimilation of municipal effluent is a proven method of wetland restoration, as well as water...
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Rachel Hunter

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Rachel Hunter

  1. 1. Wetland Assimilation of Treated Municipal Effluent: Wetland Restoration & Improved Water Quality in Louisiana Dr. Rachael Hunter 1,2 , Dr. John W. Day 1,2 , Dr. Robert R. Lane 1,2 , Joel Lindsey 1 . Montgomery Hunter 1 & Jason Day 1 1 Comite Resources, Inc., Zachary, LA 2 School of the Coast & Environment, LSU, Baton Rouge, LA
  2. 9. Criteria for the use of Wetlands for Municipal Effluent Assimilation <ul><li>Effluent is treated, disinfected, and no toxic inputs. </li></ul><ul><li>Sheet-flow hydrology (minimal channels and no short-circuits). </li></ul><ul><li>Appropriately sized wetlands: low nitrogen and phosphorus loading rates. </li></ul><ul><li>Monitoring ecosystem response in receiving wetlands, as well as non-impacted reference sites. </li></ul>
  3. 13. <ul><li>Monitoring </li></ul><ul><li>Water level and hydrology. </li></ul><ul><li>Water quality: NO x , NH x , TN, PO 4 , TP, TSS, </li></ul><ul><li>D.O., salinity, BOD, and fecal coliform. </li></ul><ul><li>Vegetation species composition and productivity </li></ul><ul><ul><li>Stem growth (tree diameter)‏ </li></ul></ul><ul><ul><li>Leaf fall (litter boxes)‏ </li></ul></ul><ul><li>Soils: bulk density and heavy metal concentrations </li></ul><ul><ul><li>Benthos is no longer monitored due to high seasonal and spatial variability, and lack of statistically significant trends in past monitoring and research. </li></ul></ul><ul><ul><ul><li>Assimilation wetlands have typical benthic species composition found throughout coastal Louisiana. </li></ul></ul></ul>
  4. 23. Conclusions <ul><li>Wetland assimilation of municipal effluent is a proven method of wetland restoration, as well as water quality improvement. </li></ul><ul><li>Municipal effluent positively effects wetlands by: </li></ul><ul><li>Increasing vegetative productivity </li></ul><ul><li>Increasing organic matter deposition </li></ul><ul><li>Increasing wetland surface elevation, counteracting high regional subsidence </li></ul>

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