Nutrient Removal and Recovery from Stormwater Using Water Treatment Residual Coated Woodchips

Stormwater discharge from transportation, municipal and agricultural sources may contain various pollutants that can deteriorate water quality of receiving water bodies and threaten public health. Nitrate and phosphate are two important nutrients identified in stormwater runoff. Elevated nutrient levels in surface waters can lead to eutrophication and frequent harmful algal blooms. Woodchip bioreactors have been used to remove nitrate from stormwater runoff. However, woodchips are not effective at phosphate removal. Water treatment residuals (WTR) are sludge produced during coagulation and flocculation processes during drinking water treatment. WTRs typically contain large amounts of aluminum, iron, or calcium compounds with high phosphate adsorption capacity. The objective of this project is to investigate the performance of WTR coated woodchips for nitrate and phosphate removal from stormwater runoff and evaluate the recovery potential of phosphate adsorbed by WTRs. Laboratory batch and column experiments will be conducted to evaluate factors that affect nitrate and phosphate removal by WTR coated woodchips. The phosphate desorption potential of WTR coated woodchips will also be determined. The results of this project can lead to the development of a new, low-cost technology for sustainable nutrient management in stormwater runoff.


  • English


  • Status: Active
  • Funding: $195439
  • Contract Numbers:


  • Sponsor Organizations:

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Managing Organizations:

    Mountain-Plains Consortium

    North Dakota State University
    Fargo, ND  United States  58108
  • Project Managers:

    Tolliver, Denver

  • Performing Organizations:

    Dept. of Civil and Environmental Engineering

    South Dakota State University
    Brookings, SD  United States 
  • Principal Investigators:

    Hua, Guanghui

    Schmit, Christopher

  • Start Date: 20210521
  • Expected Completion Date: 20240731
  • Actual Completion Date: 0
  • USDOT Program: University Transportation Centers Program
  • Source Data: MPC-656

Subject/Index Terms

Filing Info

  • Accession Number: 01773711
  • Record Type: Research project
  • Source Agency: Mountain-Plains Consortium
  • Contract Numbers: 69A3551747108
  • Files: UTC, RIP
  • Created Date: Jun 5 2021 3:37PM