Expertise

Research Interests/ Projects

  • Struvite recovery from dairy manure;
  • Ammonia recovery from dairy manure;
  • Engineered ecosystems for water quality improvement -- constructed wetlands, gravel biofilters, and stabilization ponds;
  • Simultaneous nitritation and anammox in engineered ecosystems;
  • Anaerobic digestion of food waste and dairy manure;
  • Wood leachate treatment in subsurface flow wetlands in colder climates;
  • Aquatic microbial ecology of natural and engineered systems.

Research Areas

  • Ecological engineering and sustainable wastewater treatment (constructed wetland and similarly constructed ecosystems, anammox-based nitrogen removal processes, treatment mechanisms);
  • Environmental engineering and resource recovery from bioresidues (anaerobic digestion, ammonia recovery, struvite recovery, kinetics and microbial ecology of treatment systems, slow pyrolysis and biochar)

Research:

  • Sustainable Wastewater Treatment & Resource Recovery from Biowastes
  • Ammonia Recovery From Digestate and Wastewater
  • Struvite Recovery from Digestate and Wastewater
  • Anaerobic Digestion
  • Pyrolysis of Biowastes for Water Treatment and Reuse
  • Sustainable Wastewater Treatment
    • Low-dissolved oxygen biological nitrogen removal
    • Using hydrogen peroxide to enhance nitrification in constructed wetlands
    • Constructed wetlands as a green infrastructure
    • Enhancing anammox in constructed wetlands & biofilters for low-energy N removal
    • Constructed wetlands for wastewater reclamation
    • Vegetated submerged beds for treatment of wood leachate
    • Pebble/Sand filters for solid-liquid separation
    • Inventory of greenhouse gas emission from constructed wetlands

Links

Organizational Affiliations

Department of Environmental Resources Engineering, Academic Departments and Divisions, College of Environmental Science and Forestry

Education

Civil (Environmental) Engineering
2006, PhD, University of British Columbia, Canada
Environmental Geosciences
1990, MS, Beijing Normal University, China
Geography
1984, BS, Shaanxi Normal University, China