Study on bioretention for stormwater management in cold climate, part II: water quality

Author:

Kratky Hannah12,Li Zhan3,Yu Tong3ORCID,Li Xiangfei4,Jia Haifeng5

Affiliation:

1. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada

2. Stantec Consulting Ltd., Edmonton, Alberta, Canada

3. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada

4. Drainage Planning, EPCOR, Edmonton, Alberta T5J 3A3, Canada

5. School of Environment, Tsinghua University, Beijing 100084, China

Abstract

Abstract Typical continental, cold climate conditions were applied to four large, laboratory columns to simulate temperatures ranging from −20 to +20 °C over summer, winter, and spring runoff. The goal of this research was to assess the seasonal effectiveness of bioretention application in cold climate regions that are currently experiencing the impacts of climate change. 1.6 years’ worth of equivalent Edmonton precipitation volume was applied over a 10-month period to evaluate the water quality improvement through two soil types (i.e., loam and sandy loam) with and without amendments intended to enhance nutrient removal. During summer, excellent removal of total suspended solids (TSS), phosphate, and ammonium (i.e., ≥90% average concentration reduction) was observed in both the loam and sandy loam columns without the nutrient removal amendments. The columns containing the amendments also reduced TSS, ammonium, and phosphate, but not as effective as the non-amended columns for TSS and ammonium. During winter and spring runoff, if infiltration occurs, physical removal of TSS, phosphate, and ammonium was still achieved, only days after the complete freezing (and subsequent thawing) of bioretention media at −20 °C. After an initial maturation and leaching period, nitrate was well removed (≥65.2% average concentration reduction) via denitrification in the columns with the nutrient removal amendments and submerged zone.

Funder

Natural Sciences and Engineering Research Council of Canada

Queen Elizabeth II Graduate Scholarship

Publisher

IWA Publishing

Subject

Management, Monitoring, Policy and Law,Atmospheric Science,Water Science and Technology,Global and Planetary Change

Reference59 articles.

1. Impacts of frozen soils on the performance of infiltration treatment facilities

2. “Modified Kelowna” test for available phosphorus and potassium in soil

3. BC Ministry of Environment 2009 Strong Acid Leachable Metals (SALM) in Soil, Version 2.0. Contaminated Sites Regulation – Analytical Method 8. Lands and Parks [WWW Document]. Available from: https://www2.gov.bc.ca/assets/gov/environment/research-monitoring-and-reporting/monitoring/emre/methods/bc_lab_manual_salm_method.pdf.

4. The influence of temperature on nutrient treatment efficiency in stormwater biofilter systems

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