Journal
WATER SCIENCE AND TECHNOLOGY
Volume 73, Issue 3, Pages 479-485Publisher
IWA PUBLISHING
DOI: 10.2166/wst.2015.499
Keywords
algae biomass production; ammonia removal; landfill leachate; nitrogen removal; wastewater treatment
Funding
- Environmental Research and Education Foundation
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A remediation system for the removal of nitrogen from landfill leachate by a mixed algae-bacteria culture was investigated. This system was designed to treat leachate with minimal inputs and maintenance requirements, andwas operated as an open semi-batch reactor in an urban greenhouse. The results of this study showed a maximumnitrogen removal rate of 9.18 mg N/(L.day) and maximum biomass density of 480 mg biomass/L. The ammonia removal rates of this culture increased with increasing initial ammonia concentration; maximum nitrogen removal occurred at an ammonia concentration of 80 mg N-NH3/L. At starting ammonia concentrations above 80 mg N-NH3/L a reduction in nitrogen removal was seen; this inhibition is hypothesized to be caused by ammonia toxicity. This inhibiting concentration is considerably higher than that of many other published studies.
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