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Comparative Analyses of Conventional and Novel Water Treatment Technologies for Recirculating Greenhouse Fertigation Solutions

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Title: Comparative Analyses of Conventional and Novel Water Treatment Technologies for Recirculating Greenhouse Fertigation Solutions
Author: Levesque, Serge
Department: School of Environmental Sciences
Program: Environmental Sciences
Advisor: Dixon, Mike
Abstract: The reuse of irrigation water allows greenhouse growers to reduce the amount of water and fertilizer used for the development of their crops. Although, there are barriers that limit the widespread adoption of water recirculation which include the proliferation of plant pathogens, accumulation of phytotoxic chemical contaminants and nutrient imbalances. To address these issues, water treatment technologies are needed to disinfect and/or degrade chemical contaminants in order to recirculate irrigation water. The use of electrochemical systems for treating fertigation solutions was explored for overcoming their compatibility in recirculating hydroponics. Studies were performed with a head to head comparison using conventional and novel water treatment technologies for treating fertigation water. All treatment technologies were effective at removing biological and chemical contaminants by varying degrees. Furthermore, greenhouse trials determined that electrochemical water treatment was suitable for cultivating Cyclamen persicum with recirculating the fertigation solution through drip irrigation.
Date: 2019-09-01
Rights: Attribution-NonCommercial-ShareAlike 4.0 International
Terms of Use: All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.

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Files Size Format View Description
R. solani inact ... fertilizer or chloride.csv 1.342Kb Unknown View/Open Figure 3.3 data
Free chlorine g ... rtilizer (no pathogen).csv 6.326Kb Unknown View/Open Figure 3.5 data
R. solani inact ... y presence of chloride.csv 4.202Kb Unknown View/Open Figure 3.4 data
R. solani inact ... chloride concentration.csv 14.48Kb Unknown View/Open Figure 3.6 data
Inactivation of ... 0 ppm chloride 0.5 g:L.csv 18.67Kb Unknown View/Open Figure 3.7 data
(NH4)2SO4 analysis table 2.csv 7.429Kb Unknown View/Open Figure 3.8 data
BDD pathogen inactivation no Cl or fertilizer.csv 3.689Kb Unknown View/Open Figure 4.1 data
BDD with path + fert - Cl.csv 10.58Kb Unknown View/Open Figure 4.2 data
BDD no pathogen experiments.csv 4.232Kb Unknown View/Open Figure 4.3 data
BDD + pathogen + fertilizer + chloride.csv 25.59Kb Unknown View/Open Figure 4.4, 4.5 & 4.6 data
Bioassay data w ... reatment of pesticides.csv 9.868Kb Unknown View/Open Figure 5.12 & 5.13 data
Pesticide standards analysis.csv 3.698Kb Unknown View/Open Figure 5.8 & 5.9 data
BDD bioassay no pesticides (contain chloride).csv 2.664Kb Unknown View/Open Figure 5.10 & 5.11 data
Bioassay with Lemna no treatment.csv 7.260Kb Unknown View/Open Figure 5.4 & 5.6 data
Paclobutrazol BDD recirculated.csv 1.289Kb Unknown View/Open Figure 5.14 data
Greenhouse pathogen inactivation .csv 1.071Kb Unknown View/Open Figure 6.5 data
Cyclamen harvest results data.csv 8.610Kb Unknown View/Open Figure 6.6 data
Cyclamen nutrient anaysis.csv 36.46Kb Unknown View/Open Figure 6.8 - 6.11 data
Levesque_Serge_201909_Msc.pdf 69.37Mb PDF View/Open Thesis manuscript

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Attribution-NonCommercial-ShareAlike 4.0 International Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 4.0 International