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Planning and Conducting a Screening Experiment for Studying the Electrical Conductivity of Water under Electrohydraulic Shock

From the analytical review, it was found that there are 12 factors that affect the composition of water for preparing a nutrient solution of protected ground: water pH, nitrates, nitrites, water color, electrode material, chamber volume, electrode area, macronutrients, microelements, water source, water treatment time (solution) and pathogenic microflora. (Research purpose) The research purpose is in design of an experiment plan and conducting it, searching for significant factors. (Materials and methods) There are three introduced fictitious factors for the Plakett-Berman plan, so the number of experiments was 16. Equi-plus (liquid) was added to regulate the pH of water, calcium nitrate (granules) was added to increase nitrates, and nitrites were increased by sodium nitrate (granules). (Results and discussion) The color of water was determined using the analytical center for water quality of Ecodar, the volume of water was regulated by a scale in the working body, the area of the electrodes was changed by replacing one element with another. The amount of macronutrients were varied with granules of iron chelate, micronutrients were varied by granules of boric acid, the processing time of the electrohydraulic setup was controlled by a mechanical stopwatch, pathogenic microflora of water was measured using the appliance EnSURE hygiene, the water conductivity is measured by ATLANT 1212. The variance coefficient was calculated and the T-test was used to determine the significance of the factors. (Conclusions) During the experiment of the Plakett-Berman plan for screening, significant factors for the response of electrical conductivity are: the presence of macronutrients; the presence of pathogenic microflora. It is impractical to discard the pH factor, as it does not affect the amount of electrical conductivity of the solution.