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Information Journal Paper

Title

A Study on the efficiency of phytoremediation in removing water salinity in artificial surface wetland

Pages

  342-356

Abstract

 Materials and methods: In this research, nine numbers of systems were built and urban water flow was established continuously from December 2019 to June 2014. All systems were planted in the soil with different densities of 10, 20, 30 and 40 cm. The selected hydraulic retention time was 5 days, and for each retention time, this experiment was repeated in three stages, for six months. The concentration of calcium, magnesium, potassium, chlorine, carbonate, bicarbonate and EC input to the systems and their output were measured and the concentration changes were compared using SAS statistical software.Results: The comparison results of the average density of plant cultivation, changes in temperature, month, and their interaction in the efficiency of removing Salinity parameters were observed to be significant at the 95% confidence level. Comparing the average effect of temperature on Salinity removal showed a significant difference between the efficiency of Salinity removal in some months of the year. The interaction effect showed that the highest Salinity removal efficiency equal to 17.75% was obtained in the retention time of five days in the soil cultivation system and in July.Conclusion: According to the results, it can be said that the highest average for the EC parameter occurred in December at a density of 40 cm and the lowest average value for a density of 20 cm occurred in April.

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