Investigating the application of different proportions of wastewater on the soil Nickel concentration

Saeideh Heydari¹ Mohammad Ali Hakimzadeh²

1) M.Sc. Student, School of Natural Resources & Desert Studies, Yazd University, Yazd, Iran
2) Professor, School of Natural Resources & Desert Studies, Yazd University, Yazd, Iran

IOI Code : XGKE-KFCAG
Publication : Green Management of Wastes and Biotechnology(gmbtuma.ir)
Abstract :
    Due to the increase in the urban population and lack of water resources, the use of wastewater has expanded, but the long-term use of unconventional water reduces the capacity of the soil to store heavy metals, and these elements can enter the underground water or as soil solutions. Absorption will penetrate the plant, and then it will enter the human body. In this research, in order to investigate the amount of nickel metal in experimental soil in the form of a completely randomized design with four irrigation treatments including 100% wastewater (W100), 100% city water or control (T100), 75% wastewater and 25% city water (W75+ T25) and 50% of wastewater and 50% of urban water (W50+T50), was implemented in three repetitions. After the end of treatment with wastewater and extraction of soil extract, the amount of nickel metal was determined by atomic absorption device. The obtained results showed that the highest amount of nickel concentration is related to W50+T50 and W75+T25 treatment, which was not statistically different from W100 treatment. And the lowest amount of nickel was related to T100 treatment, according to WHO standards(0-10ppm), this increase in the amount of nickel in soil is not alarming and does not endanger the health of the soil, but over time due to the accumulation of these metals There will be consideration and the necessary arrangements for the use of wastewater should be considered in the discussion of soil pollution.

Keywords : wastewater soil pollution heavy metals