Estimation of Subsurface Pollutant Load and Its Seasonal Variation in an Irrigation Channel

Concentrations of heavy metals in irrigation water and soil were examined to determine the level contamination a particular channel Gazipur, Bangladesh. In this conduit, effluent from households, industries, municipalities was combined with water. The study carried out order estimate pollutant loads along wastewater conceptualize seasonal changes composite wastewaters. A total six nine contaminated samples collected directly area analyzed for project. From February March, before monsoon, pH is too low be used irrigation. At end monsoon season, April through May, all tests within these parameters, making them suitable Considering standard limits, Pb, Cr, Cu concentrations found unsuitable thus problematic soils crops. concentration Cd ranged 27.82 88.36 mg/L, whereas tolerance limit 0.01 mg/L. three places chosen, levels Pb below safe Cr above limit. metal pollution index sites crossed On basis geo-accumulation index, indicates no very high locations. maximum enrichment factor Cd, Cu, which have minor enrichment, Ni, has moderate enrichment. also tried link their deposition temporal variations. revealed that industrial utilized closely related accumulation soils. Since irrigated agricultural are likely exposed harmful wastes, it crucial effluents region Gazipur appropriately controlled.