1 Wastewater characteristics and effluent
Under this group are included Arsenic As Cadmium Cd Chromium Cr Copper Cu Lead Pb Mercury Hg and Zinc Zn These are called heavy metals because in their metallic form their densities are greater than 4g/cc vi pH pH is an indicator of the acidity or basicity of . Boliden Metals for modern lifeMetals for modern life For more than 90 years Boliden has been exploring extracting and processing base metals and precious metals Our production is based on experience innovation and modern technology developed in collaboration with Nordic technology and engineering companies Today we are an industry leader in terms of sustainable . 6 Agricultural use of sewage sludgeResearch carried out in the Carlton Smith 1987 has shown that the amounts of Cd Ni Cu Zn and Pb applied in liquid sludge at three experimental sites could be accounted for by soil profile analyses five years after sludge applications with the exception of Cu and Zn applied to a calcareous loam soil . Zinc toxicity PubMedAlthough consequences of zinc deficiency have been recognized for many years it is only recently that attention has been directed to the potential consequences of excessive zinc intake This is a review of the literature on manifestations of toxicity at several levels of zinc intake Zinc is considZinc toxicity Am J Clin Nutr 1990 Feb;51 2 225 7 doi /ajcn/ Author G J . Alog For Copper Ore Cu Zn Pb PlantIn addition to Pb and Zn the primary ore constituents copper Cu iron Fe and cadmium Cd were also assayed As expected foliar Pb and Zn concentrations were elevated in plants at the sites closest to the mill and km from the mine facility