| 摘要 |
A method for eliminating soluble toxic heavy metals from domestic or industrial waste water, which comprises the following steps: supplying lignocellulosic material with a low moisture content (10% or under), which undergoes a granulometric reduction to a size of less than 1 mm; defining a solid/liquid ratio in an adsorption reactor, wherein the value thereof is dependent on the composition of the liquid waste to be treated, within a range of 3 and 50 g/L; at ambient temperature, placing the liquid to be treated and the lignocellulosic material in said adsorption reactor; and agitating, and adjusting the pH value during the process, wherein said pH is dependent on the composition of the liquid waste to be treated. The pH value is set within a range of pH 3 and pH 8. The liquid to be treated is then maintained in turbulent agitation with the vegetable-matter substrate inside the reactor until the desired concentration values for the metal content of the aqueous medium are achieved. Lignocellulosic material of natural origin, such as waste from the timber industry and/or cellulose industry and agroindustry, forestry industry byproducts and grain industry is used with a view to eliminating soluble toxic heavy metals in waste water. |
