Section 14. METAL WASTES BIOLOGICAL REMOVAL AND CHEMICAL RECOVERY OF METALS FROM SLUDGES
نویسنده
چکیده
Utilization of sewage sludge on land is an appealing sludge disposal method. The reasons are not just because of the environmental and economic constraints associated with other disposal methods such as incineration and landfilling, but also because the sludge is beneficial both as a soil conditioner and as a fertilizer [1,2]. However, the major limitation with land application of sewage sludge has been the high heavy metals concentration in the sludge. Concern stems from the potential health hazard associated with metal uptake by plants and its subsequent accumulation in the food chain. Reduction of the heavy metal content of sewage sludge could significantly increase the amount of sludge suitable for land application.
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