This manual gives the processes and products where different metals are used in order that potential sources of metals in combined wastewater residues may be identified. Potential problems in disposal of these residues are identified. Most metals are toxic to plants or animals at some concentration and, therefore, pose potential environmental or health problems. Disposal practices, incineration, landspreading, landfilling, and encapsulation are discussed. Limiting concentrations of potential problem metals are given for incineration and landspreading.

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