Needs and Strategies for Genetic Control: Municipal Wastes
Municipal wastes mainly consist of sewage, sludges generated from treatment of sewage, and refuse. All three types of waste are generated whenever sizable numbers of people live together; treatment and disposal are usually considered a municipal problem, even though private firms sometimes carry out the operations. Table 1 lists approximate values for the total masses of sewage, sludge, and refuse generated annually by all Americans. Although the waste materials have small economic value, their very large mass generation rates make them of major economic significance to the local economy. For urban areas and towns, treatment and disposal often are functions performed by local or regional governmental agencies.
KeywordsBiomass Nickel Methane Phosphorus Sulfide
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