By Mark J. Girovich
This paintings info the commercial, regulatory and environmental safeguard concerns concerning biosolids administration and use. It evaluates present remedy applied sciences and administration techniques for the worthy usage of municipal wastewater residuals. expense information about the relative fiscal advantages of certain reuse and disposal equipment, is gifted.
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Additional resources for Biosolids Treatment and Management (Environmental Science and Pollution Control, 18)
3. 4. Pathoven duction: elimination or reduction to an acceptable level of potential diseasecausingorganisms in biosolids (bacteria, viruses, protozoa, helminths). , rats, insects,flies). Pollutant h t s : pollutants should not exceed lirmts established by federal, state and local regulations. om processing facilities. ) for biosolids used on agricultural and nonagricultural land, sold to the general public, and used as a landfill cover material must also be met. 1. Pathogen Reduction Biosolids which are beneficially used should satisfy pathogen reduction requirements.
S. S BENEFICIAL USES AND PRODUCTS 1. Land Application 2. 1-1 0 Stabilized Biosolids 3. 0 Iacinerahon m e r p v Rccov~y: SteamElectrictiy 4. Conversion to Feel 5. Q&m Building 8t Road Material Component . . Tertiary Solids DISPOSAL Monofilling MSW Co-Landfdlin Incineration without Energy Recovery w * Per million liters of wastewater treated BlOSOLlDS GENERATION, TREATMENT AND USAGE. D 3 Q 36 Girovich of pathogen reduction: Class A and Class B. Class A biosolids are essentially pathogen h e ; Class B biosolids have reduced levels of pathogens, and are subject to use restrictions to prevent immediate and direct public contact [I].
Treatment Processes: An Overview Municipal solids are processed to achieve one or more of the following goals: 39 Biosolids Characterization, Treatment and Use * -- volume (weight) reduction pathogen and vector attraction reduction removal of pollutants and odors energy generation or recovery production of beneficial use products 1. Volume Reduction Volume (weight) reduction is achieved by various types of mechanical water-solids separation techniques (dewatering), drying and incineration. Figure 1-2 illustrates volume (weight) reduction achieved by some commonly employed processes.