Global perspectives on methane and hydrogen sulfide -- Municipal sludge digestion -- Microbial proximity and propionate implications -- Biogas utilization -- H2S odor generation problems and prevention -- Concrete corrosion problems and prevention -- Odor and corrosion prevention by superoxygenation -- The industrial process -- Perspectives on biological treatment -- Principles of anaerobic treatment -- Operational considerations -- Treatability protocol -- Biomass immobilization -- Reactor configuration comparisons -- Bicarbonate alkalinity -- Trace metals -- Toxicity response -- Sulfide production -- Refractory organics,