A wastewater treatment plant processes its mixed sludge by employing the gravity thickening followed by anaerobic digestion. The thickened sludge has a flowrate of 4,000 m³/d at a solids content of 5% and must be conveyed over a 100m-long pipeline (Hazen-William coefficient C = 100) between the gravity thickeners and anaerobic digesters. Size the diameter of the pipe and estimate the friction headloss using both simple multiplication factor method and rheological method, respectively.

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Integrated Solid Waste Management

Integrated Solid Waste Management (ISWM) is a thorough waste suppression, compost, removal and recycling Program. An effective ISWM system considers how to suppress, manage and recycle solid waste in a manner that is most efficiently to protect human health and the surrounding. ISWM system requires evaluation of public wants and demands and then selecting and merging the most effective waste management activities for the proposed demands. The main ISWM activities for solid waste management are Waste prevention, Recycling and Composting, and Combustion and Removal and waste collection in a properly planned, constructed, managed and mitigated landfill areas. Each of these requires careful designing, financing, accumulation, and delivery of activities.