6. A tertiary treatment plant treats a municipal secondary effluent and is to employ fixed-bed carbon adsorption columns. Parallel treatment using two rows of two columns in series (in other words, a total of four columns) will be used. From batch-type slurry tests it has been found that 0.42 g COD/g carbon is adsorbed when C₂ = Co. Pertinent data are as follows: flow = 5700 m³/d, COD in feed to carbon columns = 20 mg/L, contact time function based on an empty carbon bed = 30 min, and unit liquid flow rate = 4.4 L/s-m². Each column is kept on-line until the entire mass of carbon in the column is completely exhausted. Determine: The volume of each column, m³. a. b. Page 2 of 3 C. d. e. The diameter and height of each column, m. The mass of carbon in each column if the packed density is 400 kg/m³. The kilograms of carbon exhausted per day if the COD removed is assumed to be 98%. The on-line time for each of the columns.

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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.