Answer Happy

1) Give one (1) the impact of the following constituents in wastewater effluents on the environment and propose two (2) methods for removal of each of the constituents from wastewater: 1. Biodegradable organic materials ii. Suspended solids III. Pathogens IV. Nutrients V. Heavy metals 2) You have been appointed as the Environmental Engineer for a project aimed at reducing pollution of water bodies from wastewater discharges. Wastewater from a municipality under your jurisdiction is therefore to be treated by conventional means. Provide a treatment scheme for the wastewater. 3) With the aid of a diagram(s), explain the treatment mechanism in facultative ponds and the diurnal variations in dissolved oxygen and pH that may occur in the pond. 4) An anaerobic pond has been constructed to treat wastewater from 50,000 students residing in hostels at Kotei. If the BOD contribution of each student is 50g/person/year determine the following: ar day o i. The volume of the pond 11. How long the anaerobic pond can operale before desludging if the prevailing temperature is 20°C and sludge accumulation rate is 0.04m/person/year. A₂ = 0.027-¹1