i. Define BOD and State its general influence on a :ream with low flow rate [2.5 marks]. ii. Discuss the chemistry of suspended solid remova vith focus on coa ulation and flocculation [ 3 marks]. 4b. i. Discuss chemisiry of the removal of dissclved sclids with major ittention on the removal of nitrogen and phosphate [ 5 marks]. ii. In a tabular form, suggest possible recycling or utilization potentials for the following solid wastes: Groundnut shell, Saw mill waste, Coal combustion retude, Lime stone waste, Kiln dust, Quarry dust and Rice husk [7 marks] Resique