Constituents of Concern in Wastewater Treatment Tab 2-2 Principal constituents of concern in wastewater treatment Suspended solids can lead to sludge deposition and anaerobic conditions Biodegradable organics composed of proteins carbohydrates and fats and are measured most commonly in terms of bod and cod Pathogens can transmite Communicable disease Priority pollutants include carcinogenicity, metogenicity teratogenicity or high acute toxicity Nutrients lead to the growth of undesirable aquatic life Refractory organics include surfactants, phenols, and agricultural pesticidesConstituents of Concern in Wastewater Treatment Tab 2-2 Principal constituents of concern in wastewater treatment Suspended solids can lead to sludge deposition and anaerobic conditions; Biodegradable organics composed of proteins; carbohydrates and fats ,and are measured most commonly in terms of BOD and COD; Pathogens can transmite Communicable diseases; Priority pollutants include carcinogenicity, metogenicity, teratogenicity or high acute toxicity; Nutrients lead to the growth of undesirable aquatic life; Refractory organics include surfactants, phenols, and agricultural pesticides