L16_Typical_Wastewater_Plant_Layout

L16_Typical_Wastewater_Plant_Layout - Typical Wastewater...

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Unformatted text preview: Typical Wastewater Plant Layout EVEG 3110 Updated Fall 05 Wastewater Composition - Physical Pollutant Conc. (mg/L) Total Suspended Solids (TSS) 220 Volatile (VSS) 165 Fixed (FSS) 55 Total Dissolved Solids (TDS) 500 Volatile (VDS) 200 Fixed (FDS) 300 Grease 100 Temperature 10 - 25 o C Color Grey (fresh) - Black (old) (Metcalf & Eddy, 1991) Wastewater Composition - Chemical Pollutant Conc. (mg/L) BOD 5 220 COD 500 TOC 160 Total N-N 40 Organic N-N 15 Free ammonia N-N (TAN) 25 Nitrite-N &Nitrates-N Total P-P 8 Organic -P 3 Inorganic P-P 5 Alkalinity (as CaCO 3 ) 100 (Metcalf & Eddy, 1991) Goals of Wastewater Treatment Reduction of the organic load of the wastewater effluent to limit eutrophication [BOD limits] Reduction of microbial contamination that may transmit infectious diseases Reduce the inorganic material in the wastewater to limit impacts on the environment Contaminants Removed During Wastewater Treatment Sand, grit, debris Suspended particles BOD - organic matter Odor, color Bacteria, viruses, protozoan parasites Ammonia, nitrate Phosphate Specific chemicals Wastewater Treatment Processes Preliminary Treatment is a physical process that removes large contaminants Primary Treatment involves the physical sedimentation of particles Secondary Treatment involves physical and biological treatment in order to reduce the organic load of wastewater Tertiary Treatment or Advanced treatment aims to reduce nutrient levels (N & P) Wastewater Treatment Scheme...
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This note was uploaded on 05/20/2010 for the course EVEG 3110 taught by Professor Malone during the Spring '10 term at LSU.

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L16_Typical_Wastewater_Plant_Layout - Typical Wastewater...

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