ARISTOTLE UNIVERSITY OF THESSALONIKI Dept. of Civil Engineering Division of Hydraulics & Environmental Engineering Laboratory of Environmental Engineering.

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Presentation transcript:

ARISTOTLE UNIVERSITY OF THESSALONIKI Dept. of Civil Engineering Division of Hydraulics & Environmental Engineering Laboratory of Environmental Engineering & Planning Efthymios Darakas Associate Professor

Laboratory methods for Water and Wastewater Quality Assessment (Course description) Physical, chemical and microbiological analyses for the assessment of water and wastewater quality. Use of portable and laboratory analytical equipment. Implementation of the measurements in order to evaluate and asses the efficiency of the water – wastewater treatment processes. 2

3 Laboratory of Environmental Engineering & Planning

4 Acquaintance with the laboratory equipment – Measurements

5

Physical characteristics Conductivity Turbidity Particles Temperature Color Density Odor 6 Solids Insoluble FloatingSuspendedSettleable ColloidsSoluble

Physical characteristics Total Solids (TS) Total Volatile Solids (TVS) Total Fixed Solids (TFS) Total Suspended Solids (TSS) Volatile Suspended Solids (VSS) Fixed Suspended Solids (FSS) Total Dissolved Solids TDS (TS-TSS) Volatile Dissolved Solids (VDS) Fixed Dissolved Solids (FDS) Settleable Solids 7

8 Total Solids Soluble & Insoluble TS Filtration Filter (TSS) Evaporation105 o C TSS Incineration 550 o C VSS TVS FSS TFS Filtrate (TDS) Evaporation 105 o C TDS Incineration 550 o C VDS TVS FDS TFS Evaporation105 ο C TS

Inorganic chemical characteristics 9 pH : -log[H + ] Ammonia (NH 4 + ) Organic Nitrogen (Org. N) Kjeldahl Nitrogen (TKN : Org. N + NH 4 + ) Nitrites (ΝΟ 2 - ) Nitrates (ΝΟ 3 - ) Inorganic Phosphorous (Inorg. P) Total Phosphorous (ΤΡ) Organic Phosphorous (Org. P)

Inorganic chemical characteristics 10 Alkalinity (Σ HCO CO OH - - H + ) Chlorides (Cl - ) Sulfates (SO 4 2- ) Metals (Ca, Mg, K, Na, Cr, Cu, Co, Pb, Cd, Hg, Mo, Ni, Fe, Se, As, Zn) Inorganic elements and compounds Gases (O 2, CO 2, NH 3, H 2 S, CH 4 )

Organic chemical characteristics 11 Biochemical Oxygen Demand (CBOD 5 ) Biochemical Oxygen Demand (ΝBOD) Chemical Oxygen Demand (COD) Total Organic Carbon) TOC Other organic compounds

12

Measurements To be familiar with the laboratory equipment To weigh and prepare solutions 13

Measurements pH Temperature Conductivity / Salinity Dissolved Oxygen Turbidity etc…….. 14

Measurements Jar tests 15

Measurements Filtration TS TSS TDS, etc….. Settleable (Imhoff cone) 16

Measurements BOD 5 COD TOC 17

Measurements Spectrophotometer (Lab instruments, Portable instruments) Nutrients Metals (AAS) 18

Measurements Microbiological 19

Measurements Microscope Toxicity tests (Dafnia magna, Vibrio fischeri) 20

Measurements Hardness Chlorine etc……… 21