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Similar a Flow: Water Science 101
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Flow: Water Science 101
- 1. Gushing Over Water #FLOW Pressure & Flow 2013 Scott Guglielmino Product Manager, La Marzocco USA @scottflex
- 2. FLOW: What we will talk about • What is water • The water cycle • Why baristas should care • Water hardness • Corrosion • Common water questions • Your questions about water
- 3. FLOW: The Personification • Makes friends easily • Never alone, never wanders away • Always pulling others in • But always a distinct individual Life of the party: The Universal Solvent
- 4. FLOW: Hydrological Cycle Source: http://www.physicalgeography.net
- 5. FLOW: Water Sources Source: http://wi.water.usgs.gov
- 6. FLOW: Environmental factors of water Vegetation Acrid
- 7. FLOW: Environmental factors of water Granite & Sand Limestone & Other Hardness Minerals
- 8. FLOW: Aquifers and you Source: http://wi.water.usgs.gov
- 9. FLOW: Aquifers and you
- 10. FLOW: Water Hardness (Scale)
- 11. FLOW: Water Hardness (Scale) Source: espresso-restorations.com
- 12. FLOW: Water hardness Concentration of Hardness as Calciium Carbonate (mg/Liter) Source: www.water.usgs.gov
- 13. Defining Hard Water Soft 0 to 60 mg/L as calcium carbonate Moderately 61 to 120 mg/L Hard Hard 121 to 180 mg/L Very Hard more than 180 mg/L Source: usgs.gov
- 14. FLOW: Corrosion
- 15. pH
- 16. FLOW: Langelier Saturation Index LSI = pH - pHs Where: • pH is the measured water pH • pHs is the pH at saturation in calcite or calcium carbonate and is defined as: pHs = (9.3 + A + B) - (C + D) Where: • A = (Log10 [TDS] - 1) / 10 • B = -13.12 x Log10 (oC + 273) + 34.55 • C = Log10 [Ca2+ as CaCO3] - 0.4 • D = Log10 [alkalinity as CaCO3] Source: wqa.org
- 17. But what about my water? Target water properties Testing your water Correcting your water
- 18. FLOW: SCAA Water Specifications Characteristic Target Acceptable Range Odor Clean / Fresh, Odor-free Color Clear Color Total Chlorine 0 mg/L TDS 150 mg/L 75-250 mg/L 1-5 grains or 17 mg/L – 85 Calcium Hardness 4 grains or 68 mg/L mg/L Total Alkalinity 40 mg/L At or near 40 mg/L pH 7.0 6.5 to 7.5 Sodium 10 mg/L At or near 10 mg/L Source: scaa.com
- 19. FLOW: La Marzocco Water Specifications Characteristic Target Odor Clean / Fresh, Odor-free Color Clear Color Total Chlorine 0 mg/L TDS 150 mg/L Calcium Hardness 3-5 grains or 51.3-85.5 mg/L Total Alkalinity 90-120 mg/L pH 7-7.5 Chlorides <30 mg/L
- 20. FLOW: Methods of Conditioning • Mechanical Filtration • Sediment removal • Small particle removal • Dissolved solids removal • TDS removal • Adsorption • Activated Carbon • Taste and Odor removal • Ion Exchange • Softening • Hardness Reduction
- 21. FLOW: Tools for knowing your water: Good Tool Source: Hach.com
- 22. FLOW: Tools for knowing your water: Best Tool
- 23. Questions?