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Household water treatment

Household water treatment. Water Quality Problems. Recommendations. New source Pollution control Maintenance + inspection Treatment Explore all of them before taking action!. Before You Buy Treatment Equipment. Have your water tested by a certified lab

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Household water treatment

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  1. Household water treatment

  2. Water Quality Problems Recommendations • New source • Pollution control • Maintenance + inspection • Treatment • Explore all of them before taking action!

  3. Before You Buy Treatment Equipment • Have your water tested by a certified lab • Don’t rely on in-home water test results • Consult unbiased water quality experts • Explore all alternatives • New source, pollution control, maintenance

  4. Water Treatment anion exchange disinfection oxidation pH adjustment cation exchange filtration adsorption demineralization Very complex topic – refer question to an expert

  5. shock chlorination May work for small numbers of coliform bacteria

  6. Page 56

  7. Point of Entry (POE) Whole House Treatment

  8. continuous chlorination

  9. U-V Sterilizer U-V Tube

  10. Control Valve Tank

  11. Softening Nitrate removal Metals & H2S Neutralizer Organicremoval

  12. Schematic of Softener Ion Exchange: Sodium for Calcium & Magnesium Raw Water Calcium & Magnesium RESIN (Sodium Or Potassium) Treated Water (Sodium or Potassium)

  13. Carbon Filtration • Uses • Remove man-made organic chemicals • Remove miscellaneous tastes from water • Remove radon gas from water • Maintenance • Carbon must be replaced routinely

  14. Water Limestone chips or calcite Gravel Acid (Corrosive Water) Control

  15. Iron Removal • Form and concentration is important • Oxidized = visible, orange stain • Reduced = colorless • Removal Methods • Water softener • Chlorination / filtration • Oxidizing filter

  16. Hydrogen Sulfide • Hot water only? • remove or replace rod in heater • Carbon filtration • Chlorination / filtration • Aeration • Oxidizing filter • manganese greensand

  17. Radon • Naturally occurring radioactive gas • Enters groundwater from surrounding rock • Gas released as water is used during showering or bathing • No drinking water standard • - Proposed standard for 300 pCi/L • Test indoor air first • Removed with carbon filter or aeration

  18. Point of Use (POU) At the Sink

  19. Reverse Osmosis • force water through membrane • removes many contaminants

  20. Reverse osmosis Page 61 Startup condition Reverse osmosis membrane Contaminated inlet water

  21. Reverse osmosis Page 61 Later time Reverse osmosis membrane Contaminated inlet water

  22. RO Unit Pre-filter Sediment Carbon

  23. Tips for Buying Treatment Equipment • Seek reputable companies that have been around • Ask for customer references • Research company history • Beware of hard sale techniques (scare tactics) • Ask about maintenance requirements • Get a detailed warranty • Look for NSF and WQA certifications • EPA certification means nothing • Get everything in writing! • If it sounds too good - it is!

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