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Water
Term | Definition |
---|---|
Hard Water | Water that will not easily form a lather with soap. Hardness in water is caused by the presence of Ca2+ or Mg2+ ions. |
Water Treatment | Screening - Flocculation - Sedimentation - Filtration - Chlorination - Fluoridation - pH adjustment |
Flocculant | A chemical added to water to coagulate suspended particles. |
Biochemical Oxygen Demand | The amount of dissolved oxygen consumed by biological action when a sample of water is kept at 20 degrees in the dark for 5 days. |
Eutrophication | The enrichment of water with nutrients, which leads to excessive growth of algae. |