Pregunta | Respuesta |
Examples of solids in suspension of seawater? | Sand suspended in seawater. |
Examples of solids suspended in rivers/lakes? | Fish, yabbies, bacteria and dirt suspended in rivers/lakes. |
Examples of solutes dissolved in seawater/rivers/lakes? | Oxygen dissolved in seawater. |
Examples of solutes dissolved in pools? | Chlorine andd other treatment chemicals dissolved in pool water. |
Potable water sources in rural areas? | Treated groundwater/wastewater from factories outside of area. |
Reasons for desalination? | NSW is in drought, so state needs as much water as it can get. However, it is expensive and is rarely used right now. |
Steps of water treatment? | Flocculation - fine solid particles are removed, some from outside chemicals to clump them together. Filtration - pumped through filters to remove any remaining particles. Sterilisation - chlorine added to kill micro-organisms in water. Balancing pH - measure of acidity is changed so that water is not acid or alkaline. Fluoridation - fluorine added to reduce chance of tooth decay |
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