2.2.1. Total Dissolved Solids (TDS)

Try these first

1. 1.

   What does TDS stand for?

   Hint

   It's about the particles dissolved in water.

2. 2.

   What is one example of organic matter that can affect TDS?

   Hint

   Think about what happens to plants and animals.

3. 3.

   What does TDS measure?

   • Total Direct Solids
   • Total Dissolved Solids
   • Total Dispersed Solids

   Hint

   Focus on what is actually dissolved in a liquid.

4. 4.

   True or false: High BOD indicates low levels of organic pollution in water.

   • True
   • False

   Hint

   Remember what BOD represents in terms of oxygen demand.

5. 5.

   Consider a community experiencing fish deaths in their nearby river. High TDS levels are recorded. Formulate a hypothesis on the relationship between TDS and fish health.

   Hint

   Think about how TDS can influence oxygen levels in water.

6. 6.

   In water treatment, COD is measured before and after treatment. If the initial COD is 200 mg/L and the final is 50 mg/L, analyze treatment efficiency.

   Hint

   Consider how to calculate percentage reduction.