Postlaboratory Questions And Problems

1. According to your results of Part A, what differences do you observe among samples? Was this expected? Why?

2. In the sample B.2.1 (surface water), is the level of phosphate favorable for eutrophication? What other measurements should be carried out to have a firmer support for your answer?

3. From the other samples (B.2.2, B.2.3, B.2.4) what differences do you observe? Was this expected of such samples? Why?

4. With the sample corresponding to a wastewater treatment plant, are the levels above what is expected from a wastewater plant discharge?

5. What kind of chemical treatment would you propose for reducing the amount of phosphate coming out from a wastewater treatment plant? Write down the possible reactions.

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