Do Now Objective Describe the process of wastewater treatment. Warm-up What is evaporation? What is condensation? What is precipitation?

Pollution Review What are two types of pollution described in the textbook? What is the difference between point source pollution and non-point source pollution? What are two examples of point source pollution? What are two example of non-point source pollution?

Wastewater Why is wastewater treatment an extremely important part of our modern society? What are some negative results of poor sanitation?

Statistics 2.5 billion people without regular access to proper sanitation 1.8 million deaths, most of them children, are associated with poor sanitation each year Southern Asia, Sub-Saharan Africa, and Oceania are most highly impacted

Percentage of people with sanitation What is the graph showing? Has sanitation improved since 1990? How do you know?

Gross stuff One gram of human feces can contain: 10 million viruses 1 million bacteria 1000 parasites

Textbook (pages 20-21) What is primary treatment? What is secondary treatment? Sketch and label a simple diagram showing wastewater treatment. Convert Figure 23 to a bar graph.

How do the wastewater treatment plants work? Animation Plant

Demonstrations Settling Filtration

Assignment 1. Describe what happens at the following locations: -Screen out (A) -Primary settling tanks (B) -Biological filters (C) -Secondary settling tanks (D) 2. Explain how wastewater treatment relies on physical properties in order to work properly.

DOL Why is wastewater treatment an important part of society? What are two negative effects of poor water quality? Fill in the boxes below describing some of the steps of wastewater treatment.