Investigation should include

the purpose of biotreatment systems
the function of various types of biotreatment systems (e.g., solid wastes, hazardous wastes, wastewater treatment, soil reclamation, treatment of airborne contaminants)
design considerations in the application of each biotreatment system type.

Process/Skill Questions:

What are the key characteristics of biotreatment systems?
How does the method of biotreatment affect the design of the system?
What biotechnology techniques are used in biotreatment systems?
How can biotreatment systems benefit the environment?
What is the current public perception of biotreatment systems?
How has the lack of biotreatment systems in underdeveloped countries affected the environment?