MIC 201 Lecture Notes - Lecture 55: Nitrogen Fixation, Septic Tank, Cesspit
Document Summary
This chapter discusses water microbiology and elemental recycling in the environment. 26 opens with discussions on the microbial floras of unpolluted, polluted, and marine environments. It then outlines infectious diseases that water can transmit and continues with descriptions of water purification and sewage treatment. The laboratory bacteriologist is highlighted, and the chapter closes with descriptions of the roles of microorganisms in the carbon, sulfur, and nitrogen cycles. On completing the chapter, you should be able to answer the following questions: a. Compare ground and surface waters with reference to their origin and microbial content: write short essays on unpolluted, polluted, and marine environments, comparing the types of microorganisms found in each environment. Discuss the origin of physical, chemical, and biological pollution of waters. Explain the meaning of bod, and outline the test by which it is determined. List a number of bacterial, viral, and protozoal diseases that can be transmitted by contaminated waters.
