Environmental Engineering FOURTH EDITION

viii ENVIRONMENTAL ENGINEERING

Aerobic and Anaerobic Decomposition

Effect of Pollution on Streams

Effect of Pollution on Lakes

Effect of Pollution on Groundwater

Effect of Pollution on Oceans

Heavy Metals and Toxic Substances

Conclusion

Problems

5 Measurement of Water Quality

Sampling

Dissolved Oxygen

Biochemical Oxygen Demand

Chemical Oxygen Demand

Total Organic Carbon

Turbidity

Color, Taste, and Odor

Alkalinity

Solids

Nitrogen and Phosphorus

Pathogens

Heavy Metals

Other Organic Compounds

Conclusion

Problems

PH

6 Water Supply

The Hydrologic Cycle and Water Availability

Groundwater Supplies

Surface Water Supplies

Water Transmission

Conclusion

Problems

7 Water ktment

Coagulation and Flocculation

Settling

Filtration

Disinfection

Conclusion

Problems

58

60

70

73

75

76

76

77

81

81

82

84

91

91

92

92

92

94

94

97

99

102

103

104

104

107

107

108

115

119

132

134

135

135

140

141

150

151

151