UNIT ONE 1
Text Historical Development of Mumcipal Water Systems in the United States 1
Reading Material A Groundwater and Surface-water Supplies 7
Reading Material B Water Transmission 9
UNIT TWO 11
Text Measurement of Water Quality 11
Reading Material A Biochemical Oxygen Demand 16
Reading Material B Bacteriological Measurements 18
UNIT THREE 21
Text Water Processing 21
Reading Material A Methods for Removal of Wastes and Odours 26
Reading Material B Magnetic Water Treatment 28
UNIT FOUR 31
Text Filtration 31
Reading Material A Rapid Gravity Filtration 36
Reading Material B Backwashing 38
UNIT FIVE 40
Text Collection of Wastewater 40
Reading Material A Storm Sewer System 45
Reading Material B Sanitary Sewer System 47
UNIT SIX 49
Text Composition of Wastewater 49
Reading Material A Primary Treatment 54
Reading Material B Secondary Treatment 56
UNIT SEVEN 58
Text Biological Treatment System 58
Reading Material A Biological Towers 63
Reading Material B Biological Aeration 64
UNIT EIGHT 66
Text Characteristics of the Sludges 66
Reading Material A Sludge Stabilization 71
Reading Material B Sludge Dewatering 73
Text Pumps and Pumping Stations 75
UNIT NINE 75
Reading Material A Choice of Pumps 80
Reading Material B Pump Station Buildings 82
UNIT TEN 84
Text Classification of Water Pollutants 84
Reading Material A Regulations Concerning: Water Pollution 89
Reading Material B Sources of Water Pollution 91
UNIT ELEVEN 93
Text Potential Impact of Air Contaminants on Water Quality 93
Reading Material A The Need for Water Quality Studies 98
Reading Material B Water Quality Standards 99
UNIT TWELVE 102
Text Hazardous Waste 102
Reading Material A Treatment of Hazardous Waste 107
Reading Material B Radioactive Waste Management 109
Text Air Pollution 111
UNIT THIRTEEN 111
Reading Material A Meteorological Effects and Changes 116
Reading Material B Causes of Air Pollution 118
UNIT FOURTEEN 120
Text Health Effects of Noise 120
Reading Material A Measurement and Control of Noise 125
Reading Material B Noise Control 127
Text Resource Recovery 130
UNIT FIFTEEN 130
Reading Material A Disposal of Solid Waste-Landfilling 135
Reading Material B Solid Wastes 137
UNIT SIXTEEN 140
Text Removal of Organic Vapour from Effluent Gases 140
Reading Material A Managing Climatic Change 145
Reading Material B Pollution Prevention or Cure 147
Appendix Ⅰ Vocabulary 149
Appendix Ⅱ Translation for Reference 156
Appendix Ⅲ Key to Exercises 178