Page 21 - Water and wastewater engineering

xviii CONTENTS

4-3 Well Protection 4-3
4-4 Well Design 4-15
4-5 Chapter Review 4-41
4-6 Problems 4-42
4-7 Discussion Questions 4-51
4-8 References 4-51

5 Chemical Handling and Storage 5-1
5-1 Introduction 5-2
5-2 Redundancy and Capacity Provisions 5-2
5-3 Delivery, Handling, and Storage 5-2
5-4 Chemical Feed and Metering Systems 5-7
5-5 Chemical Compatibility 5-14
5-6 Materials Compatibility 5-14
5-7 Designing for Safety and Hazardous Conditions 5-17
5-8 Operation and Maintenance 5-17
5-9 Chapter Review 5-21
5-10 Problems 5-22
5-11 Discussion Questions 5-24
5-12 References 5-25

6 Coagulation and Flocculation 6-1
6-1 Introduction 6-2
6-2 Characteristics of Particles 6-3
6-3 Coagulation Theory 6-5
6-4 Coagulation Practice 6-22
6-5 Flocculation Theory 6-23
6-6 Mixing Theory 6-24
6-7 Mixing Practice 6-26
6-8 Operation and Maintenance 6-49
6-9 Chapter Review 6-49
6-10 Problems 6-50
6-11 Discussion Questions 6-57
6-12 References 6-58

7 Lime-Soda Softening 7-1
7-1 Hardness 7-2
7-2 Lime-Soda Softening 7-6
7-3 Softening Processes 7-11
7-4 Chemical Dosages Based on Stoichiometry 7-15
7-5 Concurrent Removal of Other Constituents 7-26
7-6 Process Configurations and Design Criteria 7-27
7-7 Operation and Maintenance 7-34
7-8 Stabilization 7-34
7-9 Chapter Review 7-39