tailieunhanh - Handbook of Water and Wastewater Treatment Plant Operations - Chapter 3

Tài liệu tham khảo nước và Xử lý nước thải, Mô hình, và thuật ngữ Cẩm nang này là một trình biên dịch hoặc tóm tắt các thông tin có sẵn trong nhiều nguồn chuyên gia. Trong khi chúng tôi đã cố gắng để trang trải tất cả các khía cạnh của nước và hệ thống xử lý nước thải hoạt động, chúng ta hãy chỉ ra rằng không có một cuốn sổ tay có tất cả các thông tin hoặc tất cả các câu trả lời. Hơn nữa, bởi vì các giới hạn vật lý của bất kỳ văn bản,. | 3 Water and Wastewater References Models and Terminology Living things depend on water but water does not depend on living things. It has a life of its own. . Pielou1 SETTING THE STAGE This handbook is a compilation or summary of information available in many expert sources. While we have attempted to cover all aspects of water and wastewater treatment system operation let us point out that no one single handbook has all the information or all the answers. Moreover because of the physical limits of any written text some topics are only given cursory exposure and limited coverage. For those individuals seeking a more in depth treatment of specific topics germane to water and wastewater treatment system operations we recommend consulting one or more of the references listed in Table and any of the many other outstanding references referred to throughout this text. TREATMENT PROCESS MODELS Figure shows a basic schematic of the water treatment process. Other unit processes used in treatment of water . fluoridation are not represented in Figure we discuss many of the other unit processes in detail within the handbook. Figure shows a basic schematic or model of a wastewater treatment process that provides primary and secondary treatment using the activated sludge process. In secondary treatment which provides biochemical oxygen demand removal beyond what is achievable by simple sedimentation three approaches are commonly used trickling filter activated sludge and oxidation ponds. We discuss these systems in detail later in the text. We also discuss biological nutrient removal and standard tertiary or advanced wastewater treatment. The purpose of the models shown in the figures and their subsequent renditions in later chapters is to allow readers to visually follow the water and wastewater treatment process step-by-step as we present it later in the written material. Figure and Figure help you understand how all the various unit .