Lesson 1: Introduction to Wastewater Treatment - Wastewater TreatmentResponsibilities for Wastewater Disposal at Military Installations - Wastewater TreatmentPrevious Purification Processes - Wastewater TreatmentCharacteristics of Wastewater - Wastewater TreatmentBiological Characteristics. - Wastewater TreatmentQuality of Wastewater - Wastewater TreatmentSection II. Wastewater Treatment and Disposal - Wastewater TreatmentFigure 1-1. Complete wastewater system - Wastewater TreatmentInterceptors and Traps. - Wastewater TreatmentGasoline and oil interceptors. - Wastewater TreatmentFigure 1-3. P-trap for sanitary plumbing fixture. - Wastewater TreatmentPrinciples of Design. - Wastewater TreatmentFigure 1-5. Good and bad plans for sewer lines. - Wastewater TreatmentFigure 1-6. Manhole. - Wastewater TreatmentPumping. - Wastewater TreatmentWastewater Treatment - Wastewater Treatment - MD01610026Secondary Treatment. - Wastewater TreatmentTertiary Treatment. - Wastewater TreatmentCarbon absorption. - Wastewater TreatmentSummary - Wastewater TreatmentTertiary wastewater treatment-cont. - Wastewater TreatmentFigure 1-8. Flow-diagram-showing principles of secondary wastewater treatment - Wastewater TreatmentSection III. Septic Tank Practice - Wastewater TreatmentPercolation Tests. - Wastewater TreatmentSaturation and swelling of the soil. - Wastewater TreatmentSoil Absorption System - Wastewater TreatmentFigure 1-10. Absorption-field system for level ground. - Wastewater TreatmentFigure 1-11. A relief line arrangement for serial distribution. - Wastewater TreatmentAbsorption Area. - Wastewater TreatmentFigure 1-2. Absorption trench and lateral - Wastewater TreatmentInstitutional requirements. - Wastewater TreatmentSeptic Tanks - Wastewater TreatmentTable 1-5. Liquid capacity of tanks (gallons). - Wastewater TreatmentFigure 1-13. Septic tank capacities for wastewater flows up to 14,500 gallons per day. - Wastewater TreatmentFigure 1-14. Household septic tank. - Wastewater TreatmentFigure 1-15. Septic tank with 2 compartments. - Wastewater TreatmentStorage above liquid level. - Wastewater TreatmentDosing Tanks - Wastewater TreatmentAlternate Disposal Methods - Wastewater TreatmentFigure 1-17. Seepage pit. - Wastewater TreatmentSand Filter Trenches and Subsurface Sand Filters. - Wastewater TreatmentFigure 1-18. Underdrained sand filter trench. - Wastewater TreatmentFigure 1-19. Subsurface sand filter. - Wastewater TreatmentExercises, Lesson 1 - Wastewater TreatmentExercises, Lesson 1-cont. - Wastewater Treatment - MD01610055Exercises, Lesson 1-cont. - Wastewater Treatment - MD01610056Exercises, Lesson 1-cont. - Wastewater Treatment - MD01610057Exercises, Lesson 1-cont. - Wastewater Treatment - MD01610058Exercises, Lesson 1-cont. - Wastewater Treatment - MD01610059Solutions to Exercises, Lesson 1 - Wastewater TreatmentSolutions to Exercises, Lesson 1-cont. - Wastewater TreatmentLesson Assignment - Wastewater Treatment - MD01610062Lesson 2: Wastewater Treatment Plant Operation - Wastewater TreatmentScreen cleaning. - Wastewater TreatmentGrit Removal - Wastewater TreatmentFigure 2-3. Sectional drawing of comminutor. - Wastewater TreatmentPreaeration Tanks. - Wastewater TreatmentSafety Precautions. - Wastewater TreatmentFlow Measurement - Wastewater TreatmentPrimary Clarification of Sedimentation - Wastewater TreatmentDetention Time and Period. - Wastewater TreatmentRectangular tanks - Wastewater TreatmentSkimming devices. - Wastewater TreatmentFigure 2-8. Rectangular primary settling tanks with powered skimming equipment. - Wastewater TreatmentFigure 2-9. Rectangular settling tanks and mechanisms. - Wastewater TreatmentFigure 2-11. Imhoff tank - Wastewater TreatmentSludge Removal - Wastewater TreatmentSection II. Secondary Wastewater Treatment - Wastewater TreatmentBiochemical and Chemical Processes/Oxidation - Wastewater TreatmentTrickling Filter Unit. - Wastewater TreatmentFigure 2-13. Trickling filter, schematic drawing. - Wastewater TreatmentFigure 2-14. Trickling filter under construction. - Wastewater TreatmentFigure 2-15. Trickling filter with rotary distributor. - Wastewater TreatmentFigure 2-16. Wastewater flow diagram at plants using high-capacity filters. - Wastewater TreatmentMaintenance operations and control of health hazards. - Wastewater TreatmentFiltration Unit. - Wastewater TreatmentFiltration process. - Wastewater TreatmentActivated Sludge Unit. - Wastewater TreatmentFigure 2-18. Flow diagram of an activated sludge plant. - Wastewater TreatmentFigure 2-19. Aeration tank with diffuser tubes. - Wastewater TreatmentFigure 2-20. Contact aerator. - Wastewater TreatmentFigure 2-21. Mechanical aeration tank. - Wastewater TreatmentFigure 2-23. Two-stage aeration. - Wastewater TreatmentSecondary Sedimentation - Wastewater TreatmentSection III. Tertiary Wastewater Treatment - Wastewater TreatmentCoagulation-Sedimentation - Wastewater TreatmentMembrane Processes - Wastewater TreatmentSection IV. Sludge - Wastewater TreatmentFigure 2-26. Digester with floating cover. - Wastewater TreatmentPrinciples of Operation. - Wastewater TreatmentPostchlorination. - Wastewater TreatmentSludge Disposal - Wastewater TreatmentSludge Removal and Use. - Wastewater TreatmentSection V. Final Effluent and Stabilization Ponds - Wastewater TreatmentConstruction. - Wastewater TreatmentFigure 2-28. Oxidation ponds. - Wastewater TreatmentSection VI. Package Wastewater Treatment Plants - Wastewater TreatmentEffluent and Sludge - Wastewater TreatmentSection VII. Operational Tests and Sampling - Wastewater TreatmentBiochemical Oxygen Demand (BOD). - Wastewater TreatmentDissolved Oxygen. - Wastewater TreatmentRepresentative Sampling. - Wastewater TreatmentFigure 2-30. Sampler for sludge and wastewater effluent. - Wastewater TreatmentFigure 2-31. Apparatus for collecting dissolved-oxygen samples - Wastewater TreatmentTable 2-2. Sampling mg and analysis schedule. - Wastewater TreatmentExercises, Lesson 2 - Wastewater TreatmentExercises, Lesson 2-cont. - Wastewater Treatment - MD01610117Exercises, Lesson 2-cont. - Wastewater Treatment - MD01610118Exercises, Lesson 2-cont. - Wastewater Treatment - MD01610119Exercises, Lesson 2-cont. - Wastewater Treatment - MD01610120Exercises, Lesson 2-cont. - Wastewater Treatment - MD01610121Exercises, Lesson 2-cont. - Wastewater Treatment - MD01610122Exercises, Lesson 2-cont. - Wastewater Treatment - MD01610123Exercises, Lesson 2-cont. - Wastewater Treatment - MD01610124Solutions to Exercises, Lesson 2 - Wastewater TreatmentSolutions to Exercises, Lesson 2-cont. - Wastewater Treatment - MD01610126Solutions to Exercises, Lesson 2-cont. - Wastewater Treatment - MD01610127Lesson Assignment - Wastewater Treatment - MD01610128Lesson 3: Field Waste Disposal Methods - Wastewater TreatmentLatrine Facilities - Wastewater TreatmentLatrines Used in Normal Water Table Areas - Wastewater TreatmentFigure 3-1. Cat hole. - Wastewater TreatmentFigure 3-3. Deep pit latrine. - Wastewater TreatmentBored-hole Latrines. - Wastewater TreatmentLatrines Used in High Water Table Areas - Wastewater TreatmentBurn-Out Latrine. - Wastewater TreatmentFigure 3-6. Burn-out latrine. - Wastewater TreatmentPail or Bucket Latrine. - Wastewater TreatmentFigure 3-7. Pail latrine. - Wastewater TreatmentUrinal Facilities Used in Normal Water Table Areas - Wastewater TreatmentTrough Urinals. - Wastewater TreatmentFigure 3-9. Trough urinals. - Wastewater TreatmentSection II. Kitchen and Other Liquid Waste Disposal - Wastewater TreatmentSoakage Pits. - Wastewater TreatmentGrease Traps. - Wastewater TreatmentFilter grease trap (barrel). - Wastewater TreatmentEvaporation Beds. - Wastewater TreatmentOther Wastewater Facilites - Wastewater TreatmentMethods of disposal. - Wastewater TreatmentFigure 3-15. Inclined-plane incinerator with vapor burner. - Wastewater TreatmentExercises, Lesson 3 - Wastewater TreatmentExercises, Lesson 3-cont. - Wastewater Treatment - MD01610152Exercises, Lesson 3-cont. - Wastewater Treatment - MD01610153Solutions to Exercises, Lesson 3 - Wastewater TreatmentWastewater Treatment