Lesson 1Primary treatment: role of primary clarifiers, alternative solids capture strategies, and when primary treatment can be omittedDis section dey explain di role of primary treatment for catching solids and reducing load, covering primary clarifier design, other high-rate catch options, effects on downstream units, and when to skip primary treatment.
Primary clarifier hydraulics and sizingSolids and BOD removal performance targetsHigh-rate primary and fine screening optionsEffect of primary treatment on BNR designCriteria for omitting primary treatmentLesson 2Secondary clarification and solids management: secondary clarifier designs, overflow rates, sludge return and wasting strategiesDis section dey cover secondary clarifier roles, design parameters, and operation plans. Topics include clarifier types, surface overflow and solids loading rates, sludge blanket control, RAS/WAS plans, and fixing solids loss problems.
Secondary clarifier types and componentsSurface overflow and solids loading ratesSludge blanket monitoring and controlRAS and WAS flow setting strategiesDiagnosing bulking and clarifier failuresLesson 3Sludge treatment conceptual options: thickening, aerobic/anaerobic stabilization, digestion, dewatering, and final disposal or reuse considerationsDis section dey outline sludge treatment trains, including thickening, aerobic and anaerobic stabilization, digestion, dewatering, and final disposal or reuse. E dey stress mass balance, energy recovery, and rule and smell limits.
Sludge production estimates and characterizationThickening technologies and design rangesAerobic and anaerobic stabilization choicesDigestion, biogas use, and energy recoveryDewatering, disposal, and reuse pathwaysLesson 4Compact and low-footprint configurations: MBBR, SBR, packaged systems, and hybrid solutions with selection guidanceDis section dey look at small biological setups like MBBR, SBR, packaged plants, and mixes, focusing on space, energy use, flexibility, building ease, and choice criteria for small or tight-space facilities.
Design principles of MBBR reactorsSBR cycle design and control strategiesPackaged plant components and limitationsHybrid MBBR–activated sludge applicationsConfiguration selection for constrained sitesLesson 5Secondary biological processes: comparative analysis of activated sludge (CAS), extended aeration, A2/O, MLE, MBBR, SBR, and trickling filters for compact, energy-efficient plantsDis section dey compare main secondary biological processes—CAS, extended aeration, A2/O, MLE, MBBR, SBR, and trickling filters—showing kinetics, energy use, space, nutrient removal power, and fit for small, efficient plants.
Conventional activated sludge design factorsExtended aeration for small robust plantsA2/O and MLE for biological nutrient removalMBBR and SBR for flexible compact systemsTrickling filters and combined biofilm systemsLesson 6Nutrient removal strategies: biological nitrogen removal (nitrification-denitrification) concepts, phosphorus removal options (chemical precipitation, enhanced biological phosphorus removal)Dis section dey show biological and chemical ways for nutrient removal, covering nitrification–denitrification paths, process setups, phosphorus precipitation, EBPR design basics, and key control parameters for steady work.
Nitrification and denitrification fundamentalsMain BNR process configurations and layoutsCarbon source needs and internal recycle controlChemical phosphorus precipitation design basicsEnhanced biological phosphorus removal conceptsLesson 7Pretreatment options and selection criteria: coarse/fine screening, grit removal, flow measurement and equalization rationaleDis section dey detail pretreatment goals and options, including coarse and fine screening, grit removal, flow measurement, and equalization. E dey explain sizing, layout, and how pretreatment protects downstream units and boosts reliability.
Coarse and fine screening design choicesGrit chamber types and sizing criteriaFlow measurement devices and sitingEqualization basin purposes and designPretreatment selection for varying influentLesson 8Disinfection options: chlorine, UV, peracetic acid—selection drivers, CT concept, residual control and safety considerationsDis section dey review disinfection goals and options, including chlorine, UV, and peracetic acid. E dey explain CT ideas, dose–response, residual control, safety, by-product worries, and choice based on effluent quality and rules.
Disinfection objectives and log removal targetsChlorination systems, CT, and residual controlUV reactor design and dose monitoringPeracetic acid mechanisms and applicationsSafety, by-products, and technology selection
