CE 326 - INSTRUCTIONAL OBJECTIVES Introduction, pages 1-41 Water Supply - Coagulation and Flocculation— pages 171-178, 199 - 211: 1. Be able to list six areas for which environmental engineers are responsible. 1. Be able to differentiate between coagulation and flocculation. 2. Be able to explain what is meant by environmental ethics. 2. Be able to write the chemical reaction equations for either alum or ferric chloride in water containing bicarbonate alkalinity and calculate the amount of alkalinity needed to neutralize a given dosage of coagulant. 3. Be able to set up a material balance for an environmental subsystem. Water Supply - Water Chemistry—pages 132 -150: 3. Be able to explain “jar test” and how it is used in water treatment control. 1. Be able to define the terms "potable" and "palatable" and explain why drinking water must be both potable and palatable. 4. Be able to explain the significance of the velocity gradient (G) and the detention time (t) during the coagulation and flocculation steps in water treatment. 2. Be able to calculate the gram equivalent weight of chemical species. 3. Be able to calculate the molarity, normality, and concentration of chemical species in mg/L and percent by weight and convert from one unit of measure to the others. Water Supply - Sedimentation—pages 211-228: 4. Be able to convert a concentration of chemical species from mg/L as the species to mg/L as calcium carbonate and vice versa. 2. Be able to identify the four "zones" in a settling tank and explain the function of each. 1. Be able to explain the difference between Type I, Type II, and Type III sedimentation. 3. Be able to explain how a settling tank works (both horizontal and upflow clarifiers) and estimate the size of a settling tank 5. Be able to calculate the equilibrium concentration of a chemical species when it is in equilibrium with its precipitate—solubility product calculation. 4. Given appropriate data, be able to calculate the settling velocity in the case of Type I sedimentation for a given particle size or the particle size for a given settling velocity. 6. Be able to calculate the pH of a solution containing a strong or weak acid alone neglecting the dissociation of water—ionization constant calculation. Water Supply - Filtration—pages 211-240: 7. Be able to define the alkalinity for the carbonate system in terms of the chemical species found in equilibrium with water. 1. Be able to briefly describe how slow sand and rapid sand filters differ in terms of their operating procedures and loading rates. 8. Given appropriate data for a water sample, be able to calculate: total alkalinity, bicarbonate alkalinity, carbonate alkalinity, hydroxide alkalinity, total hardness, carbonate hardness, and non-carbonate hardness. (pages 178 – 182). 2. Be able to sketch a rapid sand filter - identifying the following: inlet, outlet, washwater outlet, underdrains, filter media, washwater troughs. 3. Given appropriate data, be able to estimate the size of a rapid sand filter needed, calculate the clean bed head loss and the expanded filter bed depth during backwash. Water Supply - Quality Standards and Treatment Systems—pages 154-170: 1. Be able to list the quality of water under the following categories: physical, chemical, biological and radiological. Water Supply - Disinfection—pages 240-248: 1. Be able to explain the "CT concept" as it relates to the SWTR criteria for cyst and virus disinfection. 2. Be able to explain the significance of the following inorganic substances in terms of their effects on water quality: chloride, copper, fluoride, iron and manganese, lead, nitrate, sodium, sulfate, and zinc. 2. Be able to explain the difference between free chlorine and combined residual chlorine. 3. Be able to define the following terms and explain their significance in terms of water quality and standards: pathogen, coliform, SDWA, MCL, VOC, SOC, DBP, THM, and SWTR. 3. Be able to write the equations for the dissolution of chlorine gas in water and the subsequent dissociation hypochlorous acid. 4. Be able to list general characteristics of ground and surface water. 4. Be able to write the equations for the chlorine/ammonia reactions to form the various chloramines. 4. Be able to sketch process flow diagram for a water filtration plant, label and explain their functions. 5. Be able to sketch breakpoint chlorination curve, label axes, breakpoint, and regions of pre- Aug. 26, 2002 1 Dr. S.K. Ong dominantly free chlorine and combined residual chlorine. values for a medium strength waste. 6. Be able to explain why a disinfectant that provides a "residual" might be preferred in water treatment to one that does not. Wastewater - Biological processes—pages 361-406: 1. Be able to sketch daily flow fluctuation (diurnal flow) to a typical domestic wastewater treatment plant. 7. Be able to list three disinfecting agents that are viable alternatives to free chlorine and combined residual chlorine and give advantages and disadvantages for each. 2. Be able to draw a flow diagram of a typical wastewater treatment plant giving examples of preliminary, primary, and secondary treatment. Wastewater - BOD—pages 283-330: 3. Be able to define SRT, MLSS, MLVSS, SVI, F/M, and sludge wastage for an activated sludge (AS) plant. 1. Be able to list the eight types of pollutants from the four principal sources of wastewater and describe why each is a concern. 4. Given appropriate data, be able to size primary and secondary clarifiers. 2. Be able to explain the difference between a point source and a non-point source. 3. Be able to define the assimilative capacity of a receiving water. 5. Given appropriate data, be able to size an AS aeration basin and give the recycle rate required to maintain a certain MLSS concentration. 4. Be able to define BOD and describe the laboratory procedure for determining BOD. 6. Be able to list the operational problems that might be encountered at an AS plant. 5. Given appropriate laboratory data, be able to calculate BOD5 and BODu. 7. Be able to describe one possible remedial measure for "bulking" at an AS plant. 6. Be able to explain the effect of nitrification during the BOD test. 8. Be able to draw a flow diagram for processes used in removing each of the following nutrients and describe each process: phosphorus, nitrogen. (pages 413 – 415) 7. Be able to sketch and label a DO sag curve. 8. Be able to write the mass balance diagram and equation for wastewater discharge into a receiving stream. Wastewater - Sludge treatment and disposal— pages 418 - 444: 1. Be able to list the basic processes for sludge treatment. 9. Given appropriate data, be able to calculate the oxygen deficit (D) in a reach of a stream and the critical oxygen deficit (Dc), at the minimum DO sag point. 2. Given appropriate data, be able to develop a solids mass balance for a given flow scheme. 10. Be able to list three deleterious effects of ammonia release to a receiving water. 3. Be able to describe the two types of thickeners (flotation and gravity). 11. Be able to explain the concept of a limiting nutrient and define eutrophication. 4. Given appropriate data, be able to size a gravity thickener using a batch flux currve. Wastewater – Microbial basics—pages 338 -354: 5. Be able to explain why sludge conditioning is important. 1. Be able to define heterotrophs and autotrophs and give examples of the type of treatment processes where they are found. 6. Be able to list three types of sludge dewatering processes. 2. Be able to give the temperature ranges for psychrophilic, mesophilic, and thermophilic organisms. Air Pollution - Fundamentals, standards, effects and fate of pollutants—pages 459-491: 1. Given appropriate data, be able to convert parts per million by volume (ppmv) to micrograms per cubic meter (~g/m3) for an air pollutant and vice versa. 3. Be able to list the terminal electron acceptor, end products, and applications for each type of biological treatment: aerobic, anoxic, and anaerobic. 2. Given appropriate data be able to apply the material balance approach in estimating the amount of pollutant that will be released into the atmosphere from a source material such as sulfur dioxide from the burning of coal. 4. Be able to list the growth requirements of microorganisms. 5. Be able to define the parameters in the Monod equation and plot the µ versus S relationship. 3. Be able to explain the influence of environmental factors on the severity of air pollution effects on materials. 6. Be able to give typical suspended solids and BOD Aug. 26, 2002 2 Dr. S.K. Ong 4. Be able to discuss the natural and anthropogenic origin of the seven major pollutants for which the U.S. Environmental Protection Agency has designated air quality standards and identify the likely mechanism for their removal from the atmosphere. 7. Be able to explain what a transfer station is and what purpose it serves. 8. Be able to list the site selection criteria for a solid waste landfill. 9. Be able to describe the trench and the area methods for landfill construction. 5. Be able to explain what is meant by "acid rain" and what contributes to its occurrence. 6. Be able to explain what is meant by "the hole in the ozone layer and what contributes to its occurrence. 10. Be able to define and describe the following terms: daily cover, leachate, cell, lift, cap, leachate collection system, gas collection system, and liner. 7. Be able to explain what is meant by "the greenhouse effect" and what contributes to its occurrence. 11. Be able to draw a diagram of a typical landfill construction. 12. Be able to discuss what is involved in landfill closure. 8. Be able to explain why it is difficult to define a causal relationship between air pollution and health related effects. 13. Be able to calculate how long it would take leachate to migrate through a clay liner. Air Pollution - Dispersion of pollutants—pages 491509: Hazardous Waste Management—pages 702-707, 726 - 783: 1. Be able to identify the prevailing conditions relating to atmospheric stability based on the smoke trail from a tall stack for the six classical types of plume behavior. 1. Be able to list the five categories for classifying hazardous wastes. 2. Be able to list the four specific hazardous waste characteristics. 2. Be able to explain how terrain influence air pollution problems in an affected area. 3. Be able to sketch the general structure of dioxin and explain why dioxins are hazardous. 3. Given appropriate data, be able to apply the Gaussian dispersion model in estimating the ground level concentration of air pollutants released from a station elevated source or the emission rate for a given ground level concentration. 4. Be able to sketch the general structure of PCB and explain why PCBs are hazardous. 5. Be able to define the cradle to grave concept. 4. Be able to explain how a health risk assessment can be used to evaluate a potential air pollution hazard. 6. Be able to define RCRA, HSWA, CERCLA, and SARA and explain how they differ. Air Pollution - Control Devices—pages 511 - 535: 7. Be able to define TSD and explain what classifies a site as a TSD facility. 1. Be able to describe briefly the basis for operation for each of the following air pollution control devices: a. b. c. d. e. 8. Be able to list six disposal technologies for hazardous wastes. absorption tower baghouse cyclone separator adsorption bed electrostatic precipitator 9. Be able to describe incineration and the applicable standards, define the terms "four nines" and DRE. Estimate DRE. 10. Be able to define the phases of a trial burn plan in the permitting of a hazardous waste incinerator under RCRA. 11. Be able to explain RCRA Part A and Part B permit applications for a TSD facility. Solid Waste Management - pages 630-639, 658-685: 1. Be able to characterize the amount of solid wastes produced in the U.S. on a mass and volume basis. 2. Be able to define and differentiate the terms garbage, rubbish, refuse, and trash. 3. Be able to list the major components of solid wastes and relative percentages. 4. Be able to list and describe the four means of solid waste management. 5. Given appropriate data, be able to determine the dry weight of solid waste components. 6. Given appropriate data, be able to determine the energy content of solid waste components. Aug. 26, 2002 3 Dr. S.K. Ong