3B2 E2.5 C14 Review

What is the maximum allowable concentration of Benzene in water?

What is the pH range for wastewater before it can be discharged into receiving water?

What is the primary factor affecting oxygen levels in water?

What is the purpose of retention ponds in wastewater treatment?

What is the acronym for the Canadian Council of Ministers of the Environment?

What is the primary concern with high-temperature wastewater?

What is the purpose of cooling towers in wastewater treatment?

What regulates waste water quality in federal government operations in Canada?

What is the effect of pH levels close to zero on aquatic life?

What is the purpose of long serpentine channels in wastewater treatment?

What is the primary purpose of wastewater treatment?

What is one of the factors that affect the quality of water?

What type of waste liquid is generated from industrial plants?

What is the term used to describe the adverse effects of certain chemicals on human life?

What is the final step in the wastewater treatment process?

What type of water is generated from agricultural activities?

What is the primary reason for maintaining a specific pH range in wastewater?

Why are retention ponds used in wastewater treatment?

What is the effect of high-temperature wastewater on receiving water?

What is the role of the Canadian Council of Ministers of the Environment (CCME)?

What is the primary factor affecting the ability of water to retain dissolved oxygen?

What is the purpose of the Canadian Environmental Protection Act?

What is the effect of high biochemical oxygen demand on aquatic life?

Why are cooling towers used in wastewater treatment?

What is the maximum allowable concentration of Cadmium in water?

What is the purpose of the Canadian Water Quality Guidelines?

What determines the maximum allowable concentration of chemicals in wastewater?

Which of the following waste liquids is most likely to contain high levels of pesticides?

What is the primary concern with high levels of acidity in wastewater?

Which parameter is most critical in determining the quality of wastewater?

What is the primary goal of controlling wastewater parameters?

What is the significance of oxygen demand levels in wastewater?

What is the primary purpose of the stabilization lagoon in the wastewater treatment process?

What is the function of the air diffusers in the first stage aeration tank?

What is the purpose of the clarifiers in the wastewater treatment process?

What happens to the sludge in the clarifier?

What is the final step in the wastewater treatment process?

How long does the wastewater typically remain in the first stage aeration tank?

What is the primary purpose of the oil/water separation pond in the industrial wastewater treatment plant?

What happens to the wastewater in the collection system if the plant is not built on a slope?

What is the purpose of the flare pit in the industrial wastewater treatment plant?

How long should the wastewater typically remain in the oil/water separation pond?

What is drawn off halfway between the surface and the bottom of the oil/water separation pond?

What is the purpose of the burner system in the flare pit?

What is the function of the compressed air bubbled into the bottom of the stabilization lagoon?

What happens in the first stage aeration tank of the wastewater treatment process?

What is the purpose of sending a portion of the activated sludge from the clarifier back to the first stage aeration tank?

What best describes the wastewater treatment process taking place in the second stage aeration tank?

Why is clear water from the top of the clarifier sent to the polishing pond?

What is the final adjustment that occurs in the polishing pond in the wastewater treatment process?

What is the purpose of a grit chamber in wastewater treatment?

How is grit typically removed from a grit chamber?

What type of system may be used to handle a substantial amount of grit build-up in a wastewater treatment plant?

What is the purpose of a bar screen in wastewater treatment?

In the context of wastewater treatment, what does a barminutor do?

When is the grit chamber in a wastewater treatment plant usually cleaned with a vacuum truck?

What is the purpose of a rotating trash screen in a wastewater treatment system?

Why is material high in organics on a screen less acceptable as landfill material?

What is the function of a flotation tank in a wastewater treatment system?

In municipal wastewater systems, where is the removal of inorganic material typically carried out?

What happens when air and water are combined under pressure and then depressurized in a flotation tank?

What is the primary purpose of a slow-moving skimmer in a flotation tank of a wastewater treatment system?

What is the primary function of a grit chamber in wastewater treatment?

What is the method used to clean a grit chamber when the volume of grit is small enough that a conveyor system is not needed?

What is the purpose of a bar screen in wastewater treatment for material high in bulky or fibrous content?

How is a bar screen cleaned when the quantity of trapped material is low?

What is the action taken if a substantial amount of grit builds up in a wastewater treatment plant?

Why is the removal of grit important in wastewater treatment processes?

What happens to the air when air and water are combined under pressure and then depressurized?

Why is material high in organics on a screen less acceptable as landfill material?

What is the purpose of the clear effluent from the flotation tank?

What is the purpose of the jet of water in the rotating trash screen?

What happens to the suspended materials in the flotation tank?

What is the purpose of adding chemicals to enhance gravity separation?

What is the size range of colloidal particles?

Why are colloidal materials difficult to filter?

What is the process that neutralizes charges on colloidal particles?

What is formed when colloidal particles attract each other after coagulation?

What is added to water to assist in the flocculation process?

Which phenomenon follows coagulation in the wastewater treatment process?

What is the purpose of adding flocculants in the water treatment process?

What is the main purpose of the clarifier in the wastewater treatment process?

What is the function of air bubbled into one leg of the 'U' tube syphon in the clarifier?

What happens to the sludge at the bottom of the conical clarifier?

What is the purpose of the central collection trough in the clarifier?

What is the final product of the clarification process?

What is the primary function of a clarifier in the wastewater treatment process?

Which part of the clarifier vessel is responsible for returning scum or activated sludge from the top of the inlet section back to the aeration tanks?

In the wastewater treatment process, what is a common purpose of flash mixers before clarifiers?

What is the primary role of the

What happens to the clear liquid in the clarifier after it rises to the top of the cone?

In the context of the wastewater treatment process, what is the main purpose of the flash mixing section?

Why is a high concentration of colloidal materials in water considered unacceptable?

Why do colloidal particles need to be removed from water?

How does the process of coagulation help in wastewater treatment?

What is the role of flocculation in wastewater treatment?

What is the purpose of adding inorganic salts or organic polymers to water in the coagulation process?

Why are colloidal particles difficult to remove without coagulation and flocculation processes?

What is the primary purpose of the air injected into the tank in the activated sludge process?

In the activated sludge process, what happens to the biological mass settled at the bottom of the clarifier?

What is the main function of the rotating biological contactor (RBC) in wastewater treatment?

How does the rotating biological contactor (RBC) work to reduce BOD?

What is the role of the cones on the surfaces of the plastic sheets in a rotating biological contactor (RBC)?

Why is it necessary for the sheets in the rotating biological contactor (RBC) to be spaced apart?

What is the primary function of the biological film in a Rotating Biological Contactor (RBC)?

Why is sludge formed in a Rotating Biological Contactor (RBC) and what happens to it?

Why does an Anaerobic Digester need to be heated?

What is the consequence of the anaerobic organisms developing in a Trickling Filter due to thickening of the biological film?

Why does the digested sludge in an Anaerobic Digester become less odorous?

What is the primary role of the open drain system in a Trickling Filter?

Why is flow balancing and management recommended for systems targeting low ammonia nitrogen values?

What is the role of the permeable media bed in a Trickling Filter with regard to the wastewater treatment process?

What is the significance of the thin biological film formed on the media bed in a Trickling Filter?

Why is recirculation of liquid back to the trickling filter important in the operation of a Trickling Filter?

What is the primary function of air injected into the tank in the activated sludge process?

What is the purpose of the rotating biological contactor (RBC) in wastewater treatment?

What happens to the biological mass in the secondary clarifiers?

What is the function of the discs in the rotating biological contactor (RBC)?

Why is it necessary to provide oxygen for the bacteria in the activated sludge process?

What is the purpose of the clarifier in the activated sludge process?

What is the main difference between the arrangement of discs in a Rotating Biological Contactor (RBC) and a Trickling Filter?

Why are ventilation ports located at the bottom of a Trickling Filter?

What is the primary function of the anaerobic digesters in the wastewater treatment process?

How do microorganisms in the biological film of a Trickling Filter contribute to the treatment process?

Why does the sludge in the anaerobic digesters become less odorous during the treatment process?

What is the main outcome of sloughing in a Trickling Filter?

What is the significance of creating a biological film on the Trickling Filter media?

How does the growth of microorganisms on the media surface of a Trickling Filter impact the treatment process?

How does the presence of anaerobic organisms on the media surface of a Trickling Filter affect treatment efficiency?

What is the purpose of recirculating some of the liquid back to the Trickling Filter from the settling tank?

Why is it important to take inlet samples in a wastewater treatment plant?

What is the role of topographical features around a wastewater treatment plant?

How does the introduction of new microorganisms contribute to wastewater treatment?

What could be a consequence of a sudden decrease in nutrient supply in the water of a wastewater treatment plant?

Why are steady-state conditions important in the operation of a wastewater treatment plant?

What is the role of nutrients in domestic wastewater for plant growth?

What do nitrifying bacteria in the aerobic zone convert ammonia (NH3) to?

What is the primary purpose of the Anoxic zone in the BPNR process?

What is the primary role of settleability testing in the wastewater treatment process?

What is the biochemical oxygen demand (BOD) test used for in wastewater treatment?

Why might an increase in chemical oxygen demand (COD) indicate an issue in the treatment process?

Which action is necessary if the wastewater becomes too alkaline during treatment?

What is the main function of the anaerobic zone in the BPNR process?

How is the oxygen demand of aerobic microorganisms calculated in the wastewater treatment process?

What happens if the pH of the wastewater flow drops too low during the treatment process?

Why should the pH level be monitored and adjusted as needed throughout the wastewater treatment process?

What can be inferred about the wastewater treatment plant if the 'bugs' are happy?

Why is it important to take inlet samples at a wastewater treatment plant?

What is the primary reason for the presence of stormwater or snow melt in a wastewater flow near a treatment plant?

In the context of the text, why are inlet samples important at a wastewater treatment plant?

What happens if the quantity of the material in the wastewater is not properly matched to the right quantity and type of microorganisms?

Why are sample points also important at the inlet of a wastewater treatment plant?

What happens to excess phosphorus carried off by bacteria in the BPNR process?

Which zone in the BPNR process converts nitrate to nitrogen gas?

What is the purpose of the BOD test in wastewater treatment?

Why is the oxygen demand of wastewater samples tested using the BOD test?

What happens if pH levels in the treatment process drop too low?

Which parameter is caused by the oxygen demand of aerobic microorganisms in the BPNR process?

What is the role of varying pH levels in different stages of treatment?

What is the purpose of the nitrification process in the BPNR system?

How is the oxygen demand of microorganisms in wastewater determined?

What is the process by which BPNR converts ammonia to nitrite and then nitrate in the wastewater?