Question 1: The purpose of digestion is to reduce the amount of organic matter and the number of disease-causing ________ present in the solids.
Question 2: One major feature of anaerobic digestion is the production of ________ (with the most useful component being methane), which can be used in generators for electricity production and/or in boilers for heating purposes.
Question 3: Industrial sources of wastewater often require specialized treatment processes (see ________).
Question 4: Future plans call for increased use of treated sewer water as well as more ________.
Question 5: ________, fats, organic short-chain carbon molecules, etc.) and bind much of the less soluble fractions into floc.
Question 6: One of the key benefits of an MBR system is that it effectively overcomes the limitations associated with poor settling of sludge in conventional ________ (CAS) processes.
Question 7: In addition to causing deoxygenation, some algal species produce toxins that contaminate ________ supplies.
Question 8: Sewage treatment, or domestic wastewater treatment, is the process of removing ________ from wastewater and household sewage, both runoff ( effluents) and domestic.
Question 9: Wastewater may contain high levels of the nutrients ________ and phosphorus.