Domanda del libro di testo
During chemical treatment of drinking water and wastewater, which of the following microbes is least likely to be inactivated or killed?
a. Algae
b. Viruses
c. Fungal spores
d. Bacteria
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Ch. 26 - Applied and Industrial Microbiology
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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TOC.tableOfContents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
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Capitolo 26, Problema 9
In which step is most of the organic content of sewage removed?
a. Primary treatment
b. Secondary treatment
c. Tertiary treatment
d. Sludge treatment
Guida verificata passo dopo passo1
Understand the sewage treatment process, which typically involves multiple stages: primary, secondary, tertiary, and sludge treatment.
Primary treatment mainly involves physical processes like sedimentation to remove large solids and settleable organic matter from sewage.
Secondary treatment focuses on biological processes where microorganisms break down and remove most of the dissolved and suspended organic matter.
Tertiary treatment is an advanced step aimed at removing remaining nutrients, pathogens, or specific contaminants, but it does not remove the bulk of organic content.
Sludge treatment deals with the processing and stabilization of the solid waste (sludge) generated during earlier treatment steps, rather than removing organic content from the liquid sewage.
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Primary Treatment
Primary treatment is the initial stage of sewage treatment where large solids and settleable organic matter are physically removed by screening and sedimentation. It mainly reduces suspended solids but does not significantly degrade dissolved organic material.
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Primary and Secondary Response of Adaptive Immunity
Secondary Treatment
Secondary treatment involves biological processes where microorganisms break down dissolved and suspended organic matter in sewage. This step removes most of the organic content by converting it into biomass, carbon dioxide, and water, making it the main phase for organic matter removal.
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Tertiary Treatment
Tertiary treatment is an advanced purification step that removes remaining nutrients, pathogens, and pollutants after secondary treatment. It focuses on polishing the effluent to meet environmental standards but does not primarily target organic content removal.
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