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What You Need To Know About Wastewater Aeration and How It Works
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When wastewater is aerated enough, its organic matter reduces and a flocculant sludge (consisting of various microorganisms) is formed. A flocculant is defined as “a substance which promotes the clumping of particles, especially one used in treating waste water”
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In order to improve the process, the flocculant-activated sludge is retained in the system as an inoculum, a substance used for inoculation.
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Here is a more detailed phase-by-phase definition of this process for a better illustration:
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Phase 1: The macromolecules are hydrolyzed or broken down into their monomer compounds. Phase 2: The small molecules produced in Phase 1 are then partially degraded, releasing 1/3rd of their total energy to the cell.
Phase 3: The catabolic route oxidizes the compounds, thus producing carbon dioxide and energy. The anabolic route, which requires energy, involves the synthesis of new cellular material.
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Generally, the organisms in wastewater-activated sludge culture may be divided into four major classes.
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Floc-forming organisms: These help separate the microbial sludge from the treated wastewater. Saprophytes: These are microorganisms that degrade the organic matter. Predators: The main predators are protozoa, which thrive on bacteria. Nuisance organisms: They interfere with the smooth functioning of the wastewater-activated sludge system when they come in large quantities.
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The process of wastewater aeration exists to stabilize it, as wastewater contains numerous bacteria that can pose serious environmental and health hazards if haphazardly handled.
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