Course Glossary
This shows the specialized terms used in EarthWise Academy. This section contains all the definitions used in the various course glossaries used by each course.
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AerobicA condition in which high levels of dissolved oxygen are made available.
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AdsorptionThe gathering of a gas, liquid, or dissolved substance at the surface at the surface of solid bodies with which they are in contact.
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Advanced TreatmentConsists of additional biological or chemical treatment processes (beyond secondary treatment) that are employed to remove constituents such as nitrogen and phosphorus, that are not reduced significantly as a result of secondary treatment. Any process of water renovation that upgrades treated wastewater to meet specific reuse requirements. May include general cleanup of water or removal of specific parts or wastes insufficiently removed by conventional treatment processes. Typical processes include chemical treatment and pressure filtration.
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AdsorbThe accumulation of one material on the surface of another material through physical bonds
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Additional Routine Monitoring
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Acute health effectsAdverse effect on human health as a result of short-term exposure. Acute health effects occur within hours or days of the time that a person consumes a contaminant.
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Activated Sludge ProcessA biological treatment process in which a mixture of wastewater and activated sludge is agitated and aerated. The activated sludge is subsequently separated from the treated wastewater by settlement and recycled or wasted. Although the configuration of activated sludge plants vary, the activated sludge process includes one or more aerated reactors that keep the solids in suspension; a liquid-solids separation device known as a clarifier; and a method of recycling the separated sludge from the clarifier back to the aerated reactor(s).
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Activated SilicaA coagulant aid that is created on-site by neutralizing sodium silicate.
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Action Level
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AcidityThe concentration of H+ ions in a solution, measured as pH.
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