The ultimate bearing capacity of water body self-purificationIt refers to the maximum threshold that natural water systems can absorb pollutants through physical, chemical, and biological processes while maintaining ecological b…
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The smallest chemical unit that retains the characteristics of an elementAn atom is composed of three basic particles:Nucleus: Contains protons (positively charged) and neutrons (electrically neutral)Electron: Negatively charged…
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The position identification of an element in the periodic table and the determining factor of its chemical propertiesAtomic number refers to the number of protons contained in the nucleus of an element atom, and this value has t…
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The phenomenon where material concentration or energy intensity decreases over timeIn environmental engineering and water treatment, attenuation refers to the natural process by which pollutant concentrations or energy forms are…
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The core indicator for measuring the oxidizing ability of chlorinated disinfectantsAvailable chlorine refers to the active chlorine content that chlorine-containing compounds (such as bleaching powder, hypochlorite, etc.) can st…
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