Pollution characteristics and risk controlDivalent manganese (Mn⁺) is commonly found in groundwater (concentrations often reach 0.1-2.0 mg/L)Exceeding 0.1 mg/L will cause black water in pipes (national standard limit 0.1 mg/L)L…
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Pollution characteristics and risk thresholdsGeological dissolution leads to sulfate enrichment in natural water bodies (concentrations often reach 100-500 mg/L)Causes gastrointestinal discomfort when exceeding 250 mg/L (nationa…
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Analysis of the mechanism of odor generationHydrogen sulfide pollution: sulfate reduction reaction in anaerobic environment (concentration>0.05mg/L produces rotten egg smell)Algae metabolites: eutrophic water releases geosmin…
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Core water quality indicatorsResistivity ≥18.2 MΩcm (25℃)TOC content ≤5μg/LParticle control>0.1μm (count <1/mL)Total bacteria <0.1 CFU/mLMulti-stage purification process architecture1. Pretreatment unitTwo-stage r…
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Pollution sources and risk levelsCopper precipitation mainly occurs in acidic water pipe networks with a pH of less than 6.5 (common in copper pipes)Concentrations exceeding 1.0 mg/L will cause acute gastrointestinal reactions (…
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Greywater characteristics and treatment targetsDefinition: Washing/showering/laundry wastewater (BOD<sub>5</sub>≤150mg/L, SS≤100mg/L)Prohibited scenarios: fecal/kitchen wastewater is strictly prohibited (Escherichi…
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