ポリビニルアルコールゴム綿の工業廃水は有害か？
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ポリビニルアルコールゴム綿の工業廃水は有害か？水源が汚染されたらどうすればいいの？
PVAは生物分解しにくいものの、ゆっくりと分解してCODを生成するため、有害です！
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