Removal Characteristics of Water Treatment Systems Applied to Deconstruction Effluents

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  • 焼却施設解体時の除染排水に適用した水処理システムによる有害物質の除去特性
  • ショウキャク シセツ カイタイジ ノ ジョセン ハイスイ ニ テキヨウ シタ ミズショリ システム ニ ヨル ユウガイ ブッシツ ノ ジョキョ トクセイ

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Abstract

In this study, we applied a water treatment system comprising the coagulation precipitation, membrane filtration, and advanced oxidation processes to the wastewater discharged by the wet decontamination process of incineration plants. As a result, heavy metals and dioxins included in the discharged wastewater were removed to below the environmental standards. In this process, the floc formation process by the coagulation of submicron-sized particles is important as this process affects the decomposition of dioxins in the advanced oxidation process. The existence of large flocs formed from submicron-sized particles might remove the need for the advanced treatment process from the water treatment system. However, it is important to consider the various conditions related to all processes, such as the nature of the target raw water, the constraints of the site, the type of by-product waste, and the cost, to build the optimum water treatment system.

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