ハイドロ掘削泥 - パイプライン完全性試験

チャレンジ

パイプラインの完全性検査では、検査のためにパイプのセグメントを露出させる水圧掘削が必要になることが多い。その結果生じる水圧掘削泥水は、規制の対象となることが多く、廃棄が困難で、場合によっては汚染されることもあります。2015年、MetaFLOのライセンシーであるKBLは、アルバータ州にあるカナダの大手パイプラインオペレーターから、この廃棄物200 m3の固形化と処分を請け負いました。

ソリューション

KBL provided two shale bins placed in parallel at the job site. The hydro excavation trucks offloaded into one of these tanks. With the heavier solids settling at the bottom of the tank, the surface water was pumped to the second tank. The heavier mud was mixed with MetaFLO’s MF006 solidification reagent at a dose appropriate for the whole load. The surface water was then returned to the first tank to finish mixing.

結果

As seen in the photos below, as a result of the MF006 treatment, the hydro excavation material on the left was transformed to the dry, earth like finish in the right photo. This solution required no in-ground sumps, provided optimal efficiency for expensive hydro excavation trucks and low cost disposal options for solid material. Also, the 1% doseage required for solidification with MetaFLO’s reagent, results in a much smaller quantity than would be produced by sawdust or wood chip bulking methods. The client also reduces activities that generate a carbon footprint and mitigates safety  and environmental risks associated with shipping large quantities of liquid waste.