エンブリッジ・ガス配給パイプライン・プロジェクト

ケーススタディ

Challenge:

ジョージアン・ベイ・パイプライン・プロジェクトは、同地域で増大する天然ガス需要を満たすために必要なものだった。新しいパイプラインは全長20km、直径12インチ。パイプラインのルートには、道路、鉄道、河川を横断する箇所が30カ所含まれており、これらを完成させるには水平方向掘削(HDD)が必要だった。使用済みHDD用流体と切断くずは、オンタリオ州では規制廃棄物であり、輸送と処分に非常にコストがかかる。推定250,000ガロン(940,000リットル)の使用済みドリル泥の処分が必要となる。

Solution:

MetaFLO Technologies provided on site solidification of what became 300,000 gallons of mud. At an average 12 pounds per gallon, total waste was approximately 1,800 tonne. The solidified mud was piled in holding berms and turned twice a day to achieve greater volume reduction through evaporation.

Result:

We initially estimated a savings to Enbridge of 30% versus transportation to liquid disposal sites. Additional volume reduction got the solidified waste volume down to 1,386 tonnes for additional 23% cost savings. MetaFLO’s technology eliminates liquid waste bulking which would otherwise take up additional space in our increasingly scarce landfills.

Cabonne Shire WWT Lagoons

Key Stakeholders:

Owner: Vale Canada Ltd.
Contractor: Tervita Corp.
Distributor: Di-Corp

vale-tervita-di-corp

Challenge

Vale owns and operates a mining site in Northern Ontario, Canada. Through their mining and refining activities they produce a sludge waste by-product. The clients were in need of an efficient excavation and transportation solution to get this sludge to their off-site landfill.

Date

End of September 2018  -  Mid October 2018

Solution

During the bidding process, MetaFLO was engaged to provide an optimal blend and dosage rate to achieve the solids criteria required for excavation and transportation of the sludge. Using analytical data, MetaFLO estimated a dosage rate of 1.1% by weight (based on a high moisture content). Large mixing bins were recommended for increased surface contact and efficiency during the bucket mixing process. No sample was available at this time.

Result

Tervita Corporation utilized MetaFLO reagent to solidify approximately 4,000 m3 of sludge. Two 35m3 bins were staged on site and were loaded with a composite of “heavier” and “lighter” sludges. The originally estimated dosage rate was accurate as actual treatment averaged approximately 30lbs of MetaFLO MF006 reagent per m3 of sludge. All material was safely shipped to Vale’s off-site landfill. The job was completed on time.