A feasibility study on water Infiltration control and wastewater management at Sinermapalo chrome marble quarry, Kittila Finland

Abstract

Efficient water infiltration control and wastewater management are not only critical for sustainable operations at quarries but also important to prevent environmental threats. Therefore, innovative and sustainable water management strategies are necessary to prevent flooding from surface runoff and groundwater generated in the quarry environment. This research focuses on a feasibility study assessing and mitigating water-related challenges at Sinermapalo Chrome marble quarry in Kittila, Finland.

The study began with an assessment of the quarry site where reconnaissance and sampling were conducted. Laboratory preparation of the slurry-based mud sample generated during diamond saw cutting as a form of wastewater was carried out using the crusher and rod mill for size reduction. A comprehensive analysis was conducted on the mud sample aimed at determining the physiochemical properties of the wastewater generated at the quarry, which includes the pH, electrical conductivity, and oxidation-reduction reaction. In addition, an X-Ray Fluorescence analysis was conducted on the dry sample of the mud to understand the mineral content and monitor any form of heavy metal contamination in comparison with quality requirements and limit values for concentration in industrial wastewater set by the Finnish Environmental Management Act. These findings, alongside other factors such as particle size and highest precipitation observations, informed the design of a sedimentation pond to facilitate the storage and settling of wastewater for efficient management. Additionally, to address water infiltration through the weathered and fractured portion of the pit face from a nearby lake, grouting was proposed as an effective sealing technique. Overall, the use of these approaches which consist of combining sedimentation and inflow control is expected to enhance operational efficiency, minimize environmental impacts, and ensure compliance with wastewater management standards. The study contributes to the broader understanding of water resource management in the mining industry and provides a practical framework for addressing similar challenges in quarry operations.