Wastewater and sludge generated during coal mining and mineral extraction typically contain high solid content with mineral particles and suspended matter, with some sludge exhibiting corrosive and adhesive properties. Operations often occur in open pit or constrained site environments, with variable process loads, placing high demands on dewatering equipment stability, wear resistance, and continuous operation capability. Treatment systems must operate efficiently in limited space while ensuring dewatered sludge is suitable for transport, storage, and subsequent safe disposal.
Coal Mine and Mining Site Sludge Dewatering
Industry Background
Technical Approach
The system follows a process of pre-thickening followed by mechanical dewatering. Mining wastewater and coal mine sludge are first reduced in volume in the thickening stage before undergoing solid-liquid separation in the dewatering unit. The equipment operates continuously with a compact layout, allowing rapid deployment at mining workshops or field sites. The dewatered sludge has low and uniform moisture content, facilitating transport or resource recovery, while minimizing on-site operational and maintenance effort, ensuring effective wastewater management at the mining site.
On-site Photos
The photos below show a Haibar dewatering unit supplied to a coal mine site in Hebei in 2023. The equipment was used to treat high-solid sludge generated from coal mining and tailings wastewater. It operated with stable performance and effective continuous operation, producing dewatered sludge with low and uniform moisture content, meeting transportation and downstream disposal requirements, providing reliable technical support for mining wastewater management.
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