Construction sites requiring subsurface excavation will often require dewatering. The purpose of dewatering at a construction site is to prevent groundwater from entering the excavation site, allowing excavation to occur.
The most common construction dewatering applications include:
- Emergency Response Excavation
- General Excavation for Civil Infrastructure
- Manufactured Gas Plant Excavation
- Mining Excavation
- Remediation Site Excavation
- Tunneling Excavation
Typically, dewatering is done proactively by depressing the groundwater table. Equipment used to depress the groundwater table include: submersible pumps, eductors or vacuum extraction systems (application of vacuum to a well point).
Extracted groundwater would typically contain high amounts of sediment. It is also common for the extracted groundwater to be contaminated with VOC’s such as Benzene, Xylenes, Toluene, Ethyl benzene, MTBE, Trichloroethylene, Trichloroethylene, Vinyl Chloride, or metals such as iron, manganese and lead. Equipment used to remove sediment, VOC’s and metals would include: settling tanks, bag filters, carbon filters, specialty media filters, oil water separators and air strippers. MLE Equipment can supply components loose to be assembled on site or turnkey equipment packages that can be enclosed in heated insulated buildings.
