NPE maintains a large and diversified range of high-end pumping, power generation and associated equipment for hire or sale to suit any requirement. Committed to sourcing the world’s best equipment brands, NPE delivers the best-performing, safest and most reliable gear for your site.

NPE doesn’t just deliver a piece of equipment, we work with our clients to supply a solution. Dewatering for the construction of an apartment complex in Sydney. NPE provided wellpoint dewatering to 300 linear metres with an excavation depth of 5.4m below ground level with water treatment.

NPE installed one CDU, a dosing unit where flocculant, coagulant and pH adjustments were added to the treatment process. The unit also monitored the pH, turbidity and flow meter. Clarifiers were then added, where suspended and precipitated solids were removed for further filtration. The final step was the Metals Removal Module (MRM) for oxidation and filtration to remove elevated metal concentrations.

A higher concentration of heavy metals in the groundwater, especially aluminium, zinc and copper, made achieving the 95% marine water trigger value to discharge a challenge. It was overcome by choosing the most suitable chemical compositions to treat the water, followed by activation and cleaning of MRM media to ensure maximum media efficiency.