Rainfall across an active site mobilises sediment, cement fines and hydrocarbons into stormwater that must meet discharge consent before leaving the works. Treatment must cope with intermittent, weather-driven flows.
Specialised water treatment for TBM slurry, groundwater and construction runoff on underground projects.
Dissolved air flotation for oil, grease and fine-solids removal from equipment washdown water.
Screw and belt presses producing stackable cake from excavated spoil and treatment sludge.
This guide explains site stormwater and sediment control — attenuation, coagulated lamella clarification and pH/oil correction — for weather-driven runoff from the construction compound. It matters because a single storm can breach a turbidity consent if the runoff path is not engineered. The system is sized for the design storm rather than the average day, with attenuation buffering peak flows so the treatment stages see a controlled, steady load. Online turbidity and pH monitoring at the outfall provide the evidence trail that demonstrates compliance to the regulator after every rainfall event.
Runoff arrives in short, high-intensity events, requiring attenuation storage so the plant sees a manageable, steady flow.
Excavation and concreting generate fine, slow-settling solids that blind simple basins and lift turbidity above consent.
Concrete-contact water is strongly alkaline, and plant operation introduces oils and fuels that must be intercepted before discharge.
Storage lagoons and baffled basins buffer storm peaks and remove the readily settleable fraction.
Coagulant-assisted inclined-plate clarification captures the fine, colloidal sediment that basins miss.
CO2 or acid dosing neutralises alkaline runoff while coalescing interceptors strip free oils ahead of discharge.
Skid or container-mounted clarifiers for rapid deployment and relocation as the works progress.
Safe, self-regulating pH correction of concrete-contact water using carbon dioxide.
Plate or media interceptors removing free and dispersed hydrocarbons to stormwater limits.
Reynolds & Bauhm designs and deploys treatment and recovery packages matched to your geology, programme and discharge consent.
Our expertise spans multiple industries with sector-specific water treatment solutions.