Concrete remains the most common building material. Other than the solid concrete waste generated from your project, a concrete slurry is also produced. While you can crush solid concrete and reuse it for pavements and foundations, the concrete slurry is not as easy to recycle.
Thankfully, there are now construction waste disposal companies which can manage the concrete slurry from your site. The slurry undergoes different processes to guarantee its safety to the environment and human health. This is because concrete has a high PH which is harmful to humans and can erode pipes.
Here are the processes that concrete slurry undergoes in waste management.
This step involves the separation of water and concrete solids. Using a separator, the waste management company will utilize slurry flocculation which settles the solids at the container’s bottom with clean water on the top. There are different equipment used for slurry flocculation, but they all follow the same principle.
This stage involves the addition of a solidifier which acts as an absorbent and consolidates the remaining floating concrete in your slurry. This process results in clear water.
The use of an absorbent is also an EPA regulation to guarantee the resultant liquid is acceptable for release into a landfill. The solids left can be vacuumed or swept based on their quantity.
Since the slurry has a high pH, makes it hazardous, lowering pH levels is essential before releasing the water to wastewater systems. There are various methods used to lower pH, but the addition of an acid is the usual option. Some centers pass the water through gaseous carbon dioxide to lower its pH level.
A construction site generates considerable waste regardless of its magnitude and timeframe. Through the processes mentioned above, the concrete slurry you generate is transformed into safe water that is safe to release into wastewater systems.
This ensures you comply with your area’s environmental laws and reduces construction cost by reusing of the concrete solid generated.