Environmental management of CDW at the plant starts with the right choice of materials to recycle and the treatments they will receive according to their type, resulting in new materials that can be reused and thus minimizing their environmental impact.
DESTINATION A "CONCRETE PLANT"
Here is where materials made up almost entirely of concrete, undergo a number of processes (triage, crushing, screening …) to obtain recycled concrete aggregate.
DESTINATION B "MIXED CDW PLANT"
For trucks containing a lower percentage of concrete mixed with other CDW of various kinds.
DESTINATION C "PURCHASE OF MATERIAL"
For trucks buying recycled concrete aggregates of different particle sizes depending on use.
These recycled concrete aggregates are obtained as a result of previous destinations (A and B).
With the new plant for mixed debris Salmedina increased by four its processing capacity of CDW, allowing it from then on, to treat up to 7,800 tons per day – the equivalent of two weeks treatment of waste generated in the demolition of the Windsor building. The new plant cost five million Euros and has created 25 new jobs.
Salmedina’s waste processing plant has the capacity to treat 250 tons of concrete CDW per hour and 600 tons of mixed CDW per hour, which means it can treat 7,800 tons / day, with a percentage of recovery and recycling of 70 %, using both concrete and mixed debris plants.
The plant is divided into two-level platforms. The upper platform is used for the unloading of vehicles, while the lower level houses the machinery and the area for stockpiling and dispatch of material.
A. Concrete CDW:
CDW from building sites, clean of other materials. This type of waste is subjected to a recycling process in three operational stages:
1. Grinding phase to reduce the size of debris.
2. Sieving phase, to separate materials resulting from the previous phase.
3. Stockpiling phase, where the final aggregates are stored in an area intended for this purpose.
B. Mixed Construction and Demolition Waste:
This stage primarily processes CDW to extract materials such as plastics, paper, cardboard or wood that are mixed with the waste, separating and removing them manually and mechanically.
The procedure is similar to concrete CDW recycling: once the materials have been separated a second selection is performed before crushing and screening the material.
C. Purchase of material:
All CDW treated in the plant that can be reused is made available to the public to reduce the environmental impact by decreasing the use of natural aggregates.
MIXED DEBRIS LINE
Salmedina’s current mixed plant increased by four its processing capacity of CDW compared to the original project. The mixed debris plant can treat 600 tons of mixed CDW. The new plant cost five million Euros and has created 25 new jobs.
Salmedina’s waste processing plant has the capacity to treat 250 tons of concrete CDW.
Salmedina’s plant is divided into two-level platforms. The upper platform is used for the unloading of vehicles, while the lower level houses the machinery and the area for stockpiling and dispatch of material.
The concrete and mixed lines together can treat an average of 7,800 tons per day – the equivalent of two weeks treatment of waste generated in the demolition of the Windsor building with a recycling rate of 100% and 70% recovery.
CCR LAS MULAS
MIXED DEBRIS LINE
The mixed debris line of CCR Las Mulas has a capacity of 300 t / hour.
The waste treatment plant 100 t / hour.
The concrete and mixed lines can treat 400,000 t / year.
Salmedina Treatment of Inert Waste is a company that provides treatment and management of construction and demolition waste. It is located in the district of Villa de Vallecas, in the municipality of Madrid.
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