Pretreatment in a sewage treatment plant.

In this second video about the wastewater treatment process, we focus on explaining the pretreatment phase in a treatment plant.
Continuing with the explanation of the part of the sanitation process that we gave you in the first video, the sewer, and which you can see at • La gestió del clavegue... , we now talk about the part that corresponds to the pretreatment.
We tell you what the function of the pretreatment is and its main elements, the roughing elements, the skimmer and the degreaser.