Evolution in the design of soundproof remediation modules

The World Health Organisation considers noise to be any sound above 65 decibels during the day and 55 decibels at night. It recommends that, during rest hours, this threshold should not exceed 45 decibels. The impacts of exposure to higher noise levels have a direct effect on the quality of life and can increase the risks of hearing loss, tinnitus, cardiovascular problems, lack of concentration, depression and stress.

Aware of this and of the fact that the work associated with soil and water decontamination often involves the use of mechanical equipment that can generate annoying noise, we have been working on the development of new designs for soundproofed modules. This is particularly important for projects that use high vacuum pumps to achieve remediation goals, especially when installed in urban or residential areas.

As a result of this design and innovation work carried out at the Litoclean Innovation Centre (in Spanish CIL: Centro de Innovación Litoclean) in Rubí, modules have been created that are capable of emitting noise below current nighttime regulations, reducing noise levels to below 40 decibels with measurements taken from the point of emission. The modules are fitted with a double soundproofing cabinet that absorbs noise, allowing them to run 24 hours a day without disturbing the neighbourhood. They are so effective that "if someone were to approach the equipment, they would doubt whether it was running or not," proudly explains Ferran Mundó, head of Internal Services at CIL.

Efforts to mitigate the impact of noise in urban environments are essential if we want to provide a healthier environment for those who live there. It is part of our responsibility and is an example of concrete actions that we want to highlight, especially this  week when the International Noise Awareness Day is celebrated.