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Emission reductions and environmental improvements

The environmental impact and requirements in public tenders make it necessary to develop new technology to reduce pollutant emissions from machinery and fixed installations, control effluents and reduce water consumption.

Emissions are controlled in more than 800 vehicles in FCC's fleet that are powered by natural gas, in the high-pressure natural gas filling stations and in all the vehicles specified in street cleaning, waste collection, gardening and fountain maintenance and even sewer cleaning, resulting in the development of over 30 different vehicles.

This technology eliminates the bulk of exhaust gas and sound emissions and is ahead of the EU's legislation on emissions. Additionally, the company has introduced the "vehicle of the future", i.e. using electric traction. Accordingly, it is in a very advanced position in terms of technology due to the sustainability features of these vehicles, whose performance is comparable to that of diesel- and gas-powered vehicles. There are a total of 32 units in service.

The other major environmental issue is water consumption, which is up to two litres per inhabitant per day, as water is used in street cleaning and washing, in washing waste containers and vehicles, and in the day-to-day uses in changing rooms and machinery depots. Municipal services represent a high degree of water consumption and it is vital to use technologies that can reduce or eliminate the use of drinking water. For hygiene reasons and to comply with legislation on health and safety, however, the water that is used must be close to drinking quality. Given these factors, a water management process was designed so as to practically eliminate the net consumption of clean or drinking water.

The treatment consists of purifying and processing water obtained from the sewage plant with a view to ensuring, at all times, a sufficient supply of water of a quality that is suitable for use in services, having regard to seasonal and day-to-day demands. Water used in changing rooms must necessarily be potable; it is then processed in the vehicle depots and used subsequently for washing vehicles. The overall outcome of this process is zero net consumption of drinking water.