2. Shaping resourceful-cities
Cities and megacities around the world face new challenges, including urbanisation and demographic growth. By 2030, 60% of the world’s population will be concentrated in 600 cities. It is therefore essential that cities are constructed, starting right now, around man, his needs and requirements. SUEZ mobilises its assets to make these resourceful cities attractive. Mumbai, for example, with a population of over 15 million, has experienced intense urbanisation and strong demographic growth, which have increased the pressure on its water resources in recent years. In this context, the management of waste water has become a major challenge for the local authorities. In October 2016, the city signed a contract with SUEZ to design and build a wastewater treatment plant in Colaba. The project is part of a sanitation infrastructure development programme implemented by the Indian megacity to meet the needs of its growing population. SUEZ also recovers the calories available in the city centre to produce renewable energy from the hidden resources contained in the wastewater networks, groundwater and even in the hot water from showers and swimming pools. This process, called Degrés Bleus, is deployed in around fifteen sites in France, notably to heat the offices of the Elysée Palace. With this scheme, the Group makes clear its commitment to the circular economy approach, based on the principle of continuity in the product, waste, material, water, energy cycle.
3. Towards sustainable agriculture
The reuse of wastewater is an essential alternative for agriculture in the future. Growth of the world’s population necessarily goes hand in hand with an increase in agricultural production, but the amount of farmland is decreasing significantly and water resources are dwindling. Today’s farmers face a two-fold challenge: improving the productivity and profitability of their crops while preserving natural resources. SUEZ, aware of these stakes, is committed to helping farmers to adopt a circular economy approach and to continue to improve their practices. Using treatment techniques such as ultraviolet disinfection, reverse osmosis or membrane filtration, the Group is able to recycle wastewater without generating pollutants. The use of ultrafiltration membranes is particularly effective to provide water suitable for the needs of agriculture and industry. With a production of 800 million m3 of wastewater reused every year, SUEZ aims to multiply its alternative water offer by three by 2020.