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Treatment of Urban Wastewater & Reuse

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Treatment of Urban Wastewater & Reuse treatment addressing a dual challenge for of public health and the environment urban wastewater & reuse to reduce the treating environmental impact wastewater of cities... 9.1 billion inhabitants. This is the figure that the world population could reach in 2050 (United Nations - WWDR4) 2.6 billion people have no access to improved sanitation (United Nations - WWDR4) 90 % of wastewater in developing countries flows untreated into rivers, lakes and highly active coastal Global population growth, urbanisation and new production and areas consumption methods present a dual challenge in terms of public (United Nations - WWDR4) health and environmental conservation for emerging and developed countries. On a worldwide scale, the treatment of wastewater is one of the key factors in protecting water resources. All the Group’s brands (Degrémont, Ozonia, Aquasource, Ondeo IS, Ameriwater, Infilco, Poséidon, etc.) have been using the SUEZ single brand since March 2015. 50 % From now on, water treatment technologies and expertise of the of the world’s fresh water “Treatment Infrastructure” business line will be identified by the reserves are polluted degremont® label. 2 SUEZ - treatment of urban wastewater & reuse … a SUEZ’s offer for local authorities SUEZ’s comprehensive water cycle expertise and know-how make it a key player in conserving water resources. Its water treatment experts offer local authorities latest-generation wastewater treatment plants that are adapted to local challenges, highly efficient, innovative and environmentally friendly. the SUEZ offer: four outsatnding advantages proactive R&D complementary areas of activity With 75 years of experience as SUEZ’s worldwide network of • Customised design & build for new a builder-operator and many researchers and experts are plants, extensions or rehabilitations. references for local authorities and developing key innovations to As both project managers and water industry, SUEZ has been able to anticipate regulation and future treatment experts, SUEZ’s dedicated anchor its position as a global leader challenges in the field of sanitation, specialist teams handle all the in wastewater treatment, thanks to: and to design the wastewater stages in the design and building • its expertise in managing the wide treatment plant of the future: optimisation of traditional process: from the choice of process range of discharge collected; • treatments; and setting, managing purchasing, • its know-how in designing and managing compact facilities; development of tertiary treatments site supervision, installation of • • its know-how in odour management; such as filtration, microfiltration, equipment and operational start-up. • its expertise in sludge recovery ultrafiltration, etc.; and the production of alternative • development of refining techniques • Operation and service solutions energies; such as ozonisation, UV disinfection, for daily management, facilities • its concern for safety, which is the etc.; optimisation, preservation of assets essence of its processes; optimisation of energy efficiency. and for “custom” services such as • • its extensive past experience, which technical support, supply of spare enables it to optimise the day-to-day parts, upgrades, training, etc. performance of facilities; SUEZ’s water treatment experts • its preventative maintenance plans, are developing the best technique “Packaged” equipment and • which prolong the life of the plant combinations so as to give technologies to increase or diversify and preserve assets; wastewater a new lease of life by the performance of treatments or • its expertise in wastewater reusing it in agriculture or industry. for a modular, compact and easy-to- treatment technologies, which has operate design. made it a pioneer in reusing treated wastewater. • Financing in the form of a BOT (Build, Operate, Transfer) contract, 2,500 wastewater a genuine partnership in which treatment plants designed and built SUEZ is fully involved right up the by SUEZ worldwide financing management. 26 million people benefit from the treatment of their wastewater by SUEZ’s water treatment experts SUEZ - treatment of urban wastewater & reuse 3 treatment solutions that have proved their worth Building on their experience, SUEZ’s water treatment experts can respond to local challenges with the aim of conserving water resources and protecting biodiversity across the globe. If necessary, they are designing their treatment plants so that the treated water can be reused, whilst complying with the constraints of environmental and public health regulations. Biomaster Densadeg® (pre-treatment) (primary settling and tertiary treatment) This aerobic This settler biological using external ® degrading sludge Biofor procedure is recirculation (biological treatment) specifically combines a This for greasy rapid physical- biofiltration residue from chemical settling (flocculation + solution the plant’s lamellar clarification) with a sludge combines degreasers, fat boxes from thickening pre-treatment in a single Culture fixed filtration with restaurants, canteens, etc. It is a work. As a primary settling stage, it intensive biological treatment. The compact and stand-alone system is used to eliminate SS¹ and colloids natural mineral filter media retains that is easy to automate and which and to reduce the BOD² and the COD³. any suspended solids. Carbonaceous eliminates the cost of transporting As a tertiary treatment stage, it treats and/or nitrogenous pollution is fatty waste to landfill or incineration phosphorus and any residual SS. eliminated through the development plants. Its modular and lamellar design of natural bacteria in the form of bio- makes it a compact unit which is film (purifying biomass) that attaches suited to plants of all sizes. on the filter media. Sedipac™ 3D The performance of this treatment (primary settling) meets the standards for all types This combined Combigreen™ of effluent (low temperature, large treatment (biological treatment) variations in flow and/or load, diluted, process This biological etc.). This compact and modular integrates process solution is suited to space and three functions combines architectural constraints. in one single Free culture an annular work: grit removal, grease removal aeration channel with a central and settling. The system works at settling basin. The hydraulic design high-speeds of treatment and without of the aeration channel/settling reagents. The water is clarified basin combination ensures savings efficiently using lamellar modules. up to 15% in the energy required to It can be used in any type of facility re-circulate sludge and pump raw upwards of 15,000 PE. water. Combining these two treatment phases into one process reduces the total footprint of the plant up to 25%. 1 SS = suspended solids 2 BOD = biological oxygen demand 3 COD = chemical oxygen demand 4 SUEZ - treatment of urban wastewater & reuse Aquazur™ V Pulsagreen™ systems are chosen for their efficiency (tertiary treatment) (tertiary treatment) in SS reduction, disinfection, and This downflow This lamellar removal of the micropollutants open sand settling attached to the retained particulate filter retains clarifier uses matter. SS and their a powdered associated activated pollutants. It carbon Ozoneur enables filtration at high speeds of (PAC) pulsed (tertiary treatment) filtration. Whether or not it follows blanket to reduce the majority of The ozone on from a settling basin, it helps to micropollutants. It is even more (O3) has a very retain micropollutants associated with effective on adsorbable compounds substantial SS and to obtain high quality filtered such as pesticides and alkylphenols. oxidising water. The pulsations optimise the contact capacity. When of the dissolved organic matter and it oxidises the micropollutants with the activated organic Filtrazur™ carbon, encouraging their adsorption, substances, the ozone destroys a (tertiary treatment) then their removal during the lamellar number of micropollutants (or makes This Mediaflo settling. them more easily biodegradable) floating and pathogenic organisms (viruses material open and bacteria). It degrades a broad filter operates Ultrablue™ spectrum of persistent organic with an (tertiary treatment) micropollutants in the effluent. It ascending flow. The Mediaflo ensures These also acts on colour and organic that residual polluting particles are ultrafiltration macropollution. captured. It makes it easier to capture membranes let nitrifying bacteria, thus ensuring small molecules that ammonium is further eliminated (water and salts) on the basis of the rate of dissolved through, but block oxygen. molecules with a high molar mass (polymers, proteins and colloids). These treatment SUEZ - treatment of urban wastewater & reuse 5 to guarantee cutting-edge the future of our solutions resources Their familiarity with local problems across the globe, In order to support the development of local combined with their expertise, mean that SUEZ’s water authorities, depending on the quality of the effluent treatment specialists are able to anticipate changes in for decontamination and the sensitivity of the receiving this field and develop their own technology, using it to environment, they design treatment lines of various create their own treatment combinations. degrees of complexity, optimising the balance between quality, price, operating costs, energy efficiency and environmental footprint. Meteor® water treatment line. This limits the (biological treatment) Greenbass™ impact of
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