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Meteor™- MBBR BIOLOGICAL PURIFICATION OF WASTEWATER BY MOVING BED CULTURES URBAN WASTEWATERP-PPT-ER-011-EN-1107 COMPLETE TREATMENT OF WASTEWATER WITH A VERY COMPACT FOOTPRINT

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Urban CONTENTSWastewater Meteor™ MBBR • Meteor™ Range • The Meteor™-MBBR Model • Operating Principle • Component Parts of Meteor™-MBBR • Meteor™-MBBR Advantages • Some References 2

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UrbanWastewater Meteor™ RANGE Meteor™ Meteor™ is a biological treatment solution developed by MBBR Degrémont for the remediation of wastewater using fluidized cultures grown on biofilm media. Meteor™ RANGE Specific Preferential Concentration Models features of the Positioning in free sludge Strong points process For new facilities (biological basin) • Very compact – Biomass in the compact separation (CMDF MBBR form of biofilm NTK 400 mg/L – DAF) • High load variation • Mixed culture – less support Mixed biomass than in MBBR IFAS (free + biofilm) Total N 2 g/L • Renovation – increase in treatment quality 3

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OPERATING PRINCIPLE (1/3)Meteor™-MBBR combines a biological solution AND a compactseparation system (flotation or filtration depending on the cases,see the following pages).The carbon and nitrogen treatments are provided by a fixed culture onmobile biofilm media.Depending on the required quality of the effluent, the number of zonesused will be adapted differently: there will thus be at least 2 zones andup to 5 zones. TO SEPARATOR Unlike the Meteor™-IFAS, biofilm media is integrated into each zone of the basin and equipped with retention screens. 4

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OPERATING PRINCIPLE (2/3) Two types of configurations are proposed: they are a function of the level of suspended solids leaving the MBBR. Configuration n° 1: Meteor™-MBBR + High speed flotation Greendaf™ When the level of SS leaving the MBBR > 150 mg/LPRETREATEDAND SCREENEDWATER TO SEPARATOR + 5

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OPERATING PRINCIPLE (3/3) Configuration n° 2: Meteor™-MBBR + Filtration Compakblue™When the level of SS leaving the MBBR < 150 mg/L (generally in thecase of primary settling) + 6

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UrbanWastewater COMPONENT PARTS – RETAINING SCREEN Meteor™ Protection for the MBBR environment 2 versions: In an aerated zone: In an anoxic zone: The screen allows for the retaining of the supports in the treatment zone. 7

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Urbanwastewater COMPONENT PARTS – AERATION Meteor™ MBBR 2 types of aeration to be adapted to each situation Medium bubbles Fine bubbles 8

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Urbanwastewater COMPONENT PARTS – THE MEDIA Meteor™ MBBR 3 different medias for case-by-case adaptation. NAME Meteor 660 Meteor 515 Meteor 450 9

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Urbanwastewater Meteor™-MBBR ADVANTAGES Meteor™ MBBR FLEXIBLE USE: • Works continuously and does not require any washing of the materials, • Modular and upgradable equipment that can be adapted to all plant sizes and all treatment objectives (pre-denitrification, treatment of carbon, nitrification, post-denitrification), • Allows for substantial load variations, so its use is perfectly suited to tourist areas, • Adapted to the treatment of low-temperature effluents. PERFORMANCE & ENVIRONMENT: • Optimal compactness (of the biological unit and the separator), • Allows for targeted treatment and therefore optimizes nutrients (nitrogen, carbon), • Includes reactors that reproduce natural purification, • Meets the strictest discharge standards. 10

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Urbanwastewater SOME REFERENCES Meteor™ MBBR References: CAPACITY PROJECT USE Type of treatment (m3/d) Moundville, WV, USA 7,000 Renovation Elimination of the BOD Moorehead, MN, USA 23,000 Renovation Tertiary nitrification Anderson, SC, USA 5,000 Construction Elimination of the BOD Saïdabad, 470,000 Construction Pre-treatment in nitrification BENGLADESH 11