Greenbass                     ™                       REGULATION OF SEQUENCED AERATION                       FOR ACTIVATED...
UrbanWastewater                CONTENTS   Greenbass™                •   Energy, a major issue in water treatment          ...
Urban                ENERGY, A MAJOR ISSUE INWastewater      WATER TREATMENT   Greenbass™   To fight against climate chang...
UrbanWastewater                OBJECTIVES of Greenbass™   Greenbass™                 • Reducing energy consumption due to ...
OPERATING PRINCIPLE (1/2)Greenbass™ continuously adjusts the air flow provided to the tank as afunction of the needs.The s...
OPERATING PRINCIPLE (2/2)           The advanced regulation program           contains a patented algorithm which         ...
Urban                COMPARISON WITH TRADITIONALWastewater                REGULATION SYSTEMS   Greenbass™                 ...
UrbanWastewater                Greenbass™ ADVANTAGES   Greenbass™                • UNIVERSAL: the product is adjustable to...
UrbanWastewater                SOME REFERENCES   Greenbass™                       NAME                 SIZE OF     COMMISS...
CASE STUDY:                                TOURNUS, FRANCECONTEXT:                                  DESIGN:• Construction ...
CASE STUDY:          TOURNUS, FRANCE                                 4.515%energy                                 tons    ...
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Greenbass, regulation of sequenced aeration for activated sludge

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Precisely controlled energy consumption for wastewater treatment plants

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Greenbass, regulation of sequenced aeration for activated sludge

  1. 1. Greenbass ™ REGULATION OF SEQUENCED AERATION FOR ACTIVATED SLUDGE URBAN WASTEWATER PRECISELY CONTROLLED ENERGYP-PPT-ER-010-EN-1107 CONSUMPTION FOR WASTEWATER TREATMENT PLANTS
  2. 2. UrbanWastewater CONTENTS Greenbass™ • Energy, a major issue in water treatment • Greenbass™ Objectives • Operating Principle • Advantages of Greenbass™ • Some References • Case Study: Tournus, FRANCE 2
  3. 3. Urban ENERGY, A MAJOR ISSUE INWastewater WATER TREATMENT Greenbass™ To fight against climate change: • Reducing greenhouse gases • Limiting the environmental impact Controlling energy costs: • Improving the energy balance of facilities • Achieving energy self-sufficiency for some treatment plants • Diversifying sources of energy To meet stricter and stricter discharge standards: • Better treatment quality but it can consume more energy 3
  4. 4. UrbanWastewater OBJECTIVES of Greenbass™ Greenbass™ • Reducing energy consumption due to the aeration of biological treatment basins: – The elimination of excessive aeration peaks and energy waste. – A reduction of 10 to 15% in energy consumption compared with classic regulation systems (clock system on theoretical bases or dissolved oxygen / redox sensors). • Decreasing the operating costs of the water treatment plant • Guaranteeing treatment quality comparable with existing processes: – An accurate, real time indication of the nitrate and ammonium concentrations (main quality parameters of the treated water) – Complete degradation of the nitrogenous components 4 4
  5. 5. OPERATING PRINCIPLE (1/2)Greenbass™ continuously adjusts the air flow provided to the tank as afunction of the needs.The sensors immersed in the activated sludge directly and continuouslyindicate the variation in the ammonium and nitrate concentrations. 5
  6. 6. OPERATING PRINCIPLE (2/2) The advanced regulation program contains a patented algorithm which constantly recalculates the useful quantity of air as a function of the biological activity. It controls the starting and stopping sequences of the aeration and regulates the flow of the blown air. The blower – which can be equipped with a regulator – diffuses fine air bubbles which aerate the activated sludge and nourish the bacteria responsible for the nitrification. 6 6
  7. 7. Urban COMPARISON WITH TRADITIONALWastewater REGULATION SYSTEMS Greenbass™ (-) Aeration regulated based on a redox potential or the dissolved oxygen concentration is imperfect. (-) Systems coupled to a clock are indirect and partial. (-) Redox potential sensors require weekly maintenance. (-) In small plants, due to a lack of maintenance, the regulation often works in crippled mode. (-) When the treatment is made reliable, this leads to excess aeration 7 7
  8. 8. UrbanWastewater Greenbass™ ADVANTAGES Greenbass™ • UNIVERSAL: the product is adjustable to all sizes of facilities, new or in operation. • ADAPTABLE: Greenbass™ can be used with all air systems and all types of automated regulation. The air input can be with fixed or variable flow. • UNIQUE: a patent was filed for the Greenbass™ algorithm. • SIMPLE: the system offers simplicity of installation, maintenance and upkeep. • ECONOMICAL: Greenbass™ allows for optimization of the cost reductions from the OPEX and CAPEX 8 8
  9. 9. UrbanWastewater SOME REFERENCES Greenbass™ NAME SIZE OF COMMISSIONING OF SITE THE PLANT DATE Dijon, France 400,000 PE 2010 Pau, France 190,000 PE 2011 Tournus, France 10,500 PE 2012 Saint Michel Chef Chef, 65,000 PE 2012 France Camphin Phalempin, 7,700 PE 2012 France 9 9
  10. 10. CASE STUDY: TOURNUS, FRANCECONTEXT: DESIGN:• Construction of a new water • Treatment line: treatment plant with a capacity of – Standard pretreatment, 10,500 PE – Biological treatment (prolonged aeration N-DN + physical-chemical• Client: City of Tournus dephosphatation) – Clarifier• Commissioning: beginning of 2012• Energy consumption: 700,000 Expected treatment level: Total N 15 mg/L kWh/year including about 50 % for the biological basin.Specific features of theproject:The City of Tournus, which wasseeing increasing energyconsumption at its current plantdating from 1979, sought forthe future to receivecertification of controlled energyconsumption. 10
  11. 11. CASE STUDY: TOURNUS, FRANCE 4.515%energy tons of CO2savings avoided per year 11

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