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Ing. Francesco Ciappelloni

Ecomondo 2010 Transnational Workshop: Efficient management of water resources Rimini, 4 th November 2010. “AUTOMATIC ANALYSER FOR BIOLOGICAL ACTIVITY MONITORING: EXPERIMENTATION IN CIVIL WASTE WATER TREATMENT PLANT WHICH TREATS LEACHATE”. Ing. Francesco Ciappelloni. SPES

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Ing. Francesco Ciappelloni

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  1. Ecomondo 2010 Transnational Workshop: Efficient management of water resources Rimini, 4thNovember 2010 “AUTOMATIC ANALYSER FOR BIOLOGICAL ACTIVITY MONITORING: EXPERIMENTATION IN CIVIL WASTE WATER TREATMENT PLANT WHICH TREATS LEACHATE” Ing. Francesco Ciappelloni

  2. SPES Società di Progettazione Elettronica e Software www.spesonline.com

  3. Environment SPES Business Unit SPIN System & Process Integration Systems Industry Energy www.spesonline.com

  4. INTRODUCTION Application field Activated sludge waste water treatment plants Aim Biological process monitoring and control Features Automated sampling and execution of biochemical analysis in batch reactor

  5. TITAAN(TITration Automatic ANalyser) Device that execute, automatically and continuously, batch analysis to assess biological processes parameters. REAL TIME WARNING PERIODIC MONITORING OF SLUDGE ACTIVITY ALARMS FEEDBACKS REMEDIES Chemicals dosing Energy saving Intervention request Overloads Inhibition risk Residual capacity Nitrogen removal rate Leachate toxicity

  6. TITAAN(TITration Automatic ANalyser) • COMPUTING UNIT • hardware and software applications • ANALYSIS AND SAMPLING UNIT • reactor, hydraulic circuits and load/discharge valves 3) CHEMICALS STORAGE AND DOSING UNIT chemicals tanks, peristaltic pumps and electrovalves DIMENSION: 100cm (W) x 50cm (D) x 170cm (H)

  7. TITAAN(TITration Automatic ANalyser) Computing unit • software applications for instrument control • data acquisition and storage in database • remote connection through web server • interface with external actuators to manage controls on the plant

  8. TITAAN(TITration Automatic ANalyser) PLT_Line Technology Browser web connection to the devices

  9. TITAAN(TITration Automatic ANalyser) • Analysis and sampling unit • reactor for analysis execution • temperature control system • circuit of influent and sludge loading and discharging • influent and sludge tanks equipped with mixer and aerators

  10. TITAAN(TITration Automatic ANalyser) • Chemical storage and dosing unit • The dosing system is composed by peristaltic pumps and mircoelectrovalves. • 4 dosing lines for reagents • 4 dosing lines for titrants • temperature is continuously controlled

  11. SET-POINT TITRATION Nitrogen biological removal Autotrophic biomass (aerobic condition) NH4+ O2 H+ NO2- O2 NO3- pH-Stat Balanced byNaOH DO-Stat Balanced by H2O2

  12. pH-DO Stat TEST pH and DO signals

  13. pH-DO Stat TEST NaOH and H2O2 cumulative volume

  14. TITAAN IN HERA WWTP • 75.000 PE – 2 lines • Sewage incoming • Pretreatments • Denitrification • Nitrification • Secondary settling • Effluent 4 6 5 2 3 ∙ 1

  15. VALIDATION PROTOCOL Activities conducted in agreement with HERA LABORATORY ANALYSIS (HERA lab in Forlì)Ammonia, nitrites and nitrates concentration of samples taken from Titaan reactor in different times during experiment execution NH4+ consumption rate NO2- and NO3-buildup rate TITAAN TESTSProvide sludge nitrifying activity as mgN-NH4/L

  16. VALIDATION PROTOCOL Maximum deviation betweenTitaan activity value andLab ammonia consumption rate: 85% 115% TITAAN activity extimation has been considered acceptable

  17. TITAAN IN HERA WWTP AOB_DO 20°C April – October

  18. INHIBITION TEST OBJECTIVES OF TITAAN TESTS • To quantify leachate loading impact on sludge maximum nitrifying activity • To provide plant management support • To assess residual treatment capacity

  19. INHIBITION TEST TEST CONDITIONS

  20. INHIBITION TEST TEST RESULTS

  21. TITAAN IN HERA WWTP Daily scheduler User can program different schedulers Test to be executed Daily time of start test

  22. TITAAN IN HERA WWTP Operativity percentage Total tests = 550 87% Successfully tests 6% No pH setpoint 3% No DO setpoint 2% Problems of power supply 2% Technical problems

  23. TITAAN IN HERA WWTP • ORDINARY MAINTENANCE • Monthly ordinary maintenance: • electrochemical sensors cleaning and calibration • electrovalves calibration • chemicals replacement • CHEMICALS USED FOR TITAAN TEST • Hydrogen peroxide 0,2M • Sodium hydroxide 0,2M • Ammonium Chloride 1g N-NH4/L • Allylthiourea (nitrification inhibitory) 1g/L

  24. THANK YOU FORYOUR ATTENTION For further information: Hall C1 Stand 076 www.spesonline.com francesco.ciappelloni@spesonline.com

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