Waste water treatment - conforming to EU Waste Water Directive study case of Tg. Mures - PowerPoint PPT Presentation

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Waste water treatment - conforming to EU Waste Water Directive study case of Tg. Mures

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  1. Waste water treatment - conformingto EU Waste Water Directivestudy case of Tg. Mures Otto DARABANGeneral DirectorSC Compania Aquaserv SA

  2. Who we are? • Status: regional operation company shareholders 6 Local Councils and Mures County Council Consiliul Judetea Mures • Turnower:38 mil RON (1 Euro=3.7 RON) • Employees:820 • Operation locations: 6 city and 14 locations in rural areea • Infrastructure: • water treatment plants 7 • waste water treatment plants 6 • water network 936km • sewers 620km • Servicies: • drinking water treatment&distribution 15 mil mc/y • waste water collection&treatment 14,1 mil mc/y • Clients: • hoseholds 230,486 • industrial&institutions 15,107

  3. History • 1909 - 1911 • 34 km combined sewer • preliminary treatment plant • pumping station • 1967 -1979 • primary treatment • two digesters 2x1500 mc • sludge drying beds 0.25 ha • sludge lagoon 40000 mc • 1980 -1989 • secondary treatment (900 l/s) • digesters 2x4000 mc • gr. thickeners 2x1568 mc • biogas holders 2x1000 mc • sludge pumping stations • sludge drying beds 1.85 ha

  4. New institutional framework Low treatment efficiency No finances from the Government High ware of the equipment Waste water treatment Low service tariffs High electrical consumption High energy tariffs More stringent effluent standards

  5. MUDP I Project-trying to survive • Objective: • Investments in infrastructure • Realization of the operator’s financial independence • Management improving • Budget: Total 6.6 Mil $ (3.2 Mil $ for WWTP) • 50% EBRD loan • 45% Romanian Government • 5% Local Council Tirgu Mures Period: 1995-2001

  6. MUDP I Project-scope of the works • Extension of the secondary treatment’s capacity • Finally clarifier • Activated sludge pumping station • Improving sludge treatment • Digester’s rehabilitation • Sludge thickening • Sludge dewatering

  7. Project CHP-new resources Objective: Reduce CO2 emission • Budget: total 1.1 Mil $ (for WWTP) • 1 Mil $ Dutch Government’s grant • 0.1 Mil $ company’s contribution • CHP plant • fuel: biogas/CH4 • capacity: 450 kWe+730 kWth Period: 1998-2000

  8. ISPA Project-EU support • Budget: • Total 28 Mil Eu (21 UE grant, 7 EBRD loan) • Comp B WWTP - 8.5 Mil Eu Objective of the project: to rehabilitate the existing infrastructure • Results of the project: • waste water treatment for a perspective year 2020, including surrounding villages • comply with 271/91/EEC • reducing risk regarding public health • decreasing pollution downstream Mures River Contractor: Allewijse & Spaans Babcock (The Netherlands) Finish: Dec 2007

  9. ISPA Project-scope of the works(1) • Preliminary treatment: new structure • screens (coarse & fine) • compactor for screenings • combined sand/grease separator • sand washing unit • Primary treatment: • repair of primary clarifiers • replacing the PC bridges • automated sludge withdrawal system • refurbishment of sludge pumping station • refurbishment of decanted water pumping station • Storm management • refurbishment of the existing balancing tank (sugar factory) • storm water return pumping station

  10. ISPA Project-scope of the works(2) • Secondary treatment: • refurbishment of the biological reactor • refurbishment of activated sludge pumping station • automated sludge withdrawal system • refurbishment of sludge pumping station • refurbishment of decanted water pumping station • Power supply • island operation for CHP • refurbishment of transformer house • replacing main power cables • Process control • complete automation • new SCADA system • automated sampling system

  11. Treatment capacity 1200 l/s • Sludge cake (18-20% DS) • 22,000 mc/y • Biogas produced • 1,400,000 mc/y • Energy recovered • ~3,300 MWh/y electrical • ~5,100 MWh/y thermal Where we are now?

  12. Performance of the plant

  13. What is left? • Implement Directive 91/271/EEC in the operation region of Compania Aquaserv according to the EU negotiation documents and improuving the sludge management&disposal • Master Plan for Mures county (2037) identyfies 1,320 mil Euro, from which: • drinking water 650 mil Euro • waste water 670 mil Euro • first priority investments prepared for EU cohesion founds 89 mil Euro, from which : • collection systems 27 mil Euro (20 ext. + 7 reab.) • WWTP 18 mil Euro (10 newTP + 8 reab.) • DWT facilities 31 mil Euro (15 new TP + 16 reab.) • water distrib. systems 13 mil Euro (8 ext. + 5 reab.)

  14. Conclusions WATER means LIFE! WASTE WATER TREATMENT means CIVILISATION ! • High efforts were made by community of TG. Mures • Operator company’s contribution • identifying&implementing projects • properly operation of the infrastructure

  15. Thank you!