waste water treatment - conforming to eu waste water directive study case of tg. mures
DESCRIPTION
Waste water treatment - conforming to EU Waste Water Directive study case of Tg. Mures. Otto DARABAN General Director SC Compania Aquaserv SA. Who we are?. Status: regional operation company shareholders 6 Local Councils and Mures County Council Consiliul Judetea Mures - PowerPoint PPT PresentationTRANSCRIPT
Waste water treatment - conformingWaste water treatment - conformingto EU Waste Water Directiveto EU Waste Water Directive
study case of Tg. Muresstudy case of Tg. Mures
Otto DARABANOtto DARABAN
General DirectorGeneral DirectorSC Compania Aquaserv SC Compania Aquaserv
SASA
Who we are?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:820Operation locations: 6 city and 14 locations in rural areeaInfrastructure:
•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
HistoryHistory
1967 -1979 • primary treatment• two digesters 2x1500 mc• sludge drying beds 0.25 ha• sludge lagoon 40000 mc
1909 - 1911 • 34 km combined sewer• preliminary treatment plant• pumping station
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
New institutional framework New institutional framework
Waste water treatment
Waste water treatment
Low treatment efficiency
High ware of the equipment
High electrical consumption
More stringent effluent standardsHigh energy tariffs
Low service tariffs
No finances fromthe Government
MUDP I Project-trying to MUDP I Project-trying to survivesurvive
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
MUDP I Project-scope of the worksMUDP 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
Project CHP-new resourcesProject 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
Period: 1998-2000
CHP plant
• fuel: biogas/CH4
• capacity: 450 kWe+730 kWth
ISPA Project-EU supportISPA Project-EU support
Objective of the project: to rehabilitate the existing infrastructure
Budget: • Total 28 Mil Eu (21 UE
grant, 7 EBRD loan)• Comp B WWTP - 8.5 Mil
Eu
Contractor: Allewijse & Spaans Babcock
(The Netherlands)
Finish: Dec 2007
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
ISPA Project-scope of the works(1)ISPA Project-scope of the works(1)
Preliminary treatment: new structure
• screens (coarse & fine)• compactor for screenings• combined sand/grease
separator• sand washing unit
Storm management• refurbishment of the
existing balancing tank (sugar factory)
• storm water return pumping station
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
ISPA Project-scope of the works(2)ISPA Project-scope of the works(2)
Power supply• island operation for CHP• refurbishment of
transformer house• replacing main power
cables
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
Process control• complete automation• new SCADA system• automated sampling system
Where we are now? Where we are now? • 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
Conc. (mg/l)
Efficiency (%)
Non conform samples
Conc. (mg/l)
Efficiency (%)
Non conform samples
BOD-5 25 70-90 18 22.5 81 22COD-Cr 125 min. 75 18 42.4 78 11TSS 35 min. 90 18 28.6 92 7N tot 10 70-80 0 18.6 22.6 140P tot 1 min. 80 0 2.9 15.8 17
Parameter91/271/EEC Limits Aquaserv resoults in 2007
Performance of the plant
What is left?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.)
ConclusionsConclusions
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
Thank you!