ADRICOSM-EXT PROJECT (ADRIatic sea integrated COastal areaS and river basin Management system pilot...

ADRICOSM-EXT PROJECT

(ADRIatic sea integrated COastal areaS and river basin Management system pilot project - EXTension)

WP2 – INTEGRATED CATCHMENT SIMULATOR SYSTEM ICSS FOR A RIVER TEST SITE

ITALIAN MINISTRY OF FOREIGN AFFAIRS

ITALIAN MINISTRY FOR THE ENVIRONMENT AND

TERRITORY

ADRICOSM IOC-UNESCO

ING. ALESSANDRO BETTIN

ADRICOSM-EXTension Final Meeting, ADRICOSM-EXTension Final Meeting, - Roma 20-21 November 2006- Roma 20-21 November 2006ADRICOSM-EXTension Final Meeting, ADRICOSM-EXTension Final Meeting, - Roma 20-21 November 2006- Roma 20-21 November 2006

WP2: INTEGRATED CATCHMENT SIMULATOR SYSTEM FOR A RIVER TEST SITE

• Task 2.1 - Definition of pilot area and mobilization

• Task 2.2 - Data Collection and Database Implementation

• Task 2.3 - Models set-up and implementation


Task 2.1 Definition of pilot area – River Ishem

historical flow •Average = 18,10 m3/s•Maximum = 1200 m3/s •Minimum = 1,6 m3/s


The City of Tirana

– Population estimated is 500.000 (1.000.000 considering surrounding Villages)

– Average altitude is 90 meters above sea level, annual rainfall is 1200 mm

– Combined sewer system with many overflows into the River Lana and into the River Tirana

– Foul water is discharged without treatment


Tirana and surrounding rivers

TiranesTiranes

LanaLana


River Lana and sewer discharge

CSO – Combined Sewer Overflow

0

5

10

15

20

25

8.00 9.00 10.00 11.00 12.00

Time

Q (

mc

/s)

0

100

200

300

400

500

600

700

Co

nce

ntr

atio

n (

mg

/l)

Pollutants (COD)

Flow


• Basic characteristics of the ISHEM River basin

• Flow records from permanent stations

• River cross sections

• Detailed maps of the river area 1:25.000

• Population

• Water quality parameters from historical measurements

Task 2.2 Data Collection – River ISHEM


Task 2.2 Data Collection – Tirana Sewer System

• Network maps and drawings

• Digitalized drawings of the sewer system

• Longitudinal profile of main collectors

• Network schematization

• Watershed design

• Design rain events (5 Years Return Period – 60’)

• Population


• MOUSE RUNOFF: surface runoff models for urban catchment applications

• MOUSE HD: hydrodynamic network model with RTC capabilities

• MOUSE TRAP: pollutants processes affecting catchments surfaces and drainage networks (Advection/Dispersion)

MOUSE is a professional engineering software tool for the simulation of hydrology, hydraulics, water quality and sediment transport in urban drainage and sewer systems

MOUSE DHI – MAIN FEATURES


MOUSE sewer model - HD module• Population:

514,000

• Area: 1,234 has.

• 264 nodes

• 280 links

• 106 catchments

• 5 outlets: 4 discharging to Tiranes river and 1 discharging to Lana river

• 14 CSOs to Lana River (Total discharge in LANAOUT)

• No WWTP exists in Tirana.


MOUSE sewer model – Hydrodinamic Simulations

• Simulations were conducted for two conditions:– Dry Weather Flow– Wet Weather Flow, design rainfall (TR =

5yrs, 1 hour duration)

Outlet flow

0

2

4

6

8

10

12

14

16

18

8.38 9.07 9.36 10.04 10.33 11.02 11.31 12.00 12.28 12.57 13.26time

m3

/s

OUT2

OUT5

OUT4

OUT6

OUT3

LANAOUT

Design Event

TR = 5y, 60 minutes duration

•Total Discharge = 137.000 m3

•Total COD = 164.000 Kg

•Total SS = 8.500 Kg


MOUSE sewer model – Water Quality module

COD concentrations at main outlets in DWF condition

06:00:001-1-2006

09:00:00 12:00:00 15:00:00 18:00:00 21:00:00 00:00:002-1-2006

03:00:00 06:00:00

237.6

237.7

237.8

237.9

238.0

238.1

238.2

238.3

238.4

238.5

238.6

238.7

238.8

238.9

239.0

239.1

239.2

239.3

239.4

239.5

239.6

239.7

239.8

239.9

240.0

[mg/l] Time Series Concentration in nodes, COD, Concentration in nodes, COD,0UT6OUT4OUT50UT2OUT3


MIKE11 DHI – MAIN FEATURES

The software MIKE 11 (DHI) allows to simulate:

• open channel flow and floods in surface waters (rivers, streams, channels, etc.)

• unsteady flow conditions and dynamics of water quality (BOD, NH4, DO) along the modelled river

• solid transport and fluvial morphology (erosion - sedimentation)

• “Dam break” effect scenarios and flood events forecast in real time


The river model has two secondary branches, the TIRANES river (22 km) and the LANA River (23 km), and one main river, the ISHEM, with a length of 35 km.

MIKE11 river model – HD module


MOUSE-MIKE11 Integration

• The OUTLETS and CSOs modelled in MOUSE were considered as point sources of pollution to the river (boundary conditions)

• MOUSE results (COD, NH4 and TSS) were imported into MIKE 11


Results: Water Quality in the river in Wet Weather

0.0 2000.0 4000.0 6000.0 8000.0 10000.0 12000.0 14000.0 16000.0 18000.0 20000.0 22000.0[m]

40.0

60.0

80.0

100.0

120.0

140.0

160.0

180.0

200.0

220.0

240.0

260.0

[meter]

10000000.0

20000000.0

30000000.0

40000000.0

50000000.0

60000000.0

70000000.0

80000000.0

90000000.0

100000000.0

110000000.0

120000000.0

130000000.0

[mu-g/m 3̂]Maximum

LANA 0 - 22863

0

67

31

22

86

3

COD130 mg/l RIVER LANA

10000.0 15000.0 20000.0 25000.0 30000.0 35000.0[m]

0.0

20.0

40.0

60.0

80.0

100.0

120.0

140.0

160.0

180.0

200.0

[meter]

10000000.0

15000000.0

20000000.0

25000000.0

30000000.0

35000000.0

40000000.0

45000000.0

50000000.0

55000000.0

60000000.0

65000000.0

70000000.0

[mu-g/m 3̂]Maximum

ISHEM 0 - 22112

77

92

99

32

10

56

21

07

63

22

11

2

ISHEM 22112 - 57531

COD

Lana Inlet

75 mg/l RIVER TIRANA


Results: Water Quality in the river in Dry Weather

0.0 2000.0 4000.0 6000.0 8000.0 10000.0 12000.0 14000.0 16000.0 18000.0 20000.0 22000.0[m]

40.0

60.0

80.0

100.0

120.0

140.0

160.0

180.0

200.0

220.0

240.0

260.0

[meter]

0.0

5000000.0

10000000.0

15000000.0

20000000.0

25000000.0

30000000.0

35000000.0

40000000.0

45000000.0

50000000.0

55000000.0

60000000.0

[mu-g/m 3̂]Maximum

LANA 0 - 22863

0

67

31

22

86

3

COD60 mg/l RIVER LANA

Lana Inlet

12 mg/l RIVER TIRANA

5000.0 10000.0 15000.0 20000.0 25000.0 30000.0 35000.0 40000.0 45000.0[m]

0.0

20.0

40.0

60.0

80.0

100.0

120.0

140.0

160.0

180.0

200.0

220.0

[meter]

0.0

1000000.0

2000000.0

3000000.0

4000000.0

5000000.0

6000000.0

7000000.0

8000000.0

9000000.0

10000000.0

11000000.0

12000000.0

[mu-g/m 3̂]Maximum

ISHEM 0 - 22112

77

92

99

32

10

56

21

07

63

22

11

2

ISHEM 22112 - 57531

46

72

1

COD


Conclusions

• Tirana sewer system discharges a big amount of polluters in the surrounding receiving waters both in dry weather and in wet weather.

• The total flow discharged in wet weather during 4 hours (5Y 60’) is comparable with the total foul water produced during 24 hours in dry weather (500.000 eq.inh.).

• River Lana is the most critical branch due to the low flow and the high discharge.

• Improvements will be achieved with the following works:– building of the waste water treatment plant – restructuring and control of combine sewer overflows– Implementation of a continuous monitoring system of flow,

rain and water quality

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