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An innovative greywater treatment system for urban areas ... - SuSanA

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6.7 DATA TABLE FOR ECONOMIC CALCULATION OF GREYWATER TREATMENT<br />

PLANT<br />

Year Total<br />

invest<br />

(pipes<br />

and<br />

<strong>treatment</strong><br />

plant)<br />

[€/a]<br />

2% annual<br />

interest<br />

amount<br />

Invest<br />

<strong>treatment</strong><br />

plant<br />

[€/a]<br />

2%<br />

annual<br />

interest<br />

amount<br />

Maintenance<br />

[€/a]<br />

2%<br />

annual<br />

interest<br />

amount<br />

Energy<br />

costs<br />

[€/a]<br />

6.5%<br />

annual<br />

increase<br />

Total<br />

operation<br />

costs per<br />

year [€/a]<br />

Water costs<br />

(water+<br />

wastewater)<br />

per year<br />

[€/a]<br />

2% annual<br />

increase<br />

Cost<br />

saving<br />

per<br />

year<br />

[€/a]<br />

Total cost<br />

saving<br />

(summary)<br />

[€]<br />

1 38383.81 8633.81 1272.38 707.07 1979.45 3391.47 1412.02 1412.02<br />

2 39151.49 8806.49 1297.83 753.03 2050.86 3459.30 1408.44 2820.46<br />

3 39934.52 8982.62 1323.78 768.09 2091.87 3528.49 1436.61 4257.07<br />

4 40733.21 9162.27 1350.26 783.45 2133.71 3599.06 1465.34 5722.41<br />

5 41547.87 9345.51 1377.27 799.12 2176.39 3671.04 1494.65 7217.06<br />

6 42378.83 9532.42 1404.81 815.10 2219.91 3744.46 1524.54 8741.61<br />

7 43226.40 9723.07 1432.91 831.41 2264.31 3819.35 1555.03 10296.64<br />

8 44090.93 9917.53 1461.56 848.03 2309.60 3895.73 1586.13 11882.77<br />

9 44972.75 10115.88 1490.80 864.99 2355.79 3973.65 1617.86 13500.63<br />

10 45872.21 10318.20 1520.61 882.29 2402.91 4053.12 1650.21 15150.85<br />

11 46789.65 10524.57 1551.02 899.94 2450.96 4134.18 1683.22 16834.06<br />

12 47725.44 10735.06 1582.04 917.94 2499.98 4216.87 1716.88 18550.95<br />

13 48679.95 10949.76 1613.69 936.30 2549.98 4301.20 1751.22 20302.17<br />

14 49653.55 11168.75 1645.96 955.02 2600.98 4387.23 1786.24 22088.41<br />

15 50646.62 11392.13 1678.88 974.12 2653.00 4474.97 1821.97 23910.38<br />

85

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