Systems Analysis of Zaragoza Urban Water - SWITCH - Managing ...
Systems Analysis of Zaragoza Urban Water - SWITCH - Managing ...
Systems Analysis of Zaragoza Urban Water - SWITCH - Managing ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>Systems</strong> <strong>Analysis</strong> <strong>of</strong> <strong>Zaragoza</strong> UWS<br />
Guillermo Penagos<br />
for 75% <strong>of</strong> the total load to the river. Once again “Almozara” and “Paper mills” loads<br />
are quite comparable. Nearly 60% <strong>of</strong> nitrogen is being removed from the sewage by<br />
the WWT system and ends up in the sludge (no data concerning denitrification were<br />
available).<br />
Since “Cartuja” plant is designed to remove phosphorus, the relative contribution <strong>of</strong><br />
this facility to the TP loads to the Ebro River is relatively low as compared with all<br />
other pollution loads that have been already mentioned and it is even comparable to<br />
those loads from the other two facilities. As consequence <strong>of</strong> TP removal at “Cartuja”<br />
plant 65% <strong>of</strong> this nutrient is disposed in a landfill for hazardous materials (see figure<br />
2) and only 3.5% is recycled to agriculture.<br />
39