Master plan of salonica sewerage network

Salonica is the second largest city in Greece with a population of over 1,100,000 people. The sewer system is mainly combined. The Waste Water Treatment Plant has started operating with full capacity in September 2000. The main collector sewer with a total length of 18 Km was constructed 10 years ago. The main objectives of the Master plan included the assessment of the future needs of the fast growing city and selection of optimum measures of protection of the coastal zone, mainly through reduction of CSO (Combined Sewer Overflows) and some reconfiguration of coastline sewer – pumping station arrangements. Also, improvements of inflow balancing at the main WWTP were studied (alternative configurations of retention tanks and pumps) and a filter arrangement for processing of stored storm water was designed. A study for the management of sludge produced at the Salonica WWTP was carried out.
The main objectives of the Master plan included the assessment of the future needs of the fast growing city and selection of optimum measures of protection of the coastal zone, mainly through reduction of CSO (Combined Sewer Overflows) and some reconfiguration of coastline sewer – pumping station arrangements. Also, improvements of inflow balancing at the main WWTP were studied (alternative configurations of retention tanks and pumps) as well as the management of the sludge produced.