Articles
THE PROBLEM OF SEWAGE SLUDGE MANAGEMENT OF PSITTALIA’S ISLAND WASTEWATER TREATMENT PLANT, IN ATTICA
A quantity of 336 m37 d of dewatered sewage sludge will be produced during Phase I operation (1996) of P.I.W.T.P., having a 50% of solids content.
Towards advanced treatment of sewage sludge during Phase II (2026) operation, the rates of produced sludge are expected to be increased.
According to the Committee’s Preliminary Technical Report of the Ministry of Public Works, sludge is processed to be disposed at Ano Liosion’s landfill which has a limited operation and environmental problems.
Based on the detailed evaluation of existing alternative options such as landfilling, land application and reclamation, composting, solidification/ chemical fixation, incincration, building materials production and ocean disposal, which have been tested and/or implemented worldwide, composting and co-composting options are recommended to be used for P.I.W.T.P.’s sludge management plan as an effective environmental and macroeconomical approach.
The proposal of this option was based on beneficial reuse and resource recovering from the sludge and on environmental, economical and social acceptance.
In conclusion, it is pointed out the critical need of development of a comprehensive sludge management study of Psittalia’s Island Wastewater Treatment Plant in association with a refuse management plan, since there is no one available in Attica, at the present time.