Best Management Practices in Wastewater Treatment in Italian Country: the Territorial Approach of the Autonomous Province of Trento

Paolo Nardelli, Enrico Maria Battistoni, Anna Laura Eusebi , Paolo Battistoni



The paper deals with an innovative strategy and methodology to globally improve the wastewater treatment and management in a whole water basin district, where a large network of 73 treatment plants, mostly small and decentralized, are operating. The network of wastewater treatment plants (WWTPs) was analysed to outline the current state of the wastewater treatment and management. These detailed analyses were used by the competent authority to identify the critical aspects and assess the call for tender regarding the wastewater treatment and management. The call is focused on two main concepts: (1) scientific approach and technological innovation for trouble-shooting and WWTPs upgrading; (2) periodical verification and validation of the results achieved, according to protocols proposed by the tenderers. Therefore, the response of the tenderers was mainly based on the alternate cycles processes to improve the secondary effluent quality in terms of nitrogen and phosphorus content, reduce the waste activated sludge production and consumptions of electric energy. Additionally, locals adoption of waste sludge ozonization will contribute to achieve the global results in the whole water basin district.


Keywords: Territorial wastewater treatment and management, Large network of small WWTPs, Alternate cycles process