Romania – Construction Works for Wastewater Treatment Plants – CL3 - "Expansion and Modernization of Wastewater Treatment Plants in Arges County"_Reissued_2

CL3 "Expansion and Modernization of Wastewater Treatment Plants in Arges County": This contract involves the following works: Expansion and modernization of the wastewater treatment plant (WWTP) in Costesti city, including: - Construction of a new wastewater pumping station - Installation of a coarse screening compartment, a grit separator, and a grease separator - Modernization of the primary clarifier - Expansion of the biological reactor pumping station - Installation of necessary sensors and a new basin for the biological reactor - Chemical phosphorus removal with 1+1 dosing pumps equipped with frequency converters and a ferric chloride tank - Expansion of the blower station for the biological reactor - Installation of a UV disinfection system - Installation of a primary sludge pumping station with solid content measurement sensors and sludge thickness measurement sensors - Expansion of the blower station for primary sludge stabilization - Installation of a pumping station for excess and recirculated sludge with an electromagnetic flow meter - Construction of a buffer basin for excess sludge with a submersible mixer - Mechanical concentration of excess sludge with an automatic preparation and dosing unit for polyelectrolyte - Mechanical dewatering of sludge with an automatic preparation and dosing unit for polyelectrolyte. Expansion and modernization of the WWTP in Stolnici commune, including: - Incoming pumping station - Compact screening - Equalization basin - Chemical phosphorus removal - Sequential batch reactor basins - Blower station - Measurement of effluent flow and sampling - Buffer basin for excess sludge - Sludge dewatering - Area for sludge container placement - Storage of dewatered sludge - Supernatant pumping station - Service water pumping station. New WWTP in Albota commune, Cerbu village, including: - Incoming pumping station - Compact screening - Equalization basin - Phosphorus removal - Biological reactor - Blower station - Secondary clarifier - Measurement of effluent flow and sampling - Discharge point - Pumping station for activated sludge recirculation and excess - Buffer basin for excess sludge - Sludge dewatering - Area for sludge container placement - Sludge storage - Supernatant pumping station - Service water pumping station. Suppliers can request clarifications up to 25 days before the bid submission deadline. The contracting entity will respond clearly and completely to all clarification requests as follows: - 11 days before the bid submission deadline for clarification requests submitted 25 days before the deadline. Any reference in this documentation (including this specification) indicating a specific origin, source, production, special process, trademark, patent, and/or manufacturing license, standard, authorization/certification/attestation, service, or requirement will be interpreted as being accompanied by the mention "or equivalent."