Poland – Purification plant equipment – Wykonanie robót budowlanych polegających na budowie budynku defosfatacji wraz z niezbędną infrastrukturą na terenie Wrocławskiej Oczyszczalni Ścieków

The subject of the procurement is the execution of construction works consisting of the construction of a defosfation building along with the necessary infrastructure at the Wrocław Wastewater Treatment Plant. 2. The subject of the procurement is the construction of a building for the installation of phosphorus recovery in the defosfation process, i.e. the treatment of effluents from the process of dewatering fermented sludge along with accompanying structures, at the Wrocław Wastewater Treatment Plant. 3. The subject of the contract must meet: a) the requirement to achieve phosphorus recovery >70% for effluents with a phosphorus concentration exceeding 95 gP/m3 and to meet the remaining requirements of Appendix No. 1 to ST-00 Final Acceptance and Process Guarantee Conditions for the Defosfation Installation, which will be confirmed by the positive completion of Test No. 1 - the acceptance test which will limit the phosphorus load in the sludge and translate into an environmental effect in the form of reducing the risk of eutrophication, b) the requirement to achieve phosphorus recovery in a wide range of phosphorus concentrations in effluents in accordance with Appendix No. 1 to ST-00 Final Acceptance and Process Guarantee Conditions for the Defosfation Installation which will be confirmed by the positive completion of Test No. 1 - the acceptance test which will limit the phosphorus load in the sludge and translate into an environmental effect in the form of reducing the risk of eutrophication, c) the requirement for energy efficiency by using motors with an efficiency class of at least IE4 for the electric drives of compressors and pumps, d) the requirement to use LED technology lighting with the use of presence and light intensity sensors and the ability to regulate the light flow, e) the requirement to regulate the rotational speed of electric drives using high-frequency converters, appropriately selected to the technical parameters of the powered motors and the technological requirements of the installation. 4. The individual elements of the investment consist of: a) Construction of a building for the phosphorus recovery installation - object Po, b) Construction of the foundation under the silo - object F1, c) Reconstruction of the compressor building and pump. on the power generating unit – object B10, B19, d) Reconstruction of the ventilation station building and heat center – object B11, e) Reconstruction of the socio-technical building – object B21-B24, f) Construction of installations and inter-object networks along with objects on the networks, g) Construction of a walkway. 5. The basic assumption of the installation is the removal and recovery of phosphorus from the effluent, which will result in the minimization of the additional load of pollutants entering with the effluent after the dewatering process to the biological blocks of the Wrocław Wastewater Treatment Plant. 6. The central element of the phosphorus recovery installation is the crystallisation reactor, to which the effluent rich in ammonium and phosphate ions from the sludge dewatering is pumped from below. 7. The throughput of the installation, calculated as the amount of effluent, after the process of dewatering the fermented sludge, which can be directed to it, is Qśrd - 1 160 m3/d. 8. The detailed requirements of the Purchaser regarding the subject of the procurement are contained in the Subject of the Procurement Description, constituting Appendix No. 1 to the Specification.