Riihimäen Veden puhdistamolietteen jatkokäsittely-, loppusijoitus- ja kuljetuspalvelu

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Riihimäen vesihuoltoliikelaitos (hereinafter referred to as “Contracting Unit” or “Customer”) requests tenders for the further treatment and final disposal service for sewage sludge as well as transport service for further treatment in accordance with this tender request and its appendices. Transport, handling and final disposal of mechanically dewatered digested sludge generated at the wastewater treatment plant in Riihimäki. The dry matter content of the sludge has been 25–30% and the amount of dewatered sludge is approx. 3,000 tonnes per year. The dry matter content and sludge quantities are not binding. The concentrations of harmful metals in the sludge are low and fall below the maximum concentrations set out in the Ministry of Agriculture and Forestry decree on fertiliser products (No 24/11). The concentrations for the years 2020–2026 are presented in Appendix 2. This is a project exceeding the EU threshold value, to which the procurement act for special sectors applies. In this procurement, the basis for overall economic advantage is the lowest price. The contract period is 01.01.2027–31.12.2028 and the Contract includes the possibility of one (1) option for two (2)…

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