Rahmenvereinbarung Lieferung polymere Flockmittel - ZKA Chemnitz

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For the wastewater treatment plant Chemnitz-Heinersdorf, it is necessary to offer the delivery of the liquid polymer flocculant for the mechanical thickening of excess sludge. The Chemnitz wastewater treatment plant is a single-stage activated sludge plant with upstream denitrification and is designed for 400,000 p.e. The wastewater treatment plant is the only and central wastewater treatment plant for Chemnitz and the surrounding municipalities. The polymer flocculant must be supplied as a liquid product in IBC containers. For preparing the working solution, a mixing station is used. The concentrate is prepared in the mixing station in batch operation in two round containers equipped with agitators. The annual requirement for polymer flocculant is in the range of approx. 18 Mg/a. The sewage sludge is currently still partly used for agricultural recovery. Therefore, the use of polymer flocculants must not be associated with any deterioration in quality in the sense of the Sewage Sludge Ordinance or fertiliser law that would restrict or make agricultural recovery impossible. Specification for continuous operation: Activated sludge age: 11 - 30 days (2025) Solids content of…

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