Aktivkohlewechsel im Bereich Sickerwasserbehandlung

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Supply of 200,000 kg of reactivated activated carbon as an operating resource for the landfill leachate treatment plant. The plant is designed hydraulically for 500 m³/d and with regard to the loads for 389 m³/d. The average value of the plant influent over the last three years is 270 m³/d at 1777 mg/L COD, composed of: Landfill leachate: 170 m³/d Condensate from the gas stations: 20 m³/d Concentrate from the groundwater treatment plant (NF + UO): 80 m³/d The wastewater stream after ultrafiltration (before activated carbon adsorption) shows the following values: COD: Maximum value: 1076 mg/L, average value: 679 mg/L AOX: Maximum value: 1.9 mg/L, average value: 0.82 mg/L Pursuant to the municipal statutes and permit-related provisions of Stadtentwässerung Hannover, the following effluent limit values must be met: COD: 400 mg/L AOX: 0.5 mg/L The delivery is carried out using a silo vehicle. A transfer container will not be provided. Connections are to be adapted to the specifications of the contracting authority: Treated water connection: Storz B coupling For the adsorber inlet and outlet: one Storz A coupling each Distance vehicle–adsorbers: approx. 35 m The activated carbon must…

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