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Large Volume Inorganic Chemicals - Ammonia ... - ammk-rks.net

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Chapter 8Waste water per tonne uream 3COD Urea-N NO 3 -N NH 3 -N N totalgRemarkReferenceNo waste waterdischargeConventional total recycle process. Process water remains inproduct urea solution for downstream glue production, wastewater from vacuum processes are used in a cooling towerBASF, Ludwigshafen[121, German UBA, 2001]0.46 50 100To biologicalwaste watertreatmentStamicarbon CO 2 stripping process. The volume includes 0.3tonne process water (loaded with 6 % NH 3 , 4 % CO 2 and 1 %urea) from the reaction, and additionally rinsing/cleaningwater and steamSKW Piesteritz[121, German UBA, 2001]0.65 48To process watertreatment plantSnamprogetti NH 3 stripping. The process water contains about0.08 kg NH 3 /tonne urea and 0.06 kg urea/tonne ureaYara, Brunsbüttel[121, German UBA, 2001]75 341 120 To process watertreatment plant3.7 – 5.2 51 – 102 6 – 8.4 After treatment95.7 96.4 x To biologicaltreatmentPart of the process water is used as cooling water, theremainder and the cooling water is forwarded to waste watertreatment. Levels include cooling and scrubbing waterLevels include cooling and scrubbing water.DSM Geleen[52, infoMil, 2001]Yara Sluiskil 5 + 6[52, infoMil, 2001]

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