Afstemmen Effluenteisen Rwzi Met Krw- Doelen Ontvangend Oppervlaktewater Fase 1 Modelmatige Aanpak

Afstemmen Effluenteisen Rwzi Met Krw- Doelen Ontvangend Oppervlaktewater Fase 1 Modelmatige Aanpak

AFSTEMMEN EFFLUENTEISEN RWZI MET KRW- DOELEN ONTVANGEND OPPERVLAKTEWATER FASE 1 MODELMATIGE AANPAK HOOGHEEMRAADSCHAP DE STICHTSE RIJNLANDEN 20 november 2014 078155777:A - Definitief C01041.000110.0100 Afstemmen effluenteisen RWZI met KRW-doelen ontvangend oppervlaktewater fase 1 modelmatige aanpak Inhoud 1 Samenvatting ........................................................................................................................................................ 4 2 Inleiding ................................................................................................................................................................ 8 2.1 Beschrijving van het project ..................................................................................................................... 8 2.2 Doel.............................................................................................................................................................. 9 2.3 Afbakening ................................................................................................................................................. 9 2.4 Leeswijzer ................................................................................................................................................... 9 3 Werkwijze ........................................................................................................................................................... 10 3.1 Werkwijze algemeen ............................................................................................................................... 10 3.2 Werkwijze met SOBEK-model ............................................................................................................... 11 3.2.1 Gebruiksklaar maken SOBEK-model ................................................................................ 11 3.2.2 Beperkingen en onzekerheden van het SOBEK-model ................................................... 11 3.2.3 Werkwijze fractiesommen .................................................................................................. 11 3.2.4 Werkwijze verblijftijdanalyse ............................................................................................. 14 3.2.5 Werkwijze conservatieve stoffenbalansen ........................................................................ 14 3.2.6 Werkwijze terugrekenen concentratie effluent ................................................................ 15 4 Inventarisatie ...................................................................................................................................................... 17 4.1 Globale beschrijving hoofdwatersysteem HDSR................................................................................. 17 4.1.1 Waterafvoer .......................................................................................................................... 17 4.1.2 Wateraanvoer ....................................................................................................................... 18 4.1.3 Waterlichamen ..................................................................................................................... 20 4.1.4 RWZI’s ................................................................................................................................... 20 4.2 Waterkwantiteit ....................................................................................................................................... 22 4.3 Waterkwaliteit .......................................................................................................................................... 23 5 Resultaten berekeningen .................................................................................................................................. 26 5.1 Resultaten per waterlichaam .................................................................................................................. 26 5.2 Biltse Grift ................................................................................................................................................. 27 5.2.1 Resultaten waterkwantiteit ................................................................................................. 27 5.2.2 Resultaten waterkwaliteit ................................................................................................... 28 5.3 Binnenstad Utrecht .................................................................................................................................. 33 5.3.1 Resultaten waterkwantiteit ................................................................................................. 33 5.3.2 Resultaten waterkwaliteit ................................................................................................... 34 5.4 Gekanaliseerde Hollandsche IJssel ........................................................................................................ 37 5.4.1 Resultaten waterkwantiteit ................................................................................................. 37 5.4.2 Resultaten waterkwaliteit ................................................................................................... 38 5.5 Grecht ........................................................................................................................................................ 46 5.5.1 Resultaten waterkwantiteit ................................................................................................. 46 5.5.2 Resultaten waterkwaliteit ................................................................................................... 46 5.6 Kromme Rijn ............................................................................................................................................ 50 5.6.1 Resultaten waterkwantiteit ................................................................................................. 50 5.6.2 Resultaten waterkwaliteit ................................................................................................... 50 078155777:A - Definitief ARCADIS 1 Afstemmen effluenteisen RWZI met KRW-doelen ontvangend oppervlaktewater fase 1 modelmatige aanpak 5.7 Langbroekerwetering .............................................................................................................................. 55 5.7.1 Resultaten waterkwantiteit ................................................................................................. 55 5.7.2 Resultaten waterkwaliteit ................................................................................................... 55 5.8 Lange Linschoten ..................................................................................................................................... 59 5.8.1 Resultaten waterkwantiteit ................................................................................................. 59 5.8.2 Resultaten waterkwaliteit ................................................................................................... 59 5.9 Leidsche Rijn ............................................................................................................................................ 63 5.9.1 Resultaten waterkwantiteit ................................................................................................. 63 5.9.2 Resultaten waterkwaliteit ................................................................................................... 63 5.10 Merwedekanaal ........................................................................................................................................ 69 5.10.1 Resultaten waterkwantiteit ................................................................................................. 69 5.10.2 Resultaten waterkwaliteit ................................................................................................... 70 5.11 Montfoortse Vaart .................................................................................................................................... 74 5.11.1 Resultaten waterkwantiteit ................................................................................................. 74 5.11.2 Resultaten waterkwaliteit ................................................................................................... 74 5.12 Oude Rijn .................................................................................................................................................. 77 5.12.1 Resultaten waterkwantiteit ................................................................................................. 77 5.12.2 Resultaten waterkwaliteit ................................................................................................... 77 5.13 Wierickes ................................................................................................................................................... 83 5.13.1 Resultaten waterkwantiteit ................................................................................................. 83 5.13.2 Resultaten waterkwaliteit ................................................................................................... 83 5.14 Totaal ......................................................................................................................................................... 87 6 Conclusies en aanbevelingen .........................................................................................................................

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