Hundremeters fatberg blokerer Londons kloak

En fatberg på omkring hundrede meter er fundet i kloakken under Londons Whitechapel-distrikt, der delvist blokerer rørene. Ifølge BBC kan fjernelse tage uger. Eksperter advarer om konsekvenserne af at smide fedt og klude i afløbet.

Oprindelsen af fatberget i Whitechapel fremhæver risiciene ved uforsigtig bortskaffelse i kloakker. Klumpen af herdet fedt, der siver fra afløb, kombineres med hygiejneklude, tamponger og madrester for at danne et voksende problem. En BBC-ekspert siger: »Hvad der sker, når fedt, olier og våde klude ender i afløbet – de forsvinder ikke, men ophobes og forårsager alvorlig skade.«

Dette fatberg er ikke det største i distriktets historie. I 2017 fjernede arbejdere i Whitechapel en blok på over 250 meter af gammelt fedt, hvilket tog ni uger og var kendt som »Whitechapels monster.« Sådanne formationer hærder i det kolde kloaksystem og vokser til monstrede størrelser.

I Tyskland er sammenlignelige ekstreme tilfælde sjældne, men forsyningsselskaber rapporterer stigende tilstopninger fra fedt og madrester, især juleaften når familier tilbereder overdådige måltider. Flydende fedt skal hældes i en tæt beholder som en PET-flaske og smides i husholdningsaffaldet eller på indsamlingspunkter afhængigt af regionen – en oversigt findes f.eks. for Bayern. Faste rester pakkes i køkkenrulle og smides i affaldet, madrester går i bioaffaldet. Store mængder flydende fedt hører ikke derhjemme. I branche for udenfor-hjemme-brug er fedtadskillere påkrævet for at beskytte kloakker og renseanlæg.

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