water intake of a biological slow sand filter, Germany

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Size: 5315px × 3543px
Location: Deutschland
Photo credit: © blickwinkel/G. Czepluch / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: biological, clean, cleaning, cleans, environmental, europe, european, filter, filters, flowing, flows, format, german, germany, horizontal, intake, plant, protection, purgation, purge, purges, purging, purification, sand, sewage, slow, streaming, streams, technology, treatment, waste, wastewater, water