Aerial view of circular tanks contrast against the green landscape under a sky streaked with white clouds, Hoddesdon, United Kingdom.
Keywords
up high,
aerial,
drone,
engineering,
environmental protection,
filtration,
infrastructure,
liquid,
process,
public health,
purification,
sanitation,
sewage,
sewage treatment plant,
technology,
treatment,
britain,
view,
waste,
water,
water treatment