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Facultative lagoon (polishing pond) providing tertiary treatment after a constructed wetland in Hamburg-Allermöhe, Germany. Overflow from the facultative lagoon may be routed through one or more polishing ponds supporting lower populations of anaerobic micro-organisms and a higher proportion of aerobic organisms adapted to survival in lower concentrations of organic material.
Raw sewage discharges primarily during floods, and PCB contaminants from the Washington Navy Yard. [ 132 ] [ 133 ] [ 133 ] Public health threat because of fecal coliform bacteria and other pathogens ; it also impairs water quality and can create hypoxic conditions that lead to large fish kills and sickness of people who get water in their mouth.
Retention ponds such as this one in Dunfermline, Scotland, are considered components of a sustainable drainage system. Sustainable drainage systems (also known as SuDS, [1] SUDS, [2] [3] or sustainable urban drainage systems [4]) are a collection of water management practices that aim to align modern drainage systems with natural water processes and are part of a larger green infrastructure ...
BOSTON — As sewage overflows become more frequent in Massachusetts, advocates and lawmakers are pushing to reduce the number of combined sewer systems to avoid run-off sewage polluting bodies of ...
These 15 koi pond ideas will inspire you to transform your outdoor space into a serene outdoor oasis. They prove that koi ponds can work in spaces of all sizes.
That's roughly the equivalent of 2 ½ backyard swimming pools. ... This wastewater overflow comes almost two months after DEP issued a second fine to the city for major sewage spills in 2023.