![](http://www.alamy.com/thumbs/6/67D3BF21-A8D8-46D6-83BD-690E31B81092/BA17WT.jpg)
Activated sludge secondary sewage treatment system.
Secondary treatment involves the removal of organic material by bacterial decomposition This is an activated sludge secondary treatment system at a sewage treatment plant in West Caldwell NJ
Size: 5110px × 3421px
Location: West Caldwell, NJ
Photo credit: © Martin Shields / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: activated, aeration, aerobic, decomposition, facility, integrated, management, plant, process, secondary, sewage, sludge, tank, treatment, waste, wastewater, water, works