Reference Terms
from Wikipedia, the free encyclopedia
Activated sludge
Activated sludge is a process in sewage treatment in which air or oxygen is forced into sewage liquor to develop a biological floc which reduces the organic content of the sewage.
Note: The above text is excerpted from the Wikipedia article "Activated sludge", which has been released under the GNU Free Documentation License.
Related Stories
1
2
Earth & Climate News
April 29, 2024
Apr. 25, 2024 — How do birds fly in a coordinated and seemingly effortless fashion? Part of the answer lies in precise, and previously unknown, aerodynamic interactions, reports a team of mathematicians. Its ...
Apr. 18, 2024 — Land subsidence is overlooked as a hazard in cities, according to new research. Scientists used satellite data that accurately and consistently maps land movement across ...
Apr. 17, 2024 — Even if CO2 emissions were to be drastically cut down starting today, the world economy is already committed to an income reduction of 19% until 2050 due to climate change, a new study finds. These ...
Apr. 12, 2024 — Chimpanzees and bonobos are often thought to reflect two different sides of human nature -- the conflict-ready chimpanzee versus the peaceful bonobo -- but a new study shows that, within their own communities, male bonobos are more frequently ...
Latest Headlines
updated 12:56 pm ET
Apr. 29, 2024 — Researcher discovered that two species in the genus Angelica are pollinated primarily by hornets. This overturns the conventional belief that Angelica species are 'generalists,' meaning that there is ...
Apr. 29, 2024 — Europe's forests have already been severely affected by climate change. Thousands of hectares of trees have already died due to drought and bark beetles. Scientists have now investigated which trees ...
Apr. 25, 2024 — Researchers have published a comprehensive study on the invasion of lionfish in the Mediterranean Sea, highlighting a rapid spread and the potential ecological impacts. The research shows the ...
Apr. 29, 2024 — Medium-sized dogs have a higher risk of developing cancer than the very largest or smallest breeds, according to a new ...
Apr. 29, 2024 — Using aerial imagery data and LiDAR, a study remotely identified the hardest-hit areas of Southwest Florida's Estero Island in the aftermath of ...
Apr. 29, 2024 — Greening the way we eat needn't mean going vegetarian. A healthy, more realistic solution is to adopt a flexitarian diet where seafoods add umami to ...
Apr. 26, 2024 — Scientists have shed light on a new, transformative approach that could help resolve a dispute over the Nile river's water ...
Apr. 26, 2024 — Using environmental DNA analysis, an international team of researchers identified a collection of plants used in ceremonial rituals in the ancient Maya city of Yaxnohcah in Mexico. The plants, known ...
Apr. 26, 2024 — Researchers have for the first time recorded X-rays being produced at the beginning of upward positive lightning flashes; an observation that gives important insight into the origins of this rare -- ...
Apr. 26, 2024 — Landslides are one of the most destructive natural disasters on the planet, causing billions of dollars of damage and devastating loss of life every year. A global team of researchers has provided ...