"Wisdom begins in wonder" – Socrates
Category: Earth/Climate science
Nitrates
08/08/24
“What are nitrates?”
Materials are made up of all sorts of chemicals. Plants and animals require molecules made up of nitrogen and oxygen called nitrates to survive. Nitrates may be naturally occurring in foods or artificially added (such as in fertilizers).
Why Heat Pumps Don’t Work Well in Cold Environments
08/06/24
“Why don’t heat pumps work well in cold environments?”
Heat pumps depend on using a working fluid to transfer heat from the outside environment to the inside. The working fluid becomes much less efficient when the outdoor temperature hits 5 degrees Celsius. This makes it much more difficult to heat your home effectively. This is Why Heat Pumps Don’t Work Well in Cold Environments.
Image credit: i0.wp.com/ctnewsjunkie.com
Why Sludge Fertilizer May Contain PFAS
08/02/24
“Why may sludge fertilizer contain PFAS?”
Sewer Sludge is often reused into fertilizer. However, it may contain harmful PFAS chemicals. This puts people who handle the fertilizer or consumed products grown with it at risk. This is Why Sludge Fertilizer May Contain PFAS.
Why Sewage Sludge is Recycled Into Fertilizer
08/01/24
“Why is sewage sludge recycled into fertilizer?”
Sewage sludge can be a pain to deal with. It’s filthy, it’s ugly, and it’s hard to deal with. However, it also contains solid organic material that’s digestible by plants. This makes it potent as a fertilizer product. This is Why Sewage Sludge is Recycled Into Fertilizer.
Catchment Areas
07/31/24
“What is the area of land that collects water after rain?”
Rain brings water down onto the ground. Usually, the water will merge onto a single area that’s bounded by areas of higher elevation. These Catchment Areas are important for studying how floods can occur and what interventions to take.
Secondary Sludge
07/30/24
“What is the sludge resulting from secondary treatment?”
Sewwe sludge is formed during wastewater treatment processes. Secondary Sludge comes from the secondary biological treatment. Primary sludge is composed of both organic and inorganic material while secondary sludge is mostly organic.
Image credit https://www.geo.fu-berlin.de/
Primary Sludge
07/29/24
“What is the sludge that comes out from primary processes?”
Wastewater treatment processes create sewer sludge. The sludge that comes from the first treatment systems (such as sedimentation and chemical precipitation) is called Primary Sludge.
Image credit https://upload.wikimedia.org/
Sewer Sludge
07/28/24
“What is that sludgy material that accumulates during wastewater treatment?”
Wastewater treatment plants separate pollutants from water. Suspended solids can accumulate and coalesce together during this process to become Sludge. Sludge hampers wastewater treatment and can contain pollutants.
Image credit
Nitrogen Water Pollution Remediation
07/27/24
“Why is it bad for water to have too much nitrogen?”
Nitrogen is one of the key ingredients for plant and animal life. However, algae can grow excessively when there’s too much nitrogen in a body of water. This Algae will then suck up the oxygen present in water, block sunlight, and even release toxins. This leads to mass-depth in the bodies of water. Nitrogen Water Pollution is serious and needs to be considered in industrialized developments.
Image credit: images.newscientist.com.
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