PacificGoldenPlover wrote:Which coral species is known as the "lab rat" of the reefs, and why?
[i]Stylophora pistillata[/i], because they have a wide range of different shapes/sizes/types/morphologies, and they also have a very diverse range (geographically)...?
Re: Water Quality B/C ID/Question Marathon
Posted: March 25th, 2014, 9:38 pm
by PacificGoldenPlover
No.
Re: Water Quality B/C ID/Question Marathon
Posted: March 26th, 2014, 7:07 pm
by cupcakegirl
Porites lobata because it is found worldwide, can be shipped and survive, is vigorous to survive an environmental issue, and is representative of scleractinians.
Re: Water Quality B/C ID/Question Marathon
Posted: March 26th, 2014, 7:58 pm
by ptkid
None, no species of coral would be representative. I read this somewhere on CORIS
Re: Water Quality B/C ID/Question Marathon
Posted: March 29th, 2014, 6:02 pm
by PacificGoldenPlover
Incorrect. The genus name is Montastraea
Re: Water Quality B/C ID/Question Marathon
Posted: April 8th, 2014, 8:33 am
by Trackest
Here is an easy one: Describe the three main steps of sewage treatment (primary, secondary, and tertiary), and be sure to include how BOD relates to the secondary step.
Re: Water Quality B/C ID/Question Marathon
Posted: April 14th, 2014, 5:55 am
by HELLOIMREECE
Primary is filtration, Secondary is flocculation, and tertiary is coagulation. BOD is removed from the water during flocculation.
Re: Water Quality B/C ID/Question Marathon
Posted: April 16th, 2014, 3:58 pm
by Trackest
HELLOIMREECE wrote:
Primary is filtration, Secondary is flocculation, and tertiary is coagulation. BOD is removed from the water during flocculation.
Sorry, that is incorrect. Anyone else care to try?
Re: Water Quality B/C ID/Question Marathon
Posted: April 17th, 2014, 9:49 pm
by Watergirl
[hide]I'm not sure...Primary treatment is the physical removal of the treatment. It consists of coagulation,flocculation, and sedimentation. Coagulation adds chemicals such as lime and alum, which makes the particles in the water clump together. Flocculation is the water circulation that helps the particles in the water clump together even more, which results in big flocs. Sedimentation is the phase where the water "settles" in tanks called "primary clarifiers or primary settling tanks." The heavy clumps of floc would sink to the bottom and would be scraped off. Secondary treatment is the biological removal of the treatment. Bacteria or microbes would be added to the wastewater to break down the matter in it. In the tanks, they would constantly increase the amount of oxygen to increase the BOD of these bacteria. BOD is the biochemical oxygen demand. Some of the matter would be removed and reused to encourage decomposition in wastewater later on... The teritary treatment is the chemical removal of the treatment. They would add certain chemicals to moderate the levels of phosphate and nitrates before sending the water for storage or releasing it back to the environment.[/hide]
Re: Water Quality B/C ID/Question Marathon
Posted: April 18th, 2014, 7:57 am
by Trackest
Watergirl wrote:[hide]I'm not sure...Primary treatment is the physical removal of the treatment. It consists of coagulation,flocculation, and sedimentation. Coagulation adds chemicals such as lime and alum, which makes the particles in the water clump together. Flocculation is the water circulation that helps the particles in the water clump together even more, which results in big flocs. Sedimentation is the phase where the water "settles" in tanks called "primary clarifiers or primary settling tanks." The heavy clumps of floc would sink to the bottom and would be scraped off. Secondary treatment is the biological removal of the treatment. Bacteria or microbes would be added to the wastewater to break down the matter in it. In the tanks, they would constantly increase the amount of oxygen to increase the BOD of these bacteria. BOD is the biochemical oxygen demand. Some of the matter would be removed and reused to encourage decomposition in wastewater later on... The teritary treatment is the chemical removal of the treatment. They would add certain chemicals to moderate the levels of phosphate and nitrates before sending the water for storage or releasing it back to the environment.[/hide]