OXYGEN SAG CURVE EBOOK DOWNLOAD!
Oxygen sag or the oxygen sag curve refers to the reduction in dissolved oxygen plotted over a distance along a water body from a point at which sewage or other pollutants have been discharged. Fish absent, sludge, worms,. Recovery. Zone. Trash Fish, leeches, isopods. Clean Zone. Normal O2. Trout, perch, macro invert. DO. BOD. Oxygen Sag Curve. oxygen sag curve The curve obtained when the concentration of dissolved oxygen in a river into which sewage or some other pollutant has been discharged is plotted against the distance downstream from the sewage outlet (see graph). Samples of water are taken at areas upstream and downstream from the sewage outlet.
|Published:||19 November 2015|
|PDF File Size:||10.42 Mb|
|ePub File Size:||38.85 Mb|
Therefore, water bodies situated in temperate regions have higher DO concentration than water bodies situated in tropical regions Henry and Heinke, At certain temperatures, the water cannot absorb oxygen beyond a certain level. The maximum DO level that a river can attain at a certain temperature is known as the saturated DO.
This ranges from The current study takes a look at the pollution and auto purification processes of River Atuwara which is one oxygen sag curve the most important rivers in Ota, Ogun State, Nigeria.
Solved: What is an oxygen sag curve? What changes in a river ca |
Due to multiple human activities on River Atuwara, both point and non-point pollutions have been affecting the water quality. Oxygen sag curve objective of this study therefore is to analyze the self-purification dynamics of a particular segment of interest on the river.
The segment of importance on River Atuwara that was selected for the study is a 1. This segment was identified and selected because of the numerous and conflicting water use activities taking place oxygen sag curve.
These activities include industrial oxygen sag curve disposal, sand quarrying for construction purposes, religious activities such as baptism and animal sacrifices. Furthermore, wood loggers work around the river and use it to transport their produce.
Other rivers such as River Balogun and another unidentified river form confluences with river Atuwara.
These rivers impact on River Atuwara by importing unknown wastes from unidentified sources into river Atuwara or by serving as dilutants of the high concentration of wastes in River Atuwara. Furthermore, residents of Iju town use the river water as a source of domestic oxygen sag curve supply in its untreated state Fig.
They also visit the river for recreation purposes such as swimming and animal hunting.
Oxygen sag curve |
The Streeter-Phelps equation is: The differential equation derived herein is based on the same principles as that of Streeter-Phelps. A study of the pollution and natural purification of the Ohio River. Factors concerned in the phenomena oxygen sag curve oxidation and reaeration.
B Patel Engineering College. O and actual D.
At this stage, when the effluent with initial BOD load Lo, is discharged in to stream, the DO oxygen sag curve of the stream starts depleting and the oxygen deficit D increases.