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Paper Information

Journal:   HORMOZGAN MEDICAL JOURNAL   Fall 2002 , Volume 6 , Number 3; Page(s) 23 To 28.
 
Paper: 

OXYGEN CONSUMPTION RATES IN THE SANITARY SEWERAGE PIPELINES

 
 
Author(s):  DINARLOO K.*, NADAFI K., MESDAGHINIA A.
 
* FACULTY OF HEALTH, HORMOZGAN UNIVERSITY OF MEDICAL SCIENCES
 
Abstract: 

This research was performed in order to compare oxygen consumption rate along the sewerage.
To assess the existing conditions, Sahebgharnie main pipeline with the length of 300m and diameter of 300mm was investigated and dissolved oxygen concentration was measured in ten points of its length.
While concentration of dissolved oxygen in the first manhole was 2.73mg/l, its concentration at the last segment decreases to 1.8mg/l in the manhole. Oxygen consumption rate along the sewerage was calculated as much as 8.99mg/l.h.
The h/D (sewerage slope) ratio for the first and last spot of the sewerage was measured 4.5% and 29.7% respectively, expressing the fact that dissolved oxygen will decrease if h/D ratio increases. The amount of BOD5 was also measured 195 mg and temperature was 20.3.
Using this calculation for other systems, it will be possible to prevent biological corrosion sewers.

 
Keyword(s): BIOLOGICAL WASTE DISPOSAL, OXYGEN, SEWAGE, SANITARY SEWER
 
References: 
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