The sludge layer in a primary, facultative wastewater stabilization pond in Texcoco, Mexico was studied. Five sludge cores were taken in the pond, near the entrance, middle, exit, and at the midpoint about 5 m from each side. Each core was stratified into four subsamples and analyzed. Temperature, pH, ORP, and %VS decreased with depth (age) in the sludge layer, whereas ammonia and TS concentrations increased. The concentrations of fecal coliforms and viable helminth eggs also decreased with depth in the sludge layer, but significant concentrations of both organisms were still present in the oldest sludge, which is estimated to be over seven years old (average). From a sludge depth survey it was found that the majority of the sludge accumulated near the inlet of the pond. The average net sludge accumulation rate was estimated to be 24 mm/yr.
Skip Nav Destination
Article navigation
Research Article|
November 01 2000
Sludge accumulation, properties and degradation in a waste stabilization pond in Mexico
K. L. Nelson;
K. L. Nelson
*Dept. of Civil and Environmental Engineering, UC Davis, Davis CA95616, USA
Search for other works by this author on:
B. C. Jiménez
B. C. Jiménez
**Engineering Institute, Treatment and Reuse Group, National Autonomous University of Mexico, CD Universitaria, A.P. 70-472, Coyoacan, Mexico DF., 04510
Search for other works by this author on:
Water Sci Technol (2000) 42 (10-11): 231–236.
Citation
K. L. Nelson, B. C. Jiménez; Sludge accumulation, properties and degradation in a waste stabilization pond in Mexico. Water Sci Technol 1 November 2000; 42 (10-11): 231–236. doi: https://doi.org/10.2166/wst.2000.0650
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
Impact Factor 2.430
CiteScore 3.4 • Q2
13 days submission to first
decision
1,439,880 downloads in 2021
26
Views
4
Crossref