A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Changes in Mixed Liquor and Organic Foulant Properties Affect Membrane Fouling for Non‐Nitrifying and Nitrifying Biological Conditions
A submerged membrane bioreactor treated settled municipal wastewater at a non‐nitrifying solids retention time (SRT) condition (2 days) and a nitrifying SRT condition (10 days), to determine the effect of nitrification on mixed liquor properties and membrane fouling. Membrane fouling rates were almost 10 times greater at the 2‐day SRT compared with the 10‐day SRT, and results showed increased concentrations of high‐molecular‐weight organic molecules at the 2‐day SRT. The Fourier transform infrared spectroscopy (FTIR) results of the fouled membrane from the 2‐day SRT exhibited strong peaks for carbohydrates, while the fouled membrane from the 10‐day SRT did not. This is consistent with the fact that, although the total carbohydrate soluble microbial product concentration was highest at the 10‐day SRT, the carbohydrate consisted of mostly low‐molecular‐weight (<1 kDa) molecules, and 97% of this carbohydrate passed through the membrane at the 10‐day SRT.
Changes in Mixed Liquor and Organic Foulant Properties Affect Membrane Fouling for Non‐Nitrifying and Nitrifying Biological Conditions
A submerged membrane bioreactor treated settled municipal wastewater at a non‐nitrifying solids retention time (SRT) condition (2 days) and a nitrifying SRT condition (10 days), to determine the effect of nitrification on mixed liquor properties and membrane fouling. Membrane fouling rates were almost 10 times greater at the 2‐day SRT compared with the 10‐day SRT, and results showed increased concentrations of high‐molecular‐weight organic molecules at the 2‐day SRT. The Fourier transform infrared spectroscopy (FTIR) results of the fouled membrane from the 2‐day SRT exhibited strong peaks for carbohydrates, while the fouled membrane from the 10‐day SRT did not. This is consistent with the fact that, although the total carbohydrate soluble microbial product concentration was highest at the 10‐day SRT, the carbohydrate consisted of mostly low‐molecular‐weight (<1 kDa) molecules, and 97% of this carbohydrate passed through the membrane at the 10‐day SRT.
Changes in Mixed Liquor and Organic Foulant Properties Affect Membrane Fouling for Non‐Nitrifying and Nitrifying Biological Conditions
Trussell, R. Shane (author) / Jang, Namjung (author) / Merlo, Rion P. (author) / Kim, In S. (author) / Hermanowicz, Slawomir W. (author) / Jenkins, David (author)
Water Environment Research ; 81 ; 255-264
2009-03-01
10 pages
Article (Journal)
Electronic Resource
English
Foulant–foulant Interaction of Combined Micro-particulate and Organic Fouling on a Ceramic Membrane
| Springer Verlag | 2018
Foulant–foulant Interaction of Combined Micro-particulate and Organic Fouling on a Ceramic Membrane
| Online Contents | 2018
Covering the nitrifying Biostyr cells
| Online Contents | 2006
Nitrifying Bacteria in Water Supplies
| Wiley | 1935