Spectroscopic and elemental investigation of microbial decomposition of aquatic fulvic acid in biological process of drinking water treatment

1996 ◽  
Vol 7 (4) ◽  
pp. 287-295 ◽  
Author(s):  
Hang-Sik Shin ◽  
Kyeong-Ho Lim
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Fulvic Acid ◽  
Biological Process ◽  
Drinking Water Treatment ◽  
Microbial Decomposition

scholarly journals Fouling analysis of polysulfone ultrafiltration membranes used for drinking water treatment

2011 ◽  
Vol 11 (6) ◽  
pp. 668-674 ◽  
Author(s):  
B. Q. Zhao ◽  
C. P. Huang ◽  
S. Y. Chen ◽  
D. S. Wang ◽  
T. Li ◽  
...  
Keyword(s):  
Drinking Water ◽  
Organic Matter ◽  
Water Treatment ◽  
Fulvic Acid ◽  
Humic Substances ◽  
Natural Organic Matter ◽  
Drinking Water Treatment ◽  
Ultrafiltration Membranes ◽  
Fluorescence Excitation ◽  
Hydrophobic Fraction

Natural organic matter (NOM) plays a significant role in the fouling of ultrafiltration membranes in drinking water treatment processes. For a better understanding of the interaction between fractional components of NOM and polysulfone (PS) ultrafiltration membranes used for drinking water treatment, fouling and especially the physically irreversible fouling of natural organic matter were investigated. Resin fractionation, fluorescence excitation–emission matrix (EEM) spectroscopy, fourier transform infrared spectroscopy (FTIR), contact angle and a scanning electron microscope (SEM) were employed to identify the potential foulants. The results showed that humic acid and fulvic acid of small size were likely to permeate the membrane, while the hydrophobic fraction of humic and fulvic acid and aromatic proteins tended to be rejected and retained. Organic compounds such as proteins, humic substances, and polysaccharide-like materials, were all detected in the fouling layer. The physically irreversible fouling of the PS membrane seemed to be mainly attributed to the hydrophobic fraction of humic substances.

Biological drinking water treatment for nitrate and pesticide (endosulfan) elimination

2006 ◽  
Vol 6 (3) ◽  
pp. 123-127 ◽  
Author(s):  
A. Boley ◽  
B. Unger ◽  
W.-R. Müller ◽  
B. Kuch ◽  
A. Deger
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Biological Process ◽  
Drinking Water Treatment ◽  
Pesticide Removal

This study shows how a combination of denitrification and pesticide removal is possible. A reactor with granulated poly-ε-caprolactone (PCL) was operated in an upflow-mode with nitrate and α-endosulfan containing water. The polymer was used as a substrate for denitrification and simultaneously as sorbent for the pesticide α-endosulfan. The experiments showed that nitrate was removed at high denitrification rates and without accumulation of nitrite. α-endosulfan, which was added to the influent, was not found in the effluent. Doubts that the pesticide could interfere with the biological process were not justified here.

ASSESSMENT OF ELECTROCOAGULATION PROCESS FOR DRINKING WATER TREATMENT

2015 ◽  
Vol 14 (6) ◽  
pp. 1347-1354 ◽  
Author(s):  
Florica Manea ◽  
Anamaria Baciu ◽  
Aniela Pop ◽  
Katalin Bodor ◽  
Ilie Vlaicu
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Electrocoagulation Process

Drinking Water Surveillance Program in the St. Clair-Detroit River Area 1985/86

1986 ◽  
Vol 21 (3) ◽  
pp. 447-459 ◽  
Author(s):  
K.J. Roberts ◽  
R.B. Hunsinger ◽  
A.H. Vajdic
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Surveillance Program ◽  
Sampling Protocol ◽  
Detroit River ◽  
Water Treatment Plants

Abstract The Drinking Water Surveillance Program (DWSP), developed by the Ontario Ministry of the Environment, is an assessment project based on standardized analytical and sampling protocol. This program was recently instituted in response to a series of contaminant occurrences in the St. Clair-Detroit River area of Southwestern Ontario. This paper outlines the details and goals of the program and provides information concerning micro-contaminants in drinking water at seven drinking water treatment plants in Southwestern Ontario.

Cost and Benefits of Drinking Water Treatment

1984 ◽  
Vol 14 (1) ◽  
pp. 1-30 ◽  
Author(s):  
Robert M. Clark ◽  
James A. Goodrich ◽  
John C. Ireland
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment
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