scholarly journals Changes on Removal Effects of Organic Pollutants in River Water by Biological Activated Carbon in Long Term.

1997 ◽  
Vol 20 (8) ◽  
pp. 526-531 ◽  
Author(s):  
Takashi KAMEYA ◽  
Kiyoshi MOMONOI ◽  
Kohei URANO ◽  
Shinichiro OHGAKI
Keyword(s):  
Activated Carbon ◽  
River Water ◽  
Organic Pollutants ◽  
Biological Activated Carbon

The performance of an ozonation-biological activated carbon process under long term operation

1998 ◽  
Vol 38 (6) ◽  
pp. 163-169 ◽  
Author(s):  
Wataru Nishijima ◽  
Woo Hang Kim ◽  
Eiji Shoto ◽  
Mitsumasa Okada
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Supply ◽  
Water Temperature ◽  
Seasonal Changes ◽  
Pilot Scale ◽  
Raw Water ◽  
Biological Activated Carbon ◽  
Term Operation

The objective of this study is to evaluate removal of DOC and THMFP during long term operation of an ozonation-biological activated carbon (BAC) process. A pilot scale plant with raw water in an eutrophic reservoir for drinking water supply was operated for 910 days. High DOC and THMFP removal were maintained at 36% and 57%, respectively, in the ozonation-BAC process even after saturation of BAC by DOC. DOC and THMFP removal by ozonation were only 8% and 24%, respectively. High DOC and THMFP removal after saturation was due to the increase in biodegradable DOC by ozonation from 7% to 32% and the subsequent biodegradation by bacteria attached on BAC. Although water temperature changed in the range from 5 to 30°C, seasonal changes in DOC and THMFP removal were not observed in the ozonation-BAC process.

Performance on Organic Pollution Removal of O3-IBAC in Advanced Drinking Water Treatment

2010 ◽  
Vol 113-116 ◽  
pp. 784-787
Author(s):  
Chang Long Pang ◽  
Fang Ma ◽  
Li Wang ◽  
Li Wei
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Organic Pollutants ◽  
High Performance ◽  
Conventional Treatment ◽  
New Technologies ◽  
Drinking Water Treatment ◽  
Organic Pollution ◽  
Biological Activated Carbon

Conventional drinking water treatment has low removal efficiencies for micro-organic pollutants, which made it important to study new technologies of water treatment. The purification efficiency and mechanisms of micro polluted drinking water by Ozone/Immobilized Biological Activated Carbon (O3/IBAC) was investigated. The GAC (Granular Activated Carbon) has become IBAC by using the twelve strains of efficient engineering bacterium. A GC/MS analysis revealed that conventional treatment processes could not remove micro-organic pollutants efficiently. The O3-IBAC has a high performance of the organic pollutants removal. 16 kinds of the organic pollutants have been removed completely after the process of IBAC, and the variety of the typical toxic pollutants has decreased from 6 to 2. The amount of the total organic pollutants of the IBAC effluent has decreased 89.7% while that in the conventional treatment effluent was less than 40%. The safety and health of drinking water can be ensured by the O3-IBAC process.

Purification of polluted river water by ultrafiltration-ozonization-biological activated carbon filtration

1997 ◽  
Vol 35 (7) ◽  
pp. 179-186 ◽  
Author(s):  
Y.-K. Park ◽  
C.-H. Lee ◽  
S.-H. Lee ◽  
N.-Y. Jang
Keyword(s):  
Activated Carbon ◽  
River Water ◽  
Ammonia Nitrogen ◽  
Early Spring ◽  
Nakdong River ◽  
Biological Activated Carbon ◽  
Activated Carbon Filter ◽  
Biological Activated Carbon Filter ◽  
Carbon Filtration ◽  
Carbon Filter

The main Nakdong river water mixed with polluted Kumho river was used as raw water in this research. The removal efficiencies of TOC and UV254 nm absorbance in the ultrafiltration process were both approximately 15% higher than those in the coagulation/rapid sand filtration process. In the biological activated carbon filter, the ammonia nitrogen removal efficiency goes up to over 90% after 35 days of operation in the early spring at empty bed contact time (EBCT) of 25 min. At EBCT of 25 min, the removal of TOC and UV254 nm absorbance were higher by about 5% and 10%, respectively, than at EBCT of 10 min. By the combination of ozonization to ultrafiltration-biological activated carbon process, the AOX and THM formation potential were effectively reduced.

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