Study on performance and mechanism of enhanced low-concentration ammonia nitrogen removal from low-temperature wastewater by iron-loaded biological activated carbon filter

2022 ◽  
Vol 301 ◽  
pp. 113859
Author(s):  
Zhijun Ren ◽  
Xiaolin Fu ◽  
Guangming Zhang ◽  
Yuyou Li ◽  
Yu Qin ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Low Temperature ◽  
Nitrogen Removal ◽  
Ammonia Nitrogen ◽  
Biological Activated Carbon ◽  
Low Concentration ◽  
Activated Carbon Filter ◽  
Biological Activated Carbon Filter ◽  
Carbon Filter ◽  
Performance And Mechanism

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.

Backwashing Effect on Stabilization of Immobilized Bacteria on Biological Activated Carbon Filter

2011 ◽  
Vol 183-185 ◽  
pp. 338-342 ◽  
Author(s):  
Yu Nan Gao ◽  
Jin Xiang Fu ◽  
Shui Liu
Keyword(s):  
Activated Carbon ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Biological Activated Carbon ◽  
Start Up ◽  
Activated Carbon Filter ◽  
Gradient Gel Electrophoresis ◽  
Biomass Loss ◽  
Biological Activated Carbon Filter ◽  
Carbon Filter ◽  
Stabilization Period

Six dominant microorganisms including four kinds of Pseudomonas and two kinds of Bacillus were isolated from substrate sludge for improving the organic substance removal ability for the biological activated carbon filter (BAC). This paper examines the backwashing effect on the stabilization of these six microorganisms immobilized on the filter. The results showed the backwashing had more impact on bacteria stabilization of BAC filter during start-up period than the stabilization period. The biomass loss was 28.57% during the start-up period more than the stabilization period which biomass loss was 11.76%. The Scan Electron Microscope (SEM) and Denaturing Gradient Gel Electrophoresis of Polymerase Chain Reaction amplified 16S rRNA (PCR-DGGE) photos showed that the ecology of the population did not change with the operation. The biomass of dominant microorganism after air-water scour backwashing decreased during the start-up period and retained stability during long term performance.

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