Desorption trials and granular stability of chromium loaded aerobic granular sludge from synthetic domestic wastewater treatment

2018 ◽  
Vol 1 ◽  
pp. 9-15 ◽  
Author(s):  
Kaifei Chen ◽  
Ziwen Zhao ◽  
Xiaojing Yang ◽  
Zhongfang Lei ◽  
Zhenya Zhang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Domestic Wastewater ◽  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Domestic Wastewater Treatment

scholarly journals Performance of Aerobic Granular Sludge for Domestic Wastewater Treatment

2019 ◽  
Vol 8 (12) ◽  
pp. 3851-3854
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Batch Reactor ◽  
Biomass Concentration ◽  
Domestic Wastewater ◽  
Granular Sludge ◽  
Volume Index ◽  
Aerobic Granular Sludge ◽  
Domestic Wastewater Treatment ◽  
Low Strength

Aerobic granular sludge can be used to treat various types of wastewater, such as industrial, municipal and domestic wastewater. This study investigated the treatment of low-strength domestic wastewater while simultaneously developed aerobic granular sludge in a sequencing batch reactor (SBR). Activated sludge was used as the seeding for granulation. The results indicated good COD and ammoniacal nitrogen removal at 72% and 73%, respectively. Aerobic granular sludge was successfully developed with low sludge volume index (SVI30) of 29 mL/g, which demonstrated an excellent settling property of aerobic granular sludge. Biomass concentration increased significantly compared to the seed sludge, indicating high biomass density in the SBR system. Settling velocity of aerobic granular sludge was significantly higher compared to the conventional activated sludge. This study showed the feasibility of aerobic granular sludge to be developed using low-strength domestic wastewater. Moreover, this study demonstrated the long-term application of aerobic granular sludge in domestic wastewater treatment.

Aerobic granular sludge technology and nitrogen removal for domestic wastewater treatment

2015 ◽  
Vol 71 (7) ◽  
pp. 1040-1046 ◽  
Author(s):  
J. Wagner ◽  
L. B. Guimarães ◽  
T. R. V. Akaboci ◽  
R. H. R. Costa
Keyword(s):  
Nitrogen Removal ◽  
Domestic Wastewater ◽  
Granular Sludge ◽  
Ammonium Assimilation ◽  
Aerobic Granular Sludge ◽  
Granule Formation ◽  
Granulation Process ◽  
Start Up ◽  
Domestic Wastewater Treatment ◽  
Average Size

This study evaluated aerobic granulation and nitrogen removal via assimilation, nitrification, and denitrification of a system fed with real domestic wastewater. The granulation process was complete after 160 days of operation. The mature granules had an almost spherical structure, an average size of 473.0 μm, and a good settling ability (SVI30 of 75.6 mL g−1). Ammonium assimilation for cell growth varied between 3.5 and 64.6% during reactor start-up. After granule formation, assimilation accounted for less than 5% and nitrogen was mainly removed by partial nitrification up to nitrite, followed by denitrification via nitrite. Average efficiencies of 86.6% for nitrification, 59.5% for denitrification, and 60.5% for total nitrogen were obtained in this period. The assimilation ability of the mature granules grown on domestic wastewater was lower than the commonly reported results obtained for synthetic granules.

AN APPROACH ON ATTACHED GROWTH PROCESS FOR DOMESTIC WASTEWATER TREATMENT

2014 ◽  
Vol 13 (1) ◽  
pp. 145-152 ◽  
Author(s):  
Alireza Valipour ◽  
Seyed Masoud Taghvaei ◽  
Venkatraman Kalyan Raman ◽  
Gagik Badalians Gholikandi ◽  
Shervin Jamshidi ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Growth Process ◽  
Domestic Wastewater ◽  
Attached Growth ◽  
Domestic Wastewater Treatment
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