Rapid formation and characterization of aerobic granules in pilot-scale sequential batch reactor for high-strength organic wastewater treatment

2018 ◽  
Vol 22 ◽  
pp. 27-33 ◽  
Author(s):  
Rania Ahmed Hamza ◽  
Oliver Terna Iorhemen ◽  
Mohamed Sherif Zaghloul ◽  
Joo Hwa Tay
Keyword(s):  
Wastewater Treatment ◽  
Batch Reactor ◽  
High Strength ◽  
Pilot Scale ◽  
Aerobic Granules ◽  
Sequential Batch Reactor ◽  
Rapid Formation ◽  
Organic Wastewater

DEVELOPMENT OF BIOGRANULES IN A PILOT-SCALE SEQUENTIAL BATCH REACTOR TREATING ACTUAL TEXTILE WASTEWATER

2017 ◽  
Vol 79 (6) ◽  
Author(s):  
Ranjeni Krishnen ◽  
Azmi Aris ◽  
Khalida Muda ◽  
Normala Hashim ◽  
Zaharah Ibrahim ◽  
...  
Keyword(s):  
Batch Reactor ◽  
High Strength ◽  
Textile Wastewater ◽  
Pilot Scale ◽  
Volume Index ◽  
Controlled Environment ◽  
Textile Mills ◽  
Sequential Batch Reactor ◽  
Working Volume ◽  
Scale Reactor

A pilot-scale sequential batch reactor (SBR) biogranular system for the treatment of actual textile wastewater was developed in this study. The reactor had a working volume of 70 L and was operated according to SBR’s sequence for 24-hr cycle, which includes sequential anaerobic and aerobic reaction phases. Wastewater from two textile mills were used as feed, while sewage and pineapple wastewater were used as co-substrate. After operating the system for 60 d, 30% of the sludge had transformed into biogranules and had increased to 67% at the end of the study. The biogranules developed in the reactor have sizes ranging from 0.2 mm to 9.5 mm with a mean settling velocity of 28 ± 7 m/hr and sludge volume index of 73.9 mL/g. At the end of the study, the system yields 92% removal of COD, but the color removal oscillated throughout the development period in the range of 50 to 70%. Although the biogranules development is much faster in lab-scale reactor under controlled environment, the findings indicate the feasibility of developing biogranules in a bigger scale reactor using actual textile wastewater and other high-strength biodegradable wastewater as co-substrate. 

Characterization of aerobic granules formed in an aspartic acid fed sequencing batch reactor under unfavorable hydrodynamic selection conditions

Chemosphere ◽  
2020 ◽  
Vol 260 ◽  
pp. 127600
Author(s):  
Bin-Bin Wang ◽  
Qin Luo ◽  
Hui-Juan Li ◽  
Qian Yao ◽  
Lin Zhang ◽  
...  
Keyword(s):  
Aspartic Acid ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Aerobic Granules

A pilot scale study of a sequencing batch reactor treating municipal wastewater operated via the UP-PND process

2008 ◽  
Vol 58 (2) ◽  
pp. 435-438 ◽  
Author(s):  
M. Kornaros ◽  
C. Marazioti ◽  
G. Lyberatos
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Batch Reactor ◽  
Treatment Plant ◽  
Pilot Scale ◽  
Treated Wastewater ◽  
Synthetic Wastewater ◽  
Second Step ◽  
Decentralized Wastewater Treatment ◽  
Real Wastewater

SBRs are usually preferred as small and decentralized wastewater treatment systems. We have demonstrated previously that using a frequent enough switching between aerobic and anoxic conditions and a specific to the treated wastewater aerobic to anoxic phase ratio, it is possible to by-pass the second step of nitrification (i.e. conversion of nitrite to nitrate nitrogen). This innovative process for nitrate by-pass has been branded as UP-PND (University of Patras-Partial Nitrification Denitrification) (WO 2006/129132). The proved methodology was successfully transferred from a lab-scale SBR reactor treating synthetic wastewater to a pilot-scale SBR system treating real wastewater. In this work we present the results from the operation of this pilot-scale SBR, constructed in the Wastewater Treatment Plant of Patras (Greece), using 6-hour, 8-hour and 12-hour cycles. It is demonstrated that three pairs of aerobic/anoxic phases with a relative duration of 1:2 (8-hour cycle) and 2:3 (12-hour cycle) secures the desired by-pass of nitrate production.

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