Partial nitrification and denitrification in a sequencing batch reactor treating high-salinity wastewater

2016 ◽  
Vol 288 ◽  
pp. 207-215 ◽  
Author(s):  
Zonglian She ◽  
Linting Zhao ◽  
Xiaoling Zhang ◽  
Chunji Jin ◽  
Liang Guo ◽  
...  
Keyword(s):  
Sequencing Batch Reactor ◽  
High Salinity ◽  
Batch Reactor ◽  
Partial Nitrification ◽  
Nitrification And Denitrification ◽  
Salinity Wastewater

scholarly journals Full-Scale Processing by Anaerobic Baffle Reactor, Sequencing Batch Reactor, and Sand Filter for Treating High-Salinity Wastewater from Offshore Oil Rigs

Processes ◽  
2018 ◽  
Vol 6 (12) ◽  
pp. 256 ◽  
Author(s):  
Wenjie Zhang ◽  
Yuan Wei ◽  
Yue Jin
Keyword(s):  
Sequencing Batch Reactor ◽  
Municipal Wastewater ◽  
High Salinity ◽  
Batch Reactor ◽  
Full Scale ◽  
Municipal Wastewater Treatment ◽  
Sand Filter ◽  
Stable Performance ◽  
Offshore Oil ◽  
Salinity Wastewater

High-salinity wastewater discharged from offshore oil rigs (WORS) is harmful to marine environments. Therefore, WORS should be properly treated before discharge. In this study, a full-scale anaerobic baffle reactor (ABR) + sequencing batch reactor (SBR) + sand filter (SF) process was used for the first time to treat WORS at an inshore treatment terminal. After seeding with residual sludge from a municipal wastewater treatment facility, the start-up of the ABR and SBR was accomplished in one month. During a steady running period, the ABR + SBR process showed stable performance in treating WORS. The results of microbial diversity indicated that Rhizobiales, Thermotogales, and Actinomycetales were the most abundant genera in the ABR sample, while Acidobacteria DRC31, Lactobacillales, and Bacillales prevailed in the SBR sample. The results showed that ABR + SBR is a reliable process for WORS treatment, with the treated WORS meeting the National Sewage Comprehensive Emission Standards (GB8978-1996).

Effect of cadmium on the performance of partial nitrification using sequencing batch reactor

Chemosphere ◽  
2019 ◽  
Vol 222 ◽  
pp. 913-922 ◽  
Author(s):  
Liqiu Zhang ◽  
Jingjing Fan ◽  
Hang N. Nguyen ◽  
Shugeng Li ◽  
Debora F. Rodrigues
Keyword(s):  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Partial Nitrification

Effect of Sludge Loading on the Simultaneous Nitrification and Denitrification by Using a Sequencing Batch Bioreactor

2011 ◽  
Vol 183-185 ◽  
pp. 231-235
Author(s):  
Yan Ping Jia ◽  
Lan He Zhang ◽  
Zhi Ling Zhao ◽  
Tao Yang
Keyword(s):  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Ammonia Nitrogen ◽  
Idle Time ◽  
Synthetic Wastewater ◽  
Simultaneous Nitrification And Denitrification ◽  
Aeration Time ◽  
Batch Bioreactor ◽  
Do Concentration ◽  
Nitrification And Denitrification

In this study, a sequencing batch reactor (SBR) was used to treat synthetic wastewater when dissolved oxygen (DO) concentration and temperature were 0.5-1.0mg/L and 30±1°C, respectively. Effect of sludge loading(Ns) on simultaneous nitrification and denitrification (SND) was investigated. The results indicated that removal efficiencies of ammonia nitrogen (NH4+-N), COD and total nitrogen (TN) were all higher than 90%, respectively, when influent NH4+-N and Ns were 35-45mg/L, 0.15kgCOD/(kgMLSS•d) under 7 hours of aeration time and 1 hour of idle time, respectively. Therefore, the SBR has obviously achieved simultaneous nitrification and denitrification.

Nitrogen removal from pharmaceutical manufacturing wastewater with high concentration of ammonia and free ammonia via partial nitrification and denitrification

2004 ◽  
Vol 50 (6) ◽  
pp. 31-36 ◽  
Author(s):  
Y.Z. Peng ◽  
Y.Z. Li ◽  
C.Y. Peng ◽  
S.Y. Wang
Keyword(s):  
Nitrogen Removal ◽  
Accumulation Rate ◽  
Batch Reactor ◽  
Free Ammonia ◽  
Pharmaceutical Manufacturing ◽  
Partial Nitrification ◽  
High Concentration ◽  
Wastewater Stream ◽  
Nitrification And Denitrification ◽  
Study Laboratory

In this study, laboratory-scale experiments were conducted applying a Sequencing Batch Reactor (SBR) activated sludge process to a wastewater stream from a pharmaceutical factory. Nitrogen removal can be achieved via partial nitrification and denitrification and the efficiency was above 99% at 23°C ± 1. The experimental results indicated that the nitrite oxidizers were more sensitive than ammonia oxidizers to the free ammonia in the wastewater. The average accumulation rate of nitrite was much higher than that of nitrate. During nitrogen removal via the nitrite pathway, the end of nitrification and denitrification can be exactly decided by monitoring the variation of pH. Consequently, on-line control for nitrogen removal from the pharmaceutical manufacturing wastewater can be achieved and the cost of operation can be reduced.

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