A bioaugmentation agent allowing the advanced treatment of refractory refinery wastewater in a biological aerated filter and analysis of its microbial community

2020 ◽  
Author(s):  
Lei Feng ◽  
Qingsheng He ◽  
Jianping Wen
Keyword(s):  
Microbial Community ◽  
Advanced Treatment ◽  
Biological Aerated Filter ◽  
Refinery Wastewater ◽  
Aerated Filter

A Novel Application of Combined Bio-Technologies on Chemical Synthesis-Based Pharmaceutical Wastewater

2012 ◽  
Vol 455-456 ◽  
pp. 1261-1266
Author(s):  
Zhan Li Chen ◽  
Xiao Hua Huang ◽  
Zhen Zhong Liu ◽  
Xian Rong Sun
Keyword(s):  
Wastewater Treatment ◽  
Chemical Synthesis ◽  
First Grade ◽  
Advanced Treatment ◽  
Biological Aerated Filter ◽  
Pharmaceutical Wastewater ◽  
Hydrolysis Acidification ◽  
Aerated Filter ◽  
Low Do ◽  
Organic Wastewater

This chemical synthesis-based pharmaceutical wastewater is treated by the process of hybrid hydrolysis acidification technique (HHAT) with anaerobic-low DO condition and the hybrid aerobic bio-technology consisted of alternate-flow biological reactor (ABR) and two-way-flow biological aerated filter (TBAF). The micro aerobic technology was employed in the HHAT and showed its advantages in refractory organic wastewater treatment. The largest plant in pharmaceutical wastewater treatment at home was built. The practice shows that the organics can be greatly removed and the effluent can reach the First Grade Discharge Standard which can be reclaimed with advanced treatment. The performance indicates that the combined bio-technologies are stable in pharmaceutical wastewater treatment.

scholarly journals Correlating Microbial Community Characteristics with Environmental Factors along a Two-Stage Biological Aerated Filter

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3317
Author(s):  
Yuchen An ◽  
Songmin Li ◽  
Xiaoling Wang ◽  
Yuyang Liu ◽  
Ruonan Wang
Keyword(s):  
Microbial Community ◽  
Environmental Factors ◽  
High Throughput Sequencing ◽  
Pollutant Removal ◽  
Organic Load ◽  
Biological Aerated Filter ◽  
Community Characteristics ◽  
Two Stage ◽  
Degrading Bacteria ◽  
Aerated Filter

The purification effect of a biological aerated filter (BAF) mainly comes from the microorganisms in the reactor. Understanding the correlation between microbial community characteristics and environmental factors along the filter has great significance for maintaining good operation and improving the removal efficiency of the filter. A two-stage BAF was employed to treat domestic sewage under organic loads of 1.02 and 1.55 kg/m3·d for 15 days each. 16S rDNA high-throughput sequencing technology and redundancy analysis were applied to explore the correlation between microbial community characteristics and environmental variables. The results showed that: (1) the crucial organic-degrading bacteria in the A-stage filter were of the genus Novosphingobium, which had a significant increase in terms of relative abundance at sampling outlet A3 (135 cm of the filling height) after the increase of organic load; (2) the microbial communities at different positions in the B-stage filter were similarly affected by environmental factors, and the main bacteria associated with nitrogen removal in the B-stage filter were Zoogloea and Rhodocyclus; and (3) to improve the pollutant removal performance of this two-stage biological aerated filter, a strategy of adding an internal circulation in the B-stage filter can be adopted.

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