scholarly journals Effect of controlling filamentous bulking sludge by Sequencing Batch Reactor Activated Sludge Process

2021 ◽  
Vol 261 ◽  
pp. 04031
Author(s):  
Shengshu Ai ◽  
Linzhu Du ◽  
Ziheng Wang ◽  
Lubo Shao ◽  
Hua Kang ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Sequencing Batch Reactor ◽  
High Throughput Sequencing ◽  
Batch Reactor ◽  
Inhibitory Effect ◽  
Activated Sludge Process ◽  
Aeration Time ◽  
Significant Inhibitory Effect ◽  
Set Up ◽  
Settling Performance

Three groups of SBR reactors A, B and C with different aeration time were set up to culture the activated sludge which has already bulked. The results showed that the settling performance of activated sludge in reactor A changed a little, but reactors B and C had been significantly improved. High-throughput sequencing results showed that the aeration time had a significant inhibitory effect on the growth of Thothrix, and the longer the aeration time was, the more obvious the inhibition was. When the aeration time is more than 6h, the SBR mode can effectively inhibit filamentous sludge bulking, and the longer the aeration time, the better the effect.

Advanced Treatment of Domestic Wastewater Using Sequencing Batch Reactor Activated Sludge Process

1993 ◽  
Vol 28 (10) ◽  
pp. 267-274 ◽  
Author(s):  
M. Imura ◽  
E. Suzuki ◽  
T. Kitao ◽  
S. Iwai
Keyword(s):  
Activated Sludge ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Domestic Wastewater ◽  
Experimental Period ◽  
Small Scale ◽  
Experimental Plant ◽  
Activated Sludge Process ◽  
Nitrogen And Phosphorus ◽  
Experimental Apparatus

In order to apply a sequencing batch reactor activated sludge process to small scale treatment facilities, various experiments were conducted by manufacturing an experimental apparatus made of a factory-produced FRP cylinder transverse tank (Ø 2,500mm). Results of the verification test conducted for one year by leading the wastewater discharged from apartment houses into the experimental apparatus were as follows. Excellent performance was achieved without any addition of carbon source, irrespective of the organic compound concentration and the temperature of raw wastewater. Organic substances, nitrogen and phosphorus were removed simultaneously. Due to the automated operation format, stable performance was obtained with only periodic maintenance. Though water depth of the experimental plant was shallow, effective sedimentation of activated sludge was continued during the experimental period. Regarding the aerobic and anaerobic process, nitrification and denitrification occurred smoothly.

pH: Keyfactor in the Biological Phosphorus Removal Process

1994 ◽  
Vol 29 (7) ◽  
pp. 71-74 ◽  
Author(s):  
G. J. F. Smolders ◽  
M. C. M. van Loosdrecht ◽  
J. J. Heijnen
Keyword(s):  
Activated Sludge ◽  
Phosphorus Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Glycogen Metabolism ◽  
Activated Sludge Process ◽  
Biological Phosphorus Removal ◽  
Anaerobic Conditions ◽  
Biochemical Mechanisms ◽  
Biological Phosphorus

Experiments have been performed, using a sequencing batch reactor, to examine the effect of pH on biological phosphorus removal in the activated sludge process. The results, which indicate that glycogen metabolism occurs during anaerobic conditions, are useful in elucidating the biochemical mechanisms involved in phosphorus-removal, and have potential implications for systems such as Phostrip.

scholarly journals PERAN KOMUNITAS MIKROBA LUMPUR AKTIF DALAM PEROMBAKAN DETERGEN ALKIL SULFONAT LINEAR DAN BENZENA ALKIL SULFONAT

2004 ◽  
Vol 10 (1) ◽  
pp. 75-80
Author(s):  
I Made Sudiana
Keyword(s):  
Microbial Community ◽  
Activated Sludge ◽  
Batch Reactor ◽  
Aerobic Condition ◽  
Appropriate Technology ◽  
Activated Sludge Process ◽  
Biodegradation Rate ◽  
Complex Microbial Community ◽  
Alkyl Sulfonate ◽  
Set Up

The study was conducted to evaluate the biodegradation of detergent contained Alkyl Sulfonate (LAS) and Benzene Alkyl Sulfonate (BAS) occur under aerobic condition by complex microbial community in activated sludge process. A 1.8 L of sequential batch reactor, and batch experiments were set up to study the characters LAS and BAS biodegradation. Microbial community in Activated Sludge actively brook down LAS and BAS. Biodegradation rate of LAS was higher than that of BAS. The complex chemical molecule structure of ABS could be the reason for slower degradation of BAS. The value of LAS degradation under aerobic condition were indicated by μmax of 0.26–h, Ks = 15.5 mg/L, Vmax = 11.04 mg/L. hour–1and Km = 8.19 mg/L. Whereas for BAS were μmax of 0.22–h, Ks = 25.1 mg/L, Vmax = 12.74 mg/L. hour–1and Km = 8.119 mg/L. Activated sludge process is appropriate technology for removal of removal of LAS and BAS.

Removal of Nutrients and BOD from Soybean Fermentation Wastewater in a Ten-Year-Old Sequencing Batch Reactor Activated Sludge Process

1990 ◽  
Vol 22 (9) ◽  
pp. 85-92 ◽  
Author(s):  
M. Okada ◽  
K. Terazono ◽  
R. Sudo
Keyword(s):  
Activated Sludge ◽  
High Performance ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Diurnal Fluctuation ◽  
Activated Sludge Process ◽  
Subsequent Increase ◽  
Fermentation Products ◽  
Soybean Fermentation ◽  
Bod Removal

Surveys on the performance of nitrogen, phosphorus and BOD removal were carried out in a full-scale conventional, i.e. continuously aerated, sequencing batch reactor (SBR) activated sludge process which was constructed ten years ago, treating wastewater from a small factory producing soybean fermentation products. The old SBR plant, originally designed only for BOD removal, is operated with one cycle per day and aerated continuously for 19 hours per day from the start of working and wastewater inflow followed by sedimentation and decanting the next morning before work. In spite of continuous and a constant rate of aeration, DO increased rapidly immediately after the beginning of aeration, whereas it decreased down to less than 0.5 mg l−1 with the inflow of wastewater. DO increased again after work with little inflow of wastewater. The diurnal fluctuation of DO enhanced both nitrification and denitrification simultaneously in a single tank reactor with continuous aeration and resulted in high performance of nitrogen removal beyond expectation as well as BOD. The anaerobic condition and subsequent increase in DO also enhanced release and luxury uptake of phosphorus, i.e. biological removal of phosphorus. Increase in the strength of wastewater enhanced denitrification without deterioration of BOD removal. Phosphorus removal, however, was deteriorated by insufficient sludge production.

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