Successful start-up of anammox process from activated sludge and anaerobic sludge in a sequencing batch reactor using an unconventional strategy

2021 ◽  
Vol 156 ◽  
pp. 105132
Author(s):  
Shelly Verma ◽  
Achlesh Daverey ◽  
Jih-Gaw Lin
Keyword(s):  
Activated Sludge ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Anaerobic Sludge ◽  
Start Up ◽  
Anammox Process

Start-Up and Cultivation of A2N Denitrifying Phosphorus and Nitrogen Removal System

2012 ◽  
Vol 610-613 ◽  
pp. 1454-1458
Author(s):  
Ming Fen Niu ◽  
Hong Jing Jiao ◽  
Li Xu ◽  
Yan Yu ◽  
Jian Wei
Keyword(s):  
Activated Sludge ◽  
Removal Efficiency ◽  
Total Nitrogen ◽  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Nitrogen And Phosphorus ◽  
Start Up ◽  
Two Phases ◽  
Removal System

A2N is two-sludge system, by using the method that first bringing up the cultivation of denitrifying phosphorus removing bacteria (DPB) and nitrification biofilm separately then connecting them, which can start up A2N system successfully. Nitrification biofilm was cultivated in a sequencing batch reactor (SBR). After 30 days, NH4+-N effluent concentration steadily stayed below 0.5mg·L-1.In another SBR, the activated sludge for the enrichment of DPB is from the anaerobic tank, which was firstly operated under anaerobic/aerobic (A/O) condition. After 20 days, PAOs was successfully enriched. Then, the activated sludge was conducted under anaerobic/anoxic/aerobic (A/A/O) condition, maintaining the anaerobic time, gradually increased anoxic time and induced aerobic time. After 30 days DPB was successfully enriched, two phases totally take 50 days. The removal efficiency of total nitrogen and phosphorus are above 85 % and 95 %, so that A2N system was started up successfully.

Treatment of the Liquor Wastewater Using Sequencing Batch Reactor

2013 ◽  
Vol 781-784 ◽  
pp. 2047-2050
Author(s):  
Xiu Qiong Guan ◽  
Hong Xia Gao ◽  
Tian Xue Lin ◽  
Chun Liu
Keyword(s):  
Activated Sludge ◽  
Removal Efficiency ◽  
Sequencing Batch Reactor ◽  
Removal Rate ◽  
Batch Reactor ◽  
Reaction System ◽  
Experimental Results ◽  
Treatment Efficiency ◽  
Cyclic Operation ◽  
Start Up

Sequencing Batch Reactor (SBR) was investigated for the treatment of liquor wastewater in this paper. This study includes the test of start-up of the SBR, running of the reactor by treating the wastewater. During the start-up process the activated sludge was cultured and acclimated. After acclimation the removal efficiency of CODcr can reach around 99%. Following investigations were focused on evaluation of the treatment efficiency and the reactive cycle during running the SBR. The experimental results showed that running parameters of SBR reaction system were Fill 0.5 h, React 10.0 h, Settle 2.0~2.5 h, Drain 0.5h, Idle 4.0h. Under these conditions the removal rate of CODcr can reach 99%. So the performance of SBR for the wastewater was satisfactory as the wastewater had 1400~2000mg/l of CODcr. The cyclic operation of SBR used in this study proved more effective in treating the wastewater.

Start-up of a Biological Sequencing Batch Reactor to Treat Supernatant from Anaerobic Sludge Digester

2006 ◽  
Vol 27 (8) ◽  
pp. 891-899 ◽  
Author(s):  
A. Galí ◽  
J. Dosta ◽  
S. Macé ◽  
J. Mata-Alvarez
Keyword(s):  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Anaerobic Sludge ◽  
Start Up

Enrichment of activated sludge in a sequencing batch reactor for polyhydroxyalkanoate production

2006 ◽  
Vol 54 (1) ◽  
pp. 119-128 ◽  
Author(s):  
M. Majone ◽  
M. Beccari ◽  
S. Di Gregorio ◽  
D. Dionisi ◽  
G. Vallini
Keyword(s):  
Steady State ◽  
Microbial Biomass ◽  
Activated Sludge ◽  
Sequencing Batch Reactor ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Batch Reactor ◽  
Treatment Plant ◽  
Polymer Content ◽  
Intermittent Feeding ◽  
Start Up

The paper describes the start up of a process for the production of polyhydroxyalkanoates (PHAs) from activated sludge. The excess sludge from a wastewater treatment plant was inoculated in a lab-scale sequencing batch reactor (SBR) to be enriched under aerobic conditions through intermittent feeding with a mixture of organic acids. Enriching of activated sludge was monitored through the measurement of polymer concentrations either in the mixed liquor or in the microbial biomass. The bacterial population dynamics during the SBR start up was followed through denaturing gradient gel electrophoresis and the main species present at the steady state were identified. All the measured parameters significantly changed in the SBR during first two weeks after the inoculum was seeded into the reactor, they then stabilized. At the steady state, the SBR produced 2.6 gVSS l−1 d−1, with a PHA content of 11% (on a COD basis). The enriched microbial biomass was then transferred into a batch reactor where the bacterial polymer content was increased through a new feeding. In the final batch stage, maximum storage rate and maximum polymer content in the biomass were 405 mgCOD gCOD−1 h−1 and 44% (on a COD basis), respectively. The PHA storage from the enriched microbial biomass was about 20 times faster and the PHA content was about 4 times higher than that of the inoculated activated sludge. Observations by fluorescence microscopy showed that the majority of microorganisms in the enriched biomass could be stored. Among the numerically most representative genera in the enriched biomass, Thauera, Candidatus Meganema perideroedes, and Flavobacterium were identified.

Treatment of the OCC Pulping Wastewater Using SBR Cycle Control

2012 ◽  
Vol 550-553 ◽  
pp. 2100-2103
Author(s):  
Jun Li ◽  
Xiu Qiong Guan ◽  
Chun Liu
Keyword(s):  
Control System ◽  
Activated Sludge ◽  
Removal Efficiency ◽  
Sequencing Batch Reactor ◽  
Removal Rate ◽  
Batch Reactor ◽  
Reaction System ◽  
Treatment Efficiency ◽  
Cyclic Operation ◽  
Start Up

ABSTRACT. SBR (Sequencing Batch Reactor) was investigated for the treatment of OCC pulping wastewater in this paper. This study includes the design of the SBR device and its control system, the test of start-up of the SBR, running of the reactor by treating the wastewater. During the start-up process the activated sludge was cultured and acclimated. After acclimation the removal efficiency of CODcr can reach around 80%. Following investigations were focused on evaluation of the treatment efficiency and the reactive cycle during running the SBR. The experimental results showed that the running parameters of SBR reaction system were Fill 2.0 h, React 12.0 h, Settle 1.0~2.0 h, Drain 0.5h, Idle 4.0h. Under these conditions the removal rate of COD can reach 94%. So the performance of SBR for the wastewater was satisfactory as the wastewater had 1500~2500mg/l of COD. The cyclic operation of SBR used in this study proved more effective in treating the wastewater.

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