Activated carbon sequencing batch biofilm reactor to treat industrial wastewater

1997 ◽  
Vol 35 (1) ◽  
Keyword(s):  
Activated Carbon ◽  
Industrial Wastewater ◽  
Biofilm Reactor ◽  
Sequencing Batch Biofilm Reactor

Successful treatment of high azo dye concentration wastewater using combined anaerobic/aerobic granular activated carbon-sequencing batch biofilm reactor (GAC-SBBR): simultaneous adsorption and biodegradation processes

2013 ◽  
Vol 67 (8) ◽  
pp. 1816-1821 ◽  
Author(s):  
E. Hosseini Koupaie ◽  
M. R. Alavi Moghaddam ◽  
S. H. Hashemi
Keyword(s):  
Activated Carbon ◽  
High Performance ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Microscopic Analysis ◽  
Granular Activated Carbon ◽  
Biofilm Reactor ◽  
Treatment System ◽  
Electron Microscopic ◽  
Sequencing Batch Biofilm Reactor

The application of a granular activated carbon-sequencing batch biofilm reactor (GAC-SBBR) for treatment of wastewater containing 1,000 mg/L Acid Red 18 (AR18) was investigated in this research. The treatment system consisted of a sequencing batch reactor equipped with moving GAC as biofilm support. Each treatment cycle consisted of two successive anaerobic (14 h) and aerobic (8 h) reaction phases. Removal of more than 91% chemical oxygen demand (COD) and 97% AR18 was achieved in this study. Investigation of dye decolorization kinetics showed that the dye removal was stimulated by the adsorption capacity of the GAC at the beginning of the anaerobic phase and then progressed following a first-order reaction. Based on COD analysis results, at least 77.8% of the dye total metabolites were mineralized during the applied treatment system. High-performance liquid chromatography analysis revealed that more than 97% of 1-naphthyalamine-4-sulfonate as one of the main sulfonated aromatic constituents of AR18 was removed during the aerobic reaction phase. According to the scanning electron microscopic analysis, the microbial biofilms grew in most cavities and pores of the GAC, but not on the external surfaces of the GAC.

Granular Activated Carbon Sequencing Batch Biofilm Reactor to Treat Problematic Wastewaters

1992 ◽  
Vol 26 (5-6) ◽  
pp. 1195-1203 ◽  
Author(s):  
M. A. A. Jaar ◽  
P. A. Wilderer
Keyword(s):  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Biofilm Reactor ◽  
Adsorptive Capacity ◽  
Substrate Removal ◽  
Sequencing Batch Biofilm Reactor ◽  
Subsequent Decrease ◽  
Activated Carbon Filter ◽  
Micro Organisms ◽  
Carbon Filter

Experiments were conducted to study the performance of a reactor packed with granular activated carbon, and operated in a sequencing fill and draw mode. The reactor was inoculated with micro-organisms, loaded with a solution of 3-chlorobenzoate and thioglycolic acid. Oxygen was transfered to the microorganisms by means of silicon rubber tubings embedded in the activated carbon bed. Comparative studies were conducted with a continuous flow activated carbon filter and with a reactor packed with sand instead of granular activated carbon. Periodic operation of the granular activated carbon reactor provided superior results. High substrate removal efficiency was achieved as was high process stability under shock loading conditions, the latter mainly as a result of intermediate adsorption and subsequent decrease of toxic effects. After a period of 14 months of continuous operation the activated carbon had maintained about 90 per cent of its adsorptive capacity.

Nitrogen removal from livestock and poultry breeding wastewaters using a novel sequencing batch biofilm reactor

2010 ◽  
Vol 62 (11) ◽  
pp. 2599-2606 ◽  
Author(s):  
Hong Xiao ◽  
Ping Yang ◽  
Hong Peng ◽  
Yanzong Zhang ◽  
Shihuai Deng ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Heterotrophic Bacteria ◽  
Biofilm Reactor ◽  
N Accumulation ◽  
Sequencing Batch Biofilm Reactor ◽  
Poultry Breeding ◽  
Mode 2 ◽  
Do Concentration ◽  
Nitrification And Denitrification ◽  
Biological Nitrogen

A study was conducted regarding the biological nitrogen removal from the livestock and poultry breeding wastewater (LPBWs) using a novel sequencing batch biofilm reactor (SBBR). Nitrogen removal process was studied under three aeration strategies/modes, referred to as MODE 1, 2, and 3. The results showed that MODE 2 (one operation period: instant fill of LPBWs, 3.0 h aeration, 1.5 h non-aeration, 1.5 h aeration, 1.0 h non-aeration and rapid drain of treated LPBWs) performed the best in nitrogen removal. Under MODE 2, the removal efficiencies were as high as 96.1 and 92.1% for NH3-N and TN, respectively. Simultaneous nitrification and denitrification (SND), as well as shortcut nitrification and denitrification are likely to be the two main mechanisms for the nitrogen removal in this study. Nitrifying bateria were not inhibited by heterotrophic bacteria with C/N ratios ranging from 18.1 to 21.4 and DO concentration of 2.0 mg/l. Alternation between aeration and non-aeration played an important role in NO2−-N accumulation.

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