• The Transactions of the Korean Institute of Electrical Engineers D
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• v.53 no.4
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• pp.221-225
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• 2004

This paper shows the application of artificial intelligence technique such as polynomial neural network in modeling and identification of sequencing batch reactor (SBR). A wastewater treatment process for nitrogen removal in the SBR is presented. Simulation results have shown that the nonlinear process can be modeled reasonably well by the Present scheme which is simple but efficient.

• Journal of Korean Society of Water and Wastewater
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• v.23 no.4
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• pp.431-438
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• 2009

The purpose of this study was to evaluate the performances of zero-valent iron (ZVI) combined SBR (Z-SBR) process in decolorization and organic removal of synthetic dye wastewater. The batch test for optimizing the operation parameters of ZVI column showed that the appropriate EBCT was around 11 min and the pH of the dye wastewater was below 7.0. During the step increase of influent color unit from 300 to 1,000cu, about 53 to 79% decolorization efficiency could be achieved in control SBR (C-SBR, without ZVI column), which resulted from destroying azo bond of synthetic dye in anaerobic condition. For the same influent color loading, Z-SBR showed always higher decolorization efficiency than C-SBR with an aid of ZVI reducing power. The TCOD concentration in Z-SBR effluent was 20-30mg/L lower than C-SBR effluent although the TCOD before and after ZVI column was nearly same. It means that breakdown of azo bond by ZVI reducing power could increase biodegradability of synthetic dye wastewater.

• Journal of Navigation and Port Research
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• v.38 no.6
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• pp.601-606
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• 2014

Lab scale experiment study was carried out for biological treatment process development in shipboard. SBR(Sequence Batch Reactor) process with BM(Beneficial Microorganisms) was investigated for practical application on shipboard sewage treatment. From the results it was suggested that SBR process with BM might be a suitable process in terms of harmful materials removal. By adding BM to SBR system, the useful species of microorganisms and EPS(Extracellar Polymetric Substances) in sludge was increased. It was found that the biodegrability and harmful organic compounds like VOCs and harmful inorganic compounds like heavy metals. was reduced over 70%. As far as reclamation water is considered, this process is very advantageous to special environments such as cruise ships, because the method of adding BM makes it unnecessary to add other facilities on the SBR system.

• Environmental engineer
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• s.168
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• pp.68-74
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• 2000

• Journal of Navigation and Port Research
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• v.35 no.10
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• pp.817-822
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• 2011

Lab scale experiment study was carried out for biological treatment process development in cruise. SBR(Sequence Batch Reactor) process with BM(Beneficial Microorganisms) was investigated for practical application on shipboard sewage treatment. From the results it was suggested that SBR process with BM might be a suitable process for cruise sewage treatment in terms of decrease in odorous compounds, maintenance of useful microorganisms and creating special environmental conditions. By adding BM to SBR system, odor unit of sulfur compounds was about 20 times reduced.

• Journal of Korean Society of Environmental Engineers
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• v.27 no.7
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• pp.719-725
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• 2005

Anaerobic fill time and feeding pattern in SBR operation were investigated to find way of minimizing poor nitrogen removal efficiency in BNR process without external carbon addition. The three types of the modified SBR operations that were CO-SBR, IA-SBR, and SF-SBR were tested by lab-scale and pilot-scale SBR processes($2\;m^3/day$). In addition, practical equation for biological nitrogen removal was suggested and the equation considered the effect of ratio of fill volume over whole SBR volume and the ratio of step-feed in SBR. The denitrification efficiency of the SF-SBR was best among the three SBRs and followed by IA-SBR, and CO-SBR. The efficiency was 95%, 61%, and 19%, respectively. Looking at the change of sludge floc density by the length of anaerobic fill time, the density of sludge floc at 1 hour and 2 hours of anaerobic fill time were greater than 3 hours of one. The floc size distributions were $100{\sim}300\;{\mu}m$ and $200{\sim}400\;{\mu}m$ with respect to anaerobic fill time 2 hours and 3 hours, respectively.

• Journal of the Korea Organic Resources Recycling Association
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• v.12 no.3
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• pp.126-133
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• 2004

This study is performed to examine the removal efficiency of organic materials,$NH_4-N$ and P in Swine-Wastewater Treatment using Hybrid-process. It named SBR process, Hybrid-process as RunI(SBR), and Run II(Struvite Tank-SBR), and compared the removal efficiency of each Run. The removal efficiency of the organic materials in each Run is like this; In Run I, TS, VS and COD was 43%, 39%, and 70%, respectively. And in Run II, TS VS, and COD was 52%, 52%, and 82%, respectively. It shows that the removal efficiency of Run II using Strutive Tank is higher. And as for the removal efficiency of $NH_4-N$ and T-P in each Run, Run II using Strutive Tank was 90% and 57%, higher than 56% and 49% of RunI. Especially for $NH_4-N$, Run II showed much higher efficiency, and this proved that Strutive Tank was very efficient process of all for the removal of N and P. As a result of this study, Hybrid-process that combines Strutive Tank and SBR is proved to be a very good process in Swine Wastewater Treatment.

• Journal of Korean Society of Water and Wastewater
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• v.27 no.6
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• pp.815-826
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• 2013

Using a developed mathematical model and calibrated kinetic constants, numerical experiments for a aerobic digestion of wastewater sludge by SBR aerobic digestion process combined with ultrasonication (USSBR) were performed in this study. It simulated well the phenomena of the decomposition of particulate organics and the release of organic nitrogen and transformation. To achieve 40 % of particulate organics removal, USSBR process requires only 6 days of SRT and 14 W/L of ultrasonic power whereas SBR aerobic digestion process requires 12 days of SRT. Based on the model simulation results, an empirical equation was presented here. This equation will be used to predict digestion efficiency for the given variables of SRT and ultrasonic power dose. USSBR aerobic digestion process can reduce the nitrogen concentration. The optimal operation strategy for the simultaneous removal of solids and soluble nitrogen in this process is estimated to 7 days of SRT with 14 W/L of ultrasonic power dose while anoxic period was 6 hours out of 24 hours of cycle time. In this condition, 40 % of particulate organics as well as 36 % of total nitrogen will be removed and the soluble nitrogen concentration of the centrate will be lower less then 40 mg/L.

• Journal of Navigation and Port Research
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• v.36 no.8
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• pp.643-649
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• 2012

Lab scale experiment study was carried out for biological treatment process development in cruise. SBR(Sequence Batch Reactor) process with BM(Beneficial Microorganisms) was investigated for practical application on shipboard sewage treatment. From the results it was suggested that SBR process with BM might be a suitable process for advanced cruise sewage treatment in terms of decrease in T-N and T-P, maintenance of useful microorganisms and control of sludge bulking. By adding BM to SBR system, about 40% of EPS in sludge was increased, about 74% of total nitrogen was reduced and the total phosphorus reduction averaged 75%.

• Journal of the Korean Society of Marine Environment & Safety
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• v.4 no.1
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• pp.41-48
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• 1998

There are several serious problems in treating shipboard wastewater due to special environmental conditions of ship, such as confined space, rolling and pitching, change of temperature and so on. It was suggested that Sequence Batch Reator (SBR) process might be suitable for overcoming above problems in terms of small size, high capacity of treating wastewater and full automation. In this study the SBR process was used for the secondary treatment of shipboard wastewater. The average removal efficiency of DOC, nitrogen, phosphorus and surfactants(MBAS) were studied and the effects of various C/N ration on the efficiency of treatment were investgated. From the experimental results it was convinced that the SBR process would be able to be used as a suitable process for removing organic matters and nitrogen in reuse system of shipboard wastewater.