scholarly journals The effect of time and velocity variation in sequencing batches reactor on cod and bod, removal efficiency in tofu waste

2021 ◽  
Vol 896 (1) ◽  
pp. 012028
Author(s):  
N Hardyanti ◽  
S Sudarno ◽  
B Zaman ◽  
A Arihta ◽  
R Putri
Keyword(s):  
Industrial Wastewater ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Anaerobic Bacteria ◽  
Liquid Waste ◽  
Velocity Variation ◽  
Septic Tank ◽  
Sequence Batch Reactor ◽  
Bod Removal ◽  
Biological Treatment Process

Abstract The tofu industry produces liquid waste that can cause pollution if it is not processed first. Tofu liquid waste has the characteristics of containing high organic matter such as BOD and COD so that if it has directly discharged into the environment, it will reduce the carrying capacity of the environment. The purpose of this study was to determine and analyse the effect of variations in times and velocity of sequence batch reactor on the optimization of COD and BOD removal in tofu industrial wastewater by anaerobic bacteria originating from natural sediments. The method used is an experimental method where the method is to find the effect on other things controlled by using artificial waste. The removal of COD and BOD in tofu industrial wastewater can be done by biological treatment process with attached growth using Sequencing Batch Reactor. The reactor inoculated by the septic tank sediment was fed with artificial waste containing a concentration of COD of 7,000 mg/l and BOD of 2,000 mg/l. For 35 days, this reactor will be operated in batches. Results showed a decrease in BOD and COD parameters using a sequencing batch reactor with BOD concentration 176 mg/l and COD concentration 570 mg/l.

scholarly journals The effect of time and velocity variation in sequencing batches reactor on TSS and nitrogen removal in tofu waste

2021 ◽  
Vol 896 (1) ◽  
pp. 012027
Author(s):  
S Sudarno ◽  
N Hardyanti ◽  
B Zaman ◽  
A Arihta ◽  
R Putri
Keyword(s):  
Industrial Wastewater ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Anaerobic Bacteria ◽  
Liquid Waste ◽  
Preliminary Test ◽  
Velocity Variation ◽  
Sequence Batch Reactor ◽  
Home Industries ◽  
Very High

Abstract The tofu industry is one of the home industries which in the processing process, produces liquid waste. Tofu liquid waste is known to contain very high organic matter such as Nitrogen and TSS so that if it is directly discharged into water bodies, if discharged directly into the environment will cause water. The purpose of this study was to determine and analyse the effect of variations in times and velocity of sequence batch reactor on the optimization of Nitrogen and TSS removal in tofu industrial wastewater by anaerobic bacteria originating from natural sediments. This study uses a Sequencing Batch Reactor, and the waste used is artificial by the characteristics in the preliminary test. In this study, time and speed variations were used in the mixing process. The artificial waste has a TSS value of 2,910 mg/l and Nitrogen of 18.82 mg/l. The results show that using a sequence batch reactor can reduce the TSS value to 66 mg/l and reduce the nitrogen value to 1.214 mg/l.

Intensive Biological Process Based on SBR Reactor for Industrial Wastewater Treatment

2008 ◽  
Vol 59 (10) ◽  
Author(s):  
Margareta Nicolau ◽  
Viorel Patroescu ◽  
Cristiana Cosma ◽  
Laurentiu Dinu ◽  
Costel Bumbac ◽  
...  
Keyword(s):  
Industrial Wastewater ◽  
Sequencing Batch Reactor ◽  
Biological Process ◽  
Batch Reactor ◽  
Organic Load ◽  
Effluent Quality ◽  
Biological Sludge ◽  
Sludge Stabilization ◽  
Acclimation Period ◽  
Bod Removal

A two-stage aerobic Sequencing Batch Reactor system (SBR) designed and constructed by INCD-ECOIND�s specialists was used for treatment of the wastewater discharged from drugs fabrication (conditioning operations), with variable concentrations of organic load: COD = 1200-3300 mg O2/L, BOD5 = 490-1570 mg O2/L. After acclimation period, the 1st stage and 2nd stage SBRs were able to achieve COD and BOD removal, with global efficiencies ranging from 63-97% and 82-99% respectively (HRT = 9 h). The effluent quality is in compliance with the discharge standards (GD352/05 - NTPA002). The paper also presents laboratory-scale experimentation carried out for the processing of excess biological sludge (stabilization/conditioning, leaching tests) in order to find out its subsequent destination.

scholarly journals Dynamic control of nutrient-removal from industrial wastewater in a sequencing batch reactor, using common and low-cost online sensors

2015 ◽  
Vol 73 (4) ◽  
pp. 740-745 ◽  
Author(s):  
Jan Dries
Keyword(s):  
Activated Sludge ◽  
Nutrient Removal ◽  
Industrial Wastewater ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Low Cost ◽  
Dynamic Control ◽  
Oxygen Demand ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential

On-line control of the biological treatment process is an innovative tool to cope with variable concentrations of chemical oxygen demand and nutrients in industrial wastewater. In the present study we implemented a simple dynamic control strategy for nutrient-removal in a sequencing batch reactor (SBR) treating variable tank truck cleaning wastewater. The control system was based on derived signals from two low-cost and robust sensors that are very common in activated sludge plants, i.e. oxidation reduction potential (ORP) and dissolved oxygen. The amount of wastewater fed during anoxic filling phases, and the number of filling phases in the SBR cycle, were determined by the appearance of the ‘nitrate knee’ in the profile of the ORP. The phase length of the subsequent aerobic phases was controlled by the oxygen uptake rate measured online in the reactor. As a result, the sludge loading rate (F/M ratio), the volume exchange rate and the SBR cycle length adapted dynamically to the activity of the activated sludge and the actual characteristics of the wastewater, without affecting the final effluent quality.

scholarly journals Feasibility of a pulsed sequencing batch reactor with anaerobic aggregated biomass for the treatment of low strength wastewaters

1997 ◽  
Vol 35 (1) ◽  
pp. 193-198 ◽  
Author(s):  
A. G. Brito ◽  
A. C. Rodrigues ◽  
L. F. Melo
Keyword(s):  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Anaerobic Bacteria ◽  
Synthetic Wastewater ◽  
Solid Contact ◽  
Transfer Resistance ◽  
Preliminary Study ◽  
Flow Turbulence ◽  
Low Strength ◽  
Swept Volume

This study concerns an assessment of a SBR operation that associates anaerobic aggregated biomass with a pulsed action during the reaction phase, a system named Pulsed Sequencing Batch Reactor (P-SBR). The system uses a diaphragm pump as a pulsator unit to increase the liquid-solid contact, in order to avoid dead zones and possible external mass transfer resistance. A preliminary study of the operation of the reactor was performed with a low strength synthetic wastewater with a COD near 1000 mg.1−1 and a sub-optimal temperature of 22°C. A removal efficiency of 60-70% was attained after 5 and 6 hours of reaction time. The respective organic loads were 5 – 6 kg COD.m−3. day−1, thus supporting the feasibility of the P-SBR system for wastewater treatment in such conditions. The results also indicate that a ratio of 1.8%o between the swept volume delivered by the pump and the reactor volume was adequate to promote a flow turbulence in the sludge blanket and that a redox potential of near −400 mV was readily created by anaerobic bacteria after the reactor filling step.

scholarly journals Settling properties of aerobic granular sludge (AGS) and aerobic granular sludge molasses (AGSM)

2018 ◽  
Vol 34 ◽  
pp. 02022
Author(s):  
Azlina Mat Saad ◽  
Farrah Aini Dahalan ◽  
Naimah Ibrahim ◽  
Sara Yasina Yusuf ◽  
Siti Aqlima Ahmad ◽  
...  
Keyword(s):  
Industrial Wastewater ◽  
Sequencing Batch Reactor ◽  
Settling Velocity ◽  
Batch Reactor ◽  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
X Ray ◽  
Conventional Activated Sludge ◽  
Physiological Structure ◽  
Granulation Technology

Aerobic granulation technology is applied to treat domestic and industrial wastewater. The Aerobic granular sludge (AGS) cultivated has strong properties that appears to be denser and compact in physiological structure compared to the conventional activated sludge. It offers rapid settling for solid:liquid separation in wastewater treatment. Aerobic granules were developed using sequencing batch reactor (SBR) with intermittent aerobic – anaerobic mode with 8 cycles in 24 hr. This study examined the settling velocity performance of cultivated aerobic granular sludge (AGS) and aerobic granular sludge molasses (AGSM). The elemental composition in both AGS and AGSM were determined using X-ray fluorescence (XRF). The results showed that AGSM has higher settling velocity 30.5 m/h compared to AGS.

scholarly journals Evaluation of technological wastewater treatment solutions for the settlements within the Backo Podunavlje biosphere reserve

2020 ◽  
pp. 47-70
Author(s):  
Jasna Grabic ◽  
Nikola Korac ◽  
Zorica Srdjevic ◽  
Pavel Benka
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetland ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Biosphere Reserve ◽  
Decision Support Tool ◽  
Septic Tank ◽  
Support Tool ◽  
Multidisciplinary Analysis ◽  
Simple Additive Weighting

This paper presents the results of a multidisciplinary analysis and the evaluation of a suitable technological solution for wastewater treatment for the villages Backi Breg and Kolut, belonging to the Backo Podunavlje Biosphere Reserve. The research was structured as a three part methodology. It encompassed: 1) citizens? habits on wastewater production - investigated by analysing septic tank waste water quality; 2) stakeholders? opinion on the most important features which a wastewater treatment facility (WWTF) has to fulfil-analysed by interviewing stakeholders and the application of multi-criteria decision support tool and 3) finding the most suitable location for future WWTF by applying geographic information systems (GIS). The results revealed that sampled wastewaters were in range for municipal wastewaters. The decision-making model, based on simple additive weighting (SAW), was defined to evaluate two possible solutions (constructed wetland and sequencing batch reactor) across six criteria. The model showed that a constructed wetland system is more adequate, in comparison to the sequencing batch reactor. Finally, by overlapping multiple GIS map layers the most suitable area for setting up the WWTF was found. The proposed methodology is especially suitable for application in biosphere reserves, since the link social attitude - natural resources exploitation - nature conservation is the key element for achieving sustainability.

The Application of Sequencing Batch Treatment to an Industrial Wastewater

1985 ◽  
Vol 20 (1) ◽  
pp. 42-53 ◽  
Author(s):  
A. Décréon ◽  
N. Thérien ◽  
J.P. Jones
Keyword(s):  
Industrial Wastewater ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Organic Substrate ◽  
Municipal Sewage ◽  
Organic Loading ◽  
Technical Feasibility ◽  
Receiving Waters ◽  
Batch Treatment ◽  
Direct Discharge

Abstract A laboratory-scale study has demonstrated the technical feasibility of using a sequencing batch reactor to treat the wastewater from the manufacture of shampoo and other personal care products. The results demonstrate that good treatment (90% removal efficiency for organic substrate as measured by TOD) is possible at an organic loading below 0.70 kg TOD/kgVSS/day. Higher ratios provide some treatment but there may some risk of washing out the biomass when the organic loading exceeds 1.4 kg TOD/kg VSS/day. The effluent produced was suitable for discharge to a municipal sewage system or to a polishing pond but not for direct discharge to receiving waters. The treatment was totally adequate when nutrients were kept in the ratio B0D5/N/P of 100/5/1. Results were obtained for a ratio of 100/2.5/0.5 and the system did not adequately remove organic material. The response to an inadequate supply of nutrients was very rapid and the production of biomass was severely affected. The effect of various ways of filling the reactor were investigated but no significant effect was found. Lower temperatures reduced the efficiency of the system.

Treatment of Hypersaline Industrial Wastewater by a Microbial Consortium in a Sequencing Batch Reactor

2004 ◽  
Vol 25 (5) ◽  
pp. 543-553 ◽  
Author(s):  
O. Lefebvre ◽  
F. Habouzit ◽  
V. Bru ◽  
J. P. Delgenes ◽  
J. J. Godon ◽  
...  
Keyword(s):  
Industrial Wastewater ◽  
Sequencing Batch Reactor ◽  
Microbial Consortium ◽  
Batch Reactor
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