Assessment of laboratory scale cylindrical sequencing batch reactor for the treatment of abattoir effluent

This Research Communication describes an investigation into the viability of an Intermittently Aerated Sequencing Batch Reactor (IASBR) for the treatment of dairy processing wastewater at laboratory-scale. A number of operational parameters have been varied and the effect has been monitored in order to determine optimal conditions for maximising removal efficiencies. These operational parameters include Hydraulic Retention Time (HRT), Solids Retention Time (SRT), aeration rate and cycle length. Real dairy processing wastewater and synthetic wastewater have been treated using three laboratory-scale IASBR units in a temperature controlled room. When the operational conditions were established, the units were seeded using sludge from a municipal wastewater treatment plant for the first experiment, and sludge from a dairy processing factory for the second and third experiment. In experiment three, the reactors were fed on real wastewater from the wastewater treatment plant at this dairy processing factory. These laboratory-scale systems will be used to demonstrate over time that the IASBR system is a consistent, viable option for treatment of dairy processing wastewater in this sector. In this study, the capacity of a biological system to remove both nitrogen and phosphorus within one reactor will be demonstrated. The initial operational parameters for a pilot-scale IASBR system will be derived from the results of the study.

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Interactions between anaerobic ammonium- and methane-oxidizing microorganisms in a laboratory-scale sequencing batch reactor

Applied Microbiology and Biotechnology ◽

10.1007/s00253-019-09976-9 ◽

2019 ◽

Vol 103 (16) ◽

pp. 6783-6795 ◽

Cited By ~ 4

Author(s):

Karin Stultiens ◽

Simon Guerrero Cruz ◽

Maartje A. H. J. van Kessel ◽

Mike S. M. Jetten ◽

Boran Kartal ◽

...

Keyword(s):

Sequencing Batch Reactor ◽

Batch Reactor ◽

Laboratory Scale

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Biological phosphorus removal from edible oil effluent by anaerobic- aerobic sequencing batch reactor

10.51415/10321/2814 ◽

2004 ◽

Author(s):

◽

Abel Jwili Manganyi

Keyword(s):

Removal Efficiency ◽

Phosphorus Removal ◽

Sequencing Batch Reactor ◽

Batch Reactor ◽

Edible Oil ◽

Laboratory Scale ◽

Biological Phosphorus Removal ◽

Sewer System ◽

Biological Phosphorus ◽

P Removal

The objective of this study was to evaluate the characteristics and treatability of process wastewater from an edible oil refining industry, which discharge its effluent into a sewer system. The main objective was to assess a laboratory scale treatment process that would produce effluent having a regulatory acceptable phosphate concentration (below 20 mgIL) prior to discharge into municipal sewer system. A single stage laboratory-scale anaerobic-aerobic sequencing batch reactor (BPR-SBR) with a total volume adjustable up to 10L was designed for biological phosphorus removal. The BPR-SBR was run at 10 days sludge age, 8 hours hydraulic retention time and organic load of ~ 0.38 kg COD/kg MLSS.d for 158 days to evaluate its performance for bio-P removal efficiency. The BPR-SBR system showed a consistent P removal efficiency of up to 78.40 %, 80.15 % COD and 72.43 % FOG reduction. The laboratory scale study has demonstrated that the SBR technology is suitable for treating wastewater from edible oil producing industry.

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Efficient treatment of dairy processing wastewater in a pilot scale Intermittently Aerated Sequencing Batch Reactor (IASBR)

Journal of Dairy Research ◽

10.1017/s0022029918000596 ◽

2018 ◽

Vol 85 (3) ◽

pp. 384-387 ◽

Cited By ~ 1

Author(s):

Peter Leonard ◽

William Finnegan ◽

Maria Barrett ◽

Xinmin Zhan

Keyword(s):

Retention Time ◽

Sequencing Batch Reactor ◽

High Efficiency ◽

Batch Reactor ◽

Pilot Scale ◽

Laboratory Scale ◽

Aeration Tank ◽

Efficient Treatment ◽

Dairy Processing ◽

Working Volume

This Research Communication describes the initial operation of a pilot-scale intermittently aerated sequencing batch reactor system, which is located at an Irish dairy processing factory. Laboratory-scale research has facilitated the design specifications and operational parameters necessary for the construction and running of a pilot-scale. Laboratory scale research was necessary prior to the pilot scale system to ensure high quality treatment and nutrient removal efficiencies. The pilot system operates with a hydraulic retention time of 4 d, a solids retention time of 16 d and a cycle length of 12 hours. There are 4 non-aeration and aeration phases within the system's react phase. This system has a 3000 l working volume, treating 375 l of wastewater per cycle, 750 l daily. The system was seeded from an aeration tank at the dairy processing factory where the unit is located. The system is operating with the goal to remove both nitrogen and phosphorus from the wastewater biologically, reducing the need for chemical treatment. Currently, the system is performing with high efficiency, treating the wastewater to an acceptable level according to the Irish Environmental Protection Agency for discharge into surrounding water bodies. Therefore, the initial removal results demonstrate this technology's suitability for the treatment of high strength dairy wastewaters.

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Emission of nitrous oxide from high-rate nitrification and denitrification by mixed liquor circulating process and sequencing batch reactor process

Water Science & Technology ◽

10.2166/wst.1997.0428 ◽

1997 ◽

Vol 36 (12) ◽

pp. 39-45 ◽

Cited By ~ 2

Author(s):

Yuji Okayasu ◽

Isaya Abe ◽

Yoshitaka Matsuo

Keyword(s):

Nitrous Oxide ◽

Sequencing Batch Reactor ◽

Batch Reactor ◽

N2o Emission ◽

Laboratory Scale ◽

High Rate ◽

Mixed Liquor ◽

Scale Models ◽

Aerobic Reactor ◽

Volumetric Loading

Laboratory scale models simulating a mixed liquor circulating (MLC) process and a sequencing batch reactor (SBR) process were operated with a high ammonium volumetric loading to study the possible nitrous oxide (N2O) emission from them. The N2O emission from the MLC process was found to depend on the DO level in the aerobic reactor. When the DO level was high, the emission was negligibly small. The SBR reactor emitted N2O in a quantity as high as 40 percent of the removed nitrogen. Most of the emission occurred during the low DO period in the aeration stage.

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