Efficiency of Attached-Growth Sequencing Batch Reactor in the Treatment of Recycled Paper Mill Wastewater

2015 ◽  
Vol 74 (3) ◽  
Author(s):  
Mohd Hafizuddin Muhamad ◽  
Siti Rozaimah Sheikh Abdullah ◽  
Hassimi Abu Hasan
Keyword(s):  
Organic Matter ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Nitrogen Compound ◽  
Oxygen Demand ◽  
Paper Mill ◽  
Organic Load ◽  
Recycled Paper ◽  
Attached Growth ◽  
Paper Mill Effluent

In this study, an attached-growth bioreactor was operated using granular activated carbon (GAC) with additional biomass; and evaluatedits performance in the treatment of real recycled paper mill effluent at chemical oxygen demand (COD) level in the range of 800-1300 mg/L, a fixed hydraulic retention time of 24 hours and COD:N:P ratio of about 100:5:1. A laboratory-scale aerobic sequencing batch reactor (SBR) was used. The efficiency of this biological treatment processwas studiedover a 300-day period, in order to evaluate their performance, especially for the removal of nitrogen compound and of biodegradable organic matter. It has been found that this process was able to remove organic matter (expressed as COD; 91-99%) and turbidity (89-99%) almost completely and simultaneously; the removal of nitrogen (expressed as NH3-N; 70-94%), phosphorus (expressed as PO43-P; 42-71%), suspended solid (81-99%) and colour (72-91%) were sufficiently achieved. The overall performance confirmed that an attached-growth SBR system using additional biomass on GAC is a promising configuration for wastewater treatment in terms of the performance efficiency and process stability under fluctuations of organic load.

Start-up of an aerobic granular sequencing batch reactor for the treatment of winery wastewater

2009 ◽  
Vol 60 (4) ◽  
pp. 1049-1054 ◽  
Author(s):  
S. López–Palau ◽  
J. Dosta ◽  
J. Mata-Álvarez
Keyword(s):  
Organic Matter ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Particle Diameter ◽  
Granular Sludge ◽  
Average Density ◽  
Aerobic Granular Sludge ◽  
Organic Load ◽  
Winery Wastewater ◽  
Start Up

Aerobic granular sludge was cultivated in a sequencing batch reactor (SBR) in order to remove the organic matter present in winery wastewater. The formation of granules was performed using a synthetic substrate. The selection parameter was the settling time, as well as the alternation of feast-famine periods, the air velocity and the height/diameter ratio of the reactor. After 10 days of operation under these conditions, the first aggregates could be observed. Filamentous bacteria were still present in the reactor but they disappeared progressively. During the start-up, COD loading was increased from 2.7 to 22.5 kg COD/(m3 day) in order to obtain a feast period between 30 and 60 minutes. At this point, granules were quite round, with a particle diameter between 3.0 and 4.0 mm and an average density of 6 g L−1. After 120 days of operation, synthetic media was replaced by real winery wastewater, with a COD loading of 6 kg COD/(m3 day). The decrease of the organic load implied a reduction of the aggregate diameter and a density increase up to 13.2 g L−1. The effluent was free of organic matter and the solids concentration in the reactor reached 6 g VSS L−1.

scholarly journals Performance of Modified Anaerobic Hybrid Baffled (MAHB) bioreactor treating recycled paper mill effluent: Effects of organic loading rates

2021 ◽  
Vol 6 (1) ◽  
pp. 15-18
Author(s):  
Siti Roshayu Hassan ◽  
Irvan Dahlan
Keyword(s):  
Hydraulic Retention Time ◽  
Biogas Production ◽  
Oxygen Demand ◽  
Paper Mill ◽  
Organic Loading ◽  
Recycled Paper ◽  
Paper Mill Effluent ◽  
Loading Rates ◽  
Bioreactor System ◽  
Maximum Removal

The performance of modified anaerobic hybrid baffled (MAHB) bioreactor treating recycled paper mill effluent (RPME) was investigated at various organic loading rates (OLR) of 1, 2, 3 and 4 g COD/ L.day. The bioreactor was operated continuously at constant hydraulic retention time (HRT) of a day without effluent recycled and chemicals adjustment/addition. Throughout 70 days of operation, a maximum removal efficiency up to 97% of chemical oxygen demand (COD) and 98% of volatile fatty acid, biogas production of 12.51 L/day equivalent to methane (CH4) yield of 0.108L CH4/ g COD and a stable pH system between 6.6 to 7.2 were achieved. Additionally, alkalinity of the bioreactor system shows a stable profile that indicates the whole system was well buffered with a quit high degradation of volatile solid (VS) up to 18%. These results indicated that MAHB bioreactor has been successfully treated RPME at various OLR.

Organic and nitrogen removal with minimal COD requirement by integration of sequestered denitrification and separate nitrification in a low-loaded activated sludge process

2000 ◽  
Vol 42 (12) ◽  
pp. 65-72 ◽  
Author(s):  
H.-S. Shin ◽  
S.-Y. Nam
Keyword(s):  
Organic Matter ◽  
Activated Sludge ◽  
Electron Donor ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Contact Process ◽  
Oxygen Demand ◽  
Specific Mass ◽  
Film Reactor ◽  
Soluble Chemical Oxygen Demand

A separate sludge system incorporating sequencing batch reactor (SBR) for sequestered denitrification and an immobilized fixed-film reactor for nitrification was investigated in this study. Emphases were placed on the preservation of organic matter as an electron donor for denitrification and the improvement of nitrification efficiency by using an immobilization technique with alginate coating. To preserve organic materials in the sludge required for denitrification, a study was made with a contact process. The contactor, when operated with a short detention time, gave incomplete metabolism of organic matter. With 64% of the influent soluble chemical oxygen demand (SCOD) was adsorbed to activated sludge within 30 min. The specific mass of organic matter uptaken was 55 mg SCOD/g mixed liquor suspended solids (MLSS), which enhanced the denitrification efficiency up to 63% in the following denitrification step. Thus, the required COD in the proposed system can be saved up to 63% as an available electron donor for the conventional aerobic process. The immobilized nitrification unit showed over 90% of nitrate production rate up to 50 mg/l of influent ammonia load.

Removal of COD and Nitrogen in Wastewater Using Sequencing Batch Reactor with Fibrous Packing

1993 ◽  
Vol 28 (7) ◽  
pp. 125-131 ◽  
Author(s):  
H. H. P. Fang ◽  
C. L. Y. Yeong ◽  
K. M. Book ◽  
C. M. Chiu
Keyword(s):  
Chemical Oxygen Demand ◽  
Total Nitrogen ◽  
Retention Time ◽  
Cycle Time ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Loading Conditions ◽  
Attached Growth

An 11-litre sequencing batch reactor (SBR) filled with fibrous packing was found to be very effective for the removal of not only Chemical Oxygen Demand (COD), but also nitrogen from synthetic wastewaters with 250-1034 mg/l of COD and 22-114 mg/l of nitrogen. As compared to the conventional SBR, mis system had a shorter cycle time by skipping the settling step. In addition, denitrification was efficiently conducted in the interior of the ‘bio-pompons', which were formed by the attached growth of biomass on the fibrous packings, even though the bulk of the reactor was under constant aeration. The system was tested at 12 loading conditions, ranging from 0.56 to 4.51 kg-COD/m3-day and from 0.04 to 0.49 kg-NH3−N/m3-day. On average, 95% of COD was removed within 2 h of aeration, while 57% of total nitrogen was removed after a retention time of 4-8 h.

scholarly journals A review on bioremediation of pulp and paper mill effluent – An alternative to conventional remedial technologies

2018 ◽  
Vol 10 (1) ◽  
pp. 367-374 ◽  
Author(s):  
Sangeeta Madan ◽  
Preeti Sachan ◽  
Utkarsh Singh
Keyword(s):  
Biological Treatment ◽  
Oxygen Demand ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Residual Effects ◽  
Organic Load ◽  
Pulp And Paper Mill ◽  
Paper Mills ◽  
Paper Mill Effluent ◽  
Paper Mill Effluents

At present, a large amount of water required for paper production and various chemicals has been identified in effluents, which is produced at different steps of paper making in paper mills. The pulp and paper industry is typically related to pollution difficulties related to high biological oxygen demand (BOD), chemical oxygen demand (COD), colour, suspended solids, lignin and chlorinated compounds. Several studies have been made on eliminate these difficulties of pulp and paper effluents, the problem still continues. Although the physical and chemical methods are on the track of treatment, they are not on par with biological treatment because of cost ineffectiveness and residual effects. The biological treatment is known to be effective in reducing the organic load and toxic effects of paper mill effluents. Some microorganisms including bacteria and fungi have been involved in degrading the chemicals present in pulp and paper mill effluent. This article is an overview of the attempts made by several researchers worldwide to use biotechnological methods for degradation of the toxic compounds present in pulp and paper mill effluents by using fungi, bacteria, algae and enzymes. The current study clearly shows that application of native dominant bacterial and fungal isolates may be used forthe treatment of large pulp and paper mills effluents.

scholarly journals Treatment of UASB-treated recycled paper wastewater using SBR and SBBR: A comparison

BioResources ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. 3473-3486
Author(s):  
Jun Han ◽  
Lirong Lei ◽  
Fangrui Cai ◽  
Youming Li
Keyword(s):  
Batch Reactor ◽  
Oxygen Demand ◽  
Paper Mill ◽  
Anaerobic Treatment ◽  
Biofilm Reactor ◽  
Anaerobic Sludge ◽  
Recycled Paper ◽  
Paper Mills ◽  
Paper Wastewater ◽  
High Chemical Oxygen Demand

Anaerobic-oxic (AO) systems have been extensively adopted for the biological treatment of wastewater from recycled paper mills, which is characterized by high chemical oxygen demand (COD) concentrations and contains hundreds of organic compounds. In this study, an up-flow anaerobic sludge blanket (UASB) served as the anaerobic treatment of recycled paper mill wastewater. Then, either a sequential batch reactor (SBR) or a sequential batch biofilm reactor (SBBR) were adopted as aerobic treatment to treat the UASB effluent respectively. Parameters such as COD, BOD5, and TSS were measured to compare the treatment performance of SBR and the SBBR. After 80 days’ operation, COD removal efficiency of SBR and SBBR were 21.79 ± 3.4% and 38.38 ± 2.69% respectively; TSS removal efficiencies were 20.84 ± 5.15% and 47.02 ± 5.84% respectively. The results indicated that SBR was effective for removing residual organic matter in UASB effluent. However, SBBR showed significant advantages for the removal of COD and total suspended solids (TSS), which are ascribed to the effective biomass retention and biofiltration of SBBR.

Optimization of biological treatment of paper mill effluent in a sequencing batch reactor

2007 ◽  
Vol 34 (3) ◽  
pp. 193-199 ◽  
Author(s):  
Y.F. Tsang ◽  
F.L. Hua ◽  
H. Chua ◽  
S.N. Sin ◽  
Y.J. Wang
Keyword(s):  
Biological Treatment ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Paper Mill ◽  
Paper Mill Effluent

Operating feasibility of anaerobic whey treatment in a stirred sequencing batch reactor containing immobilized biomass

2003 ◽  
Vol 48 (6) ◽  
pp. 179-186 ◽  
Author(s):  
S.M. Ratusznei ◽  
J.A.D. Rodrigues ◽  
M. Zaiat
Keyword(s):  
Sequencing Batch Reactor ◽  
Cheese Whey ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Organic Load ◽  
Agitation Rate ◽  
Mechanical Agitation ◽  
Operating Stability ◽  
Immobilized Biomass ◽  
Startup Period

The scope of this work was to evaluate the operating feasibility of anaerobic whey treatment in a stirred sequencing batch reactor (ASBR) containing biomass immobilized on inert support. Assays were performed using 8-hour cycles and agitation rate of 200 rpm at 30 ± 1¡C, for treating cheese whey containing 500 to 4,000 mgCOD/L, which corresponded to a volumetric organic load (VOL) of 0.81 to 5.7 gCOD/L.d. Stability and high organic matter removal of about 96% were achieved at effluent concentration below 160 mgCOD/L for non filtered samples. Operating stability of the reactor was shown to be strongly dependent on the alkalinity supplementing strategy during the assay, especially during the startup period, where NaHCO3 supplementation was approximately 20Ð30% of the chemical oxygen demand (mgNaHCO3/mgCOD). After startup, alkalinity supplementation could be reduced down to 10% maintaining efficiency and stability. Moreover, proper homogenization of the system through mechanical agitation was also shown to be indispensable, especially with increasing organic load.

Performance and Operational Characteristics of Modified Anaerobic Hybrid Baffled (MAHB) Reactor Treating Low Strength Recycled Paper Mill Effluent (RPME) Wastewater

2014 ◽  
Vol 11 (2) ◽  
pp. 33
Author(s):  
Siti Roshayu Hassan ◽  
Nastaein Qamaruz Zaman ◽  
Irvan Dahlan
Keyword(s):  
Biogas Production ◽  
Oxygen Demand ◽  
Paper Mill ◽  
Gas Production ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Recycled Paper ◽  
Paper Mill Effluent ◽  
Operational Characteristics ◽  
Low Strength

The performance and operational characteristics of a laboratory scale modified anaerobic hybrid baffled (MAHB) reactor were studied using recycled paper mill effluent (RPME) wastewater. MAHB reactor was continuously operated at 35°C for 90 days with organic loading rate (OLR) increased from 0.14 to 0.57 g/L/dy. This present study demonstrated that the system was proficient in treating  low strength RPME wastewater. Highest carbon oxygen demand (COD) removal were recorded up to 97% for an organic loading of 0.57 g /L/dy while effluent alkalinity assured that the system pH in the MAHB compartments were of great advantages to acidogens and methanogens respectively. Methane and biogas production rate shows increment as the load increases, which evidently indicated that the most significant approach to enhance gas production rates involves the increment of incoming substrate moderately. Variations of biogas and volatile fatty acid (VFA) in different compartments of MAHB reactor indicated the chronological degradation of substrate. The compartmental structure of MAHB reactor provided its strong ability to resist shock loads. From this present study, it shows the potential usage of MAHB reactor broadens the usage of multi-phase anaerobic technology for industrial wastewater treatment.

Application of sequencing batch biofilm reactor (SBBR) to recycled paper mill effluent treatment

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Shuangshuang Chen ◽  
Lirong Lei ◽  
Youming Li
Keyword(s):  
Removal Rate ◽  
Oxygen Demand ◽  
Total Suspended Solid ◽  
Paper Mill ◽  
Suspended Solid ◽  
Biofilm Reactor ◽  
Effluent Treatment ◽  
Recycled Paper ◽  
Paper Mill Effluent ◽  
Sequencing Batch Biofilm Reactor

Abstract Paper mill effluent has been characterized as recalcitrant because of containing lignin and its derivatives. Since biofilm system exhibits a notable potential for the removal of recalcitrant contaminants, a sequencing batch biofilm reactor (SBBR) was employed to treat coagulated recycled paper mill effluent in this study. The results indicated that the SBBR removed 91.3 % of chemical oxygen demand (COD), whilst total suspended solid (TSS) and color removal reached 83.1 % and 71.0 %, respectively. The microbial analysis suggested that three typical heterotrophic phyla, Proteobacteria, Bacteroidetes and Acidobacteria are dominant bacteria and reflected the removal of recalcitrant contaminants. The COD removal rate of SBBR is evidently superior to conventional activated sludge process due to high sludge concentration as well as long sludge retention time (SRT). Whilst the problem of sludge bulking can be successfully avoided, the blockage of reactor caused by TSS accumulation and microbial growth deserve further investigation.

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