Multimedia-sequencing batch biofilm reactor in treating recycled paper mill effluent containing high level of pentachlorophenol: Long-term performance, mechanism and kinetic studies

2020 ◽  
Vol 37 ◽  
pp. 101522
Author(s):  
Mohd Hafizuddin Muhamad ◽  
Siti Rozaimah Sheikh Abdullah ◽  
Hassimi Abu Hasan ◽  
Siti Nur Hatika Abu Bakar
Keyword(s):  
Kinetic Studies ◽  
Paper Mill ◽  
Biofilm Reactor ◽  
Recycled Paper ◽  
Paper Mill Effluent ◽  
Sequencing Batch Biofilm Reactor ◽  
High Level ◽  
Long Term Performance ◽  
Term Performance

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.

Start-up and long-term performance of anammox moving bed biofilm reactor seeded with granular biomass

Chemosphere ◽  
2018 ◽  
Vol 200 ◽  
pp. 481-486 ◽  
Author(s):  
Maciej S. Kowalski ◽  
Tanner R. Devlin ◽  
Jan A. Oleszkiewicz
Keyword(s):  
Biofilm Reactor ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Start Up ◽  
Granular Biomass ◽  
Long Term Performance ◽  
Term Performance

Simulation of Long-Term Performance of an Innovative Membrane-Aerated Biofilm Reactor

2020 ◽  
Vol 146 (6) ◽  
pp. 04020041
Author(s):  
Zebo Long ◽  
Ali K. Oskouie ◽  
Thomas E. Kunetz ◽  
Jeff Peeters ◽  
Nick Adams ◽  
...  
Keyword(s):  
Biofilm Reactor ◽  
Long Term Performance ◽  
Term Performance

Adsorption of actinides within speleothems

2016 ◽  
Vol 80 (5) ◽  
pp. 765-780 ◽  
Author(s):  
P. Sengupta ◽  
J. Sanwal ◽  
N. L. Dudwadkar ◽  
S. C. Tripathi ◽  
P. M. Gandhi
Keyword(s):  
Valence State ◽  
Experimental Studies ◽  
Distribution Coefficients ◽  
Nuclear Wastes ◽  
Lesser Himalayas ◽  
Safety Assessments ◽  
High Level ◽  
Long Term Performance ◽  
Term Performance

AbstractStalagmites and stalactites, as observed within natural caves, may develop inside geological repositories during constructional and post-operational periods. It is therefore important to understand actinide sorption within such materials. Towards this, experimental studies were carried out with 233U, 238Np (VI), 238Np (IV), 239Pu and 241Am radiotracers using natural speleothem samples collected from the Dharamjali cave of the Kumaon Lesser Himalayas, India. Petrological/mineralogical studies showed that natural speleothems have three general domains: (1) columnar calcite; (2) microcrystalline calcite; and (3) botryoidal aragonite – each with ferruginous materials. Results showed that all domains of speleothems can take up >99% actinides, irrespective of valence state and pH (1–6 range) of the solution. However, distribution coefficients were found to be at a maximum in aragonite for most of the actinides. Such data are very important for long-term performance and safety assessments of the deep geological repositories planned for the disposal of high-level nuclear wastes.

scholarly journals Long-term performance evaluation of an anoxic sulfur oxidizing moving bed biofilm reactor under nitrate limited conditions

2019 ◽  
Vol 5 (6) ◽  
pp. 1072-1081 ◽  
Author(s):  
Ramita Khanongnuch ◽  
Francesco Di Capua ◽  
Aino-Maija Lakaniemi ◽  
Eldon R. Rene ◽  
Piet N. L. Lens
Keyword(s):  
Performance Evaluation ◽  
Biofilm Reactor ◽  
Synthetic Wastewater ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Molar Ratios ◽  
Sulfur Oxidizing ◽  
Long Term Performance ◽  
Term Performance

An anoxic sulfur-oxidizing moving bed biofilm reactor (MBBR) treating sulfur and nitrate-contaminated synthetic wastewater was monitored for 306 days under feed nitrogen-to-sulfur (N/S) molar ratios of 0.5, 0.3 and 0.1.

Doe Progress in Assessing the Long Term Performance of Waste Package Materials

1986 ◽  
Vol 84 ◽  
Author(s):  
A. Berusch ◽  
E. Gause
Keyword(s):  
Site Characterization ◽  
The United States ◽  
High Level Waste ◽  
Design Studies ◽  
Waste Package ◽  
License Application ◽  
High Level ◽  
Long Term Performance ◽  
Term Performance

Summary:Each of the projects has made significant progress toward the eventual operation of a repository for the disposal of high-level radioactive wastes in the United States. Although much has been accomplished, much remains to be done. For example, the Site Characterization Plans for BWIP and NNWSI are nearing completion to be followed by initiation of site characterization activities. The Site Characterization Plan for the selected salt site is scheduled for completion later in 1987. Waste package advanced conceptual design studies are currently scheduled to begin at each project before the end of FY 1987. These efforts will lead to selections of concepts to be detailed in the license application design phase. Compliance with the NRC criteria that require long-term waste package performance will be demonstrated by DOE by performing all of the aforementioned activities. In doing so, the DOE will also be assured that its plan for the safe disposal of high-level waste will be satisfactorily implemented.

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