Effect of inoculum to substrate ratio on the performance of modified anaerobic inclining-baffled reactor treating recycled paper mill effluent

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.

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Effect of temperature on compartmental profile of solid content in a modified anaerobic inclining-baffled reactor treating recycled paper mill effluent

10.1063/1.5117125 ◽

2019 ◽

Author(s):

Haider M. Zwain ◽

Saba A. Alzubaidi ◽

Zahra A. Kheudhier ◽

Irvan Dahlan

Keyword(s):

Paper Mill ◽

Solid Content ◽

Effect Of Temperature ◽

Recycled Paper ◽

Paper Mill Effluent

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

Jurnal Teknologi ◽

10.11113/jt.v74.4557 ◽

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.

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