A laboratory-scale anaerobic-anoxic/nitrification sequencing batch reactor (A2N-SBR) fed with domestic wastewater was operated to examine the effect of varying ratios of influent COD/P, COD/TN and TN/P on the nutrient removal. With the increased COD/P, the phosphorus removals exhibited an upward trend. The influent TN/P ratios had a positive linear correlation with the phosphorus removal effici...

Industrial wastewater discharges often contain high levels of organic matter and nutrients, which can lead to eutrophication constitute a serious hazard receiving waters aquatic life. The purpose this study was examine the efficacy using sequencing batch reactor (SBR) treat high-strength for removal both chemical oxygen demand (COD) nutrients (nitrogen phosphorus). At constant COD concentration...

This study has demonstrated the applicability of a simple technology such as the sequencing batch reactor (SBR), operated with suspended biomass, to the aerobic biodegradation of a highly toxic compound, the pentachlorophenol (PCP). An enrichment of a microbial consortium, originated from the biomass of an urban wastewater treatment plant, was performed and 70 days were sufficient to achieve re...

A modified single sequencing batch reactor (SBR) was developed to remove the nitrogen of the real landfill leachate in this study. To take the full advantage of the SBR, stir phase was added before and after aeration, respectively. The new mechanism in this experiment could improve the removal of nitrogen efficiently by the utilization of carbon source in the raw leachate. This experiment adopt...

A novel wastewater treatment technology, suitable for centralised and decentralised wastewater treatment and known as a pumped flow biofilm reactor (PFBR), has been developed and patented in the National University of Ireland, Galway (NUI Galway). This two-reactor-tank technology has been extensively tested at laboratory-scale and trialled at a number of sites for populations ranging from 15 – ...

Aerobic granular sludge (AGS) with oversized diameter commonly affects its stability and pollutant removal. In order to effectively restrict the particle size of AGS, a sequencing batch reactor (SBR) spiny aeration device was put forward. A conventional SBR (R1) an (R2) treating tannery wastewater were compared in laboratory. The result indicates that from R2 smaller than R1 granulation. spines...

The coffee industry uses large amount of water during various stages of coffee production. Coffee processed by wet method generates large volume of high strength wastewater rich in COD and nutrients hence to comply with stringent environmental regulations and for restoration of safe environment, it has become imperative to find less costly and easily adaptable treatment technology. Coffee pulpi...

background: the disposal the wastewater sugar extraction to the rivers and environment cause contamination and is considered as a threat to the marine life and the environment. thus, treatment of the wastewater is necessary. investigating the reduction of the pollution load of cane industry with anaerobic sequencing batch biofilm reactor (asbbr) in the laboratory scale is the purpose of this st...

Over a period of 227 days properties of activated sludge grown in an sequencing batch reactor (SBR) operated under stable conditions were analyzed. Settling properties (sludge volume index (SVI)) of the activated sludge were compared with on-line measurements of floc size and size distribution obtained by using a laser light scattering technique (Malvern Mastersizer/S, Malvern, UK), and with me...

The objectives of this study are to evaluate the efficiency of removal of hexavalent chromium (Cr(VI)) in a sequencing batch reactor (SBR) and to ascertain the fate of Cr(VI) in the treatment process. An SBR was operated with the FILL, REACT, SETTLE, DRAW and IDLE periods in the time ratio of 2:12:2:1.5:6.5 for a cycle time of 24 h. The study was divided into 5 phases with the addition of 0.5, ...