PMID- 18653933 OWN - NLM STAT- MEDLINE DCOM- 20081231 LR - 20141120 IS - 0273-1223 (Print) IS - 0273-1223 (Linking) VI - 58 IP - 1 DP - 2008 TI - Comparison of bioreactors with different kinds of submerged packed beds for domestic wastewater treatment. PG - 29-36 LID - 10.2166/wst.2008.321 [doi] AB - The performance of aerobic submerged packed bed reactors was studied for the treatment of domestic wastewater using different kinds of packing materials with high specific areas (760-1,200 m(2)/m(3)). The tested materials were ceramic spheres, crushed tezontle, grains of high density polyethylene (HDPE), of low density polyethylene (LDPE) and of polypropylene (PP), cubes of polyurethane (PU) and polyethylene tape (SESSIL). The bioreactors were operated in continuous regime, applying organic loads in the range of 0.8-6.0 g COD.m(-2).d(-1). The obtained specific COD removal rates were very similar in all the reactors when they were operated at organic loads up to 2.0 g COD.m(-2).d(-1), after which differences in effectiveness appeared and the best results were determined in the reactors with SESSIL, LDPE and PU. Very low TSS, O&G and turbidity were obtained in all the effluents. The NH(3)-N and TN removals were dependent on the dissolved oxygen (DO) concentration and the removals at DO of 5 mg/l were 84-99% and 61-74% respectively. The best removals were determined in the reactors with PU, SESSIL and LDPE. The reactor with tezontle had also a good performance when operated with loads up to 1.0 g TN.m(-2).d(-1). The best phosphate removals (38-49%) were obtained in the reactors with PU, tezontle, ceramic sheres and SESSIL. CI - (c) IWA Publishing 2008. FAU - Nacheva, P Mijaylova AU - Nacheva PM AD - Mexican Institute of Water Technology, Paseo Cuauhnahuac 8532, Col. Progreso, Jiutepec, Morelos, Mexico. petiam@tlaloc.imta.mx FAU - Moeller Chavez, G AU - Moeller Chavez G FAU - Bustos, C AU - Bustos C FAU - Garzon Zuniga, M A AU - Garzon Zuniga MA FAU - Hornelas Orozco, Y AU - Hornelas Orozco Y LA - eng PT - Journal Article PL - England TA - Water Sci Technol JT - Water science and technology : a journal of the International Association on Water Pollution Research JID - 9879497 RN - 0 (Industrial Waste) RN - 0 (Polypropylenes) RN - 0 (Polyurethanes) RN - 0 (Sewage) RN - 0 (Waste Products) RN - 0 (Water Pollutants, Chemical) RN - 27YLU75U4W (Phosphorus) RN - 9002-88-4 (Polyethylene) RN - N762921K75 (Nitrogen) SB - IM MH - Biomass MH - Bioreactors/*classification MH - Environmental Restoration and Remediation/methods MH - *Industrial Waste MH - Mexico MH - Nitrogen/isolation & purification MH - Phosphorus/isolation & purification MH - Polyethylene MH - Polypropylenes MH - Polyurethanes MH - Sewage MH - Waste Disposal, Fluid/*methods MH - *Waste Products MH - Water Pollutants, Chemical MH - Water Purification/methods EDAT- 2008/07/26 09:00 MHDA- 2009/01/01 09:00 CRDT- 2008/07/26 09:00 PHST- 2008/07/26 09:00 [pubmed] PHST- 2009/01/01 09:00 [medline] PHST- 2008/07/26 09:00 [entrez] AID - 10.2166/wst.2008.321 [doi] PST - ppublish SO - Water Sci Technol. 2008;58(1):29-36. doi: 10.2166/wst.2008.321.