The performance of a submerged membrane bioreactor for the duty of gas field produced water treatment was appraised. The system was operated under steady state conditions at a range of mixed liquor suspended solids (MLSS) concentrations and treatment and membrane performance examined. Organics removal (COD and TOC) display removal rates between 90 and 97%. Removal of specific target compounds Benzene, Toulene, Ethylbenzene and Xylene were removed to above 99% in liquid phase with loss to atmosphere between 0.3 and 1%. Comparison of fouling rates at a number of imposed fluxes has been made between long term filtration trials and short term tests using the flux step method. Produced water fed biomass displays a greater fouling propensity than municipal wastewater fed biomass from previous studies. Results indicate an exponential relationship between fouling rate and flux for both long and short term trials, although the value was an order of magnitude lower during long term tests. Moreover, operation during long term trials is characterised by a period of pseudo stable operation followed by a catastrophic rise in TMP at a given critical filtration time (tfi, ) during trials at 6 g. L"1. This time of stable operation, tfit, is characterised by a linear relationship between fouling rate and flux. Results have been compared with the literature. Data for membrane fouling prior to the end of t fit yielded a poor fit with a recently proposed model. Trends recorded at t> trlt revealed the fouling rate to follow no definable trend with flux. The system showed resilience to free oil shocking up to an oil concentration of 200ppmv. Following an increase in oil concentration to 500 ppmv, rapid and exponential fouling ensued.

Comment appréhender le sens socio-politique de l'officialisation de la catégorie d'inspiration démographique « immigré » dans le cadre du lancement de la politique d'intégration au début des années 1990 ? Telle est question à laquelle cette thèse s'efforce de répondre au travers d'une sociologie foucaldienne de la quantification de l'immigration en tant que population. Ce travail en vient ainsi notamment à formuler l'hypothèse selon laquelle l'enrôlement du savoir démographique participe, dans le cadre du travail de réorganisation de la production des statistiques publiques en matière d'immigration entrepris entre 1990 et 1997 au sein du groupe « Statistiques » attaché au HCI (Haut Conseil à l'intégration), à la formalisation statistique d'une représentation cognitive de l'immigration en tant que séries d'agrégats totalisés et temporalisés d'individus par et dans leur mobilité juridico-légale. Replaçant notamment le processus de mise en catégorie de l'« immigré » en vis-à-vis de l'élaboration d'une méthode comptable de mesure des flux annuels d'immigrations et des tentatives de pré-formater l'exploitation d'AGDREF (Application nationale pour la gestion des dossiers des ressortissants étrangers en France du ministère de l'Intérieur), cette recherche suppose et propose de substituer à l'analyse du processus socio-historique d'objectivation du critère de l'« origine », celle des logiques dispositives de sécurisation (statistique) des flux. / What is the socio-political meaning of the category of “immigrant” that the French integration policy officialised in 1990? The thesis uses a foucaldian sociology of quantification of immigration as a population to answer this question. The mobilization of a demographic knowledge, in the context of the reform of immigration statistics by the “Statistic” Group of the HIC between 1990 and 1997, leads to the formalization of a cognitive representation of immigration, as series of totalized and temporalized aggregates of individuals, from and in their juridical and legal mobility. In particular, we compare the process of categorization of the “immigrant” to a calculative method measurement of annuals flows of immigrations, as well as to the attempts to format the processing of AGDREF. This allows to switch from the analysis of socio-historical processes that objectivates the “origin” criteria, to an analysis in terms of (statistical) securitization of flows.

Made available in DSpace on 2014-10-09T12:31:18Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:00:02Z (GMT). No. of bitstreams: 1 01382.pdf: 1324582 bytes, checksum: a13259f739e3877599333a2bd263f765 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

Made available in DSpace on 2014-10-09T12:29:17Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:00:50Z (GMT). No. of bitstreams: 1 01343.pdf: 8187182 bytes, checksum: 1a795b521139f6efcc47c46e35075982 (MD5) / Dissertacao (Mestrado) / IEA/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

Made available in DSpace on 2014-10-09T12:31:43Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:00:31Z (GMT). No. of bitstreams: 1 02573.pdf: 3007952 bytes, checksum: c5ad0aa94fbfe8573f958b6952ebfe9e (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

Made available in DSpace on 2014-10-09T12:30:08Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:04:06Z (GMT). No. of bitstreams: 1 00373.pdf: 1796905 bytes, checksum: 6355b89cc4907b0f691cdfa33e5172a1 (MD5) / Dissertacao (Mestrado) / IEA/D / Escola Politecnica, Universidade de Sao Paulo - POLI/USP

Made available in DSpace on 2014-10-09T12:29:57Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:04:33Z (GMT). No. of bitstreams: 1 00375.pdf: 1373906 bytes, checksum: 2e14ea2bf8e68072b6b37c2d69c48777 (MD5) / Dissertacao (Mestrado) / IEA/D / Instituto de Energia Atomica - IEA

Made available in DSpace on 2014-10-09T12:27:52Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:04:48Z (GMT). No. of bitstreams: 0 / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

Made available in DSpace on 2014-10-09T12:23:47Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:06:34Z (GMT). No. of bitstreams: 1 01130.pdf: 682173 bytes, checksum: 29e0e663ccc9f3c06e833bc806ed4c26 (MD5) / Dissertacao (Mestrado) / IEA/D / Escola Politecnica, Universidade de Sao Paulo - POLI/USP

Made available in DSpace on 2014-10-09T12:54:44Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:09:28Z (GMT). No. of bitstreams: 0 / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energéticas e Nucleares - IPEN/CNEN-SP