Download or read book ELIMINATION DU CARBONE ORGANIQUE DISSOUS BIODEGRADABLE PAR FILTRATION BIOLOGIQUE written by LUCIJANE.. MONTEIRO DE ABREU and published by . This book was released on 1994 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS LE DOMAINE DE LA PRODUCTION D'EAU POTABLE, LA FILTRATION SUR CHARBON ACTIF EN GRAINS EST CONNUE POUR SON POUVOIR REDUCTEUR DE LA MATIERE ORGANIQUE DISSOUTE. L'ETUDE PRESENTEE DANS CE MEMOIRE COMPORTE DEUX OBJECTIFS. LE 1ER EST LE DEVELOPPEMENT D'UN MODELE MATHEMATIQUE D'ELIMINATION DU CARBONE ORGANIQUE DISSOUS BIODEGRADABLE AU SEIN DES FILTRES BIOLOGIQUES A CHARBON ACTIF EN GRAINS. LE MODELE BAPTISE MECCA PREDIT LA CONCENTRATION EN MATIERE ORGANIQUE BIODEGRADABLE DANS L'EFFLUENT EN FONCTION DU TEMPS DE CONTACT, DE LA TEMPERATURE ET DE LA CONCENTRATION EN CO DISSOUS BIODEGRADABLE EN AMONT DES FILTRES. CE MODELE A ETE VALIDE PAR DES RESULTATS EXPERIMENTAUX SUR DES FILTRES BIOLOGIQUES A CHARBON ACTIF EN GRAINS A L'ECHELLE PILOTE EN USINE. NOUS AVONS OBSERVE UNE BONNE CORRELATION ENTRE LES VALEURS OBSERVEES ET CALCULEES PAR LE MODELE. LE 2E OBJECTIF PORTE SUR L'OPTIMISATION DU FONCTIONNEMENT DES FILTRES BIOLOGIQUES A CHARBON ACTIF EN GRAINS PAR LA CORRECTION DES CARENCES POTENTIELLES EN C, N, P ET OLIGOELEMENTS SUSCEPTIBLES DE LIMITER LEURS PERFORMANCES. LES ETUDES REALISEES EN LABORATOIRE AVEC DES DIFFERENTES FORMES D'ENRICHISSEMENTS DE L'INFLUENT ONT PERMIS DE MONTRER QU'UNE EAU MIEUX EQUILIBREE EN NUTRIMENTS CONDUIT A: (I) DES VALEURS INFERIEURES A 0,3 MG/L EN CODB DANS L'EFFLUENT DES FILTRES ENRICHIS EN CARBONE PAR UN COMPOSE MODELE (ACIDE SALYCILIQUE) AVEC DES TEMPS DE CONTACT SUPERIEURS A 20 MIN, (II) DES RENDEMENTS D'ELIMINATION IMPORTANTS DE LA FRACTION CARBONEE BIODEGRADABLE, LORSQUE L'INFLUENT EST ENRICHI EN C ET N. POUR DES TEMPS DE CONTACT SUPERIEURS A 15 MIN, UNE VALEUR DE 0,2 MG/L EN CODB DANS L'EFFLUENT EST ATTEINTE, (III) UNE AUGMENTATION MOYENNE DE L'ELIMINATION EN CODB DE 17%, LORSQUE L'INFLUENT EST ENRICHI EN AZOTE

Download or read book Optimizing Filtration in Biological Filters written by Peter M. Huck and published by American Water Works Association. This book was released on 2000 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Enl vement du cob carbone organique biod gradable par la filtration biologique written by Robert George MacLean and published by . This book was released on 1995 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluating Biological Regrowth in Distribution Systems written by Gil F. Crozes and published by American Water Works Association. This book was released on 2000 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biodegradable Organic Matter in Drinking Water Treatment and Distribution written by Michèle Prévost and published by . This book was released on 2005 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compilation covers all aspects of biodegradable organic matter in drinking water by addressing the improvement made to water treatment and quality during the last 20 years. This book is a must for researchers and a valuable reference and guidance tool for all water producers.

Download or read book Canadian Journal of Civil Engineering written by and published by . This book was released on 1997 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pollution Abstracts written by and published by . This book was released on 1993 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indexes material from conference proceedings and hard-to-find documents, in addition to journal articles. Over 1,000 journals are indexed and literature published from 1981 to the present is covered. Topics in pollution and its management are extensively covered from the standpoints of atmosphere, emissions, mathematical models, effects on people and animals, and environmental action. Major areas of coverage include: air pollution, marine pollution, freshwater pollution, sewage and wastewater treatment, waste management, land pollution, toxicology and health, noise, and radiation.

Download or read book Microbiology Abstracts written by and published by . This book was released on 1993 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Research written by and published by . This book was released on 1991 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CONTROLE DE LA MATIERE ORGANIQUE BIODEGRADABLE AU COURS DES TRAITEMENTS D OXYDATION ET DE LA DISTRIBUTION DES EAUX D ALIMENTATION written by CHRISTIAN.. VOLK and published by . This book was released on 1994 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA MESURE DE LA MATIERE ORGANIQUE BIODEGRADABLE, UTILISEE POUR LE SUIVI ET L'EFFICACITE DES FILIERES DE TRAITEMENT ET LA MAITRISE DE LA REVIVISCENCE BACTERIENNE DANS LES RESEAUX DE DISTRIBUTION, PEUT ETRE REALISEE A L'AIDE DE TESTS BIOLOGIQUES BASES SUR L'INCUBATION D'ECHANTILLONS D'EAU EN PRESENCE DE DIFFERENTS TYPES DE MICRO-ORGANISMES. UNE ETUDE METHODOLOGIQUE, PORTANT SUR LA COMPARAISON DE CES DIFFERENTS TESTS A MONTRE QUE LES VALEURS OBTENUES PAR DIVERSES TECHNIQUES ETAIENT BIEN CORRELEES. AU COURS DES TRAITEMENTS D'OXYDATION PAR L'OZONE SEUL OU COUPLE AU PEROXYDE D'HYDROGENE OU A UN CATALYSEUR D'OXYDE DE TITANE, L'OPTIMUM DE FORMATION DE MATIERE ORGANIQUE BIODEGRADABLE A ETE OBTENU POUR DES TAUX DE TRAITEMENT INTERMEDIAIRES ET POUR DES TEMPS DE CONTACTS COURTS. DES OBSERVATIONS DE TERRAIN MENEES SUR UN RESEAU DE DISTRIBUTION ONT MONTRE QUE LA RECROISSANCE BACTERIENNE ETAIT GOUVERNEE PAR TROIS PARAMETRES CLES: LA TEMPERATURE DE L'EAU, LA CONCENTRATION EN RESIDUEL DE CHLORE ET LA TENEUR EN MATIERE ORGANIQUE BIODEGRADABLE. LA REVIVISCENCE BACTERIENNE S'EST ACCOMPAGNEE DE L'APPARITION DE COLIFORMES SUR CERTAINS SITES DU RESEAU DE DISTRIBUTION. L'OBSERVATION DE CES GERMES A ETE FREQUEMMENT ASSOCIEE AU DEPASSEMENT DE SEUILS CRITIQUES POUR LES PARAMETRES TEMPERATURES DE L'EAU, CONSOMMATION DE CARBONE ORGANIQUE DISSOUS BIODEGRADABLE, DENOMBREMENTS BACTERIENS PAR MICROSCOPIE EN EPIFLUORESCENCE ET RESIDUEL DE CHLORE. IL A ETE POSSIBLE DE GRADUER LE RISQUE D'APPARITION DES COLIFORMES PAR COMPTABILISATION DES DEPASSEMENTS DES SEUILS CRITIQUES POUR CES QUATRE PARAMETRES, CORRESPONDANT A DES FREQUENCES CROISSANTES D'ISOLEMENT DE CES GERMES DANS LE RESEAU. CE MODELE DE RISQUE PEUT S'AVERER UN OUTIL EFFICACE POUR LA MAITRISE DE LA QUALITE BACTERIOLOGIQUE DE L'EAU LE LONG DES RESEAUX DE DISTRIBUTION

Download or read book Compte Rendu written by and published by . This book was released on 1992 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book FRACTIONNEMENT ET CARACTERISATION DES MATIERES ORGANIQUES DISSOUTES RESPONSABLES DE LA DEMANDE EN CHLORE ET DU CARBONE ORGANIQUE BIOELIMINABLE DES EAUX DE SURFACE written by AMENEH.. AFCHARIAN and published by . This book was released on 1997 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA PRODUCTION D'UNE EAU BIOLOGIQUEMENT STABLE EST UN OBJECTIF ESSENTIEL POUR AMELIORER LA QUALITE DES EAUX DISTRIBUEES. LA LIMITATION DES PHENOMENES DE CROISSANCE BACTERIENNE DEPEND A LA FOIS DE LA PRESENCE DE MATIERES ORGANIQUES DISSOUTES BIOELIMINABLES (MODB), ET DU MAINTIEN D'UN RESIDUEL DE DESINFECTANT (GENERALEMENT LE CHLORE). CERTAINS COMPOSES ORGANIQUES SONT SUSCEPTIBLES DE REAGIR AVEC LE RESIDUEL DE CHLORE, ET DE PARTICIPER AINSI A SA CONSOMMATION. L'AMELIORATION DE LA CONNAISSANCE DES MATIERES ORGANIQUES DISSOUTES (MOD), BIOELIMINABLES ET CONSOMMATRICES DU CHLORE EST NECESSAIRE AFIN DE DEFINIR DE NOUVELLES FILIERES DE TRAITEMENT CAPABLES DE LES ELIMINER SELECTIVEMENT. L'OBJECTIF DE NOTRE ETUDE ETAIT DONC DE CARACTERISER DU POINT DE VUE PHYSICO-CHIMIQUE, LES MOD BIODEGRADABLES ET CELLES CONSOMMATRICES DU CHLORE, DANS LES EAUX DE SURFACE. LA BIODEGRADATION DES EAUX ETUDIEES S'EST TRADUITE PAR UN ABATTEMENT DE 0,87 A 1,64 MGC/L SOIT 19 % A 39 % DU COD. DES ANALYSES EN PYROLYSE CG/SM, MONTRENT QUE LES BACTERIES AGISSENT PAR ELIMINATION ET/OU TRANSFORMATION DES POLYSACCHARIDES, DES PROTEINES, DES AMINOSUCRES ET DES POLYHYDROXYAROMATIQUES, QUELS QUE SOIENT LEURS POIDS MOLECULAIRES APPARENTS (PMA). AINSI, LES BACTERIES UTILISENT UNE TRES LARGE GAMME DE COMPOSES ORGANIQUES. L'UTILISATION DES RESINES MACROPOREUSES ANIONIQUES POUR FRACTIONNER DES ECHANTILLONS D'EAU DE SEINE (AU PH NATUREL) A REVELE QUE : 40 % A 63 % DU CARBONE ORGANIQUE DISSOUS BIOELIMINABLE (CODB) CORRESPOND A DES COMPOSES ANIONIQUES, ET 20 % A 40 % A DES COMPOSES NEUTRES. LA PARTICIPATION DES COMPOSES CATIONIQUES EST NEGLIGEABLE, AUSSI BIEN EN TERME DE COD QUE DE CODB. UNE RELATION POSITIVE EST OBSERVEE ENTRE LA DEMANDE EN CHLORE (DCL) DES EAUX ET LES TENEURS EN COMPOSES DE TYPES POLYHYDROXYAROMATIQUES ET PROTEINIQUES (PYROLYSE CG/SM). UNE RELATION POSITIVE EST EGALEMENT OBSERVEE ENTRE LA DCL ET DES STRUCTURES INCLUANT DES CARBONES PHENOLIQUES ET ANOMERIQUES (RMN #1#3C). DE PLUS, L'ETUDE CONFIRME QUE L'ABSORBANCE UV A 254 NM ET L'INDICE DE FLUORESCENCE SONT DE BONS INDICATEURS DE LA DEMANDE EN CHLORE DUE AUX MOD DES EAUX DE SURFACE. LES COMPOSES ANIONIQUES ET LES COMPOSES NEUTRES SONT RESPONSABLES RESPECTIVEMENT DE 52 % A 68 % ET DE 15 % A 27 % DE LA DEMANDE EN CHLORE DE L'EAU DE SEINE. LA PARTICIPATION DES MOD A LA DEMANDE EN CHLORE EST INDEPENDANTE DU PMA DES COMPOSES ORGANIQUES. CEPENDANT, LA CONSOMMATION A LONG TERME DU CHLORE EST PRINCIPALEMENT DUE AUX COMPOSES DE PMA SUPERIEURS A 1 000 DALTONS.

Download or read book Urban Drainage written by J. B. Ellis and published by IWA Publishing. This book was released on 2004-03-15 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urban Drainage: A Multilingual Glossary has been written by research engineers and scientists with substantial experience in the urban drainage field. It provides definitive descriptions of urban drainage terms in English, French, Japanese and German, giving guidance on their appropriate usage and context. The glossary also contains many diagrams, tables and technical discussions, and is a very practical tool to facilitate international technical communication in the urban drainage field. Containing well over 850 commonly-used terms in urban drainage, all expressed in a user-friendly manner, the book serves as a valuable resource for both practitioner and academic. Topics covered include: urban hydrology/hydraulics sewerage surface water runoff pollution (groundwater and surface) receiving waters ecology ecotoxicology best management practices urban water resource management Urban Drainage: A Multilingual Glossary represents an initiative of the joint IWA/IAHR Committee on Urban Drainage and has arisen out of the long-standing terminological and tautological difficulties of many terms in common usage within international urban drainage practice. It will be of great use and interest to scientists, engineers and ecologists, professionals and students working in urban hydrology/hydraulics, urban water resource management and regulation, urban planning and ecology.

Download or read book Aqua written by and published by . This book was released on 1987 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International bibliography of periodical literature covering all fields of knowledge written by Otto Zeller and published by . This book was released on 1994 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.

Download or read book Characterization Treatment and Use of Sewage Sludge written by P. L'Hermite and published by Springer. This book was released on 1981-05-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Second European Symposium held in Vienna, Austria, 21-23 October, 1980