Influence of Wastewater Composition on the Microbial Communities of Aerobic Granular sludge
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The removal or breakdown of org. compds. from wastewater is an important and integral part of any industrial chem. process. Described here is the electrochem. treatment (or pretreatment prior to biol. treatment) of industrial wastewater (BASF wastewater) c ...
L'adoption par l'Union Européenne de normes de rejets plus contraignantes implique une meilleure gestion des stations d'épuration. L'utilisation de modèles de simulation dynamique dans des schémas de commande en boucle fermée constitue une alternative inté ...
Adverse effects on the environment have become a matter of increasing concern considering the increase of industrialization and of the amount of commercialized chemicals. At present, approximately 100'000 substances are on the market, 3000 are sold at high ...
Stabilization ponds and water lettuce-based systems in West and Central Africa - State of the art, removal performances and design criteria Despite several projects undertaken so far, sanitation remains a huge challenge in West and Central Africa. Big citi ...
A high mol. wt. water sol. acrylamide based polymer having improved flocculating and dewatering properties is provided. The polymer is prepd. by a process in which a small quantity of a chain branching agent is added to the polymn. reaction mixt. continuou ...
(Ecole Polytechnique Federale De Lausanne (Epfl), Switz.).2002
We studied the electrochemical oxidation, on Pt anodes, of industrial wastewaters containing 5-amino-6-methyl-2-benzimidazolone (AMBI). Electrolysis of this non-biodegradable effluent produces simultaneous oxidation of AMBI and chloride ions. Highly oxidat ...
A process for prepg. a water sol. polymer comprises: providing a polymn. reaction mixt. comprising one or more polymerizable ethylenically unsatd. monomers; polymg. the ethylenically unsatd. monomers; and adding to the reaction mixt. during polymn. one or ...
(Ecole Polytechnique Federale De Lausanne (EPFL), Switz.).2002
The use of dynamic optimisation methods to provide optimal operating strategies for small size wastewater treatment plants is investigated. The optimisation objective is to determine the aeration profile (air-on and air-off periods) which minimise the conc ...
Recent research works show that wastewater treatment plants may contribute significantly to the total emission of volatile org. compds. (VOCs) in urban areas. In order to investigate this contribution, a measurement campaign was carried out during Sept., 1 ...
A review without refs. on new concepts for chem. processes such as non-stationary process control, microreactors, and structured packings. Glass fiber catalysts with modified and/or coated surfaces are presented with 2 reactor concepts: packed bubble colum ...