This work investigates the coupling of a membrane technique, ultrafiltration, with a recent adsorbent, activated @entity505 cloth for the treatment of industrial highly coloured wastewaters. A first experimental part shows the high treatment ability of this process for fountain-pen inks effluents arising from the rinsing of vats in which inks were produced. Whereas ultrafiltration enables more than 97% of colour removal, COD and @entity4420 are not completely retained and a residual value of 1,700 mg l(-1) of @entity4420 is obtained in the permeate. The second step of the process, activated @entity505 cloth, allows residual organic matter to be removed and a complete discolouring of the permeate. Adsorption capacities of COD and @entity4420 are high, equal to 500 and 250 mg g(-1) respectively. Furthermore, this adsorbent induces a complete removal of @entity47530 compounds (acting as antifreeze) which were not retined by a nanofiltration technique. A second part is an evaluation of the economic feasibility of such an integrated process. Only direct costs are considered at this phase of the study, and are divided into fixed costs (equipment, depreciation, maintenance), variable costs (electricity and consumption) and labour costs. The technical-economic study is carried out for two configurations: a low capacity unit (the UF membrane area is 2.4 m2) and an industrial capacity unit (with a 100 m2 UF membrane). Costs per treated m3 are respectively 111 and 32 @entity7634 , with costs partitioning which are dependent on the unit capacity.

Coupling ultrafiltration with an activated XXXX cloth for the treatment of highly coloured wastewaters: a techno-economic study.

@entity505 :: ('MESH:D002244', 'Chemical') :: ['carbon'] @entity47530 :: ('CHEBI:13643', 'Chemical') :: ['glycol'] @entity4420 :: ('CHEBI:16973', 'Chemical') :: ['DOC'] @entity7634 :: ('9319', 'Species') :: ['euros']
@entity505 :: (MESH:D002244,Chemical) :: ['carbon']
