Effluent disposal-reduction of chemical sludges and biological disposal thereof

The author describes some procedures applied to dispose or recover sludges from sewage disposal plants using chemical technologies of industrial waste water purification.

Colur in textile effluents - the origins of the problem

The potentail restrications of the discharge of coloured effuent has generated a great deal of work on decolorization technology, but the problem has not been fully defined, let alone measured. Here, theoretical models, worst case scenarios and actual measureements of colour in effluent are given.

Laboratory apparatus for dyeing textile fabrics

The claim is for an improved sample holder for use with a laboratory dyeing apparatus of the type in which fabric samples are dyed in acylindrical vessel containing dyeing liquor whilst being moved in a cyclical fashion. The sample holder comprises a vertical rod for connection to an overhead stirrer. The improvement comprises two spaced ..

Dyeing Process

a process for dyeing a polyester/cellulosic or a nylon/cellulosic substrate with at least one disperse dye and at least on metal-complex dye selected from direct dyes and reactive dyes is characterized in that dyeing is carried out in the presence of a compound of specified composition. IPC D06P.

Formic solution

This study compares some applications fo formic and acetic acid in the textile industry. the tests showed no significant differences between the acids used when the tests were carried out under the same pH conditions. The results of the tests also show that the same pH valus (below 4.0) can be obtained using at least half as much 85％ for..

Future-orientated technology in the laboratory dyehouse

The adoption of an Automated Laboratory Dyeing System (Aladys) by Ciba (Switzerland) is reviewed. The system was developed to improve the accuracy and reproducibility of dyeings in the company's laboratory. Software and hardware aspects of the system are described. Ways in which the precise winding of textile material and accurate dispens..

The Datacolour system for colour control is operating successfully at Ciba in Chile

The Ciba Laboratory in Chile, established in 1962, is a major supplier of the dyes-used in the country's textile industry. A Datatcolor Texflash spectrophotmeter and Iris software were instlalled in 1990 for quality control and colour correction, together with Ahiba machinery for laboratory dyeing.

Colur management in laboratory and dye works

The paper describes a computerized system of colur management for use in the labortaory and dye works. The system - Futurama - comprises three lines of operation: automatic dosage in the labroatory; automaitc dosage in industry; and electonic control and running of the dyeing machine. The automated preparation and measurement of the dye s..

Dyeing Part 3. Testile Processing.

The textile industry consumes about 90,000 tons of dyes per year, mostly disperse dyes, to dye polyester. Disperse dyes based on teh azo chromophore dominate the market. Continuous or themosol dyeing is used for blends of polyester and cellulosic fibers. Exhaust batch dyeing is used for polyester and its blends with wool. A more recently ..

Colorimetric Recipe Calculation for Polyester Dyeings Against the Background of the Absorptio Behavior of Dyestuffs in Trichromaticites.

Sample dyeing of polyester with disperse dyes is frequently necessary prior to production dyeing to ensure the accuracy and reproducibility of the color. Even when the dye formula has been calculated via colorimetry, dyes used in dark shades, low concentrations, and/or in trichromaticites tend to be problematic, particularly in evaluating..