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Danish experience. Best Available Techniques – BAT - in the clothing and textile industry

Summary

This BAT-report is divided into 4 main parts:

  1. Cleaner Technology in pigment printing.
  2. Cleaner Technology in reactive dyeing of cotton.
  3. Cleaner Technology – chemical savings and substitutions.
  4. Cleaner Technology in enzymatic desizing.

In each main part, several Cleaner Technology options are described and evaluated according to the BREF-standard received from the IPPC bureau. In addition, the Cleaner Technology options are evaluated according to the definition of "Best available techniques" in the IPPC directive (Council directive 96/61/EC of 22 September 1996), Article 2 (11) and ANNEX IV.

An overall summary of the evaluation of the options can be found in Table A below.

Options that for different reasons at present have been evaluated to be a BAT are so marked in the table. Options that for different reasons at present have been evaluated to be a potential future BAT are marked under the heading Emerging-BAT.

For details, refer to the descriptions of the options in the report.

Table A
Evaluation of CT-options.

Head-title

Overall sub-titles

Cleaner Technology options, titles

Evaluation

BAT

Emerging- BAT

1. Cleaner Technology in pigment printing.

1.1. Reduction in water consumption in cleaning operations.

 

 

 

 

 

A) Start/stop control of cleaning of the printing belt.

X

 

 

 

B) Mechanical removal of printing paste.

X

 

 

 

C) Reuse of the cleanest part of the rinsing water from the cleaning of the squeegees, screens and buckets.

X

 

 

 

D) Reuse of the rinsing water from the cleaning of the printing belt.

X

 

 

1.2. Reduction in consumption of printing paste.

 

X

 

2. Cleaner Technology in reactive dyeing of cotton.

2.1. Recipe optimisation.

 

 

 

 

 

A) Change from overflow rinsing to stepwise rinsing.

X

 

 

 

B) Omit the use of detergents in the rinsing after reactive dyeing of cotton.

X

 

 

 

C) Omit the use of complexing agents in the rinsing after dyeing.

X

 

 

 

D) Use only neutralisation after dyeing when using VS reactive dyestuffs.

X

 

 

 

E) Chemical-free high speed rinsing after reactive dyeing of cotton.

 

X

 

2.2. Reclamation and reuse of chemicals, energy and water.

 

 

 

 

 

A) Reclamation and reuse of dyebath and first rinse by activated carbon.

 

X

 

 

B) Reclamation and reuse of rinsing water after dyeing by membrane filtration.

 

X

3. Cleaner Technology – chemical savings and substitutions.

 

 

 

 

 

3.1. Implementation of a score system for sorting of chemicals and dyestuffs on Basis of Environment Data and Information on Consumption.

 

X

 

 

3.2. Chemical savings.

 

 

 

 

 

A) Collection and re-use of after-treatment chemicals in finishing.

X

 

4. Cleaner Technology in enzymatic desizing.

 

 

 

X

 

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