Method of reducing water consumption in textile

Study On Reducing Water Consumption In Textile... As a result waste water is increased makes water pollution and thus the amount of this vital resources is reduced... Batch Dyeing; 50%Pr

Study On Reducing Water Consumption In Textile

Total Textile Process at a Glance

Water is very important resources in our Ecology We use this resource in different purposes In textile, water is a part & parcel component without this nothing can be dyed properly We use a huge quantity of water in dyeing section As a result waste water is increased makes water pollution and thus the amount of this vital resources is reduced.

Batch Dyeing; 50%

Preparation; 27%

Finishing; 13%

Boilers; 10%

Usage of Water In Textile

Batch Dyeing Preparation Finishing Boilers Pie Graph Of Water Uses In Textile

Water Resources are limited and we need to handle them reasonably and responsibly The environmental impact of textile production is considerable due to the vast quantity of water required and the variety of chemicals used that generates waste Therefore, Water consumption Should be reduced in textile.

Why Water Consumption Should be Reduced ?

 Compressed & Pressurized CO2 Dyeing

Methods Of Reducing Water Consumption

Bio-Scouring Method

With pectinases(enzyme) have shown promise in replacing the traditional alkakine scouring treatment Some auxiliaries’ suppliers have introduced an enzymatic process to remove hydrophobic and other non-cellulosic components forn cotton The new bio-scouring process operates at mils pH conditions over

a broad temperature range and can be applied using equipment such as jet machines It is claimed that, due to a better bleach ability of enzyme-scoured textiles, bleaching con be carried out with reduced amounts of bleaching chemicals and auxiliaries Bio-scouring enzymes actually make the substrate more hydrophilic (which could explain better bleach ability), but they are not able to destroy wax and seeds which are therefore removed in the subsequent bleaching process There is no need for the use of caustic soda in enzymatic scouring So this process reduced pollution loads, high TDS, BOD and COD in the effluent

Working Procedure Of Bio-Scouring

Bio-Scouring

A solvent dye is a dye soluble in organic solvents It is usually used as a solution in an organic solvent Solvent dyeing is a dyeing process carried out from a continuous non-acqueous phase Here solvent is used as dyeing media But water may

be added to assist dyeing process Since the introduction of hydrophobic fibers like cellulose acetate in 1920’s solvent have been considered for Dyeing because it was not possible to dye such Fibres with ionic dyes and water.

Solvent Dyeing Method

Some solvents of chlorinated hydrocarbons of aliphatic series posses most of the mentioned requirements and hence are being used as solvents are extensively used such as –

1 Tri-chloro Ethylen (TCE).

2 Per-chloro Ethylen (PCE).

Air Dye technology manages the application of color to textiles without the use of water.[1] It was

developed and patented by Colorep, a California-based sustainable technology company [2] The process

of making textiles can require several dozen gallons of water for each pound of clothing [3] The Air Dye process employs air instead of water to help the dyes penetrate fibers, a process that uses no water and requires less energy than traditional methods of dyeing, The technology works only on Synthetic

material and is currently available only in the United States.

Airflow Dyeing Method

Airflow Dyeing Machine

Super Cretical Fluid Dyeing Machine

Evaporate Curve

Gas

Super Cretical Fluid Dyeing Machine

AirDye® Technology

AirDye Solids AirDye Singles AirDye Wovens AirDye Contrast

AirDye Solids dyes both sides of a fabric a single

Print-to-Solid AirDye Imprints Print-Contrast Print-Squared

Print-to-Solid prints one side of fabric and dyes

1. Water and Chemical (Disperse agent, Leveling agent, and RC agent) is needlessness

2. Drain treatment and Dryer is needlessness

3. CO2 is possible for recovery use(Recovery Rate 96%)

4. From these merits, we can say that Super- critical Dyeing and Treatment contributes to the environmental damage and it is not influenced by water resources

5. 43% of energy reduction is possible

Low liquor ratio based dying machine

Plasma, as a very reactive material, can be used to modify the surface of a certain substrate (typically known as plasma activation or plasma modification), depositing chemical materials (plasma polymerisation or plasma grafting) to impart some desired properties, removing substances (plasma cleaning or plasma etching), which were previously deposited on the substrate (Pane, et al 2001)

Plasma Dyeing Method

Principle of plasma processing

Various application of plasma in textile.

Various plasma technologies used in textile

# Products that can bring the desired effect using fewer amount of chemical

# Solutions that increase the efficiency of a process resulting in saving water and energy, as well as time and costs

What BASF offers

Eco-efficient Solutions

Cyclanon® XC-W New: After-soaping agent for reactive-dyed cellulose fibers Compared to the conventional process, it considerably shortens the processing time, saving both water and energy.

Helizarin® ECOSOFT Printing System:

Eco-efficient pigment printing solution that significantly reduces the consumption of water and energy compared to reactive printing due to its shorter processing time.

Chinese manufacturer Esquel has performed several trials incorporating Novozymes’ enzyme-based solution known as elemental textiles In the LCA, for the concept in use Esquel reported savings of 30 m3 (or 30 tons) of water per ton of knitted fabric in just a single bleaching process when substituting enzymes for chemicals.

Water-friendly enzymes enter the fashion world

Clear benefits of using enzymes

Eco-efficient Solutions

Cyclanon® XC-W New: After-soaping agent for reactive-dyed cellulose fibers Compared to the conventional process, it considerably shortens the processing time, saving both water and energy.

Helizarin® ECOSOFT Printing System:

Eco-efficient pigment printing solution that significantly reduces the consumption of water and energy compared to reactive printing due to its shorter processing time.

Reducing Water Consumption

– Right first time

– Best available technology

– Re-cycling

– Liquid carbon dioxide

– Marginalisation of cotton (Kyoto style targets)

– Product labelling based on facts not hype

• Water ‘use’ is not always an issue

• Pollution is the major issue

• Energy use associated with water use is a major issue

• Focus on industry not domestic

• Best practice could halve water consumption in dyeing

1 Yarn Manufacturing Technology