Tiruchirapalli

Replace sodium chloride with potassium chloride, textile industry told

The Cauvery Delta Farmers Welfare Association has urged the textile industry to probe the use of potassium chloride and potassium sulphate instead of sodium chloride for textile dyeing process in a bid to reduce damage to water sources, agriculture land and crops raised on them.

Dyers of textile related industries mostly use sodium chloride (common salt) for colouring and bleaching purposes. In the Tirupur and Karur belt that has more than a thousand dyeing and bleaching units around 800 tonnes of sodium chloride is being dumped and washed off in an estimated seven crore lakh litres of water that mostly finds its way to the water sources and bodies including Rivers Noyyal, Amaravathy and Cauvery.

Even if they all were to be treated and then let out, the effluent mixed water spoils the ecology irreversibly altering the nature of the land, its users and water and its consumers including men and livestock. Agriculture suffers at the hands of the polluters and farmers are put to great hardships.

Though efforts are being made to reduce the level of assault on nature and ecology following strict court directives and guidelines by governmental agencies, the environment is being badly mauled and wrecked due to incessant dyeing and bleaching using harmful chemicals, according to the Working president of the Association Mahadanapuram V.Rajaram.

It was in these circumstances that efforts need to be found so that nature is not disturbed, textile related activities go on without any hazard and farmers can live peacefully carrying out their activities, Mr.Rajaram has observed in a press release issued here on Monday. Recent studies have shown that using potassium chloride and potassium sulphate instead of sodium chloride for textile and yarn dyeing purposes would greatly reduce the harm caused by chemical dyeing process.

While the permeability of the yarn and textile increases by 10 to 15 per cent by using potassium chloride and potassium sulphate the cost was also bound to go up by 50 per cent at least for the dyers. However, seen from the ecological perspective and the need to preserve nature besides taking into account the cost of recovered dissolved sulphate and chloride deposits, the idea of giving the process a try was not out of place, Mr. Rajaram has observed.

Potassium chloride and Potassium sulphate are good manure for the fields and do not harm earth and environment. Fertility is increased and plants get good chemicals that do not harm the bio organisms present in the soil, Mr. Rajaram has said adding the effluent mixed water would enrich the soil rather than get degraded when sodium chloride is used.

While textile related dyeing and bleaching activities could be carried on without affecting environment, farming too could flourish without the trouble of pollution in the fertile regions of the State. Both farmers and industrialists would gain in adopting such technologies, Mr. Rajaram has said.

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Printable version | Mar 7, 2021 3:03:01 AM | https://www.thehindu.com/news/cities/Tiruchirapalli/Replace-sodium-chloride-with-potassium-chloride-textile-industry-told/article14938096.ece

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