Water Treatment Some Industrial processes can only be carried out with soft water and Industries such as dyeing and bleaching first became established In those areas in which the water is naturally soft. Nowadays, the chemist can make water suitable for almost any Purpose: The origin of water treatment may be traced back to 7 Scots doctor, Thomas Clark, who discovered in the first half of the last century that certain types of hard water could be softened by adding lime ; "Clark' $ Method is still the basis of the lime-soda water tcreatment process which is widely used in Industry today: Since Clark'$ pioneer work, many ocher chemicals have been produced for che creatment of water. In 1938, for example; Iwo British chemists, Adams and Holmes, discovered the value of synthetlc resins for treating water to be used in certain industrial processes~where water of high purity, comparable wich that of distilled water, Is required: One of the greatest, but least known, achievements of the Bricish chemical industry is to treat; every day, thousands of millions of gallons of water used in textile processes, laundries and boilers _ an achleve- ment which saves the community many millions of Pounds annually: British Railways treat between fifty and one hundred million gallons of water 4 day in order to maintain their locomotive boilers in sound con- dition and free from scale. The Bricish chemical industry also provides the housewife with soda crystals and similar alkalis which form the basis of domestic bach salts and water softening compounds: ICI IMPERIAL CHEMICAL INDUSTRIES (N.Z) LTD: TwA A First Aid Dressing ;ELASTIGand 'WALRPRODE thats e DALMAS, a waterproof plastic dressing, provides a totally new method of pro- tecting cuts and minor wounds. You can actually wash, and do any kind of housework with Dalmas on. Edges can � lift, risk of infection is less, healing S promoted. Skin-coloured Dalmas keeps clean, hardly shows: DALMAS HREERPRODF DALMAS 1/3 in blue and white tins from Chemists and Stores A Product of DALMAS OF LEICESTER 20
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https://paperspast.natlib.govt.nz/periodicals/NZLIST19510803.2.10.1
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New Zealand Listener, Volume 25, Issue 631, 3 August 1951, Page 4
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334Page 4 Advertisement 1 New Zealand Listener, Volume 25, Issue 631, 3 August 1951, Page 4
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Copyright in the work University Entrance by Janet Frame (credited as J.F., 22 March 1946, page 18), is owned by the Janet Frame Literary Trust. The National Library has been granted permission to digitise this article and make it available online as part of this digitised version of the New Zealand Listener. You can search, browse, and print this article for research and personal study only. Permission must be obtained from the Janet Frame Literary Trust for any other use.
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