Download Environmental Engineering: A Chemical Engineering Discipline by Gunnar Randers (auth.), G. Lindner, K. Nyberg (eds.) PDF

By Gunnar Randers (auth.), G. Lindner, K. Nyberg (eds.)

Chemistry and its items this present day play an enormous position in just about all business ac­ tivities. Chemistry has captured our houses. we're provided with new articles in an ever-increasing flow. New makes use of are being came upon. previous items disappear. carrying on with and quick enlargement is predicted for the chemical in its right feel. the cause of this can be, in fact, that chemistry has created items which meet necessities that we think of pressing or which in several methods make paintings more uncomplicated, and make us extra effective, thereby expanding our way of life in a large experience: when it comes to cash, extra spare time, social protection, greater schooling and higher public overall healthiness companies. yet a excessive way of life additionally implies an exceptional dwelling atmosphere. loads of what has been performed in praiseworthy aspiration of a higher technique of aid and an im­ proved lifestyle has concerned a losing of non-renewable average assets. the goods themselves or their waste items may possibly pose a chance to the targets we're attempting to attain.

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Environmental Engineering, 33-5\. All Rights Reserved Copyright © 1973 by D. Reidel Publishing Company, Dordrecht-Holland 34 PER SOLTOFT 150 109 $ 100 50 1900 1920 1940 1960 Fig. 1. Chemical world production (from Ullman: Encyclopiidie der technischen Chemie, 1970). industrial products contribute to a large extent to the pleasure and comfort of our daily life. It is too one-sided to consider only the inconveniences, and a more balanced view should be taken. But still the pollution must be combatted.

But these treatments of wastes unlike the others in Table V don't reduce the use of natural resources on the raw material side and should be avoided and exchanged for treatment including reuse of wastes represented by the last part of methods in Table V. Some TABLE V Disposal or treatment of wastes 'outside' production process Ocean dumping Landfill Transformation into less dangerous products Use as component in other products Recovery of raw material key component Recovery of primary products Recovery of by-products Use as raw material for secondary processes.

All these tasks are typical chemical engineering problems. Therefore a heavy responsibility rests on the chemical engineers, a responsibility of which most chemical engineers are well aware and for which they are willing to work. The many pollution problems must be taken into consideration when advantages and disadvantages by the operation of a new chemical plant are compared. Most obvious is it that the plant should allow a satisfactory economic result. At the same time it will also contribute to employment and normally it will make available a number of desirable products.

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