By Krishna B. Misra (auth.), Prof. K. B. Misra (eds.)
This e-book presents a holistic view of purifier creation comprising the techniques of environmental security, functionality requirement and monetary rules of producing. The 31 chapters, written via famous specialists of their fields, are equipped into 6 sections overlaying sustainable improvement within the twenty first century, basics of cleanser creation, functionality views, environmental views, monetary views, functionality review and destiny techniques. chosen case reports can assist the pro to use purifier creation applied sciences in his or her practice.
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Extra info for Clean Production: Environmental and Economic Perspectives
Today, the effects of mining on the earth are as destructive as that of natural forces such as erosion. It is not easy to clean up the mineral industry and its legacies since this would involve cleaning up abandoned mineral projects, which often require moving, treating, and conveying huge amounts of material, spread over large areas. Smelting produces a huge quantity of air pollutants and each year it pumps millions of tons of sulphur dioxide and other pollutants into atmosphere. Pollution from smelting has created biological wastelands as large as 10,000 hectares and is a major source of world's acid rain.
The quality of effluent and its damage potential to aquatic life are measured according to a number of criteria such as levels of biological oxygen demand (BOD), chemical oxygen demand (COD), total coliform, ammonia, nitrates, nitrides, surface-active agents, cholisides, flourosides, solvents, phenols, pesticides, fertilizer, suspended solids. In fact, BOD and COD are both the measures of the amount of oxygen required by bacteria in order to oxidise organic pollutants and to make them inoffensive.
Several of these residents were relocated. In 1985, 21512 potentially hazardous landfill sites were discovered in USA, of which 1750 needed immediate remedial measures. In Denmark, 3115. sites containing chemical wastes had been discovered and in 1970 some 50,000 in western Germany 23 alone were identified, of which 5000 needed treatment. At Lekkerkerk village in the Netherlands, the entire village was polluted by aromatic hydrocarbons and the soil had to be removed and replaced. Obviously, in future the global cost of remedial measures is going to be very high, if proper care is not taken.