Environmental harms of stone crushers
Application of emission reduction systems are associated with both beneficial and adverse impacts on air, water, solid waste, energy and noise that may be directly or indirectly attributed to the operation of these emission control systems.
a) Impact on Air
Impacts on air emissions associated with the application of the alternative emissions reduction systems for the control of particulate emissions from both process and fugitive dust sources are discussed here. Because emissions form fugitive dust sources are typically large in area and are discharged directly to the atmosphere in an unconstrained manner rather than through a stack, such a quantitative measurement of these emissions is considered to be difficult, if not impossible. Similarly because of the nature of wet dust suppression systems, no data are available that permit a quantitative comparison of the control capabilities of wet systems versus dry collection systems on process sources.
Typically the uncontrolled emissions from 200 to 600 tons/hr. crushers range between 1000 to 3000 kg./hr which after reduction by over 99% in dry type collection systems such as bag filters reduce to as low as 3 to 6 kg/hr
b) Impact on Water Pollution
Dry collection control techniques generate no water effluent. When wet dust suppression techniques are used, the water is absorbed by the material processed and therefore, does not produce any water effluent either. The application of air pollution control technology in the stone crushers has little impact on water quality. As the professional manufacturer of complete sets of mining machinery, such as spiral separator, Henan Hongxing is always doing the best in products and service.
c) Impact on Solid Waste Disposal
The method of disposal of quarry, plant and dust collector waste materials depends somewhat upon state and local government and corporate policies.
When dry type bag filter systems are used, the solid waste (dust) collected can be sold or used for a variety of purposes. Collected fines are sometimes disposed of in an isolated location in the quarry if no market is available which generally in the range of 0.5% of the total production. If such waste piles are properly controlled by any of the techniques discussed above, no subsequent air pollution problems develop. Thus, the solid waste generated by the application of dry collection methods can be dispersed without any adverse impact on the environment. When wet dust suppression is used, no solid waste disposal problem results over that produced by normal operation.
d) Impact on Energy Consumption
Application of the alternative control techniques in stone crushers necessarily results in an increase in energy consumption over that required to operate a plant without air pollution control.
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