Status of air pollution caused by coal washery projects in India

被引：34

作者：

Ghose, MK

Banerjee, SK

机构：

[1] Centre of Mining Environment, Indian School of Mines, Dhanbad

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 1995年 / 38卷 / 01期

关键词：

D O I：

10.1007/BF00547129

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The importance of coal washeries in India is growing as local coals have a high ash content. At present, there are 23 coal washeries with an annual rated input of 45 Million Tonnes. During the various operations in washeries, large amounts of dusts and gaseous pollutants are generated. Four coal washery projects were surveyed to study their air pollution characteristics. Air monitoring stations were set up in local industrial, residential and sensitive areas and air pollution samples were collected along with micro-meteorological data. Diurnal variations of SPM, SO2 NOx and CO are discussed. SPM concentrations were found to exceed the permissible limits at all locations. SO2 and NOx were also found to exceed the permissible limit in residential and sensitive areas. It was observed that about 50% of the dust particles were less than 10 mu in diameter. Benzene soluble matter in SPM ranged from 45-62%.

引用

页码：97 / 105

页数：9