ENVIRONMENTAL IMPACT ASSESSMENT OF BUILDING MATERIALS MANUFACTURING MICROCALCITE, GYPSUM AND BUILDING POWDERS

Alieva Rena A’zer kizi

doi:10.17605/OSF.IO/3KYJ9

Authors

Alieva Rena A’zer kizi Senior teacher, of the Jizzakh Polytechnic Institute, Department of Chemical Technology

DOI:

https://doi.org/10.17605/OSF.IO/3KYJ9

Keywords:

emission, near-permissible concentration, dust, pollutants, stationary source, near-permissible emission, atmospheric layer, dust and gas treatment plants (PGOU).

Abstract

In the production of building materials such as micro calcite, gypsum, dry building mixtures, inorganic dust, gypsum dust, micro calcite dust, carbon monoxide, nitrogen oxides, sulfur dioxide and benzo (a) pyrene are generated and are released into the atmosphere. In order to reduce emissions of pollutants into the atmosphere, it is advisable to install modern equipment in the workshops, highly efficient industrial filters and other dusty gas cleaning plants. The concentration of inorganic dust in the air emitted into the atmosphere from the main workshop of the plant for the production of micro calcite, gypsum and dry mix, before entering the treatment plant, was 746.4-932.4 mg / m3. After collecting dust in the electrostatic precipitator installed in the shop, the proportion of dust in the air was 46.6-152.6 mg / m3, the efficiency of the dust-trapped installations was 92.2-94.0%. This showed that the concentration of dust after cleaning in the installations did not exceed the maximum permissible concentration and do not have a negative impact on people and other living organisms.

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