Dangerous enterprises and their affect on the Lake Baikal environmental area

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Dangerous enterprises and their affect on the
Lake Baikal environmental area

• Sirina Nataliya
• Irkutsk State University

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Objectives

• consider environmental situation in Shelekhov
• calculate pollutants dispersion near Shelekhov
• assess possible contribution of emission from
  Shelekhov enterprises to Lake Baikal surface
  pollution.

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Equation of transfer and turbulent diffusion of
admixture
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Figure 1 Frequency exceeding of benz(a)pyrene
5 maximum allowable concentrations (standards for
air), January

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Figure 2 Frequency exceeding of solid fluoride
maximum allowable concentrations (standards for
air), January
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Figure 3 Isolines of matter concentrations near
surface when north-west wind blows
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Figure 4 Isolines of matter concentrations 100
meters height when north-west wind blows
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Table Different substances near surface
concentrations of Shelekhov enterprises
Substance Danger class Concentrations limit (mg/?3) Concentrations limit (mg/?3) Concentration for isopleth's number 1 (mg/m3)
Substance Danger class Maximum (20 min average) Daily average Concentration for isopleth's number 1 (mg/m3)
Nitrogen oxide (IV) 2 0,2 0,04 510-5
Sulphur oxide (IV) 3 0,5 0,05 210-4
Carbon oxide 4 5,0 3,0 510-4
Benz(a)piren 1 - 106 510-8
Fluoric hydrogen 2 0,02 0,005 1,510-5
Acetone 4 0,35 0,35 10-8
Suspended matters 3 0,5 0,15 610-4
Carbon-black 3 0,15 0,05 510-7
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Conclusions

• we pointed out that Shelekhov is one of the most
  air polluted towns in Russia
• we presented environmental assessment results of
  pollutants dispersion near Shelekhov
• we evaluated possible contribution in pollution
  of Baikal surface from Shelekhov industrial
  enterprises and showed that polluting matters
  reach the south Baikal areas in amounts rather
  lower then limited