Page 68 - BCML AR 2019-20

Emissions

Emissions in the Indian sugar the sugar mill. The heavier particles settle
industry on vegetation. There could be reports of
All cane-based sugar mills in India use dizziness and irritation in the eye, nose,
150 bagasse as a fuel in boilers. The burning throat and lungs from residents in the
surrounding areas.
of bagasse in boilers produces particulate
matter, oxides of nitrogen, carbon, sulphur As per the general emission standards,
and water vapour. Except for particulate particulate matter is required to be
matter, emissions of bagasse-fired boilers within 150 mg/Nm3. In case of horse
are within the limits prescribed by the shoe/pulsating grate and in the case of
pollution control authorities. spreader stroker bagasse-fired boilers, the
Mg/Mn3 is the benchmark for
particulate matter released The particulate matter, usually referred particulate matter emission is required to
into the air by bagasse to as fly ash, consists of ash, unburnt be within 500 mg/Nm3 and 800 mg/Nm3
fired boilers as per general bagasse and carbon particles. Fly ash is respectively.
emission standards light and contains a large percentage
of fine particulate matter. If air pollution BCML and its emission
control equipment is not installed at control initiatives
the sugar processing units, fly ash can The Company has invested adequately in
escape into the atmosphere through emission control by way of ESP, bag filters
the chimney. The particulate matter and scrubbers. It has also implemented
coming out of the chimney travels long online systems to monitor emissions
distances, depending on the particle size across manufacturing units. These systems
and atmospheric conditions. It results in monitor emissions with online alerts in
reduced visibility in the areas surrounding case of deviations. These investments
improved ambient air quality.

Effluents

Effluent generation in sugar factories

Effluents in sugar factories are generated BCML”s basic concepts
in the following ways: y yhe quality of treated water is maintained as per standard
T
y yMill house: Cleaning and washing, juice leakages, parameters of treating effluent.
spillages of mill bearing water y yhe stringent regulatory norms for discharge are met
T
y yBoiling house: Chemical boiling and tube cleaning under all circumstances.
of evaporator and pans, excess condensate water, pump y yhe aim is to keep the environment free from effluent
T
leakages, daily and periodic cleaning and washing, contamination.
laboratory and domestic water usage
y y Minimal electricity consumption, low chemical
y ySpray pond: Blow down of spray pond water consumption with low and moderate operational and
y yBoiler blow down and reject of DM/RO plants maintenance costs.
P
y yower plant cooling tower blow down.

66 | Balrampur Chini Mills Limited