Impact of methane emissions from wastewater sector in India ...

Methodology III - Flux measurement
For non-aerated surfaces,
Methane gas flux, E (mass/area/time) is calculated from
the following equation
E = ( V / A ) x ρ x ( dC / dt)
V = Volume of Chamber.
Ρ = Density of gas at the temperature recorded in
the chamber.
dC/dt = Linear increase in the gas concentration in
the chamber during the sampling period.
For aerated surfaces
E = ρ x C x Q / A
ρ = Density of gas at the temperature recorded
in the chamber.
C = Sample gas concentration
Q = Gas flow rate inside the gas data analyzer
A = Enclosed surface area.
Monitoring
Instruments and
Analytical Facilities
used for work
Flux Measurement for
domestic sewage
Gas data analyzer