On the other hand, off-site system in terms of
electricity consumption, solid waste
transportation and disposal degradation of
remaining constituents in the effluent process
were producing lesser amount of greenhouse
gas respectively. During the last decades, good
practices in wastewater treatment system have
been neglected while these results indicated
that GHGs emission in wastewater treatment
system showed significant value. This should,
therefore, advises that more concerns be
brought and solutions be implemented. One
possible approach is to use an energy
conservation strategy to decrease greenhouse
gas from industrial wastewater treatment
system. The option is to adjust air blower by
using Variable Speed Drive (VSD) can be
beneficial to save cost 20%. The control of
microbial density (MLSS) in aeration tank
at optimized concentration can be reduce
the GHGs emission and also reduce
oxygen consumption demand. This would
have the implementation possibilities to reduce
carbon footprint, and energy of activated
sludge wastewater treatment system will help
to reduce cost of electricity consumption, to
increase efficiency of the system, and to
reduce maintenance cost of wastewater
treatment facilities. A better facility
performance will also benefit the ecology.