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Journal of Industrial and Environmental Chemistry | Volume 2
December 06 -07, 2018 | Dubai, UAE
Pet roleum Engineer ing, Oil and Gas
International Conference on
Joint Event
Process waste water treatment in a High rate anaerobic digestion reactor (EGSB) under various
Hydraulic Retention Times (HRTs)
Haider Al-Rubaye, Manohar M S, Shruti S K, Joseph D Smith
and
Mahyar Ghorbanian
Missouri University of Science and Technology, USA
P
rocess wastewater is generated with a high strength
organic and inorganic compounds, which made them
stand among one of the top pollutions generating industries.
In USA, Environmental Protection Agencies issued regulations
that charge for discharging wastes into water bodies. Industrial
wastewater with a very high COD strength (1, 10,000–1, 90,000
mg/L), BOD strength (50,000– 60,000 mg/L), were studied
in most developed high-rate anaerobic digestion process
called ‘Expanded Granular Sludge Bed’ (EGSB). COD removal
efficiency had been studied at different organic loading rates
(OLR) and hydraulic retention times (HRTs). For a specific OLR of
6 g COD/l.d and HRT of 5 days, the removal efficiency was more
than 95% and for the volatile fatty acids was about 87.2%. An
EGSB reactor had been built and used for investigating different
variables that have an essential contribution to the wastewater
treatment. HRT, pH, Temperature and COD strength are the
most effective process variables. Low energy consumption
combined with energy production can be accomplished at very
lowcosts. The anaerobic digestionprocess consists of four steps,
hydrolysis, acidogenesis, acetogenesis and methanogenesis.
The experimental setup is consisting of two stages, the first
two steps will occur in the first stage while the last two will be
in the second stage. Building two-step anaerobic process will
enhance the stability of the reactor. Actual process waste water
had been used for the investigation and various analysis was
implemented before introducing the feed to the reactor. The
high rate reactors are using biomass granular particles which
contain the microorganisms that fed on the waste water that
diffuses in to the particles. The pH of the effluent was almost
about 7.2 which is safer for the environment than before the
treatment. Mesophilic temperature range (T=36⁰C) was used as
operating temperature, temperature monitored and controlled
by data acquisition system and temperature controller.
e:
halrubaye@elevatedanalytic.comCleverson Esene et al., Oil & Gas 2018 &
Petroleum Engineering 2018, Volume 2
DOI: 10.4066/2591-7331-C2-005