4. Conclusion
This study demonstrated that flow rate of 2 L/min
and HRT of 10 hrs (influent) was found to be the
optimal condition for domestic wastewater treatment
by using simple and modified grease traps. However,
the modified grease trap was higher efficiency of SS,
BOD, and FOG removal than the simple grease trap.
Moreover, the modified grease trap that added
arrangement media of 5 cm diameters Mon brick, 1 cm
diameter gravel and 3 cm diameter Mon brick,
respectively with the media ratio at 1:1:2 was the
highest efficiency of SS, BOD, and FOG removal
approximately 80%
4. Conclusion This study demonstrated that flow rate of 2 L/min and HRT of 10 hrs (influent) was found to be the optimal condition for domestic wastewater treatment by using simple and modified grease traps. However, the modified grease trap was higher efficiency of SS, BOD, and FOG removal than the simple grease trap. Moreover, the modified grease trap that added arrangement media of 5 cm diameters Mon brick, 1 cm diameter gravel and 3 cm diameter Mon brick, respectively with the media ratio at 1:1:2 was the highest efficiency of SS, BOD, and FOG removal approximately 80%
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