Abstract:
The increasing population growth has an impact on increasing problems in wastewater
quality and garbage volume. It is a need to develop a sustainability solution for both problems.
In this research, the papaya fruit and spinach vegetable garbage were used as raw organic
materials and fermented for six months. This study objective was to determine whether eco
enzymes can be used to reduce nitrite concentration in wastewater. The research method was
conducted on a laboratory scale with the artificial samples in a batch system. The result showed
that eco enzyme made from a mixture of papaya and spinach can reduce the nitrite concentration
in the water sample. The t-test showed that the effect of eco enzyme application in reducing
nitrite in water samples was significant. The application of eco enzyme 0%, 2%, 4%, and 6%
respectively during 10 hours exposure showed the nitrite removal were 0.3 %, 20%, 29%, and
35 %. It can be seen that the reduction of nitrite concentration in samples added by eco enzyme
was caused by eco enzyme activity. The application at a higher concentration of 10%, 15%, and
20% showed that nitrite removal efficiencies were 35.7%, 36.7%, 46.7%, 49.4% respectively
during 7 hours exposure. It can be concluded that a longer time exposure, and also the more eco
enzyme concentration, showed the more result in the effect of nitrite reduction concentration in
water. 4. By this study it is proven that application of eco enzyme made from organic garbage
can be an alternative solution for garbage and wastewater quality problem.
