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A. Kusumawanto and M. Setyowati
b. Program to reduce the use of paper and plastic on campus
In order to support the paper waste reduction program on campus, Universitas Gadjah Mada has implemented a correspondence program, especially for lecturers and
employees and calls for the use of two-sided paper. In addition, students can collect
coursework or final assignments via e-mail to reduce the amount of paper usage on
campus.
c. Organic waste treatment
The percentage of the amount of organic waste produced at Universitas Gadjah
Mada is 41.53–79.03% (Setyowati et al. 2018). Based on the 2016 waste survey
report issued by the Directorate of Assets of Gadjah Mada University, the average
generation of waste generated is 2595.8 kg/day (Aset 2016). The waste is then taken
to “RINDU” to be processed into fertilizer with composting technology. Composting
technology owned is Indore heap, which has a 60 day processing time and windrow
composter which has a 45 day processing time (Setyowati et al. 2018). In addition,
there is a rotary composter that has a processing time of up to 15 days shorter than
the 2 composting technologies that have been running. With the three technologies
owned, RINDU as UGM’s waste management manager can process waste more than
75% of the total waste generation.
d. Inorganic waste treatment
Inorganic waste produced by Universitas Gadjah Mada is divided into three
types, namely plastic waste 0.88–18%, paper waste 1.96–25.10%, and other waste
4.01–37.27% (Setyowati et al. 2018). Recycling Innovation House (RINDU) besides
processing organic waste also processes inorganic waste, although its capacity is not
as big as in the processing of organic waste. Inorganic waste processed is a plastic waste and processed with pyrolysis technology with a tool capacity of 30 kg/h.
Inorganic waste that cannot be processed in the pyrolysis process is then burnt in an
incinerator, which has a capacity of 20 kg/h. The pyrolysis process produces about
1–2 L of fuel oil, which is then used as incinerator fuel (Setyowati et al. 2018).
e. Toxic waste treatment
Toxic waste at Universitas Gadjah Mada comes from the remnants of practicum
or research. Toxic waste has been handled but not recycled by Universitas Gadjah
Mada. The waste has its own shelter/depot (e.g.,: southern mechanical engineering
workshop). The toxic waste that is disposed of is then classified, then every 6 months
will be transported using containers to Cileungsi to be handed over to third parties.
f. Sewerage disposal
The liquid waste produced at Universitas Gadjah Mada can be divided into greywater
and blackwater. Greywater in the form of liquid waste originating from the canteen
kitchen. The handling of liquid waste from the canteen kitchen will be handled
conventionally by each canteen manager. While blackwater is in the form of liquid
waste originating from latrines. Management of liquid waste in the form of urine and
A. Kusumawanto and M. Setyowati
b. Program to reduce the use of paper and plastic on campus
In order to support the paper waste reduction program on campus, Universitas Gadjah Mada has implemented a correspondence program, especially for lecturers and
employees and calls for the use of two-sided paper. In addition, students can collect
coursework or final assignments via e-mail to reduce the amount of paper usage on
campus.
c. Organic waste treatment
The percentage of the amount of organic waste produced at Universitas Gadjah
Mada is 41.53–79.03% (Setyowati et al. 2018). Based on the 2016 waste survey
report issued by the Directorate of Assets of Gadjah Mada University, the average
generation of waste generated is 2595.8 kg/day (Aset 2016). The waste is then taken
to “RINDU” to be processed into fertilizer with composting technology. Composting
technology owned is Indore heap, which has a 60 day processing time and windrow
composter which has a 45 day processing time (Setyowati et al. 2018). In addition,
there is a rotary composter that has a processing time of up to 15 days shorter than
the 2 composting technologies that have been running. With the three technologies
owned, RINDU as UGM’s waste management manager can process waste more than
75% of the total waste generation.
d. Inorganic waste treatment
Inorganic waste produced by Universitas Gadjah Mada is divided into three
types, namely plastic waste 0.88–18%, paper waste 1.96–25.10%, and other waste
4.01–37.27% (Setyowati et al. 2018). Recycling Innovation House (RINDU) besides
processing organic waste also processes inorganic waste, although its capacity is not
as big as in the processing of organic waste. Inorganic waste processed is a plastic waste and processed with pyrolysis technology with a tool capacity of 30 kg/h.
Inorganic waste that cannot be processed in the pyrolysis process is then burnt in an
incinerator, which has a capacity of 20 kg/h. The pyrolysis process produces about
1–2 L of fuel oil, which is then used as incinerator fuel (Setyowati et al. 2018).
e. Toxic waste treatment
Toxic waste at Universitas Gadjah Mada comes from the remnants of practicum
or research. Toxic waste has been handled but not recycled by Universitas Gadjah
Mada. The waste has its own shelter/depot (e.g.,: southern mechanical engineering
workshop). The toxic waste that is disposed of is then classified, then every 6 months
will be transported using containers to Cileungsi to be handed over to third parties.
f. Sewerage disposal
The liquid waste produced at Universitas Gadjah Mada can be divided into greywater
and blackwater. Greywater in the form of liquid waste originating from the canteen
kitchen. The handling of liquid waste from the canteen kitchen will be handled
conventionally by each canteen manager. While blackwater is in the form of liquid
waste originating from latrines. Management of liquid waste in the form of urine and