Waste (English)

The degradation of global environment quality has inspired the environmental awareness of the world society in various sectors including education sector. Higher education institution, as a renewal and enhancement of science and technology, should commit a good model in preserving environment. Universitas Sebelas Maret, as one of the institutions that concerns about environment is encouraged to preserve environment to be sanitary, green, and healthy through Green Campus program. To accomplish the green campus, a campus should meet one of the required indicators and criteria, one of them is the management and processing of waste of organic, inorganic, hazardous and toxic and disposal waste. The program designed for waste treatment and processing includes Recycling Program for University Waste, Toxic Waste Recycling, Organic Waste Treatment, Inorganic Waste Treatment, and Sewage Disposal.

A. Waste Water treatment

Recycling Program for University Waste is an effort to recycle domestic wastewater in UNS in order to be re-used and reduce ground water usage quantity in UNS. However, UNS has yet to own an integrated and complete recycling program to treat the significant amount of domestic wastewater. Some of the waste flows into the pond and is reused.

On the other side, UNS has made an integrated channel system for domestic wastewater and rainwater in the region of faculty, institution, head office, and working unit to be streamed to a storage pond in UNS and to the rivulet of Bengawan Solo subsequently.

B. Organic and In Organic Waste Treatment

One of the biggest waste produced by UNS’ environment activity is organic waste such as leaves and papers. In 2014, UNS has executed organic and inorganic waste sorting by increasing the number of segregated trash bins in each faculty/working unit and along the road of UNS.

Data of waste sorting is increasing this year. In 2013, there was only 22.7% (5 faculties doing waste sorting. In 2014, segregated trash bins have been placed in all faculties/working unit and along the road of UNS.

Recently, UNS is conducting an independent organic waste treatment (fully composted organic waste) by utilizing composting tools provided in the faculty of Agriculture and Engineering. Nevertheless, this organic waste is also used and managed by third party.

This year, attempts to reduce the paper usage are made, e.g., UNS internal meeting invitation by using email and thesis consultation by using scrap papers or

soft file.

Inorganic waste treatment is executed by collecting the waste into a container to avoid scattering. Inorganic waste treatment is handed to the third party


Organic Waste Processing at the Faculty of Agriculture
Organic Waste Treatment in Faculty of Engineering

There is a Unit of Compost Processing in Faculty of Engineering. The unit has been performing compost processing from leaves garbage since December 2013 with the help of WIKA. In the beginning, the unit is managed by the faculty. Currently, it is managed by KOPMA (student cooperation). There is a leaves chopper tool in the unit. However, the tool has not been optimally utilized due to its small capacity and low ability in chopping leaves.

The crushed leaves is mixed with fermentor in a closed drum for 2-3 weeks. Finished compost is measured and packed for 1 kg and labeled with Pupuk Kompos Semar. The compost is sold to the people nearby. The unit does not operated daily. It usually operates 3 times a week and produces 70 packs of compost.

C. Toxic Waste Recycling

Faculties and working units in UNS that are dominantly producing hazardous and toxic waste are Faculty of Engineering, Faculty of Agriculture, Faculty of Mathematics and Natural Science, Faculty of Medicine, Faculty of Education and Teacher Training and central laboratory of Mathematics and Natural Science, UNS.

In education, laboratory plays an eminent role in improving education quality and quantity for students and lecturers who conduct research in university scope. Thus, laboratory activity level is high. The result of the practicum and preliminary analysis shows that the practicum analyzed samples containing hazardous material, such as Fe, Pb, Cr, Cu, Cd, Hg, etc.

Some of toxic waste treatments in UNS are conducted by collaborating with third party; some are conducted independently by using IPAL (Wastewater Processing Installation). In 2009, UNS built a processing unit of waste which is mostly produced by central laboratory of Faculty of Mathematics and Natural Science. IPAL is planned to accommodate the waste from Faculty of Mathematics and Natural Science and Faculty of Medicine in an integrated way.

Table 1 is a result of chemical laboratorium wastewater test in 2014. It shows that the wastewater is considered to be fine and not to exceed the environment standard
Table 1

D. Integrated IPAL
UNS has already made plan for integrated IPAL processing by utilizing one IPAL concept in the location as shown in Figure 8. The location of integrated one IPAL is located in the lowest area to ease the flow of domestic liquid waste from all faculties and working units. One IPAL plan employs few open and empty lands that can reduce the cost of IPAL establishment.
Design of domestic Liquid Waste Flow and Integrated IPAL in UNS Environment