FEASIBILITY ANALYSIS AND DESIGN PROJECTION OF WASTE MANAGEMENT SYSTEM IN BALIKPAPAN

Waste generation in Balikpapan from 2016 to 2020 continues to increase by 443 to 482 tons per day. One of the efforts of DLH Balikpapan is to optimize the MRF and ITF facilities, as well as to analyze how much these facilities are needed to reduce waste generation at final disposal sites (Landfill) Manggar and enhance the durability of the landfill. The approach utilized in this study employs direct observation methods, such as data collection results on the amount of waste input and output, and secondary data, such as geometric methods and all data on waste generation in Balikpapan. The calculation of the feasibility and effectiveness analysis of the MRF inorganic waste processing facility using the recovery factor approach obtained 60.3%, while the ITF organic waste processing got a result of 45.7%. With the current condition, Manggar Landfill can be used until the end of 2025, Manggar Landfill can be used until the end of 2025. By optimizing garbage processing in these two facilities, the MRF has expanded the service coverage to 3 urban villages and has a projected age of up to 2033. It will be optimized for ITF processing facilities by utilizing process biogas. The primary objective of this research is to determine how many additional processing sites are needed starting with household waste sources thus, the calculation findings show that an additional six units of MRF facilities and ten units of ITF facilities are required. As a result, with the addition of inorganic and organic waste processing sites, Manggar's Landfill estimated age is extended until 2028.


Introduction
Garbage is a common issue in several cities in Indonesia. These issues come in the form of technical problems in waste processing and how to cope with waste generated in the city. Likewise, in Balikpapan, the waste problem is included in a highly concerned category to maintain a healthy environment in Balikpapan. Data of the interview result with a staff officer of environmental service (DLH) at February 2021 that in 2016 -2020 the amount of waste generated in Balikpapan was recorded. 2020 482 Given that the amount of waste generated in Balikpapan has increased over the previous five years, the Balikpapan municipal government must find a solution to overcome the waste problem.
The Balikpapan City Government is working to implement Regional Regulation (PERDA) number 13 of 2015 on the Processing of Household Waste and Similar Household Waste. As a form of Regional Regulation (PERDA) realization, mainly by applying the 3R principle (Reduce, Reuse, and Recycle) from the household scope before being discharged to the Landfill (Final Processing Site) at Manggar Village, Balikpapan. Based on the aforesaid Regional Regulation (PERDA), the government of Balikpapan has constructed supporting facilities in the form of MRF (Material Recovery Facilities) in Bahagia Mount Village for inorganic waste and ITF (Intermediate Treatment Facilities) in Sepinggan Village for organic waste, especially waste from the Sepinggan market.
The increase in waste generation in Balikpapan is exactly proportionate to the city's population growth. According to Central Bureau of Statistics (BPS) data for Balikpapan (BPS City of Balikpapan). There are several classifications of waste based on the source (sumantri, 2010): 1. Residential waste is waste generated due to the actions of each household member who lives in a building or buildings. The majority of waste generated by household sources is organic waste such as vegetable waste, food waste, plastic bags, etc. 2. Public facilities waste and market places generated by public facilities such as markets, terminals, and stations. This garbage has enormous potential as a waste generator, producing waste such as tree branches, dried leaves, food Online version available at http://journal.ugm.ac.id/index.php/ajse waste, vegetable waste, paper waste, cans, plastic, and other sorts of garbage. 3. Community service facilities waste includes dry waste such as leaf and tree twig waste and liquid waste such as plastic drink residue and food waste. This waste is sourced from community service facilities such as beaches, hospitals, health centers, government-owned offices, etc. According to Monica Sitanggang (2017), waste management is a set of actions that processes and handles waste from generation to disposal. In general, waste handling activities include waste generation, on-site waste handling, waste collection, waste transportation, waste processing and processing, and final waste disposal. MRF Bahagia Mount was conducted for analysis. The research undertaken at the MRF facilities aims to analyze the feasibility of processing and sorting waste using the recovery factor method and the economic aspects using the net present value (NPV) way and exploring the estimated age of MRF Bahagia Mount.

A. Data Collection Method
The observation and secondary data method were employed to obtain data in this study. The observation method is a direct action to the research site that aims to observe, analyze, and interact with officers and employees at supporting facilities and waste processing systems in Balikpapan, specifically MRF, ITF, and Landfill. While the secondary data in this study, all readily available and recorded data at the location of the waste processing system facility, as well as data that has been registered in the DLH Balikpapan city. Based on an interview with a staff officer at Environmental service (DLH), if the reducing waste of those facilities is more than 50%, it is decided feasible to applicate in this city. B. Data Processing a. Calculating waste generation and city projection of Balikpapan.
-Calculate the amount of waste generated per day.
-Calculate the projected population growth of Balikpapan.
Where: Pn = Total population at the end of the period (persons) Po = The initial population (persons) r = average population growth rates each year (percent) dn = projection of time period b. Calculating MRF age eligibility analysis.
-Identify the amount of incoming inorganic waste.
-Calculate the volume of waste that has been processed.
-Identify the waste generation rate per person in Mt. Bahagia village -Calculate the percentage of waste that is utilized (RF). = 100%. (3)

Results and Discussions
a. Calculating waste generation and city projection in Balikpapan.
-Calculate the projected population growth in Balikpapan.
The following is a calculation of the projected population in Balikpapan over the next ten years: -Calculate the amount of waste generation per day.
The following is a calculation of the projected waste generation in Balikpapan over the next ten years: Waste from the sorting and processing waste at the MRF Bahagia Mount can be seen in Figure 1.

Figure 1. Record of inorganic waste segregation in MRF
-Calculate the percentage of waste that is utilized or recovery factor (RF). After knowing the output of inorganic waste sorting then, the efficiency of the MRF sorting facility may be calculated using the following formula: = 2,918 4,077 100% = 60.3% (5) -Knowing the waste generation rate per person in Gn. Bahagia Village. According to DLH Balikpapan data, the organic and inorganic waste ratio is 52.4% and 47.6%.  To maximize processing and transporting, 15 additional pick-up units with a capacity of 2m 3 and 54 employees are required. c. Calculating ITF age eligibility analysis -Calculate the volume of incoming organic waste.
The results of 7 working days of recording from February 8 to February 15 revealed that the average incoming organic waste was 64,330 tons/7 days = 9.19 tons/day. -Calculate the volume of output in the form of compost.
Based on the findings of the above recording for seven working days, the average amount of compost products is 29.4 tons/7 days = 4.2 tons/day.
-Calculate the waste utilization or recovery factor (RF). Manggar Landfill has a compost processing facility and cooperates with garbage collectors to reduce waste. To project the need for additional MRFs by comparing the population and waste generation in each village in Balikpapan with the MRF Mt. Bahagia, also considering the composition of the amount of waste that goes to Manggar Landfill, which is approximately 47.6% inorganic waste.
-Determining the number of MRF facilities that are required.
The addition of 6 MRF units was obtained due to calculations and comparisons of the population and the generation of inorganic waste. To project the need for additional ITF, compare the population and waste generation in each urban village in Balikpapan City to the maximum capacity and launched the age of the ITF, as well as the composition of the amount of waste that goes to Manggar Landfill, which is approximately 52.4 percent organic waste.
-Determine the required number of ITF.
It was found that there were ten more ITF units based on population and organic waste generation calculations and comparisons.