Bogor, 9 December 2021: PT Prasadha Pamunah Limbah Industri (PPLI) is known as a hazardous waste management company and is one of the largest in Indonesia with a land area of 64 hectares based in Klapanunggal, Bogor, West Java.
As a company that has focused on treating hazardous waste for more than 27 years, the management believes that its treatment technology needs to be improved and continuously developed. Moreover, the types of hazardous waste that PPLI must be able to handle are increasing and expanding throughout the archipelago.
This was stated by the President Director of PT PPLI, Yoshiaki Chida to reporters in a press release, (8/12). “Increasing capacity with incinerator is one of them,” said PT PPLI President Director, Yoshiaki Chida.
Chida continues incineration is a thermal waste treatment process that utilizes heat energy to burn waste. “This combustion process is carried out in a controlled manner at high temperatures in a closed device called an incinerator,” he said.
He explained that the heat energy used in the incineration process is not only capable of destroying the pollutants contained in the waste, but also able to significantly reduce the mass and volume of the waste.
PPLI management is currently improving its hazardous waste treatment services by presenting a “giant” incinerator that has the ability to destroy up to 50 tons of hazardous waste per day.
So that the total amount of hazardous waste that can be treated by PPLI reaches over 800 tons per day. “The existence of this large capacity incinerator will enrich the menu of waste management services that can be offered, as well as provide flexibility for PPLI as a one-stop-service waste management for all industries in Indonesia,” said the man who was born in the country of Sakura 51 years ago.
This giant incinerator has obtained the Operational Eligibility Letter in the field of Hazardous Waste Management for Hazardous Waste Treatment Activities using an Incinerator from the Ministry of Environment and Forestry after going through a trial process for several months. “With the issuance of the Operational Eligibility Letter, officially the incinerator can be fully functional,” he added
More clearly, the Director of Operations of PPLI, Syarif Hidayat explained that waste incineration utilizes heat to destroy waste and the pollutant contained in it. “Medical waste is one that can be treated with this method,” he said.
In addition, continued Syarif, organic waste that can indeed burn, such as oil sludge, paint sludge, used rags, waste made from plastic, expired materials and products, used drilling mud, industrial WWTP sludge, expired chemicals and sample residues from research institutes are also become incinerator ‘food’.
The ‘giant’ incinerator owned by PPLI have the following capabilities:
- The model used is the vertical stoker type. This type can be used for waste that is not segregated and waste with a high moisture content can still be burned without the need for fuel.
- Equipped with emission control equipment so that it can meet even the strictest emission requirements such as EU emission requirements.
- The pressure inside the incinerator is always kept lower than the outside pressure, so there will be no leakage of combustion gases out without going through the existing chimney.
- Has several ways of putting waste into incinerators. Variations in the input of waste will facilitate treatment for various types and properties of waste such as solid, liquid, sludge, and infectious.
- Equipped with a fixed grate furnace, for waste to be destroyed along with its packaging, for example, mercaptan waste which has a very strong smell or waste whose combustion residue will be further recycled, for example electric vehicle battery waste or electronic waste.
The emission controls used in this Incinerator technology include:
- Use of ammonia or urea to control NOx in the flue gas produced.
- The use of a rapid cooling system to rapidly cool the flue gas to below 200°C, within 2 seconds. Aims to prevent the re-formation of dioxins.
- Use of lime, activated carbon to ensure that pollutants such as sulfur/H2S, HCl, and heavy metals meet existing quality standards.
- The use of a turbo chemical baghouse filter whose operation is carried out automatically and is connected to the continuous emission monitoring system (CEMS) facility. In this unit organic pollutants, sulfur, HCl, HF and heavy metals will be filtered. Its operation connected to CEMS ensures that if the flue gas coming out of the filter bag exceeds a certain value, it will automatically be cleaned.
- Use of continuous emission monitoring system (CEMS). PPLI incinerator are equipped with CEMS which monitors not only temperature, flow rate, O2 and CO2, but also monitors HCl, NOX, SO2, CO, Opacity, CH4, HF, Dust Concentration and Moisture. The use of CEMS to fully monitor parameters in flue gas is the first and only one in Indonesia at this time.
Feeding waste into vertical stocker type incinerators is carried out in various ways, such as:
- Through a conveyor belt, for solid waste or sludge without free liquid. So that this solid waste is homogeneous, it will first be mixed/stirred in the mixing pit.
- Entry for medical waste with infectious characteristics.
- Intake by pumping directly into the incinerator. It is used for liquid waste such as waste oil, solvent, alkali waste and acid waste.
- Entry through direct feeding to the incinerator. Used for laboratory reagent waste with a size below 0.5 liters.
The flow of waste treatment through this incinerator is to enter the waste into the first combustion chamber with a minimum temperature of 800°C. The residence time of the waste in the combustion chamber is about two to six hours. From the first combustion chamber, the flue gas produced by the waste will be forwarded to the second combustion chamber, which has a combustion temperature ranging from 850-1000°C with a residence time of at least two seconds. The gas produced in the second combustion chamber will then be rapidly cooled in the cooling tower to prevent the formation of dioxins.
This cooling is done by spraying water so that the gas can reach temperatures below 200°C in approximately two seconds. The cooled combustion gas will then be added with lime and activated carbon before being filtered using a baghouse filter which is controlled by a computer system through special programming.
PPLI is a reference for hazardous waste treatment in Indonesia
Head of Sub-directorate for Pre-Prosecution at the Attorney General’s Office, Dyah Yuliastuti and Director of Law Enforcement (Gakkum) of the Ministry of Environment and Forestry (KLHK) Yazid Nurhuda during a field study at PPLI admitted that his team’s visit to the hazardous waste management company was based on a recommendation from the Ministry of Environment and Forestry that law enforcers have the same perception in handling cases of environmental pollution, especially those caused by hazardous waste.
“PPLI is a reference because it is in accordance with applicable laws in Indonesia,” said Yazid Nurhuda.
Meanwhile, Dyah Yuliastuti assessed that PPLI deserves to be a reference for all waste generator and management industries in Indonesia. By looking directly at PPLI, we can find out how companies should properly manage hazardous waste,” said the subordinate of Attorney General ST Burhanudin.
In addition to PPLI being a reference source or reference for waste management according to legislation, PPLI is also the only integrated management of industrial waste and hazardous waste from collection, transportation, treatment, disposal to landfill.
About PT. Prasadha Pamunah Limbah Industri (PT. PPLI)
PT. PPLI is a limited liability company in Indonesia which has been in operation since 1994, providing integrated services of collection, recycling, processing and landfilling services for hazardous and non-hazardous waste addressed at Jalan Raya Narogong, Desa Nambo, Klapanunggal District, Bogor, West Java . PT. PPLI is 95% owned by DOWA ECO-SYSTEM CO., LTD and 5% is owned by the Government of Indonesia.(atp)