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Heryani, Hesty
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Journal : EnviroScienteae

 1 
OPTIMASI PROSES PENETRALAN AIR ASAM TAMBANG PADA SETTLING POND PT DARMA HENWA TBK JOBSITE PT ARUTMIN INDONESIA SITE ASAM-ASAM Maulana, Tri Okta; Mirwan, Agus; Heryani, Hesty; Mizwar, Andy
EnviroScienteae Vol 19, No 4 (2023): ENVIROSCIENTEAE VOLUME 19 NOMOR 4, NOVEMBER 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v19i4.17885

Abstract

One of method which ussualy used in neutralizing Acid Mine Drainage using neutralizing agents is Settling Pond. This treatment process requires adding neutralizing agents to the waters or through a mixing system and allowing deposits to form in the pond. Many factors and process mechanisms can affect the effluent quality of an Acid Mine Drainage processing system. The purpose of this study is to evaluate the effectiveness and optimize the Acid Mine Drainage neutralization process carried out in Settling Pond 19. The research method used is to make theoretical simulations both modeling using PHREEQC and calculations to simulate various neutralization process options. The results showed that the neutralization process was affected by the quality of the neutralizing agent, the number of doses, the saturation index (precipitation) limit, the dissolution process of the neutralizing agent, the duration of dosing, and the duration of neutralization. According to modeling and theoretical calculations, the technical recommendations for optimizing the Acid Mine Drainage neutralization process to produce effluent quality that meets wastewater quality standards are the duration interval to inject neutralizer from every 60 minutes to every 13.6 minutes with a continuous dosing mechanism; The use of a maximum dose of limestone of 0.22 g/L to avoid oversaturated events, and the use of a limestone dissolution mechanism before the injection process is carried out to reduce the need for retention time for 216 seconds.
INOVASI MEDIA FILTER BERBAHAN DASAR PASIR KWARSA DAN KARBON ORGANIK KULIT BUAH AREN UNTUK PROSES PENGOLAHAN AIR BERSIH DI PT. AIR MINUM INTAN BANJAR (PERSERODA) Utomo, Budi; Heryani, Hesty; Suyanto, Suyanto; Sofarini, Dini
EnviroScienteae Vol 19, No 4 (2023): ENVIROSCIENTEAE VOLUME 19 NOMOR 4, NOVEMBER 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v19i4.17800

Abstract

Population growth requires the provision of clean water that meets the standards. As a provider of clean water. PT.Air Minum Intan Banjar (Perseroda) needs to continue to innovate in the water treatment process. One of them is in the filtration process. The purposes of the research were to analyze the thickness variations of the filter media from Quartz sand and palm sugar peel in the filtration process and to analyze the water resulted from the filtration process through laboratory tests. The variations of filter media thickness, namely: 30 cm, 40 cm, 50 cm, 60 cm and 1 control. The treatments were conducted with 20 repetitions which were taken randomly using the Complete Randomized Design (RAL) method. The samples from the treatment were analyzed in the laboratory to be compared to the parameters of Clean Water Standard from Permenkes RI No. 492 year 2010, namely: Turbidity, Color, TDS, pH, Fe, Mn, Nitrate, Nitrite, Sulfate, and E. Coli. The results of statistical data analysis showed that there was a significant change in the reduction of several pollutant loads through the filtration process using filter media from Quartz sand and organic carbon of sugar palm peels. The reduction of the pollutant loads especially in the thickness variation of 60 cm. The reduction of the pollutant loads is on several parameter, namely: Turbidity, Color, TDS, Fe, Mn, Nitrate, and Nitrite. However, the variation treatment of the thickness of the quartz sand filter media and the organic carbon of sugar palm peels at all thicknesses did not have significant change to the levels of pH, Sulfate and the amount of E. Coli between raw water and treated water in the filtration process.
Co-Authors Agus Mirwan Andy Mizwar Budi Utomo Dini Sofarini Fajar Zulkarnain, Andry Imanullah, Harry Maulana, Tri Okta Noor Ridha Yanti Nugroho, Agung Suyanto Suyanto Utomo Utomo Yanti, Noor Ridha