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Okti Dinasakti Nurul Mentari
Program Studi Teknik Lingkungan, Universitas Singaperbangsa Karawang
Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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Evaluasi Pengolahan Limbah Cair Domestik pada Instalasi Pengolahan Air Limbah di Kota Bogor Iren Chaerunnisa; Okti Dinasakti Nurul Mentari
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The population growth in Bogor City is increasing every year, which can be seen from the population data from 2018 to 2022, increasing by 84,934 people with a population growth percentage of 2.07%. As the population grows, the demand for clean water will increase. This will also have an impact on the amount of domestic wastewater produced. In 2021, access to adequate sanitation in Bogor City will only be 75.35%, while it should reach 100% to achieve the SDG targets. Therefore, in order to achieve adequate sanitation, it is necessary to have a domestic wastewater treatment plant (WWTP) and assess IPAL so that the domestic wastewater produced can be safely discharged into the environment. A WWTP consists of several treatment units such as an intake building, an anaerobic pond, an aerobic pond, a facultative pond, a maturation pond and a sludge drying bed. The WWTP can be evaluated by comparing the effluent after treatment with quality standards, namely the Minister of Environment and Forestry Regulation No. 68 of 2016. The evaluation results show that several parameters still do not meet the quality standards for effluent to be discharged into the environment. These parameters are BOD and total coliform. Meanwhile, the percentage of TSS parameter removal was 57.14%, BOD 26.34%, COD 64.28%, Ammonia 69.88% and Total Coliform 99%.
Optimalisasi Unit Proses Pengolahan Air Minum Pada Perusahaan Umum Daerah M Alif Rifky; Wilma Nurrul Adzillah; Okti Dinasakti Nurul Mentari
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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The International Research Centre (IRC) is one of the units in the IPA Poncol branch, which includes coagulation, flocculation, sedimentation, filtration and disinfection units with a capacity of 40 L/sec concrete building. Based on direct observation, the problem in the IRC unit is that the produced effluent is less than optimal, which is 29.4 l/sec, while the designed capacity of the IRC unit is 40 l/sec and does not match the existing process units in the IRC with the applicable design criteria. The cause of the sub-optimal discharge is due to a malfunctioning penstock in the flocculation unit, filter media that has not been replaced for a long time and some valves that have not been maintained. The design criteria that are not met by the IRC unit are the velocity gradient parameter multiplied by the retention time in the coagulation unit, the retention time in the flocculation and sedimentation unit and the backwash time in the filtration unit. The purpose of this study is to provide recommendations for the optimisation of the IRC process unit at Poncol Branch IPA. The method used is to analyse the existing conditions with applicable design criteria. The results of this study are to provide recommendations for the coagulation unit, namely the height of the inlet well to the coagulation basin, changes in the water level in compartment one of the flocculation unit, and changes in the volume of the sedimentation and filtration units.
Co-Authors Iren Chaerunnisa M Alif Rifky Wilma Nurrul Adzillah