Jurnal Sains & Teknologi Lingkungan

Analisis Kualitas Air, Limbah dan Udara pada Industri Perhotelan: Studi Kasus Hotel X di Yogyakarta

Saprian Saprian — 2024-06-30

Environmental quality is one of the key factors in supporting the tourism industry, where good environmental conditions are expected to be an attraction for tourists to visit a city. Various environmental problems such as pollution of river water bodies, ground water and air must receive serious attention, for example through environmental quality monitoring activities by hotel industry players. The current research aims to evaluate environmental quality conditions in four-star hotels and provide recommendations for improvement. Data collection was carried out by surveys and direct monitoring of environmental conditions in several four-star hotels. The research findings can help hotel managers and local governments in improving sustainability and environmental management in the hotel industry. Specifically, the study focuses on aspects such as clean water, wastewater, ambient air, waste management, and noise pollution. The study results show that although the ambient air quality around four-star hotels meets quality standards, several parameters exceed the threshold. Wastewater from hotels significantly exceeds water quality standards, while the use of filters reduces the negative impact of wastewater pollution. The research serves as a contribution to the development of future studies related to environmental quality and workplace conditions in the Indonesian hotel industry.

Evaluasi dan Perencanaan Ulang Instalasi Pengolahan Air Limbah (IPAL) Industri Pembekuan Ikan PT. X Kabupaten Sidoarjo

Rodu Dhuha Afrianisa — 2024-06-30

Fisheries have become one of the main economic sectors in Sidoarjo Regency. X Ltd., an industry producing frozen fish, already has a Wastewater Treatment Plant, but the WWTP effluent produced does not meet quality standards. Based on these problems, it is necessary to evaluate the WWTP and then re-plan the WWTP so that the effluent results meet quality standards. The evaluation method was carried out by analyzing samples of wastewater from each WWTP unit, measuring the dimensions of each WWTP unit, and comparing the detention time parameters with the design criteria. The evaluation results showed that the existing WWTP conditions did not meet the design criteria, and the existing WWTP effluent results did not meet the quality standards of East Java Governor Regulation No. 72 of 2013. The recommendation from the evaluation results is to re-plan the WWTP using an Anaerobic-Aerobic filter system. The units used are screens, equalization tanks, initial settling tanks, anaerobic filter tanks, aerobic filter tanks, and final settling tanks. The WWTP plans to treat wastewater with a discharge of 3 m 3/day and characteristics of the wastewater, i.e., TSS 179 mg/L, BOD 239 mg/L, COD 586 mg/L, and Ammonia 29 mg/L. The WWT dimension is 6m x 1m x 1.5 m

Peningkatan Kualitas Air Bersih Sumur Gali Menggunakan Teknologi Filtrasi

Muhammad Al Kholif — 2024-06-30

The most common problem encountered in the use of well water is the presence of metal contaminants, particularly iron (Fe) and manganese (Mn). One alternative solution is the use of filtration with zeolite and activated carbon. This research aims to improve the quality of well water by reducing Fe, Mn, and turbidity levels using filtration technology. The treatment reactor consists of two reactors with the difference between reactors 1 and 2 lies in the type of media used. Reactor 1 uses zeolite media, and reactor 2 uses activated carbon. The filtration column used is a PVC pipe with a diameter of 10 cm and a length of 1 m. The independent variable in this study is the composition of the filtration media, consisting of a combination of quartz sand zeolite and quartz sand-activated carbon. The research findings show that in reactor 1, the decrease in Fe levels from the first day to the third day is 0.4975 mg/L, 0.6175 mg/L, and 0.605 mg/L, whereas in reactor 2, it is 0.9175 mg/L, 0.7725 mg/L, and 0.685 mg/L. The decrease in Mn levels in reactor 1 over three consecutive days is 0.08 mg/L, 0.07 mg/L, and 0.05 mg/L, while in reactor 2, it is 0.12 mg/L, 0.09 mg/L, and 0.06 mg/L. The decrease in turbidity levels in reactor 1 consecutively is 20.825 NTU, 13.305 NTU, and 11.09 NTU, while in reactor 2, it is 21.4775 NTU, 18.36 NTU, and 12.23 NTU. These filtration results have met the clean water quality standards according to PERMENKES No. 32 of 2017.

Waste Assessment Model (WAM): How Does the Company Assess the Waste?

Yeremias Budi Irawan — 2024-06-30

The results of the initial analysis carried out by the author occurred because there were several indications of waste problems at PT XYZ. These problems are the difference in actual time and standard time as well as the quality of production results that do not meet company standards. The purpose of this research is to determine the type of relationship between waste and the type of waste produced in the production process at PT Best Jeans Indo Citra Nusa. This research applies a mixed method research method, combining quantitative and qualitative data through observation, interviews, and literature study. The study population includes all PT XYZ employees, with a sample of 8 people selected using judgment sampling. The analysis was carried out using the Waste Assessment Method, which aims to identify and evaluate waste in the production process. This method consists of the Waste Relationship Matrix and the Waste Assessment Questionnaire. The occurrence of idle time and defects in the production process at PT XYZ can occur because the company still produces waste in every production process. With this research, it is hoped that companies can make efforts to minimize every process that can produce waste.