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All Journal Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Aussie Amalia
UPN "Veteran" Jawa Timur
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Engineering Public Health Social Sciences

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Analysis of pH Changes at the Wastewater Treatment Plant After Addition of Ultilox Effluent: Analisis Perubahan pH pada Instalasi Pengolahan Air Limbah Setelah Penambahan Limbah Ultilox Intan Maria Novia Dorty Hulu; Aussie Amalia
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol. 9 No. 2 (2025): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : DPD Jatim Perkumpulan Dosen Indonesia Semesta

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pH is one of the indicators that determines the quality of wastewater that can affect the wastewater treatment process. Changes in pH in water greatly affect the physical, chemical, and biological processes of organisms living in it. This study was conducted to analyze the pH quality of water in the PT Coronet Crown Wastewater Treatment Plant (IPAL), before and after the addition of ultilox waste, with the addition of coagulant as an indicator that can maintain the pH of the water. Monitoring was carried out for one month after the addition of ultilox waste, namely from October 7 to November 7, 2024. The parameters measured included changes in the pH of wastewater from day to day. The pH quality standard used is in accordance with applicable regulations, namely 6-9. The measurement results showed that the pH of wastewater in the IPAL before the addition of ultilox was 7.2, but after the addition of ultilox, the pH changed to 6.5. The data shows that the pH before, during the addition, and after the addition of ultilox waste still meets the quality standards in the range of 6-9.
Evaluation of Semi-Aerobic Plant Waste Composting System in a Manufacturing Industry in Surabaya: Evaluasi Sistem Pengomposan Semi-Aerob Sampah Organik Sisa Tanaman pada Industri Manufaktur di Surabaya Arum Retno Dwi Lestari; Aussie Amalia
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol. 10 No. 1 (2026): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : DPD Jatim Perkumpulan Dosen Indonesia Semesta

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The management of plant-based organic waste in industrial environments is an important component of waste reduction efforts and the implementation of sustainable environmental management principles. A manufacturing industry in Surabaya manages plant residue waste through an internal composting system that has not fully applied controlled aerobic composting principles. This activity aims to evaluate the semi-aerobic composting system implemented, particularly in terms of process flow, composting duration, and the quality of the resulting compost compared to applicable standards and regulations. The method used was a descriptive qualitative approach with an evaluative framework, conducted through field observations, interviews, and monitoring of process parameters such as temperature and pH. The results indicate that the composting process required a longer duration than the ideal timeframe due to the absence of material shredding and limited aeration, which reduced microbial activity during decomposition. These conditions affected compost quality, resulting in non-uniform maturity and characteristics that did not fully meet compost maturity criteria. This evaluation provides an overview of the existing composting system and serves as a basis for developing improvement recommendations to enhance process efficiency and compost quality in accordance with applicable composting standards.
Risk-Based Evaluation of Sanitation Hygiene at Drinking Water Refill Depot of PT Y, Surabaya: Evaluasi sanitasi higiene Berbasis Risiko di Depo Air Minum PT. Y Surabaya Muhammad Ibnu Fauzi; Aussie Amalia
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol. 10 No. 1 (2026): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : DPD Jatim Perkumpulan Dosen Indonesia Semesta

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Abstract

The drinking water depot at PT. Y is crucial for employees to support their work and prevent dehydration and fatigue. However, if health standards are not optimally implemented, it can increase the possibility of contamination, which can impact water quality and employee health. Good drinking water is water that is free from physical, chemical, and microbiological contamination. This study aims to ensure that sanitation and hygiene standards at PT. Y are in good condition. This depot uses raw water from the mountains, transported by tanker trucks and treated through a silica filtration system, activated carbon, micron membranes, and ultraviolet light disinfection. The study used an observation and evaluation approach. Data collection was carried out through observation and interviews. The hygiene and sanitation assessment refers to the Risk-Based Food Hygiene and Sanitation Guidelines issued by the Ministry of Health in 2021. After conducting the analysis, the results showed that the drinking water depot at PT. Y generally complies with most sanitation and hygiene requirements, both for quality standard equipment and for handlers. This is evidenced by a very high inspection score of 96.4, indicating a low risk of non-conformity. However, there were minor deficiencies in the building and raw water aspects, for which there were no purchase receipts. These deficiencies can be used as evaluation points for improvements during future audits.
Co-Authors Arum Retno Dwi Lestari Intan Maria Novia Dorty Hulu Muhammad Ibnu Fauzi