ANALYSIS OF RAINWATER MANAGEMENT ANALYSIS OF RAINWATER MANAGEMENT ON THE BUILDING SITE AND CONSTRUCTION IN THE CITY OF SAMARINDA

Mon, 23 Sep 2024 07:56:23 +0000

Rain is water vapor that is condensed and falls from the atmosphere to the earth in all its forms in the hydrological cycle. Rainwater must be managed properly, if it is not managed it will cause various problems, such as flooding, soil erosion, and water pollution as well as negative impacts on people's health and welfare. Along with the influx of development investors into the city of Samarinda, the city's development continues to increase and makes this city continue to grow. However, during this growth and development, Samarinda City cannot be separated from the problem of flooding. Floods not only submerge housing and settlements, they can also damage community socio-economic service facilities and public infrastructure and can even claim lives, losses will be greater if economic and government activities are disrupted or even stopped. This research aims to analyze the management of rainwater in buildings and plots to reduce flooding in the city of Samarinda using the 95th percentile method by the mandate of Government Regulation Number 16 of 2021 Article 38 which states that every building, by its function and classification, must be equipped with a management system. Rainwater. The research was conducted in Samarinda using analysis and calculation methods. The research stages are divided into 3 stages, namely literature study, data collection, and data processing stage. The research results show that (1) by managing rainwater in buildings and plots through rainwater utilization and soil infiltration, rainwater runoff will be reduced; and (2)from the rainwater management calculation process using the 95th percentile method, the City of Samarinda is required to manage 21,185,343.9 m³ of rainwater. Rainwater management carried out by the Samarinda City Government can take the form of creating retention ponds (folders) in several areas, especially those where inundation or flooding frequently occurs, and in each building or area according to its function and classification, a retention or ground pond is provided.

Design and construct a biogas digester which uses human faeces as substrate

Christian Ogheneruemu Akeni, Justus Iroro Oboh — Tue, 01 Jul 2025 00:00:00 +0000

The rapid increase in population has placed significant pressure on available resources globally. This is largely because energy serves as the foundation of any economy. Although Nigeria’s dependence on fossil fuels continues to rise annually, access to electricity remains critically low. This has prompted the development of alternative energy sources, with recent attention focused on renewable energy. While biogas has gained notable attention, many existing biogas digester designs remain relatively expensive and are susceptible to corrosion and leakage. Therefore, this study aims to design and construct a biogas digester that utilizes human faeces as the primary substrate. To achieve this, design equations were developed to determine the volume of the digester, inlet and outlet pipes, gas holder, and digester cover plate, all based on the shape of the digester. The digestion chamber was fabricated using high-density polyethylene (HDPE) plastic. After fabrication, a ventilation test was conducted to ensure the system was leak-free. The results showed an average gas yield of 5.25 m³ over a 30-day period, equivalent to 37.91 g. The pH of the system decreased from 6.5 to 6.0. After purification, the volume of gas obtained was 3 m³, indicating that methane accounted for 57%, while carbon dioxide and other impurities made up the remaining 43%. The performance of the biogas digester was found to be satisfactory. Furthermore, the use of human faeces as feedstock can significantly contribute to solving waste management challenges while simultaneously enhancing the energy sector.

GPH-International Journal Of Mechanical And Civil Engineering

ANALYSIS OF RAINWATER MANAGEMENT ANALYSIS OF RAINWATER MANAGEMENT ON THE BUILDING SITE AND CONSTRUCTION IN THE CITY OF SAMARINDA

Design and construct a biogas digester which uses human faeces as substrate