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The flash floods that struck Aceh Tamiang caused infrastructure damage and contaminated clean water sources, making it difficult for residents to obtain potable water. This situation increases the risk of water-borne diseases and worsens the post-disaster situation. This research aims to develop a large-scale, simple water filtration prototype as an emergency response solution that is effective, economical, and easy to implement by affected communities. The methods used include field observation, water sampling, testing simple physical parameters (turbidity, color, odor, and pH), and designing a gravity-based, multi-stage filtration system without electricity. The prototype uses a combination of filter media such as gravel, silica sand, activated charcoal, and natural fibers in a drum system. Test results show a decrease in turbidity levels from 150–300 NTU to 5–15 NTU after the filtration process, as well as an increase in pH to near neutral. The filtered water is declared suitable for sanitation and consumption after undergoing a further disinfection process. In addition to implementing the technology, this research also includes public education regarding the selection of safe water sources and maintenance of the filtration system. Based on these results, this large-scale simple water filtration prototype is effective as an appropriate technological solution in handling the post-disaster clean water crisis and has the potential to be replicated in other flood-prone areas.

Natural Sciences or often known as (IPA) is a subject taught in Islamic Elementary Schools. Natural Sciences is the study of humans and the study of problems on how humans themselves develop their lives better. This study aims to determine the achievement of the science learning program of making simple water filters to improve the knowledge of MI students in Tenaru Village, Driyorejo District. This type of research refers to the Participatory Action Research (PAR) method approach. This method is a learning approach to solve problems, meet practical needs in society, produce knowledge, and encourage social change in society. Data analysis techniques in the Participatory Action Research (PAR) method for the science learning program of making simple air filters are carried out comprehensively and participatory. Data collection techniques are carried out through observation, conducting direct interviews to measure their level of knowledge, and documentation of practical results. The results of the study indicate that the science learning program of making simple air filters to improve the knowledge of MI students in Tenaru Village, Driyorejo District has proven effective in improving students' understanding of the concept of water filtration and the importance of maintaining water cleanliness. Through hands-on activities, students can observe the filtration process in action, understand the function of each layer of material, and gain a fun and contextual learning experience.

This research aims to design and build a web-based interactive photo booth application with layout, filter, and frame features using object-oriented programming concepts. The application was developed as an alternative solution to digital photo booths that can be accessed directly through a web browser without the need for additional installation. The system development method used is the Waterfall method which includes the stages of needs analysis, system design, implementation, and testing. The technology used in application development includes HTML, CSS, JavaScript, and the use of Web APIs to access the device's camera and process images in real-time. The results of the study show that this web-based photo booth application is able to run well on modern browsers, providing photo capture features, layout settings, filter application, and interactive frame addition. The implementation of object-oriented programming results in a more modular code structure, is easy to understand, and facilitates the development and maintenance of future systems. Thus, the developed application can become a practical, flexible, and easy-to-use digital photography medium.

Water is an essential need for all living things on Earth to support various vital biological processes. Without water, life cannot exist because of its role as a solvent, nutrient transport medium, and temperature regulator. Water in nature does come from various sources such as rivers, lakes, rain, and groundwater, which are not all clear because they are contaminated with particles or other substances, in contrast to mountain springs which are often purer. In this study, a water filtration system was created aimed at making turbid water purify to be suitable for use by assessing the NTU (Nephelometric Turbidity Unit) of turbid water due to suspended particles such as mud or sediment, thus producing clear water suitable for use for household or irrigation purposes. The use of two Siemens S7-1200 PLCs as controllers in the water filtration system is a reliable redundant approach to automate mechanisms such as pump, valve, and NTU sensor settings. PLC 1 is used for the filtration system and PLC 2 is used for the water distribution system. The water distribution process uses a DC pump that runs when it receives input from the water level sensor in the raw water tank and clean water tank. The water filtration process has three main stages: reading the water turbidity level using a turbidity sensor, regulating the water flow rate using a solenoid valve, and filtering the water using filter media. The system's operation can be monitored and controlled through a SCADA system. Both PLCs are connected using an OPC server for communication between the PLC and SCADA. The OPC server sends data from the PLC to the Wonderware InTouch application as the SCADA system. To monitor and control the SCADA system, users must log in to access the system.

This study was conducted to address contamination risks in Refill Drinking Water Depot (DAMIU) operations when sanitation, equipment maintenance, and quality control are not consistently implemented. This emphasizes the critical importance of systematic risk monitoring and review processes to ensure water quality and safety. The research aims to analyze the implementation of risk monitoring procedures, identify operational risks at each processing stage, and evaluate the effectiveness of risk mitigation strategies at Depot Isi Ulang Air Galon Barokah. A descriptive qualitative approach was employed, utilizing data collection techniques including in-depth interviews, direct field observations, and documentation analysis. The findings reveal that monitoring and risk review processes are conducted routinely, encompassing raw water quality checks, equipment sanitation protocols, and customer gallon container inspections. No significant risks were identified during the study period, as potential hazards such as microbiological contamination and equipment malfunction were effectively prevented through timely filter replacement and daily equipment cleaning procedures. Overall, the depot's risk management system operates effectively and consistently maintains water quality standards, ensuring product safety for consumers.

Clean water scarcity continues to be a major issue in several regions, particularly in areas affected by seasonal drought and limited access to proper sanitation infrastructure. This community service program aimed to empower local communities by providing training on making simple water filters using affordable and locally available materials. The training was conducted through participatory and practical approaches, including lectures, demonstrations, and direct practice involving 30 community members from areas identified as prone to clean water crises. Participants were introduced to the concept of water quality, contamination sources, and simple filtration technology. The materials used in the filters included sand, charcoal, gravel, and plastic bottles, which are easy to obtain and environmentally friendly. The results showed that participants not only understood the principles of water filtration but also demonstrated the ability to construct and operate effective filters that improved water clarity, odor, and safety for household use. The training also fostered awareness of environmental conservation and self-reliance in solving local water issues. Overall, the program successfully increased community capacity and contributed to sustainable clean water management through simple and practical technological innovations.

Clean water is a fundamental necessity; however, many regions still struggle to access it due to contamination by suspended particles, organic matter, and harmful microorganisms. This activity aims to strengthen the practical competence of Biology Education students at Universitas Negeri Medan through training in making simple water filters. The training was conducted through demonstrations and simulations using turbid water from the Tembung River as a sample. The filter was constructed from readily available materials such as used plastic bottles, cotton, tissue, sand, small gravel, and palm fiber arranged in layers. The results showed that the filter effectively reduced water turbidity and enhanced students’ skills in clean water treatment technology. The training also encouraged students to develop 21st-century skills such as critical thinking, problem-solving, and collaboration, while preparing them as future educators capable of raising community awareness about the importance of maintaining water quality. Therefore, this training has the potential to be developed as an applicative environmental education model that contributes positively to clean water provision.

The POSEIDON 2025 program is a community service initiative focused on enhancing environmental resilience and improving the welfare of coastal communities in Kalijaga Hamlet. The program began with a series of surveys aimed at identifying environmental conditions, social dynamics, and the main issues faced by local residents. The survey results revealed rapid sedimentation, accumulated waste along the coastline, and seawater intrusion that rendered groundwater unfit for consumption. Based on these findings, several solution-oriented activities were designed, including the installation of a water filter in the mosque, seminars and socialization on the functions and conservation of mangroves, the planting of 100 mangrove seedlings, the restoration of the Community Hall with the addition of an environmental-themed reading corner, and a beach clean-up activity. The program was carried out over three days with the involvement of local residents, students, academics, and social organizations. The implementation results showed an increase in public awareness of the importance of protecting mangrove ecosystems and coastal cleanliness, improved access to clean water, and enhanced environmental literacy among children. This program demonstrates that interdisciplinary collaboration and active community participation play a vital role in achieving sustainable and resilient coastal development.

Environmental health risks, including air pollution, unsafe water, and climate-sensitive diseases, remain pressing global challenges that continue to threaten public well-being. Conventional monitoring systems are typically manual, costly, and geographically limited, making it difficult to provide timely and accurate data for intervention. This study explores how digital health technologies—specifically mobile health (mHealth), the Internet of Things (IoT), artificial intelligence (AI), and remote sensing—are applied to strengthen the monitoring and management of environmental health risks. A structured literature review was carried out by synthesizing 87 peer-reviewed articles published between 2013 and 2024, using an evaluation framework built on keyword clustering, metadata filtering, and multi-criteria scoring to assess usability, scalability, interoperability, and relevance to health outcomes. Findings show that mHealth platforms are highly accessible and user-friendly but often face limitations in integration with broader health systems. IoT and AI technologies offer strong scalability and predictive capability, particularly in real-time risk detection, though they are hindered by interoperability issues across platforms. Meanwhile, remote sensing is powerful for capturing large-scale environmental data but lacks direct connections to health-specific applications. The analysis identifies a critical gap in the integration of these technologies, emphasizing the need for cross-sector collaboration to build more robust, interoperable systems. Additionally, the findings highlight the importance of ethical considerations, validation processes, and interdisciplinary approaches to ensure sustainable and impactful implementation. Overall, this study provides not only a comparative synthesis of current practices but also a methodological roadmap to guide future digital innovations in environmental health. By bridging technological potential with practical application, it underscores the urgent need for integrated strategies that can better address the growing complexity of environmental health risks in the modern era.

Based on the results of this study, the following conclusions can be drawn: 1. The results of the analysis of the influence of the type of gill net mesh on lobster catches, the difference in mesh size of gill nets (gillnets) 1.5 inches and 2.25 inches significantly affects the size of lobsters (weight (Kg), total number (kg) of fish caught in the waters of Seluma Regency. 2. The size of the lobster caught is greatly influenced by the size of the gill net mesh mess size, the size of the 1.5 inch mess size gets lobsters with a size of 50-99 grams with a total of 42.0 kg or 14% of the total catch, while the bigger the lobster, the easier it is to avoid the net that can make them get caught, the smallest results were obtained from the 1.5 inch mess size, namely 23.80 kg or only 10% with a lobster size of more than 150 grams. While for the 2.25 inch mess size, the least number of lobsters was obtained from lobsters with a size of 50-99 grams because with that size, the lobster can easily avoid and the highest lobster catch results obtained as much as 76.10 kg or 25% of the total lobster catch with the largest size at 100-149 gr. 3. The best gill net mesh size used refers to the basic size of the target catch, the best gill net used is a mesh size of 2.25 inches, because this size net filters small lobsters to escape and catches large lobsters to be caught and can be traded because it does not violate existing regulations.

The issue of clean water supply has become a serious problem in Baliloku Village, Wanokaka, West Sumba. Water quality has been continuously declining each year due to the El Niño phenomenon. Bore wells serve as one of the water sources for the residents of Baliloku Village. However, the substandard water quality forces residents to fetch water from the river, which contains lime and mud, without undergoing any treatment. One of the water treatment methods that can be applied by residents is the use of water filters. This activity aims to help provide clean water suitable for daily activities through the construction of a water filter tower in Baliloku Village. This research is beneficial in improving water quality by reducing the particles contained in lime and muddy water. The construction of this filter utilizes filter sand and activated carbon. The community service method applied is participant observation, which involves direct participation in building the water filter tower in Baliloku Village. The results of this activity indicate a positive change among the residents of Baliloku Village, as they have started using clean water for their daily activities and are capable of maintaining the water filter according to the provided guidelines.

Boilers are auxiliary aircraft on ships that function to produce steam to support the performance of machinery that requires steam to operate. On the ship where the author practices, flame failure often occurs in the auxiliary boiler burner so that ship operations are disrupted. The purpose of this research is to find out what are the causes of flame failure in the auxiliary boiler burner, the impact caused, and the efforts made to overcome these problems. This research uses a qualitative descriptive method to obtain information / data from the occurrence of flame failure on the auxiliary boiler burner on the MV. Sky Free. Data collection techniques were carried out by observation, interview, and documentation. From the results of the study it is known that the causes of flame failure in the burner are dirty nozzles and filters on the nozzle, carbon buildup in the combustion head and furnace, and the distance between ignition electrodes that are too tenuous. The impact of the flame failure is a decrease in steam production which results in low fuel temperatures and not optimal main engine jacket water pre-heater so that ship operations are disrupted. Efforts to overcome flame failure in the burner are to maintain the fuel system leading to the boiler, burner components, and boiler combustion chamber routinely, and to readjust the electrode distance according to the manual book.

Microplastic pollution, particularly from textile waste, has become a significant environmental concern, especially in urban runoff systems. These pollutants pose a considerable threat to water quality, aquatic life, and human health. Traditional wastewater treatment methods often fall short in addressing the complexities of microplastic contamination. This research explores the integration of advanced biodegradable polymer coatings with solar-powered textile waste treatment to reduce microplastic pollution in urban runoff systems. Biodegradable polymers, such as polylactic acid (PLA) and polyhydroxyalkanoates (PHA), are highlighted for their potential to efficiently filter microplastics while providing an eco-friendly alternative to conventional filtration technologies. By combining these materials with a small solar-powered unit, the prototype enables an off-grid, low-energy solution to treat textile wastewater in urban environments. The study includes testing the prototype in simulated urban runoff conditions with varying concentrations of microplastics, evaluating key performance indicators such as microplastic removal efficiency, energy consumption, and operational sustainability. Results demonstrate a significant reduction in microplastic concentration, indicating the effectiveness of biodegradable polymer coatings and solar-powered systems in treating urban runoff. The discussion addresses the feasibility of using local biodegradable materials, performance in real-world urban environments, and operational challenges such as maintenance and scalability. This innovative approach is compared with existing microplastic filtration methods, such as membrane filtration and adsorption, highlighting its advantages in terms of sustainability and cost-effectiveness. The findings suggest that this integrated system could offer a viable, low-cost solution for addressing microplastic pollution in urban drainage systems, with potential for widespread urban implementation.

Indonesia's cigarette industry has experienced significant growth, contributing substantially to economic development and work opportunities. However, the production process generates wastewater containing pollutants like BOD, COD, TSS, NH3-N, phenol, and pH imbalances, which pose environmental risks. This study aims to evaluate the quality of wastewater from the cigarette industry and analyze the treatment technologies used to meet environmental standards. Using qualitative methods and secondary data from relevant industries, the research shows that cigarette industry wastewater is highly polluted and requires multiple treatment stages before being discharged into surface water. Key technologies include collecting tanks, equalization tanks, coagulation-flocculation, clarifiers, and trickling filters. The findings provide valuable insights into waste management challenges and propose solutions to support environmental sustainability in the cigarette industry.

Red roses (Rosa damascena Mill) are a type of rose with a distinct aroma and a deep red color. Roses are usually used as decoration, but it also has health benefits. Roses have bioactive compounds and anthocyanin pigments that act as antioxidants. The expected outcome of this research is to produce rose water products that have a strong aroma and have high antioxidant activity. This study used a factorial Completely Randomized Block Design (RAKL) method. The factor used is the variation of the distillation method. While the length of the extraction process was used as the sampling time. The correct distillation method to produce rose water which has high antioxidant activity is treatment with variations of the steam distillation method. The steam distillation method obtained the following results: pH 4.07, vitamin C content 40.70 mg/100g, total phenol content 47.10 mg GAE/g, antioxidant activity of DPPH 64.20%, FRAP value 98.97% and sensory test (scent) 3.34.

Water is one of the things that is important for life, it is even more important if the water that is obtained can provide other benefits. This is the case for freshwater fish breeders in the Kemuning tributary of the North Banjarbaru River, South Kalimantan.  Water is an important variable because water is the medium where fish live. Freshwater fish of good quality are a superior commodity for fisheries cultivation in Indonesia in general. This aquatic organism is the same as freshwater fish in general which breathe using gills (operculum).  The treatment of the freshwater fish cultivation process requires a flowing water media system with sufficient oxygen content.  For this reason, several tools are needed to maintain the quality of pool water, namely a pool water filter (filter), a water suction and spray tool to regulate water circulation and an aerator to produce air bubbles. In this service activity, a water filter will be made with physical and chemical substrates to filter pond water with a water circulation system so that the filtered water has good water quality to support the life cycle of freshwater fish.  As power to run the supporting equipment in the water filtering system, electricity is used by utilizing sunlight using solar cells. In this community service activity, to overcome existing problems, a pool water filter will be made with physical and chemical substrates. Making freshwater fish pond water filters using Bioring, Charcoal, Japmate, and Bio Foam substrates, where these 4 substrates provide good water quality results, namely, temperature 28.1–30.30C, pH7.4–8.1, DO 5.246 .53mg/L, NH 30.06–0.40mg/L, NO2 0.056–0.90mg/L and NO3-0.28–0.190 mg/L, the highest survival test (SR) in the bioring treatment was 86, 66%, the feed conversion ratio (FCR) test yielded a result of 3.10%. Meanwhile, the specific growth rate (SGR) test for freshwater fish was found to be 1.15%.  However, of course, the more important target is to provide knowledge about good freshwater fish cultivation for residents of the Kemuning tributary, Loktabat Utara Banjarbaru Village, with an increase in knowledge of approximately 85% from before the PPM activities. The main output of this activity is an accredited Community Service Journal, in addition to water filtering equipment products with physical and chemical filter substrates.

Vertiqua is an innovation in vertical cultivation on limited land and water. Vertiqua continues to be developed to be effective in cultivating fish. This research aims to examine the effectiveness of nitrogen distribution in vertiqua using biofical top filters. The analysis used is quantitative analysis by calculating and testing the data that has been collected. Total nitrogen feed input, total nitrogen wasted, and percentage of nitrogen absorption were calculated using existing formulas. Comparative testing using the T – test on the Mini Tab application was carried out to test the effectiveness of nitrogen absorption. The research results showed that nitrogen absorption in the vertiqua using the top biofical filter was effective, ranging from 198,12 – 200,89 mg/l. Nitrogen absorption in the vertiqua without using a biofical top filter ranges from 42,75 – 43,35 mg/l. The distribution value of effective nitrogen absorption in vertiqua using the top biofical filter is shown by a P value <0,05. Vertiqua with a biofical top filter is also able to reduce nitrogen levels so that fish survival is good.

Vertiqua biofical top filter is a cultivation technique with a recirculation system that utilizes limited land. Vertiqua is a solution for cultivation. When cultivating koi fish in vertiqua, the feed capacity increases and there is a high nutrient load so that the waters are easily polluted, therefore the presence of an upper biophysical filter can reduce pollution. This is important to study, especially the structure of the phytoplankton community because it is one of the biological indicators of ponds in koi fish cultivation. This research was carried out for 6 weeks in Sindangpalay Ciberem Sukabumi. The research was carried out by taking phytoplankton in the vertiqua at intervals of once every 2 weeks. The data analysis in this research is abundance, diversity, uniformity and dominance. During the research results obtained were abundance 636-673, diversity 2.6, uniformity 0.9, and dominance 0.01. The water quality studied was ammonia, nitrate, nitrite, phosphate, pH, DO, turbidity and temperature. These waters are stable and healthy, which is a positive indicator to support fish farming activities. The water quality in Vertiqua is classified as good and the ecosystem is balanced, these waters are ideal for supporting the productivity and health of farmed fish.

Limited land resources are a problem for fisheries, especially in urban areas. So the need for a new innovation in the field of fisheries for cultivation. Vertiqua (Vertical Aquaculture) is an innovation in vertical cultivation in limited land and water. The Vertiqua system as a cultivation medium has not been effective in increasing fish growth due to slow growth and high ammonia levels. Therefore, innovation is needed to increase the effectiveness of Vertiqua, namely by using the upper biofical filter. The data used to analyze is descriptive analysis by describing and describing the data that has been collected. Growth in length, weight, and survival, length-weight relationship, daily length growth rate, daily weight growth rate, and water quality were calculated using existing formulas. Comparative testing of growth was calculated using the T-test on the Mini Tab application. The results of the research showed that the top filter biofical vertiqua was able to increase the growth of koi fish. The growth value of the top biofical filter vertiqua is effective when compared to the soil pond. this is indicated by the value P<0.05. The upper biofical filter vertiqua system is also able to maintain the stability of water quality and suppress ammonia levels so that fish growth and survival are good. The vertiqua system with the upper biofical filter has an effect on fish growth, this is supported by the upper biofical filter, which is able to maintain water quality and suppress ammonia levels so that fish are not stressed and feed can be utilized properly.

Land and water sources are important in cultivation activities. Efforts to overcome the problem of limited land and water for cultivation include technology development. One of the technologies being developed is vertiqua. The Vertiqua that has been developed, both with and without biophysical filters, still has weaknesses, namely high levels of ammonia. Therefore, a biofical modification was carried out, namely using a biofical top filter to increase the effectiveness of reducing ammonia levels to support fish growth in the vertiqua. The aim of this research was to test the effectiveness of the biofical top filter on the rate of reduction in ammonia levels in the vertiqua. The research design was carried out using a Completely Randomized Design (CRD) for one treatment with three repetitions, in this study with an upper biophysical filter as treatment and three vertiquas as repetitions. The data analysis carried out in this research was an experimental method. The results of the research are presented in the form of graphs, tables and narratives using Microsoft Word and Excel. As for testing, the research sample was tested with the middle value using Microsoft Excel and Minitab 21 by comparing the test results with the standard. According to the research results, the use of an upper biophysical filter can have an effect on maintaining physical and chemical water quality parameters (P<0.05) so that they comply with quality standards. However, there are several water quality parameters that do not comply with quality standards, such as pH and nitrite. The use of the upper biophysical filter type in the vertiqua koi fish cultivation system has an effect on reducing ammonia and maintaining water quality so that it meets quality standards. However, the nitrite value at the beginning was high, but after two weeks of testing the value began to decrease, indicating that the upper biofical filter was running optimally.