Environmental Hazards of an Unrecultivated Liquid Waste Disposal Site on Soil and Groundwater

Disposal sites without adequate engineering controls pose a significant risk to the environment. In the present study, the environmental hazards of an abandoned and unrecultivated liquid waste disposal are investigated with a special focus on soil and shallow groundwater contamination. After a period of operation from 1994 to 2010, when the wastewater collection of the municipality was regulated, the disposal site was subsequently decommissioned without further action. Eight monitoring wells have been established in the disposal basins and in the surrounding area to determine the contamination of the site. Sampling took place in the summers of 2020 and 2021. The results of the analysis of the soil and water samples collected showed a high level of contamination in the area. In the borehole profile of the infiltration basin, a well-developed leachate nitrate profile was observed, with a concentration above 3000 mg/kg NO3−. The soil phosphate content was also significant, with a value of over 1900 mg/kg in the upper 40 cm layer. Extremely high concentrations of ammonium (>45 mg/L) and organic matter (>90 mg/L) were detected in the groundwater of the basins, indicating that contaminated soil remains a major source of pollutants more than 10 years after closure. For all micro- and macroelements present in detectable concentrations, a significant increase was observed in the infiltration basin. Our results have revealed that the surroundings are also heavily contaminated. NO3− concentrations above the contamination limit were measured outside the basins. Recultivation of liquid waste disposal sites of similar characteristics is therefore strongly recommended.

Efforts For Empowerment and Dry Waste Management Using A Waste Bank System in Kepuh Village, Kertosono District, Nganjuk Regency

The issue of waste management is still a thorny problem for Indonesia. This is because most of the waste produced by households still ends up in the Final Disposal Site (TPA). Meanwhile, the capacity of landfills, especially in big cities, is getting full. In fact, it is not easy to find land to open a new TPA to accommodate the garbage collected from the community. The purpose of this community service is to teach the residents of Kepuh Village to process household dry waste. The qualitative method used in this activity uses socialization and guidance. The stages in data analysis using qualitative methods are data reduction, data presentation, and drawing conclusions. The results of the discussion in this community service are [1] Implementation of Waste Bank Socialization at the Chairman's House [2] Dry waste collection [3] Waste sorting at Residents' Houses and [4] Implementation of waste bank at Village Hall. The conclusion is that people do not understand the effect of dry waste disposal on the environment, fostering independence with dry waste processing practices.

Isolation and identification of protease‐producing bacteria from sludge and sediment soil around Adama, Ethiopia

Proteases are enzymes used in industries such the production and processing of detergents, food, leather, and silk. The aim of this study was to isolate and identify protease‐producing bacteria from a sludge disposal site and from sediments. Soil samples were collected separately from the selected area. Samples weighing 1 g were serially diluted and spread onto skim milk agar. A total of 16 bacteria species were isolated from the study samples. Four bacterial isolates showed high proteolytic activity and were selected for enzymatic study based on their zone of proteolysis. The isolates were identified based on biochemical tests. The results indicated that the isolated bacteria were E. coli (99.69%), Pseudomonas putrefaciens (Shewanella putrefaciens) (91.61%), Bacillus carboniphilus (92.78%), and Lysinibacillus sphaericus (98.4%). The crude protease enzymes produced by these bacterial isolates showed promising results for application in dehairing and destaining as detergent additives. Bacillus carboniphilus showed the best level of activity and was selected as the most potent protease‐producing bacteria for both dehairing and destaining ability. Soils from sludge disposal sites and sediments from around tannery wastes could be good sources from which to isolate alkaline protease‐producing bacteria.

INCREASING COMMUNITY PARTICIPATION IN MAINTAINING CLEANLINESS AND HEALTH TO REALIZE COMFORTABLE TOURISM VILLAGE IN THE VILLAGE OF RINDU HATI

A clean and healthy tourist village is the main attraction for visitors because the beautiful and clean environment makes visitors feel comfortable. Based on the results of the FGD conducted by the University of Bengkulu LPPM in the village of Rindu Hati, several problems were found, such as the cleanliness of the village, the absence of a garbage disposal site. This of course can cause various problems for visitors and the community, one of which can affect public health and the environment. Efforts that can be made are the Guidance of Clean and Healthy Life Behavior (PHBS). The purpose of this community service activity is to provide education to the Rindu Hati village community so that they can maintain environmental cleanliness and health through the proper and correct application of PHBS, increase community knowledge and skills in managing household waste and environmental waste, and improve community skills in disease management. environmental impacts and independently in preventing and overcoming the health problems it faces. The methods used are: health education about waste management, training to utilize waste. The participants who took part in this activity were 50 people consisting of environmental groups, PKK cadres, health cadres, village officials, and housewives. The results of this community service activity show an increase in community participation in maintaining environmental cleanliness and health, this can be seen from the community's ability to implement PHBS and utilize waste that has economic value.

Pemberdayaan Masyarakat Melalui Pemanfaatan Sampah Anorganik Menjadi Produk Kerajinan yang Bernilai Ekonomis

Inorganic waste is a type of waste that is difficult to decompose naturally by microorganisms. Inorganic waste processing is carried out by collecting, disposing and transporting it to the final disposal site (TPA). There needs to be an effort to utilize inorganic waste, especially plastics, into useful products. People in Limbungan Village, Rumbai Pesisir District, Pekanbaru City already have a waste bank, but the benefits have not been felt by the community because inorganic waste is still being disposed of. There is a need for efforts to socialize and educate the public to process inorganic waste into handicraft products that have economic value. The method is carried out by educating the public about waste processing in general and demonstrating the use of plastic waste into handicraft products. After the counseling was carried out, the community had knowledge about waste management in general and skills in processing plastic waste into handicraft products such as bags, candy containers that were suitable for use and worthy of sale

Investigation of Potential Environmental Impacts and Sustainable Management of Municipal Solid Waste using the Driving force-Pressure-State-Impact-Response-Outcome (DPSIRO) framework: Case of Bahir Dar, Ethiopia

The generation of MSW in urban areas in Ethiopia and elsewhere continues to increase and poses a challenge to city governments and citizens if the wastes are not properly managed. Applying an integrated system for managing MSW and recovering the material for use in new products can reduce the negative impacts on the environment. The purpose of this study is to apply the DPSIRO framework to develop a system that reduces the negative impacts of MSW in Bahir Dar city in a sustainable way. The research started by identifying the main driving forces that lead to the generation of MSW. Then, states because of pressures and the consequent impacts were investigated. Finally, the appropriate responses and outcomes obtained from the responses were dealt with. Methods used to quantify GHG emissions, leachate, and eutrophication potential were applied. According to the findings, the waste disposal site emits an estimated 46Gg of greenhouse gases per year in 2020.The eutrophication capacity of organic waste generated in the city was 0.0594 Kg N-equivalent or 59.4g N-equivalent. The waste also contains an average of 1,112mm of leachate per day on an annual basis. The state of the environment has an impact on human health and the ecosystem. Applying the circular economic system, knowledge transfer, and waste management fees are the main responses suggested to decision and policy makers. The responses correspond with balanced economic, social and environmental situations. Outcomes were quantified in terms of organic fertilizer, income and renewable energy (briquette) when the actions were taken.

Municipal Solid Waste Disposal Site Selection Using Remote Sensing Technology and AHP Process (Case Study: Khesht city, Fars Province, Iran)

The design and implementation of the municipal waste management system aim to solve the urban issues and ultimately contribute to the citizens' health and welfare. The first step in this system is to select a site for the safe disposal of wastes. This survey aimed to select the most suitable landfill site for municipal solid waste using the geographic information system (GIS) and the analytic hierarchy process (AHP) model following the environmental, economic, and engineering criteria. Therefore, by reviewing the literature and backgrounds, the parameters required for locating the landfill site were extracted, and the most important ones (15 sub-criteria) were selected and divided into four groups. The results showed that the sub-criterion of distance to the river with the weight of 0.218 was identified as the most critical parameter, followed by groundwater depth. In this way, the flooding parameter with the weight of 0.010 was considered the least important variable. In addition, it was found that the moderate suitability class with 50% of the area had the highest area, and the very high suitability with 0.8% had the lowest area. The inconsistency rate was equal to 0.04, which illustrates the high consistency of matrices. Then, the overlaying was carried out, and three sites were determined as the best place for a landfill in Khesht county.