Department of Civil & Environmental Engineering, Islamic University of Technology, Gazipur, 1704, Bangladesh.
Department of Technical and Vocational Education, Islamic University of Technology, Gazipur, 1704, Bangladesh.
Environ Sci Pollut Res Int. 2023 Jul;30(31):76421-76436. doi: 10.1007/s11356-023-27853-x. Epub 2023 Jun 2.
Drinking water contamination is one of the most pressing concerns for the people of Bangladesh as they rely on groundwater to meet their water needs. The existing water sources of Bangladesh are losing potability due to natural, anthropogenic, and geogenic factors, resulting in acute to severe health consequences. To address the issue of safe drinking water, researchers are constantly examining potential sources that cause the pollution of drinking water. Through bibliometric and systematic research, the current work seeks to review the past research on microbiological and chemical contamination of drinkable water in Bangladesh. The bibliometric review provides insights into the research trends, notable authors, countries, and institutions, whereas the systematic review unfolds the key research areas, the contamination process, and the strategies used to mitigate the contamination process. The results show that arsenic and various coliform bacteria are the most commonly reported sources of chemical and microbiological contaminants that degrade water quality. The study demonstrates that the most crucial factors influencing arsenic mobilization include microbial decomposition of organic matter (biologically available organic matter, for example, peat), arsenic adsorption by metal-oxyhydroxides, Fe-Mn oxyhydroxide, chemical fertilizers, pond excavation, and altering of groundwater hydrology. The studies also indicated the sources that contribute to the microbiological quality decline. The current work has addressed the scope of future research.
饮用水污染是孟加拉国人民最关注的问题之一，因为他们依赖地下水来满足用水需求。孟加拉国现有的水源由于自然、人为和地质因素而失去了可饮用性，导致严重的健康后果。为了解决安全饮用水问题，研究人员一直在研究潜在的污染源，这些污染源会导致饮用水受到污染。本研究通过文献计量和系统研究，回顾了过去孟加拉国饮用水中微生物和化学污染物的研究。文献计量学综述提供了对研究趋势、知名作者、国家和机构的深入了解，而系统综述则揭示了关键的研究领域、污染过程以及用于减轻污染过程的策略。结果表明，砷和各种大肠菌群是最常报道的化学和微生物污染物的来源，这些污染物会降低水质。研究表明，影响砷迁移的最关键因素包括微生物对有机物的分解（例如，泥炭中的生物可利用有机物）、砷被金属氢氧化物、铁锰氢氧化物、化肥、池塘挖掘以及地下水水文学改变所吸附。研究还指出了导致微生物质量下降的污染源。本研究还探讨了未来研究的范围。
