Title: An Examination of Noise Pollution from Aggregated Grinding Mills in Designated Markets in Anambra State, Nigeria
Authors: N. M. Okafor, F. I. Ikegbunam and E. B. Tambe
Volume: 8
Issue: 11
Pages: 6-15
Publication Date: 2024/11/28
Abstract:
This study analysed the environmental noise pollution generated by the clustered grinding mills in Anambra State in relation to NESREA and World Health Organization (WHO) standards and thresholds and suggested ways of minimizing noise levels in the workplaces by grinding Mill operators. The research was anchored on Relational Event Theory. The study employed a survey research design. The study population comprised 242 mill operators, purposively selected from six marketplaces across three senatorial zones of Anambra State, resulting in a sample size of 242. Data were acquired from both primary and secondary sources. An MS6701 Digital Sound Level Meter with a range of 30-130 dBA was employed to assess noise levels over three days during morning, afternoon and nighttime times. Descriptive and inferential statistics were used for the data analysis and the test hypothesis was done at a 5% significant level. The result of one sample T-test revealed that the average noise levels of 85Db per hour at the mill in the six markets were significantly different (p<0.05) from the prescribed acceptable noise levels of 65Db per hour set by WHO and NESREA. Consequently, it was concluded that the operation of grinding mills contributes to noise pollution in their vicinity. The study advocated for the utilisation of safety devices such as eco-barriers, earmuffs, earplugs, and ear canal covers by operators, as well as relocating grinding mill activities away from large markets to mitigate public exposure to elevated noise levels.