Evaluation of environmental standards compliance in the cement industry: a case study of Tanzania Portland Cement Co. Ltd (Wazo Hill Factory)

Environmental compliance is one of the challenges that face many industries. This study, therefore, aimed to evaluate the level of compliance of the environmental parameters at TPCC against the already established environmental standards. The parameters assessed in this study included noise level, stack emission, and ambient air quality. The methodology used included point source measurements and Method 1-5 of the US EPA which clearly stipulates the procedures for determination of particulate matter emissions. The study revealed that the levels of particulate matter were within the standards (both TBS and IFC standards). But the levels have been noted to be slightly increasing compared to the previous studies which were already conducted at the site. For Kiln 3, the particulate matter showed a measurement 49.77 mg/Nm3, corr. For Kiln 4, the measurement indicated 38.73 mg/Nm3, corr. The nitrogen dioxide concentrations in Kiln 3 have revealed that the concentrations were within the TBS/ISO standards with the measurement of 1322.88 mg/Nm3 Corr but it was above the permissible emission limit as per IFC standard of 600 mg/Nm3 corr. The study has noted that the performance was within the acceptable limits with slight increment to some of parameters. It is therefore that commitment and investment should continue to ensure that the emissions are always within the acceptable limits.