CHEMICAL AND BACTERIOLOGICAL ANALYSIS OF WASTEWATER FROM RESOURCES IMPROVEMENT AND MANUFACTURING COMPANY (RIMCO), NNEWI, ANAMBRA STATE, NIGERIA

This research work was on the chemical and bacteriological analysis of effluents from Resources Improvement and manufacturing Company, Nnewi using the World Health Organisation (WHO) standard (1993) for drinking water and the Canadian Council of Ministers of the Environment (CCME) standard (1999) for irrigated crops and aquatic life criteria respectively. The effluent samples from the company were collected and series of chemical and bacteriological tests were conducted. Samples were collected from three different sources. The results of the series of tests and analyses showed that a number of parameters tested such as iron, lead, manganese, turbidity, colour, etc. were higher than the WHO standards for drinking water. Parameters like turbidity, Total Suspended Solid (TSS), and chloride were higher and some like sulphates were lower than the recommended Canadian Council of Ministers of the Environment (CCME) standard for irrigation. Again, parameters like dissolved oxygen, nitrate and pH were lower and some like turbidity and iron were higher than the recommended CCME standards for aquatic life. The total Coliform and E. colicount per100ml were higher than limit set for irrigated crops using the CCME criterion. It is, therefore, recommended that the effluents from Resources Improvement and Manufacturing Company should be treated to an intended standard before been discharged to the environment. It is also recommended that further work on this should be focused in the area of aquatic life and irrigation water which were not well covered in this work