Quality Appraisal of Old and New ( Greater ) Water Works in Makurdi . Benue State Nigeria
Abstract
The increase in the level of pollution of river Benue due to human activity has necessitated the analysis and the evaluation of treated water at the greater water works in Makurdi to know if the water is really free from hazardous or dangerous chemical pollutants , to prevent water users from infection and water borne diseases and to see if water quality standards are adhered to . The new water works commissioned recently in Makurdi Benue State christened GREATER WATER WORKS is estimated to be …50,000m3/ day capacity and 3x more than the former old water works which was18,000m3 /day . The quality of water was done on the raw water from the intake which is River Benue, the old and greater water works . Considering the statistics already existing of the quality of water in the old water works , the following were assessed. Turbidity was assesed from an average value of 450.33 treated to 1.45 FTU in the old water works and 0.28 FTU in the greater water works respectively . Color was treated from an average value of 224 to 2.33 TCU in the old water works and 0. 0 in the greater water works respectively. Among the mineral elements , calcium was treated from an average value of 60mg/l to 20mg/l in both old and greater water works respectively, magnesium was treated from the average of 26.7 to 20mg/l while nitrates were treated from an average value of 38.4 to 8mg/l in old water works and 7mg/l in greater water works respectively. Bacterial load of 1800 in raw water was treated to 1.0 in the old water works and 0.0 in the greater water works. The treatment chemicals were not altered in this new scheme apart from increase in application due to expansion in capacity . Introduction of hrodrocyclone removes sand and gravel while filtration is carried out after aeration in order to remove the iron in water through coagulation . This was not the case in the old water works , these essentials were absent .
Keywords Analysis , Equipment , Filtration ,Greater , Water
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ISSN (Paper)2224-3186 ISSN (Online)2225-0921
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