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Waste Water Evaluation and Management Part 11

Tham khảo tài liệu 'waste water evaluation and management part 11', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Water Quality of Streams Receiving Municipal Waste Water in Port Harcourt Niger Delta Nigeria 289 R2 0.59 . Correspondingly the faecal coliform concentrations followed similar seasonal and spatial pattern as observed but concentrations were lower by a magnitude of about 4 times with concentrations for dry season 63.22 7.64 - 103.85 12.83cfu 100ml being higher than of the wet season 114.85 7.25 - 155.34 28.01cfu 100ml Table 1. 3.2 Agbonchia Temperature values were high with wet season 26.43 1.13 - 26.47 1.12oC values not remarkably different from the dry season 26.83 1.38 - 27.17 0.73oC but spatially distribution amongst the study stations indicated significant difference in wet season R2 0.75 while dry season temperature distributions were not significant R2 0.39 Table 1. In dry season water pH ranged from slightly acidic to neutral while wet season pH was for all the stations above neutral value. Spatial distributions amongst the stations were significant in dry season R2 0.99 indicating differences in distribution while wet season values were not significant R2 0.25 . Carbon dioxide concentrations were considerably higher in the dry season than in the wet season with values almost increasing down stream for both seasons and differences between the stations were significant for wet R2 0.79 and dry season R2 0.60 . Dy season concentrations demonstrated closer affinity than that of wet season Table 1 . Alkalinity values for both seasons increased down stream and were relatively higher in the dry season 4.50 1.45 - 7.0 3.05 mg l than during the wet season 4.22 2.1 - 6.57 2.46mg l . Spatial differences between stations were positively significant for wet R2 0.95 and dry season R2 0.93 . Similarly water hardness increased down stream for both seasons and concentrations were higher in the wet season 4.93 4.50 - 107.66 131.78mg l than during the dry season 5.12 2.87 - 60.80 76.12mg l . The distribution between the stations were significant for wet R2 0.75 and dry R2 0.76