COMPARATIVE STUDY ON POLLUTION POTENTIAL OF DAIRY WASTEWATER GENERATED BY ORGANIZED AND UNORGANIZED SECTORSEEMA GARCHA, N. VERMA AND S.K.BRAR
The aim of the present investigation was to document characteristics exhibited by the dairy wastewater generated by the organized and unorganized sector. Thirty samples were collected from each sector and analyzed for various pollution parameters as per standard procedures. The analysis of various parameters showed that the effluent generated from unorganized sector is richer in organic content as their C:N ratio (37.6) was over three times the C:N ratio for organized sector wastes (11.9). pH of dairy waste water generated by both the sectors varied between 3.0 to 8.3. 90% of the samples drawn from unorganized sector were markedly acidic compared to only 56.6% samples from the organized sector. In the unorganized sector average oil and grease content of samples was recorded as 1792.67 mg/L and for organized sector it was recorded as 919.33 mg/L. Total suspended solids ranged between 1000 - 15000 mg/L for unorganized sector and 500- 3000 mg/L for organized sector. Average BOD3 of samples collected from unorganized sector was 10,820.23 mg/L which was higher in comparison to the average BOD3 of the samples collected from organized sector which was 2196.61 mg/L. The results were analyzed statistically using Graph Pad and the variations in observations of all the parameters were found to be statistically significant at 95% confidence interval. There is limited information available about the characteristics of the effluent of the unorganized sector. Significant variations between major pollution parameters warrants different treatment approaches for effluents generated by these two sectors.
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