The results of statistical tests. In part to test the effectiveness of reducing Nitride – N retention time HRT to find that all is not significantly different (P < 0.05) but summer can reduce the amount of Nitride – N over the rainy season and the winter are significantly (P < 0.05) for the statistical test results. In part to test the effectiveness of reducing Nitride – N to the Area, found that the Area and season, there is no significant difference (P < 0.05).The results of statistical tests. In part to test the effectiveness in reducing Nitrate – N with the retention time HRT found that 3 days is better than 2 and 1 day is significant (P < 0.05) but the rainy summer and winter. No significant difference (P < 0.05) for the statistical test results. In part to test the effectiveness in reducing Nitrate – N to the Area, found that the Area number 3 best and rainy season, there is a difference. From the summer and winter are significantly (P < 0.05).The results of statistical tests. In part to test the effectiveness of reducing phosphate (PO4-P) with the retention time HRT found that 3 days is better than 2 and 1 day is significant (P < 0.05) but the rainy summer and winter. No significant difference (P < 0.05) for the statistical test results. In part to test the effectiveness of reducing phosphate (PO4-P) to the Area, found that the Area number 3 best and rainy season, there is a difference. From the summer and winter are significantly (P < 0.05).
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