The concentration of NNorganic never surpassed the average of
of 2.5 mg L1, regardless of the rate adopted. This value shows that,
although the bed nitrification capacity was reduced, the ammonification
was still effective. The hydraulic loading rate of 700 L m2
day1 was the
first after which the concentration of NNH4
+
surpassed 20 mg L1. This is the threshold value provided for under
the Brazilian laws for discharge into water streams (CONAMA 357,
2005). In point of fact, until the rate of 500 L m2 day1, effluents
remained below the threshold established under the Brazilian laws
(Table 6). From the application of 700 L m2 day1 on, 77.3% of the
tests yielded results that did not fulfill the said threshold in the
aforesaid laws.
ความเข้มข้นของเอ็น The concentration of NNorganic never surpassed the average of
2.5 of 2.5 mg L1, regardless of the rate adopted. This value shows that,
although the bed nitrification capacity was reduced, the ammonification
was still effective. The hydraulic loading rate of 700 L m2
day1 was the
first after which the concentration of NNH4
+
surpassed 20 mg L1. This is the threshold value provided for under
the Brazilian laws for discharge into water streams (CONAMA 357,
2005). In point of fact, until the rate of 500 L m2 day1, effluents
remained below the threshold established under the Brazilian laws
(Table 6). From the application of 700 L m2 day1 on, 77.3% of the
tests yielded results that did not fulfill the said threshold in the
aforesaid laws.
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