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首页> 外文期刊>Journal of environmental sciences >Inhibition and recovery of nitrification in treating real coal gasification wastewater with moving bed biofilm reactor
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Inhibition and recovery of nitrification in treating real coal gasification wastewater with moving bed biofilm reactor

机译：移动床生物膜反应器处理真煤气化废水中硝化的抑制和回收

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Moving bed biofilm reactor (MBBR) was used to treat real coal gasification wastewater. Nitrification of the MBBR was inhibited almost completely during start-up period. Sudden increase of influent total NH3 concentration was the main factor inducing nitrification inhibition. Increasing DO concentration in the bulk liquid (from 2 to 3 mg/L) had little effect on nitrification recovery. Nitrification of the MBBR recovered partially by the addition of nitrifying sludge into the reactor and almost ceased within 5 days. Nitrification ratio of the MBBR achieved 65% within 12 days by increasing dilute ratio of the influent wastewater with tap water. The ratio of nitrification decreased to 25% when influent COD concentration increased from 650 to 1000 mg/L after nitrification recovery and recovered 70% for another 4 days.
机译：移动床生物膜反应器（MBBR）用于处理真实的煤气化废水。在启动期间，MBBR的硝化作用几乎被完全抑制。进水总NH3浓度的突然增加是诱导硝化抑制的主要因素。散装液体中的溶解氧浓度增加（从2到3 mg / L）对硝化回收率影响很小。 MBBR的硝化通过向反应器中添加硝化污泥而部分恢复，并且在5天内几乎停止。通过用自来水增加进水的稀释比例，MBBR的硝化率在12天内达到了65％。硝化回收后，当进水COD浓度从650增加到1000 mg / L时，硝化率降低至25％，并在另外4天中恢复70％。

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