This study assessed the performance of two pilot units, a conventional activated sludge (CAS) and an Integrated Fixed-Film Activated Sludge (IAS), in the treatment of leachate from sanitary landfill combined with domestic sewage, with the aim of removing organic substances. In order to assess the possible impacts on treatment, three experimental phases were designed using influent leachate contributions of 5%, 10%, and 20% of the total BOD load. Overall, the results showed that no significant changes in the behavior of biological processes. The IAS unit presented average BOD removal efficiencies of above 88%, 87% and 80% for the three leachate load contributions of 5%, 10% and 20% studied. The CAS unit presented lower average efficiency with a 5% leachate contribution (64%), but displayed a similar performance to the IAS unit in the other phases (82% and 80%); similar quantitative aspects were observed for both treatment processes with regards to biomass composition analysis. The kinetic coefficients related to heterotrophic metabolism did not indicate negative effects on treatment efficiency as a result of the increase in leachate addition, with values of 2.8; 2.8 and 2.7 d -1 obtained respectively for each phase with the CAS unit, and 2.0; 1.5 and 1.6 d -1 with the IAS unit, representing similar values to those found in the literature (1.5 a 5.0 d -1 ) . The results reinforced the conclusion that the leachate load introduced did not cause inhibition or significant alterations to heterotrophic metabolism, and, therefore, to the removal of organic matter.
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机译:该研究评估了两种试验单元的性能,传统的活性污泥(CAS)和集成的固定膜活性污泥(IAS),治疗卫生垃圾填埋场与国内污水相结合的渗滤液,目的是去除有机物质。为了评估可能的对待影响,使用5%,10%和20%的总体负荷的流动渗滤液贡献设计了三个实验阶段。总体而言,结果表明,生物过程的行为没有显着变化。 IAS单位呈现平均BOD去除效率超过88%,87%和80%,为三种渗滤液载荷占5%,10%和20%的研究。 CAS单元呈下较低的平均效率,5%渗滤液贡献(64%),但对其他阶段的IAS单元显示了类似的性能(82%和80%);对于对生物质成分分析的治疗方法,观察到类似的定量方面。与异养代谢相关的动力学系数未指示对治疗效率的负面影响,导致渗滤液增加,值为2.8; 2.8和2.7d -1分别与CAS单元的每个相获得,2.0; 1.5和1.6 D -1与IAS单元,表示与文献中的那些相似的值(1.5 A 5.0 D -1)。结果加强了渗滤液载荷引入的结论不会引起抑制或显着改变异养代谢,因此依赖于除去有机物质。
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