Leachate of the uncontrolled landfill contains pollutants, which is discharged directly into the environment. The main objective of this study is to evaluate the reduction of bacteriological and parasitological risks by four biological treatments: sequencing batch reactor, anaerobic, intensive aeration and combination of the three processes. The results showed high bacteriological pollution in the raw leachate: 1.12 × 10⁷ CFU/ml, 6.7 × 10⁶ and 5.26 × 10⁴ for total coliforms, faecal coliforms and Streptococci, respectively, parasites of intestinal helminths are also present: 11.86, 9.49, 9.83, 8.81 eggs/L for Enterobius vermicularis, Ascaris lumbricoides, Trichuris and Hymenolepis nana, and the values are higher than the standards for discharge into the natural environment. After sequencing batch reactor treatment, a decrease is noted in bacteria, Staphylococci, total coliforms and Streptococci with 99.63%, 97.11%, 99.93% and 94.62% abatement, respectively. This process also removes 75% of total unviable form and 80% of viable form of parasites. Intensive aeration and anaerobic treatments allowed the total elimination of total coliforms. Anaerobic processing allowed a reduction of 33.4% of unviable forms and 37% of viable forms of parasites, while a reduction of 63% of unviable and 77% of viable parasites was reported by intensive aeration. The combined treatment improves the results with abatement rates to 100% for total coliforms bacteria, and viable forms of the genus parasites: Capillaria sp., Toxocara (nematodes), Hymenolepis nana and Taenia (cestodes). A principal component analysis showed very significant correlations between all measured variables (bacteria and parasites). Combined treatment appears to be the best treatment to reduce biological risks of leachate.

中文翻译：

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使用细菌学和寄生虫学监测评估渗滤液生物处理的有效性

不受控制的垃圾填埋场渗滤液中含有污染物，这些污染物直接排放到环境中。这项研究的主要目的是评估通过四种生物处理方法降低细菌学和寄生虫学风险的方法：分批反应器测序，厌氧，强化曝气和这三种方法的组合。结果表明，原始渗滤液中的细菌污染较高：总大肠菌群，粪便大肠菌群和链球菌分别为1.12×10 ⁷  CFU / ml，6.7×10 ⁶和5.26×10 ⁴，还存在肠道蠕虫的寄生虫：11.86、9.49 ，9.83、8.81个鸡蛋/升（对于普通肠球菌，A虫，Trichuris和Hymenolepis nana），并且该值高于排放到自然环境中的标准。在对分批反应器进行测序后，细菌，葡萄球菌，总大肠菌群和链球菌减少了分别减少了99.63％，97.11％，99.93％和94.62％。该过程还去除了75％的总不活形式和80％的活形式的寄生虫。密集曝气和厌氧处理可以彻底消除大肠菌群。厌氧处理可以减少33.4％的不活菌和37％的活菌，而据报道，通过密集曝气可以减少63％的不活菌和77％的活菌。将合并的处理改善属寄生虫与消减率的结果为100％总大肠菌群细菌，和可行的形式：毛细。SP，弓蛔虫（线虫），微小膜壳绦虫和绦虫（ces）。主成分分析表明，所有测量变量（细菌和寄生虫）之间都具有非常显着的相关性。联合处理似乎是降低渗滤液生物学风险的最佳方法。