College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China.
College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China; Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology, Hangzhou 310023, China.
Ecotoxicol Environ Saf. 2021 Oct 1;222:112532. doi: 10.1016/j.ecoenv.2021.112532. Epub 2021 Jul 17.
The effects of hydraulic condition of reactor and the dominant degrading bacteria on the removal of di-n-butyl phthalate (DBP) from aged landfill leachate by anaerobic/anoxic/oxic (A/A/O) leachate treatment process were investigated. The optimal DBP removal (96.0%) was obtained from aged leachate when the hydraulic retention time (HRT) of the reactor was 3 d, internal reflux ratio of the reactor was 200%, and external reflux ratio of the reactor was 60%, respectively. The removal efficiency of DBP was significantly improved after the inoculation of the dominant DBP-degrading bacteria (Pseudomonas sp. W1) in the reactor. The mean removal efficiencies of DBP before and after inoculation were 94.1% and 97.7%, respectively. Furthermore, the inoculation of dominant DBP-degrading bacteria changed the original sludge structure and characteristics, which was more conducive to the removal of DBP. These results provide theoretical basis for the effective removal of DBP from aged leachate by the biological treatment process.
研究了反应器水力条件和优势降解菌对厌氧/缺氧/好氧（A/A/O）渗滤液处理工艺去除老龄垃圾渗滤液中二丁基邻苯二甲酸酯（DBP）的影响。当反应器的水力停留时间（HRT）为 3d、反应器内回流比为 200%、反应器外回流比为 60%时，从老龄渗滤液中获得了最佳的 DBP 去除效果（96.0%）。将优势 DBP 降解菌（假单胞菌 W1）接种到反应器中后，DBP 的去除效率显著提高。接种前后 DBP 的平均去除效率分别为 94.1%和 97.7%。此外，接种优势 DBP 降解菌改变了原始污泥的结构和特性，更有利于 DBP 的去除。这些结果为生物处理工艺有效去除老龄渗滤液中的 DBP 提供了理论依据。
