This study was conducted to investigate the impact of intermittent feeding on performance, clogging, and gaseous emission on macrophyte assisted vermifiltration (MAVF) based treatment system. Synthetic slaughterhouse wastewater was applied to two different integrated vertical flow based MAVFs. Triplicates were used throughout the study. Eisenia fetida earthworms were added to MAVFs, and Carex muskingmenis plants were planted. Wastewater was applied to the reactors on 1) intermittent (8 h/day) (IMAVF) and 2) continuous (24 h/day) (CMAVF) basis. The average chemical oxygen demand, total nitrogen, and total phosphorous removals achieved by the IMAVF were 80.2 ± 1.6%, 53.9 ± 1.3% and 66.5 ± 1% respectively, and 68.3 ± 1.3%, 61.2 ± 1.4%, and 60.5 ± 1.4% by the CMAVF, respectively. The diffusion of air to the bedding of IMAVFs during no-flow conditions facilitated higher organics oxidation, adsorption of phosphorous, nitrification, and ammonification. At the end of the study, hydraulic conductivity of IMAVF and CMAVF were found to be 0.036 cm/s and 0.037 cm/s, respectively. CO₂, CH₄ and N₂O emissions from IMAVF were 245.5 ± 38.0 mg C/m², 5.0 ± 4.6 mg C/m² and 2513.5 ± 2629.9 μg N/m² respectively, while CO₂, CH₄ and N₂O emissions from CMAVF were 123.3 ± 14.5 mg C/m², 74.8±45.2 mg C/m² and 328.4 ± 93.4 μg N/m², respectively. Intermittent application of influent could be considered for improving the performance and lifespan of MAVFs, causing lower environmental footprints.

本研究旨在调查间歇投料对大型植物辅助蚯蚓过滤 (MAVF) 处理系统的性能、堵塞和气体排放的影响。将合成屠宰场废水应用于两种不同的基于垂直流的集成式 MAVF。在整个研究中使用一式三份。将Eisenia fetida蚯蚓添加到 MVF 中，以及Carex muskingmenis种植了植物。废水以 1）间歇（8 小时/天）（IMAVF）和 2）连续（24 小时/天）（CMAVF）的方式应用于反应器。IMAVF 实现的平均化学需氧量、总氮和总磷去除量分别为 80.2 ± 1.6%、53.9 ± 1.3% 和 66.5 ± 1%，以及 68.3 ± 1.3%、61.2 ± 1.4% 和 60.5 ± 1.4%分别由 CMAVF。在无流动条件下，空气向 IMAVF 床层的扩散促进了更高的有机物氧化、磷的吸附、硝化和氨化。在研究结束时，发现 IMAVF 和 CMAVF 的水力传导率分别为 0.036 cm/s 和 0.037 cm/s。IMAVF 的CO ₂、CH ₄和 N ₂ O 排放量为 245.5 ± 38.0 mg C/m ², 5.0 ± 4.6 mg C/m ²和 2513.5 ± 2629.9 μg N/m ² , 而 CMAVF 的 CO ₂ , CH ₄和 N ₂ O 排放量分别为 123.3 ± 14.5 mg C/m ² , 74.8±45.2 mg C/m ²和 328.4 ± 93.4 μg N/m ²分别。可以考虑间歇应用进水来提高 MAVF 的性能和使用寿命，从而降低环境足迹。