Faculty of Agricultural Sciences, Federal University of Grande Dourados, Dourados, Brazil.
Federal Technological University of Paraná (UTFPR), Dois Vizinhos, Brazil.
Environ Technol. 2024 Aug;45(19):3765-3777. doi: 10.1080/09593330.2023.2230350. Epub 2023 Jul 4.
Employing forced aeration (FA) in composting static windrows (SW) from fish waste (FW) has the potential to enhance the development of process and, organic fertiliser quality. However, due to the impact of season, the FA may lead to excessive drying of SW and, difficulty in thermophilic temperature maintenance. The aim of this study was to assess the effects of passive aeration (PA) and FA on the composting of FW in SW during the summer and winter seasons. The temperatures of the windrows remained within the thermophilic range for most of the composting period, with peak temperatures observed shortly after starting and turning the windrows (at 50 and 70 days). The aeration benefited the initial TS degradations, resulting in 86.66 and 45.99% of the TS total reduced to FA and PA piles, at 50 days during the winter. The C organic reduction was 77.77 and 76.33% in summer and winter to FA piles, respectively, but this reduction was 59.24% and 67.82% for winter and summer, respectively, in PA windrows. At 50 days, the N reduction in FA piles was already at 70.32% and 71.87% for winter and summer. The volatile solids reductions were significantly higher ( < 0.01) in FA piles during the summer. Although the FA has been shown to enhance the organic constituents' degradation during the composting of FW, its adoption was not enough to improve the compost composition. Thus, by conducting piles on a small scale, with the perforated wall, as described in this study, the FA could be dispensed.
采用强制通风（FA）对鱼废物（FW）静态条垛（SW）进行堆肥处理，有可能提高处理过程和有机肥料质量的发展。然而，由于季节的影响，FA 可能导致 SW 过度干燥，并且难以维持高温。本研究旨在评估被动通风（PA）和 FA 对夏季和冬季 FW 在 SW 中的堆肥效果。堆肥期间，大部分时间堆体温度都处于高温范围内，在启动和翻堆后不久（在 50 天和 70 天）达到峰值。通风有利于 TS 的初始降解，在冬季 50 天时，FA 和 PA 堆的 TS 总量分别减少了 86.66%和 45.99%。在夏季和冬季，C 有机减少分别为 FA 堆的 77.77%和 76.33%，但在 PA 风堆中，冬季和夏季分别减少了 59.24%和 67.82%。在 50 天时，FA 堆中的 N 减少量已经达到了 70.32%和 71.87%，分别适用于冬季和夏季。在夏季，FA 堆中的挥发性固体减少量显著更高（ < 0.01）。虽然 FA 已被证明可以促进 FW 堆肥过程中有机成分的降解，但采用 FA 不足以改善堆肥成分。因此，通过在小规模、带有穿孔墙的情况下进行堆肥，如本研究中所述，可以不采用 FA。
