Institute of Chemical Engineering, Biotechnology and Environmental Technology, Faculty of Engineering, University of Southern Denmark, Niels Bohrs Allé, 1, 5230 Odense, Denmark.
J Environ Manage. 2013 Jan 30;115:147-54. doi: 10.1016/j.jenvman.2012.11.019. Epub 2012 Dec 14.
This study aimed at evaluating the effect of swine slurry acidification and acidification-aeration treatments on ammonia (NH(3)), carbon dioxide (CO(2)) and hydrogen sulfide (H(2)S) emissions during slurry treatment and subsequent undisturbed storage. The study was conducted in an experimental setup consisting of nine dynamic flux chambers. Three pH levels (pH = 6.0, pH = 5.8 and pH = 5.5), combined with short-term aeration and venting (with an inert gas) treatments were studied. Acidification reduced average NH(3) emissions from swine slurry stored after acidification treatment compared to emissions during storage of non-acidified slurry. The reduction were 50%, 62% and 77% when pH was reduce to 6.0, 5.8 and 5.5, respectively. However, it had no significant effect on average CO(2) and H(2)S emissions during storage of slurry after acidification. Aeration of the slurry for 30 min had no effect on average NH(3), CO(2) and H(2)S emissions both during the process and from stored slurry after venting treatments. During aeration treatment, the NH(3), CO(2) and H(2)S release pattern observed was related to the liquid turbulence caused by the gas bubbles rather than to biological oxidation processes in this study.
本研究旨在评估猪粪浆酸化和酸化-曝气处理对猪粪浆处理过程中以及随后未扰动储存期间氨（NH3）、二氧化碳（CO2）和硫化氢（H2S）排放的影响。该研究在一个由九个动态通量室组成的实验装置中进行。研究了三个 pH 值（pH = 6.0、pH = 5.8 和 pH = 5.5），结合短期曝气和通风（惰性气体）处理。与酸化处理后储存的非酸化猪粪浆相比，酸化降低了猪粪浆储存过程中的平均 NH3排放量。当 pH 值降低到 6.0、5.8 和 5.5 时，分别减少了 50%、62%和 77%。然而，它对酸化后猪粪浆储存过程中的平均 CO2和 H2S 排放没有显著影响。对猪粪浆曝气 30 分钟对通气处理后储存的猪粪浆的平均 NH3、CO2和 H2S 排放均无影响。在曝气处理期间，观察到的 NH3、CO2和 H2S 释放模式与本研究中的生物氧化过程有关，而是与气泡引起的液体湍流有关。
