添加富钾采矿废物可以通过增加高温期嗜热菌的丰度来缩短堆肥周期。
Potassium-rich mining waste addition can shorten the composting period by increasing the abundance of thermophilic bacteria during high-temperature periods.
机构信息
Inner Mongolia Research Academy of Eco-Environmental Sciences, Hohhot, 010000, Inner Mongolia, China.
School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, Inner Mongolia, China.
出版信息
Sci Rep. 2023 Apr 13;13(1):6027. doi: 10.1038/s41598-023-31689-3.
Conventional compost sludge has a long fermentation period and is not nutrient rich. Potassium-rich mining waste was used as an additive for aerobic composting of activated sludge to make a new sludge product. The effects of different feeding ratios of potassium-rich mining waste and activated sludge on the physicochemical properties and thermophilic bacterial community structure during aerobic composting were investigated. The results showed that potassium-rich waste minerals contribute to the increase in mineral element contents; although the addition of potassium-rich waste minerals affected the peak temperature and duration of composting, the more sufficient oxygen content promoted the growth of thermophilic bacteria and thus shortened the overall composting period. Considering the requirements of composting temperature, it is recommended that the addition of potassium-rich waste minerals is less than or equal to 20%.
传统的堆肥污泥发酵周期长，营养不丰富。本研究以富钾矿山废物作为添加剂，用于活性污泥的好氧堆肥，以制得一种新型的污泥产品。考察了不同比例的富钾矿山废物与活性污泥添加对好氧堆肥过程中理化性质和嗜热细菌群落结构的影响。结果表明，富钾废矿可提高矿物元素含量；虽然添加富钾废矿会影响堆肥的最高温度和持续时间，但充足的氧气含量更有利于嗜热细菌的生长，从而缩短了整个堆肥周期。考虑到堆肥温度的要求，建议富钾废矿的添加量应小于或等于 20%。
Zotero 插件