State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China.
University of Chinese Academy of Sciences, 100049, Beijing, China.
Nat Commun. 2024 Oct 22;15(1):9111. doi: 10.1038/s41467-024-53341-y.
The sustainable development strategy shifts water treatment from pollution removal to resource recovery. Here, an electrochemical resource-recovery anaerobic membrane bioreactor (eRAnMBR) that employed a magnesium plate and conductive membrane as dual anodes is presented and shows excellent performance in carbon, nitrogen, and phosphorus recovery, as well as 95% membrane anti-fouling. The Mg released alters the physicochemical properties of sludge, unblocking the cake layer, and recovers ammonium and phosphate, yielding 60.64% purity and 0.08 g d struvite deposited onto cathode to be separated from sludge. The enhanced direct interspecies electron transfer, along with hydrogen evolution and alkalinity increase due to the electrochemical reactions, significantly increase methane yield and purity (93.97%) of the eRAnMBR. This increased internal energy can cover the additional electricity and electrode consumption. This integrated eRAnMBR reactor boasts the benefits of short process, low maintenance, and low carbon footprint, introducing a concept for the next generation of wastewater treatment.
可持续发展战略将水处理从污染去除转向资源回收。在这里，提出了一种采用镁板和导电膜作为双阳极的电化学资源回收厌氧膜生物反应器（eRAnMBR），在碳、氮和磷回收以及 95%的膜抗污染方面表现出优异的性能。释放的 Mg 改变了污泥的物理化学性质，疏通了滤饼层，并回收了铵和磷酸盐，得到了纯度为 60.64%、在阴极上沉积了 0.08 g d 鸟粪石的产物，与污泥分离。由于电化学反应，增强的直接种间电子转移以及氢气的产生和碱度的增加，显著提高了 eRAnMBR 的甲烷产率和纯度（93.97%）。这种增加的内部能量可以覆盖额外的电力和电极消耗。这种集成的 eRAnMBR 反应器具有工艺短、维护成本低和低碳足迹的优点，为下一代废水处理引入了一个概念。
