Novel Self-driven Microbial Nutrient Recovery Cell with Simultaneous Wastewater Purification.
Novel Self-driven Microbial Nutrient Recovery Cell with Simultaneous Wastewater Purification.
复制标题
新型自驱动微生物营养物回收池同时净化废水
DOI：
10.1038/srep15744
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发表时间：
2015-10-27
影响因子：
4.6
通讯作者：
Huang X
中科院分区：
文献类型：
--
作者：
Chen X;Sun D;Zhang X;Liang P;Huang X
传统的废水净化技术消耗大量能源，而污水中丰富的化学能和营养物质资源在处理过程中被浪费。微生物营养回收池（MNRC）的开发利用废水中所含的能量，以同时净化废水和回收营养离子。当废水在 MNRC 的阳极室和阴极室之间循环时，有机物 (COD) 被细菌去除，而铵和磷酸盐（NH4+-N 和 PO43−-P）则被废水中原位能量产生的电场回收，无需额外的能量输入。在所有运行周期中，废水中COD 的去除率>82%，NH4+-N 的去除率>96%，PO43−-P 的去除率>64%。同时，与废水中的初始浓度相比，回收室中NH4+和PO43−的浓度分别增加到1.5倍和2.2倍以上。 MNRC 提供了概念验证，作为一种可持续、自驱动的方法，可在综合生物电化学系统中实现高效废水净化和营养物回收。
Conventional wastewater purification technologies consume large amounts of energy, while the abundant chemical energy and nutrient resources contained in sewage are wasted in such treatment processes. A microbial nutrient recovery cell (MNRC) has been developed to take advantage of the energy contained in wastewater, in order to simultaneously purify wastewater and recover nutrient ions. When wastewater was circulated between the anode and cathode chambers of the MNRC, the organics (COD) were removed by bacteria while ammonium and phosphate (NH4+-N and PO43−-P) were recovered by the electrical field that was produced usingin situenergy in the wastewater without additional energy input. The removal efficiencies from wastewater were >82% for COD, >96% for NH4+-N and >64% for PO43−-P in all the operational cycles. Simultaneously, the concentrations of NH4+and PO43−in the recovery chamber increased to more than 1.5 and 2.2 times, respectively, compared with the initial concentrations in wastewater. The MNRC provides proof-of-concept as a sustainable, self-driven approach to efficient wastewater purification and nutrient recovery in a comprehensive bioelectrochemical system.