Concurrent treatment of raw and aerated swine wastewater using an electrotrophic denitrification system
Concurrent treatment of raw and aerated swine wastewater using an electrotrophic denitrification system
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DOI：
10.1016/j.biortech.2020.124508
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发表时间：
2021-02-01
影响因子：
11.4
通讯作者：
Goryanin, Igor
中科院分区：
文献类型：
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作者：
Prokhorova, Anna;Kainuma, Mami;Goryanin, Igor
研究了在高硝酸盐和低有机碳条件下，曝气养猪废水阴极室对硝酸盐的强化去除效果，重点研究了反硝化途径中细菌群落与氮素的关系。阴离子交换膜在-0.6V对AgCl2/AgCl2参比电极的阴极作用下，对L的去除速率为99+/-2 mg·d(-1)。此外，在阳极室中同时去除未经处理的全浓度废水中的有机物，去除效率为0.46gCOD L~(-1)d(-1)，从初始浓度为5g左右的COD L~(-1)经过7d的测定，去除效率为61.4+/-0.5%。在-0.6V的电位下，Bess的微生物多样性最高，其中包括自养反硝化菌Syderoxans、Gallionela和硫杆菌。
Enhanced nitrate removal in the cathode chamber of bioelectrochemical systems (BES) using aerated swine wastewater under high nitrate levels and low organic carbon was investigated in this study, focusing on the relationship between nitrogen and bacterial communities involved in denitrification pathways. BESs with the anion exchange membrane (AEM) under cathodic applied potentials of -0.6 V vs. AgCl/AgCl reference electrode showed a removal rate of 99 +/- 2 mg L-1 d(-1). Moreover, organic compounds from the untreated full-strength wastewater were simultaneously eliminated in the anode chamber with a removal rate of 0.46 g COD L-1 d(-1) with achieved efficiency of 61.4 +/- 0.5% from an initial concentration of around 5 g of COD L-1, measured over the course of 7 days. The highest microbial diversity was detected in BESs under potentials of -0.6 V, which include autotrophic denitrifiers such as Syderoxidans, Gallionela and Thiobacillus.