Effect of HRT and BDPs types on nitrogen removal and microbial community of solid carbon source SND process treating low carbon/nitrogen domestic wastewater
Effect of HRT and BDPs types on nitrogen removal and microbial community of solid carbon source SND process treating low carbon/nitrogen domestic wastewater
复制标题
HRT和BDPs类型对固体碳源SND工艺处理低碳/氮生活废水脱氮及微生物群落的影响
DOI：
10.1016/j.jwpe.2020.101854
复制
发表时间：
2020-12
影响因子：
7
通讯作者：
Zhao Tiantao
中科院分区：
文献类型：
--
作者：
Wu Heng;Zhang Qian;Chen Xue;Wang Liangbo;Luo W;ong;Zhang Zhengyi;Liu Hao;Zhao Tiantao
以生物可降解聚合物（BDPs）为生物膜载体和碳源，开发了一种新型的同时硝化反硝化（SND）工艺，以去除低碳污水中的氮。研究了BDPs类型和水力停留时间对氮去除率和微生物群落组成的影响。结果表明，HRT参数测试范围为40h ~ 3h，短HRT （13h ~ 3h）脱氮效果明显较差。在最佳HRT （13h）下，聚己内酯（PCL）反应器的NH4+-N和总氮（TN）去除率分别达到98.40%和89.14%，丁二酸聚丁烯（PBS）反应器的NH4+-N和TN去除率分别达到85.73%和81.64%。当HRT由13h降至3h时，PCL和PBS反应器的NH4+-N去除率分别降至最低的55.43%和33.47%，TN去除率分别降至55.53%和44.88%。根据Illumina MiSeq测序和相关分析，amethylo、Bdellovibrio和zoogloea3属与氮去除率和短HRT呈显著正相关，短HRT通过增加这些属的丰度影响TN去除率。LEfSe分析显示PCL和PBS反应器之间的差异取决于methylomultilis的差异，最终导致与脱氮相关的微生物群落的差异。KEGG分析显示，在13h HRT条件下，硝化相关功能基因（amoA、amoB、amoC和hao）的丰度最高，而反硝化相关功能基因（napA、napB、nasA、nirS和nosz）在PBS体系中的丰度普遍高于PCL体系。
A novel simultaneous nitrification and denitrification (SND) process using biodegradable polymers (BDPs) as the biofilm carrier and carbon source was developed to remove nitrogen from low-carbon sewage. The effects of BDPs types and hydraulic retention time (HRT) on nitrogen removal and microbial community composition were investigated. The results suggested that HRT parameters were tested in a range from 40h to 3h, and nitrogen removal performance was significantly worse with short HRT (13h to 3h). The NH4+-N and total nitrogen (TN) removal rates of the polycaprolactone (PCL) reactor reached to 98.40 % and 89.14 % at the optimal HRT (13h), respectively, and polybutylene succinate (PBS) reactor reached to 85.73 % and 81.64 %, respectively. When HRT was decreased from 13h to 3h, the NH4+-N removal rate of the PCL and PBS reactors were reduced to the lowest values of 55.43 % and 33.47 %, and the removal rate of TN also reduced to 55.53 % and 44.88 %. According to Illumina MiSeq sequencing and correlation analyses, the generaMethyloversatilis,Bdellovibrio,andZoogloeawere significantly, positively correlated with nitrogen removal rate and short HRT, and short HRT impacted TN removal through increasing the abundance of these genera. LEfSe analysis revealed that the differences observed between PCL and PBS reactors were dependent on differences inMethyloversatilis, ultimately resulting in differences in microbial communities related to nitrogen removal. KEGG analysis suggested that nitrification-related functional genes (amoA,amoB,amoC, andhao) had the greatest abundance in the 13h HRT condition, and denitrification-related functional genes (napA,napB,nasA,nirS, andnosZ) were generally more abundant in the PBS system than the PCL system.
登录
查看更多内容
通过 Illumina Miseq 测序揭示焦化废水处理膜生物反应器中微生物群落的厌氧驯化
影响因子：
6.9
作者：
Jiadi Zhu;Lujun Chen;Yan Zhang;Xiaobiao Zhu
通讯作者：
Xiaobiao Zhu
以可生物降解聚合物PCL为载体和碳源的反硝化性能及生物膜特性
影响因子：
8.8
作者：
Chu, Libing;Wang, Jianlong
通讯作者：
Wang, Jianlong
使用聚乙烯作为支撑材料的实验室规模移动床生物膜反应器（MBBR）处理对苯二甲酸污染废水的性能评估
影响因子：
8.8
作者：
Liu Jiawei;Zhou Jie;Xu Ning;He Aiyong;Xin Fengxue;Ma Jiangfeng;Fang Yan;Zhang Wenming;Liu Shixun;Jiang Min;Dong Weiliang
通讯作者：
Dong Weiliang
影响因子：
11.4
作者：
Shiyang Zhang;Changbo Zhu;S. Xia;Meng Li
通讯作者：
Shiyang Zhang;Changbo Zhu;S. Xia;Meng Li
影响因子：
5.8
作者：
Weizhong Wu;Lu-Hua Yang;Jianlong Wang
通讯作者：
Weizhong Wu;Lu-Hua Yang;Jianlong Wang