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Performance of microporous carrier for removing nitrogen from aquaculture wastewater

文献类型： 外文期刊

作者： Zhou, Wen 1 ; Yuan, Julin 2 ; Ni, Tengfei 1 ; Yang, Yuanhao 3 ; Li, Mengying 1 ; Cheng, Zhongqin 1 ;

作者机构： 1.Soochow Univ, Sch Biol Basic Med Sci, Suzhou 215123, Peoples R China

2.Zhejiang Inst Freshwater Fisheries, Key Lab Hlthy Freshwater Aquaculture, Key Lab Freshwater Aquaculture genet & Breeding Z, Minist Agr & Rural Affairs, Huzhou 313001, Peoples R China

3.Chinese Acad Fishery Sci, Yellow River Fisheries Res Inst, Xian 710086, Peoples R China

关键词： Polyvinyl alcohol-gel carriers; Low-strength wastewater (LSW); Aeration strategies; Chemical oxygen demand; total nitrogen

期刊名称：DESALINATION AND WATER TREATMENT （ 影响因子：1.273； 五年影响因子：1.452 ）

ISSN： 1944-3994

年卷期： 2022 年 254 卷

页码：

收录情况： SCI

摘要： It is critical when dealing with the huge emissions of low-strength wastewater (LSW) to improve the total nitrogen (TN)-removal performance of the treatment strategy. In this study, a kind of microporous carrier (polyvinyl alcohol gel beads) was studied for its N-removal performance in treating low-strength wastewater (LSW) in a biofilm reactor. The results showed that the best N-removal performance within three reactors with different carriers was achieved under the condition of chemical oxygen demand/TN = 8 and aeration strategy S2. In these conditions, the effluent TN of the polyvinyl alcohol (PVA)-bead group was stably maintained below 2 mg/L, the microbial richness of the biofilm on PVA-gel beads was significantly greater than that of the control (suspended polypropylene plastic sphere); furthermore, the percentage of microorganisms related to N-removal on the PVA-gel carriers was 39.04%, approximately 9.5 times higher than the control (4.13%). Therefore, compared with the traditional polypropylene plastic sphere, microporous PVA-gel carriers performed better for the advanced treatment of LSW.

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