{"title":"Efficiency and Microbial Community Characteristics of a micro Oxygen Baffled Aeactor for Treating Nitrophenol Wastewater","authors":"","doi":"10.30955/gnj.06322","DOIUrl":null,"url":null,"abstract":"<p class=\"15\" style=\"text-indent:0.0000pt\"><span style=\"font-size:9.0000pt\"><span style=\"font-family:'Times New Roman'\"><span style=\"color:#000000\"><span style=\"font-weight:normal\">Using </span></span></span></span><span style=\"font-size:9.0000pt\"><span style=\"font-family:宋体\"><span style=\"color:#000000\"><span style=\"font-weight:normal\"><font face=\"Times New Roman\">a </font></span></span></span></span><span style=\"font-size:9.0000pt\"><span style=\"font-family:'Times New Roman'\"><span style=\"color:#000000\"><span style=\"font-weight:normal\">baffle reactor to degrade nitrophenol wastewater</span></span></span></span><span style=\"font-size:9.0000pt\"><span style=\"font-family:'Times New Roman'\"><span style=\"color:#000000\"><span style=\"font-weight:normal\">,</span></span></span></span> <span style=\"font-size:9.0000pt\"><span style=\"font-family:宋体\"><span style=\"color:#000000\"><font face=\"Times New Roman\">w</font></span></span></span><span style=\"font-size:9.0000pt\"><span style=\"font-family:'Times New Roman'\"><span style=\"color:#000000\">ith p-nitrophenol as the target pollutant, investigate the effects of nitrophenol concentration, external carbon source concentration, hydraulic retention time, and dissolved oxygen changes on the degradation of p-nitrophenol in the micro oxygen baffle reactor. The results showed that when the HRT of the micro oxygen baffle reactor was maintained for 24 hours and the PNP concentration was below 100 mg/L, the COD removal rate remained stable at 93.68%. After the HRT was reduced, the contribution rate of the subsequent compartment to the degradation of p-nitrophenol and COD removal increased, becoming a beneficial supplement for the system to cope with load shocks. When the DO concentration is between 0.3-0.5mg/L, the removal rate of COD is the highest, indicating that micro aeration is beneficial for removing pollutants. Through high-throughput sequencing analysis, it was found that the microbial community composition in each compartment of the reactor was high. The species abundance in the first compartment and the third compartment was increased. The microbial groups in the reactor mainly included Bacteroidetes, Firmicutes, Proteobacteria, Spirochaetes, and Actinobacteria.</span></span></span></p> \n","PeriodicalId":55087,"journal":{"name":"Global Nest Journal","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Global Nest Journal","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.30955/gnj.06322","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Using a baffle reactor to degrade nitrophenol wastewater,with p-nitrophenol as the target pollutant, investigate the effects of nitrophenol concentration, external carbon source concentration, hydraulic retention time, and dissolved oxygen changes on the degradation of p-nitrophenol in the micro oxygen baffle reactor. The results showed that when the HRT of the micro oxygen baffle reactor was maintained for 24 hours and the PNP concentration was below 100 mg/L, the COD removal rate remained stable at 93.68%. After the HRT was reduced, the contribution rate of the subsequent compartment to the degradation of p-nitrophenol and COD removal increased, becoming a beneficial supplement for the system to cope with load shocks. When the DO concentration is between 0.3-0.5mg/L, the removal rate of COD is the highest, indicating that micro aeration is beneficial for removing pollutants. Through high-throughput sequencing analysis, it was found that the microbial community composition in each compartment of the reactor was high. The species abundance in the first compartment and the third compartment was increased. The microbial groups in the reactor mainly included Bacteroidetes, Firmicutes, Proteobacteria, Spirochaetes, and Actinobacteria.
期刊介绍:
Global Network of Environmental Science and Technology Journal (Global NEST Journal) is a scientific source of information for professionals in a wide range of environmental disciplines. The Journal is published both in print and online.
Global NEST Journal constitutes an international effort of scientists, technologists, engineers and other interested groups involved in all scientific and technological aspects of the environment, as well, as in application techniques aiming at the development of sustainable solutions. Its main target is to support and assist the dissemination of information regarding the most contemporary methods for improving quality of life through the development and application of technologies and policies friendly to the environment