轻工学报2024，Vol.39Issue(1)：109-117,9.DOI:10.12187/2024.01.014
常低温条件下氨氮质量浓度对厌氧消化处理轻工行业废水的影响
Effect of ammonia nitrogen mass concentration on anaerobic digestion process for treating light industrial wastewater under normal and low temperature
摘要
Abstract
Anaerobic digestion process was established in the Up-flow Anaerobic Sludge Blanket(UASB).The study focused on the effect of ammonia nitrogen mass concentration on the performance of anaerobic digestion process for treating light industrial wastewater under normal and low-temperature conditions(<25℃).The results showed that intermitting sludge addition and controlling the reflux ratio of 7.5 were beneficial for the start-up of the anaerobic digestion process.Ammonia nitrogen mass concentration ranging from 400～1400 mg/L had no adverse effect on anaerobic digestion performance,while that in 400～800 mg/L slightly promoted anaerobic digestion per-formance.However,the higher ammonia nitrogen mass concentration led to the death of some microorganisms and an increase of the extracellular polymeric substance and soluble microbial products.In addition,the increase of ammonia nitrogen mass concentration was not conducive to the growth of hydrogenotrophic Methanobacterium.The relative abundance of Methanobacterium decreased from 75.5%to 6.3%.However,it was beneficial to the prolif-eration of acetotrophic Methanosaeta and facultative Methanosarcina and their relative abundances increased from 19.8%and 1.7%to 63.8%and 29.1%,respectively.Under normal and low temperature conditions,anaerobic digestion process could treat high COD light industrial wastewater with ammonia nitrogen mass concentration of 0～1400 mg/L,but the dominant methanogenic archaea would undergo significant revolution.关键词
厌氧消化工艺/氨氮/产甲烷古菌/轻工行业废水Key words
anaerobic digestion process/ammonia nitrogen/methanogenic archaea/light industrial wastewater分类
资源环境引用本文复制引用
张肖静,张涵,董永恩,龚瑶瑶,宋亚丽,张杰..常低温条件下氨氮质量浓度对厌氧消化处理轻工行业废水的影响[J].轻工学报,2024,39(1):109-117,9.基金项目
中原千人-中原青年拔尖人才支持计划项目(豫组通[2021]44号) （豫组通[2021]44号）
国家自然科学基金项目(22006139) （22006139）
河南省自然科学基金项目(232300420171) （232300420171）
