SRB还原SO42-影响因素的广义灰色关联分析
Generalized grey relational analysis on factors influencing reduction of SO42- by SRB
邓奇根 1姚萌萌 2李帅 2刘朝思 2张哲铖2
作者信息
- 1. 河南理工大学 安全科学与工程学院,河南 焦作 454003;河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地,河南 焦作 454003;煤炭安全生产河南省协同创新中心,河南 焦作 454003
- 2. 河南理工大学 安全科学与工程学院,河南 焦作 454003
- 折叠
摘要
为探究影响硫酸盐还原菌(sulfate-reducing bacteria,SRB)降解污泥还原SO42- 的主要因素,构建广义灰色关联度评价模型,并对变量的重要度进行排序.研究结果表明:在一定条件下,SO42- 还原率随温度及初始pH值的上升呈现先增长后降低的趋势,随氧化还原电位的上升呈现不断降低的趋势;温度,初始pH,氧化还原电位的综合关联度分别为 0.690,0.755,0.537,影响SO42- 还原率因素大小顺序为初始pH＞温度＞氧化还原电位.研究结果可为污泥处理过程中控制硫化氢的释放提供理论支持,并为避免或减少污泥产硫化氢导致的人员伤亡和财产损失提供思路.
Abstract
In order to investigate the main factors influencing the reduction of SO42- in sludge degraded by sulfate-reducing bacteria,a generalized grey relational evaluation model was constructed,and the importance of variables was ranked.The re-sults show that under certain conditions,the SO42- reduction rate increases first and then decreases with the rise of temperature and initial pH,and decreases with the rise of oxidation reduction potential.Meanwhile,the comprehensive correlation degrees of temperature,initial pH,and oxidation reduction potential are 0.690,0.755,and 0.537,respectively,and the magnitude of the factors influencing the SO42- reduction rate is in the order of initial pH＞temperature＞oxidation reduction potential.The results can provide theoretical support for controlling the release of hydrogen sulfide during sludge treatment,and can also provide ideas for avoiding or reducing human casualties and property damage caused by hydrogen sulfide production from sludge.
关键词
降解/污泥/SO42-还原率/硫化氢Key words
degradation/sludge/SO42- reduction rate/hydrogen sulfide引用本文复制引用
基金项目
国家自然科学基金项目(51774116)
河南省高等学校青年骨干教师培养计划项目(2019GGJS052)
出版年
2024
NETL
NSTL
万方数据