畜禽养殖污水处理中微波催化氧化法的参数优化
Optimization of Parameters for Microwave Catalytic Oxidation in Livestock Farming Wastewater Treatment
张潇 1刘芳 2耿文广 3王鲁元 3员冬玲 3李子淳2
作者信息
- 1. 山东建筑大学热能工程学院,山东济南 250100;齐鲁工业大学(山东省科学院)能源研究所,山东济南 250014
- 2. 山东建筑大学热能工程学院,山东济南 250100
- 3. 齐鲁工业大学(山东省科学院)能源研究所,山东济南 250014
- 折叠
摘要
该研究拟对微波催化氧化处理畜禽养殖污水技术进行参数优化.以厌氧消化池内的污水为研究对象,分别研究了 pH、微波时间、微波功率、催化剂用量、过氧化氢用量5个因素对化学需氧量(COD)去除率的影响;采用响应曲面法中的Box-Behnken试验设计,以COD去除率为响应值,以微波时间、微波功率、活性炭用量为影响因素,建立数学模型.通过方差分析可知,影响因素显著性顺序为:微波功率＞活性炭用量＞微波时间,微波功率和微波时间的交互作用对COD去除率影响显著;模型预测的最佳条件组合为:微波时间14.83 min,微波功率320 W,活性炭用量14 g·L-1,COD去除率为89.79％,该反应条件下3组平行试验的COD平均去除率为90.27％,与预测值相对误差为0.54％.采用微波催化氧化技术处理畜禽污水,可以满足《畜禽养殖业污染物排放标准》(GB18596)中对COD＜100 mg·L-1的一级排放要求.
Abstract
The microwave catalytic oxidation technology was used to treat livestock farming wastewater,and the effects of five factors,namely pH,microwave time,microwave power,catalyst dos-age,and hydrogen peroxide dosage,on the COD removal rate were studied in anaerobic digesters.The Box-Behnken experimental design in response surface method was used,with COD removal rate as the re-sponse value,the microwave time,microwave power and activated carbon dosage as the influencing fac-tors,and the Box-Behnken experimental design was used to establish a mathematical model.The analysis of variance showed that the order of significance of the influencing factors was:microwave power＞activa-ted carbon dosage＞microwave time,and the interaction between microwave power and microwave time had a significant effect on the COD removal rate.The model predicted the optimal conditions,which were indicated as microwave time 14.83 min,microwave power 320 W,and activated carbon dosage 14 g·L-1.The removal rate of COD was 89.79％,the relative error between the model-predicted and the measured values was 0.54％.Microwave catalytic oxidation technology can be adopted for livestock wastewater to meet the first discharge standard of COD＜100 mg·L-1in Pollutant Emission Standards for Livestock and Poultry Farming(GB18596).
关键词
微波催化氧化/畜禽污水/化学需氧量/响应曲面法Key words
microwave catalytic oxidation/livestock wastewater/chemical oxygen demand/response surface methodology引用本文复制引用
基金项目
山东省自然科学基金资助项目(ZR2020ME191)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据