利福霉素类抗生素废水的水解酸化处理技术研究

Study on the Hydrolysis and Acidification Treatment Technology of Rifamycin Antibiotic Wastewater

利福霉素类抗生素废水含有多种污染物,有机物浓度高,pH值变化大,生物毒性强。水解酸化处理技术可以营造缺氧环境,促进水解酸化反应。试验采用水解酸化处理技术对利福霉素类抗生素废水进行厌氧酸化处理,分别考察水力停留时间和温度对水解酸化系统处理效果的影响,然后研究水解酸化系统的稳定性。试验结果表明,水力停留时间为40 h时,水解酸化效果较好,系统pH值能够保持稳定,面对酸性物质或碱性物质的冲击,系统仍能保持动态平衡。水解酸化系统运行稳定,出水平均酸度为38.2%,化学需氧量(Chemical Oxygen Demand,COD)的平均去除率超过21.5%,总氮的平均去除率为15.3%,有机氮的平均转化率为45.4%。作为利福霉素类抗生素废水的有效处理手段,水解酸化系统可以提高废水的可生化性,减少冲击负荷,为后续生化处理创造良好条件,实现废水的有效处理。

The rifamycin antibiotic wastewater contains various pollutants,with high organic matter concentration,large pH changes,and strong biological toxicity.Hydrolysis and acidification treatment technology can create an anaerobic environment and promote hydrolysis and acidification reactions.In the experiment,hydrolysis and acidification treatment technology is used to anaerobically acidify rifamycin antibiotic wastewater,and the effects of hydraulic retention time and temperature on the treatment efficiency of the hydrolysis and acidification system are investigated,and then the stability of the hydrolysis and acidification system is studied.The experimental results show that when the hydraulic retention time is 40 h,the hydrolysis and acidification effect is good,the system pH can be maintained stable,and the system can still maintain dynamic equilibrium in the face of the impact of acidic or alkaline substances.The hydrolysis and acidification system operates stably,with an average acidity of 38.2%in the effluent,an average removal rate of over 21.5%for Chemical Oxygen Demand(COD),an average removal rate of 15.3%for total nitrogen,and an average conversion rate of 45.4%for organic nitrogen.As an effective treatment method for rifamycin antibiotic wastewater,hydrolysis and acidification system can improve the biodegradability of wastewater,reduce impact load,create favorable conditions for subsequent biochemical treatment,and achieve effective treatment of wastewater.