School of Food Engineering, Harbin University of Commerce, Harbin, 150028, China.
School of Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China.
Biodegradation. 2022 Oct;33(5):509-528. doi: 10.1007/s10532-022-09995-w. Epub 2022 Aug 10.
Traditional Chinese medicine (TCM) wastewater is characterized by high organic content, unstable water quality and quantity and low biodegradability. In this paper, the hydrolytic acidification reactor-aerobic moving bed biofilm (MBBR) process was used to degrade TCM wastewater. Besides, a small pilot study was conducted. The appropriate operating parameters: hydraulic retention time (HRT) of the hydrolytic reactor was 16 h, HRT of MBBR was 30 h, dissolved oxygen of MBBR was 6 mg/L, sludge return ratio of MBBR was 100%. The hydrolytic reactor was started for 25 days. MBBR was run in series with the hydrolytic reactor after 24 days of separate operation. The start-up of the composite reactor was completed after another 26 days. The average removal efficiencies of chemical oxygen demand and ammonia nitrogen were 92% and 70%. The hydrolytic reactor was effective in decomposing macromolecules and MBBR had a strong ability to degrade pollutants through the excitation-emission-matrix spectra. The evolution pattern of the dominant bacterial genera and the surface morphology of sludge were studied by scanning electron microscopy and high-throughput sequencing analysis. It could be seen that the surface morphology of the biological filler was suitable for the growth and reproduction of microorganisms.
中药废水具有有机物含量高、水质水量不稳定、可生化性低等特点。本文采用水解酸化-好氧移动床生物膜（MBBR）工艺处理中药废水，并进行了小试研究。确定适宜的运行参数为：水解池水力停留时间（HRT）为 16 h，MBBR 池 HRT 为 30 h，MBBR 溶解氧为 6 mg/L，MBBR 污泥回流比为 100%。水解池启动 25 天后，与单独运行 24 天后的水解池串联运行 MBBR，经过 26 天完成复合式反应器的启动。COD 和氨氮的平均去除率分别为 92%和 70%。水解池对大分子物质的分解效果明显，MBBR 通过激发发射矩阵光谱对污染物的降解能力较强。通过扫描电子显微镜和高通量测序分析，研究了优势菌属的演替规律和污泥的表面形态。可以看出生物填料表面形态有利于微生物的生长繁殖。
