特异性流化生物膜（SMBBR）处理发酵类制药废水中试研究

发布时间：2018-05-03 23:37

  本文选题：反硝化菌 + 生物膜　； 参考：《内蒙古科技大学》2015年硕士论文

【摘要】：发酵类制药废水作为制药生产过程中的有机工业废水是公认的严重环境污染源。然而在发酵类制药废水的处理过程中，在工业设计、施工、运行管理上还存在诸多问题，导致我国治理效果较差，不能满足制药废水的排放新标准《发酵类制药工业水污染物排放标准》(GB21903-2008)的要求。 发酵类制药废水具有成分复杂，毒性大，色度深，固体悬浮物及含盐量高，易产生泡沫，可生化性差等特点。针对这些特点，采用特异性流化生物膜反应器(SMBBR)对发酵类制药废水进行中试研究。探讨SMBBR对高浓度、高氨氮、高COD、有机难降解废水的处理效果。 在SMBBR的试验装置中选用特殊的SDC-03型生物载体作为填料，选用特定的高活性反硝化菌DNF-409作为菌种。采用连续进水，填料的填充比为30%，投加高活性反硝化菌DNF-409，早晚各一次，每次20g，温度为22~26℃、DO为2~4mg/L、污泥质量浓度为2000mg/L、水力停留时间为16h的条件下，对发酵类制药废水进行研究，，挂膜周期为30d左右。 SMBBR反应器中生物膜的生长大致经历3个阶段：适应期，增长期及稳定期。SMBBR对发酵类制药废水的挂膜过程中NH3-N和COD的去除率并不是同步提高的，生物膜在生长过程中，好养异养菌的增殖速度较快，硝化菌的增殖速度较慢。COD，NH3-N，TN，TP的平均去除率分别为72.45%，27.72%，18.54%，84.58%，废水的可生化性得到提高。 在挂膜成功后，对比CASS与SMBBR两种工艺处理发酵类制药废水的效果，结果表明，处理相同水质的发酵类制药废水，SMBBR对TP、SS和色度去除率较高，相比CASS工艺具有明显优势，对NH3-N和COD去除效果并无明显优势。 SMBBR对水质水量适应性强，能耗较低，且剩余污泥少，污泥处置费用低，无需设置回流。综合考虑，SMBBR工艺的处理效果不但略高于CASS工艺，运行维护费用更低、控制更加灵活、运行管理更为简单。在北方地区，相同运行参数下处理发酵类制药废水SMBBR工艺效果优于CASS工艺。
[Abstract]:Fermentative pharmaceutical wastewater is recognized as a serious environmental pollution source as organic industrial wastewater in pharmaceutical production. However, in the treatment of fermentative pharmaceutical wastewater, there are still many problems in industrial design, construction and operation management, which lead to poor treatment effect in China. It can not meet the requirements of the new standard of discharge of pharmaceutical wastewater & the discharge Standard of Water pollutants in fermentation Pharmaceutical Industry (GB21903-2008). Fermentative pharmaceutical wastewater is characterized by complex composition, high toxicity, deep chroma, high solid suspensions and high salt content, easy to produce foam and poor biodegradability. According to these characteristics, a pilot scale study on fermentative pharmaceutical wastewater was carried out by using a specific fluidized biofilm reactor (SMBBRR). The treatment effect of SMBBR on high concentration, high ammonia nitrogen, high COD and organic refractory wastewater was discussed. A special SDC-03 carrier and a specific highly active denitrifying bacteria DNF-409 were selected as fillers in the SMBBR plant. The fermentation pharmaceutical wastewater was studied under the conditions of continuous influent, filling ratio of filler 30, adding high activity denitrifying bacteria DNF-409, once in the morning and evening, 20 g each time, 22 鈩

本文编号：1840625