本文選題：反硝化菌 + 生物膜��； 參考：《內(nèi)蒙古科技大學(xué)》2015年碩士論文

【摘要】：發(fā)酵類制藥廢水作為制藥生產(chǎn)過程中的有機工業(yè)廢水是公認的嚴重環(huán)境污染源。然而在發(fā)酵類制藥廢水的處理過程中，在工業(yè)設(shè)計、施工、運行管理上還存在諸多問題，導(dǎo)致我國治理效果較差，不能滿足制藥廢水的排放新標準《發(fā)酵類制藥工業(yè)水污染物排放標準》(GB21903-2008)的要求。 發(fā)酵類制藥廢水具有成分復(fù)雜，毒性大，色度深，固體懸浮物及含鹽量高，易產(chǎn)生泡沫，可生化性差等特點。針對這些特點，采用特異性流化生物膜反應(yīng)器(SMBBR)對發(fā)酵類制藥廢水進行中試研究。探討SMBBR對高濃度、高氨氮、高COD、有機難降解廢水的處理效果。 在SMBBR的試驗裝置中選用特殊的SDC-03型生物載體作為填料，選用特定的高活性反硝化菌DNF-409作為菌種。采用連續(xù)進水，填料的填充比為30%，投加高活性反硝化菌DNF-409，早晚各一次，每次20g，溫度為22~26℃、DO為2~4mg/L、污泥質(zhì)量濃度為2000mg/L、水力停留時間為16h的條件下，對發(fā)酵類制藥廢水進行研究，，掛膜周期為30d左右。 SMBBR反應(yīng)器中生物膜的生長大致經(jīng)歷3個階段：適應(yīng)期，增長期及穩(wěn)定期。SMBBR對發(fā)酵類制藥廢水的掛膜過程中NH3-N和COD的去除率并不是同步提高的，生物膜在生長過程中，好養(yǎng)異養(yǎng)菌的增殖速度較快，硝化菌的增殖速度較慢。COD，NH3-N，TN，TP的平均去除率分別為72.45%，27.72%，18.54%，84.58%，廢水的可生化性得到提高。 在掛膜成功后，對比CASS與SMBBR兩種工藝處理發(fā)酵類制藥廢水的效果，結(jié)果表明，處理相同水質(zhì)的發(fā)酵類制藥廢水，SMBBR對TP、SS和色度去除率較高，相比CASS工藝具有明顯優(yōu)勢，對NH3-N和COD去除效果并無明顯優(yōu)勢。 SMBBR對水質(zhì)水量適應(yīng)性強，能耗較低，且剩余污泥少，污泥處置費用低，無需設(shè)置回流。綜合考慮，SMBBR工藝的處理效果不但略高于CASS工藝，運行維護費用更低、控制更加靈活、運行管理更為簡單。在北方地區(qū)，相同運行參數(shù)下處理發(fā)酵類制藥廢水SMBBR工藝效果優(yōu)于CASS工藝。
[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

本文編號：1840625