本文關(guān)鍵詞：曝氣生物濾池的改造以及多級生物處理系統(tǒng)-Fenton流化床組合工藝處理煉油污水的研究　出處：《北京化工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 曝氣生物濾池 多級生物處理 Fenton流化床 煉油污水

【摘要】：我國是一個水資源污染嚴重的國家,煉油污水作為難處理的工業(yè)污水,其是否達標(biāo)排放深刻地影響著地表水環(huán)境。對于煉化企業(yè),目前主要通過對原有污水處理設(shè)施的改造或新建使用新工藝的污水處理廠來達到合格排放要求。本課題的研究工作主要分為兩個部分：一是通過對某石化企業(yè)的曝氣生物濾池進行更換填料及投加高效微生物菌種,以實現(xiàn)提高出水水質(zhì)的目的；二是對某煉油廠的預(yù)處理污水的特征分析,使用多級生物處理系統(tǒng)-Fenton流化床組合工藝進行處理,為該廠的提標(biāo)改造工程提供依據(jù)。通過試驗,得到如下結(jié)論：1、某石化企業(yè)的石化廢水的深度處理采用曝氣生物濾池。由于濾池原有火山巖自身的不足,以及長期運行造成的濾料的老化,導(dǎo)致出水水質(zhì)難以達標(biāo),因此采用高效多孔懸浮填料對BAF進行改造。改造后,BAF出水的COD平均去除率達到28.1%,比改造前提高了119%以上；出水的氨氮平均去除率為25.8%,比改造前多提高了2.6%以上。出水COD和氨氮基本上能夠達到《城鎮(zhèn)污水處理廠水污染物排放標(biāo)準》(DB11/890-2012)的A級排放標(biāo)準。2、采用多級生物處理-Fenton流化床組合工藝對某石化企業(yè)的煉油污水進行處理,重點考察了HRT對多級生物處理系統(tǒng)的影響以及pH值、H2O2/Fe2+摩爾比、H2O2/COD質(zhì)量比對Fenton流化床處理效果的影響。結(jié)果表明,多級生物處理系統(tǒng)的最佳HRT為43.2 h；Fenton流化床最佳工藝條件為：pH值為3.0～4.0、H2O2投量為1.0 g·L-1、FeS04·7H20投量為2.0 g·L-、反應(yīng)時間為30 min。該組合工藝在總HRT為45 h的條件下,在進水COD為435～1020 mg·L-1較大的范圍內(nèi)變動時,系統(tǒng)總出水COD始終在30 mg-L-1以下,平均去除率達到96.54%；在進水氨氮為9.36-31.2mg·L-1范圍內(nèi)變動時,系統(tǒng)總出水氨氮維持在0.05 mg·L-,平均去除率為99.72%。處理后出水水質(zhì)滿足《污水綜合排放標(biāo)準》(GB 8978-1996)的一級排放標(biāo)準。
[Abstract]:China is a country with serious pollution of water resources. Refinery sewage, as a refractory industrial sewage, has a profound impact on the surface water environment. At present, the qualified discharge requirements are mainly achieved through the renovation of the existing sewage treatment facilities or the construction of new sewage treatment plants using the new process. The research work of this subject is divided into two parts:. The first is to replace the fillers and add high efficient microbial strains to the aerated biofilter of a petrochemical enterprise. In order to achieve the purpose of improving the effluent quality; The second is to analyze the characteristics of pre-treated wastewater in a refinery and treat it with a multi-stage biological treatment system-Fenton fluidized bed combination process, which provides the basis for the upgrading project of the plant. The conclusions are as follows: 1. Biological aerated filter is used in the advanced treatment of petrochemical wastewater in a petrochemical enterprise. Because of the deficiency of the original volcanic rock in the filter and the aging of filter media caused by long-term operation. As a result, the effluent quality is difficult to reach the standard, so the BAF was modified with high efficiency porous suspension filler. The average COD removal rate of the effluent reached 28.1% after the revamping. More than 119% more than before the transformation; The average removal rate of ammonia nitrogen in effluent is 25.8%. The effluent COD and ammonia-nitrogen can basically meet the discharge standard of water pollutants in urban sewage treatment plant (DB11 / 890-2012). Level A emission standard. 2. The multistage biological treatment-Fenton fluidized bed process was used to treat the refinery wastewater from a petrochemical plant. The effect of HRT on the multistage biological treatment system and pH value were investigated. The effect of H _ 2O _ 2 / Fe _ 2 molar ratio and H _ 2O _ 2 / COD mass ratio on the treatment efficiency of Fenton fluidized bed shows that the optimum HRT of multistage biological treatment system is 43.2 h; The optimum technological condition of Fenton fluidized bed is that the dosage of H _ 2O _ 2 is 1.0 g 路L ~ (-1) 路L ~ (-1) and the dosage of H _ 2O _ 2 is 2.0 g 路L ~ (-). The reaction time was 30 mins. Under the condition that the total HRT was 45 h, the influent COD was 435 ~ 1020 mg 路L ~ (-1). The total effluent COD of the system was always below 30 mg-L-1, and the average removal rate was 96.54%. When the influent ammonia nitrogen ranged from 9.36 to 31.2mg 路L -1, the total effluent ammonia nitrogen was maintained at 0.05 mg 路L -. The average removal rate is 99.72.After treatment, the effluent quality meets the first class discharge standard of Integrated Wastewater discharge Standard (GB8978-1996).
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X742

【參考文獻】

相關(guān)期刊論文 前6條

1 陳勝兵,何少華,婁金生,謝水波;Fenton試劑的氧化作用機理及其應(yīng)用[J];環(huán)境科學(xué)與技術(shù);2004年03期

2 季凌,吳芳云,陳進富;活性炭吸附在煉油化工廢水回用中的應(yīng)用[J];工業(yè)水處理;2002年11期

3 楊瑞洪;劉亞凱;;三元微電解—Fenton氧化工藝回用處理石化廢水[J];工業(yè)水處理;2012年04期

4 張旋;王啟山;;高級氧化技術(shù)在廢水處理中的應(yīng)用[J];水處理技術(shù);2009年03期

5 談宗平;ORBAL氧化溝在煉油污水處理上的應(yīng)用[J];石油化工環(huán)境保護;2002年04期

6 徐紅;劉德佳;姜梅;林海波;;電化學(xué)氧化-超濾組合工藝在煉油廠水處理中的應(yīng)用[J];石油煉制與化工;2006年07期

相關(guān)碩士學(xué)位論文 前1條

1 魏繼苗;Fenton氧化法處理石化二級出水的試驗研究[D];長安大學(xué);2013年

，

本文編號：1414824