一体化完全搅拌槽式反应器厌氧消化系统的启动运行试验研究
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摘要
为提高废水厌氧生物处理的处理效率和稳定性,开发了一套内置气-液-固三相分离器的一体化完全搅拌槽式反应器(CSTR),并以糖蜜废水为基质,考察了一体化CSTR厌氧消化系统的启动运行特性,以期为实际工程应用提供适宜的工程控制参数。以啤酒废水污水处理车间的剩余污泥为接种污泥,在污泥接种量为5.5g/L、温度为(35±1)℃、水力停留时间(HRT)为18h、pH保持在6.5~7.5的条件下,通过逐级提升进水COD质量浓度(2 000、4 000、7 000mg/L)的方式启动一体化CSTR厌氧消化系统。结果发现,一体化CSTR厌氧消化系统的适宜进水COD质量浓度为4 000 mg/L,此时COD去除率为54.6%,产气速率达到17.4L/d,发酵气中甲烷体积分数为42.9%。进水COD提高到7 000 mg/L时,COD去除率和甲烷体积分数分别仅为20.0%、25.0%,这可能归结于该系统此时的生物量持有能力较低。
In order to improve the efficiency and stability of anaerobic biological treatment,an integrated continuous stirred tank reactor(CSTR)with gas-liquid-solid 3-phase separator was developed.Trough treating sugar refinery wastewater,the operation performance of starting up integrated CSTR anaerobic digestion system was explored to provide appropriate engineering control parameters to the actual engineering applications.The integrated CSTR anaerobic digestion system was inoculated with excess sewage sludge of 5.5g/L from the brewery wastewater treatment plant.The integrated CSTR anaerobic digestion system run under hydraulic retention time(HRT)of 18 h,temperature of(35±1)℃ and pH within 6.5-7.5,with the influent COD from 2 000 mg/L to 4 000 mg/L,finally to 7 000mg/L.The results showed that the most optimum COD concentration for integrated CSTR anaerobic digestion system was 4 000mg/L,gaining the COD removal efficiency at 54.6% and the biogas production rate and methane volumn fraction at 17.4L/d and 42.9%,respectively.However,the COD removal efficiency and methane volumn fraction only arrived at 20.0% and 25.0%,respectively,when the influent COD reached 7 000mg/L,which might be attributed to the poor ability of holding biomass in this state.
In order to improve the efficiency and stability of anaerobic biological treatment,an integrated continuous stirred tank reactor(CSTR)with gas-liquid-solid 3-phase separator was developed.Trough treating sugar refinery wastewater,the operation performance of starting up integrated CSTR anaerobic digestion system was explored to provide appropriate engineering control parameters to the actual engineering applications.The integrated CSTR anaerobic digestion system was inoculated with excess sewage sludge of 5.5g/L from the brewery wastewater treatment plant.The integrated CSTR anaerobic digestion system run under hydraulic retention time(HRT)of 18 h,temperature of(35±1)℃ and pH within 6.5-7.5,with the influent COD from 2 000 mg/L to 4 000 mg/L,finally to 7 000mg/L.The results showed that the most optimum COD concentration for integrated CSTR anaerobic digestion system was 4 000mg/L,gaining the COD removal efficiency at 54.6% and the biogas production rate and methane volumn fraction at 17.4L/d and 42.9%,respectively.However,the COD removal efficiency and methane volumn fraction only arrived at 20.0% and 25.0%,respectively,when the influent COD reached 7 000mg/L,which might be attributed to the poor ability of holding biomass in this state.
引文
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[13]阴方芳,刘文如,王建芳,等.CSTR中亚硝化颗粒污泥的变化过程研究[J].环境科学,2014,35(11):4230-4236.
[14]郑飞,王灿.广西制糖工业糖蜜废水处理中的CDM机会[J].甘蔗糖业,2008(4):45-47,37.
[15]李建政,苏晓煜,昌盛,等.pH对发酵系统的产甲烷活性抑制及产氢强化[J].哈尔滨工业大学学报,2012,44(4):63-66.
[16]昌盛.厌氧接触式发酵制氢反应器的运行调控与产氢效能[D].哈尔滨:哈尔滨工业大学,2011.
[17]国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002.
[18]昌盛,李建政,付青,等.ACR在不同进水COD浓度下的产氢性能与菌群结构[J].化工学报,2015,66(3):1156-1162.
[19]李建政,李伟光,昌盛,等.厌氧接触发酵制氢反应器的启动和运行特性[J].科技导报,2009,27(14):90-93.
[20]任南琪,刘敏,王爱杰,等.两相厌氧系统中产甲烷相有机酸转化规律[J].环境科学,2003,24(4):89-93.
[2]吴烈善,杨希,罗锴,等.糖蜜酒精废液的脱色实验研究[J].中国酿造,2009,22(7):117-120.
[3]吴振强,梁世中.糖蜜酒精蒸馏废液色素研究[J].环境污染与防治,2002,24(1):13-15,18.
[4]FISCHER K,BIPP H P,RIEMSCHNEIDER P,et al.Utilization of biomass residues for the remediation of metal-polluted soiles[J].Environmental Science&Technology,1998,32(14):2154-2161.
[5]刘文剑,刘扬林,刘淑云,等.糖蜜废水处理与资源化研究进展[J].中国资源综合利用,2009,27(7):39-41.
[6]FANG Cheng,BOE K,ANGELIDAKI I.Anaerobic co-digestion of desugared molasses with cow manure;focusing on sodium and potassium inhibition[J].Bioresouce Technology,2011,102(2):1005-1011.
[7]范艳霞,俸斌,杨霞,等.糖蜜酒精废水生物处理方法与研究进展[J].水处理技术,2012,38(11).
[8]张萍,李丽芳,解庆林.生物—化学法综合处理糖蜜酒精废水实验研究[J].桂林工学院学报,2005,25(2):237-241.
[9]刘琴,张敬东,李捍东,等.UASB处理高浓度糖蜜酒精废液的研究进展[J].酿酒科技,2005,26(11).
[10]郑磊.糖蜜酒精废水的治理工艺研究及优化[D].天津:天津大学,2011.
[11]DONG Fang,ZHAO Quanbao,ZHAO Jinbao,et al.Monitoring the restart-up of an upflow anaerobic sludge blanket(UASB)reactor for the treatment of a soybean processing wastewater[J].Bioresource Technology,2010,101(6):1722-1726.
[12]王建龙,张子健,吴伟伟.好氧颗粒污泥的研究进展[J].环境科学学报,2009,29(3):449-473.
[13]阴方芳,刘文如,王建芳,等.CSTR中亚硝化颗粒污泥的变化过程研究[J].环境科学,2014,35(11):4230-4236.
[14]郑飞,王灿.广西制糖工业糖蜜废水处理中的CDM机会[J].甘蔗糖业,2008(4):45-47,37.
[15]李建政,苏晓煜,昌盛,等.pH对发酵系统的产甲烷活性抑制及产氢强化[J].哈尔滨工业大学学报,2012,44(4):63-66.
[16]昌盛.厌氧接触式发酵制氢反应器的运行调控与产氢效能[D].哈尔滨:哈尔滨工业大学,2011.
[17]国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002.
[18]昌盛,李建政,付青,等.ACR在不同进水COD浓度下的产氢性能与菌群结构[J].化工学报,2015,66(3):1156-1162.
[19]李建政,李伟光,昌盛,等.厌氧接触发酵制氢反应器的启动和运行特性[J].科技导报,2009,27(14):90-93.
[20]任南琪,刘敏,王爱杰,等.两相厌氧系统中产甲烷相有机酸转化规律[J].环境科学,2003,24(4):89-93.