水生植物与猪粪混合厌氧消化的实验研究与工艺设计
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摘要
利用水生植物治理湖泊富营养化问题已经得到广泛重视,但是水生植物大量生长以后的处理,成为新的问题。本研究利用厌氧消化方法,以水生植物为底物产生沼气,为了提高水生植物的厌氧消化性能,我们将猪粪掺混到水生植物中,分别在两种反应器中进行混合厌氧消化实验。
本文首先利用升流式厌氧污泥床反应器(UASB)对COD浓度为4000mg/L左右的水葫芦与猪粪废水的混合物厌氧消化,底物的C/N为18.8,在为期30天的实验中,累计产气量为12371mL,平均每日产气量为412.4mL,沼气中平均甲烷含量达到65.1%,混合物的甲烷产率为345ml/g。
在进行了小试试验后,使用带隔板的推流式反应器(体积约为4.0m~3),对浮萍与猪粪(干重比1:1)的混合物、猪粪进行为期50天的中温厌氧消化产气性能比较研究,结果表明:在有机负荷为3.5g(VS)/L/d时,浮萍与猪粪(干重比1:1)混合物的VS产气率为0.31 L/g,COD转化率为63.2%,反应器体积产气率为1.00 m~3/m~3/d;猪粪的VS产气率为0.28 L/g,COD转化率为57.1%,反应器体积产气率为0.71 m~3/m~3/d。进料COD和SS的平均浓度分别为19.19 g/L和14.28g/L,推流式反应器对其平均去除率分别为59.7%和68.7%。由此说明,带隔板的推流式厌氧反应器对浮萍和猪粪的混合物有较好的厌氧消化能力,浮萍与猪粪混合物的厌氧消化性能优于猪粪。
通过以上的混合消化实验,证明了添加猪粪之后,水生植物厌氧消化特性的提高,为今后的推广提供有意的参考。
By using aquatic plant to management the problem of lake eutrophication have been extensively seriously, but how to use the massive growth of aquatic plants, has become the new problems. This study uses anaerobic digestion methods, and use the aquatic plants as the substrate to produce biogas. In order to improve the anaerobic digestion performance of the aquatic plants, we mixed pig manure to aquatic plants, and use two types reactors to carry on the anaerobic digestion experiment respectively.
This paper firstly use the UASB reactor to digest swine manure mixtured with water hyacinth,and the COD concentrations is about 4000mg/L, during 30 days, the accumulative total gas production is 12371mL,and daily biogas production is 412.4mL , the methane content is 65.1% and the biogas yield is 345ml/g.
Then,A comparative study of anaerobic digestion of swine manure mixtured with duckweed(1:1) and swine manure was carried out in a pilot scale plug-flow reactor,the SS concentrations of the substrate is 12.8g/L～15.9g/L,the results show that the mean removal efficiencies for COD and SS were 59.7% and 68.7%.and the pH is 6.7～7.9,solved with pig manure as the substrate anaerobic digestion problems that high pH. The biogas yield,the conversion rate and the volumetric biogas production of swine manure mixtured with duckweed(1:1) were 0.31 L/g,63.2% and 1.00 m~3/m~3/d,respectively.
Through the above mixed digested experiments that proved that after the added of the swine manure to aquatic plants,the anaerobic digestion characteristics have promotion rised, and provide intentional reference to future use.
本文首先利用升流式厌氧污泥床反应器(UASB)对COD浓度为4000mg/L左右的水葫芦与猪粪废水的混合物厌氧消化,底物的C/N为18.8,在为期30天的实验中,累计产气量为12371mL,平均每日产气量为412.4mL,沼气中平均甲烷含量达到65.1%,混合物的甲烷产率为345ml/g。
在进行了小试试验后,使用带隔板的推流式反应器(体积约为4.0m~3),对浮萍与猪粪(干重比1:1)的混合物、猪粪进行为期50天的中温厌氧消化产气性能比较研究,结果表明:在有机负荷为3.5g(VS)/L/d时,浮萍与猪粪(干重比1:1)混合物的VS产气率为0.31 L/g,COD转化率为63.2%,反应器体积产气率为1.00 m~3/m~3/d;猪粪的VS产气率为0.28 L/g,COD转化率为57.1%,反应器体积产气率为0.71 m~3/m~3/d。进料COD和SS的平均浓度分别为19.19 g/L和14.28g/L,推流式反应器对其平均去除率分别为59.7%和68.7%。由此说明,带隔板的推流式厌氧反应器对浮萍和猪粪的混合物有较好的厌氧消化能力,浮萍与猪粪混合物的厌氧消化性能优于猪粪。
通过以上的混合消化实验,证明了添加猪粪之后,水生植物厌氧消化特性的提高,为今后的推广提供有意的参考。
By using aquatic plant to management the problem of lake eutrophication have been extensively seriously, but how to use the massive growth of aquatic plants, has become the new problems. This study uses anaerobic digestion methods, and use the aquatic plants as the substrate to produce biogas. In order to improve the anaerobic digestion performance of the aquatic plants, we mixed pig manure to aquatic plants, and use two types reactors to carry on the anaerobic digestion experiment respectively.
This paper firstly use the UASB reactor to digest swine manure mixtured with water hyacinth,and the COD concentrations is about 4000mg/L, during 30 days, the accumulative total gas production is 12371mL,and daily biogas production is 412.4mL , the methane content is 65.1% and the biogas yield is 345ml/g.
Then,A comparative study of anaerobic digestion of swine manure mixtured with duckweed(1:1) and swine manure was carried out in a pilot scale plug-flow reactor,the SS concentrations of the substrate is 12.8g/L～15.9g/L,the results show that the mean removal efficiencies for COD and SS were 59.7% and 68.7%.and the pH is 6.7～7.9,solved with pig manure as the substrate anaerobic digestion problems that high pH. The biogas yield,the conversion rate and the volumetric biogas production of swine manure mixtured with duckweed(1:1) were 0.31 L/g,63.2% and 1.00 m~3/m~3/d,respectively.
Through the above mixed digested experiments that proved that after the added of the swine manure to aquatic plants,the anaerobic digestion characteristics have promotion rised, and provide intentional reference to future use.
引文
安徽省能源集团,中国科学技术大学,合肥供水集团.水生植物治理巢湖富营养化技术方案研究和工程示范项目研究报告.2008,合肥
陈彬,赵由才,曹伟华,等.2007.水葫芦厌氧发酵工程化应用研究.环境污染与防治.29(6):455～458
陈广银,郑正,邹星星,等.2008.添加猪粪对凤眼莲中温厌氧消化过程的影响.2008.28(10):898～903
陈敏娇,浙江大学,2007畜禽养殖污水植物净化与资源化利用研究(硕士论文)
杜静,常志州,王世梅,等.2008.不同底物沼气干式发酵启动阶段的产酸特征研究.江苏农业科学:225～227
何家骏,严少华,叶小梅,等.2008.水葫芦厌氧发酵产沼气技术研究进展.24(3):359～362
贺延龄.1998.废水厌氧生物处理.北京.中国轻工业出版社
胡晓镭.2009.湖、库富营养化机理研究综述.水资源保护.25(4):44～47
胡细全,刘大银,蔡鹤生。ABR反应器结构对水力特性的影响,中国地质大学学报,2004
黄映红,张婧萱,廖保宁,等.2008.超声波提取水葫芦总黄酮的工艺研究.25(1):50～52
兰吉武,陈彬,曹伟华,等.2004.水葫芦厌氧发酵产气规律[J].黑龙江科技学院学报.14(1):18～21
刘海琴,宋伟,高运强,等.2008.水葫芦与蓝藻厌氧发酵产沼气研究[J].江苏农业科学.3:254～256
刘聿太.1990.沼气发酵微生物及厌氧技术.北京:科学出版社
刘圣根,黄卫东,许子牧等.水花生、水葫芦厌氧消化产沼气的中试实验研究.环境工程学报(已录用),2010
鲁秀国,张攀,李明怡。水解酸化一UASB工艺处理规模化养猪场污水工程设计。湖北农业科学,2009,第48卷,第11期
蒋展鹏.环境工程学.北京:高等教育出版社,2005,254
金相灿.湖泊富营养化控制与管理技术.北京:化学工业出版社,2001,116～118
申立贤,高浓度有机废水厌氧处理技术。北京,中国环境出版社,1992
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邱晔平,杨晓瑞,朱建良,等.2008.降解水葫芦中纤维素的优良菌株的筛选.纤维素科学与技术.16(2):53～58
王凯军,UASB工艺的理论与工程实践,北京,中国环境科学出版社,2000
王媛媛,张衍林.2009.以猪粪为发酵底物厌氧发酵产氢工艺的优化[J].农业工程学报,25(9):237～242
魏世清,覃文能,李金怀,等.2008.水葫芦与猪粪混合厌氧发酵产沼气研究.广西林业科学.37(2):80～83
叶小梅,周立祥,严少华,等.2009.水葫芦厌氧发酵特性研究.江苏农业学报.25(4):787～790
张无敌,宋洪川,李建昌,等.2001.鸡粪厌氧消化过程中水解酶与沼气产量的关系研究.能源工程,4:16～18
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陈广银,郑正,邹星星,等.2008.添加猪粪对凤眼莲中温厌氧消化过程的影响.2008.28(10):898～903
陈敏娇,浙江大学,2007畜禽养殖污水植物净化与资源化利用研究(硕士论文)
杜静,常志州,王世梅,等.2008.不同底物沼气干式发酵启动阶段的产酸特征研究.江苏农业科学:225～227
何家骏,严少华,叶小梅,等.2008.水葫芦厌氧发酵产沼气技术研究进展.24(3):359～362
贺延龄.1998.废水厌氧生物处理.北京.中国轻工业出版社
胡晓镭.2009.湖、库富营养化机理研究综述.水资源保护.25(4):44～47
胡细全,刘大银,蔡鹤生。ABR反应器结构对水力特性的影响,中国地质大学学报,2004
黄映红,张婧萱,廖保宁,等.2008.超声波提取水葫芦总黄酮的工艺研究.25(1):50～52
兰吉武,陈彬,曹伟华,等.2004.水葫芦厌氧发酵产气规律[J].黑龙江科技学院学报.14(1):18～21
刘海琴,宋伟,高运强,等.2008.水葫芦与蓝藻厌氧发酵产沼气研究[J].江苏农业科学.3:254～256
刘聿太.1990.沼气发酵微生物及厌氧技术.北京:科学出版社
刘圣根,黄卫东,许子牧等.水花生、水葫芦厌氧消化产沼气的中试实验研究.环境工程学报(已录用),2010
鲁秀国,张攀,李明怡。水解酸化一UASB工艺处理规模化养猪场污水工程设计。湖北农业科学,2009,第48卷,第11期
蒋展鹏.环境工程学.北京:高等教育出版社,2005,254
金相灿.湖泊富营养化控制与管理技术.北京:化学工业出版社,2001,116～118
申立贤,高浓度有机废水厌氧处理技术。北京,中国环境出版社,1992
屠清英.巢湖富营养化研究,合肥:中国科技大学出版社,1990
邱晔平,杨晓瑞,朱建良,等.2008.降解水葫芦中纤维素的优良菌株的筛选.纤维素科学与技术.16(2):53～58
王凯军,UASB工艺的理论与工程实践,北京,中国环境科学出版社,2000
王媛媛,张衍林.2009.以猪粪为发酵底物厌氧发酵产氢工艺的优化[J].农业工程学报,25(9):237～242
魏世清,覃文能,李金怀,等.2008.水葫芦与猪粪混合厌氧发酵产沼气研究.广西林业科学.37(2):80～83
叶小梅,周立祥,严少华,等.2009.水葫芦厌氧发酵特性研究.江苏农业学报.25(4):787～790
张无敌,宋洪川,李建昌,等.2001.鸡粪厌氧消化过程中水解酶与沼气产量的关系研究.能源工程,4:16～18
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