秋季果蔬类废弃物产VFAs效果及应用研究
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摘要
果蔬类废弃物含水率高、产生量大,采用厌氧消化的工艺对果蔬类废弃物进行处理,可以产生含有大量挥发性脂肪酸(VFAs)的溶液,用作污水或渗滤液处理厂脱氮除磷的外加碳源。研究在间歇反应的最佳条件下(pH值=6,温度=35°C),探究了秋季果蔬类废弃物厌氧水解产VFAs的效果,考察了VFAs浓度、VFAs组成、挥发性固体(VS)转化率等指标的变化。结果表明,秋季果蔬类废弃物的产酸总量较低,VFAs质量浓度在82 h时达到8 062.9 mg/L。用于人工配水反硝化处理效果良好,可以达到一级A排放标准。
Fruit and vegetable waste have a high water content and high yield. A large amount of volatile fatty acids(VFAs)would produce from fruit and vegetable waste using by an anaerobic digestion process, the VFAs could be used as an additional carbon source for nitrogen and phosphorus removal of wastewater or leachate treatment plants. The produced efficiency of VFAs from fruit and vegetable waste in autumn by using an anaerobic hydrolysis was investigated under the optimum conditions(p H, 6 and temperature, 35 ℃), and the VFAs concentration, VFAs composition and VS conversion rate were also investigated. The total VFAs produce quantity from fruit and vegetable waste in autumn was low, and the total concentration of VFAs reached 8 062.9 mg/L at the 82 th hour. VFAs was used as a carbon source for denitrification experiments of artificial wastewater, the effluent water qualities could meet with the discharge standards of level 1-A.
Fruit and vegetable waste have a high water content and high yield. A large amount of volatile fatty acids(VFAs)would produce from fruit and vegetable waste using by an anaerobic digestion process, the VFAs could be used as an additional carbon source for nitrogen and phosphorus removal of wastewater or leachate treatment plants. The produced efficiency of VFAs from fruit and vegetable waste in autumn by using an anaerobic hydrolysis was investigated under the optimum conditions(p H, 6 and temperature, 35 ℃), and the VFAs concentration, VFAs composition and VS conversion rate were also investigated. The total VFAs produce quantity from fruit and vegetable waste in autumn was low, and the total concentration of VFAs reached 8 062.9 mg/L at the 82 th hour. VFAs was used as a carbon source for denitrification experiments of artificial wastewater, the effluent water qualities could meet with the discharge standards of level 1-A.
引文
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[16]JIANG Jian-guo,ZHANG Yu-jing,LI Kai-min,et al.Volatile fatty acids production from food waste:effects of p H,temperature,and organic loading rate[J].Bioresource technology,2013(143):525-530.
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[18]赵丹,任南琪,王爱杰.p H、ORP制约的产酸相发酵类型及顶级群落[J].重庆环境科学,2003,25(2):33-38.
[19]李梦露,蒋建国,张昊巍.餐厨垃圾水解酸化液作碳源的脱氮效果研究[J].中国环境科学,2014,34(4):917-923.
[20]ELEFSINIOTIS P,WAREHAM D G.Utilization patterns of volatile fatty acids in the denitrification re action[J].Enzyme and microbial technology,2007,41(1):92-97.
[21]任晓鸣,陆烽,王蔚.利用气相色谱测定剩余污泥厌氧消化产生的混合VFA[J].环境科技,2009,23(S1):39-41.
[2]吕琛,袁海荣,王奎升,等.果蔬垃圾与餐厨垃圾混合厌氧消化产气性能[J].农业工程学报,2011,5(21):91-94.
[3]宋丽,朱保宁,庞云芝等.厌氧污泥接种量对蔬菜残渣酸化影响试验研究[J].可再生能源,2011,29(1):76-80.
[4]LIM S J,KIM E Y,AHN Y H,et al.Biological nutrient removal with volatile fatty acids from food wastes in sequencing batch reactor[J].Korean journal of chemical engineering,2008,25(1):129-133.
[5]王凯楠,王伟.城市生物质废物的两相厌氧消化工艺研究[D].北京:清华大学,2012.
[6]黄鼎曦,陆文静,王洪涛.农业蔬菜废弃物处理方法进展和探讨[J].环境污染治理与设备,2002,3(11):38-42.
[7]王权,宫常修,蒋建国,等.Na Cl对餐厨垃圾厌氧发酵产VFA浓度及组分的影响[J].中国环境科学,2014,34(12):3 127-3 132.
[8]王佳明,蒋建国,宫常修,等.超声波预处理对餐厨垃圾产VFAs的影响[J].中国环境科学,2014,34(5):1 207-1 211.
[9]董永亮.果蔬废弃物两相厌氧消化特征研究[J].能源环境保护,2011,25(4):19-23.
[10]史宏伟,邹德勋,左剑恶,等.梯度负荷下果蔬垃圾厌氧消化性能及微生物群落结构的研究[J].环境科学学报,2012,32(1):232-240.
[11]DUTTA S,DAS A K.Analytical perspective on waste management for environmental remediation[J].Trac trends in analytical chemistry,2010,29(7):636-644.
[12]国家环境保护总局.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002:216-219.
[13]国家环境保护局.水质铵的测定纳氏试剂比色法:GB/T7479-1987[S].北京:标准出版社,1987.
[14]国家环境保护局.水质化学需氧量的测定重铬酸盐法:GB/T 11914-1989[S].北京:标准出版社,1989.
[15]HORIUCHII J I,SHIMIZU T,TADA K,et al.Selective production of organic acids in anaerobic acid reactor by p H control[J].Bioresource technology,2002,82(3):209-213.
[16]JIANG Jian-guo,ZHANG Yu-jing,LI Kai-min,et al.Volatile fatty acids production from food waste:effects of p H,temperature,and organic loading rate[J].Bioresource technology,2013(143):525-530.
[17]任南琪.产酸发酵微生物生理生态学[M].北京:科学出版社,2005:51-62,83-87.
[18]赵丹,任南琪,王爱杰.p H、ORP制约的产酸相发酵类型及顶级群落[J].重庆环境科学,2003,25(2):33-38.
[19]李梦露,蒋建国,张昊巍.餐厨垃圾水解酸化液作碳源的脱氮效果研究[J].中国环境科学,2014,34(4):917-923.
[20]ELEFSINIOTIS P,WAREHAM D G.Utilization patterns of volatile fatty acids in the denitrification re action[J].Enzyme and microbial technology,2007,41(1):92-97.
[21]任晓鸣,陆烽,王蔚.利用气相色谱测定剩余污泥厌氧消化产生的混合VFA[J].环境科技,2009,23(S1):39-41.