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泡沫板覆盖对鸡粪沼液氨气排放的影响

发表时间:2016-12-31  浏览量:1621  下载量:321
全部作者: 薛文涛,林聪,孙钦平,邹国元,李吉进,刘本生
作者单位: 中国农业大学水利与土木工程学院;北京市农林科学院植物营养与资源研究所
摘 要: 利用泡沫板对鸡粪沼液储存过程进行不同覆盖面积的处理,连续监测沼液温度和pH值、电导率(electric conductivity,EC)、总氮(total nitrogen,TN)、化学需氧量(chemical oxygen demand,COD)、总固体(total solids,TS)、挥发性固体(volatile solid,VS)等理化指标,分析影响沼液氨挥发的因素和不同覆盖条件下沼液的氨气减排效果。试验结果表明,采用泡沫板覆盖能明显降低沼液的氨气挥发量,而且随着覆盖面积的增大,减排效果越明显,其中覆盖三分之一面积和覆盖一半面积处理组的氨气平均减排率分别为28.72%、53.87%. 沼液储存液面未覆盖、覆盖三分之一面积、覆盖一半面积处理组在15 d的储存期内累计氨气挥发量分别为3 140.56,2 203.64,1 425.63 mg. 不同覆盖面积处理对沼液储存中的pH值变化影响不明显。沼液储存过程中EC、TN、COD均有较为明显的下降,而且随着覆盖面积的增大,下降幅度变小。
关 键 词: 生物能;鸡粪沼液;覆盖;氨气挥发;氨气减排
Title: Effects of covering by cystosepiment on ammonia emission from chicken manure biogas slurry during storage
Author: XUE Wentao, LIN Cong, SUN Qinping, ZOU Guoyuan, LI Jijin, LIU Bensheng
Organization: College of Water Resources & Civil Engineering, China Agriculture University; Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences
Abstract: Ammonia emission characteristics of different covering treatment on chicken manure biogas slurry are studied with cystosepiment in this paper. We continuously measured temperature, pH, electric conductivity (EC), total nitrogen (TN), chemical oxygen demand (COD), total solids (TS), volatile solid (VS) during the storage and analyzed the influence factor of biogas slurry ammonia emission and reduction of different covering treatment. The results showed that covering treatment on biogas slurry could significantly reduce the amount of ammonia emission, and reduction efficiency was rising with the increasing of covering area. When compared with uncovered treatment group, a third of area covered and half of area covered treatment groups reduced emission amounts by 28.72% and 53.87%. The accumulative ammonia emission amounts of uncovered, a third of area covered, half of area covered treatment groups for 15 d were 3 140.56, 2 203.64, 1 425.63 mg, respectively. There were no different influences on pH value of different covering treatment. At the end of the experiment, the concentration of EC, TN, COD had an significantly reduction, but the falling range was decreasing with the increasing of covering area.
Key words: bioenergy; chicken manure biogas slurry; covering; ammonia emission; ammonia reduction
发表期数: 2016年12月第24期
引用格式: 薛文涛,林聪,孙钦平,等. 泡沫板覆盖对鸡粪沼液氨气排放的影响[J]. 中国科技论文在线精品论文,2016,9(24):2538-2543.
 
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