[1]王玥,秦帆,唐燕华,等.农业废弃物作为反硝化脱氮外加碳源的研究[J].林业工程学报,2019,4(05):146-151.[doi:10.13360/j.issn.2096-1359.2019.05.021]
 WANG Yue,QIN Fan,TANG Yanhua,et al.Agricultural wastes as additional carbon sources for denitrification[J].Journal of Forestry Engineering,2019,4(05):146-151.[doi:10.13360/j.issn.2096-1359.2019.05.021]
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农业废弃物作为反硝化脱氮外加碳源的研究()
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《林业工程学报》[ISSN:1001-8081/CN:32-1160/S]

卷:
4
期数:
2019年05期
页码:
146-151
栏目:
森林工程与土建
出版日期:
2019-09-16

文章信息/Info

Title:
Agricultural wastes as additional carbon sources for denitrification
文章编号:
2096-1359(2019)05-0146-06
作者:
王玥秦帆唐燕华陈治黄亚楠荆肇乾*
南京林业大学土木工程学院,南京 210037
Author(s):
WANG Yue QIN Fan TANG Yanhua CHEN Zhi HUANG Yanan JING Zhaoqian*
College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
关键词:
反硝化 脱氮 固体碳源 农业废弃物 玉米芯
Keywords:
denitrification nitrogen removal solid carbon source agricultural waste corncob
分类号:
X703
DOI:
10.13360/j.issn.2096-1359.2019.05.021
文献标志码:
A
摘要:
近年来,基于安全性和经济性等方面的考虑,以农业废弃物作为反硝化脱氮外加碳源的研究已成为热点。本研究旨在优选出适合作为反硝化外加碳源的农业废弃物,在降低生物脱氮成本的同时可以实现农业废弃物的资源化利用。以稻壳、稻秆、玉米芯、玉米秆、花生壳、麦秆6种农业废弃物作为反硝化外加碳源,从释碳性能、释氮性能、浸出液可生化性、脱氮效果、表面性状及生物附着性能等方面对碳源材料进行优选。静态释碳、释氮结果表明,稻秆、玉米秆和麦秆这3种秸秆类材料浸出液的碳氮比总体偏低,不适宜作为良好的反硝化外加碳源。持续反硝化实验显示,稻壳的脱氮效果差,难以被微生物有效利用; 玉米芯浸出液的可生化性好,13 d内硝酸盐氮去除率稳定在94%以上; 花生壳的长期反硝化效果不如玉米芯,10 d后硝酸盐氮去除率不足50%。从SEM分析可知,反应前各碳源材料表面粗糙程度依次为:玉米芯>稻壳>花生壳,经反硝化实验后玉米芯被微生物利用程度也最高。6种农业废弃物中玉米芯的可生化性与长期脱氮效果最好,适合作为替代传统外加碳源的备选材料。
Abstract:
In recent years, research on agricultural wastes as additional carbon sources for the denitrification process has become a hot topic because of the consideration of safety and economy.This paper aims at exploring the optimal agricultural wastes which are suitable to be carbon sources for denitrification in order to reduce the cost of biological nitrogen removal and realize resource utilization of agricultural wastes.Six kinds of agricultural wastes including rice husk, rice rod, corncob, corn stalk, peanut shell and straw were used as carbon sources in denitrification process in this paper.These carbon sources were selected by the comparisons of the carbon release, nitrogen release, biodegradability, denitrification performance, surface properties and bio-attachment capability.The experimental results of the static carbon release and nitrogen release showed that the C/N values in the leaching solution of three straw materials(i.e., rice straw, corn stalk and wheat straw)were low, which were not suitable to be used as favorable carbon sources in the denitrification process.The running of denitrification experiments showed that the rice husk had relatively poor nitrogen removal performance and could hardly be effectively used by microbes.The biodegradability of corncob was fairly good and the nitrate removal rate was above 94% over 13 days.The long-term denitrification efficiency using peanut shell as a carbon source was worse than corncob, and its nitrate removal rate was below 50% after 10 days.According to the SEM analysis, the surface roughness of each carbon source was in the order of corncob > rice husk > peanut shell before the reaction.The biodegradation degree of corncob was the highest after the denitrification experiment.Due to its excellent biodegradability and long-term nitrogen removal performance,the corncob was proven to be the most suitable substitute for the traditional carbon sources of all six agricultural wastes.

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备注/Memo

备注/Memo:
收稿日期:2018-11-10 修回日期:2019-06-07
基金项目:国家科技支撑计划(2015BAL02B04); 住房和城乡建设部科学技术计划项目(2015-K7-012); 南京林业大学大学生创新创业训练计划项目(2017NFUSPITP181)。
作者简介:王玥,女,研究方向为水处理技术与水污染控制。通信作者:荆肇乾,男,教授。E-mail:zqjing@njfu.edu.cn
更新日期/Last Update: 2019-09-10