Decontamination of anaerobically digested slurry in a paddy field ecosystem in Jiaxing region of China
Decontamination of anaerobically digested slurry in a paddy field ecosystem in Jiaxing region of China
复制标题
中国嘉兴地区稻田生态系统厌氧消化污泥的净化
DOI：
10.1016/j.agee.2011.10.011
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Hirasawa, Tadashi
中科院分区：
文献类型：
--
作者：
Lu, Jun;Jiang, Lina;Chen, Dingjiang;Toyota, Koki;Strong, P. James;Wang, Hailong;Hirasawa, Tadashi
由于厌氧消化具有产生沼气（一种可再生能源）的优势，因此在中国农村管理生物废弃物方面越来越受欢迎。然而，一个新的挑战是最大限度地减少厌氧消化浆料（ADS）造成的环境污染。本研究的目的是评估的可行性，利用稻田修复ADS，同时种植水稻。田间试验采用6种不同氮负荷的处理，在水稻生长季节期间进行。这些处理根据ADS中的氮含量进行调整，负荷分别为270、405、540和1080 kgNha −1。将这些处理与阴性对照（不施肥）和阳性对照（化肥）进行比较，后者包括施用270 kgNha −1的尿素。这些氮源和泥浆修复的影响进行了监测，使用标准的方法来测量水质，土壤特性和水稻生产的变化。水稻籽粒产量普遍高于所有ADS处理比尿素氮处理。每次灌溉后7-8 d内，各处理的田间持水水质均达到国家排放标准。地下水水质和重金属含量在土壤和水稻籽粒不受ADS处理。我们认为，在867- 1734 m3 ha − 1中灌溉的ADS量不仅对粮食质量（稻米）和接收环境（水和土壤）是安全的，而且对土壤肥力和稻米产量也是有益的。
Anaerobic digestion has become increasing popular for managing biowastes in rural China as it has the advantage of generating biogas, a renewable energy. A new challenge, however, is minimizing the environmental pollution resulting from the anaerobically digested slurry (ADS). The aim of this study was to assess the feasibility of using a paddy field to remediate ADS while simultaneously cultivating rice. A field experiment was trialed using six treatments based on varying nitrogen loadings over the period of a rice-growing season. These treatments were adjusted to the content of the N within the ADS and had loadings of 270, 405, 540 and 1080kgNha−1. These treatments were compared to a negative control (no fertilizer) and a positive control (chemical fertilizer) that consisted of urea applied at 270kgNha−1. The effects of these N sources and slurry remediation were monitored using standard methods to measure water quality, soil properties and changes in rice production. Rice grain yields were generally higher for all ADS treatments than for the urea N treatment. Standing water quality in the field could reach national discharge standards for all treatments within 7–8 days after each ADS irrigation. Groundwater quality and heavy metal concentrations in both soil and the rice grain were not affected by the ADS treatments. We suggest that the quantities of ADS irrigated in 867–1734m3ha−1was not only safe for food quality (rice grain) and the receiving environment (water and soil), but also beneficial to soil fertility and rice grain yield.
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影响因子：
6.8
作者：
Marcato, Claire-Emmanuelle;Pinelli, Eric;Guiresse, Maritxu
通讯作者：
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影响因子：
3
作者：
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通讯作者：
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影响因子：
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作者：
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影响因子：
12.8
作者：
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通讯作者：
I. Takeda;A. Fukushima;R. Tanaka
DOI：
10.2166/wst.2008.518
发表时间：
2008-10
期刊：
Water science and technology : a journal of the International Association on Water Pollution Research
影响因子：
--
作者：
D. Cysneiros;C. Banks;S. Heaven
通讯作者：
D. Cysneiros;C. Banks;S. Heaven