填料碳种类对蚯蚓生物工程床净化畜禽养殖污水的影响

蚯蚓对不同种类填料碳的分解转化特征各异,继而影响蚯蚓生物工程床净化养殖污水的效果。为明确填料碳种类对净化畜禽养殖污水的影响特征,以水稻秸秆和水稻秸秆生物炭为生物工程床碳源填料,采用间隙式布料方式,连续22 d监测进水和出水水质。结果表明：秸秆填料的生物工程床对畜禽养殖污水特征污染物平均削减量分别为硝态氮67.2%,氨氮81.4%,总氮79.5%,磷酸盐29.9%,总磷35.2%,COD 21.4%,EC值77.8%;秸秆填料的生物工程床中添加蚯蚓后改变了特征污染物削减量,提升平均削减量分别为氨氮11.1%、总氮10.4%、磷酸盐17.8%、总磷73.9%和COD 27.3%,降低平均削减量分别...

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Bibliographic Details
Published in农业工程学报 Vol. 32; no. 15; pp. 213 - 218
Main Author 赵海涛 李宗宇 颜志俊 张明月 李天鹏 郑盛阳
Format Journal Article
LanguageChinese
Published 扬州大学环境科学与工程学院,扬州,225127%水利部南京水利科学研究院,南京,210029 2016
Subjects
净化
污水
生物炭
畜禽养殖
秸秆
蚯蚓生物工程床
畜禽养殖
蚯蚓生物工程床
秸秆
wastewater
biochar
生物炭
purification
livestock
净化
straw
污水
earthworm bioengineering bed
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Summary:蚯蚓对不同种类填料碳的分解转化特征各异,继而影响蚯蚓生物工程床净化养殖污水的效果。为明确填料碳种类对净化畜禽养殖污水的影响特征,以水稻秸秆和水稻秸秆生物炭为生物工程床碳源填料,采用间隙式布料方式,连续22 d监测进水和出水水质。结果表明：秸秆填料的生物工程床对畜禽养殖污水特征污染物平均削减量分别为硝态氮67.2%,氨氮81.4%,总氮79.5%,磷酸盐29.9%,总磷35.2%,COD 21.4%,EC值77.8%;秸秆填料的生物工程床中添加蚯蚓后改变了特征污染物削减量,提升平均削减量分别为氨氮11.1%、总氮10.4%、磷酸盐17.8%、总磷73.9%和COD 27.3%,降低平均削减量分别为硝态氮10.3%和EC值3.4%;生物炭填料的生物工程床对畜禽养殖污水特征污染物平均削减量分别为硝态氮36.8%,氨氮86.2%,总氮53.4%,磷酸盐21.2%,总磷33.3%,COD 33.3%和EC值51.7%;生物碳填料的生物工程床添加蚯蚓后改变特征污染物削减量,削减量平均提升分别为硝态氮0.4%、氨氮1.4%、总氮10.6%、磷酸盐26.0%、总磷29.5%、COD 39.2%和EC值0.7%。秸秆填料和生物炭填料的生物工程床对出水p H值增加量平均为3.1%和7.7%,添加蚯蚓后出水p H值下降,平均下降率为0.1%和7.7%。总之,填料碳种类和蚯蚓活动显著影响生物工程床净化养殖污水的效果,秸秆填料有利于畜禽养殖污水硝态氮、总氮、磷酸盐、总磷和EC值削减;生物炭填料有利于畜禽养殖污水氨氮和COD削减,并显著增加出水p H值。生物工程床添加蚯蚓后明显提高畜禽养殖污水氨氮、总氮、磷酸盐、总磷和COD的削减,但不利于硝态氮削减。
Bibliography:11-2047/S
Earthworm is a soil residence animal, which can effectively enrich and remove nutrients in the environment, and its role in the field of ecological environment has gained more and more attention. Earthworm bioengineering bed can efficiently purify various sewages. In such bioengineering, the filter is an important part, and carbon material is the core material of the filler. In order to determine the impact of the carbon types on the earthworm bioengineering bed, in this study,rice straw and biochar were used as carbon source filler, and livestock wastewater was added to the bioengineering bed at different time interval. The inlet and outlet water quality parameters were continuously monitored for 22 d. Results showed that bioengineering bed of rice straw as filler could significantly reduce various pollutants in livestock wastewater. The pollutant reduction was 67.2% of nitrate nitrogen, 81.4% of ammonium nitrogen, 79.5% of total nitrogen, 29.9% of phosphate,35.2% of total phosphorus, 21.4% of COD（c
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.15.029