耕作型稻田消纳村庄生活污水及其土壤脲酶活性研究

doi:10.14088/j.cnki.issn0439-8114.2021.10.007

湖北农业科学 ›› 2021, Vol. 60 ›› Issue (10): 33-37.doi: 10.14088/j.cnki.issn0439-8114.2021.10.007

耕作型稻田消纳村庄生活污水及其土壤脲酶活性研究

陈杰, 陈婕, 王逸超, 彭明国, 桂松, 张文艺

常州大学环境与安全工程学院, 江苏常州 213164

收稿日期:2020-06-11 出版日期:2021-05-25 发布日期:2021-05-28
通讯作者: 张文艺,男,教授,博士,主要从事水污染控制与生态修复研究,（电话）13915046002（电子信箱）zhangwenyi888@sina.com。
作者简介:陈杰（1995-）,男,江苏宿迁人,在读硕士研究生,研究方向为水污染控制与生态修复,（电话）17751769030（电子信箱）978393062@qq.com。
基金资助:
水体污染控制与治理科技重大专项（2017ZX07202-003/004）

Study on the treatment of village sewage and urease activity of soil in cultivated paddy field

CHEN Jie, CHEN Jie, WANG Yi-chao, PENG Ming-guo, GUI Song, ZHANG Wen-yi

School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164,Jiangsu,China

Received:2020-06-11 Online:2021-05-25 Published:2021-05-28

摘要/Abstract

摘要： 为研究耕作型稻田湿地消纳村庄污水效能及稻田土壤脲酶活性特征,揭示污水中氮、磷等营养元素随着水稻生长的变化规律和氮的转化特性,以水稻田为载体,构建低负荷水平潜流稻田湿地,分析稻田湿地土壤脲酶活性与水稻生长、污水处理效能关系。结果表明,当水稻处于分蘖期后时,COD、TP、NH₃-N和TN平均去除率最高且分别为47.2%、84.0%、78.9%和68.6%,出水水质指标均能达到《地表水环境质量标准GB 3838—2002》中的Ⅴ类。对耕作型稻田湿地脲酶活性变化及其与氮转化关系分析表明,在整个水稻生长周期内（7—11月）,土壤脲酶活性在水稻分蘖期达到最高,随后慢慢下降,同时由于湿地土壤微生物丰富,土壤层脲酶含量在水稻生长期内均高于填料层脲酶含量。污水进入湿地后,氨氮的大量消耗带动脲酶的刺激增长,同时土壤脲酶活性与总氮呈显著相关性。

关键词: 稻田湿地, 水质处理, 村庄污水, 稻田土壤酶

Abstract: In order to study the efficiency of cultivated paddy field wetland in absorbing village sewage and the urease activity of paddy soil, and to reveal the changing law of nitrogen, phosphorus and other nutrient elements in sewage with the growth of rice and the transformation characteristics of nitrogen, a low load level subsurface flow paddy field wetland was constructed with paddy field as the carrier, and the relationship between the urease activity of paddy field wetland soil and the growth of rice and the effect of sewage treatment was analyzed. The results showed that when the rice was in tillering stage, the average removal rates of COD, TP, NH₃-N and TN were the highest and 47.2%, 84.0%, 78.9% and 68.6%, respectively, and the effluent quality indexes could reach the class V of environmental quality standard for surface water （GB 3838—2002）. The changes of urease activity and the relationship between urease activity and nitrogen transformation in cultivated paddy field wetland showed that during the whole rice growth cycle （July to November）, the content of urease activity in soil reached the highest level in rice tillering stage, and then decreased slowly. At the same time, due to the rich microorganism in wetland soil, the content of urease in soil layer was higher than that in filling layer in rice growth stage. After the sewage enters into the wetland, the consumption of ammonia nitrogen drove the stimulation growth of urease, and the urease activity in the soil was significantly related to the total nitrogen.

Key words: paddy wetland, water treatment, rural domestic sewage, paddy soil enzyme

中图分类号:

S151.9

陈杰, 陈婕, 王逸超, 彭明国, 桂松, 张文艺. 耕作型稻田消纳村庄生活污水及其土壤脲酶活性研究[J]. 湖北农业科学, 2021, 60(10): 33-37.

CHEN Jie, CHEN Jie, WANG Yi-chao, PENG Ming-guo, GUI Song, ZHANG Wen-yi. Study on the treatment of village sewage and urease activity of soil in cultivated paddy field[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(10): 33-37.

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耕作型稻田消纳村庄生活污水及其土壤脲酶活性研究

Study on the treatment of village sewage and urease activity of soil in cultivated paddy field

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