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| 黄鸢尾对牛场养殖废水肥用过程中的耐受性研究 |
| Research on yellow iris tolerance to cattle farm wastewater purification |
| 投稿时间：2018-09-06 |
| DOI：10.13254/j.jare.2018.0224 |
| 中文关键词: 黄鸢尾，牛场废水，水培，耐受性 |
| 英文关键词: yellow iris, dairy wastewater, water planting, tolerance |
| 基金项目:天津市现代农业产业技术体系项目（ITTPRS2017008/ITTCRS2017006）；天津市科技计划项目（16PTGCCX00030） |
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| 中文摘要: |
| 为更有效地利用水生植物黄鸢尾处理牛场养殖废水，初步探明黄鸢尾净化牛场养殖废水过程中的关键影响因素，以不同稀释比例牛场废水水培黄鸢尾为研究对象，通过探究黄鸢尾的生长速率与稀释浓度的关系，分析黄鸢尾生长速率与各个污染物指标去除率之间相关性，研究黄鸢尾在牛场废水不同稀释浓度下的耐受性。结果表明：黄鸢尾作为水质净化系统中常见的植物，能有效降低牛场废水中的氮磷，净化水质。当牛场废水浓度高于T3水平（15∶1稀释）时，表现出生长受抑制，一周之后，黄鸢尾对COD、NH4+-N、TN和TP的去除率可以达到57.1%、59.49%、82.59%和72.39%，其中对TN、TP去除效果最为显著。研究表明，当牛场废水稀释之后，控制稀释比例在T3水平时，黄鸢尾生长不会受到抑制，对牛场粪污废水中的污染物表现出较好的消纳和去除效果。 |
| 英文摘要: |
| To elucidate the effective utilization of aquatic plants to treat dairy farm wastewater, which were suggested to be key factors in the process of yellow iris purification of dairy farm wastewater, yellow irises cultured in dairy farms wastewater at different dilution ratios were used to examine the relationship between the growth rate of yellow iris and dilution concentration gradient. We also analyzed the correlation between the growth rate of yellow iris and the removal rate of pollutant and tolerance of yellow iris at different concentration in dairy farm wastewater. The results showed that yellow iris, as a common plant in water purification systems, could effectively reduce nitrogen and phosphorus in dairy farm wastewater and thereby improved water quality. When the concentration of dairy farm wastewater was higher than T3 level(15:1 dilution), indicating growth inhibition, the removal rates of chemical oxygen demand(COD), NH4+-N, TN, and TP after one week reached 57.1%, 59.49%, 82.59%, and 72.39%, respectively, of which the removal efficiencies of TN and TP showed the significant effects. When dairy farm wastewater was diluted and maintained at a level equivalent to the T3 level, iris growth was not inhibited, and better absorption and removal effect of pollutants in the dairy farm wastewater were observed. |
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