信息熵在人工湿地布水性能评价中的应用探析

1、    信息熵在人工湿地布水性能评价中的应用探析    摘要 研究了信息熵应用于垂直流人工湿地布水性能评价中的可行性。结果表明：其评价结果不受时间和单次布水总量的影响，能有效将布水面积与基质底部各位置接水量的均匀性结合起来，评价结果更具有实际意义。对于单一粒径510 mm、连通孔隙率25.3%32.9%的粘结型模块化基质而言，布水性能随布水管单孔进水流量的增大而提高得越来越慢，运行初期布水管单孔最佳进水流量为600 ml/min;布水性能随基质深度的增加而提高，在深度为70 cm以后布水性能提高不再明显。关键词 垂直流人工湿地;信息熵; 布水性能;水力学

2、性能x824 a0517-6611（2019）21-0219-04doi：10.3969/j.issn.0517-6611.2019.21.066开放科学（资源服务）标识码（osid）：application of shannon entropy in evaluation of water distribution performance of constructed wetlandszhang li（shanghai municipal sewerage co.，ltd.，shanghai 200000）abstract the feasibility of shannon entropy

3、 application to water distribution performance evaluation in vertical flow constructed wetlands was studied.the results show that the evaluation results are not affected by the time and the total amount of single water distribution，and can effectively combine the area of water distribution and water

4、 collection uniformity of each position at the bottom of the substrates.the evaluation results were of more practical significance.for the cementitious modular constructed wetlands with a connected porosity of 25.3%-32.9% and a single particle size of 5-10 mm，the water distribution performance incre

5、ased more slowly with the increase of the singlehole inflow rate of the distribution pipe，and the optimal singlehole inflow rate of the distribution pipe was 600 ml/min during initial operation period;the water distribution performance increased with the increase of the depth of the substrate，and the water performance improvement was no longer obvious after the depth is 70 cm.key words vertical flow constructed wetland;shannon entropy;water dist