...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Archives of Hydro-engineering and Environmental Mechanics >Performance of Subsurface Vertical Flow Constructed Wetlands Receiving Municipal Wastewater
【24h】

Performance of Subsurface Vertical Flow Constructed Wetlands Receiving Municipal Wastewater

机译：地下垂直流人工湿地接收城市污水的性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The efficiency of pollution removal from municipal sewage in two vertical flow constructed wetlands consisting of gravel filters with a surface area of 4 x 5 m, depth 60 cm, planted with reed (Phragmites) was assessed over a period of about two years. The flow of wastewater was 50 mm per day. Wastewater underwent only primary treatment before application to reed bed B, but reed bed A was supplied with wastewater after mechanical and biological treatment. Measurements were taken of sewage supply and discharge, precipitation and wastewater temperatures. The main indicator of efficiency was the elimination of suspended solids, BOD_5, nitrogen and phosphorus from the wastewater during treatment. The elimination of the pollution load was 2-25 g O_2 per square meter per day for the BOD_5 and 0-3.5 g per square meter per day for so-called "total nitrogen". Rates of pollution removal were between 2 and 4 times as high in bed B (after primary treatment) as in bed A (after biological treatment), but the loading rate of bed B was also substantially higher. The rate of BOD_5 removal and the coefficient k for BOD_5 were greatly dependent on temperature for reed bed B (primary tretament); less so for bed A (biological treatment). The difference between summer and winter temperatures indicates that the surface area of constructed wetland B with wastewater after mechanical treatment should be about 3 times greater during winter, to obtain the summer rate of BOD_5 pollution removal in the climatic conditions of Northern Poland (54°N).
机译：在大约两年的时间内，评估了在两个垂直流动的人工湿地中从市政污水中去除污染的效率，该湿地由表面积为4 x 5 m，深度为60 cm的芦苇（芦苇）组成的砾石滤池组成。废水流量为每天50毫米。在施用于芦苇床B之前，废水仅进行了初步处理，但经过机械和生物处理后，芦苇床A却被提供了废水。测量了污水的供应和排放，降水和废水温度。效率的主要指标是在处理过程中消除了废水中的悬浮固体，BOD_5，氮和磷。对于BOD_5，消除的污染负荷为每天每平方米2-25 g O_2，对于所谓的“总氮”为每天每平方米0-3.5 g O_2。床B（初级处理后）的污染去除率是床A（生物处理后）的2至4倍，但床B的装载率也高得多。 BOD_5的去除速率和BOD_5的系数k很大程度上取决于芦苇床B（主要沉积物）的温度。床A（生物处理）的情况则更少。夏季和冬季温度之间的差异表明，经过机械处理的人工湿地B的表面积在冬季应增加约3倍，以便在波兰北部的气候条件下（54°N）获得夏季的BOD_5污染物去除率。 ）。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号