| 河道微污染水体旁路复合流湿地强化净化技术研究及应用 |
| |
| 引用本文： | 王文冬,高晓薇,王利军,刘学燕,焦振寰.河道微污染水体旁路复合流湿地强化净化技术研究及应用[J].环境工程,2023,41(1):158-163. |
| |
| 作者姓名： | 王文冬 高晓薇 王利军 刘学燕 焦振寰 |
| |
| 作者单位： | 1. 北京市水利规划设计研究院, 北京 100048; |
| |
| 摘 要： | 为实现河道微污染水体水质净化与行洪排涝双重功能，采用下向流/上向流复合流旁路湿地工艺，设计有机负荷qos=21 kg BOD5/(hm2·d),水力负荷qhs=0.34 m3/(m2·d),水力停留时间HRT=2.2 d,同时为提高冬季低温条件下的湿地系统净化效果，对湿地填料床结构形式、植物组合搭配以及冬季低温运行措施进行了优化，研究表明：1)下向流/上向流复合流功能湿地空间布设灵活，可节约建设占地，通过折流布水，可形成良好的厌氧/缺氧/好氧微生环境，有益于发挥湿地系统的脱氮除磷效果；2)通过增加保温填料覆盖层、采取低温冰下低水位运行、辅以耐低温植物/微生物强化，在冬季低温湿地进水ρ(COD)为30～40 mg/L,ρ(NH3-N)为1.5～2.0 mg/L,ρ(TP)为0.3～0.4 mg/L条件下，实现了3个标段湿地出水平均值ρ(COD)=20.67 mg/L,ρ(NH3-N)=0.77 mg/L,ρ(TP)...
|
| 关 键 词： | 旁路湿地 复合流 低温运行 净水效果 |
| 收稿时间： | 2022-04-29 |
RESEARCH AND APPLICATION OF ENHANCED PURIFICATION TECHNOLOGY OF MICRO-POLLUTED WATER BODIES BY BYPASS COMPOUND FLOW WETLAND IN A RIVER CHANNEL |
| |
| Affiliation: | 1. Beijing Institute of Water, Beijing 100048, China;2. Beijing Changping District Hydrology and Water Quality Monitoring Center, Beijing 102200, China |
| |
| Abstract: | In order to realize the dual functions of water purification and flood discharge and drainage in the micro-polluted river, this study constructed a kind of bypass wetland with a downward-upward compound flow process. The main parameters of the project were organic load, hydraulic load and hydraulic retention time, which were 21 kg BOD5/(hm2·d), 0.34 m3/(m2·d), 2.2 d, respectively. At the same time, the project was optimized by the structure of the wetland packing bed, the plant combination and the low-temperature operation measures in winter. The main conclusions were as follows:1) the downward/upward-flow composite functional wetland had a flexible spatial layout. The construction could save the land, and form a good Anaerobic/Anoxic/Aerobic microbial environment, which is conducive to the removal of nitrogen and phosphorus from the wetland system; 2) by adding the covering layer of thermal insulation filler, operating at low water level under low-temperature ice, and strengthening with low temperature-resistant plants/microorganisms, COD concentration, ammonia nitrogen concentration, and total phosphorus concentration of the effluent of the three bidding sections was 20.67 mg/L, 0.77 mg/L,0.17 mg/L, under their influent concentration of 30~40 mg/L, 1.5~2.0 mg/L and 0.3~0.4 mg/L in winter, basically meeting the water quality design goal under low-temperature conditions in winter. |
| |
| Keywords: | |
|
| 点击此处可从《环境工程》浏览原始摘要信息 |
|
点击此处可从《环境工程》下载全文 |
|
