WANGZhen,JIANGBin,ZHANGAo.Efficacy and Mechanism of Enhanced Ecological Floating Bed for Purification of Eutrophic Water Bodies[J].China Water & Wastewater,2025,41(7):17-23.
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Efficacy and Mechanism of Enhanced Ecological Floating Bed for Purification of Eutrophic Water Bodies

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第41卷 Number: 第7期 Page: 17-23 Column: Date of publication: 2025-04-01
Author(s):
WANG　Zhen1; 2;  JIANG　Bin1; 2;  ZHANG　Ao1; 2
（1. School of River and Ocean Engineering， Chongqing Jiaotong University， Chongqing 400074， China； 2. Engineering Laboratory of Environmental Hydraulic Engineering of Chongqing Municipal Development and Reform Commission， Chongqing Jiaotong University， Chongqing 400074， China）
Keywords:
ecological floating bed;  eutrophic water body;  modified biochar;  algal inhibition ability
Abstract:
Traditional ecological floating bed（EFB) has certain limitations when used for water purification, such as single plant species selection, unsatisfactory filling effect, low pollutant removal efficiency, and poor system stability. An enhancement of EFB was achieved by integrating dominant species and a novel Mg-Al modified corn straw biochar filler (MACSB), which significantly improved its efficacy in treating eutrophic water bodies. The MACSB filler not only improved phosphorus utilization and algae inhibition，but also did not adversely affect plant growth. The composite of plant combination and MACSB filler reached peak performance, with removal rates for TN, TP, COD and NH4+-N at 78.41%, 96.83%, 72.16% and 99.54%, respectively, while also achieving optimal NO3--N accumulation. High-throughput sequencing demonstrated that introducing dominant species and MACSB fillers markedly influenced the microbial community structure, highlighting distinct microbial profiles across different systems. Enhancements to the EFB design have significantly boosted its restoration capabilities.
Last Update: 2025-04-01