电解-水生植物-软隔离带复合技术治理重污染河流的中试研究

Pilot study on electrolysis-macrophyte-soft isolated belt composite technology for treatment of heavy polluted river

为了探索重污染河流的治理技术,2011年3月在无锡市新区鸿山镇徐塘桥河开展生态治理示范工程,通过电解技术、种植高等水生植物和构建软隔离带复合工程技术改善河流水质。实验结果表明,通过电解技术,可以迅速降低TP、氨氮(NH+4-N)和COD;但较难减少TN。通过软隔离带可以有效隔离外源污染,在较短时间内改善河流TN、TP、COD的平均水平,但是难以提高河流的生态系统稳定性。电解能够有效的降解大分子有机物,为水生植物提供良好的生长环境,之后再种植水生植物,能够进一步降低的TN、TP。通过电解-水生植物-软隔离带复合技术不仅能够全面改善河流水质的平均水平,而且能够修复水生生态系统,提高生态系统稳定性。

To explore the technologies to control heavy polluted rivers, we carried out the ecological engi- neering by use of the eleetrolysis-macrophyte-soft isolated belt composite technology in Xutangqiao River in Hong- shan Town, Wuxi in Mar. 2011. The results show that the soft isolated belt could isolate the external pollution effectively and improve the average level of TN, TP and COD in short time. However, it was difficult to improve the stability of the river ecosystem. The electrolysis could degrade macromolecular organic matter effectively to provide better condition for maerophytes. After it, the macrophytes could further reduce the level of TN and TP. The electrolysis-maerophyte-soft isolated belt composite technology could improve the average level of the water quality comprehensively, and increase the stability of the river ecosystem.