昆山市凌家浜黑臭水体生物治理与生态修复

Biological Treatment and Ecological Restoration of Malodorous Water in Kunshan Lingjiabang

以昆山市凌家浜黑臭水体治理为目标，应用生物治理与生态修复组合技术治理城市河道，通过设置生物膜自净设备、微纳米曝气增氧设备、种植水生植物、投放水生动物等措施对该水体进行治理修复。结果表明，经过6个多月的运行，该河道水质有了明显改善，主要水质指标COD、总磷、氨氮等达到了《地表水环境质量标准》（GB3838-2002）的Ⅲ～V类标准，水体透明度达到0．5m左右，甚至接近1m；恢复了河道中由挺水、沉水等多种水生植物和动物组成的水体和水陆交错带的生态系统，增加了河道中的生物多样性，强化了水体的自净能力；明显改善了河道的景观效果。实践证明，该组合技术能够有效去除水中有机物、氨氮、总磷等污染物，增加水体的溶解氧和透明度，在技术上是可行的，若同时加强环保监管与定期运行管理，则可从根本上恢复河流系统的生态。

Biological treatment and ecological restoration measures, such as purification equipment and micro/nano bubble aerator, planting aquatic plants, and ic animals were taken to treat malodorous water from Lingjiabang in Kunshan City. making biofilm self- putting on the aquat- After the commissio- ning and operation for more than six months, the river water quality was significantly improved. Main water quality indexes such as COD, TP and NH4^＋ - N reached the class Ⅲ to Ⅴ criteria specified in the Environmental Quality Standards for Surface Water （GB 3838 -2002）. The water transparency was in- creased to 0.5 m or 1 m. The river ecosystem composed of emergent and submerged plants and aquatic animals was restored, the biological diversity in was strengthened, and the river landscape effect the river was increased, the river self-purification ability was improved. The findings showed that it was technicalty feasible to use the above-mentioned measures to remove organic compounds, NH4 -N and TP increase DO and transparency. In addition, the environmental regulatory enhancement and the operation management are helpful to restore the ecological environment of the river system. and to regular