水位变化对人工复式河道水质净化效果的影响  

Effect of Water Level on Water Purification in Compound Channel

作　　者：邓斌 孙艺峰 王雪松 张刚[2] DENG Bin;SUN Yi-feng;WANG Xue-song;ZHANG Gang(Zonbong Landscape Planning and Design Co.,Ltd.,Changchun Jilin 130000,China;School of Environment,Northeast Normal University,Changchun Jilin 130117,China;Zonbong Huize Landscape Environment Construction Co.,Ltd.,Changchun Jilin 130000,China)

机构地区：[1]中邦山水规划设计有限公司,吉林长春130000 [2]东北师范大学环境学院,吉林长春130117 [3]中邦汇泽园林环境建设有限公司,吉林长春130000

出　　处：《长春师范大学学报》2019年第6期108-111,共4页Journal of Changchun Normal University

基　　金：水体污染控制与治理科技重大专项“饮马河流域水污染综合治理与水质改善技术研究与示范课题”(2014ZX07201-011)

摘　　要：复式河道是常见的一种河道形式,现阶段关于复式河道的研究大多集中在复式河道的水流结构、水流特性、过流能力、垂线流速分布规律、边界剪切应力的分布特征、滩槽相互作用机理等水力学及河流动力学方面,而对复式河道的净水效果关注较少。本文通过模拟复式河道的主河槽和滩地,研究不同运行水位条件下人工复式河道对水体的净化效果:在实验室模拟条件下,复式河道漫滩水位对水质净化效果有显著影响,漫滩水位在基质面以上1 cm时,溶解氧(DO)增加量最高,对COD、氨氮的处理效果最好,水位升高或降低,DO的增长率和COD、氨氮的去除率都有所下降,而水位的改变对总磷的去除效果影响不大,本文的研究结果可为河流生态修复提供理论基础。A compound channel is a common form of a river in nature. At present, most of researches of compound channel concentrates on the hydraulic and kinetics of river, such as the flow structure and characteristics, discharge capacity, velocity distribution, distribution of boundary shear stress, interaction between main channel and flood plain, etc. However, the effect of compound channel on water purification is less concerned. In this paper, the water purification by artificial compound channel under different water levels was studied in a simulation device. The results showed that water levels in floodplain had a significant effect on water purification. When the water level was 1 cm above the floodplain, the increase of dissolved oxygen(DO) is the highest and the treatment effect of chemical oxygen demand (COD) and ammonia nitrogen is the best. The rise rate of DO and the removal rate of COD and ammonia nitrogen declined under other water levels, but the change of water level had little effect on the removal of total phosphorus. The results of this study can provide a theoretical basis for river ecological restoration.

关 键 词：复式河道 水位 净化 污染物 

分 类 号：X52[环境科学与工程—环境工程]