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生物载体安装间距对河湖污染物削减率影响的试验研究

The Influence of Different Biological Carriers on Pollutant Reduction Rate Installation Spacing

  • 摘要: 为研究生物载体安装间距对河湖污染物削减率的影响,选取国内河湖水环境治理中应用较广泛的绳状人工水草、生物帘以及碳纤维水草,进行15 d模拟污水净化试验。试验结果表明:(1)绳状人工水草和碳纤维水草均呈现出随着安装间距的减小对污染物削减率越来越大的趋势,绳状人工水草为10 cm间距处理组时,碳纤维水草为15 cm间距处理组时,其对污染物的综合削减率最大,此时对总氮、总磷、铵态氮、COD的平均削减率分别为0.44、0.32、0.38、0.44和0.44、0.35、0.35、0.52;生物帘则表现出相反的趋势,安装间距越大,对污染物的削减率越大,在60 cm间距处对污染物的削减率最大,此时对总氮、总磷、铵态氮、COD的平均削减率分别为0.42、0.35、0.42、0.52。(2)建议绳状人工水草的安装间距为10~15 cm,碳纤维水草的安装间距为15~20 cm,生物帘的安装间距宜大不宜小,建议安装间距为60 cm左右。(3)生物帘性价比最高,其次是绳状人工水草,碳纤维水草的性价比最低,且在试验范围内安装间距越大,性比价越高。

     

    Abstract: In order to study the influence of pollutants reduction rate on different installation spacing of biological carriers,rope artificial water plants,biological curtains and carbon fiber water plants,which are widely used in domestic water environment project,are selected to conduct a 15-day trial on waste water. The results are as follows:(1) The pollutants reduction rate increases with the decreasing spacing of the rope artificial water plants and carbon fiber water plants,when the rope artificial water plants are at 10 cm spacing treatment and the carbon fiber water plants are at 15 cm spacing treatment,the comprehensive reduction rate of pollutants is the largest,the corresponding average reduction rates of total nitrogen,total phosphorus,ammonium nitrogen,and COD are 0.38,0.32,0.34,0.44 and 0.44,0.35,0.35,0.52,respectively. While biological curtains show an opposite trend,when the biological curtains are at 60 cm spacing treatment,the comprehensive reduction rate of pollutants is the largest,the corresponding average reduction rates of total nitrogen,total phosphorus,ammonium nitrogen,and COD are 0.42,0.35,0.42,0.52.(2) It’s recommended that the arrangement installation spacing of rope artificial water plants and carbon fiber water plants is 10~15 cm and 15~20 cm respectively,the installation spacing of biological curtains should be large rather than small,the recommended installation spacing is about 60 cm.(3) Biological curtains are the most cost-effective,followed by rope artificial water plants,while carbon fiber water plants have the lowest cost-effectiveness. Meanwhile,the larger the installation spacing,the better the cost performance within the test range.

     

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