不同生物亲和改性剂对绳状人工水草污染物削减率的影响研究  

Effect of different biological affinity modifiers on pollutant reduction rate of rope-like artificial aquatic plants

作　　者：苏苑君 SU Yuanjun(Zhonggong Wuda Design Research Ltd.,Wuhan 430070,China)

机构地区：[1]中工武大设计集团有限公司,湖北武汉430070

出　　处：《水资源开发与管理》2022年第4期55-60,65,共7页Water Resources Development and Management

摘　　要：生物亲和改性可以有效改善涤纶的亲水性能。本文选取白糖、壳聚糖、可溶性淀粉作为生物亲和剂,对绳状人工水草进行改性,测定改性前后绳状人工水草的表征参数,并通过自然挂膜试验,监测其污染物削减效果。结果表明,污染物削减率和挂膜效果呈现同一趋势;绳状人工水草亲水性越好,对污染物削减率越高;亲水官能团与亲水性呈正相关关系,接触角与亲水性在一定情况下呈负相关关系,而粗糙度与亲水性无相关关系,但粗糙度提高有利于更多的微生物附着,在此次生物亲和改性研究中,亲水官能团对污染物削减率的影响明显大于粗糙度。该研究结果可为寻求更好的生物载体挂膜方法提供参考。Bioaffinity modification can effectively improve the hydrophilicity of polyester fiber.In this paper,white sugar,chitosan and soluble starch were selected as bio-affinity agents to modify rope-like artificial aquatic plants,and the characterization parameters of rope-like artificial aquatic plants before and after modification were measured,and the pollutant reduction effect was monitored by natural film hanging test.The results show that the reduction rate of pollutants and the effect of film formation show the same trend.The better the hydrophilicity of rope-shaped artificial aquatic plants,the higher the reduction rate of pollutants;Hydrophilic functional groups have a positive correlation with hydrophilicity,while contact angle has a negative correlation with hydrophilicity in some cases,while roughness has no correlation with hydrophilicity.However,the increase of roughness is beneficial to the attachment of more microorganisms.In this study of biological affinity modification,the influence of hydrophilic functional groups on pollutant reduction rate is obviously greater than that of roughness.The research results can provide reference for finding a better method of biofilm formation on biological carriers.

关 键 词：绳状人工水草 生物亲和剂 表征参数 污染物削减率 

分 类 号：TV41[水利工程—水工结构工程]