The College of Material and Environment, Hangzhou Dianzi University, Hangzhou, Zhejiang, China.
The Institute of Municipal Engineering, The College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, Zhejiang, China.
Bioresour Technol. 2018 Nov;268:665-671. doi: 10.1016/j.biortech.2018.08.048. Epub 2018 Aug 16.
An enzyme treatment was developed and evaluated for its effectiveness in alleviating bioclogging through a laboratory-scale vertical-flow constructed wetland (VFCW) experiment in this study. The enzyme preparation was a combination of α-glucoamylase and β-glucanase. The results show that the enzyme treatment greatly reduced bioclogging, and the peak hydraulic conductivity after treatment increased by a factor of 16, mainly because polysaccharides in the clogging matter were decomposed and the gelatinous clogging matter was dissolved and dispersed. The results also show that the abundance of Proteobacteria microbes increased by 89.4% after the enzyme treatment, although the diversity of the microbial community within the substrate decreased slightly. These microbes can increase the capability of the constructed wetland to purify influent water, and thus the rate of reduction of COD improved. It offers a solution to the problem of bioclogging in constructed wetlands.
本研究通过实验室规模的垂直流人工湿地（VFCW）实验，开发并评估了一种酶处理方法，以减轻生物堵塞的效果。酶制剂是α-葡聚糖酶和β-葡聚糖酶的组合。结果表明，酶处理大大降低了生物堵塞，处理后的峰值水力传导率增加了 16 倍，主要是因为堵塞物中的多糖被分解，胶状堵塞物被溶解和分散。结果还表明，酶处理后，变形菌门微生物的丰度增加了 89.4%，尽管基质内微生物群落的多样性略有下降。这些微生物可以提高人工湿地净化进水的能力，从而提高 COD 的去除率。它为人工湿地中的生物堵塞问题提供了一种解决方案。
