河流水生态提升的初步探索与实践
2021-07-28张桐赵航马林王香莲陈彤胡清
张桐 赵航 马林 王香莲 陈彤 胡清



摘 要:该项目采用的强化OHR微纳米曝气技术和碳纤维生态草相结合的创新工艺,对河流水生态提升过程进行了实践探索。君兰河在经过原位治理后水质得到了明显提升,水中氨氮等的污染指标显著下降,水体从地表劣V类水达到V类水质的标准。该技術的成功应用为河流水生态的治理与恢复提供了良好的示范,未来有望得到进一步的推广和应用。
关键词:水生态 微纳米曝气 碳纤维 生态浮岛
中图分类号:X019 文献标识码:A文章编号:1672-3791(2021)04(a)-0001-05
Preliminary Practice and Exploration of River Ecology Improvement
ZHANG Tong1,2 ZHAO Hang1,2 MA Lin1,2 WANG Xianglian CHEN Tong1,2 HU Qing1,2
(1.School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong Province, 518055 China; 2.Engineering Technology Innovation Center
(Beijing) of South University of Science and Technology, Beijing, 100083 China)
Abstract: In this project, an innovative process of strengthening OHR micro-/nano-aeration technology and carbon fiber ecological grass was carried out in order to explore the process of river ecology improvement. The water quality of Junlan river has been significantly improved after an in-situ treatment process, and some pollution indexes in the water decreased significantly. The current water quality of Junlan river is better than class V of surface water quality standard. The successful application of this technology provides a good demonstration for river ecology management, which is expected to be further spread and applied in near future.
Key Words: Water ecology; Micro-/nano-aeration; Carbon fiber; Ecological floating island
河流水环境的治理主要可以通过减少外源污染物输入、控制内源污染物释放、水质净化、生态修复和补水活水几种方式[1]。对于已被污染的河道,对水体进行水质净化并提升水生态功能是经常采用的治理方式。
高级氧化由于其所产生的羟基自由基等超氧分子的氧化能力强,反应速度快,产物无二次污染、可提高水体含氧量等优点,可以应用于富营养化和黑臭水体治理中[2]。鲁秀国等研究者采用臭氧高级氧化的方法处理黑臭水体,在pH=7~10、臭氧添加量为90~150 mg/L时,对COD的去除率为40%左右[3]。缪恒锋[2]用实验室自制研发的太阳能水处理系统,以太湖某一水体为处理对象,研究臭氧在实际环境中对富营养化水体的治理效果,经15天的处理,水质颜色明显变清,蓝藻消退,COD去除率为78.9%。氨氮降低了50.6%,水体溶解氧达到6.2 mg/L。然而,臭氧的直接氧化能力弱于其所衍生的超氧分子,其在水中的传质效率也很有限。……
