新建公园湖泊水生态原位立体修复技术探讨  

Discussion on the technology of in-situ stereoscopic restoration of lake ecology applied in new parks

作　　者：罗利 冯明友[2] LUO Li;FENG Ming-you(China MCC5 Group Co.,Ltd.,Chengdu 610063,China;School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610065,China)

机构地区：[1]中国五冶集团有限公司,四川成都610063 [2]西南石油大学地球科学与技术学院,四川成都610065

出　　处：《环境生态学》2023年第9期80-87,共8页Environmental Ecology

基　　金：中国工程院重大咨询项目(2015-ZD-05-09-05);四川省发改委重点课题(ZH2015038)资助。

摘　　要：为解决新建城市公园湖泊生态环境问题,以成都东安湖体育公园内新建的东安湖为例开展湖区水生态修复方案研究。针对东安湖水源污染成因及湖区周边地形等特点,利用场地内散布水塘串联整合成湖,采用水动力理论模拟与实际施工相结合的方法,提出重力式水动力净化技术。利用BPMs非点源污染综合评价模型,构建边际水环境屏障系统;通过“控、改、构、提、增”组合措施,构建湖体水生态原位净化系统。结果表明,水生态系统建成1年后,湖水水体透明度、污染物、化学需氧量(COD)等均较构建前有显著改善;水体透明度大于2.8 m,总磷(TP)0.01~0.03 mg/L、氨氮(NH_(3)-N)0.03~0.113 mg/L、溶解氧(DO)7.4~8.2 mg/L,达到Ⅱ类地表水标准。重力式水动力净化技术结合边际水环境屏障系统,可快速构建湖区水生态原位净化系统,有效解决城市公园湖泊水体生态系统问题。To solve the ecological environmental problems of lakes in newly built urban parks,based on the analysis of the causes of water source pollution of the newly built Dong'an Lake in Chengdu Dong'an Lake Sports Park and the topographic characteristics around the lake area,an ecological restoration plan was formulated.The scattered ponds in the site were used to form a lake in series.The method of combining hydrodynamic theoretical simulation with actual construction was adopted,and the gravity hydrodynamic purification technology was proposed.The comprehensive assessment model of BPMs non-point source pollution was used to build the marginal water environmental barrier system.Through the combined measures of“control,reform,structure,improvement and increase”,the lake water ecological in-situ purification system was constructed.The results showed that the transparency,pollutants concentration and chemical exygen demand(COD)of the lake water body were significantly improved one year after the establishment of the water ecosystem.The transparency of the water body was greater than 2.8 m,the total phosphorus value was 0.01~0.03 mg/L,the ammonia nitrogen value was 0.03~0.113 mg/L,the dissolved oxygen value is 7.4~8.2 mg/L,and met the ClassⅡwater standard.Research conclusion is that:The combination of the gravity hydrodynamic purification technology and the marginal water environmental barrier system can quickly construct a lake water ecological in-situ purification system,effectively solving the problems of urban park lake water ecosystem.

关 键 词：水生态 屏障系统 生物修复 水体透明度 溶解氧 

分 类 号：X171.4[环境科学与工程—环境科学]