毕业设计
设计题目:某湖泊的生态修复治理设计方案
姓名:学号:院(系):专业:指导教师:
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f某湖泊的生态修复治理设计方案摘要:本文设计的对象是位于贵州省贵阳市的红枫湖和百花湖。针对两湖底泥污染
严重,以及生活污水、工业废水未经深层处理就排入湖库内,导致湖库内氮、磷浓度高等问题,政府及相关部门组织实现流域内污水的集中处理再排入湖体,投资大力兴建污水处理厂,对排入两湖的水源进行严厉监管,才能从根本上截断外源。提出了首先运用机械疏挖的方法,清除重金属元素等长期积蓄的底泥。其次在湖体内应用曝气循环净化系统,主要可抑制微囊藻的增殖释放有毒物质。这次应用的主要工艺为生态公园水培净化,净化效率高同时也降低了净化成本。
本设计计划在红枫湖设置250台潜流推流曝气机,在百花湖设置63台潜流推流曝气机用于水湖底曝气循环净化,预计有害藻类的去除率可达86。在两湖修建的生态公园预计净化效果:COD去除率达26,SS去除率达44,BOD去除率达38,TP、TN去除率约达20。在两湖进行底泥疏挖,可有效的去除了底泥内的重金属元素,并且防止它们向湖水上层扩散。
关键词:湖泊富营养化;底泥疏挖;曝气;生态公园修复
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