地表水源热泵尾水排放对三峡库区重庆段水生生态系统的影响分析  

EFFECTS OF TAIL-WATER OF SURFACE WATER HEAT PUMP SYSTEMS ON AQUATIC ECOSYSTEM OF THREE GORGES RESERVOIR IN CHONGQING

作　　者：黄向阳[1,2] 吴拓[2] 

机构地区：[1]长江大学城市建设学院,湖北荆州434023 [2]重庆大学城环学院,重庆400030

出　　处：《能源环境保护》2009年第6期21-25,共5页Energy Environmental Protection

基　　金：国家"十一五"科技支撑计划项目(2007BAB21B03-1)

摘　　要：基于三峡库区重庆段水文及水生生态系统特征,结合地表水源热泵示范工程的监测情况,分析了地表水源热泵尾水排放对三峡库区重庆段水生生态系统的影响。工程监测研究结果表明:尾水排放对排放口附近水域水温、溶解氧、氮、磷和浮游植物的影响表现为夏季水温升高导致溶解氧降低,氨氮、总氮和化学需氧量升高,蓝绿藻大量繁殖,富营养化加剧;冬季冷排水导致氨氮、总氮、总磷的升高,硅藻、绿藻数增多和蓝藻数减少,藻类物种多样性下降。对湖泊富营养化的影响是双方面的,即具有不确定性。分析认为尾水排放对排放口附近水域的水生动物及鱼类种群分布及数量均有影响,温排水可能导致其生长繁殖加快,成熟期缩短。地表水源热泵尾水排放对水生生态系统的影响程度主要取决于进出水的温差和排放量,也与水源的水文地质特征密切相关。Based on the characteristics of hydrology and aquatic ecosystem on Three Gorges Reservoir in Chongqing, combining with the monitoring condition about demonstration project, effects of tail-water of surface water source heat pumps on aquatic ecosystem to Three Gorges Reservoir in Chongqing are analyzed. The results of monitoring research on demonstration project show that in summer tail-water discharge.leads to the DO decreasing, and the NH3-N TN , COD increasing near outfall; Cyanobacteria is mass multiplication, so it accelerate eutrophication process of the lake; Cold discharge make NH3-N , TN,TP of lake near outfall increase. The quantity of Diatoms,and Green algae increase, hut Cyanohacteria decrease.and decline in species diversity. The impact of cold water discharge to eutrophication of lake is uncertainty. Argue that the population distribution and quantity of aquatic animals and fish near outfall are affected by tail-water of the system, Thermai discharge may impel to accelerate growth and reproduction of aquatic animals and fish, and shorten their maturity. Conclude that the degree of effect about tail-water of surface water heat pumps on Aquatic Ecosystem is mainly decided in the quantity of effluent and the temperature difference between influent and effluent,and it also has close relation with the hydrology and geology quanlity characteristics of water resource.

关 键 词：水源热泵 尾水 三峡库区 水生生态 

分 类 号：X524[环境科学与工程—环境工程]