湖泊理论藻源内负荷估算方法研究
发布时间：2019-06-21 13:13
【摘要】：在模拟不同温度和营养条件下,采用水质指标COD_(Cr)、COD_(Mn)、TP、TN表征湖泊典型藻类藻源内负荷、胞外负荷、胞内负荷,形成理论藻源内负荷理论估算的方法体系.5种藻源TP负荷A_(TP)均值随贫、中和富营养水平升高而升高,藻源TN负荷A_(TN)为负值,藻源COD_(Cr)负荷A_(CODCr)随营养水平升高而显著升高.藻源胞外TP负荷E_(TP)、TN负荷E_(TN)、COD_(Cr)负荷E_(CODCr)、COD_(Mn)负荷E_(CODMn)均随营养水平升高而降低,藻源胞内TP负荷B_(TP)、TN负荷B_(TN)、COD_(Cr)负荷B_(CODCr)和COD_(Mn)负荷B_(CODMn)总体随随营养水平升高而升高.根据藻源内负荷与藻密度显著相关关系,确定了藻源内负荷计算模型.藻源TP和COD在稳定期对水质的贡献均较大,为0.2-3.7倍,藻源TN内负荷对水质的贡献为负,减少的比例在26%-58%之间.本研究表明,藻类在增殖过程中产生了超出系统物质总量的"额外"负荷,这些藻源内负荷是引起水质指标,特别是COD异常升高的重要原因.该估算方法为富营养化湖泊水华的定量削减控制提供科学依据.
[Abstract]:Under different temperature and nutrition conditions, the water quality index COD_ (Cr), COD_ (Mn), TP,TN was used to characterize the intracellular load, extracellular load and intracellular load of typical algae sources in lakes, and the theoretical estimation method system of intracellular load was formed. The A( TP) mean value of TP load of five kinds of algae sources increased with the increase of poverty and neutralization eutrophication level, and the TN load A( TN) of algae sources was negative. The COD_ (Cr) load A _ (CODCr) of algae increased significantly with the increase of nutrition level. The extracellular TP load E( TN), COD_ (Cr) load E( CODCr), COD_ (Mn) load E( CODMn) decreased with the increase of nutrition level, while the intracellular TP load B( TP), TN load B( TN), COD_ (Cr) load B( CODCr) load and COD_ (Mn) load B( CODMn) load increased with the increase of nutrition level. According to the significant correlation between the internal load of algae source and the density of algae, the calculation model of internal load of algae source was determined. The contribution of algae source TP and COD to water quality in stable period was 0.2 鈮，
本文编号：2504104
[Abstract]:Under different temperature and nutrition conditions, the water quality index COD_ (Cr), COD_ (Mn), TP,TN was used to characterize the intracellular load, extracellular load and intracellular load of typical algae sources in lakes, and the theoretical estimation method system of intracellular load was formed. The A( TP) mean value of TP load of five kinds of algae sources increased with the increase of poverty and neutralization eutrophication level, and the TN load A( TN) of algae sources was negative. The COD_ (Cr) load A _ (CODCr) of algae increased significantly with the increase of nutrition level. The extracellular TP load E( TN), COD_ (Cr) load E( CODCr), COD_ (Mn) load E( CODMn) decreased with the increase of nutrition level, while the intracellular TP load B( TP), TN load B( TN), COD_ (Cr) load B( CODCr) load and COD_ (Mn) load B( CODMn) load increased with the increase of nutrition level. According to the significant correlation between the internal load of algae source and the density of algae, the calculation model of internal load of algae source was determined. The contribution of algae source TP and COD to water quality in stable period was 0.2 鈮，
本文编号：2504104
本文链接：https://www.wllwen.com/shengtaihuanjingbaohulunwen/2504104.html
