尔王庄水库水质分析及改善措施

介绍了尔王庄水库水质现状,通过对影响水库水质要素的分析,研究出水库水质自净规律,提出了用生态方法改善水质的措施,为科学改善水库水质提供了重要依据。     

陈行水库水质模型与自净规律研究

应用WIN/DYNHYD+和WASP6建立了陈行水库水动力模型和水质模型,并对水质模型中水质参数进行率定和验证;应用建立的陈行水库水质模型研究了陈行水库的自净规律。研究表明,陈行水库的水温、水位、流场、水力停留时间对水库自净作用有很大影响;在水温正常变化范围内,水温越高,水力停留时间越长,陈行水库自净能力就越强,并提出陈行水库运行管理建议。     

二龙湖水域自净能力浅析

水库水域具有一定的自净能力,但是有限的,要彻底改变水库的水质状况,还要采取工程措施和非工程措施才能实现经济增长与水环境保护的协调发展。     

漳泽水库水质监测与污染防治

漳泽水库是浊漳河南源于流上一项综合利用的控制性工程，位于长治市北郊２０ｋｍ，控制流域面积３１７６ｋｍ２，总库容４．２７亿ｍ３。其水质６０年代完全符合国家生活饮用水标准；７０年代，未经处理的工业废水和城市生活污水大量排入库内，使水库水质逐渐恶化；８０年代，由于控制污水排入及库水稀释自净，水库水质有所好转；９０年代，继续采取相应的防治措施，水质有所改善。监测结果表明，漳泽水库水质属轻度污染，适用于集中式生活饮用水的水源及其他各种用水需要。１水质监测布设为了解漳泽水库水质变化，掌握水污染源，采取针对性…     

漳泽水库水环境污染现状及控制对策

根据漳泽水库的水质监测资料,对漳泽水库的现状水质进行了评价,确定了水库水污染类型,分析了水污染成因,最后提出了水库水污染的具体控制措施,为改善漳泽水库的水环境质量提供了科学的依据。     

三峡工程施工期坝下游河段水质评价与自净规律研究

首先在三峡工程施工期源调查的基础上进行了坝下游河段水质现状的评价，结果表明三峡工程施工期对下游长江干流水质没有显著性影响。再根据坝下游三斗坪河段长期水质监测资料进行了水质年际变化规律的研究，结论是该河段水质年均值没有明显的趋势性变化规律，最后根据秭归县泄滩乡清水溪的一次突发性污染水团的追踪监测资料，利用水环境污染反总理２模型和反演算法研究了三峡工程坝区下游河段水体的自净规律，说明该河段水体自净能力     

漳泽水库环境水质变化趋势与渔业生产关系的动态研究

2007-2010年对漳泽水库水质进行了监测,通过对监测数据进行分析统计,探讨了漳泽水库水质发展趋势与渔业生产关系,并提出了对其生态环境进行维护和修复的对策及建议。     

潇河流域水质污染的空间变化特征

基于流域布设断面取样点的月监测数据,分析了潇河流域水质的空间变化特征及流域水体的自净能力。结果表明,潇河主流松塔河水质较好,属于Ⅲ类水质;支流白马河水质较差,属于劣Ⅴ类水质,是影响潇河流域水质的主要因素。流域附近乡镇未经处理的生活污水以及工业废水的排放是造成潇河流域水质污染的主要原因。从空间尺度上看,CODCr、NH3-N、TP含量沿河流从上游到下游大致呈现出逐渐降低的趋势,表明潇河流域水体具有一定的自净能力,但自净能力较差。水体自净系数与水力坡降之间存在指数关系。     

广州城市河流形态对河流自净能力的影响

构建了包括河道分维数、河道断面形态、河岸基质、河岸带宽度、河岸带植被盖度、河床底质状况、河床栖境复杂性共7项指标的城市河流形态评价体系,并以乌涌广州市开发区段为研究对象,通过定期水质监测研究河流形态对河流自净能力的影响。结果表明,该评价体系能够反映研究河段的形态差异;不同形态河段水体BOD5降解系数及多项水质指标沿程降解率均有显著性差异;河流形态评价得分较高的河段水体自净能力也较强;河流形态与NH3-N、SS、DO和浊度的降解存在相关性,是影响河流自净能力的重要因素。     

滞缓流河湖水体自净能力影响因素研究

目前,针对北方城市滞缓流水体的自净能力及其主要影响因素的研究还处于起步阶段,自净能力的计算缺少相应的模式.在深入研究滞缓流河湖水体自净机理的基础上,通过室内及室外模拟实验、物理模型实验和现场实验,研究了不同水质、流速、护坡结构形式及季节对水体自净能力的影响,为滞缓流水体的水系规划、水生态修复等提供技术支撑.     

Impact of Dam Construction on Water Quality and Water Self-Purification Capacity of the Lancang River, China

Along with the sequent completion of Manwan and Dachaoshan Dam, the river continuum of the middle and lower reaches of the Lancang River was separated into three types of segments: reservoir, below-dam segment and downstream flowing segment. The long-term series of water quality and river flow data over 20 years were analyzed in order to study the impact of dam construction and operation on water quality and water self-purification capacity of these different river segments. From pre-dam period to the first 7 years after Manwan Dam had been accomplished, the water quality of Manwan Reservoir became worse due to the accumulation of pollutants, and then to the next 5 years the water quality became better in virtue of the water self-purification of the reservoir. The cooperative operation of Manwan and Dachaoshan Dam had cumulatively positive impacts on water quality of their below-dam segment but no impacts on that of downstream flowing segment. From pre-dam period to the first 7 years after the closure of Manwan Dam, the water self-purification capacity of Xiaowan–Manwan segment for BOD₅, COD_Mn and NH₃–N decreased. Also, the water self-purification capacity of Manwan–Dachaoshan segment for BOD₅ and COD_Mn decreased but for NH₃–N increased. However, the water self-purification capacity of Jinghong–Ganlanba segment changed contrary to Manwan–Dachaoshan segment. In general, the construction of Manwan Dam negatively affected the water self-purification capacity of reservoir and below-dam segment but impose little impact on that of downstream flowing segment. This study suggested that it is necessary to pay attention to the effect of complicated temporal and spatial characteristics of dam on aquatic ecosystem.     

闽江梯级电站对水环境的影响

从闽江流域历年主要污染物排放量、控制断面水质浓度和径流量变化三者之间关系入手,针对闽江梯级电站开发程度较高,而且绝大多数电站建成投产于1993年以后的特点,根据水体自净机理,分析梯级电站对闽江水环境的影响.结果表明:闽江梯级水库对污染物质的层层拦蓄,在相当程度上减轻了下游与河口地区污染物总量,对缓解下游与河口地区污染危...     

漳泽水库富营养化调查与评价

通过对漳泽水库水质营养源分析，说明造成水质富营养化的外源污染物主要为CODcr、NH3-N，内源污染主要为网箱养鱼源。浮游植物调查和蚕豆根尖细胞微核试验结果与主要水化学指标评价较为一致。针对调查结果，结合实际提出了水库富营养化的防治措施。     

Impact of hydroelectric projects on river environment: Analysis of water quality changes in Ningxia Reach of Yellow River

In this paper, the relationship between hydroelectric projects and the river environment is analyzed. Recently, the large-scale regulation of runoff by large hydroelectric projects in the Ningxia Reach of the Yellow River has altered natural runoff processes, causing an increase in the probability of low discharge and an overall adjustment of riverbed evolution and river characteristics. During low-flow years, the combined effects of these two changes can weaken the self-purification capacity and reduce the water environmental capacity of the river. This is one of the main reasons for the recent decrease of water quality in the Ningxia Reach. This research shows that it is necessary to implement river training projects to maintain stable flow paths, not only for adjusting river regimes and for flood control, but also for increasing the self-purification capacity and the water environmental capacity of the river. Methods and proposals for coordinating the operation of hydroelectric projects with the protection of the river environment are presented in the interest of promoting sustainable development.     

漳泽水库汛期分期研究

对漳泽水库控制流域的水文气象特征进行了分析,利用统计学方法分析了漳泽水库汛期各旬平均降雨量变化、暴雨发生时间分布、洪水发生时间分布。研究表明漳泽水库入库洪水呈现出较为明显的分期特征,将漳泽水库的汛期分为三期。该分期方案与降雨天气系统的季节性变化规律一致,可为漳泽水库汛限水位动态控制提供参考     

长治市城区水资源统一管理及合理配置

本文介绍了长治市水资源及城市供水状况，并提出了加强水资源合理配置的建议。