期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
南四湖入湖重点污染河流筛选与水环境问题分析 被引量:21
1
作者 武周虎 张晓波 张芳园 《长江流域资源与环境》 CAS CSSCI CSCD 北大核心 2011年第4期475-481,共7页
根据南四湖主要河流入湖口水质空间分布监测数据,按平均综合污染指数Pj>2的标准共筛选出洸府河和薛城小沙河等17条重污染河流,这些河流CODcr、TP、TN的单项污染贡献率平均值依次为45.5%、76.3%、86.4%,说明南四湖TN和TP主要来自于重... 根据南四湖主要河流入湖口水质空间分布监测数据,按平均综合污染指数Pj>2的标准共筛选出洸府河和薛城小沙河等17条重污染河流,这些河流CODcr、TP、TN的单项污染贡献率平均值依次为45.5%、76.3%、86.4%,说明南四湖TN和TP主要来自于重污染河流,CODcr、TP、TN的单项污染分担率平均值依次为22.7%、15.4%、61.9%,说明南四湖的首要入湖污染物是TN,其次是CODcr和TP。给出了南四湖湖东区入湖河口NH3-N与TN的线性回归方程,受湖西与湖东地形地势、河流形态、水力停留时间以及水体中pH、SS、叶绿素a等多种因素的影响,湖西比湖东河流的硝化过程较完全,湖西区和湖东区入湖河口氨氮与总氮的平均比值分别为0.25和0.65。分析表明,重污染河流的汇水区域一般都在主要城镇和工矿区分布,CODcr和氮污染物主要来自于工业和城市生活等点污染源,磷污染物主要来自于部分工业行业。因此,加强南四湖流域的工业结构调整、重点企业截污和城市污水处理厂脱氮除磷等点源控制措施仍是重中之重。 展开更多
关键词 北调 南四湖 入湖河流 重污染筛选 质评价 水环境问题分析
原文传递
Qualitative and Environmental Aspects Study of Water Distributed in West Algeria: The Case of Sidi Bel Abbes City
2
作者 Habib Meliani Mohamed Benyahia Mohamed Ali Bouzidi 《Journal of Life Sciences》 2013年第9期1009-1018,共10页
Water comes from various different sources, such as lakes, rivers, streams, springs and boreholes. Depending on the quality of its source, water will almost certainly have to be treated to make it safe to drink. All w... Water comes from various different sources, such as lakes, rivers, streams, springs and boreholes. Depending on the quality of its source, water will almost certainly have to be treated to make it safe to drink. All water supplies for human consumption must be well stored, free from micro-organisms, parasites and any substances that endanger public health if found in sufficient numbers or concentrations, in the same time. In our continued effort for a better result in our study of qualitative aspects, by physicochemical and bacteriological analysis, the authors focus in two crucial questions: a) is the water quality of Sidi-bel-Abbes good or bad ,and well stored? b) is the people of Sidi-bel-Abbes are aware of the importance of water and knowledgeable about how to use this vital? This study is the first to use data from I real work based upon a developed method and a good investigation to know exactly if water of Sidi-Bel-Abbes is safely treated, well stored and consumed in resemble way. In first, the authors plotted the method in analysing the qualitative aspect of water using developed material for a precise result starting by the distribution connection (condition and management) and the verification of water tank storage and finishing by analyzing the all the aspect of water (physicochemical and bacteriological analysis). In second, the authors focus on the way that people of Sidi Bel Abbes used and consumption water by introducing a targeted method (questionnaires) which help us a lot to know precisely the way, time and the real quantity of water consumed daily. In final step of our study of qualitative aspects, by physico-chemical and bacteriological, and environmental analyses, investigation processed by PCA (principal component analysis) of the drinking water supplied to Sidi Bel Abbes city (Algeria north-west) concluded by an encouraging result, that despite the various constraints faced by the departments concerned, they ensure the supply of safe drinking water in households almost daily. 展开更多
关键词 Drinking water Sidi Bel Abb6s city qualitative and environmental aspects PCA
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部