检索结果-南通市图书馆

检索条件"主题词=batch settling"

共 1 条记录，以下是1-10 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

EFFECT OF MIXING INDUSTRIAL AND DOMESTIC WASTEWATER ON settling BEHAVIORS IN PRIMARY settling TANKS

EFFECT OF MIXING INDUSTRIAL AND DOMESTIC WASTEWATER ON SETTL...

引用

Sixteenth International Water Technology Conference

作者： Atta N.N. El Mokadem S. El Monayeri O.D. EL Gohary E.H. Dept.of Environmental Engineering Faculty of Engineering Zagazig University Dept.of Construction ＆ Building Engineering Faculty of Engineering The Arab Academy for Science ＆ Technology ＆ Marine Time Transportation

About 50 % of the industries in Egypt, on statistical analyses done for 37 industries in Egypt, violate the Egyptian environmental law and discharge their untreated effluents into public sewage network. This had lead to the obvious deterioration of the sewage network, pumping stations, settling tanks, the biological activity during treatment in WWTPs and threatening the aquatic life in streams and rivers. 10 th of Ramadan city is considered to be the largest industrial city in Egypt. In this city the industrial WW is mixed with domestic sewage at the existing treatment plant. Currently, the efficiency of TSS removal in primary settling tanks（PST, during 2010） ranged from 30% to 45% compared to international standards（50% to 70%, Metcalf ＆ Eddy, 2003）. Another case includes Abu Rawash WWTP, which receives domestic WW only, the efficiency of TSS removal in PST ranged from 50% to 65 %. There is a clear reduction in the removal efficiency of TSS in PST in case of 10 th of Ramadan city WWTP due to the mixing of industrial and domestic WW despite that the operational parameters（Retention time and Surface loading rate） coincide with those in the international standards. The reduction in the removal efficiency of primary treatment should affect the organic and solid loading rates on the subsequent treatment units. The present study aims to re-establishment the settling behaviors and operation of PST which receive raw and combined domestic and industrial wastewaters（with different mixing ratios）. This has been done using laboratory batch settling column tests. Results have been validated using computer modeling（GPS-X）. Experimental investigations of this study showed that, at a RT of（1.5-2.5 hr）, and a SLR of（30 – 50 m/d）, the removal efficiency of TSS ranged between 51 and 61% for Domestic WW, from 35 to 45% for Industrial WW, from 45 to 56% for mixed WW（25% industrial）, and from 40 to 50% for mixed WW（50% industrial）.

关键词： batch settling computer modeling domestic ww flocculent settling GPS-X industrial ww primary sedimentation tank TSS removal

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

全选清除本页清除全部题录导出标记到“检索档案”

共1页 << < 1 > >>

回到顶部

执行限定条件

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：