• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Symposium on Water Supply and Sanitation for All; 20070927-28; Berching(DE) >Water and Wastewater Treatment Alternatives and Quality Standards Towards a Comprehensive Reuse Policy
【24h】

Water and Wastewater Treatment Alternatives and Quality Standards Towards a Comprehensive Reuse Policy

机译：制定综合回用政策的水和废水处理替代方案和质量标准

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Israel is a water-scarce country situated in a sensitive hydrological area. This has mandated a careful water resources management that integrates water resource augmentation and pollution control. Desalination of seawater and brackish groundwater, together with reclamation and reuse of municipal wastewater, has become a vital component of this concept. It is planned that by 2020, practically all municipal wastewater will be reused, mainly for agricultural irrigation. Recent legislation requires stringent quality standards for treated wastewater destined for agricultural irrigation or for disposal in rivers. These include the need to upgrade secondary processes for nitrogen and phosphorus removal and to add tertiary filtration to enable more effective disinfection. Other water quality problems related to the presence of emerging trace substances, such as endocrine disrupting compounds (EDCs), may require a quaternary treatment stage that combines activated carbon adsorption, advanced oxidation, and desalination. The need for effluent desalination may also be required, due to salination of soil and groundwater caused by long-term irrigation with reclaimed wastewater. Since by 2020, almost 30% of Israel's fresh water supplies will consist of desalinated water, it will change considerably the composition of the water in use in general and consequently, that of the resulting wastewater. Effluent salinity will indeed be reduced, but other problems, related to the decrease of essential nutrients (required for human health, water conditioning, wastewater treatment, and irrigated plants), may arise.
机译：以色列是一个缺水的国家，位于一个敏感的水文地区。这要求进行仔细的水资源管理，将水资源增加和污染控制相结合。海水和咸淡水的脱盐以及城市污水的再生和再利用已成为这一概念的重要组成部分。计划到2020年，几乎所有市政废水都将被再利用，主要用于农业灌溉。最近的立法要求对用于农业灌溉或河流处理的处理后的废水制定严格的质量标准。其中包括需要升级用于脱氮和除磷的二级工艺，并增加第三级过滤以实现更有效的消毒。与新兴的微量物质（例如内分泌干扰化合物（EDC））的存在有关的其他水质问题可能需要结合活性炭吸附，高级氧化和脱盐的四级处理阶段。由于长期用再生废水灌溉导致土壤和地下水盐化，因此也可能需要废水脱盐。自2020年以来，以色列将有近30％的淡水供应由淡化水组成，这将大大改变总体上使用的水的成分，从而改变由此产生的废水的成分。废水中的盐分确实会降低，但是可能会出现其他与必需营养素减少有关的问题（对人体健康，水调节，废水处理和灌溉植物是必需的）。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号