共查询到19条相似文献,搜索用时 109 毫秒
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城市中水系统组成及效益分析 总被引:2,自引:0,他引:2
作者阐述了当前城市中水系统的组成及应用现状,并对济南市舜耕小区中水系统的处理流程、经济效益等方面进行分析探讨,提出目前制约城市中水系统发展的主要问题,并为中水回用的顺利实施提供参考。 相似文献
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针对吐哈石油勘探开发指挥部石油天然气化工厂顺酐装置目前的排污现状,以传统的中水回用技术为指导,提出了前端减排与末端治理相结合的废水处理方案,可实现每小时节水33.6m3,大大减少了水资源的消耗量及废水排放量,年收益164万元,经济效益和环境效益显著。 相似文献
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为实现外排污水水质由GB 8978—1996《污水综合排放标准》二级标准提高到一级,并对其进行除盐处理,满足Q/SH 0104—2007《炼化企业节水减排考核指标与回用水质控制指标》要求,用于循环水的补充水。南阳能源化工有限公司在现有污水处理工艺的基础上,对污水提标技术进行研究,筛选出适合企业自身实际的处理工艺:对碱渣废水预处理单元,增设臭氧催化氧化单元,提高COD_(Cr)去除率;对混合污水处理单元,采用曝气调节水解酸化+A/O生物处理工艺,降低COD_(Cr)和氨氮;对回用循环水处理单元,采用多介质过滤器+电渗析处理工艺,降低含盐量。通过污水回用于循环水系统,节水减排,实现了废水资源化利用。 相似文献
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中水回用是提高生活用水重复利用率的主要形式。提高水的重复利用率,是实现城市污水资源化是解决水资源短缺的根本途径。人工湿地既具有景观价值,又有污水处理功能。可以为市政绿化、农田灌溉景观提供水资源。经人工湿地处理的中水水质,出水水质符合我国的城市杂用水水质标准(GB/T18920-2002)、景观环境用水水质标准(GB/T18920-2002)和农田灌溉水质标准(GB5084-2005)。 相似文献
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Jack E. McKee 《Journal of the American Water Resources Association》1971,7(4):740-749
ABSTRACT There are several possible ways in which wastewater from municipalities may be reclaimed and reused so as to minimize the need for imported water in North Central Texas. The rationale for reuse is enhanced by the fact that new water quality requirements in the Trinity River system will necessitate a very high degree of treatment at municipal sewage plants, just for discharge to surface streams. The largest potential market for municipal effluent is the steam-electric power industry. Within the next decade the generating capacity for electric power in North Central Texas will have to be more than doubled to meet increasing demand. Adequate supplies of condenser cooling water for such expansion will be difficult to obtain and assure. New large power stations might advantageously be located adjacent to municipal wastewater treatment plants, to utilize effluent as make-up water for cooling towers. Experience elsewhere has shown that well-treated wastewater can be used for cooling tower make-up with a minimum of trouble, with a considerable saving in overall cost, and with conservation of pristine water for other uses. 相似文献
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在采油清洁生产审核中发现,对生产过程的物质消耗和废物排放难以准确地进行分析和测试。针对这一问题,提出了水平衡分析法。对水平衡及其生产过程进行了评估,分析了清水损耗和废水产生的原因和环节,探讨了节约水资源、提高污水回用率的途径和方法,并提出了改进的目标和对策,形成了清洁生产审核方案。清水、污水平衡分析方法简单可靠,易于实施,同时可以为能量平衡、污染因子平衡的建立和分析提供借鉴和参考。 相似文献
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张红梅 《中国环境管理干部学院学报》2007,17(2):31-33
选择合理的供水系统对供水节能可产生十分重要的作用,而水厂规划设计生产中注意提高泵房的综合效率,减少水厂中的能量消耗,关注输水管路设计的技术经济比较问题是供水节能的关键所在。 相似文献
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Uta Krogmann Clinton J. Andrews Mookhan Kim Gregory Kiss Clare Miflin 《Journal of the American Water Resources Association》2007,43(6):1414-1423
Abstract: Building water mass balances were performed for one 150‐story conventional building scenario for comparison with three scenarios of the 2020 Tower, a hypothetical 150‐story high‐rise building with on‐site wastewater treatment and reuse. To ensure that the assumptions for the hypothetical building are appropriate, a one‐year water balance was also conducted of the existing 27‐story Solaire building that partly closes the water/wastewater loop, meters major water flows and implements low‐flow/water conserving fixtures and appliances. For comparison, a conventional 27‐story building scenario with the same low‐flow/water conserving fixtures as the Solaire but no water reuse was also assessed. The mean daily indoor water use in the Solaire was 246 l/(d cap) which exceeds mean daily water use found in the literature. The water mass balances showed that an urban high‐rise building needs another source of water even when potable reuse water is produced because of losses during water end use and treatment (i.e., evaporation, water in treatment residues). Therefore, water conservation (i.e., modification of human behavior) and water efficiency improvements (i.e., equipment, appliances and fixtures) are important major factors in reducing the municipal water needed in all scenarios. 相似文献