共查询到20条相似文献,搜索用时 78 毫秒
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根据废旧塑料综合利用生产废水的特点,采用隔渣+混凝沉淀+水解酸化+接触氧化的主体工艺,该工艺运行一段时间,处理效果稳定,BOD5的去除率大于95%,CODCr的去除率大于95%,出水水质达到污水综合排放一级标准。 相似文献
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物化-生化工艺处理皮革废水 总被引:13,自引:1,他引:12
采用混凝沉淀+气浮+缺氧+接触氧化法处理皮革废水,运行结果表明,在进水CODcr1500-4000mg/L,BOD5500-1000mg/L,SS1500-3000mg/L和Cr^3 30-70mg/L,S^2-40-60mg/L时,处理后出水水质可达到DB4426-89二级排放标准。该工艺简单,占地少,运行便利。 相似文献
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电镀综合废水由于水量大、水质复杂导致处理难度大、处理成本高的困难。在分析废水水质特点和传统处理工艺的基础上,采用Fenton-生物接触氧化工艺对电镀综合废水进行处理,运行结果表明,该联合工艺对污染物具有显著和高效的去除效果,出水COD≤80mg/L,Cu^2+≤0.5mgL,Ni^2+≤0.5mg/L,Cr^6+≤0.4,氰化物≤0.4mg/L,各项水质指标均优于《广东省水污染物排放限制》(DB44,26—2001)第二时段的一级标准。 相似文献
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为应对供水格局变化和水量增长,通过系统方案论证,提出拆除水厂内已停运的一期工程,新建15万m^3/d常规处理和30万m^3/d排泥水处理设施。结合一期工程拆除后的地形条件进行平面布置,降低工程投资。本期充分考虑远期深度处理系统,提前建设预臭氧接触池,滤池设置双层渠道和切换阀门,减少远期建设对水厂生产的影响。水厂建(构)筑物采用组合、叠合设计,节约用地,可供类似改扩建工程设计参考。 相似文献
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哲庄煤矿矿井属小型开发建设项目,建设项目的实施对周边环境产生一定影响,为了减少水土流失,采取了一系列措施,可有效防治项目区的水土流失,保护和改善生态环境,为防治项目区自然和工程水土流失提供了科学依据,同时更好地维护主体工程安全运行。 相似文献
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某化工回用水处理工程废水主要由循环水排污水和经生化处理系统处理后的气化灰水、冲渣水等废水组成,针对该废水特点,本工程采用两级曝气生物滤池法(DN型BAF+DC/N型BAF)+保安过滤器+膜处理技术等工艺对其进行处理。结果表明,该工程工艺运行效果良好,处理出水水质达到设计要求,可实现回用。工程总运行费用为1.967元/m^3。 相似文献
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结合天达公司水厂一期改造工程,对一种新型、高效过滤技术——DA863过滤技术(D型滤池)在虹吸滤池技改中的应用进行介绍。并对D型滤池在虹吸滤池技改中的相关工艺参数等方面进行说明。通过虹吸滤池技改项目的运行情况,证明DA863过滤技术(D型滤池)在虹吸滤池技改项目中的应用是可行、可靠的,并具有广阔的应用前景。 相似文献
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Total desalinated water costs to the Israeli Government, the “off-taker”, from the Ashkelon seawater desalination plant consist of the contracted water costs at the plant’s battery limits plus the government’s own expenditures: a) its initial investments (tender administration, out-of-plant infrastructure required to integrate the product within the national and regional water supply systems, etc.), b) its annual infrastructure O&M, supervisory and administrative costs, and c) the projected additional costs associated with certain project risks assumed by it throughout the life of the project. The paper presents and reviews these risks and quantifies the Government’s anticipated direct and indirect, fixed and variable costs, including several cost escalation scenarios anticipated due to the linkage of the contracted water price to various indices (using an item by item and index by index cost sensitivity analysis). The escalated desalinated water costs are then compared to the similarly anticipated but differently escalating costs of other water sources in Israel, to project, long-term, the resultant gap. The benefits foreseen from the project, and particularly those related to its specific site location, and its mandated daily, monthly and annual water supply schedules and product quality, are presented against: a) the background of Israel’s current water supply system’s water sources’ sustainable capacity, reliability, quality and costs, b) the anticipated growth in demand by various consumer sectors and c) the continuous deterioration of groundwater quality. The resulting risk and cost-benefit analyses are relevant not only to the Ashkelon project, which, as the first large scale government sponsored seawater desalination project in Israel, is a pioneering case study, but also to all pending and future seawater desalination projects in Israel. Some of these are not and will not be BOT, as the Ashkelon project was, but BOO and turnkey contracts, but, though government’s participation and the division of project risks may vary, the key cost-benefit issues, from the government’s point of view, will remain the same. In this context, Israel’s overall seawater desalination program, which is currently fixed at 315 million m3/y by 2010, and its role within the Israeli Water Commission’s long-range planning are briefly reviewed. 相似文献
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煤气化废水处理工程设计实例 总被引:2,自引:2,他引:0
针对煤化工废水水质复杂、难降解有机物浓度高、含有毒物质及水质、水量波动大等特点,设计采用匀质-隔油-厌氧-两级生化-絮凝沉淀-高级氧化-曝气生物滤池-V型滤池多级生化组合工艺对某项目煤化工废水进行单独处理,处理规模为360 m~3/h,介绍了该工艺处理流程及其设计特点,给出了主要构筑物的设计参数。工程运行结果表明,各项出水指标能够达到HG/T 3923—2007《循环冷却水用再生水水质标准》中再生水用作循环冷却水的水质要求(除TDS外)。 相似文献