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物化组合工艺处理提铜选矿药剂厂废水的研究 总被引:1,自引:0,他引:1
对提铜选矿药剂生产废水净化处理,首先,采用武平膨润土、连城膨润土、细煤粉、粉煤灰、炉渣和颗粒活性炭等6种吸附剂,考察在酸性、中性和碱性条件下对废水脱色、除味效果和CODCr去除率的影响。其次,考察微电解—催化氧化联合预处理对6种吸附剂两级吸附净化效果的影响。第三,将微电解、催化氧化、活性炭吸附、石灰中和等物化处理单元进行组合,考察不同顺序组合工艺对净化效果的影响。结果表明:(1)除活性炭外,增加吸附级数或采用微电解—催化氧化联合预处理,对总体净化效果的提高不明显。(2)采用如下组合工艺:催化氧化→活性炭吸附→微电解→石灰中和,具有较好的净化效果,出水无色、无味、CODCr去除率达到95.69%、可生化性明显改善。 相似文献
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文章在分析高浓度含氮废水水质特征的基础上,着重介绍了近年来国内外该类废水处理过程中常用的各种物化法、生物法,同时进行了分析比较,提出了目前在高浓度含氮废水处理中存在的主要问题。 相似文献
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合成氨废水处理工艺设计 总被引:1,自引:0,他引:1
某地合成氨公司采用CASS+MBBR工艺处理厂区综合污水,当进水BOD_5、COD_(Cr)、NH_3-N、SS质量浓度分别为300、600、500、300mg/L时,设计出水BOD_5、COD_(Cr)、NH_3-N平均质量浓度分别为10、60、10mg/L,浊度为5NTU,达到《污水再生利用工程设计规范》中规定的循环冷却系统补充水水质标准。当生产不正常,水质情况恶化时,要求处理后水质达到《合成氨工业水污染物排放标准》(GB 13458-2001)要求后外排,不会对环境造成严重污染。 相似文献
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A new method for optimising process networks is presented in this paper. The method uses economic analysis of existing systems based on the new value analysis method (Ph.D. Dissertation, UMIST, Manchester, UK, 2002) as the basis to derive the optimum network design. The analytical optimisation method comprises of three steps. Market integration is the first step that fully exploits the available market opportunities for selling and purchasing streams based on individual marginal contributions from productions and processing of streams. Market integration is an easy and straightforward way of achieving quick benefits. The second step deals with optimisation of network flowsheet/connections. The economic margins of various paths of network are used to determine the weaker paths and the stronger paths where the loads of weaker paths can be shifted. This load shifting among paths leads up to the overall benefits of a system. Finally, the non-profitable or less profitable process units are optimised to improve their individual marginal contributions. Analytical optimisation turns the traditional back box approach into a clear and transparent procedure and is simple to understand and easy to use. The application of analytical optimisation is demonstrated with industrial cases from refining. In the end, a generalised methodology has been illustrated on how to design the optimum flowsheet of a petrochemical complex in a changing market price scenario. 相似文献
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工业废水种类繁多,并且大部分工业废水的水质特性与城镇污水之间存在较大差别,适用于城镇污水处理设计的参数和计算公式不一定适用于工业废水。对我国现行废水处理设计规范中活性污泥法的主要设计参数进行了汇总,分析了这些规范中存在的一些不足之处,包括以BOD5表征有机物含量的合理性,以泥龄法计算生化池容积和剩余污泥量的局限性,以及A/O法缺氧池(区)容积规定存在的误区等,并对工业废水处理的设计提出了建议。 相似文献
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再造烟叶生产废水处理研究 总被引:7,自引:0,他引:7
以再造烟叶(造纸法)生产废水为研究对象,对生产中两种主要工艺废水及生产综合废水进行了多项水质分析.研究结果表明,生产线中提取浓缩段与抄造成型段排放的工艺废水具有不同的水质特性,而生产综合废水则表现为一种弱酸性、中高浓度有机废水特性,可生化性较好.根据废水的上述特性,设计了一种"混凝-生化-脱色"的三级废水处理工艺并应用于2 000t/a再造烟叶生产试验基地的废水处理中,工程实施运行后效果良好,吨水处理成本低,治理后的废水排放可达到国家《污水综合排放标准》GB 8978-1996一级标准,该工艺具有推广应用于治理规模化再造烟叶生产废水或其他烟草类似废水的良好前景. 相似文献
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难降解高含盐化工污水处理技术研究 总被引:2,自引:0,他引:2
探讨了物理法、电化学法、生物法处理高盐化工污水的效果及问题。水解酸化处理方法是一种介于好氧和厌氧处理法之间的方法,本文重点论述了水解酸化工艺处理难降解高盐化工污水的国内外现状及发展趋势、工艺方式的类型及研究现状。指出水解酸化工艺与其它工艺组合可以降低处理成本,提高处理效率,认为其将是今后化工污水治理的重要生物预处理方法。 相似文献
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Stijn WH Van Hulle Peter A Vanrolleghem 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2004,79(10):1084-1091
Industrial wastewater treatment plants (WWTPs) have to provide 100% reliability and availability for the discharging facilities at an industrial site. Varying production schedules at these facilities and specific components occurring in the industrial wastewater considerably hinder the optimisation of industrial WWTPs. In this context it is shown in this paper that model‐based optimisation is an efficient and cost‐reducing way to ensure that an industrial WWTP functions well. The aim of the study presented was two‐fold. The first step was to show the usefulness of a proposed procedure to build and calibrate a model for the industrial WWTP. The second objective was to use the model for optimisation of the WWTP. As an example, a large set of possible production schedules in the different discharging facilities was simulated. Based on these simulations it could be predicted which schedules allow the effluent standards to be met and which do not. The calibrated and validated model was also used to investigate different operating strategies such as the in‐series operation of the two available aeration tanks. In fact, with the model it was shown that a 20% reduction of the degradable COD concentration in the effluent could be achieved by operating the tanks in series instead of in parallel. This case study shows how the approach presented can lead to fast and cost effective modelling and optimisation of an industrial WWTP. Copyright © 2004 Society of Chemical Industry 相似文献
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Successful wastewater disinfection was achieved under stringent bacteriological standards with a 480 g/hr generator pilot facility. Optimization of the facility required an applied dose of 30 mg/1 (13 to 19 W–hr/g ozone produced) to obtain a 2.2 total coliform per 100 ml disinfection level of nitrified effluent. An applied dose of 20 mg/1 (18 W–hr/g) is optimal for a 70 total coliform per 100 ml disinfection level of secondary effluent. The approach to ozonation system optimization, including generator mapping and contactor evaluation, is presented. 相似文献
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铁氧体法处理高浓度化学镀镍废水的研究 总被引:1,自引:0,他引:1
采用铁氧体法对青岛某电子厂产生的高浓度化学镀镍废水进行了预处理研究.通过正交实验考察了pH、m(FeSO4·7H2O):m(Ni2+)、n(Fe2+)∶n(Fe3+)、反应温度和搅拌时间对废水中Ni2+去除率的影响.单因素优化实验结果表明∶当pH为10.50左右,m(FeSO4·7H2O)∶m (Ni2+)=21,n ... 相似文献
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乳制品工业废水处理技术进展 总被引:1,自引:0,他引:1
乳制品工业生产废水由于含有大量的高溶解性的有机物如乳蛋白、乳糖、乳脂等物质,因此化学需氧量COD非常高,同时很容易被微生物分解,属于可生化性较好的废水。国内外专家针对废水特点大多采用生物处理方法,也有采用生物和物理化学结合的方法。该文分析了乳制品工业废水的来源及水质特点,综述了物理化学法、生物法等在乳制品工业废水处理中的应用,也介绍了乳制品工业废水资源化的途径。 相似文献
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化妆品企业排放的生产废水成分复杂、表面活性剂浓度较高且有一定毒性,针对该类高浓度有机废水,采用气浮—水解酸化—好氧组合工艺进行处理,工程实践表明:当进水COD为9 000 mg/L左右、系统维持相对稳定的情况下,出水水质达到《污水综合排放标准》(GB 8978—1996)的一级标准要求。 相似文献