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对广元市污水处理厂在2013~2015年监测数据进行分析,探索了该市城镇污水处理厂尾水水质的特征。结果表明:(1) 2013~2015年各污水处理厂的pH值和TP浓度变化不大,均能达标,尾水大多呈弱碱性。2013年市区大一污水处理厂的尾水排放整体优于其他污水处理厂,2014年最好的是青川县污水处理厂,2015年是剑阁县城污水处理厂。(2) 2013年的8项指标均达到排放标准,2013~2015年的pH、COD、TSS、BOD、总磷5项指标均达到排放标准。COD处理效率在2013~2015年分别为84. 56%、91. 33%、84. 38%;氨氮的处理效率在分别为82. 31%、80. 70%、77. 40%。(3)不同的工艺对处理效率有影响,改良型A_2/O工艺对于COD处理效率比其他工艺更好,而曝气生物滤池(BAF)工艺处理COD和氨氮相比于其他工艺更优。根据各地区的实际情况,建议强化居民安全用水意识,相关单位保证污水处理厂的达标排放。 相似文献
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山海关区新民居污水治理工程采用水解酸化+接触氧化+曝气生物滤池为主的工艺进行污水治理,实际运行结果表明:系统运行稳定,处理出水COD≤48 mg.L-1,BOD5≤9 mg.L-1,SS≤10 mg.L-1,NH3-N≤4.5 mg.L-1,TP≤0.47 mg.L-1,处理出水达到《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准,出水用于农村绿化和农灌,经济效益和环境效益明显。 相似文献
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郑州市某小型污水处理厂设计污水处理规模为3×104m3/d,出水经枯河排放至黄河,2022年9月1日前,该污水处理厂出水水质执行GB 18918—2002《城镇污水处理厂污染物排放标准》一级A标准。根据DB 41/2087—2021《河南省黄河流域水污染物排放标准》要求,该污水处理厂于2022年9月1日起出水水质执行黄河流域一级标准,为此,该污水处理厂进行了提标改造。介绍了提标改造前后污水处理工艺流程,提标改造工程分为新建工程和改建工程,新建工程主要有厌氧池、V型滤池、接触消毒池、变配电室等,改建工程主要对鼓风机房、加药间、反应沉淀池、转盘滤池、生物池等进行不停产改造。提标改造后,出水水质达到黄河流域一级标准,可大大提高该区域的水生态环境质量。 相似文献
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厌氧+移动接触氧化法处理油田污水的中试 总被引:1,自引:1,他引:0
Y油田采用"核桃壳过滤+传统活性污泥法"处理油田污水,处理后污水COD、BOD5浓度分别为110.23,38.65mg/L,不能达到GB 18918—2002《城镇污水处理厂污染物排放标准》一级标准,需升级改进处理方法。在油田现场应用"物理过滤+厌氧水解酸化+接触氧化+活性炭吸附"的处理方法,开展了油田污水深度处理中试研究,对现场中试数据进行了分析,结果表明:应用该方法处理的油田污水COD、BOD5等指标能够达到GB 18918—2002《城镇污水处理厂污染物排放标准》一级标准,其中COD、BOD5浓度分别为26.87~37.55mg/L,6.34~7.61mg/L。 相似文献
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曝气生物滤池在石化污水处理工程中的应用 总被引:1,自引:0,他引:1
曝气生物滤池可以用于石化污水的二段生化处理,是一种运行可靠、自动化程度高、出水水质好和抗冲击能力强的好氧生物处理新工艺。它与活性污泥法工艺相比,对于低基质污水二段生化工况,其有机物容积负荷高,污水停留时间短,其后不须设置二次沉淀池。与普通生物滤池相比,其占地面积小,不宜堵塞。与生物接触氧化方法相比,生物活性较高,处理效果好。曝气生物滤池集曝气池、二次沉淀池和滤池的功能于一身,其出水水质指标可以完全达到《污水综合排放标准》(GB8978-1996)一级标准。 相似文献
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某小型城镇污水处理厂一期工程设计规模为1.0×104m3/d,设计出水水质执行《城镇污水处理厂污染物排放标准》(GB 18918-2002)的一级A标准.设计采用多模式AAO+混合絮凝+活性砂过滤工艺,尾水采用紫外线消毒.运行结果显示系统处理效果稳定,在低碳氮比进水条件下脱氮除磷效果良好.工程总投资为4900万元,直接... 相似文献
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Trametes versicolor decolorized 2000 mg L(-1) of the mono-azo substituted naphthalenic dye Amaranth with no dye sorption observed visually. The changes in the toxicity were assessed over a period of 30 d for the dye-treated viable culture, control (no dye added), and a boiled culture treated with dye, using the Microtox Acute Toxicity assay. Before dye addition, the culture filtrate had some toxicity, which increased after the dye addition. The toxicity of the dye-treated culture decreased during the treatment. The loss of toxicity occurred at the same time, with the loss of color suggesting that detoxification is associated with decoloration. The change in pH was due to natural metabolic processes and had a small effect on detoxification. Because the toxicity of the treatment was similar to that of the control at the end of the treatment, the effluent seems to be safe for release into the environment, potentially rendering this treatment suitable for industrial application. 相似文献
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泵站树状给水管网流量具有随机性,而这种随机性变化会直接影响管网的建设费用和动力费用.针对这-特点,应用随机规划原理,建立泵站树状给水管网机会约束模型,编写基于随机模拟的遗传算法程序求解该模型.机会约束模型能较客观地反映该管网的实际工况,使优化设计结果更符合实际. 相似文献
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城镇化是推动我国经济社会发展的重要动力,在高速发展的同时,带来大量污染排放,威胁乡村环境质量与可持续发展。在对乡村生态环境问题剖析的基础上,从战略、实施、方式等层面探索解决思路,围绕科学规划、发展方式、基础建设、管理机制、宣传教育等方面分析关键点,加强乡村环境保护,保障城镇化建设健康发展,为促进农村农业持续发展提供持久动力。 相似文献
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Günay Kocasoy 《Environmental management》1989,13(4):469-475
The increase in the number of tourists visiting a coast is desired by most of the countries for economic reasons. However, this increase in tourism may cause pollution of the sea. This can be only avoided by proper planning and by predicting the carrying capacity of the coast in terms of sea pollution. This is especially important for developing countries where part of the wastewater is discharged without any treatment into the sea.In the present study the beaches were classified according to their use — and consequently the amount of waste discharged into the sea — into four groups: (1) coasts that are used only for swimming and recreational purposes; (2) coasts used simultaneously for dwelling, swimming, and recreational purposes; (3) coasts along which only dwellings exist; and (4) natural and man-made harbors, i.e., coasts used as shelters. During the survey,40,320 observations were made between December 1985 and February 1988 to determine the effect of the number of tourists on seawater quality. The results obtained were analyzed by a multilinear regression program to obtain an empirical equation giving the extent of the sea pollution in terms of coliform concentration as a function of population density and some other environmental factors.The equations derived in this study enable the determination of the carrying capacity of a beach in terms of pollution as well as the expected degree of pollution corresponding to a given population density. Furthermore, it allows the prediction of the extra carrying capacity that can be obtained by improving the waste-disposal conditions. 相似文献
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阐释了信息产业专门化街区的内涵,结合对合肥市黄山路信息产业专门化街区构成要素的分类及其邻近度的分析,分别从空间结构演化、景观演化、功能演化三方面阐述了合肥市黄山路由"电子一条街"向"信息产业专门化街区"的总体演化阶段,探讨了信息产业专门化街区的未来发展趋势。 相似文献
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