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生物-物化法处理造纸中段废水工程设计 总被引:2,自引:0,他引:2
造纸中段废水是难处理的高浓度废水之一,本文以实例说明采用生物-物化法工艺,经过严格的设计,调试和运行控制后,可以取得良好效果。保证整个污水处理系统的稳定达标。 相似文献
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处理重金属废水的传统方法在投资和运行费用上都较高,加之沉淀去除效果不太理想,近年来国内外进行了大量的生化法去除重金属的研究。本文介绍了生物吸附法、生物絮凝法、微生物代谢法和植物吸收法。生化法处理重金属废水,成本低,效益高,易管理,可回收重金属,有利于生态环境的改善,具有十分广阔的应用前号。 相似文献
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本文介绍了物化与生化处理相结合的造纸废水零排放技术及其工程应用实例,该技术适用于以废纸为原材料的制浆造纸厂废水(不含全脱墨废水)处理。造纸废水经过该技术处理后可完全回用,形成厂内的闭路循环,达到零排放的目的。 相似文献
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芦苇湿地处理造纸废水技术对黄河三角洲经济和环境的影响 总被引:1,自引:0,他引:1
芦苇湿地处理造纸废水,不仅可以节约宝贵的淡水资源,而且能改善土壤的质量,提高芦苇的产量,继而为造纸业提供丰富的原料,实现循环经济。实践证明,此技术能资源化利用造纸废水,实现造纸废水“零排放”,有利于恢复黄河三角洲退化的生态系统。 相似文献
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石灰法小造纸废水的治理,长期以来一直是人们所关注的问题。铜山县环保局依靠科技进步,结合本地实际,大胆实践,走出了一条石灰法小造纸废水治理新路。为了使这一技术得到推广,我们采取以目标责任制为龙头的形式,层层签订目标责任状,加快了全县小造纸废水治理步伐,不仅取得了显著的经济效益,同时也收到了较好的社会效益和环境效益。铜山县是一个农业大县,工业基础较薄弱。近年来,在改革开放的形势下,一批充分利用当地资源,投资少、技术要求不高、设备简便、上马快、见效快的乡村工业发展迅猛,石灰法小造纸便是其中一个行业。截… 相似文献
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雷兆武 《中国环境管理干部学院学报》2011,(5):60-62
由于造纸废水组分复杂、污染物浓度高、可生化性差,需要联合运用多种处理方法对其进行处理,实现废水的达标排放和降低废水处理成本。对于造纸过程,应推行清洁生产,通过源头削减和生产过程控制,减少原辅材料消耗,减少废水的产生量和排放量,降低废水中的污染物浓度,从而实现造纸废水的有效控制和处理。 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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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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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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