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剩余活性污泥制复合肥 总被引:2,自引:0,他引:2
石油化工污水处理过程中产生的剩余活性污泥处理是环保工作中的一大难题 ,通过对污泥成分、肥效的分析及对活性污泥制肥的工艺简介 ,阐明了剩余活性污泥制复合肥技术的可行性和广阔前景 相似文献
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污泥的资源化处理和处置是我国在经济发展中面对的亟待解决的难题。本文介绍了污泥制合成燃料的技术特点与近年来的发展,利用城市污水处理厂浓缩污泥(含水率约80%),用加入各种类型的添加剂改善燃烧条件,降低污泥水分,提升固化效果,达到利用污泥制合成燃料,实现污泥处理能源化。 相似文献
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综合利用污泥制砖,能够很好地解决污泥处置问题,对污泥的减量化、无害化及资源化具有重要意义,是可持续发展的必然趋势。通过文献计量的研究方法,以Web of Science核心合集数据库为基础,检索1900—2021年污泥制砖研究的相关文献,采用VOSviewer计量分析软件进行发文量、高被引论文、合作关系及共词聚类分析,阐述了污泥制砖的研究现状、进展及其热点主题。结果表明,该领域在全球范围内受到广泛关注,自2015年起发文量呈指数式增长,2015—2021年间的发文量约占研究期内总量的61.4%。相关研究多刊载在Construction and Building Materials,Journal of Cleaner Production及Waste Management等高水平期刊上,具备较高的学术影响力。该领域的相关研究多集中在剩余污泥的管理及再利用方式,重点关注了掺杂材料对污泥砖体结构性能的影响及制砖过程中产生重金属污染等问题的处理。各研究主题之间联系十分密切,具备较强的关联性和互补性。 相似文献
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以城市污泥为部分原料,页岩、黏土等作为掺料,进行了污泥制园林景观砖的实验研究,探讨了烧结时间和污泥掺量等条件对污泥黏土砖质量减少分数、烧成密度等性能的影响.实验结果表明,当污泥总量占总体质量的5%,烧结温度在1000℃左右,煅烧过程持续6 h左右时,制作的砖体质量轻,砖体密度相对较低,抗压强度相对最大,而且污泥和黏土的... 相似文献
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污泥处理处置业是环保产业的一个重要组成部分。文章阐述了广东省污泥处理处置业的发展现状及主要进展,分析了该行业发展的制约因素和污泥处理处置各主要技术应用的优缺点,提出了促进该行业发展的对策建议。 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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燃煤二氧化硫控制技术应用概况 总被引:1,自引:0,他引:1
由燃煤引起的二氧化硫污染已成为大气环境中最主要的污染因子。为解决这个问题,我国结合国外的技术成果,进行了各种脱硫技术的研究。介绍了各种治理技术应用情况,并结合实际经验对其中应注意的问题给予评述。 相似文献