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玉米淀粉生产废水资源化及处理技术研究 总被引:3,自引:0,他引:3
以玉米为原料生产淀粉时,会产生大量含高浓度的有机化合物及悬浮物的废水。综述了玉米淀粉废水的来源、水质特性、处理工艺等,介绍了一些玉米淀粉废水资源化的方法。 相似文献
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木薯淀粉行业循环经济模式的探讨 总被引:4,自引:0,他引:4
木薯淀粉生产会产生大量的高浓度有机废水和木薯渣,直接排放会对环境造成极大的污染。本文以广西木薯淀粉为例,通过对木薯淀粉废水和木薯渣可资源化分析,找出一条适合其发展的循环经济模式,从而达到降低能耗、减少污染排放,并提高经济效益的目的,为今后的木薯淀粉废水和木薯渣的治理及资源化利用提供参考。 相似文献
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随着工业化进程的推进,高浓度有机废水的产生量与日俱增,环境威胁日益严重。因此,如何有效处理高浓度有机废水已成为一个重要的科学问题。膜分离技术以其分离效率高、能耗低、无相变、应用范围广等优势,受到了广泛关注和应用。为此,利用Citespace对相关文章进行可视化分析,综述了膜生物反应器、超滤、纳滤、反渗透、膜组合工艺以及改性膜材料在高浓度有机废水处理中的研究进展。同时,分析了高浓度有机废水及污泥处理过程中的资源化现状。最后,总结了膜分离技术用于高浓度有机废水处理的难点和存在问题,在此基础上,对如何加强污水资源化管理和优化废水排放技术进行了展望。 相似文献
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在马铃薯淀粉加工过程中产生大量的高浓度酸性有机废水,直接排放会对环境造成严重影响,因此对马铃薯淀粉加工产生的废水的处理越来越受到广泛的关注。本文主要论述了马铃薯淀粉废水的特点及目前比较成熟的淀粉废水处理工艺,并对各工艺的优缺点进行了比较。 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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我厂3号回转窑(Φ4m×60m)生产线在1996年年底由SP窑(产量912t/d)改为NSP窑(产量1320t/d),预分解系统为四级旋风预热器带离线式分解炉 相似文献
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Conclusions It is significant that the purification on a single passage of viscose through porous ceramic corresponds to the result of a two-stage filtration of it in industrial filter-presses with standard fillings.Kiev Combine. Kiev Technological Institute of Light Industry. Translated from Khimicheskie Volokna, No. 3, pp. 20–22, May–June, 1969. 相似文献
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The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003 相似文献
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A refined nonlinear value of the main parameter of a material, i.e., the elongation modulus versus the instant temperature value, was suggested for introduction into the computational algorithm of tempering stresses. 相似文献