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厌氧过滤器技术在PTA废水中的运用 总被引:2,自引:0,他引:2
通过厌氧过滤器技术在仪化PTA污水处理场的应用,对其处理效果、特点、启动、影响因素进行了分析、论述。 相似文献
93.
蔗糖厂水污染分析、治理技术及应用浅谈 总被引:1,自引:0,他引:1
蔗糖厂生产废水污染较大需治理的是酒精废醪液、洗滤布水和水膜除尘废水。云南省内已有多种治理蔗糖厂生产废水的技术报导。本文介绍了将上述三股废水治理后蔗糖厂总排达标的实例。 相似文献
94.
上流式厌氧污泥床滤器处理啤酒废水的实验研究表明 :当试验平均温度为 2 5°C时 ,厌氧工艺出水CODcr在 2 0 0 mg/ L左右 ,经混凝沉淀处理后出水 CODcr小于 60 mg/ L;当试验平均温度为 1 5°C时 ,厌氧工艺出水CODcr在 3 0 0 mg/ L左右 ,经混凝沉淀处理后出水 CODcr小于 1 0 0 mg/ L。采用混凝后处理还可同时减少浊度和臭味。 相似文献
95.
通过对黑龙江垦区稻米加工副产品稻壳7种综合利用方式和米糠4种深度开发方式的介绍,结合垦区稻米加工产业对上述两种副产品的利用现状,从资源有效利用和保护环境的角度阐述了此项工作在黑龙江垦区的重要性及良好发展前景. 相似文献
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Aly M. A. Abd‐Allah 《毒物与环境化学》2013,95(3-4):129-135
Sequential analysis is an extremely powerful technique for complex samples analysis. For determination of petroleum and chlorinated hydrocarbons, the same sample is divided into two parts. One part is utilized to extract the petroleum hydrocarbons and the second part is used to extract the organochlorine compounds because petroleum hydrocarbons usually appear in higher concentrations and interfering with organochlorine compounds. This analysis method required more solvent, time, and more sample volume. The analytical strategy, in this paper, involves the use of effective and efficient but simple techniques for petroleum hydrocarbons and chlorinated hydrocarbons separation. A clean‐up procedure is presented, by which these compounds are isolated from aliphatic as well as polyaromatic hydrocarbons through a combination of HPLC and adsorption chromatography on a florisil microcolumn. Mass spectrometric identification was used as confirmation method. GLC equipped with ECD and FID for organochlorine and petroleum compounds analysis, respectively. 相似文献
98.
《Journal of Manufacturing Processes》2014,16(4):435-450
This paper describes the characteristics and the cutting parameters performance of spindle speeds (n, rpm) and feed-rates (f, mm/s) during three interval ranges of machining times (t, minutes) with respect to the surface roughness and burr formation, by using a miniaturized micro-milling machine. Flat end-mill tools that have two-flutes, made of solid carbide with Mega-T coated, with 0.2 mm in diameter were used to cut Aluminum Alloy AA1100. The causal relationship among spindle speeds, feed-rates, and machining times toward the surface roughness was analyzed using a statistical method ANOVA. It is found that the feed-rate (f) and machining time (t) contribute significantly to the surface roughness. Lower feed-rate would produce better surface roughness. However, when machining time is transformed into total cut length, it is known that a higher feed-rate, that consequently giving more productive machining since produce more cut length, would not degrade surface quality and tool life significantly. Burr occurrence on machined work pieces was analyzed using SEM. The average sizes of top burr for each cutting parameter selection were analyzed to find the relation between the cutting parameters and burr formation. In this research, bottom burr was found. It is formed in a longer machining time compare the formation of top burr, entrance burr and exit burr. Burr formation is significantly affected by the tool condition, which is degrading during the machining process. This knowledge of appropriate cutting parameter selection and actual tool condition would be an important consideration when planning a micro-milling process to produce a product with minimum burr. 相似文献
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