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着重叙述了工业危险废弃物处置场功能的变化.由于国际上应用广泛且技术、管理成熟的地面处置场的安全性低,而地下处置场相对远离生物圈、密闭、安全性高、技术成熟(高放射性废弃物除外),因此提出了在当前情况下利用废弃矿井建设工业危险废弃物处置场的建议. 相似文献
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侯纪蓉 《精细与专用化学品》1999,(20)
由于我国染料及中间体行业近三十年来发展迅猛,而染料企业大多数是小型厂,染料品种繁多,在化工系统中,这一行业目前几乎是污染最严重、污染面最大、治理最差的。同时,一些发达国家把污染重、难治理的产品关停,转向发展中国家生产,染料中间体便是其中之一。所以我国大量的小型乡镇企业治理难度就更大了。不同染料生产原料、工艺过程不同,所排“三废”即有共同的特性,又有各自特点,因此需要针对各自的不同分别处理。本文从废气、有机废液和废渣、废水三方面详细叙述了工业上常用的治理方法及适用条件。并例举了几类排放量较大的废水的治理方法。 相似文献
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Chuck Z. Soderquist Edgar C. Buck John S. McCloy Mike J. Schweiger Albert A. Kruger 《Journal of the American Ceramic Society》2016,99(12):3924-3931
The distribution and physical form of technetium in a Hanford low‐activity waste (LAW) glass was examined with scanning electron microscopy (SEM) and X‐ray diffraction (XRD). A simulated Hanford LAW glass was spiked with varying amounts of potassium pertechnetate and melted at 1000°C. The glass was melted in a sealed quartz ampoule with the air pumped out, so that volatile material could leave the glass but would not be lost from the system. Previous studies have shown that technetium remains in the glass up to about 2000 ppm, but rises to the top of the melt as a separate salt phase above this concentration. Examination by SEM shows that crystals of technetium compounds appear to grow out of the hot glass, which implies that the hot glass was supersaturated in technetium salts. Some of the technetium compound crystals had apparently melted, but other crystals had obviously not melted and must have formed after the glass had partially cooled. The technetium compounds in the salt layer are KTcO4 and NaTcO4, according to SEM and XRD. No TcO2 was found in the salt phase, even though Tc(IV) has been previously reported in the glass. 相似文献
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染料废水处理方法的研究进展 总被引:15,自引:0,他引:15
综述了含染料废水处理方法的现状和进展 ,尤其是在化学法、生化法以及物理化学法中的新技术 ,其中包括膜、超声波、等离子体、超临界水氧化法 (SCWO)、光催化氧化法、电化学氧化法等方法的研究现状 ,并对各种方法和技术进行了评价和分析 相似文献
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介绍了针对合成氨、尿素装置进行的造气污水治理、节水减排改造、废油回收改造和废气回收再利用综合治理;对改造效果进行了综合评价,结果表明,改造后排放废水水质保持在COD≤60 mg/L,w(NH3-N)≤5 mg/L,废油回收100 t/a,吨尿素氨耗降低到586 kg/t。 相似文献
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Mesophilic and Thermophilic Anaerobic Digestion of Model Kitchen Waste with Variation of Fat Content
Anaerobic digestion of model kitchen waste (MKW) produced on basis of real kitchen waste (KW) is studied in batch tests. The impact of fat content of three MKWs (14.7 %, 23 %, and 27.2 % rapeseed oil content) on the biogas production at mesophilic and thermophilic conditions and two loadings is examined. The loading of 5 gVSL−1 leads to fast degradation under both temperature modes and the volume of biogas produced is only weakly correlated to the oil content. For the loading of 25 gVSL−1 a strong retardation of biogas production, high concentration of volatile fatty acids and no correlation of oil content is observed. 相似文献
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城市生活垃圾填埋场的选址涉及到自然地质地貌、水文地质、生态、社会、经济、法律、交通运输、环境保护等各方面因素,是一项十分复杂而重要的工作。分析了垃圾填埋场选址中存在的问题。 相似文献
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以废弃混凝土为主要原料,添加部分矿渣、钢渣及脱硫石膏,即可直接粉磨生产免煅烧再生水泥。该水泥中废弃混凝土的掺量可达40%~50%,3d抗压强度大于10MPa,28d抗压强度可达20~40MPa。XRD和SEM分析表明,废弃混凝土再生水泥的水化产物主要是钙矾石和C-S-H凝胶,有部分废弃混凝土参与了水化反应,其余部分被水化产物所包裹,起骨架作用。 相似文献
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工业废气污染治理技术综述 总被引:1,自引:0,他引:1
很多工业企业在生产活动过程中都会产生废气污染,工业废气的类型繁多,随着环保产业的发展,同一类型的废气有着多种治理技术,本文主要综述了工业废气中的挥发性有机废气、粉尘废气和燃料废气的治理技术。 相似文献