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结合佛山市某印染企业,设计规模2500m3/d,通过采用“热交换器+消毒杀菌+多介质过滤罐+超滤+反渗透”双膜法处理工艺进行深度处理印染废水,进行再生废水的回用。按照生产用水要求,产水回用于生产工艺段;减少污水排放,提高企业中水回用比例,节约水资源;实现了节水、减排、增效的环保意。介绍双膜法工艺在印染废水中的应用流程和运行情况,指出在运行过程中存在的问题,给同类工程提供设计和经验。 相似文献
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通过回用印染废水,能够使相关企业实现节能减排与污染的总量控制。本文着重分析了印染废水的回用现状,深入研究印染废水的深度处理与回用技术,以降低废水污染,实现环境保护的目标。 相似文献
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中水回用是解决城市水资源短缺的一种有效途径,本文分析了义乌市实现中水回用的必要性,对义乌市中水回用的水量、用途以及保障政策进行了研究。本研究对义乌市实现生态城市建设目标具有深远的现实意义和战略意义,同时对于国内同类型城市的中水回用规划具有借鉴意义。 相似文献
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不同方法深度处理印染废水的比较研究 总被引:1,自引:0,他引:1
作为纺织印染大国,如何实现印染废水中水回用是中国面临的重要课题。作者分别采用臭氧氧化法和超声波-活性炭法对已生化处理的印染废水深度处理。结果表明:臭氧氧化法可去除印染废水中75%的COD,使出水COD降至60 mg/L,超声波-活性炭联合法可去除印染废水中89.6%的COD,使出水COD降至25 mg/L,两种处理方法出水均能满足中水回用要求;通过比较,超声波-活性炭联合法优于臭氧氧化法。 相似文献
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MBR工艺在污水处理中的研究及应用 总被引:1,自引:0,他引:1
MBR在饮用水、生活污水、中水回用、造纸、印染、制药、石化、炼油等废水处理中的应用日益明显。文章主要介绍了MBR的典型类型、工艺特点及其应用中存在的瓶颈问题,重点阐明了MBR在各种废水处理中的应用,指出膜污染的控制措施,提出了今后的研究方向,并展望其良好的发展前景。 相似文献
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Solid solutions of diphosphates of zinc and copper and of zinc and cobalt were synthesized from mixtures of pure diphosphates at temperatures up to 1000°C. Their X-ray diffractometry patterns varied continuously from one end member to the other. Solid solutions of orthophosphates of composition Zn3−x Cox(PO4 )2, with x = 0.4–1.6, were formed at temperatures up to 950°C; all exhibited the structure of γ-Zn3 (PO4 )2. Solid solutions of orthophosphates of composition Zn3−x Cux (PO4 )2 exhibited more-complex behavior. At 1000°C and copper contents of 20–80 mol%, a phase that is related to Cu3 (PO4 )2, termed here the "ε-phase," predominated. At 850°–950°C and in the region from 20 mol% to ∼33 mol% of copper, the solid solutions (the "η-phase") adopted the structure of graftonite. At 800°–900°C and 10–15 mol% of copper, the solid solutions exhibited a new structure (the "δ-phase"), which we found to be related to the mineral sarcopside. At temperatures 950°C, the solutions that contained 5–15 mol% of copper (the "β-phase") had the structure of β-Zn3 (PO4 )2, whereas at 800°–850°C, solutions with 5 mol% of copper (the "-phase") exhibited the structure of γ-Zn3 (PO4 )2. Attempts to synthesize Cu+ ZnPO4 and Cu+ Cu2+ Zn3 (PO4 )3 were unsuccessful. 相似文献
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为了提高油田的生产效率,设计最佳的油气集输处理的工艺流程,更好地完成油气水分离处理的任务。对油气集输工艺技术进行优化,发挥高效油气水分离处理设备的优势,提高油气水处理的质量,保证油气集输工艺顺利实施,获得最佳的油田产量外输。 相似文献
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建设创新型国家是我们中华民族的历史责任。“自主创新、重点突破、支撑发展、引领未来”的16字方针应当成为我们未来创新活动的指南。建设创新型国家把自主创新放在首位,并提出了引领未来的高标准要求。钢铁科技创新必须突出重点,抓住创新成果产业化这个关键,支撑起行业和国民经济的发展。 相似文献
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相比已经完善丰富的开采和勘探技术,油气的运输以及储存却仍然存在不足之处。我国对能源安全提出更加严格要求的同时,对区域经济的发展规划也有足够重视。因此,保障油气管道的安全则成为了我国能源安全战略的重中之重。在阐释油气管道现阶段在储运安全保障技术发展状况的基础上,分析了现存的问题及解决问题的手段,并指出未来可能使用的目标策略,为今后研究者提供一定程度上的借鉴经验。 相似文献
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膜的污染和劣化及其防治对策 总被引:25,自引:0,他引:25
较为系统地介绍了膜污染和劣化的定义和特点,因膜污染和劣化而造成的膜性能变化,以及如何预防、减少或清除膜污染和劣化的一些通用方法。 相似文献
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James L. White David G. Salladay David O. Quisenberry Donald L. MacLean 《应用聚合物科学杂志》1972,16(11):2811-2827
Gel permeation chromatographic (GPC) and thin-layer chromatographic (TLC) studies of polystyrene, polybutadienes (BR), and their copolymers (SBR) have been carried out. GPC primarily separates them on the basis of molecular size, and TLC, on the basis of composition. Methods of obtaining absolute molecular weight distributions for BR and SBR based upon variations of the Strasbourg Universal Calibration procedure are described. In particular, [η]–M relationships in both the GPC solvent (THF) and in a second solvent (toluene) were used; in addition, results of statistical mechanical calculations for \documentclass{article}\pagestyle{empty}\begin{document}$\overline {s^2 }$\end{document} (based on the assumption of negligible steric hindrance and freely rotating bonds) were applied. An experimental comparison of these methods was carried out, and use of the [η]–M relationships for both solvents was found to give satisfactory results. The predictions of the statistical theory were too low. A detailed study of polymer–solvent–gel interaction in the GPC unit was made through investigation of ternary phase equilibrium in the (polystyrene)–THF–(polymer) system. The polymers studied included BR and SBR with varying styrene contents. Experimental techniques for TLC separations of BR, SBR, and polystyrene according to the composition are described. 相似文献