共查询到19条相似文献,搜索用时 464 毫秒
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让纳若尔油田采出水处理汽提脱硫工艺,高温工况下结垢严重,筛选合适的阻垢剂并对其进行应用评价,使脱硫塔达到良好的运行效果。文章分析了汽提脱硫装置结垢原因,进行了常规阻垢剂筛选评价、新型合成阻垢剂性能评价、化学平衡防垢技术的研究。结果表明:现场试运行实验投加有机复合酸离子调整剂A40mg/L、新型合成阻垢剂G-3为30mg/L,作为适合本工程的阻垢剂。 相似文献
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针对温米采油厂采油污水物化处理系统存在的问题,对水处理药剂进行优选试验,分别对混凝剂、氧化剂、阻垢剂、缓蚀剂进行了药剂种类筛选和用量试验,得出最佳处理药剂配方为:聚合氯化铝(PAC)90 mg/L、聚丙烯酰胺(PAM)5 mg/L、氧化剂(高锰酸钾)5 mg/L、阻垢剂(FZ-325)100 mg/L、缓蚀剂(KYHS3~#)60mg/L。采用该药剂配方处理污水,水质达到SY/T 5329—2012《碎屑岩油藏注水水质指标及分析方法》,满足回注要求。 相似文献
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以白鲢鱼为实验生物,采用半静态实验方法,研究了几种油田化学剂的半致死浓度和安全浓度。研究表明:防膨剂、杀菌剂K、杀菌剂L、清蜡剂、四氟硼酸、酸化缓蚀剂、阻垢剂、阻垢缓蚀剂、缓蚀阻垢剂和破乳剂的96h半致死浓度LC50值分别为0.68、1.6、9.3、25、123、510、620、3240、4570、7410mg/L。根据化学物质对鱼类毒性物质分级标准,防膨剂属于剧毒物质;杀菌剂K、杀菌剂L和清蜡剂属于高毒物质;四氟硼酸、酸化缓蚀剂和阻垢剂属于中毒物质;阻垢缓蚀剂、缓蚀阻垢剂和破乳剂属于低毒物质。这几种油田化学剂的安全浓度为0.068~741mg/L。此研究可为评价油田化学剂对水生生物的影响,制定废水排放浓度标准提供依据。 相似文献
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This study focused on using scale inhibitors for calcium sulfate that are not only highly effective, but also comply with
present restrictive environmental control legislations. In this respect, some biodegradable compounds-based biopolymers, such
as carboxymethyl starch (CMS), carboxymethyl cellulose (CMC), and chitosan (Ch), were evaluated at temperatures 90–95 and
130°C. The results obtained were compared with the performance of polyaspartic acid (PAA), which is well known in this application,
as well as other chelating synthetic polymers (polyacrylamide and amphoteric polyacrylamide). The role of the degree of substitution
(DS) of carboxymethylated biopolymer and the charge density of polyacrylamide (AmPAM-30 and AmPAM-50) on inhibition performance
of scale were also examined. The synergistic effect of PAA with investigated inhibitors was studied for economic and environmental
purposes. The results revealed that both the degree of substitution of carboxymethylated biopolymers and charge density of
polyacrylamide have a profound effect on improving the performance of the investigated scale inhibitors. The efficiency values
were correlated to the thermal degradation behavior (TGA) of biopolymers. PAA had the highest synergistic effect of all investigated
inhibitors, where the inhibition efficiency was found to range from 98% to 100%, at a temperature of 130°C, with low doses
of both PAA (2 ppm) together with biopolymers. This efficiency is observed using 20–40 ppm of PAA. The synergistic effect
of PAA (2 ppm) also showed enhancement of the performance of low doses of polyacrylamides (5 ppm) in maintaining soluble Ca2+ in solutions, increasing the efficiency from ∼57% to ∼100%, as well as its ecotoxicological property. 相似文献
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本文从新型工业化与环境保护的关系出发,论证了环境保护在实施新型工业化战略中的地位和作用,提出了在推进新型工业化中构筑从招商引资、项目选控到集约运营全过程的环保支持系统的意见和建议。 相似文献
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贾文婷 《中国环境管理干部学院学报》2011,(6):5-8,24
目前中国并没有专门用于环境目的的税种,环境管理的经济手段主要依靠资源税、消费税等相关税种与排污收费制度,但其均存在征收范围过窄、环保意义不突出等问题。因而应从面临的现实环境问题出发,兼顾税收体系的总体平衡,在完善现有相关税种的基础上开征新的环境保护专项税,从而建立起以排污税、产品消费税、资源税为基本构成的融入型环境税收体系。 相似文献
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环保投资是环保工程项目实施的重要保障,为打好污染防治攻坚战、推进美丽中国和生态文明建设提供了有力支撑。本文回顾了近40多年来中国环保投资政策演进历程,将其划分为企业主体阶段(1979—2003年)、政企并重阶段(2004—2012年)、多元投资阶段(2013年至今)。从规模加大、构成丰富、渠道拓展及强化效益四个方面,总结了环保投资主要进展与成效。基于高质量发展不足、回报机制不健全、投资绩效待提高三个角度,识别当前环保投资存在的关键瓶颈。从强化气候投融资、鼓励投资机制创新、加大财政支出力度、促进多元投资、提高投资效益等五个方面,对未来环保投资政策优化方向进行了展望。 相似文献