共查询到17条相似文献,搜索用时 125 毫秒
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二氧化氯以其安全、经济、实用以代替氯气。而广泛用于饮用水的处理,本文从二氧化氯的理化性质、主要特征及潜在的毒副作用等方面进行阐述,证明了开发利用二氧化氯作为饮用水处理剂应用前景广阔。 相似文献
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利用二氧化氯在360nm处有一最大吸收峰以及二氧化氯能够通过微孔性聚四氟乙烯膜的特性进行了静态膜分离的研究。通过研究温度和二氧化氯的浓度对分离效果的影响,可以确定:温度越高越有利于二氧化氯的膜分离,但温度高于20℃时二氧化氯会发生分解,故最佳分离温度应为20℃。 相似文献
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三种常用饮用水消毒剂的应用和前景评价 总被引:6,自引:0,他引:6
本文对氯、二氧化氯、臭氧在消毒机理、消毒副产物、消毒效果、消毒持久性、成本效益等方面的比较分析,阐明三种消毒剂今后的发展前景。认为二氧化氯比较乐观,但需尽快解决制备方法、原料生产、应用理论研究等难题。此前,液氯消毒还将在我国大多数净化水厂采用,因此也提出了当前条件下净化水厂应该采取何种方法来减少三卤甲烷等消毒副产物的生成。 相似文献
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本文阐述了氰镉废水的来源及危害,分析了氰镉废水的处理方法,研究了氰镉废水处理技术及工艺,论述处理技术设备的选择及系统集成PLC控制;介绍了二氧化氯破氰工艺技术及JD-5型一体化电镀废水处理设备原理及应用。本次研究的工艺技术的成功应用为国内同类废水处理提供了样板工程和经验。 相似文献
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对注空气低温氧化辅助热采废水的处理进行实验研究,先进行混凝处理,再分别采用Fenton氧化法和二氧化氯氧化法对废水氧化处理。结果表明后者效果较好,二氧化氯最佳投加量为300 mg/L,催化剂活性炭-Ni投加量为2.5 g/L,反应2 h,COD_(Cr)降低至129.14 mg/L,去除率达到95.29%,出水无色透明。二氧化氯氧化法适合于海上油田注空气低温氧化辅助热采废水的处理。 相似文献
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高级氧化技术在油田水处理中的应用 总被引:8,自引:1,他引:8
概述了高级氧化技术的基本原理和发展历程,介绍了臭氧氧化、二氧化氯氧化及光催化氧化等典型的高级氧化技术及其在水处理中的应用进展情况。结合目前油田水处理中出现的新问题,如硫酸盐还原菌含量高、有机物浓度高、微生物易于繁殖以及结垢严重等现象,对高级氧化技术在油田水处理中的应用前景进行了论述。同时提出应进一步加强对油田采出污水杀菌、油田水的灭藻和除泥、油田地面水体油污染控制等方面的研究。 相似文献
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Ronald W. Ward G. Michael DeGraeve 《Journal of the American Water Resources Association》1980,16(1):41-48
ABSTRACT: This study determined the acute toxicity of waste water disinfected with chlorine, bromine chloride, or ozone. The residual toxicity of effluent dechlorinated with sulfur dioxide was also tested. Toxicity tests were conducted with cyprinid, salmonid, and centrarchid fishes, as well as several species of fresh water macroinvertebrates. Residual chlorine exhibited the greatest toxicity of the disinfectants tested; dechlorination with sulfur dioxide effectively eliminated the toxicity of chlorinated effluent. Residual ozone produced mortality in test animals only under special conditions where subjects were exposed to effluent immediately after it was contacted with ozone, and chlorobrominated effluent was more toxic to salmonids than chlorinated effluent. 相似文献
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海水反渗透膜生物污染是由微生物在膜表面沉积和生长而形成的生物膜造成的污染,因此控制膜生物污染可从杀死微生物和抑制其生长两方面进行。目前常用的控制膜生物污染的两大方法是通过投加杀菌剂(如氯、二氧化氯、臭氧、UV、DBNPA)来杀死微生物和去除碳营养元素来抑制其繁殖。应用"在线混凝+MF/UF"的预处理方法,通过去除磷来控制海水反渗透膜生物污染将成为未来的研究趋势。 相似文献
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Ronald W. Ward G. Michael DeGraeve 《Journal of the American Water Resources Association》1978,14(3):696-709
ABSTRACT: This study was conducted to determine the comparative acute toxicity of chlorine, bromine chloride and ozone in wastewater, and to determine any acute toxicity associated with chlorinated wastewater which had been dechlorinated with sulfur dioxide. Toxicity tests were conducted with several species of cyprinids, salmonids and centrarchids, and the freshwater macroinvertebrate, Daphnia magna. Chlorinated effluent exhibited the greatest potential for residual toxicity of any disinfected stream tested. The reduced residual toxicity of chlorobrominated or ozonated effluent was largely the result of the more rapid dissipation of these disinfectants in wastewater. The acute residual toxicity of chlorinated effluent was eliminated by dechlorination with sulfur dioxide. 相似文献
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Daniel Press 《Environmental management》1996,20(5):725-730
Toxic Release Inventory (TRI) data were used to compare average releases (kilograms per metric ton) of paper mills using primarily recovered wastepaper versus mills using primarily virgin wood fiber. Annual releases, for 79 mills, of chlorine, chlorine dioxide, chloroform, acids (hydrochloric and sulfuric), volatile organics (methyl ethyl ketone, methanol, and acetone), and ammonia were compared over the years 1987–1992. Both types of mills reported generally lower toxic releases in 1992 than in 1987; however, toxic releases in all categories were significantly lower from mills using recovered wastepaper than from mills using virgin wood fiber, strongly demonstrating that recycling has added benefits beyond reduced resource consumption. These results suggest that environmental policy should concentrate as much on increasing demand for recycled paper and developing wastepaper collection infrastructure as it does on end-of-pipe pollution abatement. 相似文献
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本文对某印染工业园区的混合废水处理装置开展了连续两年的运行调查,并对其进行了完善和提标改造的技术探讨。研究表明,污水处理装置的出水氨氮、总磷达标,BOD5、色度接近排放标准,而CODCr、SS难以达到一级排放要求。在现有工艺流程条件下对出水进行砂滤和二氧化氯强氧化能够保证出水达到一级A排放标准。 相似文献