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In order to verify the effectiveness of electrolytic treatment on ships' ballast water,experiments are carried out by a pilot system in laboratory. The raw seawater and seawater with different concentrations of different algae are simulated as ships' ballast water. The algae in the raw seawater can be killed if it is treated by electrolysis with an initial residual chlorine concentration of 5 mg/L. If the seawater with one kind of algae (Nitzschia closterum, Dicrateria spp., or Pyramidomonnas sp.105cells/mL) is treated by electrolysis with an initial residual chlorine concentration of 5 mg/L, the alga can be sterilized. If the seawater with one kind of algae (Dunaliella sp., Platymonas or Chlorella spp.)is directly treated by electrolyzing with an initial residual chlorine concentration of 4 mg/L, the instant mortality changes with the concentration of different algae. However, after 72 hours, in all treated samples, there are no live algal cells found. 相似文献
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海水系统防海生物装置的设计原理与比较分析 总被引:3,自引:0,他引:3
本文较详细地介绍了在海水系统中,海生物防治装置的设计原理和电流及离子浓度的计算方法, 通过对不同形式的防海生物装置的综合分析与比较,较详细地说明了正确选择适当防海生物装置的方法。 相似文献
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DANG Kun SUN Pei-ting XIAO Jing-kun SONG Yong-xin 《船舶与海洋工程学报》2006,5(4):58-61
In order to verify the effectiveness of electrolytic treatment on ships' ballast water, experiments are carried out by a pilot system in laboratory. The raw seawater and seawater with different concentrations of different algae are simulated as ships' ballast water. The algae in the raw seawater can be killed if it is treated by electrolysis with an initial residual chlorine concentration of 5 mg/L. If the seawater with one kind of algae (Nitzschia closterum, Dicrateria spp., or Pyramidomonnas sp.105cells/mL) is treated by electrolysis with an initial residual chlorine concentration of 5 mg/L the alga can be sterilized, If the seawater with one kind of algae (Dunaliella sp., Platymonas or Chlorella spp.) is directly treated by electrolyzing with an initial residual chlorine concentration of 4 mg/L, the instant mortality changes with the concentration of different algae. However, after 72 hours, in all treated samples, there are no live algal cells found. 相似文献
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本文探讨了Ni-S电极的制备方法,通过改变电镀时间、电流密度和硫代硫酸钠的浓度,得出Ni-S电极制备的最佳工艺条件。 相似文献
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电解水式驻留微气泡减阻技术及其可行性分析 总被引:1,自引:0,他引:1
在通常的气幕减阻技术中,由于气泡的不断流失容易产生能耗增大、减阻效果下降等问题。该文提出一种利用驻留微气泡的减阻技术。微气泡产生于阵列布置于航行体表面的微凹坑中,并在航行过程中稳定驻留于凹坑处,从而有效降低局部摩阻系数;微气泡通过电解水产生,并可反过来对电解反应进行自适应控制,从而自适应地控制供气量和气泡形状。通过初步数值模拟和实验,对影响气泡驻留的因素进行了定性的分析。设计了一种电解反应自适应控制的凹坑结构,用于气泡形状和电解反应的自动控制。通过数值计算,对一特定条件下驻留微气泡的理论减阻能力进行了讨论。 相似文献
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张藜 《变流技术与电力牵引》2014,(2):41-45
通过对国内铝电解整流装置使用现状的分析,对目前在役的大功率铝电解整流装置的技术特点、存在的问题作了阐述与分析,特别是对在电解系列直流电压不断升高时整流装置各个方面由量到质的变化情况进行了详细的分析与比较,并对目前铝电解整流装置存在的缺陷提出了具体可行的技术和制造改进意见。同时根据铝电解工艺及系列产能规模的发展趋势以及现代煤电铝联营模式的要求,对今后大功率铝电解整流装置的技术发展提出了切实可行的建设性意见。 相似文献
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汤理平 《交通部上海船舶运输科学研究所学报》1995,18(1):25-31
探讨如何防止海船船体水下部分受海水腐蚀和海洋生物的附着。着先介绍3种传统的防污涂料,分析它们的优缺点,然后列述各国研究开发的低毒或无毒的防污涂料新品种以及新型无公害防污技术-利用导电涂层防止海洋生物附着的技术。最后就我国海船无公害防污技术的应用和发展发表一些见解。 相似文献