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Table of Content

      
    24 December 2007
    Volume 37 Issue 6
    Articles
    Articles
    Improved FCM clustering algorithm and its application inred tide prediction
    ZHANG Cheng-hui,NING Yong,JI Peng
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  1-4 .  doi:
    Abstract ( 667 )   PDF (266KB) ( 2081 )   Save
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    The distance definition in Euclidean space was weighted and the weight coefficient of samples effecting on the fuzzy clustering centers was estimated by using the similarity relations between samples and fuzzy clustering centers. As a result, the improved method was proved to have  a better result by using the method of data simulation. Meanwhile, the improved method was introduced into the red tide prediction, which visually reflects the distribution of samples of marine elements .
    Design and implementation of a realtime motion detection method based on DirectShow
    LV Xing,SHI Zhong-ke
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  5-9 .  doi:
    Abstract ( 672 )   PDF (298KB) ( 2581 )   Save
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    Under the DirectShow environment, a novel method of realtime motion detection was presented for the application of intelligent video surveillance system. First, a realtime motion detection algorithm was proposed, and then improved by combining the characteristic of DirectShow. Second, a filter component with the function of real-time motion detection was realized and the intelligent video surveillance system was established, which detects the motion goal first and then compresses and transports its images. Fianlly, the feasibility and advantages of this system was proved by experiments.

     

    A novel hybrid current control method applied in threephase four leg APF
    LIU Hai-chun,XIE Shao-jun,WANG Guo-feng
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  10-14 .  doi:
    Abstract ( 650 )   PDF (252KB) ( 1659 )   Save
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    Based on the analysis of circuit of threephase fourleg APF, conclusion was put forth, which means that the current control of three power legs is independent from the neutral leg. A novel hybrid control method was presented. SVM was used to control the output current of three main power legs, while hysteresis current control was applied to control the output current of neutral leg. As a result, current control of four legs was decomposed into the control of three main power legs and the control of neutral leg, which can sharply simplify the current control of APF. Compared with other current control methods, this new method has advantages such as easy to calculate, control and realize. The simulation results proves the correctness of this method.
    Highorder cumulant adaptive filter based on particle swarm optimization
    WANG Xiu-hong,GUO Qing-qiang,LI Qi-qiang
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  15-19 .  doi:
    Abstract ( 792 )   PDF (281KB) ( 1844 )   Save
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    High-order cumulantbased (HOC) adaptive filter can limit Gauss noise or other noise with symmetric probability distribution function. Current HOC-based adaptive filter commonly adopt gradient search method, but gradient search process is hard to avoid local convergence and complexity. Particle swarm optimization (PSO) is simple and easy to implement, and with no gradient information and other advantages, which can be used to solve many complex problems. Using PSO algorithm to optimize the filter coefficients was proposed as a new method, considering HOC-based coefficients adjustment of adaptive filter as an optimization problem. The simulation results show that using PSO can get higher precision in HOCbased coefficients optimization of adaptive filter. In addition, PSO algorithm is relatively affected little by system jump, which has certain advantage in nonstationary process model.
    Neural population with lateral inhibition of cortical columns based on Hodgkin-Huxley model
    DU Hong-wei,WANG Cong-qing
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  20-24 .  doi:
    Abstract ( 707 )   PDF (281KB) ( 2047 )   Save
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    Hodgkin-Huxley model has been used for the research on behaviors and characteristics of a single neuron, which failed to make up of neural network system. The HH model was proposed according to the inhibitory connection and excitatory connection among neurocytes, and a neural population system was outlined based on HH model to simulate the biological configuration and lateral inhibition of!the cortical columns. Lateral inhibition of cortical columns was applied to coding and decoding of the neural population to realize position tracking. Then the decoding strategy was changed to carry out the function of winnertakeall. The experiments verify the accuracy of position tracking and the improvement of winner-take-all on account of lateral inhibition in cortical columns.
    Application of the QR Code for various object identificationand manipulation
    XUE Hongtao,TIAN Guohui,LI Xiaolei,LU Fei
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  25-30 .  doi:
    Abstract ( 777 )   PDF (326KB) ( 2245 )   Save
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    There are many objects with different shapes and colors in home environment. It is difficult to separate the target from the complicated background image using the traditional image processing method. QR Code tag was designed for each object, so the identification process of object was changed into the identification process of QR Code. This method can reduce the calculation work, and improve the identification precision and speed. Manipulation information (such as grasp force, grasp pose, etc.) can be simultaneously recorded in the QR Code. The robot can know how to manipulate the target by decoding the QR Code. The QR Code detection and localization were realized by the trained cascade of boosted classifiers based on Haarlike features. Experiments show that the proposed method can recognize the target with high adaptability and robustness.
    Control method and implementation of an inspection robot for 110kV power transmission lines
    ZHOU Feng-yu,WU Ai-guo,LI Yi-bin,
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  31-35 .  doi:
    Abstract ( 719 )   PDF (291KB) ( 1659 )   Save
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    First, the control system of the 110?kV power transmission line inspection robot was introduced simply. Then a new control method and its realtime implementation for the robot were presented based on expert system. An algorithm was proposed to coordinate the operations between distributed expert systems, in which the principle of the goodness to fit to the rules and facts is employed for the decision making and reasoning mechanism. To implement the control method, a combination of computer languages including C, VC++ and CLIPS was adopted, which provide a convenient and effective software platform. Online experiment results show that the control method can guide the inspection robot to patrol along the transmission lines and cross various typical obstacles efficiently. At the locations of corners and bends of the transmission line, more complicated obstacles occur, so two subexpert systems work together and guide the robot passing through the locations smoothly.

    The mechanical characteristics and microstructure of the partial liquid phase diffusing bonding joint of Si3N4/(Cu,Nb)/Ni/Inconel600high temperature alloy
    YANG Min,ZOU Zeng-da,SONG Wen-peng,SUN Xiao-lei
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  36-40 .  doi:
    Abstract ( 762 )   PDF (257KB) ( 1556 )   Save
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     In order to obtain ceramic/metal joint with excellent high temperature properties under lower bonding temperature, less bonding pressure and short bonding time, the partial liquid phase diffusion bonding (PLPDB) of Si3N4/Inconel 600 has been conducted in vacuum diffusing bonding machine through asymmetric interlayer design. The bonding time, pressure and cooling velocity were 50min, 7.5MPa and 10K/min, respectively, and the bonding temperature varied from 1373K to 1403K. While the strength of joint was evaluated by shear test, the microstructure of joint was observed and analyzed by scanning electron microscope. Results show that the thickness of (Nb，Cu) layer, the ratio of Cu to Nb and bonding temperature affect the microstructure, strength and fracture of joint. When the bonding temperature was 1403K, the increase of Cu to Nb ratio resulted in the reduction of porosities in joint, increase of joint strength and change of the fracture location from the interface between ceramic and interlayer to ceramic. When the bonding temperature is 1403K, the ratio of Cu to Nb is 10 and the thickness of (Cu,Nb) layer isless than 0.2mm, the strength of joint is raised while the thickness of (Cu, Nb) layer got thicker. The strength of joint rose obviously while the bonding temperature fell from 1403K to 1373K.
    Thermal stability comparison of the IIb type and the Ib type diamond
    WANG Mei,LI Hesheng,LI Musen,TIAN Bin,
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  41-43 .  doi:
    Abstract ( 899 )   PDF (246KB) ( 1984 )   Save
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    The IIb type diamond was synthesized at high temperature and high pressure (HTHP) by using the technique of adding BN in Febased catalyst. The appearance of the IIb type and the Ib type diamond was studied under opticsmicroscope. Static compressive strength measurement, impact toughness measurement and DTA and TG analysis were used to research thermal stability of these two types of diamond in atmosphere. The results demonstrate that the IIb type diamond possesses not only fine static compressive strength and thermal impact toughness, but also owns excellent thermal stability. In addition, an available way is put forward to improve the thermal stability of diamond. Thermal decompose and mass loss of diamond happened at the same time shows that it is graphitization and oxidation of diamond causes the mass loss.
    Study on the effect of ZA alloy TIG flux on the weld formation and welding arc
    LIU Xiu-zhong,LI Shi-tong,LUN Ning,YANG Min
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  44-48 .  doi:
    Abstract ( 831 )   PDF (252KB) ( 1794 )   Save
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    In the welding process of ZA alloy, the effect of flux on the shape and voltage of welding arc were investigated by using highspeed camera and oscillograph. The influence of TIG flux on weld formation was analyzed. Results show that TIG flux affected the shape of welding arc and the formation of anode spot. However, the flux didn't obviously influence the cathode conductive district. TIG flux can result in the increase of welding arc section area and make anode spot outstanding. The voltage of welding arc does not increased greatly. The KCl and KF in flux can lead to the reduction of both welding arc minor contraction and section area. LiCl and ZnCl2 can make the section area of welding arc increase. ZnCl2  can prompt the formation of anode spot and make it obvious. ZA alloy TIG flux also can make the surface of weld finely and reduce the weld width.
    Out-of-step splitting scheme based on coherency identification and self-adaptive power system separation criteria
    LI Li,LIU Yu-tian
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  49-53 .  doi:
    Abstract ( 551 )   PDF (295KB) ( 1825 )   Save
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    By the identification and aggregation of coherent generators and according to the active power balance, splitting points were set rationally. Using the self-adaptive power system separation criteria based on the changing track of the voltage of oscillation center, a new out-of-step splitting scheme was proposed. This scheme can reduce the problem complexity and adapt to changes of network topology and operating conditions. Simulation results of Shandong power grid show the effectiveness.
    Analysis method of the 3D transformer electric field
    MIN Yue,XIAO Jing
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  54-57 .  doi:
    Abstract ( 692 )   PDF (219KB) ( 2298 )   Save
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     Problems in analyzing the 3-D electric field of transformers were discussed.  Simplifying the transformer model leads to a better way to solve these problems. Transformer models were given by INVENTOR and the method of importing this model into ANSYS was introduced. The 3-D electric field of transformers was analyzed with zero boundary method and infinite element method.  The results of both methods were compared with each other.  The merits of these two methods were discussed and the distributions of voltage and electric field were obtained. The calculating results are consistent with the theory analysis. The rationality of the method is verified and can be used on transformer design.
    Color transfer of a real-time face video
    LI Wen-ming,WU Xiao-juan,CAI Shen,ZHANG Tian
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  58-61 .  doi:
    Abstract ( 795 )   PDF (251KB) ( 1644 )   Save
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    To study the color of a face frame captured by a camera looking not well. The advanced methods used to transfer color between images were introduced, then the color of segmented face and hair regions of real time video were transferred with these methods. Many experiments with a VC++ program were done and theexperimental results prove  that the new algorithm can transfer every face frame's color in real time and remedy the color of an original real-time video.
    Packet scheduling algorithm based on a contention window for IEEE 802.11 WLAN
    WU Yin-gui,YUAN Dong-feng,LIU Jian
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  62-65 .  doi:
    Abstract ( 785 )   PDF (259KB) ( 1405 )   Save
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    The way in which IEEE 802.11 DCF uses random backoff scheme to resolve the channel contention leads to inefficient utilization of channel bandwidth resource. Especially in highly loaded network, the portion of channel bandwidth wasted in collision state is significantly high. A packet scheduling algorithm was proposed based on contention window which adds one contention window to divide contention stage into two parts. The nodes finishing the first stage of contention resolution can proceed to the second stage. Those nodes finishing the second stage of contention resolution will begin to access channel. According to the load situation of the network, proper contention window value of the second stage of contention resolution can be chosen. Simulation results show that this algorithm improves the utilization of channel bandwidth in a highly loaded network.
    Coordination of two kinds of interruptible loads of demand side and reserve capacity of generation side
    LUO Yun-hu,WU Xu-wen,PAN Shuang-lai,DONG Er-ling,SUN Xiu-juan,WANG Chuan-jiang,WU Na
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  66-70 .  doi:
    Abstract ( 848 )   PDF (288KB) ( 1591 )   Save
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    Interruptible loads with low price and high compensation of demand side and reserve capacity of generation side (RCGS) have been separately studied till now. All kinds of reserve capacities should be coordinated in order to improve economy of reserve capacity configuration and stable control for power system, and to effectively inhibit market power in reserve capacity market. Coordination model and optimization algorithm were proposed in the view of risk management based on their mutually supplementary properties in economy. Risk decision for RCGS was made and effects of various reserve market schemes were quantitatively studied. Simulation results were presented to validate this method.
    Link properties and electromagnetism calculation inairground HF communication
    MOU Xin-wei,XIE Shao-bin,JU Zhan-sheng
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  71-73 .  doi:
    Abstract ( 778 )   PDF (254KB) ( 2054 )   Save
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    The complex properties of airground HF communication are the key of researching air-ground HF communication. The properties of airground HF communication were introduced, and the main parameters of electromagnetism calculation in airground HF communication were discussed. The simulation of link properties and electromagnetism calculation in airground HF communication was given based on the ITS prediction program. The computation results can be used in planning and operation of highfrequency communication systems.
    Hybrid finite element method constrained by Lagrange multiplier in couplestress theory
    ZHANG Bo,WANG Xi-ping,LI Shu-cai,YANG Xue-ying,JIANG Xiao-bo,WANG Min,GAN Hui-ming5
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  74-78 .  doi:
    Abstract ( 825 )   PDF (283KB) ( 1610 )   Save
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    There is a constrained condition, of which macro rotation is equal to the micro rotation in couple-stress theory. The constraint condition is introduced by a penalty function technique in recent researches, which has not only some advantages but!also some disadvantages making the couple-stress theory using difficult. The constrained condition is introduced by Lagrange multiplier method to overcome these disadvantages of the penalty function technique. To meet the special demand of c1 continuity of the couplestress theory,  four nodes hybrid element is introduced. The numerical example validates the good accuracy and high efficiency of this method.
    Research on compaction standard of highway  foundation in the flooding area of yellow river
    YAO Zhan-yong
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  79-82 .  doi:
    Abstract ( 626 )   PDF (227KB) ( 1326 )   Save
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    Using the computaion methods of finite difference, the sedimentation law of highway foundation in the flooding area of Yellow River is analyzed in different degree of compaction and depths of compaction, the compaction standard and technical measures are put forth. It is proved that it is important to reduce the settlement after the completion of roadbed, when the compaction is more than 90% for the situation with the roadbed height less than 6m. When the roadbed is heigher than 6m, the compaction degree raising has little effect on reducing the deformation of roadbed, of, especially for the compaction ranging in 90%～93%. It exhibits the same regulation in enhancing the compaction depth as that in raising the degree of compaction, which has evident effects on reducing the foundation sedimentation . Therefore, compaction standard of highway foundation should be put forth according to roadbed height. When the roadbed height is ≤2m, the degree of compaction should be ≥93% within the scope of 30cm of foundation surface layer. When the roadbed height is in the range of 2～6m, the compaction degree should be higher than 90% within the scope of 30cm of foundation surface layer. When the roadbed height is more than 6m, the degree of compaction should be ≥85% within the scope of 30cm of foundation surface layer. It is pointed out that dynamic compaction and pound grinding is the most economic and valid engineering technical measures in the flooding area of Yellow River.
    Research on failure features of rock under different stress unloading path
    ZHANG Hong-bo,SONG Xiu-guang,HUANG MAO-Song,SHANG Qing-sen
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  83-86 .  doi:
    Abstract ( 822 )   PDF (235KB) ( 2395 )   Save
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    Stress relief of rock because of tunnel excavation should be paid attention to by engineers. Up to date, there are few researches on the strength and failure feature of rock around tunnel because of different excavation ways. Aiming to this phenomenon, the authors adopted rock triaxial test apparatus to model different stress unloading path according to excavation ways. Conclusions are drawn in detail with reference value on theory research.
    Variance research on pavement fatigue failure caused by the crown
    YAO Zhan-yong,WU Shi-mei,CHEN Chao
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  87-90 .  doi:
    Abstract ( 801 )   PDF (259KB) ( 1594 )   Save
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    In order to study the variance of the pavement fatigue failure under two different wheels caused by crown, the variance of pavement fatigue failure caused by the crown was computed using the finite element software(ANSYS). Fatigue lifetime of the pavement structure under the standard axle loading was calculated, and the concept of coefficient of different fatigue life was also put forward. The variance of sheering fatigue failure of surface and the tensile fatigue failure of sub-base under two different wheels was studied, respectively. The phenomenon was explained that the alligator crack or fissure of pavement under the right wheel is always heavier than that under the left wheel. The fatigue lifetimes of pavement under two different wheels were different. Furthermore, the variance coefficient of two sides' fatigue lives will increase rapidly with the crown increasing, as well as the increase of the height of gravitational center.
    The application and improvement of matterelement extension method used in water quality assessment of Yellow River
    ZHANG Long-yun,CAO Sheng-le
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  91-94 .  doi:
    Abstract ( 784 )   PDF (237KB) ( 1741 )   Save
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     It is defined in the extension monograph that “the extension concourse uses real numbers ranging in (-∞, ∞) to denote the character degree of some  things. Positive number denotes the degree of the character that things have, while the negative ones denotes the character degree that things do not have, and zero denotes the character that things have as well as have not". The “+" and “-" symbols are used for qualitative objective. The “+" and “-" symbols are used for quantification for the matterelement extension method, which  take the maximum degree of relationship as the rule of assessment.. The improvement of  this matter-element extension method is put forth, of which the essential is to improve the relationship degree and the rule of assessment. In addition, the improved method is applied to the water quality assessment of Yellow River with more rational results.
    Accessment and analysis of water quality of Dongchang Lake
    SUN Wen-zhang,CAO Sheng-le
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  95-97 .  doi:
    Abstract ( 977 )   PDF (237KB) ( 2036 )   Save
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    Dongchang Lake is a famous city lake beauty spot in Shandong Province. Based on the water quality data of 2006, the water quality of Dongchang Lake is assessed and analyzed by fuzzy pattern recognition model, concentration exponent method and rating method, in terms of surface water quality standard, scenery and recreation water using standard and lake eutrophication.  The results show that the water quality of Dongchang Lake is of class Ⅳ, and some contaminant indices  do not satisfy the requirement of scenery and recreation water using standard, and the water is resulted in eutrophication. Finally, suggestions and measures are put forward according to the evaluation results.
    Application of integer planning in optimal allocation of drinking water resources in the rural area
    GAO Feng-hua,CAO Sheng-le,XU Guang-jie
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  98-100 .  doi:
    Abstract ( 736 )   PDF (219KB) ( 1571 )   Save
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    Integer planning is used to establish the optimal allocation of rural area drinking water resources. This model is used for solving the rural areas drinking water problem in Bincheng area. The compute program attached to this model is worked for calculation.
    Direct calculation method for critical depth of open trapezoidal channel
    ZHAO Yan-feng,WANG Zheng-zhong,ZHANG Kuan-di
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  101-105 .  doi:
    Abstract ( 955 )   PDF (274KB) ( 2258 )   Save
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    By introducing nondimensional parameterunit surface width, an iterative formula on critical water depth of open trapezoidal channels is proposed according to mathematical transformation. Combined with right initial value，direct calculation formula of critical water depth of trapezoidal section is obtained. The greatest relative error is less than 0.082% within all the sections of trapezoidal channel. Examples of error analysis and calculation show that its direct formula format is shortcut, effective and correct.
    Nonlinear stability analysis of concrete filled steel tubular arches based on the fiber model
    ZHOU Yong,ZHANG Feng,LI Shu-cai,LI Shu-cheng
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  106-110 .  doi:
    Abstract ( 694 )   PDF (291KB) ( 2260 )   Save
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    Through nonlinear analysis concrete filled steel tubular arches' mechanical property was researched. The appropriate constitutive equation was selected. Flexibilitybased nonlinear beamcolumn element was used. The calculation formulae of the fiber model were deduced. The mechanical researches show that lateral loads acts more influence on lateral deformation than vertical deformation. The influence of lateral loads on vertical deformation is presented at last loading stage, while the influence on lateral deformation is presented throughout the entire loading history. The lateral loads decreases the ultimate loading capacity of arches significantly. When the lateral load is equal to the 50% of vertical load, the ultimate loading capacity of arches lost 50%. Lateral loads at mid span put more influence on lateral deformation than that at 1/4 span. It is concluded that influence of lateral load on the arch bridges must be considered fully during the design of arch bridges.

     

    An ant colony algorithm for an aircraft sequencing problem in the airport terminal area
    CHEN Xin,YANG Wen-dong,LU Xun,ZHU Jin-fu
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  111-117 .  doi:
    Abstract ( 872 )   PDF (328KB) ( 1872 )   Save
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    Aircraft sequencing problem (ASP) is a non-deterministic polynomial hard (NPhard) problem, which is hard to resolve. The ASP is treated as a particular job-shop scheduling problem (JSP), and an ant colony algorithm(ACA) for ASP is designed with the objective of minimizing the makespan of landing airplanes. The orthogonal test is employed to study the optimal parameters of ACA for ASP. The efficiency and reliability of ACA for ASP is investigated by comparing with the sequencing results of FCFS method for different numbers of landing aircrafts. The ACA for ASP is proved to be better than FCFS, which can decrease the makespan of landing airplanes by 14%. The ACA of ASP can obtain a satisfied solution with shorter CPU time, which can provide support for the realtime automatic air traffic management.
    The gas diffusion electrode of indirectly oxidized organic pollutants in wastewater
    LI Shan-ping,ZHANG Qi-lei,HU Zhen,LUAN Fu-bo,ZHEN Bo-ru
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  118-121 .  doi:
    Abstract ( 678 )   PDF (241KB) ( 1526 )   Save
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    The acid flavine 2 G simulated wastewater was electrolyzed with membrane structured gas diffusion electrode (GDE) . The appropriate preparation conditions were discussed based on the experiment. According to the polarization curve and electronic microscopic pictures of electrodes, the reason of electrode performance improvement was analyzed. The results show that the optimal proportion of preparation conditions is ascertained. The proportion of graphite, PTFE and cavitiesmaking reagent is 1∶0.5∶0.05, and the Pt dosage is 1.5mg/cm2. The main reason of electrode performance improvement is the large quantities of gas cavities formed by poreforming material and the enough dissolved oxygen formed by aeration, which can create H2O2.
    Study on the capability of Ti based lead dioxide electrode andits usage in the treatment of acid flavine 2G wastewater
    LI Shan-ping,CAO Han-lin,HU Zhen,ZHANG Qi-lei,ZHAO Yu-xiao,FAN Si-si
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2007, 37(6):  122-126 .  doi:
    Abstract ( 529 )   PDF (261KB) ( 1628 )   Save
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    The capability and structure of Ti/Sb2O5+SnO2/α-PbO2/β-PbO2 anode is researched by SEMand XRD. This electrode is used in the treatment of acid flavine 2G simulated wastewater， and the effects of parameters on the removal efficiency of COD are also studied. The optimal parameters obtained are as follows, the current grade is 0.6A, the electrolytic time is 6h, the electrode distance is 32mm, the initial pH is 6.0. The experimental results indicate that the reactor could remove COD and the biodegradability of the wastewater efficiently.
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