Advanced Materials Research Vol. 487

Abstract: Preparing 0.2μm, 3μm and 10μm three types of ceramic membrane with membranes pore size through solid state ion sintering process, and treat tanning process wastewater by them. Analyze hardness, sulfide content, ammonia nitrogen (NH3-N) and CODCr before and after the wastewater treatment, calculate and compare their removal rates. Results indicated that tanning process wastewater was treat by plate-type ceramic membrane, the removal rate of wastewater hardness was over 63%, the removal rate of sulfide, CODCr and NH3-N could be achieved 83%. It can get satisfactory removal efficiencies, and meet the national discharge standard, also can be recycled in industry.

Abstract: This paper establishes logistics system in the central economic zone, which make stable development of systematic logistics and format for the central zone, targeted, scientific and operational response options to streamline the logistics industry chain, optimizing logistics resources configuration, reducing logistics operating costs, mining profit source logistics, impedance logistics system risk, thus improving the overall logistics and economic operation quality and efficiency of the optimal policy plan. The results enrich the new form of logistics development theory, decision making for policy makers, and have important application value, significant social and economic benefits.

Abstract: Image weak edge detection has a wide application. An improved ant colony algorithm is used for image edge detection . When image background is very complex ,the weak edge detection is more difficult. Around the key steps in the existing ant colony algorithm , we propose two improved methods. First, the expression of pheromone has been improved, and second, to improve the heuristic information value is calculated. Finally, the improved ant colony algorithm with the traditional Canny edge detection algorithm are compared.The improved edge detection experiments show that the new algorithm is position detection accurate, continuity, and the advantages of less interference.