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This paper introduced a new method for fabricating aluminum foam sandwich (AFS) panel with large scale dimension. The foamable Al-based precursor was prepared by optimized FORMGRIP foaming method which was developed from melting process. The blowing agent was specially modified to increase the decomposition temperature. To avoid surface oxidation, the mild cover sheets were aluminized by cold spraying technique. An optimized hot pressing technique was designed and showed great advantages in the bonding of the precursor to the cover sheets at low temperature. The precursor and the cover sheet was successfully bonded by using a specially designed hot pressing apparatus via diffusion bonding. It is shown that the pre-bonding in the three-layer composite is beneficial to the formation of metallurgical bonding surface in AFS. The foaming and bonding process was carried out simultaneously. This approach for manufacturing AFS may have particularly importance on applying the AFS panels to industrial applications.

Two basic methods can be used to fabricate aluminum foam. One is powder metallurgy route which can provide the near net shape casting containing aluminum foam core, and the other is melt foaming route which can prepare large scale aluminum foam plate directly. To combine the advantages of above two methods, the precursor was obtained through melt foaming route and then baked in a furnace like that of powder metallurgy method in this investigation. The test results indicated that the SiC and TiH2 particles after treatment in air could be dispersed in Al-Si matrix alloy melt and the precursors were obtained. The porosity and their pore diameter of the precursors decreased along with the temperature reducing as well as the magnesium or SiC particles adding. The density of Al-Si alloy foam decreased with the elevation of baking temperature and extension of heating time before collapse of foam block occurred. The foaming process parameters were seriously affected by the aluminum alloy composition.

Sludge composting is an effective method of urban sewage sludge by composting,It can make the sludge into the organic fertilizer for plant growth. In this experiment, straw as bulking agents, through aerobic composting experiment, analysis the changes of temperature, moisture, pH, water soluble organic carbon and germination index during the composting process,The results showed: through aerobic composting can achieve for urban sludge harmless, stabilization and reduction.

The finite element model of metal structure of 45 tons container stacker is established and Ansys software is employed to calculate the stress of key parts. The skill of model processing of the complete machine and the boundary condition of calculation model is described. The calculation results are used to guide the design of the container stacker.

According to the water quality characteristics, micro-polluted source water treatment by ozone combined processes. The results show that the average removal efficiencies of algae, CODMn, NH4+-N, turbidity, chromaticity by bio-pretreatment filter are 72.0%, 14.5%, 80.5%, 58.6% ,26.0%, respectively; while the whole average removal efficiencies by pre-ozonation tank following bio-pretreatment filter had increased at the different dosages of ozone, such as algae 12.0%, CODMn 19.5% ,NH4+-N 7.5%, turbidity 10.9%, chromaticity 34.5%, respectively; and the optimal dosages of ozone are between 0.7 and 1.5mg/L. Furthermore, compared with the conventional water treatment process, all kinds of combined water treatment processes are better than the conventional one, of which the combined process Ⅲ with granular activated carbon (GAC) adsorption tank is obviously the best, all the average removal efficiencies of algae, CODMn, NH4+-N, turbidity, chromaticity can reach 82%, while whose operation expenditure is higher than any others, so it should be considered comprehensively in the practice.

Compared biological sand filtration system with conventional water treatment, taking micro-polluted water river as source water. The results show that biological filtration system is excelled to conventional water treatment, the removal rate of CODMn, NH4+-N, chromaticity and turbidity is 34~56％, 78.7~92%, 53~68%, 90% by biological sand filtration system; however, the removal rate of CODMn, NH4+-N, chromaticity and turbidity is only 11~30%, 4.7~25%, 38~54%, 60~80% by the conventional water treatment and the remval effection is instability; therefore, biological filtration system is pertinency and feasibilty in the micro-polluted source water.