In order to study the rapid start⁃up of biofilters in seawater recirculating aquaculture systems, this study investigated the removal effects of seawater biological fluidized bed on pollutants under different hydraulic retention time (HRT) and temperature conditions, and explored the impact on initiation of seawater biological fluidized bed. The results show that: HRT=1 h experimental group can achieve material conversion and return to equilibrium more quickly, which is suitable for membrane loading; the high temperature conditions (28 ℃) are suitable for fluidized bed initiation, and the biofilm attachment growth can be observed more quickly.

The composite material Hβ/OMC containing the mesoporous carbon (OMC) and Hβ zeolite was synthesized. This composite was characterized with XRD, BET, FITR, SEM and TEM. The adsorption desulfurization performance of Hβ/OMC was investigated with benzothiophene (BT) as the probe molecule. The adsorption thermodynamics and kinetics of the BT on Hβ/OMC were studied. The characterization results showed that Hβ/OMC has the micro⁃mesoporous hierarchical pore structure, its specific surface area, pore volume and pore diameter are all higher than those of OMC. The saturated sulfur capacity of BT on Hβ/OMC is higher than OMC. Compared with Freundlich adsorption isotherm model, the adsorption of BT on Hβ/OMC is more consistent with Langmuir model. The adsorption of BT on Hβ/OMC is a process of spontaneous, exothermic and degree of confusion reduction, which is described better by pseudo⁃two⁃kinetic equations than pseudo⁃one⁃kinetic equations.

At present, Bohai L oilfield has entered the adjustment stage of Cr3+ polymer gel flooding ("polymer flooding"). It is urgent to search for further EOR method after polymer flooding. In view of the actual demand of the oil field, the physical simulation research on the method of improving the recovery rate after the polymer flooding and the optimization of the injection parameters are studied in this paper. The result shows that compared with the" high molecular weight " high concentration polymer solution,the salt resistant polymer solution, "polymer/surfactant" two element system and "alkali/surfactant/polymer" three element system, the increase in recovery rate of Cr3+ polymer gel flooding is larger after polymer flooding, and the technical and economic effect is better. with the increase of the size of the slug injected into the plug, the increase of the recovery rate shows a trend of "first increase and then decrease". When the size of the injected plug is 0.2 PV, the ratio of the largest.Under the conditions of the same size of flooding agent slug, compared with the whole slug, the recovery rate of "Cr3+ polymer gel + water + polymer solution + water" or "Cr3+ polymer gel + water" alternate injection increased greatly, showing that the injection mode can slow down the process of "suction profile inversion" and further improve the wave sum coefficient of low and medium permeability layers.

    Mesoporous carbon was prepared by loading four different metal ions Ag+/MC, Zn2+/MC, Cu2+/MC, and Fe3+/MC by impregnation method using mesoporous carbon (MC) as the carrier.The influence of the loading quality and the species of the metal ions on the adsorption were investigated.The results show that the adsorption capacity of two thiophene (DBT) can be improved by loading Ag+, Zn2+, Cu2+ and Fe3+ on the surface of mesoporous carbon.The optimum adsorption efficiency of mesoporous carbon with different metals is compared. The order of adsorption capacity of DBT is Ag+/MC>Zn2+/MC>Cu2+/MC>Fe3+/MC. Among them, the adsorption efficiency of loading 10% Ag+ on the mesoporous carbon is best. Compared with the untreated mesoporous carbon sulfur saturation capacity increases 1.11 mg/g, through the sulfur capacity also rises 1.93 mg/g.

The graphical interface is one of the basic components of the monitoring configuration software, which has a great impact on the software. However, a variety of configuration software currently used different graphic styles to form the monitor screen, so that different systems interact difficultly. To overcome this shortcoming and improve the reusing rate of code writing monitor screen and enhance applications efficiency of dealing with a lot of graphics information, this paper sets up a monitoring graphics elements library of configuration software, which uses SVG recommended by the international image formats of monitoring interface, and elaborates the way to define equipment element property. Integrating Batik project of ASF (Apache software foundation) and adopting Object Orient Design Thought, the paper analyses and designs the monitoring graphics elements library module of configuration software. Configuring graph's properties as the corresponding with relational SQL datebase which facilitate the programmer inputs data, can improve the total level of the configuration software.

Using soil column leaching method, the best leaching conditions have been studied with the organic phosphonic acid PAPEMP, including different ratio of soil to solution, leaching time and leaching frequency on the Cd removal rate, respectively. The research results showedwhen the quality percentage of PAPEMP was 7%, the ratio of soil to solution of 1∶4, the leaching time of 240 min and leaching once, the removal rate of Cd was the highest. PAPEMP can be used in leaching remediation of Cd contaminated soils.

The pretreatment of spent lubricating oil to remove part of the water and impurities was carried out firstly, then the flash device are used for further removal of water, followed by the distillation in atmospheric and vacuum distillation unit. A lowfreezingpoint, high stable light diesel were produced in the atmospheric distillation zone; different kinds of lubricating base oils which are all available resources were produced by vacuum distillation segment combined with complex agent refiningalkaline cleaningclay refining process. Additives were added finally to improve the oil quality. The additional purification process conditions were identified: the mass fraction of acid solvent 4.5% which contains the mass fraction complexing agent 1.5% for pickling; 1% NaOH aqueous solution with its mass fraction of 40% were added for alkaline cleaning at 40 ℃, then 3% clay was added and stirred for 25～30 min at the temperature less than 120 ℃. This processing technology not only reduces the pollution effectively, but also greatly improves the reutilization of waste oil.