Applied Mechanics and Materials Vols. 260-261

Abstract: With the specific cases, this paper summarizes the general process, target, framework, database logical and physical structure and various application function of environment geology information system based on GIS, in order to provide some reference for the construction of relevant system.

Abstract: Based on field test,Typical debris flow profile in Quaternary was analyzed on the eastern edge of Qinghai-Tibet Plateau. According to relationship between debris flow deposition profile and geological age,debris flow deposition and neotectonics history,deep-sea oxygen isotope curve,loess-paleosol series were compared. Like other sediments, debris flow sedimentary body is constructed with action of neotectonics and climate.Debris flow deposits within the body surported by the absolute age date was a regular change in the vertical,which also reflected the environmental evolution. The relationship between environmental evolution and debris flow deposits was analyzed and the following conclusions were drawn: Fluctuations of debris flow deposits and intermittent uplift of neotectonics was basically a coincidence since the Quaternary in Xiaojiang River Basin whose debris flow deposits may correspond to climate of cold (cool) wet or warm (hot) wet.Fluctuations of debris flow deposits and climate cycles was basically a coincidence in Bailongjiang River Basin whose debris flow deposits only corresponds to the warm (hot) wet climate.

Abstract: Papermaking black liquor was processed with WAO method，Chroma of papermaking black liquor water was 1,250,000 times and COD concentration was7028 mg/L. Effects of influent pH on its treatment were researched. The CODCr, absorbance, turbidity and pH of effluent water were determined. COD removal, decolorization removal, turbidity removal were analyzed. The results showed that: treatment effects gradually weakened with the increase of influent pH in the treatment of papermaking black liquor with WAO method. Influent pH was in between 3.0 to 7.0 appropriate. When papermaking black liquor was processed by wet air oxidation after, COD removal, decolorization and turbidity removal basically improved with the extension of time, reaction time set at 60 min was appropriate.

Abstract: Black liquor was processed with wet air oxidation technology in these experiments. Influence of its influent concentration was researched. COD, absorbance, turbidity and pH of the water samples were measured and analyzed. The results showed that: the treatment effect of each index in black liquor treatment with wet air oxidation method gradually weakened with the increase of influent concentration from the overall point of view; when papermaking black liquor was processed by wet oxidation, the water samples was weak alkaline basically, with pH in between 7.83 to 8.70. COD removal, decolorization removal and turbidity removal basically improved with the extension of time, the COD removal and decolorization removal can reach 50 % or more basically. When influent concentration was greater than 5500 mg/L, turbidity removal was less than 40 %. So the influent concentration of the black liquor in wet oxidation treatment should not be too large, the influent concentration of 2500 mg/L to 4000 mg/L is appropriate.