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With the rapid growth of the secondary equipment promotion and substation unattended substation, the traditional protection inspection and inspection work problems and difficulties are gradually emerging, which gradually changes to the state maintenance overhaul. In this paper, based on the trust system, the secondary equipment state evaluation scheme is designed, and the evaluation results provide...
The emission from cooking was a significant contributor to atmosphere pollution. The organic acid and PAHs in the atmosphere coming from Sichuan cooking fumes are harmful to the human health and the physical objects. Sichuan cooking fumes in this article are systematically divided into three categories. Experimental study indicated that Sichuan cooking fumes contained abundant monocarboxylic acids...
A method based on cloud point extraction(CPE) was developed for the determination of 2,4-dichlorophenol in environmental water samples using high-performance liquid chromatography separation and ultraviolet (HPLC-UV) detection. The non-ionic surfactant Triton X-100 was chosen as extraction solvent. The parameters and affecting factors of extraction efficiency, such as concentration of Triton X-100...
Total suspended particulates (TSP) were collected from March 16, 2009 to March 20, 2009 at an underground garage in Chengdu University of Information Technology. Concentrations of TSP and its saturated hydrocarbons and other molecular markers were analyzed to characterize the pollution of vehicles in underground garage. Concentrations of TSP were higher during the daytime(182.4-226.6 μg m-3) than...
A new flow-injection chemiluminescence method for the determination of trace amounts of sulfide was developed. It is based on the enhancement of sulfide on the chemiluminescence reaction of calcein with potassium ferricyanide. The relationship between the increased chemiluminescence intensity and the concentration of sulfide is linear in the range of 3.0 × 10-8 - 2.0 × 10-6g/ml. The detection limit...
Total suspended particulate (TSP) is the one of the major urban air pollutants in China which endangered the human health. Its pollution extent and characteristics attracted much attention. Study of many urban air pollution sources were reported such as coal-fired emissions, soil dust, industrial dust, vehicle exhausts, etc., but few study focus on an important source-variation exhausts. In this study,...
A bioflocculant-producing bacterium, named B-28, was isolated from contaminative soils by gas oil wastewater and identified as Bacillus sp. according to its morphological, physiological, biochemical properties and the analysis of its 16S rDNA gene sequence. The effects of bioflocculant dosage on flocculating activity in kaolin suspension showed that more than 80% of flocculant activity was observed...
Catalytic degradation of simulated 2,4-dichlorophenol wastewater are investigated by using self-synthesized Fe/activated carbon (AC) catalysts and hydrogen peroxide oxidation agent. Effects of the most relevant operating conditions(pH, catalysts concentration, 2,4-dichlorophenol concentration, H2O2 concentration and reaction temperature) were discussed. The results indicate that the degradation rate...
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