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The principium of Denitrifying Phosphate Removal Bacteria was summarized in this article. study on influential factors of the Denitrifying Phosphate Removal such as carbon source, temperature, MLSS and pH, Which can provide reference and foundation for the denitrifying phosphorous removal process.
An investigation of deformation properties of square concrete columns confined with CFRP sheets at low temperatures were carried out experimentally. The experimental results showed that the CFRP sheets can increase the bearing and deformation capacity of concrete columns effectively at low temperatures. And the experimental curves show that area of plastic deformation increases, the curves become...
To research the resistance temperature characteristic of large deformation sensor element produced by the conductive composite materials based on rubber. A series of tests on resistance temperature characteristic of carbon fiber filled conductive silicone rubber are carried out. the results shows that it appears transition temperature during heating-cooling cycle range from 0D to 40D. The composite...
A absorbent was chose to absorb CS2 from industrial activated carbon (AC), 13X, NaY, ZSM-5. The results indicate that the adsorption of CS2 of the industrial activated carbon is better than the others. The modification of industrial activated carbon (AC) has been used in laboratory in order to make full use of high concentration CO comprehensively. AC was impregnated with Cu(Ac)2, Zn(Ac)2, Mn(Ac)2...
Soil respiration rates were measured during 2006 to 2009 using a soil respiration chamber connected to a portable photosynthesis system (CI-301). Vegetation succession on Hailuogou deglaciered area is serially divided into 7 stages: (1) herbs community, (2) Salix-Populus sapling forest, (3) Populus young forest, (4)deciduous and broad-leaved forest, (5) coniferous and broad-leaved mixed forest,(6)...
The methods and the device of carbon nanotubes which are were prepared by DC -PCVD are described in the paper. The growth characteristics of carbon nanotubes is researched within the substrate temperature from 500 °C to 900 °C when the range of gas is from 60 torr to 90 torr. It is appropriate when the temperature is 700°C and the pressure is 75torr. The growth characteristics of carbon nanotubes...
Nitrogen-doped amorphous carbon thin films have been prepared by thermal chemical vapor deposition (CVD) technique at different temperature. The preparation involved argon, camphor and nitrogen as carrier gas, carbon source and dopant respectively. The effects of nitrogen incorporation in the amorphous carbon thin film on electrical and optical properties was characterized by using Advantest R6243...
In this paper the reforming of CH4 with CO2 was conducted in the integrated microwave-assisted heating system, with the wood-derived activated carbon as catalyst. At first, the reactant gases conversions of CH4 decomposition, CH4/CO2 reforming and CO2 gasification were compared, and the temperature rising characteristic of the activated carbon was tested. And also the influence of operating parameters,...
With the wide use of reverse osmosis technology in power plants, many produce water distribution networks of first-order reverse osmosis of seawater have severe corrosion, which is a threat for the normal and efficient operation of power plant. This paper studied the effect of corrosion factors such as dissolved oxygen, chloride ion, flow velocity, temperature on first-order reverse osmosis corrosion...
Chemical oxygen demand (COD) have been the crucially problematic parameters in refinery wastewater treatment. This study was conducted to investigate the COD removal effectiveness in refinery wastewater with the activated pretreatment petroleum coke (APPC) prepared by combination of chemical activation with KOH solution and physical activation with calcination at lower temperatures. Adsorption experiments...
Cr(VI) has posed great threat on environmental safety and human health, thus the remediation of Cr(VI) pollution is of considerable importance. The adsorption of Cr(VI) from aquatic solution using activated carbon was studied in this paper. The Cr(VI) sorption was relative to pH, contact time, initial content of solution, adsorbent dose and temperature. The maximum removal efficiencies of Cr(VI) were...
Biogas yields and methane productivity were studied at different temperatures (15°C, 20°C, 25°C, 30°C and 35°C) by the way of anaerobic fermentation experiment which takes wine manure as biogas fermentation raw material, and take the sediment from rural methane fermentation as inoculate matter. The results indicated that temperature affected the material consumption time, the higher temperature, the...
The low-cost activated carbon was prepared from sugarcane bagasse, an agricultural waste material, by chemical activation with different reagents. Orthogonal experimental design was applied to study the influence of activation temperature, activation time and chemical ratio of reagents to sugarcane bagasse on the chemical activation process of sugarcane bagasse. The optimal activated carbon was obtained...
A non-asbestos semi-metallic stainless steel/carbon fiber reinforced PEEK-based friction material was developed and applied in Tunnel Boring Machine(TBM) driven clutch friction plate. The uniform design method of 5 factors and 27 levels was used to design and optimize the match composition. The friction plates were manufactured by dry-processing procedure, comprising mixing, pre-heating, cold pressing,...
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