Advanced Materials Research Vols. 919-921

Abstract: The paper presents the results of scientific work dedicated to the removal of ammonia nitrogen from wastewater. On the basis of the results of research were built characteristics of the process of biological treatment with nitrification and denitrification of. The paper presents charts showing the operation of the cleaning system with nitrifying bacteria heterotrophs.

Abstract: Using microwave-ferrous sulfate modified activated carbon adsorption manner to remove the high concentration of phosphorus in wastewater. The power of microwavethe concentration of ferrous sulfate and reaction time on phosphorus removal were studied. When the power of microwave was 425W,the concentration of ferrous sulfate was 0.1mol/L,reaction time was 50 min,the removal rate of TP reaches 95.67%,the treated effluent TP can be dropped to 0.48mg/L,the TP can reaches the first effluent standard of TP in the comprehensive wastewater discharge standard (GB8978-1996).Microwave-ferrous sulfate modified activated carbon is adapted to treat high concentration phosphorus in the wastewater.

Abstract: The paper presents the results of research studies to determine the degree of influence of reinforced material on the purification process wastewater from phosphates and organic contaminants. The paper presents the results of mathematical description of the laws of the biological purification. Obtained activation coefficient. Shows the effect of reinforced material for phosphate removal from wastewater. Shows the effect of reinforced material on sludge dose and sludge index.

Abstract: In order to study the influence factors of complex three-dimensional electrode polarity to treat phenol wastewater .Set the mixed phenol wastewater as the research object, by the test of static, adopt complex three-ensional electrode polarity to phenol wastewater. When the wastewater is 10 L,quality concentration is 300 mg/L, the pH value is 3.0, the reaction time is 90 min, electrolytic voltage is 15V, plate spacing is 10 cm, Na₂SO₄ electrolyte additive concentration is 1 g/L, Fe²⁺ additive concentration is 0.6 mmol/L, aeration intensity is 0.2 m³/h, removal rate of phenol and COD reached 80.99% and 80.99% respectively . The experiments results show that the pH value, reaction time, electrolytic voltage, plate spacing and aeration intensity has a significant effects on phenol wastewater through complex three-dimensional electrode polarity treatment.

Abstract: OBJECTIVE:To provide reference for the eco-cluster and low-carbon technology innovation of biomedicine industry in China.METHODS:In the context of the construction of ecological civilization, To analyze the status and existing problems of Chinese bio-pharmaceutical industry cluster and to explore viable industry gathering mode and low-carbon technologies innovative ways.CONCLUSIONS:Ecological industry is the fundamental way out of structure optimization and upgrading of China’s bio pharmaceutical industry. The development of Chinese bio-pharmaceutical industry must take the path of ecological gather and the key step lies in the low carbon technology innovation of biopharmaceutical.

Abstract: The activated photocatalysts are urgently needed for the application of photocatalytic techniques in environmental pollutant removal. A POM - based photocatalyst with the chemical formula of (4, 4’-H₂bpy)( 4, 4’-Hbpy)₂[SiW₁₂O₄₀]·4H₂O (1) has been hydrothermally synthesized and structurally characterized by the elemental analysis, and single crystal X-ray diffraction. Compound 1 consists of 4, 4’-bipyridine unit and keggin type polyoxometalates [SiW₁₂O₄₀]^4-. There are hydrogen-bonding interactions between polyoxometalates, 4, 4’-bipyridine and water molecules in 1, forming a new 3-D networks. The degradation of rhodamine B (RhB) under UV-vis irradiation with 1 as the heterogeneous photocatalyst has been investigated, showing a good photocatalytic property of 1 for RhB degradation.

Abstract: This paper studies the introduction of the system dynamics method evaluation process among eco-tourism carrying capacity, improve the eco-tourism carrying capacity assessment methods and systems, eco-tourism management departments to make an accurate assessment of eco-tourism system supports eco-tourism activities capacity thresholds and event risk, according to the carrying capacity of eco-tourism environment to determine the strength of eco-tourism activities, protect the environment and ensure sustainable development of eco-tourism.

Abstract: In this paper, soil microbial characteristic of Elsholtzia harchowensis in copper mine were reported. The results indicated that metal element contents of Elsholtzia harchowensis were: Cu>Zn>Pb>Cd. There were significant correlations in Cu contents between Elsholtzia harchowensis and soil in copper mined tailings region. The Elsholtzia harchowensis possessed obviously different soil microbial features. The intensiver in microbial basal respiration strength, and higher microbial ecophysiological parameters, but lower in soil microbial biomass. The results showed that soil microbial community structure was obviously changed in the Elsholtzia harchowensis system, and much more consumed rapidly carbon sources, but the lower in the ratio of utilization compared with the control test.

Abstract: Seasonal performances of three vertical2flowconstructedwetlands (VFCWs) filled with different packing materials for piggery wastewater treatment was investigated. Results showed that there were no some significant seasonal differences in the COD removal efficiency among three types of VFCWs. Biodegradation of organic matter in all three VFCWs were found following the first order rate model. The N removal efficiencies in conventional VFCWs indifferent seasons constantly maintained at 52%. However, N removal efficiencies were found fluctuating over seasons in VFCWs filled with zeolite or zeolite cinder, 89.8% and 93.4% in autumn, 64.2% and 73.5% in winter, and around 80% in spring and summer, respectively. Total nitrogen (TN) removal efficiencies of all VFCWs in winter were considerably lower than those in the other seasons due to relatively weaker processes of nitrification-denitrification. The nitrification activity in VFCWs filled with zeolite2cinder was the highest among all of VFCWs, while the denitrification activity in VFCWs filled with zeolite or zeolite-cinder was more in tensive than that in the conventional VFCWs, agreeing with the TN removal efficiencies in three VFCWs. As packing material, zeolite is able to accelerate the process of denitrification as well as TN removal efficiencies of VFCWs.

Abstract: Engineering hydrology and hydrologic calculation is a core professional course of agricultural hydrologic engineering, in order to realize the implementation of quality education in higher school teaching purposes, with the teaching practice of engineering hydrology and hydrologic calculation, puts forward the progressive teaching mode of engineering hydrology and hydrologic calculation, and applied in teaching activities. The conception of progressive teaching mode and practice was summarized from four aspects of progressive teaching objective, teaching content, gradual progressive teaching method, and progressive ability.