Advanced Materials Research Vols. 610-613

Abstract: Based on the water quality investigation data in December of 2010, the water environment quality of Jilongshan sea area in Zhanjiang in winter was assessed using single water quality parameter model, integrated water quality index model, organic pollution index model and eutrophication assessment model. The results show that the key pollutants are dissolved inorganic nitrogen (DIN) and chemical oxygen demand (CODmn), with their average concentrations of 1.39 and 3.74mg/L, respectively. And the averages of their single parameter pollution index are 3.48 and 0.93. Jilongshan sea area is seriously polluted by DIN. None of the sampling stations are able to meet the third-rate seawater standard in the sea area. From the evaluation results, the N/P ratio is higher than Redfield ratio. DIN is the most important contribution factor to the eutrophication. The averages of single parameter pollution index, integrated water quality index, organic pollution index and eutrophication index are 1.09, 2.58, 3.78 and 22.5, respectively. Most parts of Jilongshan sea area are polluted moderately. According to the evaluation mode of organic pollution and eutrophication index, the organic pollution degree reaches the forth level and the eutrophication degree in Jilongshan sea area is very serious.

Abstract: This paper analyzed various water pollutants, their emissions and emissions concentration depending on the Environmental Impact Assessment (EIA) of Technical reform in an electrical company. It evaluated the capacity of implementing technical reform in this company’s wastewater treatment station and the feasibility of stability up to the discharge standard in order to find the reason Ni, one of the first class of pollutants, which was discharged by the outlets of plating factory sewage treatment facilities exceeded the standard in GB8978-1996 “Integrated Wastewater Discharge Standard”. In addition, this paper proposed a reasonable treatment program which made the drainage of the wastewater treatment station reaching the standard requirements. From this paper, it reflected the important role the environmental impact assessment played to provide a technical guidance for environmental management in the technical reform project.

Abstract: River water quality simulation plays an important role in the fields of basin pollution control, water environment planning as well as water quality prediction and evaluation, providing effective and scientific support for pollution total amount control and water quality environmental management. With the development of the river water pollution simulation technology, many new methods and means have been established. This paper summarized the results of river water quality simulation researches by domestic and abroad, introduced the theory, the establishing process of water quality model, commonly used water quality model systems, simulation software, and the practical application of the water quality simulation technology. This paper illustrated the future developing trend of the river pollution simulation, providing reference for the research and the management personnel in the field.

Abstract: Although reclamation can increase land area, it decreases natural shoreline, coastal wetland and fishery resources. It remains a contradiction between the utilization of reclamation and protection of marine resources. The effective method to judge reclamation impact on marine resources is of great importance. Based on results of three rounds expert investigation, this paper established a system to make the judgement. Two steps were taken: using Delphi method to obtain the weight of qualitative and quantitive evaluation indicators, using SPSS statistical software to get reliability test results, which show that expert opinions are in well agreement. The indicator weights were finally gived.

Abstract: Based on death radius classification method for major hazard installation, this assay utilize “the principle of maximum danger” and “the principle of probability summation” as the principles to calculate property losses and casualties, and use the Classification Standards of Major Hazard Installation (exposure draft) as the standard, to classify the major hazard installation of dangerous chemicals. Thus, it could take property losses and casualties of surrounding environment into consideration, which ensure the considered factors of major hazard installation classification of dangerous chemicals more comprehensive, and ensure the classification results more closely with the real situation. The research result of this essay would provide certain reference value on major hazard installation assessment and classification of dangerous chemicals.

Abstract: Dongchang Lake is a rare man-made lake in northern China located in western Shandong Province. It comprises of 6 sectional lakes and its total area is about 4.2 km2. But in these years, water pollution, especially from hotels surrounding Dongchang Lakes, had damaged people’s usual life. For solving this problem, we designed relative questionnaire and do investigation respectively in 2010 and 2011. Based on the statistical data and the first national census of pollution sources of urban life source production and emission coefficient manual, the amount of produced and emission about sewage and Chemical Oxygen Demand, Total Phosphorus, Total Nitrogen, Ammonia Nitrogen from hotels were calculated to provide better service for people.

Abstract: According to many uncertain problems of current water quality comprehensive assessment, a Bayesian model for water quality evaluation was established based on the basic principles of Bayesian formula. Select monthly monitoring data for 5 parameters at 15 different monitoring sections, generated from July 2006 to June 2007 and use Chinese GB3838-2002 as evaluation standards to analyze the water quality grade in this study. The annual evaluation results show that the water quality of ChangLe River mainly belongs to Ⅲ and Ⅳ grade. The monthly water quality has a certain relation with rainfall. The Bayesian method has the characteristic of more integrated, suitable for both large and small samples, simple calculation and easily to be used widely.

Abstract: A square is an important multi-functional public space on campus, which can be used as a venue for traffic, gathering, recreational activities and cultural events, and thus the thermal environment of the campus square will directly influence the overall environmental quality of campus. This paper studies a campus square in the summer-hot and winter-cold region, selects typical positions to conduct actual measurement of parameters, such as temperature, relative humidity, wind speed and solar radiation, which indicate the thermal environment. Based on data collection and analysis, it is concluded that the thermal environment of the campus square is affected by microclimate factors such as the square underlying surface properties, vegetation and building and road orientations. This paper is aimed at exploring the regularity of the correlation between microclimate factors and thermal environment in order to facilitate the improvement of the thermal environment of the campus square, make it more comfortable and provide ideas for the landscape and architectural environment design.

Abstract: This paper was seleced Qingyuan as a case study, in order to analyze Hg, As, Cu, Zn, Pb, Cd, Ni, Cr concentrations of the soil samples. And used the Hakanson potential ecological risk index method to assess the potential ecological risks of concentrations of heavy metals in soil. The results shows that the average concentration of Hg, As, Cu, Zn, Pb, Cd, Ni, Cr in soil is 6.45, 0.26, 20.25, 119.11, 181.67, 189.22, 0.27, 32.92, 201.35 mg•kg-1 respectively. The rank by severity of ecological risk as Hg > Cu > Pb > As > Cr > Cd > Ni > Zn, based on their single-element indexes. Heavy metals in several samples of the soil have posed a serious threat on the ecosystem.

Abstract: Arsenic is a carcinogen to both humans and animals. Thirteen typical surface sediment samples were taken at Tanghe and Daihe in Qinhuangdao, April, 2011. Hydride generation atomic fluorescence spectrometry (HG-AFS) was used to analyze arsenic (As) concentration. The correlations of sediment arsenic and sediment organic matter (SOM), pH, river water arsenic were discussed. Index of geoaccumulation (Igeo) and potential ecological risk index were cited to assess the arsenic pollution level and its potential ecological risk. The results show that, arsenic in river water sediment, estuary sediment and coast sediment of Daihe are lower than the average level of other Chinese rivers. Arsenic Igeo of these sediments are cleanliness. However, Arsenic concentration in the sampling points of Tanghe is higher than the average level of domestic rivers except river water sampling points. Their Igeo are light pollution. The potential ecological risk index of the two rivers are slight ecological harm. Arsenic concentration of different sampling points in the two rivers distributes as: estuary sediment As>coast sediment As> river water sediment As. The correlation among sediment arsenic, water arsenic, SOM and sediment pH are: 1) Arsenic in sediment has a extremely significant positive correlation with that in water at p<0.01; 2) Sediment arsenic shows a significant positive correlation with SOM at p<0.05; 3) However, there is a negative correlation between sediment pH and sediment arsenic.