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Water Pollution sources dissection has important guiding significance for drinking water sources protection. Focused on QingShuiHai valley, the research investigated water quality by uniform distribution sampling in the area in 2007∼2008, and analyzed pollution sources characteristics. The results showed that the concentration of Total Nitrogen (TN)(0.15–7.99 mg L−1) was 0.3 ∼ 15.98 times higher than...
At present, the adoption method of Luan Mining is mainly by the well working industry, this method destroys the land and the ecological environment in different degrees. This thesis aims to analyze and research the methods and processes of reclamation technology of all types of destruction according to the form and characteristics of land damage by the coal mining, then propose the requirements, standards...
To remove heavy metal ions in waste water,the adsorption process of Mercury ion from aqueous solution by Konjac Glucomannan based Resin(KGR) was investigated. The adsorption capacity is found to be dependent on the pH of the solution, the effects of adsorption time, the dosage of different adsorbents, the initial concentration of heavy metal ion and temperature. Moreover, the adsorption capacity increases...
Taking the Daniel Fong and Yulin Village in Beijing as cases to study. the quality characteristics of rainwater runoff and the pollution situation were obtained by monitoring the rainwater samples from the roof and road in different rainfall intensity. The emphasis was placed on the characteristics of four heavy metals (Zn, Cu, Cr and Cd) over time, as well as the relationship between the Concentration...
Principal component analytic method is a statistical analysis method, which transforms the multi objectives into a minority of overall targets according to dimension reduction thought. This article applied this method to conduct the analytical study of water quality monitoring data in XiaSha region. The result indicated: The latter three principal components have already synthesized above 90% factor...
This paper studied the efficiency of the oilfield water injection system by using the water injection system theory, fluid mechanics theory, and graph theory and optimization design technology. According to the actual conditions, the paper established the mathematical model of Wuliwan oilfield pipe network. Based on the actual data of production, energy distribution of oilfield water injection system...
The Source Region of Yellow River locates in the northeast of Qinghai-Tibet Plateau with an area of 131419 km2, which is especially sensitive to global warming because of its high elevation and cold environment. To assess the land use and land cover changes from 1975 to 2005, we employed remote sensing and GIS technology to monitor the area of land use and land cover at four times (1975, 1990, 2000,...
Water security is an important component part of regional security problem. Regional water security problem which is characterized by the shortage and pollution of water resource, the increased soil erosion and floods is becoming a vital restraint in the sustainable development of regional society, economy and ecological environment. The major water security problem of Linyi City is analyzed systematically...
For reasons of temporal and spatial changes and strong randomness etc, the quantitative simulation for water environment pollution in plain lake basin is a much difficult work all the time. Simulation model makers are required to comprehensively master, as well as synthesize many methods or techniques to describe the natural and social complex systems. In this paper, Lake Chao was taken for example,...
Hebei Province is facing a long-term water shortage problems. Over-exploitation of water resources caused great ecological and environmental problems. This situation restricted social and economic sustainable development of the province. Under the constraints of water resources, the industrial structure had been adjusted, resulting in maintaining sustainable social and economic development while saving...
With the development of recycled aggregated concrete researches, and the exhausting of construction materials, it's safe to predict that wider application of recycled aggregated to engineering construction is an inevitable trend. Here a practical problem is presented whether the concrete can be recycled again when the structure constructed by recycled aggregates needs to be demolished or maintained...
Sandy prairie over-grazing and tourism passengers directly to forage, soil was trampled damages the soil compaction, the original structure and some physical properties, causing damage to vegetation growth environment, cannot normal growth, grassland phenomenon also increasingly serious soil erosion, so through investigation the soil quality, tourist traffic control etc. In order to research the tourism...
In order to know the environmental capacity, prevent the continual deterioration of the water quality of Fen River, and promote the harmonious development of economy and aquatic environment, the formula for calculating water environmental capacity of each reach was derived from generalizing the outfall based on the 1-D steady state water quality model. In accordance with the existing specials of water...
In order to implement the remote sensing applied in land use research, we use a series of remote sensing image processing commercial software to extract land use/land cover information. The article are based on compare and analyze the ability of identify information of land use and land cover between two software (Erdas imagine 8.5 and ENVI4.1) which using the same classification method in a imagine...
Water environment problems and countermeasures were discussed of petrochemical corporation according to water and wastewater systems of a enterprise. Water environment problems were analysed such as the lack of step water recycling among the process units, uncompletely separate treatment of different concentration wastewater, the shortage of pretreatment and advanced treatment, low water recycle rate,...
Revised Universal Soil Loss Equation (RUSLE) associated with GIS/RS technology has been widely applied to estimate regional soil loss around the world. However, In the Buyuan river basin, the largest tributary within the Upper Mekong, little work has been conducted to assess the situation of soil erosion, though it plays considerable roles for sediment supply to the Lower Mekong after cascade dams...
One practical method to increase the density of Habrotrocha sp., which is a kind of useful bdelloid rotifer in the wastewater biological treatment system, is to cultivate the metazoa in certain numbers and then put it into the treatment system. Therefore, it is necessary to develop a method which can efficiently cultivate Habrotrocha sp‥ In this paper, the optimization of culture condition for Habrotrocha...
Theory and application of water and wastewater network optimization was researched borrowing ideas from water pinch technology. A new water system optimization method was advanced and a water system optimization model was built. The new water system optimization method was based on mass transfer model of water pinch technology, every operation used matched water of circle water and fresh water in...
The sediment core DS of Higher-up Lake has been determined by using the method of 137Cs & 241Am dating. Both results were unanimous. Results showed that two peaks of 16 cm and 14 cm were observed in 1963 and 1974, respectively. Sedimentation rates of the core were 0.34 cm a−1 and 0.39 cm a−1, respectively. The results obtained from the combine of the two methods were reliable.
Water conservation is the important service function of ecosystem. To seek the coordinated growth of the economical development and environmental protection, the delimitation of degree grading and zoning of the water conservation in different regions has become an important precondition for the development of local economy. Based on the analysis and other functions of Arcgis softwares, the data is...
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