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Aiming at the fact that the hydrochemistry environment of shallow groundwater becomes worse and worse in the past ten years in LuoYang. On the basis of large amounts of test and observation datum, the paper analyze the cause form the lithology of aquifer, the recharge, discharge of groundwater and human engineer activity and make the following conclusion: the purification capacity on many contaminations...
Groundwater was monitored to investigate its hydrochemical variation and possible influencing factors from April, 2007 to May, 2009 at the inlet (D1) and outlet (S2) of Qingmuguan subterranean river in Chongqing, China. The response of the subterranean river discharge to rainfall events was very fast and dramatic, as the water level rising suddenly and dropping sharply with rainfall amount in the...
The utilization of rainwater is essential to improve ecological environment of sub-district, and is one of main approaches to achieve sustainable water resources.Taking rainwater collection and utilization of Beifang Garden district as an example in Fuxin city of northeast China, water quality analysis and water quantity balance calculations are completed, also the feasibility and necessity of rainwater...
Analysed the research of groundwater vulnerability assessment worldwide actuality, considered the groundwater system vulnerability should be included in groundwater systems anti-fouling and groundwater system vulnerability.Based on the coupled technique of ANN-GIS, a "Three Chart" method was proposed, the maps of distribution of antipollution and the facility-pollution are compounded, and...
Purification situation of different media to the corresponding polluted components in the downstream of Yitong River in Changchun is studied in this paper. The polluted water samples and different media which fit the dualistic structure of Yitong River are collected in the experiment. The soil columns are used in experiment to simulate the purification capability under nature conditions. According...
The water system of Fen River in Shanxi province has upstream, midstream and downstream three sections, which are separately located in Jingyou, Jiexiu, Xiaodian, Hongtong, Linfen and Hejin, six sampling points are disposed there for the sake of collecting the samples of the filtered water and suspended matter, and measuring heavy metal contents. The measurement results show that heavy metal exist...
Baoding city locates on northwestward of the North China Plain, middle section of the Taihang Mountain which is a typical city on groundwater developing in China. Authors summarize the history of groundwater use and contributions of groundwater, analyze environmental geological issues caused by over-exploitation of urban groundwater which are similar with other water-shortage cities. Main environmental...
Non-point source pollution is one of the major problems caused by agricultural activities especially from planting cultivation. This paper describes the application of the Soil and Water Assessment Tool (SWAT) model in agricultural non-point source pollution of the Laohahe River watershed, located in northeast China. This initial hydrologic modeling analysis will facilitate future applications of...
Taking the observed data of water and sediment of two tidal cycles during middle tide at 4# station of Dongdagang as an example, the thesis reveals the spectral relation and phase relation between the wavelet analysis signals in five layers about flow velocity, water depth, wind speed and sediment concentration in various layers in the tidal channel where 4# station is located using wavelet analysis...
This is a study on the decontamination function of two kinds of aquatic plants towards Pb2+, cress and acorus. The results show: both cress and acorus have the ability of removing heavy metal Pb2+, while acorus shows higher decontamination ability, up to 91%. Acorus shows higher accumulation rate of Pb2+ compared to cress and its underground (root) accumulation rate is significantly higher than that...
The main methods to collect feces of livestock and poultry were briefly described. A new method using vacuum pipeline networks to collect feces of livestock and poultry was introduced. An example was also provided to amplify its technical scheme. The main methods of treatment and resource recovery of feces of livestock and poultry were reviewed. A new process of resource recovery of feces of livestock...
Denitrifying phosphorus removal is a kind of new efficient technology, and can alleviate the contradictions of urban sewage with low-carbon sources. This research took wastewater from a sewage treatment plant in Beijing as study object. Results showed that there was obvious phenomenon of denitrifying phosphorus removal and this phenomenon was gradually strengthened in A2/O process.
Inhibitory effects of macrophytes on the growth of algal community in Landscape water of Hefei city were evaluated. In the coexistence culture system of different macrophytes species (Ceratopteris siliquosa, Echinodorus opticus, Elodea densa, Limnophila aquatica, Myriophyllum aquaticum, Najas Guadalupesis, Nesaea crassicaulis and Rotala wallichiii) and nature algal community, only the macrophytes...
Adolescent idiopathic scoliosis (AIS) is present in 2 to 4 percent of children between 10 and 16 years of age, which seriously affects the mental and physical health of young people while is defined as a lateral curvature of the spine greater than 10 degrees accompanied by vertebral rotation. The main risk factors for curve progression are a large curve magnitude, skeletal immaturity and female gender...
Polymer Si-Fe (PSF) coagulant was prepared by co-polymerization. The oxidization of PSF was investigated by using jar test for humic acid (HA) solution sample and measuring oxidization-reduction potential (ORP) compared with that of polyferric aluminum (PFA). The results show that PSF has higher ORP value than PFA, with the difference of 420mV. PSF is an oxidization coagulant that possibly changes...
As China's economy develops and the governments at all levels attach great importance to water supply and sanitation. The problem of insufficient supply has gradually been eased; however, the problem of imbalance has not been obviously solved. The provincial statistical data in 2008 Health Statistics Yearbook shows that there is still a large gap between provinces in water supply and sanitation in...
ET-based water resource management mainly includes ET-based water resource management and ET-based monitoring of water resources. ET-based (Evapotranspiration) water resources allocation determines regional consumable water through regional water balance analysis; in the process of regional water resources allocation, water consumption is taken as the main allocation object, and through the strict...
Since the 1980s, Chinese water environment has got worse and worse, and water pollution extended from local pollution to total watershed pollution. From the Ninth Five-Year Plan, the government recognized the seriousness of water pollution, and put the core of the prevention and cure of water pollution in Three Rivers and Three Lakes, e.i. Huaihe River, Haihe River, Liaohe River, Taihu Lake, Chaohu...
In the Yanqing area, Beijing, China agriculture water use and soil erosion are significantly serious due to large-scale agricultural irrigation; It has been the most prominent issue of agricultural irrigation for water resources protection, mainly because irrigation water use utilization efficiency is very low. The key issue of water-saving agriculture is to improve the utilization of irrigation....
Based on the researches of water use efficiency in China and other countries, a water resource utilization efficiency assessment index system is proposed, which includes six kinds such as water use per 10,000 Yuan of GDP, removal variability of agriculture water resources utilization efficiency, per 10,000 Yuan of added industrial output value etc. By the cluster analysis of indicator data, it adopted...
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