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In recent years, researchers pay increasingly attention on river ecological restoration at home and abroad. According to the practical situation of Tianjin Airport Economic Park river water environment and inter-external experiences, several ecological techniques, such as phytoremediation, artificial aeration and ecological riverbank, were adopted to river ecological restoration. And related operation...
The study on groundwater vulnerability is an effective technical measure for rational development and protection of groundwater resource. In the paper, according to the hydrogeology conditions of the Lincang Basin in Yunnan Province, USEPA's DRASTIC method was applied to evaluate the groundwater vulnerability of this area with the consideration of depth to the water table, Net recharge, aquifer material,...
The paper presents the principle and calculation process of the principal component analysis which is a useful method of water quality assessment. Eight indicators include dissolved oxygen, permanganate index, BOD, ammonia nitrogen, copper, zinc, volatile phenol, oil in 20 monitoring sections of Ningbo urban river were analyzed by using principal component analysis. Three factors with 86.67% of accumulated...
As the main portion of urban catchment, road is also a major non-point pollution source of receiving water body. The road runoff pollution has attracted wide attention. The paper makes a study on six rainfall road runoff from 3 different types of roads, analyses the status of road runoff pollution, the surface runoff pollution load and correlation between road runoff pollutants. The result shows that...
As scientific references of evaluation on the groundwater contamination, natural background levels about chemical indexes TFe and Mn of shallow groundwater in Pearl River Delta was derived with SPSS statistical software, and its spatial distribution regularities and the controlling factor were discussed. The results show that the regularity in Pearl River Delta is primarily controlled by topography,...
Fuzzy mathematics method is used to evaluate the groundwater quality in Yang village. The groundwater quality of 18 villages belongs to V level water (GB/T14848-9 Quality standard for ground water) in the study area, where water pollution is very serious. Polluted area mainly includes the sandy soil region in northeast Yang village and east bank villages in western Beijing-Hangzhou Canal. Yinma village...
Lake water is an essential renewable resource for mankind and the environment and it is important for civil drink water supply. Shitoukoumen reservoir, one of the most important drink water supplies, is taken as examples to assess the water quality by multi-temporal Landsat TM/ETM data. The multiple scattering model within the water is applied to simulate the radiative transfer for retrieval of the...
Numerous monitoring data and water quality index obtained from 76 regional shallow-layer monitoring wells are simplified and classified by applying the multivariate statistical methods such as factor and cluster analysis to search for the interrelation between the water quality parameters, factors representing the characteristics as well as possible pollution sources of groundwater quality in Pingtung...
Water quality monitoring is a prerequisite for water pollution control. The rapid development of remote sensing technology will provide a new technical support. In this paper, with the study of the Weihe River in Shaanxi Province, RWQMS (Remote-sensing Water Quality Monitoring System V1.0) is designed and implemented based on SPOT-5 remote-sensing image and the system structure and key technologies...
In recent years, the deterioration, eutrophication and other water pollution problems are increasingly serious in Taihu lake, which have become new constraints of regional development. Based on GIS, most applications of Taihu lake relevant research were mainly emphasized on the traditional GIS data management and analysis, which lacked three-dimensional water pollution dynamic process simulation....
By the analysis of the present water supply and extraction, hydrogeological condition, groundwater quality and contaminant site etc. this paper illustrates that the present management and protection of the Dawu water site is not well, the chemical contaminant pollution is acute especially. Then, analyzes the present groundwater problem and pollution reasons, brings up an effective protection measures...
This paper focuses on piecewise linear growth model of water quality about the river. The experiment was performed on South Sewage Discharge River of a certain Coastal City, in China. Physical, chemical parameters such as water temperature (T), turbidity (Tur) were measured over a one-year period including dry period, level period (May), wet period, level period (Oct.). Based on multilevel models,...
To investigate the characteristics of migration and distribution of phenanthrine plays an important role in the control of polynuclear aromatic hydrocarbons (PAHs) contamination. This experiment simulate the migration and distribution of phenanthrine in soil-groundwater by using indoor dynamic soil column test and hydrogeological theories so as to understand the condition and rules of phenanthrine...
This paper proposes a novel semi-supervised regression model with co-training algorithm based on support vector machines, which retrieves water quality variables from SPOT5 remote sensing data. Nonlinear relationship between water quality variables and SPOT5 spectrum are described by two support vector regression (SVR) models. Semi-supervised co-training algorithm for the two SVR models is established...
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...
The remote sensing technology could identify the surface features by getting their reflectance spectral characteristics. Because of the different surface properties, nature and content of suspended solids, the characteristics of water bottom and depth of different water bodies, the reflectance spectral characteristics which were received from the transducer showed differences between each other. The...
In order to represent fuzzy concept in water quality assessment, the Nemerow Pollution Index and Vague sets similarity measure formula were integrated together, consequently a new water quality comprehensive assessment model was formed. The new formed model can well express fuzzy concept in water quality assessment. Choosing water quality inspection data at Chengdu city's Fu Nan River as analysis...
The occurrence of sudden water pollution accident threatens water quality as well as human health and social stabilization. A typical water pollution accident emergency warning system for Chu River downstream basin was developed to aid responsible authorities, water suppliers and emergency responders making impactful rescue measures at the first time in order to reduce influence and loss of the accident...
Non linear flow augmentation model has been presented here. The model is built on an analogy of load flow problem in an interconnected power system; with a proven convexity under the various constraints. It is capable of incorporating water quality of the augmentation source, and changes in the water quality in river base flow due to augmentation. Further, the mathematical model has been used to pretense...
We present a fleet of autonomous Robot Sensor Boats (RSBs) developed for lake and river fresh water quality assessment and controlled by our Multilevel Autonomy Robot Telesupervision Architecture (MARTA). The RSBs are low cost, highly maneuverable, shallow draft sensor boats, developed as part of the Sensor Web program supported under the Advanced Information Systems Technology program of NASA's Earth...
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