Analysis of Sustainable Deep Groundwater Development Scenarios in Huantai County

2014 ◽  
Vol 955-959 ◽  
pp. 3040-3044
Author(s):  
Shi Lei Chen ◽  
Xue Yuan Li ◽  
Kai Bian ◽  
Ying Wang Zhao ◽  
Bo Li
Keyword(s):  
Groundwater Level ◽  
Groundwater Resources ◽  
Three Dimensional ◽  
Status Quo ◽  
Domestic Water ◽  
Deep Groundwater ◽  
Groundwater Exploitation ◽  
Development Scenarios ◽  
The Status ◽  
Exploitation Status

On the basis of the geology and hydrogeology, a three-dimensional numerical groundwater model in the study area was developed to evaluate the deep groundwater resources and avoid the groundwater level declining. According to the long-term water supply plan, water resources characteristics and exploitation status quo of Huantai county, three kinds of groundwater utilization scheme had been designed. The best sustainable groundwater exploitation scheme is determined by using the numerical model to simulate three kinds of mining schemes and analyze the corresponding groundwater flow field. The result shows that maintaining the status quo mining conditions will make the groundwater level decline further. Only reducing industrial exploitation and keeping domestic water mining can improve the conditions, but still difficult to solve the problem. The aim of utilization of deep groundwater can achieve only by reducing disordered water exploitation for production and living.

Application of Visual MODFLOW to the Dynamic Change and Simulation of Deep Groundwater in Dezhou City, China

2010 ◽  
Vol 113-116 ◽  
pp. 1025-1030
Author(s):  
Juan Feng ◽  
Guan Qun Liu ◽  
Quan Sheng Zhao
Keyword(s):  
Water Level ◽  
Groundwater Level ◽  
Groundwater Resources ◽  
Dynamic Change ◽  
Underground Water ◽  
Current Situation ◽  
Visual Modflow ◽  
Deep Groundwater ◽  
Pumping Rate ◽  
Groundwater Exploitation

In view of this major environmental geology problem in Dezhou City that continuous overexploiting of deep groundwater has caused he rapidly-expansion of groundwater drop funnel in recent years, the dynamic change of deep groundwater in Dezhou City was systematically analyzed as well as the evolution and development of hydrodynamic field and deep drawdown cone in temporal and spatial variation was simulated by the application of the numerical Model. On the basis of hydrogeological conditions generalized in this region, Visual MODFLOW software was applied to build mathematical model of groundwater and stimulate the seepage field of groundwater. It predicted the expansion of groundwater drop funnel and the change of underground water level under the conditions of exploitation situation and different designed exploiting volume by the model built. The depth reduction and variation of groundwater under different design schemes for pumping rate were argued by contrast analysis of the calculated results. The forecasting result under the current situation of groundwater exploitation indicates that the drawdown of water level would increase more with the continuous exploitation when the exploiting volume of current situation is 2047×104m3/a. When (time)is equal to 5a(2013), (the decline depth of groundwater) is at 4.81～22.65m and the annual deceleration is at 0.96～4.53m/a. When is equal to 10a(2018), is at 14.32～32.87m as well as the annual deceleration is at 1.43～3.29m/a, and then the average elevation of central water level of funnel is -118.06m. The forecasting results under different design schemes for exploiting volume showed that the groundwater level would continuously decrease if the present exploiting quantity is still kept at 2047×104m3/a, which the depth of central groundwater level of funnel is 144.95m in 2012. While exploiting quantity cuts down to 1950×104m3/a, the groundwater level still constantly decreases, which the depth of central groundwater level of funnel is 133.90m in 2012. Only when exploiting quantity further cut down to 1750×104m3/a, the groundwater level would never descend after 2011, and then it would begin ascending, which the depth of central groundwater level of funnel would be 120.25m in 2012. According to the model stimulation of groundwater flow and the results of water balance analysis, the exploitation project was proposed that the drawdown cone would not further expand. The key measure to protect deep groundwater resources in this region is scientific planning of underground water, and ensuring that The allowable exploiting volume in this region should be kept at 1750×104m3/a in order that it can reach a benign circle with the balance of exploitation and supplementation.

scholarly journals Water Use Conflict and Coordination between Agricultural and Wetlands—A Case Study of Yanqi Basin

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3225
Author(s):  
Mengyao Jiang ◽  
Shuntao Xie ◽  
Shuixian Wang
Keyword(s):  
Water Use ◽  
Groundwater Level ◽  
Assessment Tool ◽  
Scientific Evidence ◽  
Three Dimensional ◽  
Correlation Coefficients ◽  
Integrated Approach ◽  
Groundwater Exploitation ◽  
Lake Recovery ◽  
Yanqi Basin

Increased groundwater extraction leads to the decrease of the extent of wetlands due to the implementation of a water-saving transformation project in an arid irrigation area. The application of integrated mitigation tools and strategies in China have increasing significance. In this study, an integrated approach (SWAT-MODFLOW) was followed; it is based on a soil and water assessment tool (SWAT) coupled with a modular three-dimensional finite difference groundwater model (MODFLOW). Recharge and evaporation values were estimated by SWAT and were then used to simulate groundwater in a MODFLOW model. Calibration (over the years 2000–2010) and validation (over the years 2010–2016) were performed, based on observed groundwater-level data; results showed that the combined SWAT-MODFLOW provides more accurate simulation and prediction of the dynamic changes of surface water and groundwater in irrigation areas than results from individual MODFLOW models. This method was applied to the Yanqi Basin, which is one of the most appropriate arid agricultural basins for modeling lake wetland and groundwater in China. The correlation coefficients (R2) between the simulated and real groundwater level are 0.96 and 0.91 in SWAT-MODFLOW and MODFLOW, respectively. With the gradual increase in the extraction to 248%, 0.62 × 108 m3 of groundwater discharged into the lake became −2.25 × 108 m3. The lake level drops 1.3 m compared with the current year, when the groundwater exploitation increases by 10 × 108 m3/year. Overall, the results of the coupling model offer scientific evidence for agricultural water management and lake recovery, so as to enhance the water use coordination.

scholarly journals Brown Spider (Loxosceles) Venom Toxins as Potential Biotools for the Development of Novel Therapeutics

Toxins ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 355 ◽  
Author(s):  
Daniele Chaves-Moreira ◽  
Fernando Hitomi Matsubara ◽  
Zelinda Schemczssen-Graeff ◽  
Elidiana De Bona ◽  
Vanessa Ribeiro Heidemann ◽  
...  
Keyword(s):  
Serine Proteases ◽  
Three Dimensional ◽  
Biological Properties ◽  
Status Quo ◽  
Cellular Targets ◽  
Biological Features ◽  
Venom Toxins ◽  
The Status ◽  
Brown Spider ◽  
Systemic Manifestations

Brown spider envenomation results in dermonecrosis with gravitational spreading characterized by a marked inflammatory reaction and with lower prevalence of systemic manifestations such as renal failure and hematological disturbances. Several toxins make up the venom of these species, and they are mainly peptides and proteins ranging from 5–40 kDa. The venoms have three major families of toxins: phospholipases-D, astacin-like metalloproteases, and the inhibitor cystine knot (ICK) peptides. Serine proteases, serpins, hyaluronidases, venom allergens, and a translationally controlled tumor protein (TCTP) are also present. Toxins hold essential biological properties that enable interactions with a range of distinct molecular targets. Therefore, the application of toxins as research tools and clinical products motivates repurposing their uses of interest. This review aims to discuss possibilities for brown spider venom toxins as putative models for designing molecules likely for therapeutics based on the status quo of brown spider venoms. Herein, we explore new possibilities for the venom components in the context of their biochemical and biological features, likewise their cellular targets, three-dimensional structures, and mechanisms of action.

Three Dimensional Dynamic Monitoring Model of Groundwater Resources in Jiao Nan Feng He River Basin

2013 ◽  
Vol 664 ◽  
pp. 211-214
Author(s):  
Dao Lei Xie ◽  
Jiu Chuan Wei ◽  
Hui Yong Yin ◽  
Jian Bin Guo ◽  
Ming Xiang He ◽  
...  
Keyword(s):  
River Basin ◽  
Groundwater Level ◽  
Groundwater Modeling ◽  
Groundwater Resources ◽  
Three Dimensional ◽  
Dynamic Monitoring ◽  
Water Model ◽  
Dimensional Structure ◽  
Topographic Map ◽  
Three Dimensional Model

Build strata three-dimensional structure model By GMS (Groundwater Modeling System) software about the Feng He River basin and on the basis of it place the groundwater water model to better show the groundwater level, buried depth, thickness, etc., at the same time display the locations of groundwater cordon. Groundwater cordon can be cut along with the strata and water and displayed on the cutting profile. Superimpose the model and satellite topographic map, so can select a specific position cutting three-dimensional model in order to understand a specific location or area of underground water level, water thickness, etc. Through the real-time update of groundwater level data to understand the utilization of groundwater mining in the study area, ensure the sustainable use of groundwater resources and realization of three dimensional dynamic monitoring of groundwater resources in the study area.

scholarly journals Economics of Battery Use in Agriculture: Economic Viability of Renewable Energy Complemented with Batteries in Agriculture

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2430
Author(s):  
Clemens Fuchs ◽  
Axel Poehls ◽  
Katharina Skau ◽  
Joachim Kasten
Keyword(s):  
Renewable Energy ◽  
Nuclear Power ◽  
Production Cost ◽  
Target Function ◽  
Status Quo ◽  
Electricity Production ◽  
Selling Price ◽  
Development Scenarios ◽  
The Status ◽  
Price Relationships

The production of renewable energy fluctuates in terms of sun and wind and must be supplemented by storage in the system. On an individual basis, i.e., for centralized electricity production and predominantly self-consumption, the use of batteries is considered here. Possible future development scenarios were simulated based on current price relationships (status quo). In the status quo, a selling price for PV electricity of 13 Euro cents (ct)ct/kWh was assumed with a production cost of 11 ct/kWh. The selling price of wind power is 5 ct/kWh with a production cost of 3 ct/kWh. The cost of storing electricity in a battery increases the price by 33 ct/kWh. A price of 20 ct/kWh is assumed for electricity purchases by companies. In the status quo, the use of batteries is not economical given the assumed price relationships. Changing the framework conditions, such as those of the legislature in Germany with the nuclear power phase-out and in the EU with the coal exit and decarbonization, will lead to increased availability of (fluctuating) renewable electricity, especially during the day. The purchase of electricity at other times, when the supply is scarce, can lead to increased electricity prices, especially at night. Together with falling costs for storage, the use of batteries for centralized power generators could be very interesting in the future. The method used in this study is nonlinear optimization of the target function costs of electricity supply in the developed simulation model. The results can also be transferred to other countries, as the assumed trends apply worldwide.

scholarly journals Characterization of spatial coseismic response of groundwater levels in shallow and deep parts of an alluvial plain to different earthquakes

2012 ◽  
Vol 9 (4) ◽  
pp. 5317-5354
Author(s):  
M. Parvin ◽  
N. Tadakuma ◽  
H. Asaue ◽  
K. Koike
Keyword(s):  
Groundwater Level ◽  
Groundwater Resources ◽  
Shallow Groundwater ◽  
Seismic Energy ◽  
Large Earthquake ◽  
Deep Groundwater ◽  
Groundwater Levels ◽  
Pressure Changes ◽  
Relationship Of

Abstract. Coseismic changes in groundwater levels have been investigated in many places throughout the world, but most studies have focused on the effects of one large earthquake. Few studies have looked at the spatial patterns of level changes in response to several earthquakes, or at the relationship of the patterns to shallow and deep groundwater in the same area. The aim of this study was to investigate these patterns and to construct a model of hydraulic responses. We selected the Kumamoto City area in southwest Japan, a region with one of the richest groundwater resources in Japan, as our study site. Data from hourly measurements of groundwater levels in 54 wells were used to characterize the coseismic spatial responses to four large earthquakes that occurred in 2000, 2001, 2005, and 2008. Although the distance to the epicenter (12 to 2573 km), and seismic energy (Mw = 4.8 to 8.0) of these earthquakes varied, systematic groundwater level changes were observed in the range of 0.01 to 0.67 m. The zones where coseismic rises were observed were generally wider for deep groundwater than for shallow groundwater. We observed general trends in the changes in groundwater levels, and calculated pressure changes, in the deep groundwater, but the coseismic increases or decreases in compressive stress in the shallow groundwater were variable, depending on the distance to the earthquake epicenter. We developed a conceptual model of the mechanism underlying this phenomenon and also investigated the importance of Togawa lava, consisting of porous andesite and forming a main aquifer, in determining the pattern of groundwater level change.

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