Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userGroundwater Vulnerability Assessment Study case: Deveh Spring
تقييم قابلية المياه الجوفية للتلوث حالة الدراسة: نبع ديفة
1624
0 67
0
(
0
)
Created by
Shamra Editor
Ask ChatGPT about the research
تعد المياه الجوفية مصدر هام لمياه الشرب و لذلك يعد تلوث المياه الجوفية مصدر قلق مستمر. فتلوث المياه الجوفية بعكس المياه السطحية يصعب تحديده و الأصعب التحكم به و معالجته، و قد يستمر لسنوات أو عقود. إن منطقة نبع ديفة في اللاذقية منطقة زراعية تعاني من مشاكل بيئية عديدة، و من هنا تأتي أهمية تقييم قابلية نبع ديفة للتلوث باستخدام طريقة DRASTIC، و وضع خريطة قابلية المياه الجوفية للتلوث باستخدام GIS. بينت خريطة قابلية المياه الجوفية للتلوث أن معظم المياه المغذية لنبع ديفة لديها قابلية عالية و معتدلة للتلوث. قدرت مساحة المنطقة التي مياهها الجوفية ذات قابلية مرتفعة للتلوث بحوالي ((82 Km2، أي تشكل حوالي (%48) من المساحة الكلية لمنطقة الدراسة التي تبلغ ((170 Km2. أما مساحة المنطقة ذات المياه الجوفية المعتدلة القابلية للتلوث بحوالي ((40 Km2، أي تشكل حوالي (%23) من المساحة الكلية لمنطقة الدراسة. و بالتالي لابد من اتخاذ إجراءات كفيلة لحماية المياه من التلوث و ذلك من خلال الإدارة المتكاملة لموارد المياه الجوفية.
Groundwater is an important source of drinking water. Therefore; groundwater contamination is a source of continuing concern. Groundwater contamination is unlike surface water contamination, because it is difficult to define and harder to be controlled and treated. It may also last for years or decades. Deveh Spring area is an agricultural area in Lattakia. It suffers from many environmental problems, so, it is very important to assess spring water vulnerability using DRASTIC and create water vulnerability assessment map by GIS. The map showed that the recharge water to Deveh Spring has a high and moderate vulnerability to contamination. The area of high vulnerable groundwater zone is (82Km2), which is about (48%) from the whole study area. The area of moderate vulnerable groundwater zone is (40Km2), which is about (23%) from the whole study area. Sufficient actions must be taken to protect water from contamination, through the integrated management of groundwater resources.
References used
RAHAMAN, A. A GIS Based DRASTIC Model for Assessing Groundwater Vulnerability in Shallow Aquifer in Aligarh, India. Applied Geography. Vol. 28, N. 1, 2008, 32-53
VRBA, J.; ZOPOROZEC, A. Guidebook on Mapping Groundwater Vulnerability. International Contribution for Hydrogeology, Verlag Heinz Heise, Hannover. Vol. 16, 1994, 131
FOSTER, S. Fundamental Concepts in Aquifer Vulnerability, Pollution Risk and Protection Strategy. Committee on Hydrogeological Research, The Hague, Netherlands, Vol. 38, 1987, 69-86
rate research
Read More
The research mainaim is Mapping of Groundwater Vulnerability to Contamination
Using (PI) Method toevaluatethe study area (Marqieh and Alhousen watershed ) in
Tartous governorate. The area of study forms a part of the coast basin, on the east coast
of the Mediterranean Sea, located north of the Tartous governorate between , 34
5000,35 1000latitude in the north of the equator, and , 35 5000,36 2000
longitude in the east of the Greenwicharea covers about 700 Km2. The PI method is a
GIS-based approach(We use ARCGIS .10 and the tool : Spatial Analyst Tools) , and
gives special methodological tools for karstic aquifer , geological conditions , climate ,
relief , land use , all these conditions are mapped separately as individual maps and then
integrated to achieve the groundwater vulnerability map.
all the maps related to the study area was created in digital form and apply analysis
processes to create vulnerability map which is a map divided to the fields and every field
represents the possibility of contamination of groundwater in this region, whether high or
low .
The results obtainedfrom this study indicate that about 41% of the study area is under
high groundwater vulnerability, 59% is under moderate, low and very low vulnerability.
Pollution is an important problem experienced by modern societies and the presence of
polluants in water resources, especially freshones, makes them a serious and specified
problem for growth and life.The purpose of the research is to evaluate the
validity of the
sources of drinking water and comparison with the Syrian Standards adopted in this field,
as well as the calculation of their Quality Index ( Candian Quality Index )where periodic
physical ,chemical and biological analysis of water samples taken from the specified
sampling points were carried out in the studied area all the year round from April 2017 to
March 2018 ,(The Electric Conductivity , Turbidity , Total Hardness , Ammonium , Nitrite
, Nitrates , Phosphates ,Sulphates , Total Coliform , Fecal Coliform and E-Coli) were
measured . It showed that the values of the physical and chemical parameters of the water
samples taken from the specified sampling points achieved the allowed limits of the Syrian
Standard for drinking water expect for some values of Total Hardness and Phosphate
calcareous.Bacteriological pollution of water samples was found at specific sampling
points throughout the year with Total Coliform , Fecal Coliform and E-Coli exceeded
allowed limits in drinking water .Th classification of water in terms of drinking capacity
for the first water source ( Defa Spring )was acceptable (medium – acceptable ) while its
for the second water source ( AL-Rwameya Wells ) was very poor.
The provision of adequate drainage and the accompanying problem of
accumulation of salt in soil have plagued irrigated agriculture for
centuries. Soil salinity is one of the major problems in arid and semi-arid
zones. In Euphrates valley the high
groundwater level and its high
evaporation rate caused a serious salinity problem. This study was aimed
to allocate the dangerous areas in terms of high water level resulted from
the recent and expected activities. Drainage wells will be drilled at these
areas in order to lower the groundwater level and prevent further soil
salinity.
The Drastic method has been used to assess the potential sensitivity of the
Groundwater In Lattakia basin using Arc GIS 9.2 Where the modified Drastic system has
been developed by combining the land uses and its divisions with general Drastic model
.As a result, final values of Drastic have been modulated into two categories "low and
moderate sensitivity"
It has been found that the introduction of the human criteriahas increased the
potentialof the moderate sensitivity of the Groundwater.
As a final result, the general content of the sensitivity map which has been
establishedfor Lattakia basin, showed, the domination of low sensitivity category in the
north western and the north eastern areas which has big location depths of the Groundwater
and high topographic altitudes.In contrast, the moderate sensitivity category dominated in
the southern areas of the study region.
The latter areas which are characterized by the existence of varied human activities
havelocation ofGroundwater levels close to the surface.
Biological Denitrification process in anoxic fluidized bed reactor is a simple
way to eliminate nitrate – nitrogen that pollute the groundwater.
In this method the biofilm (including organic bacteria) was cultured on the
reactor bed particles, whi
ch we chose granular activated carbon (1-3) mm.
The raw water containing Nitrate ions and bacteria nutrients was pumped
into the bottom of the reactor in an adequate velocity to fluidize the bed
particles holding the biofilm.
Ethanol and DeHydrogenated Sodium ortho phosphate was chosen as
bacteria nutrients, Ethanol as carbonic nutrient and DeHydrogenated
Sodium ortho phosphate as phosphoric nutrient.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
