شناخت آلایندههای هیدروکربنی در آبخوان پالایشگاه بندرعباس و مدلسازی عددی انتقال آلایندهها
First Statement of Responsibility
/منصوره محمدزاده مطلق
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
: علوم طبیعی
Date of Publication, Distribution, etc.
، ۱۳۹۵
Name of Manufacturer
، افشار
NOTES PERTAINING TO PUBLICATION, DISTRIBUTION, ETC.
Text of Note
چاپی
DISSERTATION (THESIS) NOTE
Dissertation or thesis details and type of degree
کارشناسی ارشد
Discipline of degree
زمین شناسی
Date of degree
۱۳۹۵/۱۱/۲۰
Body granting the degree
دانشگاه تبریز
SUMMARY OR ABSTRACT
Text of Note
آب زیرزمینی، مدل عددی ، شرکت پالایش نفت بندرعباس
Text of Note
sIran as a main producer of oil, has many potential of soil and water pollution released from oil fields, refineries and pump stations. Elimination of pollution from groundwater is a very expensive and time consuming. Any mistake in the prediction of contaminants transport may cause large costs in implementing a clean-up program. So, simulation of mass transport using numerical modeling is a way to understand the mechanisms of solute transport and can reduce the cost of remediation.Bandar Abbas Oil Refinery Company has been founded in 1376 as the eighth refinery in the country and the largest one in the Middle East. Recently some reports issued about contamination of some monitoring wells of the refinery. In the present study to determine the status of pollution in the area, thickness of oil in each of the was determined which showed that 11 wells have an LNAPL phase. This study was focus on one of the plumps with the highest LNAPL thickness and concentration of contaminants. Pollutants was identified and then flow and contaminants transport were modeled using MODFLOW-2000 and MT3DMS respectively. The behavior of pollutants in groundwater and plume distribution were simulated. To determine the aquifer hydraulic parameters, a pumping test was conducted in a well within the modeling area the result of test estimated hydraulic conductivity as 2.45 meters per day, transmissivity 24.5 square meter per day and specific yield 0.174. steady-state model which was most sensitive related to hydraulic head boundary was run with NRMS 4.97 . The Transient model established with NRMS 2.7 to 4.26. The transport model with high sensitivity related to hydraulic conductivity and longitudinal dispersivity was run for 30 and 50 years under condition of the five scenarios. The first scenario with a continuous source regarding sorption process showed that, after thirty years the plume will reach downstream monitoring wells and after 50 years, will exceed the southern boundary of the refinery. The second scenario assumes continuous source and switching off the sorption parameter showed that the plum will be 15 greater than the first scenario. Downstream wells will be contaminated with more concentration and fifty years later plum of the southern will exit from border for all BTEX compounds. At the third scenario the source assumed to be cut in 2017 regarding sorption process. This scenario showed that by cutting off the source spreading of pollution can be decrease downstream substantially. In the fourth scenario results showed that cleaned up can prevented the spread of contamination and prevent to reach downstream wells and the boundary of Refinery. In the fifth scenario by cutting off the source in 2017 and removing of 50 of LNMAPL in 2022 and elimination 50 of BTEX concentration in 2027 the plume size will be decreased down to 180 meter without rist of reaching to the downstream well