Optimization of Bioremediation Using Bench Scale Test for Hydrocarbon Contaminated Soils from Oil Fields of Kuwait
Vangala K, AlFaresi, Fatma
Soil Remediation Group, Kuwait Oil Company, Ahmadi, Kuwait.
The Kuwait desert was severely damaged by the detonation and destruction of oil wells and associated infrastructure at the hands of Iraqi troops during the 1990-1991 Gulf War (Nada et al, 2020). Most of the damages were from the aftermath of the burning of around 800 oil wells which were exploded. Subsequently, the United Nations Compensation Commission (UNCC), established a program known as the Kuwait Environmental Remediation Program (KERP) to undertake comprehensive and collaborative remediation of the contaminated land that has an estimated volume in the region of 26 million m3 (Nada et al, 2020). This program is entrusted to Kuwait National Focal Point (KNFP) for its oversight and stakeholders for implementation. The South Kuwait Excavation Transportation and Remediation (SKETR) Zone 1 project, is one of project of the Kuwait Environmental Remediation Program (KERP), under (Kuwait Oil Company), dealing with the remediation of oil-contaminated soils and oil sludge present in Kuwait’s Greater Burgan Oilfield.
The main aim is to remediate a signification portion of the existing and accessible KERP oil contaminated features (Dry Oil lakes, Wet Oil Lakes and Oil Contaminated Piles) within Greater Burgan oilfield to the required Remedial Target Criteria (RTC) of 1% Total Petroleum Hydrocarbons (TPH) based on the n-hexane extraction method (HEM) analyzed by USEPA Method 9071B.
This paper describes the bench scale study to explore soil behavior under bioremediation technique and provide data successful for the full-scale bioremediation technique to demonstrate that the bioremediation method will be effective to meet the RTC for the type of contaminated soils in Kuwait and to optimize the bioremediation efficiency and time line schedule in terms multiple dosages of natural or commercial bacteria, nutrients, biodegradable surfactants, water retention and tilling/aeration. The objective of the bench scale study was to provide baseline data for the water and amendment requirements and for the monitoring program that will be required as part of the bioremediation process to meet full-scale bioremediation project objectives. The optimal parameters to successfully perform full-scale bioremediation were determined upon completion in this study.
Pages: 33 – 47 | Full PDF Paper