Assessment of radius of influence of sparging well and biosparging operations in Ozzmukpbu, Zizkwere LGA, Rivers State, Nigeria

Abstract

The capacity to analyse the influence of the operation on the targeted wells is critical to the efficacy of biosparging. Its success varies based on the profile of the targeted region in which the operation is carried out. The Omkpbu investigation was able to establish the impact of the activities as defined by the soil texture, which is clay silt in nature. To establish the ROI inside the research region, a 10m deep sparging well (SW) and 8m deep monitoring wells (MW) were constructed at 1m, 2m, 3m and 5m intervals around the sparging well. The influence of the sparging well became obvious on the 13th, 14th and 15th day of the sparging operations. This resulted in an increase in the dissolve oxygen in the ground water condition across the monitoring wells. In comparism with the baseline data there were massive improvement in the presence of dissolve oxygen in the ground water at an increasing rate as the operations continues. Monitoring well 1, 2, 3 and 4 on the 13th day felt an increased rate of influence at 2.6mg/l, 2.5mg/l, 4.31mg/l and 2.83mg/l as against the base line data of 1.9mg/l, 1.5mg/l, 1.7mg/l and 1.9mg/l respectively. Similarly, there were also an increased influence from data generated on the 13th day as at the 14th day the presence of the dissolve stood at 2.7mg/l, 3.6mg/l, 4.9mg/l, and 3.0mg/l respectively. The 15th day noticed a massive increase in the dissolve oxygen in groundwater as it stood at 4.4mg/l, 6.2mg/l, 6.17mg/l, and 4.78mg/l respectively. Biosparging has a great influence in increasing dissolve oxygen in groundwater which essentially is a major requirement for addressing groundwater contamination.