Loop Aeration Column Application For External Wastewater Treatment Of Oilfield

In this paper the writer investigate and study the all kinds of method for oily wastewater treatment in domestic and international and current situation of JiDong Oilfield external water treatment. Combined with characteristics of JiDong Oilfield development sea-oil on man-made island. Bring out the use of the inner loop reactor in the chemical industry with the conventional activated sludge as a new activated sludge process modifications to deal with oily wastewater. In order to obtain efficient processing results and the smallest footprint.The paper through the use of models to simulate a laboratory test and on-site industrial test, the method of combining tests to find the structure of industrial application of design principles, process the experience of operating parameters to adjust in order to facilitate application in the production process of oil field.First, by using coalescence and not coalescence two kinds of system in a simulated device, to simulate the inner loop aeration tower working state, through flow rate, dissolved oxygen parameters monitor and comparative analysis to obtain the hydrodynamic characteristics of a variety of situations, in order to find the impact of key technical parameters of the structural characteristics of size, to optimize device structure design parameters. Second, in the early stages of a laboratory test in order to sludge acclimation mainly to introduce oilfield wastewater and sewage treatment plant activated sludge in a simulated device simulation of operating conditions, the activated sludge under different conditions of growth, effluent COD of etc. recorded statistics. Lay the foundation for the continuous testing, continuous experiments are closest to the actual content of on-site laboratory, through the continuous operation in the experimental device for continuous water situations COD, sludge volume index, the settlement ratio, sludge loading, etc. record and analysis of parameters obtained hydraulic retention time of 3 hours the effluent COD can be reduced to 80mg / l. As well as the production may occur in a variety of working conditions are simulated.In JiDong Oilfield GaoShangPu carried out the trial tests, experiments using an 25m~3 volume of the inner loop aeration tower, through the technical parameters of the test to be 4.5-5 hours hydraulic retention can be obtained up to the national one grade the results of water quality discharge standards, which proved that the technology in the promotion of JiDong Oilfield has value, its highly efficient processing power, smaller footprint is demonstrated practical value in fact.