Experimental Study On Deep Treatment Of Produced Water In Oilfield With Active Coke Bonded Ceramic Flat Film Process

At present,our economy is in a stage of rapid development.As an important part of modern civilization,oil extraction technology has been widely concerned.The demand for oil resources is constantly increasing,and the state has also stepped up exploitation of oilfields.In addition to starting exploration for new oilfields,it also increased the exploitation of old oilfields.With the deepening of exploitation,the tertiary recovery Increasing the block,the amount of water produced is also increasing year by year,coupled with the extraction of oil with different levels of mining its composition has become very complicated.The amount of water produced is also increasing year by year.In addition,the composition of the produced water in the oilfield also becomes very complicated with different degrees of exploitation.The above is the problem facing oilfield exploitation in our country at this stage.If we do not deal with it,we will drain or re-inject the produced water,which will cause unnecessary damage to the environment.Production of water recycling,is one of the important measures to achieve sustainable development of oil field mining.In addition,the production of oilfield water contains a variety of complex organic and inorganic substances,produced water quality is affected by many factors,such as the geographical location of the oilfield,geological conditions,the life of the oilfield and drive water chemical composition,these substances can The physical or chemical properties of produced water have an impact.Although the quality of produced water is different in different regions,the types of pollutants in water are generally the same,which can provide the basis for the process selection of the produced water in different regions.Because of the current technology in the field of deep processing of production water,adsorption and membrane filtration technology are efficient and feasible to achieve oil recovery of oil production technology,so in this experiment the two technologies combine to achieve the test effluent Meet the SY5329-94 "claw reservoir water quality recommended indicators and analysis methods" in the injection of water quality A standard COD requirements.This paper introduces the status quo of oilfield produced water treatment and the corresponding water quality characteristics,as well as the current more emerging adsorbent-active coke characteristics and adsorption efficiency,the test section is based on a joint oilfield in Liaoning Province Oilfield produced water as the research object,During the test period,three sets of parallel tests were set up as the AO combined active coke process,the MBR combined with ceramic plate membrane process and the active coke combined ceramic plate membrane process,respectively.Using the static beaker test and the dynamic device test,the removal and removal of organic pollutants(COD)from each set of three sets of parallel tests were detected to determine the effective and feasible COD treatment of oilfield wastewater in the joint station.After the process is determined,the device begins to run continuously,and after the device is in stable operation,the optimum operating parameters of the process are explored.Active coke combined with ceramic slab film process is explored to develop an economical and effective method for the depth Processing craft,at the same time.The above results show that the AO co-active coke process has a high efficiency of organic pollutants removal in water quality,but the processing is more complicated,and the bio-end processing efficiency is not high,mainly rely on the adsorption of activated coke In addition,the role of a larger area,not convenient management.MBR process because of the biodegradability of the treated water quality is not high,so it can not make the biofilm in sludge formed well,although the use of a combination of ceramic flat membrane program,but the diaphragm COD removal no significant effect.Active coke combined with ceramic flat membrane process of joint station anaerobic section of water for further processing,the water quality is good and stable,can meet the oil field produced water discharge standards,and the treatment efficiency,simple process,coupled with the use of the test process Activated coke has similar adsorption properties as activated carbon,as well as regeneration,but also overcome the low mechanical strength of activated carbon,easy to smash and the price of higher defects,so the application of sewage treatment has a more extensive application prospects,ceramic plate membrane machinery High strength,good retention,can be recycled and reused,the test system has good application prospects.This article provides a certain theoretical basis for the in-depth study and practical application of the technology,which is of guiding significance and reference value.