Optimization and Application of Suspended Sludge Filtration Process
A certain oilfield adopts SSF(Suspended Sludge Filtration)technology to treat produced wa-ter,and the designed effluent follows the"8·3·2"standard specified in Q/SY DQ 0605-2006 Water Quality Indicators and Analysis Methods for Reservoir Water Flooding Injection in Daqing Oilfield.In recent years,due to various factors,the compliance rate of effluent quality at the station has been low.In order to improve the effluent quality at the station,the oilfield organizes on-site research,analyzes the produced water,and evaluates the treatment process.Four key factors affecting the compliance rate are identified,and corresponding optimization strategies are formulated.Based on the research,the oil-field conducts technical research from three aspects.In terms of reagents optimization,screening of wa-ter treatment process reagents are carried out,fungicides are optimized to improve the sterilization ef-fect,and SSF process reagents are screened to enhance the compactness of suspended sludge layers.In terms of process optimization,on-site tests on the construction of the sludge layer in the SSF process and hydraulic shock tests are conducted,and the processing capacity of the SSF process is rechecked.In terms of management optimization,process operating parameters are adjusted,the settling time of the settling section is extended,container dredging,oil collection,and sludge discharge work are regular-ly organized to improve the removal rate of oil and suspended solids.Through above works,the 100% compliance rate of bacterial concentration in the effluent water is achieved,the compliance of oil con-centration after filtration is promoted,the concentration of suspended solids after filtration is reduced,and the compliance rate of effluent water quality is gradually improved.The results indicate that the opti-mization and application of the SSF treatment process can promote the improvement of effluent quality indicators,which has good guiding significance for the optimization operation,renovation and expan-sion of future produced water stations.
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维普
