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With population growth and the acceleration of the industrialization proces s,shortage of water resources,water pollution increasingly prominent.This req uires that the existing water resources protection,to discharge the sewage treat ment again after discharge,reduction of natural water and other biological haza rds.Pollution control in developed countries has achieved remarkable results,b ut water pollution is the cause of China’s importance in the 20th century,1980 s and 1990s.China’s water pollution control technology develoPment later,the techniques used by developed countries compared to the high cost and low effi ciency.This paper used by the Biological Aerated Filter Technology is now a broader application of the international community and the better-performing tec hnology.Because of its small footprint,low operating cost,high organic load, the effect will not smell good and the advantages of gas,could be built in the sewage outfall around the urban area,other than saving technology From the city to the suburbs of the sewage transport pipeline network and energy consu mption,and that the process for China’s economic development status.Therefor e,the Biological Aerated Filter in China have good prospects for development.Aerated Concrete fly ash particles and zeolite granules filled Biological Ae rated Filter pegged to film comparison test results showed that:fly ash and ga s panicles Biological Aerated Concrete and zeolite filter particles linked to the Biological Aerated Filter film the same time.The removal of COD,aerated concrete particles of fly ash particles and the zeolite eventually stabilize at 55p ercent,around 60%.The removal of NH3-N,zeolite particles has been around 70 percent,fly ash panicles concrete filling the highest rate of treatment to onl y 60 percent.Aerated Concrete fly ash particles Biological Aerated Filter optimal operati on of the test results obtained,hydraulic loading,gas and water than the organ ic pollutant load on the impact of the removal rate showed a first and then do wnward trend,to COD In addition to efficiency as a reference,hydraulic loadi ng,gas,water and organic load than the best range:≤30.72 m3/m2·d,2:1around,≤13.7kgCOD/m3·d.In the above conditions,CODremoval rate for an average of 74.2percent,the water concentration in the 60 mg/L below the water NH3-N average concentration of 1.0mg/L,to meet discharge GB18918-2002 A-level st andards.Aerated Concrete fly ash particles Biological Aerated Filter performance an d a high degree of media-relations test,COD,NH3-N removal mainly concentr ated in paragraph 0～40cm.COD removal 0～10cm in the removal of the more obvious,NH3-N in the removal of 10-40cm of the more obvious.This study showed that the fly ash particles can be used as aerated concre te Biological Aerated Filter treatment of the media.
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