Transmutation Characteristics of Manure and Sewage Characteristics in Large-scale Pig Farms based on Combined Processing Mode of"USR+A/O+MBR"
The pollutant characteristic parameters of a pig farm are the important basis for the evalua-tion of harmlessness and resource utilization of pig manure.In order to understand the variation of pollu-tant characteristic parameters after multistage treatment of manure,especially for sewage,in Jiangxi large-scale pig farms,a large-scale pig farm with USR+A/O+MBR wastewater treatment model in Jian-gxi was selected to conduct annually seasonal monitoring on pollutant characteristics in each stage.The re-sults showed that the parameters of Manure OM,NH3-N,TN and TP were 50.84％,0.41％,2.47％and 5.94％,respectively,and the contents of OM and TP increased,but the contents of NH3-N and TN de-creased.The characteristic parameters of COD,NH3-N,TN and TP in the final effluent were 386.06 mg/L,70.89 mg/L,493.53 mg/L and 7.61mg/L respectively,the total removal rates of pollutants were 95.40％,72.73％,91.41％and 95.89％,respectively.The results indicate that the combined processing mode of"USR+A/O+MBR"can remove the pollutant well,and the effluent water quality meets the re-quirements of pollutant discharge standards of livestock and poultry industry.
国家科技期刊平台
NSTL
万方数据
