A project example of pig farming sewage treatment by UASB-two stage A/O-coagulation process
In view of the characteristics of pig farming sewage from a large scale pig farm such as complex composition,high pollutant concentration,good biochemical performance,and so on,a combined process of pre-treatment-UASB-two stage A/O-coagulation sedimentation-multi media filtration-disinfection was adopted in the design.The process flow and main design parameters were introduced,besides,the effect of the said combined process on pig farming sewage treatment were investigated and analyzed.The operation results of the project showed that,the said process had high treatment efficiency which could obtain stable effluent water quality,the main pollutants indicators of the effluent water all met the requirement of grade 1 in GB 8978-1996 Compre-hensive sewage discharge standard.The effluent water could be used for farmland irrigation.
万方数据
维普
