The water endurance of earthworms, earthworms loading, sewage concentration and percolationvelocity which affected treatment efficiency were investigated.
试验对蚯蚓的耐水能力、蚯蚓负荷、污水浓度以及渗滤速度等因素对污水处理效果的影响进行了初步研究。
2
The sand producing mechanism of Sebei gas field is analyzed thoroughly with the reservoir features, the litho logy features, the percolationvelocity, and the reservoir soaked by working fluid, etc.