the trickling filter and activated sludge efficiencies cited required primary sedimentation and effluent circulation.
列举的生物滤池与活性污泥法的效率需要初次沉淀和回流。
the mesophilic(35 ℃) two-phase anaerobic digestion(tpad) process was used to treat mixed sludge from primary sedimentation and secondary sedimentation tanks(1 ∶1) to realize sludge stabilization.
采用中温(35℃)两相厌氧消化工艺处理初沉污泥与剩余污泥的混合样(1∶1),以实现污泥的稳定化。
the experimental results indicated as well that canceling primary sedimentation tank and cesspool when building houses would avail to stable running of sewage treatment plant.
试验结果表明:在污水处理厂取消初沉池,及修建住宅时取消化粪池,对污水处理厂的稳定运行有益。
next up is the primary sedimentation tank, where sludge settles to the bottom and lighter liquids like grease, oil and soap rise to the top.