Zhumadian City, Henan Province

Project location: Zhumadian City, Henan Province

Processing scale: 100000 tons/day

Effluent standard: National Grade A standard

Project background: Standard transformation. By replacing the original aeration system with a new micro aeration system, adding a new pre sedimentation system, increasing the internal and external reflux ratio, the final effluent meets the national first-class A standard.

Design influent water quality: Design influent COD ≤ 250mg/L, ammonia nitrogen ≤ 50mg/L, total nitrogen ≤ 60mg/L, total phosphorus ≤ 8mg/L, SS ≤ 250mg/L

Sewage treatment process flow: coarse and fine grids+swirling sand settling+micro aeration A ² O biochemical+new coagulation sedimentation tank+filter cloth filter tank+contact disinfection tank