The industrial town of Sari wastewater treatment plant

Location: : Sari industrial town

Capacity: 800 m3/day

Employer: Mazandaran industrial towns Company

Supervisor: Farpak Consultant Company

Date of starting: 2003

The industrial town of Sari wastewater treatment plant

General specification of the influent

Sari industrial town wastewater has the specification of industrial wastewater TSS=300 mg/lit, BOD = 1000 mg/lit, COD=2000 mg/lit.

Brief specification of treatment process

Treatment of wastewater using the method of two-step activated sludge (absorption – bio-oxidation) consists of:Bar screening, Aerated grit chamber, equalization tank, aeration by high speed surface aerators, primary sedimentationwith activated sludge pump station, second step aeration by high speed surface aerators, with secondary activated sludgepump station, final sedimentation (with rotational half bridge), telescopic valves and pumping station of excessive andreturn activated sludge, chlorination tank, primary and secondary excessive sludge, sludge thickener tank and thickened sludge reservoir tank.